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WO2018137052A1 - 一种止水阀 - Google Patents

一种止水阀 Download PDF

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Publication number
WO2018137052A1
WO2018137052A1 PCT/CN2017/072317 CN2017072317W WO2018137052A1 WO 2018137052 A1 WO2018137052 A1 WO 2018137052A1 CN 2017072317 W CN2017072317 W CN 2017072317W WO 2018137052 A1 WO2018137052 A1 WO 2018137052A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
back pressure
sealing
limiting member
valve stem
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/072317
Other languages
English (en)
French (fr)
Inventor
刘永茂
张子鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lab Xiamen Sanitary Fittings Inc
Original Assignee
Lab Xiamen Sanitary Fittings Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lab Xiamen Sanitary Fittings Inc filed Critical Lab Xiamen Sanitary Fittings Inc
Priority to PCT/CN2017/072317 priority Critical patent/WO2018137052A1/zh
Priority to US16/340,381 priority patent/US10920903B2/en
Publication of WO2018137052A1 publication Critical patent/WO2018137052A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
    • E03D1/32—Arrangement of inlet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • F16K31/24—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • F16K31/28—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with two ore more floats actuating one valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7413—Level adjustment or selection means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7439—Float arm operated valve
    • Y10T137/7465—Assembly mounted on and having reciprocating valve element coaxial with inlet pipe
    • Y10T137/7472—Vertical inlet riser

Definitions

  • the invention relates to the technical field of water inlet valves, in particular to a water stop valve.
  • the inlet valve usually includes an inlet pipe, a top cover, a back pressure pad, a swing arm, a floating bucket and a water stop tank, and the lower end of the inlet pipe is installed on the water supply pipe of the water tank, and the top cover is installed at the upper end of the water inlet pipe.
  • the back cover is provided with a back pressure hole, and the middle portion of the swing arm is pivotally disposed on the top cover, one end of the swing arm is opposite to the back pressure hole, and a back pressure pad is installed, and the other end of the swing arm is connected with the adjustment rod of the floating bucket, and floats
  • the barrel is installed in the water stop tank, and the water stop tank is installed on the inlet pipe, and a sealing member for ensuring watertightness is provided between the members.
  • the floating bucket When used, when the water level of the water stop tank drops, the floating bucket is reduced by gravity, which causes the swing arm to deflect, so that the back pressure pad opens the back pressure hole, and the water flows from the water supply pipe through the inlet pipe, the top cover and the back pressure hole. In the water tank, water is introduced. When the water level of the water stop tank rises, the floating bucket is lifted by the buoyancy force, and the swing arm is deflected, so that the back pressure pad recloses the back pressure hole, and the back pressure of the water stop pad rises, blocking the water inlet, and stopping the stop. water.
  • the inlet valve includes a valve body, a valve cover, a water stop pad, a first crank arm, a second crank arm, a control rod, a float bucket, and a water stop tank;
  • the valve cover is installed in the valve body to form a water inlet chamber with the valve body a water stop surface having a water inlet hole is formed in the water inlet chamber, and the water inlet end of the water inlet chamber communicates with the water inlet passage, and the water outlet end of the inlet water chamber communicates with the water outlet passage;
  • the water stop pad is mounted on the valve cover on the water stop surface to stop the water
  • a water hole is arranged on the pad, a back pressure chamber is formed between the water stop pad and the valve cover; a back pressure hole is formed on the valve cover, the back pressure hole communicates with the back pressure chamber and the outside;
  • the second crank arm passes the second rotation perpendicular to the valve cover
  • the shaft is pivotally connected to the valve cover, the second rotating shaft divides the second crank arm into
  • the floating bucket When the water level of the water stop tank drops, the floating bucket is lowered by gravity, and the control lever is lowered to drive the second crank arm to swing downward, driving the first crank arm to swing away from the back pressure hole, so that the back pressure pad opens the back pressure hole.
  • the water enters the water tank through the water inlet passage of the valve body to realize the water inlet.
  • the float bucket When the water level of the water stop tank rises, the float bucket is lifted by the buoyancy force, and the control rod is lowered, and the second crank arm is swung upward to drive the first crank arm to swing close to the back pressure hole, so that the back pressure pad is closed again.
  • the pressure hole and the water stop pad generate back pressure and deform and seal the water inlet hole on the water stop surface to stop the water inlet.
  • the water inlet valve is provided with a water leakage hole at the bottom of the water stop water tank. After the water level of the water tank is lowered, the water in the water stop water tank enters the water tank through the water leakage hole, so that the floating barrel loses buoyancy and is reduced by gravity. The swing arm is deflected, and the back pressure hole is opened to realize the water inlet. However, after the water tank is used for a period of time, it is prone to failure and cannot be closed. For example, the drain valve leaks. At this time, the inlet valve continues to enter the water, and the water tank continues to leak, resulting in waste of water resources.
  • the object of the present invention is to provide a water stop valve which can stop the water inlet valve from entering the water in time and has a long service life.
