A polymer valve seat mounting device for a diaphragm assembly

Abstract

This invention discloses a polymer valve seat mounting device for a diaphragm assembly, comprising: a stamping machine with a stamping groove on the lower end face of a stamping rod; and a pressing clamp located below the stamping rod, on which a diaphragm assembly is pressed. The top of the diaphragm assembly has a mounting groove, and a valve seat is placed within the mounting groove. The inner wall of the stamping groove is pressed against the outer edge of the mounting groove, causing the outer edge to bend towards the valve seat, forming a bent pressing portion for pressing the valve seat into the mounting groove. The stamping rod of this device presses downwards against the outer edge of the mounting groove, causing plastic deformation of the outer edge towards the valve seat, forming a bent pressing portion, which then presses the valve seat into the mounting groove. With this mounting method, the sealing surface of the valve seat does not contact other mounting fixtures, thus not affecting the sealing effect. Furthermore, this mounting method allows for efficient assembly of the valve seat and ensures installation quality.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more specifically to a polymer valve seat mounting device for a diaphragm assembly. Background Technology

[0002] In the semiconductor industry, flow control components such as diaphragm valves and pressure reducing valves control the flow of media by the contact and compression between the sealing surface 1001 of the valve seat 100 and the metal surface 200. Previously, the valve seat 100 was installed by directly stamping the sealing surface 1001 of the valve seat 100 onto the diaphragm assembly 300 using a stamping machine. However, this installation method causes unnecessary damage to the sealing surface 1001, which in turn affects the sealing performance and service life of the valve seat.

[0003] Therefore, how to provide a polymer valve seat mounting device for diaphragm components that does not damage the sealing surface of the valve seat and ensures its service life is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a polymer valve seat mounting device for diaphragm components that does not damage the sealing surface of the valve seat and ensures service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A polymer valve seat mounting device for a diaphragm assembly includes:

[0007] A stamping machine, wherein a stamping groove is provided on the lower end face of the stamping rod on the stamping machine;

[0008] A press-fitting clamp is located below the stamping rod. A diaphragm assembly is press-fitted onto the press-fitting clamp. An installation groove is provided on the top of the diaphragm assembly. A valve seat is placed in the installation groove. The inner wall of the stamping groove is pressed against the outer groove edge of the installation groove, so that the outer groove edge bends towards the valve seat to form a bent press-fitting part for pressing the valve seat into the installation groove.

[0009] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a polymer valve seat mounting device for diaphragm components. In use, the diaphragm component is fixed by a pressing clamp, and then the punching rod of a stamping machine punches downwards along the outer edge of the mounting groove, causing plastic deformation of the outer groove towards the valve seat, forming a bent pressing part. This bent pressing part is then used to press the valve seat into the mounting groove. With this mounting method, the sealing surface of the valve seat does not contact other mounting fixtures, thus not affecting the sealing effect. Furthermore, this mounting method allows for efficient assembly of the valve seat and ensures installation quality.

[0010] Furthermore, the pressing clamping table includes two clamping plates that can be opened and closed, the diaphragm assembly is clamped between the two clamping plates, and clamping seats are fixed on the bottom end surfaces of the two clamping plates. The two clamping seats are locked and fixed by fasteners after being engaged.

[0011] The beneficial effects of adopting the above technical solution are: the use of an openable clamping plate can achieve quick clamping and fixing of the diaphragm assembly, and the operation is simple.

[0012] Furthermore, each of the two clamping plates has a receiving groove on one side for accommodating the diaphragm assembly.

[0013] Furthermore, the diaphragm assembly includes: a valve seat mounting column, a diaphragm mounting column, a diaphragm, and a fixing screw. The valve seat mounting column has a mounting groove at its top end, and the bottom end of the valve seat mounting column is integrally connected to the top end of the diaphragm mounting column. The diaphragm is pressed onto the bottom end of the diaphragm mounting column by the fixing screw.

[0014] The receiving groove includes: a diaphragm mounting column receiving groove, a diaphragm receiving groove, and a fixing screw receiving groove arranged vertically; the diaphragm mounting column is placed in the diaphragm mounting column receiving groove, the diaphragm is placed in the diaphragm receiving groove, and the fixing screw is placed in the fixing screw receiving groove.

[0015] The bottom surface of the valve seat mounting column abuts against the top surface of the clamping plate.

[0016] The beneficial effect of adopting the above technical solution is that when the two clamping plates are aligned, the diaphragm assembly can be clamped and limited in the receiving groove. This structure is simple and easy to process and manufacture.

[0017] Furthermore, the fastener is a vise or a connecting bolt.

[0018] The beneficial effects of adopting the above technical solution are: using a vise or connecting bolts to clamp or connect and fix two mating clamping seats, so that the diaphragm assembly is firmly fixed on the press clamping table, ensuring that the diaphragm assembly will not move during stamping, and ensuring the effect of valve seat stamping installation.

