Fixed fixtures

Abstract

This utility model relates to the field of valve technology and discloses a fixing fixture, including a valve body and a fixing structure. The valve body has a valve cavity and a connecting portion communicating with the valve cavity. The valve body also has a first mounting portion and a second mounting portion communicating with the valve cavity. A first sealing element and a second sealing element are suitable for installation between the first mounting portion and the second mounting portion. The fixing structure includes a swivel assembly and a pressing element. The pressing element is suitable for being disposed between the first mounting portion and the second mounting portion through the connecting portion. The swivel assembly is disposed on the valve body, and the output end of the swivel assembly is suitable for being connected to the pressing element through the connecting portion. Under the action of external force, the output end of the swivel assembly is suitable for driving the pressing element to move away from the connecting portion to press the first sealing element and the second sealing element. The valve body also has a fluid channel communicating with the valve cavity, and the pressing element has a through portion communicating with the fluid channel. This utility model is beneficial for improving the welding efficiency of each sealing element.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to fixed tooling. Background Technology

[0002] A wedge gate valve uses a wedge-shaped gate to open and close a pipeline. When closed, the axial pressure of the valve stem forces the wedge gate between two inclined sealing seats on the valve body, generating a very high sealing pressure based on the wedge principle, achieving a forced seal. When open, the gate is lifted, completely separating it from the medium flow channel, resulting in minimal flow resistance, almost zero. The "wedge" in its name vividly describes its working principle of achieving a seal through inclined plane compression.

[0003] Currently, the valve body and sealing seat of a wedge gate valve form one side of the valve's seal. To accommodate different flowing media and to achieve higher wear resistance, corrosion resistance, and high hardness on the valve body sealing surface, the valve body and sealing seat are typically designed as separate units. This separate structure involves welding various special materials onto the sealing surface of the sealing seat, and finally welding the welded special material seat ring to the valve body to improve the overall sealing performance and service life of the valve.

[0004] However, the welding between the valve body and the sealing seat of a wedge gate valve is usually achieved by manual spot welding or by hammering the corresponding wedge gate plate. The welding efficiency of the above two methods is not high, and the sealing surface of the sealing seat is easily damaged during the welding process between the sealing seat and the valve body, which affects the sealing. Utility Model Content

[0005] In view of this, the present invention provides a fixing fixture to solve the problems of low efficiency and easy damage to the sealing surface of the sealing seat during the current welding process between the sealing seat and the valve body.

[0006] In a first aspect, this utility model provides a fixing fixture, comprising: The valve body has a valve cavity and a communicating portion that communicates with the valve cavity. The valve body also has a first mounting portion and a second mounting portion that communicate with the valve cavity. A first sealing element and a second sealing element are adapted to be installed between the first mounting portion and the second mounting portion. A fixed structure includes a swivel assembly and an extruder, the extruder being adapted to be disposed between a first mounting portion and a second mounting portion via the connecting portion, the swivel assembly being disposed on the valve body, and the output end of the swivel assembly being adapted to be connected to the extruder via the connecting portion; Under the action of external force, the output end of the rotary assembly is adapted to drive the extruder to move away from the connecting part, so as to extrude the first seal and the second seal through the extruder, and make the first seal and the second seal abut against the valve body respectively; The valve body also has a fluid channel communicating with the valve cavity, and the extrusion part has a through portion communicating with the fluid channel so that external welding parts can pass through.

[0007] Beneficial effects: The extruder is driven to move away from the connecting part by the output end of the swivel assembly, so that the extruder can extrude the first seal and the second seal respectively installed in the first mounting part and the second mounting part, so that the first seal and the second seal can be installed in place. In addition, the through part opened on the extruder allows the external welding parts to weld the first seal in the fluid channel and weld the second seal in the through part, which helps to improve the welding efficiency of each seal.

[0008] In one optional embodiment, the fixing structure further includes a shielding component, which includes a first shielding member and a second shielding member, both of which are disposed between the first mounting portion and the second mounting portion. The first shielding member is disposed between the first seal and the extrusion member, and the first shielding member is adapted to cover the first seal. The second shielding member is disposed between the second seal and the extrusion member, and the second shielding member is adapted to cover the second seal.

