Main shaft spring locking mechanism and angle valve

Abstract

The application provides a main shaft spring locking mechanism, which comprises a main shaft, a sleeve and a wedge-shaped clamping block. The main shaft is sleeved with an elastic element, one end of the elastic element abuts against the inner wall of a valve cavity, a wedge-shaped cavity and a through hole communicated with the wedge-shaped cavity are formed in the sleeve, the main shaft is connected to the sleeve through the through hole, one end of the sleeve is formed with an annular flange, and the other end of the elastic element abuts against the annular flange. The wedge-shaped sleeve is sleeved on and connected to the main shaft, the wedge-shaped clamping block is located in the wedge-shaped cavity, the outer peripheral wall of the wedge-shaped clamping block is formed with an abutting taper surface, and the abutting taper surface abuts against the inner wall of the wedge-shaped cavity. By forming the wedge-shaped cavity matched with the wedge-shaped clamping block in the sleeve, when the sleeve is sleeved on the wedge-shaped clamping block, the abutting taper surface abuts against the inner wall of the wedge-shaped cavity, so that the wedge-shaped clamping block tightly holds the main shaft and is fixed, the reliability of the locking structure during long-term use is improved, and the production efficiency of the product is ensured.

Description

Technical Field

[0001] This application relates to the technical field of valves, and in particular to a spindle spring locking mechanism and an angle valve. Background Technology

[0002] In vacuum process equipment for semiconductor chip manufacturing, angle valves are key components for controlling the opening and closing of angled vacuum pipelines. Their performance directly affects the system's sealing integrity, particle control level, and production stability.

[0003] Currently, common locking mechanisms include a self-locking nut and locking plate fastening scheme at the end of the spindle, or a scheme that uses a retaining spring to install a retaining circlip in the spindle slot to fix and limit the spring pressure plate.

[0004] However, during use, because the spring needs to reciprocate frequently, if a self-locking nut is used for tightening, the locking plate of the nut is prone to damage to the spindle during installation or maintenance, which can easily lead to the failure of the locking function. If a snap ring structure is used, when the spring force is large, the limited force-bearing surface of the snap ring is prone to stress concentration, which can also lead to the failure of the locking function. Utility Model Content

[0005] The purpose of this application is to overcome the shortcomings of the prior art and provide a spindle spring locking mechanism and angle valve with a locking function that is not prone to failure.

[0006] The objective of this application is achieved through the following technical solution: A spindle spring locking mechanism, comprising: spindle; An elastic element is sleeved on the main shaft, and one end of the elastic element abuts against the inner wall of the valve cavity; The sleeve has a wedge-shaped cavity and a through hole communicating with the wedge-shaped cavity. The main shaft is connected to the sleeve through the through hole. The sleeve has an annular flange. The other end of the elastic element abuts against the annular flange. A wedge-shaped locking block is sleeved on the main shaft and fixedly connected to the main shaft. The wedge-shaped locking block is located inside the wedge-shaped cavity. The outer peripheral wall of the wedge-shaped locking block forms an abutting cone surface, which abuts against the inner wall of the wedge-shaped cavity.

[0007] In one embodiment, there are multiple wedge-shaped blocks, which are arranged around the outer peripheral wall of the main shaft, and each wedge-shaped block is fixedly connected to the main shaft.

[0008] In one embodiment, the outer peripheral wall of the spindle is formed with an annular groove, and the inner wall of the wedge-shaped block is provided with a protrusion, the protrusion being located within the annular groove.

[0009] In one embodiment, the portion of the protrusion facing the groove has a transition slope.

[0010] In one embodiment, the angle between the generatrix of the contact cone and the axis of the spindle is in the range of 6° to 45°.

[0011] In one embodiment, an expansion groove is provided at one end of the wedge-shaped block.

[0012] In one embodiment, the sleeve includes a sleeve body and an annular flange extending outward from the outer peripheral wall of the sleeve body. The portion of the sleeve body connected to the annular flange is provided with an annular positioning surface, and the elastic element is sleeved on the annular positioning surface. The wedge-shaped cavity and the through hole are both formed in the sleeve body.