[0019] Furthermore, it also includes a guide member clamped between the two clamping plates, with the stamping rod passing through the guide member.

[0020] Furthermore, the guide is a U-shaped member with two side plates clamped between the two clamping plates. A guide hole is provided on the horizontal plate of the U-shaped member, and the stamping rod passes through the guide hole.

[0021] The beneficial effects of adopting the above technical solution are: the guide hole can guide the stamping rod, enabling the stamping rod to move vertically up and down, thereby achieving precise stamping of the outer groove edge.

[0022] Furthermore, both sides of the top of the two clamping plates have side plate receiving grooves, and the bottom of the two side plates are respectively placed in the side plate receiving grooves.

[0023] The beneficial effect of adopting the above technical solution is that after the two clamps are aligned, the guide can be fixed on the press clamping table, thus achieving rapid fixation of the guide.

[0024] Furthermore, the top of the stamping rod has a limiting step surface, which abuts against the top surface of the horizontal plate.

[0025] The beneficial effects of adopting the above technical solution are: after the stamping rod is pressed down to the position, the limiting step surface on the stamping rod can abut against the horizontal plate, thereby limiting the downward position of the stamping rod and preventing the valve seat from being squeezed and damaged due to excessive downward movement of the stamping rod.

[0026] Furthermore, the stamping groove is a conical surface structure with a large opening and a small bottom.

[0027] The beneficial effects of adopting the above technical solution are: it enables the outer groove to undergo plastic deformation along the valve seat direction, thereby achieving press-fitting and fixing of the valve seat. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the valve seat in a diaphragm valve.

[0030] Figure 2 This is a three-dimensional structural schematic diagram of a polymer valve seat mounting device for a diaphragm assembly provided by the present invention.

[0031] Figure 3 for Figure 1 A side view structural diagram.

[0032] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the mid-section AA.

[0033] Figure 5 for Figure 1 A schematic diagram of its decomposed structure.

[0034] Figure 6 for Figure 5 A magnified schematic diagram of the structure of part A in the middle.

[0035] Figure 7 This is a schematic diagram showing the valve seat being press-fitted into the mounting groove by bending and crimping the part. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1-7 As shown, an embodiment of the present invention discloses a polymer valve seat mounting device for a diaphragm assembly, comprising:

[0038] The stamping machine (not shown) has a stamping groove 101 on the lower end face of the stamping rod 1 on the stamping machine. The stamping groove 101 is a conical surface structure with a large groove opening and a small groove bottom.

[0039] A press clamping table 2 is located below the stamping rod 1. A diaphragm assembly 300 is press-fitted onto the press clamping table 2. An installation groove 30011 is provided on the top of the diaphragm assembly 300. A valve seat 100 is placed in the installation groove 30011. The inner wall surface 1011 of the stamping groove 101 is pressed against the outer groove edge 300111 of the installation groove 30011, so that the outer groove edge 300111 is bent towards the valve seat 100 to form a bent pressing part 300112 for pressing the valve seat 100 into the installation groove 300111.

[0040] Specifically, the press clamping table 2 includes two clamping plates 21 that open and close, the diaphragm assembly 300 is clamped between the two clamping plates 21, and clamping seats 22 are fixed on the bottom surface of the two clamping plates 21. After the two clamping seats 22 are engaged, they are locked and fixed by a fastener (this component is not shown, it can be a vise or a connecting bolt).

[0041] Each of the two clamping plates 21 has a receiving groove 211 on one side for accommodating the diaphragm assembly 300.

[0042] The diaphragm assembly 300 includes: a valve seat mounting post 3001, a diaphragm mounting post 3002, a diaphragm 3003, and a fixing screw 3004. The top end of the valve seat mounting post 3001 is provided with a mounting groove 30011, and the bottom end of the valve seat mounting post 3001 is integrally connected to the top end of the diaphragm mounting post 3002. The diaphragm 3003 is press-fitted onto the bottom end of the diaphragm mounting post 3002 by the fixing screw 3004.

[0043] The receiving groove 211 includes: a diaphragm mounting column receiving groove 2111, a diaphragm receiving groove 2112, and a fixing screw receiving groove 2113 arranged vertically. The diaphragm mounting column 3002 is placed in the diaphragm mounting column receiving groove 2111, the diaphragm 3003 is placed in the diaphragm receiving groove 2112, and the fixing screw 3004 is placed in the fixing screw receiving groove 2113.

[0044] The bottom end face 30012 of the valve seat mounting column 3001 abuts against the top end face of the clamping plate 21.

[0045] The polymer valve seat mounting device for the diaphragm assembly also includes a guide 3 clamped between two clamping plates 21, and a stamping rod 1 passing through the guide 3.

[0046] The guide member 3 is a U-shaped member, with two side plates 31 clamped between two clamping plates 21. The horizontal plate 32 on the U-shaped member has a guide hole 321, and the stamping rod 1 passes through the guide hole 321.