[0009] Beneficial effects: The fixed structure also includes a shielding component, which specifically includes a first shielding member and a second shielding member. In this embodiment, the first shielding member and the second shielding member are respectively a first shielding ring and a second shielding ring. Both the first shielding member and the second shielding member are disposed between the first mounting part and the second mounting part. Specifically, the first shielding member is disposed between the first seal and the extrusion member, and the first shielding member can cover the first seal. The second shielding member is specifically disposed between the second seal and the extrusion member, and the second shielding member can cover the second seal. Thus, when external welding components weld the seals, the first shielding member and the second shielding member can shield the sealing surfaces of the first and second seals, thereby preventing weld beads generated during the welding process from splashing onto the sealing surfaces, and thus preventing damage to the sealing surfaces of the first and second seals, ensuring the sealing performance of each seal.

[0010] In one optional embodiment, the first seal has a first mounting surface and a first sealing surface that are interconnected; the first shielding member has a first shielding portion, the first shielding portion having a first abutting surface and a first shielding surface that are interconnected, the first abutting surface being adapted to abut against the first mounting surface, and the first shielding surface being adapted to abut against the first sealing surface.

[0011] Beneficial effects: By providing a first sealing member with a first mounting surface and a first sealing surface that are interconnected, and a first shielding portion provided on the first shielding member, the first shielding portion in this embodiment is a first shielding groove. The first shielding portion has a first abutting surface and a first shielding surface that are interconnected, so that when the first shielding member is provided between the first sealing member and the extruder, the first sealing member can be inserted into the first shielding portion, and the first abutting surface can abut against the first mounting surface, and the first shielding surface can abut against the first sealing surface. In this way, the connection stability between the first sealing member and the first shielding member can be guaranteed, and the first sealing surface can also be shielded by the first shielding surface to avoid damage to the first sealing surface.

[0012] In one optional embodiment, the second seal has a second mounting surface and a second sealing surface that are interconnected; the second shielding member has a second shielding portion, the second shielding portion having a second abutting surface and a second shielding surface that are interconnected, the second abutting surface being adapted to abut against the second mounting surface, and the second shielding surface being adapted to abut against the second sealing surface.

[0013] Beneficial effects: By providing a second sealing member with a second mounting surface and a second sealing surface that are interconnected, and a second shielding portion provided on the second shielding member, the second shielding portion in this embodiment is a second shielding groove. The second shielding portion has a second abutting surface and a second shielding surface that are interconnected, so that when the second shielding member is provided between the second sealing member and the extruder, the second sealing member can be inserted into the second shielding portion, and the second abutting surface can abut against the second mounting surface, and the second shielding surface can abut against the second sealing surface. In this way, the connection stability between the second sealing member and the second shielding member can be guaranteed, and the second sealing surface can also be shielded by the second shielding surface to avoid damage to the second sealing surface.

[0014] In one optional embodiment, the first shielding member and the second shielding member are respectively provided with a first clearance portion and a second clearance portion that are connected to the through portion.

[0015] Beneficial effects: By providing a first clearance portion on the first shielding member and a second clearance portion on the second shielding member, the first clearance portion and the second clearance portion in this embodiment are respectively a first clearance hole and a second clearance hole. Both the first clearance portion and the second clearance portion are connected to the through portion. Since the first shielding member and the second shielding member are respectively provided on both sides of the extrusion member, the existence of the first clearance portion and the second clearance portion can connect the through portion and the fluid channel, ensuring that the external welding parts can be welded normally.

[0016] In one alternative embodiment, the swivel assembly includes a swivel member, one end of which is adapted to be connected to the extruder through the connecting portion. Under the action of an external force, the swivel member is adapted to drive the extruder to move away from the connecting portion, so that the extruder extrudes the first seal and the second seal.

[0017] Beneficial effects: By setting the swivel assembly including a swivel member, which in this embodiment is a swivel rod, one end of the swivel member can extend into the valve cavity through the connecting part and connect with the extrusion member. Thus, under the action of external force, the swivel member can drive the extrusion member to move away from the connecting part, thereby enabling the extrusion member to squeeze the first seal and the second seal into the first mounting part and the second mounting part, respectively.