  • the solution of the present invention is:
  • a water stop valve comprises a valve body, a valve stem, a water blocking plug and a driving mechanism; a water inlet channel and a water outlet channel are formed in the valve body, a sealing surface is arranged between the water inlet channel and the water outlet channel, and the sealing surface communicates with the water inlet channel and a water outlet channel; a cavity is formed in the valve body above the sealing surface, and a mounting hole is formed in the valve body above the cavity; the middle portion of the valve stem moves up and down and is sealed and installed in the mounting hole, and the upper part of the valve stem protrudes from the mounting hole and is connected with the driving mechanism.
  • the driving mechanism drives the valve stem to move up and down, and the back pressure hole is formed in the water blocking plug.
  • the lower part of the valve stem is moved up and down and inserted into the back pressure hole of the water blocking plug, and the water blocking plug is placed in the cavity and the water is interposed between the cavity and the cavity.
  • the gap forms a back pressure chamber above the water blocking plug, and the water gap communicates with the water inlet passage and the back pressure chamber, the back pressure chamber communicates with the back pressure hole, the back pressure hole communicates with the water outlet passage, and the valve rod forms a sealing end surface matching the back pressure hole.
  • the valve stem moves up, the sealing end surface opens the back pressure hole, the water inlet channel and the water outlet channel communicate with the water, the valve stem moves down and the water blocking plug moves downward, the sealing end face blocks the back pressure hole, and the water blocking plug blocks the sealing water surface. Water flows through the water gap into the back pressure chamber Water pressure preventing piston seal surface of the water and block further sealing.
  • valve stem forms a necking section, and a back pressure hole of the water blocking plug is sleeved on the neck portion of the valve stem.
  • the length of the neck portion is greater than the length of the back pressure hole.
  • sealing end surface is provided as a wedge-shaped surface, and the upper end of the back pressure hole forms a sealing slope matching the wedge surface.
  • sealing rod is sleeved in the middle of the valve stem, and the sealing piston is sealingly engaged with the mounting hole of the valve body.
  • the water blocking plug is composed of an injection molded part and a rubber part, and the receiving part forms a receiving cavity, and the rubber part is embedded in the receiving cavity of the injection molded part.
  • the driving mechanism comprises a swinging rod, a compression spring, a connecting rod and a limiting member; the middle portion of the swinging rod is pivotally connected to the valve body, and one end of the swinging rod is connected with the valve stem, and the valve stem moves up and down with the swinging rod; the other end of the swinging rod is connected One end of the connecting rod, the compression spring is mounted on the valve body and one end abuts against the valve body, and the other end of the compression spring abuts on one end of the swing rod connecting link to provide power for swinging the swing rod; the limiting member is movably mounted on the valve body The limiting member limits the movement of the connecting rod, and the pressing and lowering limiting member drives the limiting member to release the restriction on the connecting rod, and the compression spring drives the swinging rod to move downward and the valve stem and the water blocking plug are moved downward.
  • the limiting member is installed up and down in the valve body, and a spring is installed between the limiting member and the valve body, and the lower pressing of the limiting member moves downward to release the restriction on the connecting rod.
  • a mounting seat is arranged on the valve body, and a receiving cavity is formed between the mounting seat and the valve body, and the limiting member is placed in the accommodating cavity, and the retaining hole is formed in the mounting seat, and the middle portion of the limiting member is a limiting portion, and the limit
  • the lower part of the bit member is inserted into the retaining hole, and the diameter of the limiting portion of the limiting member is larger than the diameter of the retaining hole; one end of the spring abuts against the mounting seat, and the other end abuts against the limiting portion of the limiting member.
  • the upper end of the limiting member is arranged as a wedge portion, and the connecting rod is correspondingly provided with a slot, and the wedge portion of the limiting member is inserted into the slot of the connecting rod to restrict the movement of the connecting rod.
  • the swing lever is connected to the connecting rod by means of a snap-fit slot structure.
  • a clamping block is arranged on the swinging rod, and a card slot is arranged on the connecting rod, and the clamping block of the swinging rod is inserted into the slot of the connecting rod to connect the swinging rod with the connecting rod.
  • the connecting rod is radially connected to the swing rod.
  • the invention utilizes a water blocking plug to block the sealing water surface, and the water flow enters the back pressure chamber through the water gap, and the water pressure causes the water blocking plug to further block the sealing surface to stop the water, and the water blocking plug can be repeatedly used, which is more than the prior art.
  • the back pressure pad has a long service life.
  • Figure 1 is an exploded perspective view of the present invention
  • Figure 2 is a schematic view showing the structure of the water inlet state of the present invention.
  • Figure 3 is a schematic view showing the structure of the water stop state of the present invention.
  • Figure 4 is a cross-sectional view showing the state of water entering the present invention.
  • Figure 4a is a partial enlarged view of Figure 4.
  • Figure 5 is a cross-sectional view showing the water stop state of the present invention.
  • Figure 5a is a partial enlarged view of Figure 5;
  • Figure 6 is a cross-sectional view showing a state in which the magnetic element of the present invention is separated
  • Figure 6a is a partial enlarged view of Figure 6;
  • Figure 7 is a cross-sectional view showing a state in which the magnetic element of the present invention is attracted
  • Figure 8 is a schematic view showing the internal structure of the present invention.
  • Figure 9 is a schematic structural view of a water leakage state of the present invention.
  • Figure 10 is a schematic structural view of a water tank of the present invention.
