CN212407736U - Electromagnetic valve - Google Patents

Abstract

The utility model relates to an electromagnetic valve, including the ferromagnetic valve body that is tubular structure that has, a valve seat, the wall thickness is 2.0-3.0 mm's valve barrel, a valve core, the terminal box is installed outward to the valve body, the valve body is embedded to have the coil, valve barrel and disk seat correspond to be installed in the upper and lower tip of valve body and all partly imbed in the ring of coil, and relative surface does not contact, the case inserts in the valve barrel and relative disk seat moves in opposite directions, there is the gap that the width is 0.8-1.5mm at the interval between case and the valve barrel, detachable connections has the valve rod in the case, the lower part and the disk seat sealing connection of valve rod, upper portion and disk seat elastic connection, the lower extreme of case is equipped with the gasket that the thickness is. The utility model discloses a well valve body, disk seat, valve barrel and case all have the ferromagnetism, just through drawing magnetism each other after the coil circular telegram, make full use of magnetism make the valve rod remove and overcome pressure differential force, and then improve the opening and closing valve ability of solenoid valve.

Description

Electromagnetic valve

Technical Field

The utility model belongs to the technical field of the valve switch and specifically relates to a can effectively utilize magnetic force, improve the solenoid valve of ability of opening and shutting.

Background

Solenoid valves are electromagnetically controlled industrial devices, which are the basic elements of automation for controlling fluids, used in industrial control systems to regulate the direction, flow, velocity and other parameters of media. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility are ensured according to the performance of the solenoid valve. The electromagnetic valves are various, different electromagnetic valves play different roles in different positions of a control system, and the existing electromagnetic valves are all characterized in that after being electrified, an electromagnetic coil generates magnetic attraction to overcome the elastic force of a spring so as to drive a valve core to act, and further drive a piston rod, namely a valve rod, to open and close the valve. At this moment, the problem that the elastic force of a spring needs to be overcome when a valve rod moves exists, the whole magnetism in the electromagnetic valve cannot be fully utilized in the existing structure, the problem that the magnetic force is insufficient due to the fact that part of magnetism in the structure cannot be utilized exists, meanwhile, the strength of the electromagnetic valve for controlling the valve is insufficient due to the fact that the electromagnetic attraction force is too small or too large, the opening and closing capacity of the electromagnetic valve is poor, and the performance of the electromagnetic valve is poor.

SUMMERY OF THE UTILITY MODEL

To present not enough, the utility model provides a can effectively utilize magnetic force, improve the solenoid valve of ability of opening and shutting.

The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic valve comprises a ferromagnetic valve body which is in a cylindrical structure, a valve seat, a valve sleeve with the wall thickness of 2.0-3.0mm and a valve core, a junction box is arranged outside the valve body, an annular coil electrically connected with the junction box is embedded in the valve body, the valve sleeve and the valve seat are correspondingly arranged at the upper end part and the lower end part of the valve body and are partially matched and embedded in the ring of the coil, and the opposite surfaces of the valve sleeve and the valve seat are not contacted, the valve core is inserted into the valve sleeve and can move oppositely relative to the valve seat in the valve sleeve, and a gap with the width of 0.8-1.5mm is arranged between the valve core and the valve sleeve at an interval, the valve rod with upper and lower end parts extending out of the upper and lower end parts of the valve body is detachably connected in the valve core, the lower part of the valve rod is hermetically connected with the valve seat at a position corresponding to the bottom end of the valve seat, the position corresponding to the upper part of the valve seat is elastically connected with the valve seat, and the lower end of the valve core is provided with a magnetic isolation gasket with the thickness of 0.05-0.1 mm.

Preferably, the upper portion of disk seat matches and is embedded with annular first copper sheathing, first copper sheathing is established outside the valve rod and the valve rod still overlaps and is equipped with the spring outward, the both ends correspondence of spring and first copper sheathing and valve rod fixed connection, the valve rod is through establishing Y type sealing washer and disk seat sealing connection in its outside at the cover.