[0018] In one alternative embodiment, the swivel assembly further includes a fixing member and an adapter member. The fixing member is adapted to cover the connecting portion disposed on the valve body. One end of the adapter member is connected to the pressing member. The end of the swivel assembly is adapted to pass through the fixing member and abut against the other end of the adapter member. The swivel assembly and the fixing member are threadedly rotatably connected.

[0019] Beneficial effects: By setting the swivel assembly, a fixing member and an adapter are included. In this embodiment, the fixing member and the adapter are a fixing plate and an adapter rod, respectively. The fixing member can cover the connecting part and is set on the valve body. One end of the adapter is connected to the extrusion member. The end of the swivel assembly can pass through the fixing member and connect to the other end of the adapter. The swivel assembly and the fixing member are connected by a threaded rotation. In this way, under the action of external force, the swivel assembly can rotate relative to the fixing member and transmit the external force to the adapter through the connection between the fixing member and the valve body. The adapter can then transmit the external force to the extrusion member, so that the extrusion member can move away from the connecting part and extrude the first and second sealing members.

[0020] In one alternative embodiment, the swivel assembly further includes a grip disposed at one end of the swivel assembly remote from the adapter.

[0021] Beneficial effects: By setting the swivel assembly, a gripping component is also included. In this embodiment, the gripping component is a gripping rod. The gripping component is specifically set at the end of the swivel assembly away from the adapter. The gripping component can receive external force and transmit the external force to the swivel assembly to facilitate the application of external force.

[0022] In one optional embodiment, a guide is provided on the inner wall of the valve cavity, and a guide portion is provided on the side wall of the extruder. When the extruder is disposed in the valve cavity through the connecting portion, the guide portion is adapted to engage with the guide.

[0023] Beneficial effects: With the guide member set on the inner wall of the valve cavity and the guide part opened on the side wall of the extruder, the guide member is a guide boss in this embodiment and the guide part is a guide groove in this embodiment. In this way, when the extruder is set in the valve cavity through the connecting part, the guide part can engage with the guide member. Thus, when the extruder moves in a direction away from the connecting part, the extruder can be guided by the guide member and the guide part, avoiding the extruder from being misaligned and causing the through part to be misaligned, which would affect the welding of the external welding parts and help ensure that the welding can be completed smoothly.

[0024] In one alternative embodiment, the extrusion member has a tapered cross-sectional shape, and any of the shielding members has a T-shaped cross-sectional shape.

[0025] Beneficial effects: By setting the cross-sectional shape of the extruder to be conical and the cross-sectional shape of each shielding member to be T-shaped, the extruder with the conical cross-sectional shape can extrude the first and second sealing members on both sides when it moves in a direction away from the connecting part, and the cross-sectional shape of the shielding member is set to T-shaped so that the end of the shielding member can have an abutment surface and a shielding surface. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a plan view of a fixing fixture according to an embodiment of the present utility model; Figure 2 This is a cross-sectional schematic diagram of a fixing fixture according to an embodiment of the present utility model.

[0028] Explanation of reference numerals in the attached figures: 1-Valve body; 11-Guide element; 2-First seal; 3-Second seal; 4-Fixed structure; 41-Spinning assembly; 411-Spinning part; 412-Fixed part; 413-Adapter part; 414-Holding part; 42-Extrusion part; 421-Through part; 422-Guide part; 431-First shielding part; 4311-First clearance part; 432-Second shielding part; 4321-Second clearance part. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The following is combined with Figure 1 and Figure 2 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, on one hand, a fixing fixture is provided, such as... Figure 1 and Figure 2 As shown, the device includes a valve body 1 and a fixing structure 4. The valve body 1 has a valve cavity and a connecting portion communicating with the valve cavity. The valve body 1 also has a first mounting portion and a second mounting portion communicating with the valve cavity. A first sealing element 2 and a second sealing element 3 are suitable for installation between the first mounting portion and the second mounting portion. The fixing structure 4 includes a swivel assembly 41 and a pressing element 42. The pressing element 42 is suitable for being disposed between the first mounting portion and the second mounting portion through the connecting portion. The swivel assembly 41 is disposed on the valve body 1, and the output end of the swivel assembly 41 is suitable for being connected to the pressing element 42 through the connecting portion. Under the action of external force, the output end of the swivel assembly 41 is suitable for driving the pressing element 42 to move away from the connecting portion, so as to press the first sealing element 2 and the second sealing element 3 through the pressing element 42, and make the first sealing element 2 and the second sealing element 3 abut against the valve body 1 respectively. The valve body 1 also has a fluid channel communicating with the valve cavity. The pressing element 42 has a through portion 421 communicating with the fluid channel for external welding parts to pass through.