  • Figure 11 is a cross-sectional view of the water tank of the present invention.
  • Figure 12 is a schematic view showing the assembly of the lever and the floating bucket of the present invention.
  • Figure 13 is a schematic view showing the structure of the lever and the floating bucket of the present invention.
  • Figure 14 is a cross-sectional view showing the assembly of the present lever and the floating bucket.
  • Valve body 1 water inlet passage 11
  • a water stop valve disclosed in the present invention includes a valve body 1 , a valve stem 2 , a water blocking plug 3 , and a driving mechanism 4 .
  • a water inlet passage 11 and a water outlet passage 12 are formed in the valve body, and a water sealing surface 13 is provided between the water inlet passage 11 and the water outlet passage 12, and the water sealing surface 13 communicates with the water inlet passage 11 and the water outlet passage 12.
  • a cavity 14 is formed in the valve body 1 above the sealing surface 13, and a mounting hole 15 is formed in the valve body 1 above the cavity 14.
  • the central portion of the valve stem 2 is moved up and down and sealed in the mounting hole 15, and the sealing piston 21 can be sleeved in the middle of the valve stem 2, and the sealing piston 21 is sealingly engaged with the mounting hole 15 of the valve body 1.
  • the upper portion of the valve stem 2 protrudes from the mounting hole 15 and is connected to the drive mechanism 4, and the drive mechanism 4 drives the valve stem 2 to move up and down.
  • a back pressure hole 31 is formed in the water blocking plug 3, and the lower portion of the valve stem 2 is inserted up and down into the back pressure hole 31 of the water blocking plug 3, and a gap is left between the lower portion of the valve stem 2 and the side wall of the back pressure hole 31.
  • the water blocking plug 3 is placed in the cavity 14, and there is a water gap between the water blocking plug 3 and the cavity 14, a back pressure chamber 16 is formed above the water blocking plug 3, and the water passing channel 11 and the back pressure chamber 16 are connected through the water gap.
  • the back pressure chamber 16 communicates with the back pressure hole 31, the back pressure hole 31 communicates with the water passage 12, the valve rod 2 forms a sealing end surface 22 matching the back pressure hole 31, the valve rod 2 moves up, and the sealing end surface 22 opens the back pressure hole 31.
  • the water inlet passage 11 and the water outlet passage 12 communicate with the water inlet, the valve stem 2 moves downward and the water blocking plug 3 moves downward, the sealing end surface 22 blocks the back pressure hole 31, the water blocking plug 3 blocks the sealing water surface 13, and the water flows through the water gap. Entering the back pressure chamber 16, the water pressure causes the water blocking plug 3 to further block the sealing surface 13 to form a back pressure and stop the water.
  • a sealing rib 131 is formed on the sealing surface 13.
  • the lower portion of the valve stem 2 forms a constricted section 23, and the back pressure hole 31 of the water blocking plug 3 is sleeved on the constricted section 23 of the valve stem 2.
  • the length of the neck portion 23 is preferably larger than the length of the back pressure hole 31.
  • the sealing end surface 22 is provided as a wedge-shaped surface, and the upper end of the back pressure hole 31 forms a sealing slope 311 matching the wedge surface, so that the sealing performance is good.
  • the water blocking plug 3 can be integrally formed.
  • the water blocking plug 3 is composed of an injection molded part 32 and a rubber member 33, and an injection cavity is formed in the injection molded part 32, and the rubber member 33 is embedded in the injection molded part. 32 in the cavity.
  • the driving mechanism 4 includes a swinging rod 41, a compression spring 42, a connecting rod 43 and a limiting member 44.
  • the middle portion of the swinging rod 41 is pivotally connected to the valve body 1, and one end of the swinging rod 41 is connected to the valve stem 2, and the valve stem 2 swings with the swinging rod 41. And move up and down.
  • the other end of the swinging rod 2 is connected to one end of the connecting rod 43.
  • the compression spring 42 is mounted on the valve body 1 and one end abuts against the valve body 1.
  • the other end of the compression spring 42 abuts against one end of the connecting rod 43 of the swinging rod 41, which is a swing rod. 2 swings provide power.
  • the limiting member 44 is movably mounted on the valve body 1.
  • the limiting member 44 restricts the movement of the connecting rod 43.
  • the lower pressing and urging limiting member 44 drives the limiting member 44 to release the restriction on the connecting rod 43.
  • the compression spring 42 drives the swinging rod 41. Move down and interlock the valve stem 2 and the water blocking plug 3 downward.
  • the limiting member 44 is vertically mounted in the valve body 1, and a spring (not shown) is mounted between the limiting member 44 and the valve body 1. The lower pressing and shifting member 44 is moved downward to release the coupling. The limit of the rod 43.
  • the valve body 1 is provided with a mounting seat 17, and a receiving cavity is formed between the mounting seat 17 and the valve body 1.
  • the limiting member 44 is placed in the accommodating cavity, and the retaining hole 171 is formed in the mounting seat 17, and the limiting member is
  • the middle portion of the 44 is a limiting portion, and the lower portion of the limiting member 44 is inserted into the retaining hole 171, and the diameter of the limiting portion of the limiting member 44 is larger than the diameter of the retaining hole 171; one end of the spring abuts against the mounting seat 17, and the other end One end abuts against the limiting portion of the limiting member 44.