Preferably, an external thread is arranged outside the valve rod, an internal thread is arranged in the valve core, the valve rod and the valve core are detachably connected through the matching of the internal thread and the external thread, a magnetic isolation gasket is also arranged at the upper end of the valve core, coil sealing rings are arranged at the upper end and the lower end of each coil, an annular second copper sleeve embedded on the inner wall of the valve sleeve is arranged between the valve sleeve and the valve rod, and the outer wall of the valve rod is sleeved with the second copper sleeve.

Preferably, the inner wall of the valve body is provided with a positioning pin for positioning the valve core to move.

Preferably, the upper ends of the valve sleeve and the valve body are positioned on the same plane, an annular blocking sleeve cover is arranged at the upper end of the valve sleeve, the upper end of the valve body is connected with an annular valve cover arranged at the upper end of the blocking sleeve, a valve cover sealing ring is arranged between the valve cover and the valve sleeve, and a dustproof cover arranged at the top end of the valve rod in a covering mode is arranged between the blocking sleeve and the valve cover.

Preferably, the valve body is of a cylindrical structure with an n-shaped vertical section, the valve seat and the valve sleeve are of cylindrical structures with inverted T-shaped and T-shaped vertical sections, a step-shaped upper surface is arranged at the upper end of the valve seat, the thickness of the vertical part of the step-shaped upper surface is matched with that of the valve sleeve, and the thickness of the horizontal part is matched with that of the valve core.

Preferably, the diameter of the copper wire of the coil is 0.27-0.30 mm.

Preferably, the valve body is provided with at least two cylindrical structures at intervals, each cylindrical structure is internally provided with a coil, a valve seat, a valve sleeve and a valve core, the junction box comprises a box body, a circuit board electrically connected with the coils and a socket arranged on the box body and electrically connected with the circuit board are arranged in the box body.

Preferably, the box body is further provided with an indicator light electrically connected with the circuit board.

Preferably, the socket is provided with a plurality of pins electrically connected with the circuit board.

The beneficial effects of the utility model reside in that: the utility model discloses a well valve body, the disk seat, valve barrel and case all have ferromagnetism, after the coil circular telegram, the coil both sides all can produce magnetism, the valve body is the outside of covering the coil, valve barrel and disk seat all are located the inside of valve body and coil, valve barrel and disk seat just attract the magnetism of valve body and coil to come in, the case is located the valve barrel, the case then attracts the magnetism of valve barrel to come in, and valve barrel and disk seat are contactless in the coil at this moment, namely have a distance between them, under the interact of magnetic force, the case just makes relative disk seat relative movement in the valve barrel and attracts, the moving distance of case just becomes the switching stroke of this solenoid valve, the valve rod is detachable connections with the case, the valve rod just removes the action that reaches the valve that opens and shuts in the case and close along with it in case and disk seat along with it, through attracting each other, magnetic attraction has increased magnetic attraction, the thickness of valve barrel and the gap between the case has just ensured simultaneously that the magnetic force is in the, the problem of overlarge attraction force cannot be caused even though magnetism is attracted, and respective magnetism is effectively utilized, so that the capacity of an opening and closing valve of the electromagnetic valve is improved, and the performance of the electromagnetic valve is enhanced.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is a schematic top view of the present invention;

part names and serial numbers in the figure: 1-valve body 10-baffle sleeve 11-valve cover 12-valve cover sealing ring 13-dustproof cover 2-valve seat 20-first copper sleeve 21-spring 22-step-shaped upper surface 3-valve sleeve 30-second copper sleeve 4-valve core 40-gasket 5-junction box 50-box body 51-circuit board 52-socket 53-indicator lamp 520-pin 6-coil 60-coil sealing ring 7-valve rod 70-Y type sealing ring 8-positioning pin

Detailed Description

To clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, which are clearly and completely described below. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Furthermore, directional terms as referred to in the present disclosure, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer only to the direction of the attached drawings, and directional terms used are intended to better and more clearly illustrate and understand the present invention rather than to indicate or imply the orientation the present invention must have, and therefore should not be construed as limiting the present invention.

