CN106903282A - Case lead plug flow control device before a kind of roll-casting of magnesium alloy machine - Google Patents
Case lead plug flow control device before a kind of roll-casting of magnesium alloy machine Download PDFInfo
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- CN106903282A CN106903282A CN201710234953.8A CN201710234953A CN106903282A CN 106903282 A CN106903282 A CN 106903282A CN 201710234953 A CN201710234953 A CN 201710234953A CN 106903282 A CN106903282 A CN 106903282A
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- lead plug
- connecting rod
- flow control
- hole
- head
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 24
- 238000005266 casting Methods 0.000 title claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000001447 compensatory effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
本发明提供一种镁合金铸轧机前箱铅塞控流装置，其结构包括连杆机构与可换式铅塞孔；其中连杆机构具有自适应功能，通过铅塞头的轻微摆动和连杆机构中弹簧的补偿性变形将连杆的受热变形抵消，以保证连杆的正常摆动和铅塞的精确控流。通过铅塞头和铅塞孔的锥度差，解决了连杆受热变形后，铅塞头插入时的卡死问题；所述连杆机构可自适应热变形，在铅塞头浮动功能和圆角减阻功能辅助下，确保铅塞的控流精度，解决了紧密闭合时铅塞头部轴线和铅塞孔轴线不重合问题；连杆机构在确保量程的前提下，活动间隙较小，有利于提高密封装的密封性能，有效的防止惰性气体泄露；可换式铅塞孔，可随时拆卸，便于及时对其进行清理或者更换。
The invention provides a lead plug flow control device for the front box of a magnesium alloy casting and rolling mill. The structure includes a connecting rod mechanism and a replaceable lead plug hole; The compensatory deformation of the spring in the mechanism offsets the thermal deformation of the connecting rod to ensure the normal swing of the connecting rod and the precise flow control of the lead plug. Through the taper difference between the lead plug head and the lead plug hole, the jamming problem of the lead plug head after the connecting rod is heated and deformed is solved; the connecting rod mechanism can adapt to the thermal deformation, and the floating function and rounded corners With the assistance of the drag reduction function, the flow control accuracy of the lead plug is ensured, and the problem of misalignment of the axis of the lead plug head and the axis of the lead plug hole is solved when the lead plug head axis is tightly closed; Improve the sealing performance of the sealed package and effectively prevent the leakage of inert gas; the replaceable lead plug hole can be disassembled at any time, which is convenient for cleaning or replacing it in time.
Description
技术领域technical field
本发明涉及镁合金铸轧领域，具体涉及一种镁合金铸轧机前箱铅塞控流装置。The invention relates to the field of magnesium alloy casting and rolling, in particular to a lead plug flow control device for a front box of a magnesium alloy casting and rolling machine.
技术背景technical background
镁合金前箱铅塞控流装置是镁合金铸轧生产线上的关键部件，通过其可控制前箱中镁液流入铸嘴中的流量大小，对后续镁合金铸轧板的铸轧质量和产品成材率至关重要。The magnesium alloy front box lead plug flow control device is a key component of the magnesium alloy casting and rolling production line, through which the flow of magnesium liquid in the front box into the nozzle can be controlled, and the casting and rolling quality and product quality of the subsequent magnesium alloy casting and rolling plate can be controlled. Yield is crucial.
现有的铅塞控流装置多由简单的连杆机构构成，连杆在油缸的驱动下，带动铅塞运动。在一般的常温非密闭环境中能够满足控流要求，但由于镁合金铸轧复杂的工作环境，前箱上布置空间较小的现场要求，以及镁合金自身容易氧化的材料特性，导致现有的铅塞控流装置存在如下缺点。Most of the existing lead plug flow control devices are composed of a simple connecting rod mechanism, and the connecting rod drives the lead plug to move under the drive of the oil cylinder. It can meet the flow control requirements in a general room temperature non-airtight environment, but due to the complex working environment of magnesium alloy casting and rolling, the site requirements for a small layout space on the front box, and the material characteristics of magnesium alloys that are easy to oxidize, the existing The lead plug flow control device has the following disadvantages.