  • the upper end of the limiting member 44 is disposed as a wedge portion, and the connecting rod 43 is correspondingly provided with a slot.
  • the wedge portion of the limiting member 44 is inserted into the slot of the connecting rod 43 to restrict the movement of the connecting rod 43.
  • the swing lever 41 is coupled to the link 43 by means of a snap-fit slot structure.
  • the rocker 41 is provided with a block 411, and the link 43 is provided with a card slot 431.
  • the block 411 of the swing lever 41 is engaged in the slot 431 of the link 43 to connect the swing lever 41 to the link 43.
  • the link 43 is radially connected to the swing lever 41.
  • the lower pressing limit limiting member 44 drives the limiting member 44 to release the restriction on the connecting rod 43, the compression spring 42 drives the swinging rod 41 to move downward, and the linked valve stem 2 and the water blocking plug 3 are moved downward.
  • the sealing end surface 22 blocks the back pressure hole 31, the water blocking plug 3 blocks the sealing water surface 13, and the water flow enters the back pressure chamber 16 through the water gap, and the water pressure causes the water blocking plug 3 to further block the sealing surface 13 to form a back pressure and stop the water.
  • the driving mechanism 4 can also be an existing structure, such as a swinging rod and a floating bucket.
  • the middle portion of the swinging rod is pivotally connected to the valve body 1.
  • One end of the swinging rod is connected to the valve stem 2, and the other end of the swinging rod is connected to the floating bucket, and the swinging rod is connected with the floating bucket.
  • the present invention also includes an outer water tank 51, an inner water tank 52, a water leakage preventing tank 53, an outer floating tank 61, an inner floating tank 62, a leak preventing floating tank 63, and a lever 7.
  • the outer water tank 51 is mounted on the valve body 1, and the water inlet hole 511 is provided at the bottom of the outer water tank 51.
  • the inner water tank 52 is disposed in the outer water tank 51, and the inner water tank 52 has a lower height than the outer water tank 51, water.
  • the outer water tank 51 overflows to the inner water tank 52.
  • the lever 7 is pivotally connected to the valve body 1.
  • One end of the lever 7 is mounted with an outer floating barrel 61, the outer floating barrel 61 is placed in the outer water tank 51, and the other end of the lever 7 is mounted with an inner floating barrel 62, and the inner floating barrel 62 is placed in the inner water tank 52.
  • the plug 621 is mounted on the lower end of the inner floating barrel 62.
  • a cylindrical slot 71 is formed at each end of the lever 7, and a bottom portion of the slot 71 is formed with a receiving slot 72, and the outer floating barrel 61 and the inner floating barrel 62 are respectively connected.
  • the ball heads 611, 622, the ball heads 611, 622 are snapped into the cylindrical slot 71 and are respectively mounted at the ends of the lever 7.
  • the leakage preventing tank 53 is mounted on the valve body 1, and the leakage preventing tank 53 communicates with the inner water tank 52 via the water passage 531, and the lever 7 swings to block the plug 621 to seal the water passage 531 or open the water passage 621.
  • the anti-leakage floating bucket 63 is placed in the leakage preventing tank 53, and the leakage preventing floating bucket 63 is connected with the limiting member 44.
  • the rising of the leakage preventing floating bucket 63 drives the limiting member 44 to release the restriction on the connecting rod 43, and the compression spring 42 drives The swinging rod 41 is moved downward, the valve stem 2 and the water blocking plug 3 are moved downward, the sealing end surface 22 blocks the back pressure hole 31, the water blocking plug 3 blocks the sealing water surface 13, and the water flows through the water gap into the back pressure chamber 16, the water The pressure causes the water blocking plug 3 to further block the sealing surface 13 to form a back pressure and stop the water.
  • the first magnetic element 441 is mounted on the limiting member 44. Specifically, the first magnetic element 441 is mounted on the lower portion of the limiting member 44, and the second magnetic attraction member 441 is attached to the upper end of the leakage preventing floating barrel 63.
  • the magnetic element 631 rises and the anti-leakage float 63 rises, so that the second magnetic element 631 adsorbs the first magnetic element 441 to drive the limit member 44 downward to release the restriction on the link 43.
  • the inlet valve When the inlet valve is normally in water, the water enters the outer water tank from the water inlet hole at the bottom of the outer water tank, and the water level of the outer water tank rises, so that the outer floating tank placed in the outer water tank rises, driving the lever to swing and being placed in the inner water tank.
  • the inner floating bucket is lowered, so that the plug installed at the lower end of the inner floating bucket blocks the water passage connecting the inner water tank and the leakage preventing tank; as the water level of the outer water tank continues to rise, the water overflows into the inner water tank;
  • the control valve opens the inlet passage of the valve body, and the inlet valve normally enters the water.