The embodiment of the present invention is shown in fig. 1, a solenoid valve comprises a valve body 1 having ferromagnetism and being a tubular structure, a valve seat 2, a valve sleeve 3 having a wall thickness of 2.0-3.0mm, and a valve core 4, wherein the ferromagnetism generates magnetic attraction and can attract magnetism in a direction of magnetic force, such as pure iron DT4C material, and the tubular structure means that respective two ends are communicated, i.e. corresponding parts can be installed in respective interior, the thickness of the valve sleeve 3 enables the valve sleeve 3 to achieve both magnetic release and magnetic transmission, so that the valve sleeve conveniently attracts magnetism of the valve body 1 and the coil 6, a junction box 5 is installed outside the valve body 1, the junction box 5 provides electric power for the solenoid valve as a part connected with an external power supply, an annular coil 6 electrically connected with the junction box 5 is embedded in the valve body 1, the valve sleeve 3 and the valve seat 2 are correspondingly installed at upper and lower end portions of the valve body 1 and are partially matched with and embedded in a ring of the coil 6, the valve sleeve 3 is not contacted with the opposite surface of the valve seat 2, the valve core 4 is inserted into the valve sleeve 3 and can move oppositely relative to the valve seat 2 in the valve sleeve 3, a gap with the width of 0.8-1.5mm is arranged between the valve core 4 and the valve sleeve 3, when the distance is increased, the magnetism releasing is accelerated, the service life of a product is prolonged, and when the distance is too small, the attraction is generated between the valve core 4 and the valve sleeve, so that the distance is convenient for the magnetism releasing and the attraction of the product, the movement of the valve core 4 can be more smooth, the magnetic effect is not reduced due to the too large distance, and when the distance is too small, the attraction of the valve core 4 is not facilitated. Therefore, under the condition that the overall dimension of a product is fixed, through the thickness of the valve sleeve 3 and the width of a gap between the valve sleeve 3 and the valve core 4, a copper wire with the diameter of 0.27-0.30mm on the coil 6 can be selected, and the corresponding functional requirements of the product can be met, the valve rod 7 with the upper end part and the lower end part extending out of the upper end part and the lower end part of the valve body 1 is detachably connected in the valve core 4, the valve body 1, the coil 6, the valve sleeve 3 (positioned on the upper part of the coil) and the valve seat 2 (positioned on the lower part of the coil), the valve core 4 and the valve rod 7 are sequentially arranged from outside to inside, the valve rod 7 is inserted in the valve core 4 and the valve seat 2, the upper part penetrates out of the valve core 4. Thus, the valve body 1, the valve seat 2, the valve sleeve 3 and the valve core 4 are all ferromagnetic, after the coil 6 is electrified, both sides of the coil 6 can generate magnetism, the valve body 1 wraps the outside of the coil 6, the valve sleeve 3 and the valve seat 2 are both positioned inside the valve body 1 and the coil 6, the valve sleeve 3 and the valve seat 2 attract the magnetism of the valve body 1 and the coil 6, the valve core 4 is positioned in the valve sleeve 3, the valve core 4 attracts the magnetism of the valve sleeve 3, at the moment, the valve sleeve 3 and the valve seat 2 are not contacted in the coil 6, namely, a distance is reserved between the valve sleeve 3 and the valve seat 2, the electromagnetic induction is ensured, at the moment, the valve core 4 and the valve seat 2 form two magnetic poles, under the interaction of magnetic force, the valve core 4 moves in the valve sleeve 3 in opposite directions relative to the valve seat 2 to attract, the movement distance of the valve core 4 is used as the switching stroke of the electromagnetic valve, according, the valve core 4 can penetrate out from the lower end of the valve sleeve 3, or can be a structure positioned in the valve sleeve 3, in order to position the movement of the valve core 4, the inner wall of the valve body 1 is provided with a positioning pin 8 for positioning the movement of the valve core 4, the movement of the valve core 4 is positioned through the positioning pin 8, so that the movement of the valve core 4 is limited within a certain range and moves according to a certain direction, the valve body 1 is provided with the positioning pin 8, at the moment, the valve core 4 is correspondingly provided with a positioning mechanism into which the positioning pin 8 is inserted, the positioning mechanism can be a positioning groove arranged on the valve core 4, the valve rod 7 is detachably connected with the valve core 4, the valve rod 7 achieves the action of opening and closing the valve along with the sliding of the valve core 4, the magnetic attraction between the valve rod and the valve rod is increased, the respective magnetism is effectively utilized, the capability of opening and closing the valve, the lower part of the valve rod 7 is in sealing connection with the valve seat 2 at a position corresponding to the bottom end of the valve seat 2, and is in elastic connection with the valve seat 2 at a position corresponding to the upper part of the valve seat 2, the valve of a product to be controlled is opened or closed through the extension and contraction of the valve rod 7, in the embodiment, the length of the valve rod 7 penetrating out of the valve seat 2 is 8 +/-0.10 mm, the length of the valve rod extending out of the valve seat 2 after moving is 10.8 +/-0.10 mm, namely the stroke of the valve rod is 2.80mm, the lower end of the valve core 4 is provided with a magnetic isolation gasket 40 with the thickness of 0.05-0.1mm, the valve core 4 and the valve seat 2 are prevented from being attracted through the magnetic isolation gasket 40, when the thickness of the gasket 40 is too thick, the magnetic isolation is realized, the magnetic isolation is not beneficial to magnetic attraction, and when the gasket 40 is too thin, the valve core 4 and the valve.