一、由于镁合金的熔点高达650℃，为保证镁合金为熔融态，前箱内温度需达到650以上，在此温度下连杆和铅塞受热变形严重，导致铅塞不能正常插入控流孔，或铅塞与控流孔之间无法正常闭合。1. Since the melting point of magnesium alloy is as high as 650°C, in order to ensure that the magnesium alloy is in a molten state, the temperature inside the front box must reach above 650°C. At this temperature, the connecting rod and lead plug are severely deformed by heat, resulting in the lead plug not being able to be inserted into the flow control hole normally. , or between the lead plug and the flow control hole cannot be closed normally.
二、现有的控流装置调整时，前箱箱体上装置预留的活动间隙较大，导致前箱整体的密封困难，难以解决惰性气体的泄露问题。2. When the existing flow control device is adjusted, the activity gap reserved by the device on the front box body is relatively large, which makes it difficult to seal the front box as a whole, and it is difficult to solve the leakage problem of the inert gas.
三、由于镁液常在前箱内反应后凝固，凝固后的镁合金难以清除，同时会引入大量氧化夹杂物，会严重影响后续镁合金铸轧板的质量，且铅塞与铅塞孔之间的配合精度要求很高，故需经常对控流口更换或清理，以保证铅塞与铅塞孔的正常闭合。现有结构中控流孔和前箱为一个整体，清理时操作不便，且整体更换成本较高。3. Since the magnesium liquid often solidifies after reacting in the front box, the solidified magnesium alloy is difficult to remove, and a large amount of oxidized inclusions will be introduced at the same time, which will seriously affect the quality of the subsequent magnesium alloy cast-rolled plate, and the gap between the lead plug and the lead plug hole The precision of cooperation between them is very high, so it is necessary to replace or clean the flow control port frequently to ensure the normal closure of the lead plug and the lead plug hole. In the existing structure, the flow control hole and the front box are integrated, which is inconvenient to operate during cleaning, and the overall replacement cost is relatively high.
发明内容Contents of the invention
针对上述情况，本发明所要解决的技术问题是：高温下镁合金铸轧前箱中连杆受热伸长和铅塞头的体积膨胀，导致铅塞与控流孔无法正常闭合，现有结构中连杆的活动范围较大，导致前箱整体密封困难，难以解决惰性气体的泄漏问题；现有结构中铅塞孔和前箱为一个整体，清理时操作不便，且整体更换成本较高；现有装置的控流量程较小，难以实现铅塞和铅塞孔的完全脱离。In view of the above situation, the technical problem to be solved by the present invention is: under high temperature, the connecting rod in the magnesium alloy casting and rolling front box is heated and elongated and the volume expansion of the lead plug head causes the lead plug and the flow control hole to fail to close normally. The range of movement of the connecting rod is large, which makes it difficult to seal the front box as a whole, and it is difficult to solve the problem of leakage of inert gas; in the existing structure, the lead plug hole and the front box are integrated, which is inconvenient to clean and the overall replacement cost is high; The flow control range of existing devices is small, and it is difficult to completely disengage the lead plug and the lead plug hole.
为解决上述技术问题，本发明所采取的技术方案是：提供一种镁合金铸轧机前箱铅塞控流装置，其结构包括连杆机构与可换式铅塞孔；其中连杆机构具有自适应功能，通过铅塞头的轻微摆动和连杆机构中弹簧的补偿性变形将连杆的受热变形抵消，以保证连杆的正常摆动和铅塞的精确控流。In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is to provide a lead plug flow control device for the front box of a magnesium alloy casting and rolling mill, whose structure includes a connecting rod mechanism and a replaceable lead plug hole; Adaptive function, through the slight swing of the lead plug head and the compensatory deformation of the spring in the connecting rod mechanism, the thermal deformation of the connecting rod is offset to ensure the normal swing of the connecting rod and the precise flow control of the lead plug.