  • the water passage connecting the inner water tank and the leakage preventing tank is opened; the water in the inner water tank enters the leakage preventing tank, and the leakage preventing floating bucket in the leakage preventing tank moves (upward floating), and the leakage preventing bucket rises to adsorb the second magnetic attraction element
  • the first magnetic element drives the limit member to move downward to release the restriction on the connecting rod
  • the compression spring drives the swing rod to move downward
  • the valve stem and the water blocking plug move downward
  • the sealing end face blocks the back pressure hole
  • the water blocking plug blocks Sealing the water surface
  • the water flows through the water gap into the back pressure chamber, and the water pressure causes the water blocking plug to further block the sealing surface to form a back pressure and stop the water.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Float Valves (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

一种止水阀，进水通道（11）和出水通道（12）之间设置封水面（13），封水面（13）上方的阀体（1）中形成腔体（14）；堵水塞（3）中形成背压孔（31），阀杆（2）下部上下移动插入安装在堵水塞（3）的背压孔（31）中，堵水塞（3）置于腔体（14）中且与腔体（14）之间存在过水间隙，堵水塞（3）上方形成背压腔（16），阀杆（2）上形成与背压孔（31）匹配的密封端面（22），阀杆（2）上移，密封端面（22）打开背压孔（31），进水通道（11）和出水通道（12）连通进水，阀杆（2）下移连带堵水塞（3）下移，密封端面（22）封堵背压孔（31），堵水塞（3）封堵封水面（13），水流经过水间隙进入背压腔（16），水压使堵水塞（3）封堵封水面（13）止水。该止水阀可以及时停止进水阀进水。

Description

一种止水阀 技术领域
本发明涉及进水阀技术领域，尤其是指一种止水阀。
背景技术
现有技术中，进水阀通常包括进水管、顶盖、背压垫、摆臂、浮桶和止水水箱，进水管的下端安装在水箱的供水管上，顶盖安装在进水管的上端，顶盖上开设背压孔，摆臂的中段枢设在顶盖上，摆臂的一端正对背压孔，并安装背压垫，摆臂的另一端与浮桶的调节杆连接，浮桶安装在止水水箱中，而止水水箱安装在进水管上，各构件之间设有保证水密性的密封件。
使用时，当止水水箱水位下降，浮桶受重力作用而随之下降，带动摆臂偏转，使背压垫开启背压孔，水从供水管流经进水管、顶盖及背压孔进入水箱中，实现进水。当止水水箱水位上升后，浮桶受浮力作用而随之上升，带动摆臂偏转，使背压垫重新关闭背压孔，止水垫产生背压力澎涨，堵住进水口，实现停止进水。
或者，进水阀包括阀体、阀盖、止水垫、第一曲臂、第二曲臂、控制杆、浮桶和止水水箱；阀盖安装在阀体中与阀体形成进水腔，进水腔中形成具有进水孔的止水面，进水腔进水端与进水通道相通，进水腔出水端与出水通道相通；阀盖上安装止水垫位于止水面上，止水垫上设置过水孔，止水垫与阀盖之间形成背压腔；阀盖上形成背压孔，背压孔连通背压腔与外部；第二曲臂通过垂直于阀盖的第二转动轴枢接在阀盖上，第二转动轴将第二曲臂区分为长臂与短臂，长臂端部为自由端，第一曲臂固定端的端部通过垂直于阀盖的第一转动轴枢接在阀盖上，第一曲臂自由端跨过背压孔上方与第二曲臂短臂滑动连接，第一曲臂设置与背压孔位置相对的背压垫；长臂自由端与设置在浮桶上的控制杆连接，浮桶置于止水水箱中，止水水箱安装在阀体上。