[0013] In one embodiment, the sleeve is a one-piece molded structure.

[0014] An angle valve includes a valve body, a valve core, a valve plate, and a spindle spring locking mechanism as described in any of the above embodiments. The valve body has a valve cavity, an outlet and an inlet at a preset angle to each other, and the inlet and the outlet are both connected to the valve cavity. The valve core is disposed in the valve body, and the spindle spring locking mechanism is disposed in the valve cavity. One end of the spindle of the spindle spring locking mechanism is connected to the valve core, and the other end of the spindle is connected to the valve plate. The valve plate is used to close or open the outlet.

[0015] In one embodiment, a sealing ring is provided at the end of the valve plate facing the outlet, and the sealing ring is movably abutted against the periphery of the outlet.

[0016] In one embodiment, the angle valve further includes a protective cover, the two ends of which abut against the valve plate and the valve core, respectively, and the main shaft spring locking mechanism is located inside the protective cover.

[0017] Compared with the prior art, this application has at least the following advantages: The aforementioned spindle spring locking mechanism has a wedge-shaped cavity inside the sleeve that is adapted to the wedge-shaped block. When the sleeve is fitted onto the wedge-shaped block, the contact cone surface abuts against the inner wall of the wedge-shaped cavity, causing the wedge-shaped block to hold the spindle tightly and fix it, thereby achieving the locking function.

[0018] Both the ferrule and the wedge-shaped locking block are directly fitted onto the spindle, minimizing the risk of spindle damage during installation and maintenance. Simultaneously, the contact cone surface abuts against the inner wall of the ferrule, and the inner wall of the wedge-shaped locking block abuts against the spindle, increasing the stress-bearing surface of the wedge-shaped locking block and thus preventing stress concentration. This improves the long-term reliability of the locking structure and ensures product manufacturing efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a main shaft spring locking mechanism in implementation; Figure 2 for Figure 1 The diagram shows the structure of the ferrule of the spindle spring locking mechanism. Figure 3 for Figure 1 A schematic diagram of the wedge-shaped locking block of the spindle spring locking mechanism shown; Figure 4 This is a schematic diagram of the structure of an angle valve according to one embodiment; Figure 5 for Figure 4 The cross-sectional view of the angle valve shown; Figure 6 for Figure 5 A magnified view of a portion of the angle valve A shown; Figure 7 This is a schematic diagram of the card sleeve according to another embodiment. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] To better understand the technical solution and beneficial effects of this application, the following detailed description is provided in conjunction with specific embodiments: Please see Figures 1 to 6 This is a spindle spring locking mechanism 10 according to an embodiment of the present invention, which includes a spindle 100, an elastic element 110, a sleeve 200, and a wedge-shaped locking block 300. The elastic element 110 is sleeved on the spindle 100, and one end of the elastic element 110 is used to abut against the inner wall 21c of the valve cavity; the sleeve 200 has a wedge-shaped cavity 210 and a through hole 201 communicating with the wedge cavity 210, and the spindle 100 is connected to the sleeve 200 through the through hole 201; the sleeve 200 has an annular flange 220, and the other end of the elastic element 110 abuts against the annular flange 220. The wedge-shaped block 300 is sleeved on the main shaft 100 and fixedly connected to the main shaft 100. The wedge-shaped block 300 is also located in the wedge cavity 210. The outer peripheral wall of the wedge-shaped block 300 forms an abutting cone surface 310, which abuts against the inner wall of the wedge cavity 210.