[0032] The aforementioned fixture is fixed by a fixing structure 4 on the valve body 1. The valve body 1 has a valve cavity and a communicating part that communicates with the valve cavity. In this embodiment, the communicating part is a communicating hole. The communicating part is used to provide space for installing external objects into the valve cavity. The valve body 1 also has a first mounting part and a second mounting part that communicate with the valve cavity. In this embodiment, the first mounting part and the second mounting part are respectively a first mounting groove and a second mounting groove. The first mounting part and the second mounting part can respectively install a first sealing element 2 and a second sealing element 3. In this embodiment, the first sealing element 2 and the second sealing element 3 are respectively a first sealing seat and a second sealing seat. The first sealing element 2 and the second sealing element 3 are used to abut against the two sides of the gate to achieve sealing of the valve body 1.

[0033] The fixed structure 4 includes a swivel assembly 41 and an extruder 42. In this embodiment, the extruder 42 is an extrusion plate. The extruder 42 can be disposed between the first mounting part and the second mounting part through a connecting part, and both sides of the extruder 42 can abut against the first seal 2 and the second seal 3 disposed in the first mounting part and the second mounting part, respectively. The swivel assembly 41 is disposed on the valve body 1, and the output end of the swivel assembly 41 can be connected to the extruder 42 through the connecting part. Thus, under the action of external force, the output end of the swivel assembly 41 can drive the extruder 42 to move away from the connecting part, so that the extruder 42 can extrude the first seal 2 and the second seal 3, and allow the first seal 2 and the second seal 3 to be installed in place and abut against the valve body 1, thereby facilitating subsequent welding.

[0034] In addition, the valve body 1 also has a fluid channel that communicates with the valve cavity, and the extrusion member 42 has a through portion 421 that communicates with the fluid channel. In this embodiment, the through portion 421 is a through hole. Thus, when the first seal 2 and the second seal 3 respectively abut against the valve body 1, the external welding parts can weld the first seal 2 and the valve body 1 in the fluid channel, and weld the second seal 3 and the valve body 1 in the through portion 421. This avoids the need for the external welding parts to weld the first seal 2 and the second seal 3 in the fluid channel from both ends in sequence. This is beneficial to improving the installation efficiency and welding efficiency of each seal.

[0035] In summary, by driving the extruder 42 to move away from the connecting portion through the output end of the swivel assembly 41, the extruder 42 can extrude the first seal 2 and the second seal 3 respectively installed in the first mounting portion and the second mounting portion, so that the first seal 2 and the second seal 3 can be installed in place. In addition, through the through portion 421 opened on the extruder 42, external welding parts can be welded to the first seal 2 in the fluid channel and to the second seal 3 in the through portion 421, which helps to improve the welding efficiency of each seal.

[0036] In one embodiment, such as Figure 1 As shown, the fixing structure 4 also includes a shielding assembly, which includes a first shielding member 431 and a second shielding member 432. Both the first shielding member 431 and the second shielding member 432 are disposed between the first mounting portion and the second mounting portion. The first shielding member 431 is disposed between the first sealing member 2 and the extrusion member 42, and the first shielding member 431 is adapted to cover the first sealing member 2. The second shielding member 432 is disposed between the second sealing member 3 and the extrusion member 42, and the second shielding member 432 is adapted to cover the second sealing member 3.