当止水水箱水位下降，浮桶受重力作用而随之下降，带动控制杆下降，带动第二曲臂往下摆动，驱使第一曲臂远离背压孔摆动，使背压垫开启背压孔，水经阀体进水通道进入水箱中，实现进水。当止水水箱水位上升后，浮桶受浮力作用而随之上升，带动控制杆下降，带动第二曲臂往上摆动，驱使第一曲臂靠近背压孔摆动，使背压垫重新关闭背压孔，止水垫产生背压力而变形封住止水面上的进水孔，实现停止进水。
所述进水阀在止水水箱的底部设置有漏水孔，水箱排水水位下降后，止水水箱中的水通过漏水孔进入水箱中，使得浮桶失去浮力，受重力作用而随之下降，带动摆臂偏转，开启背压孔，实现进水。然而，水箱在使用一段时间后容易出现故障无法关闭，如排水阀出现漏水，此时，出现进水阀持续进水，而水箱持续漏水的现象，造成水资源浪费。
发明内容
本发明的目的在于提供一种止水阀，可以及时停止进水阀进水，而且使用寿命较长。
为达成上述目的，本发明的解决方案为：
一种止水阀，包括阀体、阀杆、堵水塞及驱动机构；阀体中形成进水通道和出水通道，进水通道和出水通道之间设置封水面，封水面连通进水通道和出水通道；封水面上方的阀体中形成腔体，腔体上方的阀体中形成安装孔；阀杆中部上下移动且密封安装在安装孔中，阀杆上部伸出安装孔与驱动机构连接，驱动机构驱使阀杆上下移动，堵水塞中形成背压孔，阀杆下部上下移动插入安装在堵水塞的背压孔中，堵水塞置于腔体中与腔体之间存在过水间隙，堵水塞上方形成背压腔，过水间隙连通进水通道和背压腔，背压腔连通背压孔，背压孔连通出水通道，阀杆上形成与背压孔匹配的密封端面，阀杆上移，密封端面打开背压孔，进水通道和出水通道连通进水，阀杆下移连带堵水塞下移，密封端面封堵背压孔，堵水塞封堵封水面，水流经过水间隙进入背压腔，水压使堵水塞进一步封堵封水面而止水。
进一步，阀杆下部形成缩颈段，堵水塞的背压孔套接在阀杆的缩颈段上。
进一步，缩颈段的长度大于背压孔的长度。
进一步，密封端面设置为楔形面，背压孔上端形成与楔形面匹配的密封斜面。
进一步，封水面上形成一圈凸起筋条。
进一步，阀杆中部套接密封活塞，密封活塞与阀体的安装孔密封配合。
进一步，堵水塞由注塑件和橡胶件组成，注塑件中形成容置腔，橡胶件嵌入安装在注塑件的容置腔中。
进一步，驱动机构包括摆杆、压缩弹簧、连杆及限位件；摆杆中段枢接在阀体上，摆杆一端连接阀杆，阀杆随摆杆摆动而上下移动；摆杆另一端连接连杆一端，压缩弹簧安装在阀体中一端抵靠在阀体上，压缩弹簧另一端抵靠在摆杆连接连杆一端上，为摆杆摆动提供动力；限位件活动安装在阀体上，限位件限制连杆活动，下压拨动限位件驱使限位件释放对连杆的限制，压缩弹簧驱使摆杆下移而连动阀杆及堵水塞下移。
进一步，限位件上下活动安装在阀体中，限位件与阀体之间安装弹簧，下压拨动限位件下移释放对连杆的限制。
进一步，阀体上设置安装座，安装座与阀体之间形成容置腔，限位件置于容置腔中，安装座中形成让位孔，限位件的中部为限位部，限位件下部插入让位孔中，而限位件的限位部的直径大于让位孔的直径；弹簧一端抵靠在安装座上，另一端抵靠在限位件的限位部上。
进一步，限位件的上端设置为楔形部，连杆对应设置插槽，限位件的楔形部插入连杆的插槽中限制连杆活动。
进一步，摆杆借助卡扣卡槽结构与连杆连接。
进一步，摆杆上设置卡块，而连杆上设置卡槽，摆杆的卡块卡入连杆的卡槽中而使摆杆与连杆连接。
进一步，连杆与摆杆径向连接。
采用上述方案后，本发明在进水阀漏水时，阀杆上移，密封端面打开背压孔，进水通道和出水通道连通进水；阀杆下移连带堵水塞下移，密封端面封堵背压孔，堵水塞封堵封水面，水流经过水间隙进入背压腔，水压使堵水塞进一步封堵封水面而止水，可以及时停止进水阀进水。
同时，本发明利用堵水塞封堵封水面，水流经过水间隙进入背压腔，水压使堵水塞进一步封堵封水面而止水，堵水塞可以多次重复使用，较现有技术的背压垫使用寿命较长。
附图说明
图1是本发明的立体分解图；
图2是本发明进水状态的结构示意图；
图3是本发明止水状态的结构示意图；
图4是本发明进水状态的剖视图；
图4a是图4的局部放大图；
图5是本发明止水状态的剖视图；
图5a是图5的局部放大图；
图6是本发明磁吸元件分开状态的剖视图；
图6a是图6的局部放大图；
图7是本发明磁吸元件吸合状态的剖视图；
图8是本发明内部结构示意图；
图9是本发明漏水状态的结构示意图；
图10是本发明水箱的结构示意图；
图11是本发明水箱的剖视图；
图12是本发明杠杆与浮桶的装配示意图；
图13是本发明杠杆与浮桶的结构示意图；
图14是本发杠杆与浮桶装配剖视图。
标号说明
阀体1进水通道11
封水面13筋条131
腔体14安装孔15
背压腔16安装座17
让位孔171阀杆2
密封活塞21密封端面22
缩颈段23堵水塞3
背压孔31密封斜面311
注塑件32橡胶件33
驱动机构4摆杆41
卡块411压缩弹簧42
连杆43卡槽431
限位件44第一磁吸元件441