[0025] In this embodiment, the spindle spring locking mechanism 10 has a wedge-shaped cavity 210 adapted to the wedge-shaped block 300 within the sleeve 200. When the sleeve 200 is fitted onto the wedge-shaped block 300, the contact cone surface 310 abuts against the inner wall of the wedge-shaped cavity 210, causing the wedge-shaped block 300 to grip and fix the spindle 100, thereby achieving the locking function of the spindle 100. Since both the sleeve 200 and the wedge-shaped block 300 are directly fitted onto the spindle 100, damage to the spindle 100 is less likely during installation and maintenance. Simultaneously, the contact cone surface 310 abuts against the inner wall of the sleeve 200, and the inner wall of the wedge-shaped block 300 abuts against the spindle 100, increasing the force-bearing surface of the wedge-shaped block 300 and preventing stress concentration. This improves the long-term reliability of the spindle spring locking mechanism 10 and ensures product production efficiency. Furthermore, such as Figure 3 and Figure 7As shown, the outer peripheral wall of the spindle 100 has an annular groove 101, and the inner wall of the wedge-shaped locking block 300 has a protrusion 310, with the protrusion 320 located within the annular groove 101. It can be understood that when the sleeve 200 is fitted onto the wedge-shaped locking block 300, the protrusion 320 on the inner wall of the wedge-shaped locking block 300 engages with the annular groove 101 of the spindle 100, preventing displacement of the wedge-shaped locking block 300 in the locked state. This avoids slippage of the wedge-shaped locking block 300 causing failure of the spindle spring locking mechanism 10, improves the long-term reliability of the spindle spring locking mechanism 10, and ensures product production efficiency.

[0026] Furthermore, such as Figure 1 and Figure 7 As shown, there are multiple wedge-shaped locking blocks 300, which are arranged around the outer peripheral wall of the main shaft 100, and each wedge-shaped locking block 300 is fixedly connected to the main shaft 100. In this embodiment, there are two or more wedge-shaped locking blocks. The multiple wedge-shaped locking blocks 300 are arranged along the outer peripheral wall of the main shaft 100, and all the multiple wedge-shaped locking blocks 300 are located within the wedge-shaped cavity 210, so that the sleeve 200 is fitted onto the whole formed by the multiple wedge-shaped locking blocks 300. The split wedge-shaped locking blocks 300 can be quickly disassembled and assembled. When maintenance or replacement is required, the wedge-shaped locking blocks 300 can be directly removed without disassembling other related parts, shortening downtime and improving maintenance efficiency. In addition, the multiple wedge-shaped locking blocks 300 are arranged around the outer peripheral wall of the main shaft 100, eliminating the need to reduce the thickness or diameter of the main shaft 100 with the cooperation of the protrusion 320, ensuring the strength of the main shaft 100, improving the long-term reliability of the main shaft spring locking mechanism 10, and ensuring the production efficiency of the product.

[0027] like Figure 3 , Figure 5 as well as Figure 6 As shown, in one embodiment, a transition slope 321 is formed on the portion of the protrusion 320 facing the groove. By providing the transition slope 321 between the insertion surfaces of the protrusion 320, the protrusion 320 can be guided to smoothly insert into the annular groove 101, thereby avoiding collision between the protrusion 320 and the outer wall of the annular groove 101 during assembly or use, thus ensuring the reliability and stability of the spindle spring locking mechanism 10 in long-term use.

[0028] like Figure 3 , Figure 5 as well as Figure 6As shown, in one embodiment, the angle between the generatrix of the contact cone surface 310 and the axis of the spindle 100 ranges from 6° to 45°. Specifically, in this embodiment, the angle between the generatrix of the contact cone surface 310 and the axis of the spindle 100 is 10°, so that the wedge-shaped locking block 300 and the sleeve 200 can still achieve self-locking after the driving force is removed, preventing the wedge-shaped locking block 300 from falling out of the sleeve 200 and causing the spindle spring locking mechanism 10 to fail, thereby improving the long-term reliability of the spindle spring locking mechanism 10 and ensuring the production efficiency of the product.

[0029] like Figure 3 As shown, in one embodiment, an expansion groove 330 is provided at one end of the wedge-shaped locking block 300. Specifically, in this embodiment, expansion grooves 330 are provided on both sides of the wedge-shaped locking block 300, and the expansion grooves 330 of two adjacent wedge-shaped locking blocks 300 are arranged opposite to each other, which makes it convenient for the operator to pry open the wedge-shaped locking block 300 with tools, so as to separate the wedge-shaped locking block 300 from the main shaft 100, and realize the disassembly and replacement of the wedge-shaped locking block 300.