[0037] The fixing fixture described above, through the setting of fixing structure 4, also includes a shielding component. The shielding component specifically includes a first shielding member 431 and a second shielding member 432. In this embodiment, the first shielding member 431 and the second shielding member 432 are respectively a first shielding ring and a second shielding ring. Both the first shielding member 431 and the second shielding member 432 are disposed between the first mounting part and the second mounting part. Specifically, the first shielding member 431 is disposed between the first sealing member 2 and the extrusion member 42, and the first shielding member 431 can cover the first sealing member 2. The second shielding member 432 is specifically disposed between the second sealing member 3 and the extrusion member 42, and the second shielding member 432 can cover the second sealing member 3. In this way, when external welding parts are used to weld the sealing members, the first shielding member 431 and the second shielding member 432 can shield the sealing surfaces of the first sealing member 2 and the second sealing member 3, thereby preventing the welding beads generated during the welding process from splashing onto the sealing surfaces, and thus preventing damage to the sealing surfaces of the first sealing member 2 and the second sealing member 3, ensuring the sealing performance of each sealing member.

[0038] In one embodiment, such as Figure 1 As shown, the first sealing member 2 has a first mounting surface and a first sealing surface that are connected to each other; the first shielding member 431 has a first shielding part, which has a first abutting surface and a first shielding surface that are connected to each other. The first abutting surface is adapted to abut against the first mounting surface, and the first shielding surface is adapted to abut against the first sealing surface.

[0039] The above-described fixture, by providing a first sealing member 2 with a first mounting surface and a first sealing surface that are interconnected, and a first shielding portion provided on the first shielding member 431, wherein the first shielding portion is a first shielding groove in this embodiment, the first shielding portion has a first abutting surface and a first shielding surface that are interconnected, so that when the first shielding member 431 is provided between the first sealing member 2 and the extruder 42, the first sealing member 2 can be inserted into the first shielding portion, and the first abutting surface can abut against the first mounting surface, and the first shielding surface can abut against the first sealing surface. In this way, the connection stability between the first sealing member 2 and the first shielding member 431 can be guaranteed, and the first sealing surface can also be shielded by the first shielding surface to avoid damage to the first sealing surface.

[0040] In one embodiment, such as Figure 1 As shown, the second sealing member 3 has a second mounting surface and a second sealing surface that are connected to each other; the second shielding member 432 has a second shielding part, which has a second abutting surface and a second shielding surface that are connected to each other. The second abutting surface is adapted to abut against the second mounting surface, and the second shielding surface is adapted to abut against the second sealing surface.

[0041] The above-described fixture, by providing a second sealing member 3 with a second mounting surface and a second sealing surface that are interconnected, and a second shielding portion provided on the second shielding member 432, wherein the second shielding portion is a second shielding groove in this embodiment, the second shielding portion has a second abutting surface and a second shielding surface that are interconnected, so that when the second shielding member 432 is provided between the second sealing member 3 and the extruder 42, the second sealing member 3 can be inserted into the second shielding portion, and the second abutting surface can abut against the second mounting surface, and the second shielding surface can abut against the second sealing surface. In this way, the connection stability between the second sealing member 3 and the second shielding member 432 can be guaranteed, and the second sealing surface can also be shielded by the second shielding surface to avoid damage to the second sealing surface.

[0042] In one embodiment, such as Figure 1 As shown, the first shielding member 431 and the second shielding member 432 are respectively provided with a first clearance portion 4311 and a second clearance portion 4321 that are connected to the through portion 421.

[0043] The fixing fixture of the above structure has a first clearance portion 4311 on the first shielding member 431 and a second clearance portion 4321 on the second shielding member 432. In this embodiment, the first clearance portion 4311 and the second clearance portion 4321 are respectively the first clearance hole and the second clearance hole. Both the first clearance portion 4311 and the second clearance portion 4321 are connected to the through portion 421. Since the first shielding member 431 and the second shielding member 432 are respectively provided on both sides of the extrusion member 42, the presence of the first clearance portion 4311 and the second clearance portion 4321 can connect the through portion 421 and the fluid channel, ensuring that the external welding parts can be welded normally.