A further improvement is that as shown in fig. 1, an annular first copper sleeve 20 is embedded in the upper portion of the valve seat 2 in a matching manner, the first copper sleeve 20 is sleeved outside the valve rod 7, a spring 21 is further sleeved outside the valve rod 7, two ends of the spring 21 are correspondingly fixedly connected with the first copper sleeve 20 and the valve rod 7, that is, the first copper sleeve 20 is embedded on the side wall opposite to the valve seat 2 and the valve rod 7, on one hand, the valve seat 2 and the valve rod 7 can be prevented from being mutually attracted under the action of magnetic force, on the other hand, friction damage between the valve seat 2 and the valve rod 7 can be avoided, the copper sleeve is wear-resistant, damage cannot be caused in friction with the valve rod 7, the service life of the product is ensured, the spring 21 is in a compressed state when the valve rod 7 relatively moves towards the valve seat 2, after power failure, the magnetic attraction disappears, the elastic force of the spring 21 rebounds to the initial position of the valve rod 7, the valve rod 7 is hermetically connected, at this time, the valve rod 7 is used for controlling the opening and closing of the valve of the product to be controlled, and in order to avoid damage to the electromagnetic valve after the product to be controlled is opened, the Y-shaped sealing ring 70 is used for preventing the controlled fluid from entering the product, so that the damage to the product is avoided.