[0030] like Figure 5 and Figure 6 As shown, in one embodiment, the large end of the wedge cavity 210 has a guide slope 211. When the wedge-shaped locking block 300 is inserted into the sleeve 200, the wedge-shaped locking block 300 is inserted from the large end to the small end of the wedge cavity 210. The guide slope 211 can guide the wedge-shaped locking block 300 to slide accurately into the wedge cavity 210, avoiding direct impact or jamming, reducing wear on the contact surface, and extending service life. At the same time, the bottom of the wedge-shaped locking block 300 is exposed in the wedge cavity 210, making it easy to remove and maintain. In this embodiment, the large end of the wedge cavity 210 is the end of the wedge cavity 210 closer to the valve plate 200, and the small end of the wedge cavity 210 is the end of the wedge cavity 210 away from the valve plate 200, so that the wedge-shaped locking block 300 can reliably abut and be contained within the wedge cavity 210.

[0031] Furthermore, such as Figure 7 As shown, in one embodiment, the sleeve 200 includes a sleeve body 230 and an annular flange 220 extending outward from the outer peripheral wall of the sleeve body. A wedge-shaped cavity 210 and a through hole 201 are both formed in the sleeve body 230. An annular positioning surface 231 is provided at the portion of the sleeve body 230 that connects to the annular flange 220. An elastic member 110 is sleeved on the annular positioning surface 231. It can be understood that one end of the elastic member 110 abuts against the annular flange 220, and the tail of the elastic member 110 surrounds the annular positioning surface 231. That is, by providing a vertical annular positioning surface 231 between the sleeve body 230 and the annular flange 220, the vertical annular positioning surface 231 is used to radially position the end of the elastic member 110, preventing radial wobbling of the elastic member 110, improving the stability of the elastic member 110, thereby improving the long-term reliability of the spindle spring locking mechanism 10 and ensuring product production efficiency.

[0032] like Figure 2 As shown, in one embodiment, the ferrule 200 is a one-piece molded structure. It is understood that a one-piece ferrule 200 simplifies the manufacturing process and assembly steps. Furthermore, the one-piece molding process ensures the structural integrity of the ferrule 200, thereby improving its structural strength and extending its service life.

[0033] Please see Figure 4 and Figure 5 This application also discloses an angle valve 20, which includes a valve body 21, a valve core 22, a valve plate 23, and a spindle spring locking mechanism 10 in any of the above embodiments. The valve body 21 has a valve cavity 21c, an outlet 21a and an inlet 21b at a preset angle to each other. The inlet 21b and the outlet 21a are both connected to the valve cavity 21c. The valve core 22 is disposed in the valve body 21. The spindle spring locking mechanism 10 is disposed in the valve cavity 21c. One end of the spindle 100 of the spindle spring locking mechanism 10 is connected to the valve core 22, and the other end of the spindle 100 is connected to the valve plate 23. The valve plate 23 is used to close or open the outlet 21a.

[0034] In this embodiment, the angle valve 20 is equipped with a spindle spring locking mechanism 10. The wedge-shaped locking block 300 and the sleeve 200 of the spindle spring locking mechanism 10 work together to achieve the locking function of the spindle 100, thereby improving the reliability and stability of the angle valve 20 in long-term use and ensuring the production efficiency of the product.

[0035] like Figure 5 As shown, in one embodiment, a sealing ring 24 is provided at the end of the valve plate 23 facing the outlet 21a, and the sealing ring 24 movably abuts against the periphery of the outlet 21a. By providing a sealing ring 24 at the bottom of the valve plate 23, when the angle valve 20 is closed, the sealing ring 24 abuts against the periphery of the outlet 21a of the angle valve 20, thereby improving the sealing performance of the angle valve 20.