所述的连杆机构由支撑架、电动推杆、主动轴、连杆、铅塞头、上套盖、下套盖、弹簧、导向销、销轴、压下螺母和支撑销组成；其中主动轴和电动推杆分别铰接在支撑架两侧，并通过连接轴将两者进行铰连接；主动轴套装在连杆上，由主动轴上的轴孔和固定在连杆上的导向销，对除连杆轴线方向外的位移进行限制；弹簧安装在主动轴上下腔中，由连杆上的支撑销和压下螺母固定，对连杆轴线方向上的位移进行弹性约束；螺栓将上下套盖固定在主动轴的上下端。在连杆的下端，通过销轴将铅塞头连接到连杆上，且铅塞头部的锥孔和连杆之间存在间隙。The connecting rod mechanism is composed of a support frame, an electric push rod, a driving shaft, a connecting rod, a lead plug head, an upper cover, a lower cover, a spring, a guide pin, a bearing pin, a pressing nut and a support pin; The shaft and the electric push rod are respectively hinged on both sides of the support frame, and the two are hinged through the connecting shaft; the driving shaft is sleeved on the connecting rod, and the shaft hole on the driving shaft and the guide pin fixed on the connecting rod are connected The displacement except the axial direction of the connecting rod is restricted; the spring is installed in the upper and lower chambers of the driving shaft, fixed by the support pin on the connecting rod and the pressing nut, and elastically constrains the displacement in the axial direction of the connecting rod; the bolt will cover the upper and lower sleeves Fixed on the upper and lower ends of the drive shaft. At the lower end of the connecting rod, the lead plug head is connected to the connecting rod through a pin shaft, and there is a gap between the taper hole of the lead plug head and the connecting rod.
所述主动轴为中空的圆柱形结构，在主动轴的上下底中间位置处设置有圆形凹槽，形成主动轴的上下腔结构。The driving shaft is a hollow cylindrical structure, and a circular groove is arranged at the middle position of the upper and lower bottoms of the driving shaft to form the upper and lower cavity structures of the driving shaft.
所述的可换式铅塞孔包括铅塞孔，石墨密封圈，密封压紧套和端盖，其中铅塞孔安装在前箱出水口出，通过端盖和密封压紧套将石墨密封圈压靠在前箱箱体上，并通过螺钉连接将铅塞孔固定在前箱箱体上。The replaceable lead plug hole includes a lead plug hole, a graphite sealing ring, a sealing compression sleeve and an end cover, wherein the lead plug hole is installed at the water outlet of the front box, and the graphite sealing ring is sealed by the end cover and the sealing compression sleeve. Press against the front box body, and fix the lead plug hole on the front box body through screw connection.
所述铅塞孔的锥度比铅塞头的锥度大2到8度。此方案可加大铅塞头头部与铅塞孔在控流开始时的间隙，防止连杆和铅塞受热膨胀后不能正常插入，当铅塞头头部进入控流孔运行一段距离后，会与铅塞孔产生滑动接触，并通过弹簧的压紧力实现自适应功能。The taper of the lead plug hole is 2 to 8 degrees larger than the taper of the lead plug head. This scheme can increase the gap between the lead plug head and the lead plug hole at the beginning of the flow control to prevent the connecting rod and the lead plug from being inserted normally after being heated and expanded. When the lead plug head enters the flow control hole and runs for a certain distance, It will have sliding contact with the lead plug hole, and realize the self-adaptive function through the compression force of the spring.