[0044] In one embodiment, such as Figure 1 As shown, the swivel assembly 41 includes a swivel member 411, one end of which is adapted to be connected to the extruder 42 through a connecting portion. Under the action of an external force, the swivel member 411 is adapted to drive the extruder 42 to move away from the connecting portion, so that the extruder 42 extrudes the first seal 2 and the second seal 3.

[0045] The fixing fixture of the above structure includes a top assembly 41, which includes a top member 411. In this embodiment, the top member 411 is a top rod. One end of the top member 411 can extend into the valve cavity through the connecting part and connect with the extruder 42. Thus, under the action of external force, the top member 411 can drive the extruder 42 to move away from the connecting part, thereby enabling the extruder 42 to squeeze the first seal 2 and the second seal 3 into the first mounting part and the second mounting part, respectively.

[0046] In one embodiment, such as Figure 1 As shown, the swivel assembly 41 also includes a fixing member 412 and an adapter member 413. The fixing member 412 is adapted to cover the connecting part disposed on the valve body 1. One end of the adapter member 413 is connected to the pressing member 42. The end of the swivel member 411 is adapted to pass through the fixing member 412 and abut against the other end of the adapter member 413. The swivel member 411 and the fixing member 412 are threadedly rotatably connected.

[0047] The aforementioned fixture, through the setting of the swivel assembly 41, also includes a fixing member 412 and an adapter 413. In this embodiment, the fixing member 412 and the adapter 413 are a fixing plate and an adapter rod, respectively. The fixing member 412 can cover the connecting part and is set on the valve body 1, while one end of the adapter 413 is connected to the pressing member 42. The end of the swivel assembly 411 can pass through the fixing member 412 and connect to the other end of the adapter 413. The swivel assembly 411 and the fixing member 412 are connected by a threaded rotation. Thus, under the action of external force, the swivel assembly 411 can rotate relative to the fixing member 412 and transmit the external force to the adapter 413 through the connection between the fixing member 412 and the valve body 1. The adapter 413 can then transmit the external force to the pressing member 42, allowing the pressing member 42 to move away from the connecting part and press the first sealing member 2 and the second sealing member 3.

[0048] In one embodiment, such as Figure 1 As shown, the swivel assembly 41 also includes a grip 414, which is disposed at the end of the swivel assembly 411 away from the adapter 413.

[0049] The fixed fixture with the above structure also includes a gripping member 414 by setting the rotating assembly 41. In this embodiment, the gripping member 414 is a gripping rod. The gripping member 414 is specifically set at the end of the rotating assembly 411 away from the adapter 413. The gripping member 414 can receive external force and transmit the external force to the rotating assembly 411 to facilitate the application of external force.

[0050] In one embodiment, such as Figure 2 As shown, a guide 11 is provided on the inner wall of the valve cavity, and a guide portion 422 is provided on the side wall of the extruder 42. When the extruder 42 is placed in the valve cavity through the connecting portion, the guide portion 422 is adapted to engage with the guide 11.

[0051] The fixing fixture described above uses a guide 11 provided on the inner wall of the valve cavity and a guide portion 422 provided on the side wall of the extruder 42. In this embodiment, the guide 11 is a guide boss and the guide portion 422 is a guide groove. Thus, when the extruder 42 is placed in the valve cavity through the connecting portion, the guide portion 422 can engage with the guide 11. As the extruder 42 moves away from the connecting portion, it can be guided by the guide 11 and the guide portion 422, preventing the extruder 42 from being misaligned and causing the through portion 421 to be misaligned, which would affect the welding of the external welding parts and help ensure that the welding can be completed smoothly.

[0052] In one embodiment, such as Figure 1 As shown, the cross-sectional shape of the extrusion part 42 is conical, and the cross-sectional shape of any shielding part is T-shaped.

[0053] The above-described fixture has a conical cross-sectional shape for the extruder 42 and a T-shaped cross-sectional shape for each shielding member. When the conical extruder 42 moves away from the connecting portion, it can extrude the first sealing member 2 and the second sealing member 3 located on both sides. The T-shaped cross-sectional shape of the shielding member allows the ends of the shielding member to have both an abutment surface and a shielding surface.