外水箱51进水孔511
内水箱52防漏水箱53
过水通道531外浮桶61
球头611内浮桶62
堵头621球头622
防漏浮桶63第二磁吸元件631
杠杠7插槽71
剖槽72
具体实施方式
以下结合附图及具体实施例对本发明做详细描述。
请参阅图1至图14所述，本发明揭示的一种止水阀，包括阀体1、阀杆2、堵水塞3及驱动机构4。
阀体中形成进水通道11和出水通道12，进水通道11和出水通道12之间设置封水面13，封水面13连通进水通道11和出水通道12。封水面13上方的阀体1中形成腔体14，腔体14上方的阀体1中形成安装孔15。
阀杆2中部上下移动且密封安装在安装孔15中，可以在阀杆2中部套接密封活塞21，密封活塞21与阀体1的安装孔15密封配合。阀杆2上部伸出安装孔15与驱动机构4连接，驱动机构4驱使阀杆2上下移动。堵水塞3中形成背压孔31，阀杆2下部上下移动插入安装在堵水塞3的背压孔31中，阀杆2下部与背压孔31侧壁之间留有间隙。
堵水塞3置于腔体14中，堵水塞3与腔体14之间存在过水间隙，堵水塞3上方形成背压腔16，过水间隙连通进水通道11和背压腔16，背压腔16连通背压孔31，背压孔31连通出水通道12，阀杆2上形成与背压孔31匹配的密封端面22，阀杆2上移，密封端面22打开背压孔31，进水通道11和出水通道12连通进水，阀杆2下移连带堵水塞3下移，密封端面22封堵背压孔31，堵水塞3封堵封水面13，水流经过水间隙进入背压腔16，水压使堵水塞3进一步封堵封水面13形成背压而止水。
为使得堵水塞3与封水面13较好密封，封水面13上形成一圈凸起筋条131。本实施例中，阀杆2下部形成缩颈段23，堵水塞3的背压孔31套接在阀杆2的缩颈段23上。缩颈段23的长度优选为大于背压孔31的长度。密封端面22设置为楔形面，背压孔31上端形成与楔形面匹配的密封斜面311，使得密封性能较好。堵水塞3可以一体成型，本实施例中，如图1所示，堵水塞3由注塑件32和橡胶件33组成，注塑件32中形成容置腔，橡胶件33嵌入安装在注塑件32的容置腔中。
驱动机构4包括摆杆41、压缩弹簧42、连杆43及限位件44；摆杆41中段枢接在阀体1上，摆杆41一端连接阀杆2，阀杆2随摆杆41摆动而上下移动。摆杆2另一端连接连杆43一端，压缩弹簧42安装在阀体1中一端抵靠在阀体1上，压缩弹簧42另一端抵靠在摆杆41连接连杆43一端上，为摆杆2摆动提供动力。
限位件44活动安装在阀体1上，限位件44限制连杆43活动，下压拨动限位件44驱使限位件44释放对连杆43的限制，压缩弹簧42驱使摆杆41下移而连动阀杆2及堵水塞3下移。
本实施例中，限位件44上下活动安装在阀体1中，限位件44与阀体1之间安装弹簧（图中未标示），下压拨动限位件44下移释放对连杆43的限制。
具体为：阀体1上设置安装座17，安装座17与阀体1之间形成容置腔，限位件44置于容置腔中，安装座17中形成让位孔171，限位件44的中部为限位部，限位件44下部插入让位孔171中，而限位件44的限位部的直径大于让位孔171的直径；弹簧一端抵靠在安装座17上，另一端抵靠在限位件44的限位部上。
限位件44的上端设置为楔形部，连杆43对应设置插槽，限位件44的楔形部插入连杆43的插槽中限制连杆43活动。摆杆41借助卡扣卡槽结构与连杆43连接。优选为，摆杆41上设置卡块411，而连杆43上设置卡槽431，摆杆41的卡块411卡入连杆43的卡槽431中而使摆杆41与连杆43连接。本实施例中，连杆43与摆杆41径向连接。
在进水阀漏水时，下压拨动限位件44驱使限位件44释放对连杆43的限制，压缩弹簧42驱使摆杆41下移，连动阀杆2及堵水塞3下移，密封端面22封堵背压孔31，堵水塞3封堵封水面13，水流经过水间隙进入背压腔16，水压使堵水塞3进一步封堵封水面13形成背压而止水，使水箱出现漏水时，及时停止进水阀进水，节约水资源。
驱动机构4也可以为现有结构，如包括摆杆和浮桶，摆杆中段枢接在阀体1上，摆杆一端连接阀杆2，摆杆另一端连接浮桶，摆杆随浮桶上下移动摆动，连带阀杆2而上下移动。
本发明还包括外水箱51、内水箱52、防漏水箱53、外浮桶61、内浮桶62、防漏浮桶63和杠杠7。
外水箱51安装在阀体1上，外水箱51底部设置进水孔511，如图10及图11所示，内水箱52设置在外水箱51中，内水箱52的高度低于外水箱51，水由外水箱51溢流至内水箱52。
杠杠7枢接在阀体1上，杠杆7一端安装外浮桶61，外浮桶61置于外水箱51中，杠杆7另一端安装内浮桶62，内浮桶62置于内水箱52中，内浮桶62的下端安装堵头621。
本实施例中，如图12至14所示，在杠杆7两端分别形成圆柱形插槽71，插槽71底部形成让位剖槽72，而外浮桶61和内浮桶62上分别连接球头611、622，球头611、622卡入圆柱形插槽71中而分别安装在杠杠7两端。