[0047] Both sides of the top of the two clamping plates 21 have side plate receiving grooves 212, and the bottom of the two side plates 31 are respectively placed in the side plate receiving grooves 212.

[0048] The top of the stamping rod 1 has a limiting step surface 102, which abuts against the top surface of the horizontal plate 32.

[0049] In the above embodiments, the polymer valve seat can be made of materials such as PFA, PEEK, PI, or PCTFE. Different materials allow for different operating environments; for example, PFA is used in high-temperature environments, while PI valve seats can be used in environments with corrosive gases. The valve seat mounting post and diaphragm mounting post can be made of metal, such as 316L, which can be used in environments without corrosive media, such as compressed air or high-purity nitrogen.

[0050] When installing the valve seat, first place the annular valve seat in the mounting groove, then place the diaphragm assembly in the receiving groove between the two clamping plates. Next, align the two clamping plates and use a vise to secure them. Then, the punching rod of the press presses downwards along the outer edge of the mounting groove, causing plastic deformation of the outer edge towards the valve seat, forming a bent crimping section. This bent crimping section is then used to press the valve seat into the mounting groove. With this installation method, the sealing surface of the valve seat does not contact other installation fixtures, thus not affecting the sealing effect. Furthermore, this installation method allows for efficient valve seat assembly and ensures installation quality.

[0051] Furthermore, after the stamping rod is pressed down to the position, the limiting step surface on the stamping rod can abut against the horizontal plate of the guide component, thereby limiting the downward position of the stamping rod and preventing the valve seat from being squeezed and damaged due to excessive downward movement of the stamping rod.

[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A polymer valve seat mounting device for a diaphragm assembly, characterized by, include: A stamping machine, wherein a stamping groove (101) is provided on the lower end face of the stamping rod (1) on the stamping machine. A press clamping table (2) is located below the stamping rod (1). A diaphragm assembly (300) is clamped on the press clamping table (2). An installation groove (30011) is provided on the top of the diaphragm assembly (300). A valve seat (100) is placed in the installation groove (30011). The inner wall surface (1011) of the stamping groove (101) is pressed against the outer groove edge (300111) of the installation groove (300111) so that the outer groove edge (300111) bends towards the valve seat (100) to form a bent pressing part (300112) for pressing the valve seat (100) in the installation groove (300111). The press clamping table (2) includes: two clamping plates (21) that open and close, the diaphragm assembly (300) is clamped between the two clamping plates (21), and clamping seats (22) are fixed on the bottom end surfaces of the two clamping plates (21). The two clamping seats (22) are locked and fixed by fasteners after they are engaged. The inner sides of both clamps (21) are provided with receiving grooves (211) for accommodating the diaphragm assembly (300). The diaphragm assembly (300) includes: a valve seat mounting post (3001), a diaphragm mounting post (3002), a diaphragm (3003), and a fixing screw (3004). The valve seat mounting post (3001) has a mounting groove (30011) at its top end. The bottom end of the valve seat mounting post (3001) is integrally connected to the top end of the diaphragm mounting post (3002). The diaphragm (3003) is pressed onto the bottom end of the diaphragm mounting post (3002) by the fixing screw (3004). The receiving groove (211) includes: a diaphragm mounting column receiving groove (2111), a diaphragm receiving groove (2112), and a fixing screw receiving groove (2113) arranged vertically. The diaphragm mounting column (3002) is placed in the diaphragm mounting column receiving groove (2111), the diaphragm (3003) is placed in the diaphragm receiving groove (2112), and the fixing screw (3004) is placed in the fixing screw receiving groove (2113). The bottom end face (30012) of the valve seat mounting column (3001) abuts against the top end face of the clamp (21).

2. The polymeric valve seat mounting device for a diaphragm assembly of claim 1, wherein The fastener is a vise or a connecting bolt.

3. The polymeric valve seat mounting device for a diaphragm assembly of claim 1, wherein, It also includes a guide (3) held between the two clamping plates (21), and the stamping rod (1) passes through the guide (3).

4. The polymer valve seat mounting device for a diaphragm assembly according to claim 3, characterized in that, The guide (3) is a U-shaped part, with two side plates (31) clamped between two clamping plates (21). A guide hole (321) is provided on the horizontal plate (32) of the U-shaped part, and the stamping rod (1) passes through the guide hole (321).

5. The polymer valve seat mounting device for a diaphragm assembly according to claim 4, characterized in that, Both sides of the top of the two clamps (21) have side plate receiving grooves (212), and the bottom of the two side plates (31) are respectively placed in the side plate receiving grooves (212).

6. The polymer valve seat mounting device for a diaphragm assembly according to claim 4, characterized in that, The top of the stamping rod (1) has a limiting step surface (102), which abuts against the top surface of the horizontal plate (32).

7. A polymer valve seat mounting device for a diaphragm assembly according to any one of claims 1-6, characterized in that, The stamping groove (101) is a conical surface structure with a large opening and a small bottom.

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