所述铅塞头部可以轻微摆动，摆动幅度为1到5度；且铅塞头前半部分倒有圆角，有利于减小铅塞孔与铅塞头之间的摩擦，解决了在连杆受热伸长时，由弹簧抵消一部分连杆的热变形后，铅塞孔的轴线与铅塞头的轴线不重合现象，确保了铅塞孔与铅塞头间的紧密闭合。The head of the lead plug can swing slightly, with a swing range of 1 to 5 degrees; and the front half of the lead plug head has rounded corners, which is conducive to reducing the friction between the lead plug hole and the lead plug head, and solves the problem of friction between the lead plug hole and the lead plug head. When heated and elongated, after the thermal deformation of a part of the connecting rod is offset by the spring, the axis of the lead plug hole does not coincide with the axis of the lead plug head, which ensures the tight closure between the lead plug hole and the lead plug head.
所述可换式铅塞孔，在镁液凝结到一定程度后可将端盖拆除，将铅塞孔取出，及时进行更换或清理。For the replaceable lead plug hole, the end cover can be removed after the magnesium liquid condenses to a certain extent, and the lead plug hole can be taken out for replacement or cleaning in time.
本发明的有益效果是：本发明在保证控流装置控流量程的前提下，通过铅塞头和铅塞孔的锥度差，解决了连杆受热变形后，铅塞头插入时的卡死问题；所述连杆机构可自适应热变形，在铅塞头浮动功能和圆角减阻功能辅助下，确保铅塞的控流精度，解决了紧密闭合时铅塞头部轴线和铅塞孔轴线不重合问题；连杆机构在确保量程的前提下，活动间隙较小，有利于提高密封装的密封性能，有效的防止惰性气体泄露；可换式铅塞孔，可随时拆卸，便于及时对其进行清理或者更换。The beneficial effects of the present invention are: under the premise of ensuring the flow control flow of the flow control device, the present invention solves the problem of jamming when the lead plug is inserted after the connecting rod is heated and deformed through the taper difference between the lead plug head and the lead plug hole ; The connecting rod mechanism can adapt to thermal deformation, and with the assistance of the floating function of the lead plug head and the rounded drag reduction function, it can ensure the flow control accuracy of the lead plug, and solve the problem of the axis of the lead plug head and the axis of the lead plug hole when it is tightly closed. Non-overlapping problem; under the premise of ensuring the measuring range, the connecting rod mechanism has a small movable gap, which is beneficial to improve the sealing performance of the sealed package and effectively prevent the leakage of inert gas; the replaceable lead plug hole can be disassembled at any time, which is convenient for timely alignment. Clean or replace.
附图说明Description of drawings
图1是镁合金铸轧机前箱铅塞控流装置结构示意图；Fig. 1 is the schematic diagram of the structure of the lead plug flow control device in the front box of the magnesium alloy casting and rolling mill;
图2是镁合金铸轧机前箱铅塞控流装置Ⅰ处结构示意图；Fig. 2 is a schematic diagram of the structure of the front box lead plug flow control device I of the magnesium alloy casting and rolling mill;
图3是镁合金铸轧机前箱铅塞控流装置连杆机构的结构示意图；Fig. 3 is a structural schematic diagram of the connecting rod mechanism of the lead plug flow control device in the front box of the magnesium alloy casting and rolling mill;
图4是镁合金铸轧机前箱铅塞控流装置连杆与铅塞头连接的示意图；Fig. 4 is a schematic diagram of the connection between the lead plug flow control device connecting rod and the lead plug head of the front box of the magnesium alloy casting and rolling mill;
图5是镁合金铸轧机前箱铅塞控流装置Ⅱ处结构示意图；Figure 5 is a schematic diagram of the structure at II of the lead plug flow control device in the front box of the magnesium alloy casting and rolling mill;
图6是连杆结构中主动轴零件示意图；Fig. 6 is a schematic diagram of the drive shaft parts in the connecting rod structure;
图7是连杆结构中主动轴零件的俯视图；Fig. 7 is a top view of the drive shaft parts in the connecting rod structure;
图中：1、支撑架；2、电动推杆；3、主动轴；4、盖板；5、内盖；6、前箱箱体； 7、连杆；8、铅塞头；9、下套盖；10、上套盖；11、压下螺母；12、弹簧；13、导向销；14、支撑销；15、铅塞孔；16、石墨密封圈；17、密封压紧套；18、端盖；19、销轴。In the figure: 1. Support frame; 2. Electric push rod; 3. Drive shaft; 4. Cover plate; 5. Inner cover; 6. Front box body; 7. Connecting rod; 8. Lead plug head; 9. Lower Cover; 10, upper cover; 11, press nut; 12, spring; 13, guide pin; 14, support pin; 15, lead plug hole; 16, graphite sealing ring; 17, sealing compression sleeve; 18, End cover; 19, bearing pin.