[0054] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A fixed tooling, characterized in that, include: The valve body (1) has a valve cavity and a communicating part that communicates with the valve cavity. The valve body (1) is also provided with a first mounting part and a second mounting part that communicate with the valve cavity. A first sealing element (2) and a second sealing element (3) are adapted to be installed between the first mounting part and the second mounting part. The fixed structure (4) includes a top assembly (41) and an extruder (42). The extruder (42) is adapted to be disposed between the first mounting part and the second mounting part through the connecting part. The top assembly (41) is disposed on the valve body (1), and the output end of the top assembly (41) is adapted to be connected to the extruder (42) through the connecting part. Under the action of external force, the output end of the swivel assembly (41) is adapted to drive the extruder (42) to move away from the connecting part, so as to extrude the first seal (2) and the second seal (3) through the extruder (42), and make the first seal (2) and the second seal (3) abut against the valve body (1) respectively; The valve body (1) also has a fluid channel that communicates with the valve cavity, and the extrusion member (42) has a through part (421) that communicates with the fluid channel so that external welding parts can pass through.

2. The fixing fixture according to claim 1, characterized in that, The fixing structure (4) further includes a shielding component, which includes a first shielding member (431) and a second shielding member (432), both of which are disposed between the first mounting part and the second mounting part; The first shielding member (431) is disposed between the first sealing member (2) and the extrusion member (42), and the first shielding member (431) is adapted to cover the first sealing member (2). The second shielding member (432) is disposed between the second sealing member (3) and the extrusion member (42), and the second shielding member (432) is adapted to cover the second sealing member (3).

3. The fixing fixture according to claim 2, characterized in that, The first sealing member (2) has a first mounting surface and a first sealing surface that are connected to each other; the first shielding member (431) has a first shielding part, the first shielding part has a first abutting surface and a first shielding surface that are connected to each other, the first abutting surface is adapted to abut against the first mounting surface, and the first shielding surface is adapted to abut against the first sealing surface.

4. The fixing fixture according to claim 3, characterized in that, The second sealing member (3) has a second mounting surface and a second sealing surface that are connected to each other; the second shielding member (432) has a second shielding part, the second shielding part has a second abutting surface and a second shielding surface that are connected to each other, the second abutting surface is adapted to abut against the second mounting surface, and the second shielding surface is adapted to abut against the second sealing surface.

5. The fixing fixture according to claim 4, characterized in that, The first shielding member (431) and the second shielding member (432) are respectively provided with a first clearance portion (4311) and a second clearance portion (4321) that are connected to the through portion (421).

6. The fixture according to any one of claims 1-5, characterized in that, The swivel assembly (41) includes a swivel member (411), one end of which is adapted to be connected to the extruder (42) through the connecting portion. Under the action of an external force, the swivel member (411) is adapted to drive the extruder (42) to move away from the connecting portion so that the extruder (42) extrudes the first seal (2) and the second seal (3).

7. The fixing fixture according to claim 6, characterized in that, The swivel assembly (41) further includes a fixing member (412) and an adapter (413). The fixing member (412) is adapted to cover the connecting portion disposed on the valve body (1). One end of the adapter (413) is connected to the extrusion member (42). The end of the swivel assembly (411) is adapted to pass through the fixing member (412) and abut against the other end of the adapter (413). The swivel assembly (411) and the fixing member (412) are threadedly rotatably connected.

8. The fixed tooling according to claim 7, characterized in that, The swivel assembly (41) also includes a grip (414) disposed at the end of the swivel assembly (411) away from the adapter (413).

9. The fixed tooling according to claim 1, characterized in that, A guide (11) is provided on the inner wall of the valve cavity, and a guide (422) is provided on the side wall of the extrusion member (42). When the extrusion member (42) is placed in the valve cavity through the connecting part, the guide (422) is adapted to engage with the guide (11).

10. The fixing fixture according to claim 5, characterized in that, The cross-sectional shape of the extrusion member (42) is conical, and the cross-sectional shape of any of the shielding members is T-shaped.

Images