Further improvement, as shown in fig. 1, the upper end of the valve core is also provided with a magnetic isolation gasket, the upper end and the lower end of the coil are both provided with coil sealing rings, an annular second copper sleeve embedded on the inner wall of the valve sleeve is arranged between the valve sleeve and the valve rod, the second copper sleeve is sleeved on the outer wall of the valve rod, external threads are arranged outside the valve rod 7, internal threads are arranged in the valve core 4, the valve rod 7 and the valve core 4 are detachably connected through the matching of the internal threads and the external threads, the threaded connection is convenient to disassemble and assemble, the valve rod 7 is also convenient to replace after being damaged, the upper end of the valve core 4 is also provided with the magnetic isolation gasket 40, the gasket 40 plays a role in isolating magnetism, the valve core 4 is effectively prevented from being attracted with the valve sleeve 3 or the valve seat 2 in the movement process, and the problem of attraction between the gasket 40 and the valve sleeve or the valve seat, the thickness of the gasket 40 is preferably 0.05-0.1mm, the upper end and the lower end of the coil 6 are respectively provided with the coil sealing ring 60, so that the damage to the coil 6 caused by the fluid entering the coil 6 is avoided, an annular second copper sleeve 30 embedded on the inner wall of the valve sleeve 3 is arranged between the valve sleeve 3 and the valve rod 7, the second copper sleeve 30 is sleeved on the outer wall of the valve rod 7, and the damage to the valve sleeve 3 caused by the sliding of the valve rod 7 is also avoided.

In a further improvement, as shown in fig. 1, the upper ends of the valve sleeve 3 and the valve body 1 are located on the same plane, an annular blocking sleeve 10 covers the upper end of the valve sleeve 3, the upper end of the valve body 1 is connected with an annular valve cover 11 covering the upper end of the blocking sleeve 10, a valve cover sealing ring 12 is arranged between the valve cover 11 and the valve sleeve 3, and a dust cover 13 covering the top end of the valve rod 7 is installed between the blocking sleeve 10 and the valve cover 11, so that the product is convenient to assemble, impurities are prevented from entering, and the smoothness of the sliding of the valve rod 7 is ensured.

In a further improvement, as shown in fig. 1, the valve body 1 is a cylindrical structure with an n-shaped vertical section, the valve seat 2 and the valve sleeve 3 are of a cylindrical structure with inverted T-shaped and T-shaped vertical sections, the upper end of the valve seat 2 is provided with a step-shaped upper surface 22, the thickness of the vertical part of the step-shaped upper surface 22 is matched with that of the valve sleeve 3, the thickness of the horizontal part is matched with that of the valve core 4, such a structural coil 6 is installed at the portion covered under the upper portion of the valve body 1, not exposed to the outside, the two sides of the upper part of the valve sleeve 3 are propped against the upper ends of the coil 6 and the valve core 4 along the same direction, the side edge of the valve seat 2 is propped against the lower end of the coil 6, the structure is compact, the function of attracting magnetism can be better achieved, the stepped upper surface 22 at the upper end of the valve seat 2 avoids the problem of insufficient opening and closing force of the sliding solenoid valve of the valve rod 7 caused by too large distance between the valve sleeve 3 and the valve seat 2 and too weak magnetic attraction.

In a further improvement, as shown in fig. 1 and 2, at least two cylindrical structures are arranged on the valve body 1 at intervals, each cylindrical structure is internally provided with a coil 6, a valve seat 2, a valve sleeve 3 and a valve core 4, the junction box 5 comprises a box body 50, a circuit board 51 electrically connected with the coil 6 and a socket 52 arranged on the box body 50 and electrically connected with the circuit board 51 are arranged in the box body 50, so that the opening and closing of adjacent valves can be controlled by one electromagnetic valve, and the use is more convenient. The box body 50 is further provided with an indicator lamp 53 electrically connected with the circuit board 51, and the opening and closing state of each valve can be clearly known through indication of the indicator lamp 53, so that the operation can be better performed. The socket 52 is provided with a plurality of pins 520 electrically connected with the circuit board 51, and the electrical conduction of different coils 6 can be controlled by conducting different pins 520, as shown in fig. 2, pin a is connected with a 12V dc power supply, pin d is used as a pin with a special function, pins b and c are used for controlling different coils, when connecting pin a and pin b, the electrical conduction of the left coil will light up the corresponding indicator lamp 53, when connecting pins a and c, the electrical conduction of the right coil will light up the indicator lamp 53 corresponding thereto, which is convenient for control, the control state can be visually monitored, and the application is more convenient.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims (10)