具体实施方式detailed description
下面将结合附图对本发明进行说明，如图1～7所示，本发明提供一种带自适应功能的镁合金铸轧机前箱铅塞控流装置，它主要包括连杆机构和可换式铅塞孔；其中连杆机构包括支撑架1、电动推杆2、主动轴3、连杆7、铅塞头8、下套盖9、上套盖10、压下螺母11、弹簧12、导向销13及支撑销14 ；如图1～3所示，首先将下套盖9套装在，装有导向销13的连杆7上，随后将支撑销14插入连杆7的对应位置，安装弹簧12，将主动轴3套装在连杆7上，通过导向销13进行周向定位，再次安装弹簧12并由压下螺母11压紧，对连杆轴向方向的位移进行约束。最后由螺栓将下套盖9、上套盖10固定在主动轴3上，所构成的整体通过主动轴3上的轴铰接于固定在盖板4上的支撑架1上，并在电动推杆2的推动下，通过连杆7带动铅塞头8摆动。盖板4与前箱箱体6的连接位置，设置有内盖5。可换式铅塞孔包括铅塞孔15、石墨密封圈16、密封压紧套17和端盖18；如图4所示，连杆7和铅塞头8通过销轴19铰接，但转动角度有限，仅可轻微浮动；如图5所示，将铅塞孔15安装在前箱箱体6上后，通过石墨密封圈16进行密封，并由密封压紧套17和端盖18压紧固定，端盖18通过螺栓固定在前箱箱体6上，同时通过螺栓对铅塞孔15进行固定。The present invention will be described below in conjunction with the accompanying drawings. As shown in FIGS. Lead plug hole; wherein the connecting rod mechanism includes a support frame 1, an electric push rod 2, a drive shaft 3, a connecting rod 7, a lead plug head 8, a lower cover 9, an upper cover 10, a pressing nut 11, a spring 12, a guide Pin 13 and support pin 14; As shown in Figures 1 to 3, at first the lower cover 9 is set on the connecting rod 7 on which the guide pin 13 is housed, then the supporting pin 14 is inserted into the corresponding position of the connecting rod 7, and the spring is installed 12. Set the driving shaft 3 on the connecting rod 7, and perform circumferential positioning through the guide pin 13, install the spring 12 again and compress it with the nut 11 to constrain the displacement of the connecting rod in the axial direction. Finally, the lower sleeve cover 9 and the upper sleeve cover 10 are fixed on the driving shaft 3 by bolts, and the whole formed is hinged on the support frame 1 fixed on the cover plate 4 through the shaft on the driving shaft 3, and is connected to the electric push rod. Under the promotion of 2, lead plug head 8 is driven to swing by connecting rod 7. The connection position between the cover plate 4 and the front box body 6 is provided with an inner cover 5 . The replaceable lead plug hole includes lead plug hole 15, graphite sealing ring 16, sealing compression sleeve 17 and end cap 18; as shown in Figure 4, connecting rod 7 and lead plug head 8 are hinged by pin 19, but the rotation angle limited, and can only float slightly; as shown in Figure 5, after the lead plug hole 15 is installed on the front box body 6, it is sealed by a graphite sealing ring 16, and is compressed and fixed by a sealing compression sleeve 17 and an end cover 18 , the end cover 18 is fixed on the front box casing 6 by bolts, and the lead plug hole 15 is fixed by bolts simultaneously.