防漏水箱53安装在阀体1上，防漏水箱53借助过水通道531与内水箱52连通，杠杆7摆动使堵头621封住过水通道531或者打开过水通道621。防漏浮桶63置于防漏水箱53中，防漏浮桶63与限位件44连动连接，防漏浮桶63上升驱使限位件44释放对连杆43的限制，压缩弹簧42驱使摆杆41下移，连动阀杆2及堵水塞3下移，密封端面22封堵背压孔31，堵水塞3封堵封水面13，水流经过水间隙进入背压腔16，水压使堵水塞3进一步封堵封水面13形成背压而止水。
限位件44中安装第一磁吸元件441，具体为：第一磁吸元件441安装在限位件44下部，在防漏浮桶63上端安装与第一磁吸元件441相互吸附的第二磁吸元件631；防漏浮桶63上升使第二磁吸元件631吸附第一磁吸元件441驱使限位件44下移释放对连杆43的限制。
进水阀正常进水时，水由外水箱底部的进水孔进入外水箱，外水箱水位的升高，使得置于外水箱中的外浮桶上升，驱使杠杠摆动而连动置于内水箱中的内浮桶下降，使得安装在内浮桶下端的堵头将连接内水箱与防漏水箱连通的过水通道堵住；随着外水箱水位继续上升，水溢流至内水箱中；此时，内水箱的水无法进入防漏水箱，置于防漏水箱中的防漏浮桶不动作（不上浮），控制阀门打开阀体的进水通道，进水阀正常进水。
漏水时，外水箱的水位逐渐下降，置于外水箱中的外浮桶下降，驱使杠杠摆动而连动置于内水箱中的内浮桶上升，使得安装在内浮桶下端的堵头将连接内水箱与防漏水箱连通的过水通道打开；内水箱的水进入防漏水箱，置于防漏水箱中的防漏浮桶动作（上浮），防漏浮桶上升使第二磁吸元件吸附第一磁吸元件驱使限位件下移释放对连杆的限制，压缩弹簧驱使摆杆下移，连动阀杆及堵水塞下移，密封端面封堵背压孔，堵水塞封堵封水面，水流经过水间隙进入背压腔，水压使堵水塞进一步封堵封水面形成背压而止水。
以上所述仅为本发明的优选实施例，并非对本案设计的限制，凡依本案的设计关键所做的等同变化，均落入本案的保护范围。

Claims (10)

  1. 一种止水阀，其特征在于：包括阀体、阀杆、堵水塞及驱动机构；阀体中形成进水通道和出水通道，进水通道和出水通道之间设置封水面，封水面连通进水通道和出水通道；封水面上方的阀体中形成腔体，腔体上方的阀体中形成安装孔；阀杆中部上下移动且密封安装在安装孔中，阀杆上部伸出安装孔与驱动机构连接，驱动机构驱使阀杆上下移动，堵水塞中形成背压孔，阀杆下部上下移动插入安装在堵水塞的背压孔中，堵水塞置于腔体中与腔体之间存在过水间隙，堵水塞上方形成背压腔，过水间隙连通进水通道和背压腔，背压腔连通背压孔，背压孔连通出水通道，阀杆上形成与背压孔匹配的密封端面，阀杆上移，密封端面打开背压孔，进水通道和出水通道连通进水，阀杆下移连带堵水塞下移，密封端面封堵背压孔，堵水塞封堵封水面，水流经过水间隙进入背压腔，水压使堵水塞进一步封堵封水面而止水。
  2. 如权利要求1所述的一种止水阀，其特征在于：阀杆下部形成缩颈段，堵水塞的背压孔套接在阀杆的缩颈段上。
  3. 如权利要求1所述的一种止水阀，其特征在于：密封端面设置为楔形面，背压孔上端形成与楔形面匹配的密封斜面。
  4. 如权利要求1所述的一种止水阀，其特征在于：阀杆中部套接密封活塞，密封活塞与阀体的安装孔密封配合。
  5. 如权利要求1所述的一种止水阀，其特征在于：驱动机构包括摆杆、压缩弹簧、连杆及限位件；摆杆中段枢接在阀体上，摆杆一端连接阀杆，阀杆随摆杆摆动而上下移动；摆杆另一端连接连杆一端，压缩弹簧安装在阀体中一端抵靠在阀体上，压缩弹簧另一端抵靠在摆杆连接连杆一端上，为摆杆摆动提供动力；限位件活动安装在阀体上，限位件限制连杆活动，下压拨动限位件驱使限位件释放对连杆的限制，压缩弹簧驱使摆杆下移而连动阀杆及堵水塞下移。
  6. 如权利要求1所述的一种止水阀，其特征在于：限位件上下活动安装在阀体中，限位件与阀体之间安装弹簧，下压拨动限位件下移释放对连杆的限制。
  7. 如权利要求6所述的一种止水阀，其特征在于：阀体上设置安装座，安装座与阀体之间形成容置腔，限位件置于容置腔中，安装座中形成让位孔，限位件的中部为限位部，限位件下部插入让位孔中，而限位件的限位部的直径大于让位孔的直径；弹簧一端抵靠在安装座上，另一端抵靠在限位件的限位部上。
  8. 如权利要求1所述的一种止水阀，其特征在于：限位件的上端设置为楔形部，连杆对应设置插槽，限位件的楔形部插入连杆的插槽中限制连杆活动。
  9. 如权利要求1所述的一种止水阀，其特征在于：摆杆借助卡扣卡槽结构与连杆连接。
  10. 如权利要求9所述的一种止水阀，其特征在于：摆杆上设置卡块，而连杆上设置卡槽，摆杆的卡块卡入连杆的卡槽中而使摆杆与连杆连接。
PCT/CN2017/072317 2017-01-24 2017-01-24 一种止水阀 Ceased WO2018137052A1 (zh)

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