1. A solenoid valve, characterized by: comprises a ferromagnetic valve body with a cylindrical structure, a valve seat, a valve sleeve with the wall thickness of 2.0-3.0mm and a valve core, a junction box is arranged outside the valve body, an annular coil electrically connected with the junction box is embedded in the valve body, the valve sleeve and the valve seat are correspondingly arranged at the upper end part and the lower end part of the valve body and are partially matched and embedded in the ring of the coil, and the opposite surfaces of the valve sleeve and the valve seat are not contacted, the valve core is inserted into the valve sleeve and can move oppositely relative to the valve seat in the valve sleeve, and a gap with the width of 0.8-1.5mm is arranged between the valve core and the valve sleeve at an interval, the valve rod with upper and lower end parts extending out of the upper and lower end parts of the valve body is detachably connected in the valve core, the lower part of the valve rod is hermetically connected with the valve seat at a position corresponding to the bottom end of the valve seat, the position corresponding to the upper part of the valve seat is elastically connected with the valve seat, and the lower end of the valve core is provided with a magnetic isolation gasket with the thickness of 0.05-0.1 mm.

2. The solenoid valve as set forth in claim 1, wherein: the upper portion of disk seat matches and is embedded to have annular first copper sheathing, first copper sheathing is established outside the valve rod and the valve rod still overlaps and is equipped with the spring outward, the both ends of spring correspond with first copper sheathing and valve rod fixed connection, the valve rod is established its outside Y type sealing washer and disk seat sealing connection through the cover.

3. The solenoid valve as set forth in claim 1, wherein: the valve comprises a valve rod, a valve core, a valve sleeve, a valve rod, a valve core, a gasket, a coil sealing ring, a valve sleeve and a second copper sleeve, wherein the valve rod is externally provided with external threads, the valve core is internally provided with internal threads, the valve rod and the valve core are detachably connected through the matching of the internal threads and the external threads, the upper end of the valve core is also provided with the gasket for magnetic isolation, the upper end and the lower end of the coil are respectively provided with the coil sealing ring.

4. The solenoid valve as set forth in claim 1, wherein: and the inner wall of the valve body is provided with a positioning pin for positioning the valve core to move.

5. The solenoid valve as set forth in claim 1, wherein: the upper ends of the valve sleeve and the valve body are located on the same plane, an annular blocking sleeve cover is arranged at the upper end of the valve sleeve, the upper end of the valve body is connected with an annular valve cover arranged at the upper end of the blocking sleeve, a valve cover sealing ring is arranged between the valve cover and the valve sleeve, and a dust cover arranged at the top end of the valve rod is covered between the blocking sleeve and the valve cover.

6. The solenoid valve as set forth in claim 1, wherein: the valve body is of a cylindrical structure with an n-shaped vertical section, the valve seat and the valve sleeve are of cylindrical structures with inverted T-shaped and T-shaped vertical sections, a step-shaped upper surface is arranged at the upper end of the valve seat, the thickness of the vertical part of the step-shaped upper surface is matched with that of the valve sleeve, and the thickness of the horizontal part is matched with that of the valve core.

7. The solenoid valve as set forth in claim 1, wherein: the diameter of the copper wire of the coil is 0.27-0.30 mm.

8. The solenoid valve as set forth in claim 1, wherein: the junction box comprises a box body, a circuit board and a socket, wherein the circuit board is electrically connected with the coil, and the socket is arranged on the box body and is electrically connected with the circuit board.

9. The solenoid valve as set forth in claim 8, wherein: the box body is also provided with an indicator light electrically connected with the circuit board.

10. The solenoid valve as set forth in claim 8, wherein: the socket is provided with a plurality of pins electrically connected with the circuit board.

Images