如图6、7所示，主动轴为中空的圆柱形结构，在主动轴的上下底中间位置处设置有圆形凹槽，形成主动轴的上下腔结构，用于设置弹簧。As shown in Figures 6 and 7, the driving shaft is a hollow cylindrical structure, and a circular groove is arranged at the middle position of the upper and lower bottoms of the driving shaft to form the upper and lower cavity structures of the driving shaft for setting the spring.
具体工作过程中：在铸轧开始时通过压下螺母11调整弹簧12的伸缩量，使铅塞头8和铅塞孔15正常闭合，通过转液泵向前箱箱体6内输送镁液，液面达到一定高度后，在电动推杆2的作用下，由主动轴3带动连杆7摆动，使铅塞头8和铅塞孔15之间保持一定开口度。工作一段时间后，连杆7和铅塞头8会发生受热变形，铅塞头8和铅塞孔15之间的定开口度会发生一定变化，通过流量监测装置监测出口流量，将流量信号反馈给控制系统，根据控制系统发出的信号，电工推杆2带动连杆7进行动态调整。During the specific working process: at the beginning of casting and rolling, the expansion and contraction of the spring 12 is adjusted by pressing down the nut 11, so that the lead plug head 8 and the lead plug hole 15 are normally closed, and the magnesium liquid is delivered to the front box body 6 through the liquid transfer pump, After the liquid level reaches a certain height, under the action of the electric push rod 2, the drive shaft 3 drives the connecting rod 7 to swing, so that a certain opening is maintained between the lead plug head 8 and the lead plug hole 15. After working for a period of time, the connecting rod 7 and the lead plug head 8 will be heated and deformed, and the fixed opening between the lead plug head 8 and the lead plug hole 15 will change to a certain extent. The outlet flow is monitored by the flow monitoring device, and the flow signal is fed back. To the control system, according to the signal sent by the control system, the electrician push rod 2 drives the connecting rod 7 to perform dynamic adjustment.
根据现场工况，在需要停产检修和设备维护时，需要使铅塞头8和铅塞孔15处于完全闭合状态，但此时连杆7和铅塞头8已发生受热变形，如连杆系统无自适应能力，无法满足要求，得益于本发明可将连杆7的热伸长量通过弹簧12的压缩量抵消，并且铅塞头8头部可轻微摆动，且具有一定的弧度，保证了铅塞头8和铅塞孔15的正常闭合。同时，在铅塞头8和铅塞孔15完全脱离，且连杆7和铅塞头8已受热变形的工作环境下，由于铅塞孔15锥度大于铅塞头8的锥度，保证了铅塞头的正常插入。According to the on-site working conditions, when it is necessary to stop production for maintenance and equipment maintenance, the lead plug head 8 and the lead plug hole 15 need to be in a completely closed state, but at this time the connecting rod 7 and the lead plug head 8 have been thermally deformed, such as the connecting rod system No self-adaptive ability, unable to meet the requirements, thanks to the invention, the thermal elongation of the connecting rod 7 can be offset by the compression of the spring 12, and the head of the lead plug 8 can swing slightly, and has a certain arc, ensuring The normal closure of the lead plug head 8 and the lead plug hole 15 is ensured. At the same time, under the working environment where the lead plug head 8 and the lead plug hole 15 are completely separated, and the connecting rod 7 and the lead plug head 8 have been heated and deformed, since the taper of the lead plug hole 15 is larger than the taper of the lead plug head 8, the lead plug normal insertion of the head.
对本发明中的技术方案进行清楚、完整地描述，基于本发明中的方案，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它方案，都属于本发明保护的范围。The technical solutions in the present invention are clearly and completely described. Based on the solutions in the present invention, all other solutions obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
Claims (4)
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