[0036] like Figure 5 As shown, in one embodiment, the angle valve 20 further includes a protective cover 25, with both ends of the protective cover 25 abutting against the valve plate 23 and the valve core 22, respectively. The spindle spring locking mechanism 10 is located inside the protective cover 25. It is understood that by setting the protective cover 25 to connect the valve core 22 and the valve plate 23, the spindle spring locking mechanism 10 is isolated from the flow channel, preventing wear particles generated during use from contaminating the flow channel. Simultaneously, it prevents material contamination of the spindle spring locking mechanism 10, improving its stability and thus enhancing the reliability of the angle valve.

[0037] Compared with the prior art, this application has at least the following advantages: The aforementioned spindle spring locking mechanism has a wedge-shaped cavity inside the sleeve that is adapted to the wedge-shaped block. When the sleeve is fitted onto the wedge-shaped block, the contact cone surface abuts against the inner wall of the wedge-shaped cavity, causing the wedge-shaped block to hold the spindle tightly and fix it, thereby achieving the locking function.

[0038] Both the ferrule and the wedge-shaped locking block are directly fitted onto the spindle, minimizing the risk of spindle damage during installation and maintenance. Simultaneously, the contact cone surface abuts against the inner wall of the ferrule, and the inner wall of the wedge-shaped locking block abuts against the spindle, increasing the stress-bearing surface of the wedge-shaped locking block and thus preventing stress concentration. This improves the long-term reliability of the locking structure and ensures product manufacturing efficiency.

[0039] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A spindle spring locking mechanism, characterized in that, include: spindle; An elastic element is sleeved on the main shaft, and one end of the elastic element abuts against the inner wall of the valve cavity; The sleeve has a wedge-shaped cavity and a through hole communicating with the wedge-shaped cavity. The main shaft is connected to the sleeve through the through hole. The sleeve has an annular flange. The other end of the elastic element abuts against the annular flange. A wedge-shaped locking block is sleeved on the main shaft and fixedly connected to the main shaft. The wedge-shaped locking block is located inside the wedge-shaped cavity. The outer peripheral wall of the wedge-shaped locking block forms an abutting cone surface, which abuts against the inner wall of the wedge-shaped cavity.

2. The spindle spring locking mechanism according to claim 1, characterized in that, The number of wedge-shaped blocks is multiple, and the multiple wedge-shaped blocks are arranged around the outer peripheral wall of the main shaft, with each wedge-shaped block fixedly connected to the main shaft.

3. The spindle spring locking mechanism according to claim 1, characterized in that, The outer peripheral wall of the spindle is formed with an annular groove, and the inner wall of the wedge-shaped block is provided with a protrusion, which is located in the annular groove.

4. The spindle spring locking mechanism according to claim 3, characterized in that, The portion of the protrusion facing the groove has a transition slope.

5. The spindle spring locking mechanism according to claim 1, characterized in that, The angle between the generatrix of the contact cone and the axis of the main shaft ranges from 6° to 45°.

6. The spindle spring locking mechanism according to claim 1, characterized in that, An expansion groove is provided at one end of the wedge-shaped block.

7. The spindle spring locking mechanism according to claim 1, characterized in that, The sleeve includes a sleeve body and an annular flange extending outward from the outer peripheral wall of the sleeve body. The part of the sleeve body connected to the annular flange is provided with an annular positioning surface, and the elastic element is sleeved on the annular positioning surface. The wedge-shaped cavity and the through hole are both opened in the sleeve body.

8. The spindle spring locking mechanism according to claim 1, characterized in that, The card sleeve is a one-piece molded structure.

9. An angle valve, characterized in that, The device includes a valve body, a valve core, a valve plate, and a spindle spring locking mechanism as described in any one of claims 1-7. The valve body has a valve cavity, an outlet and an inlet at a preset angle to each other, and the inlet and the outlet are both connected to the valve cavity. The valve core is disposed in the valve body, and the spindle spring locking mechanism is disposed in the valve cavity. One end of the spindle of the spindle spring locking mechanism is connected to the valve core, and the other end of the spindle is connected to the valve plate. The valve plate is used to close or open the outlet.

10. The angle valve according to claim 9, characterized in that, A sealing ring is provided at one end of the valve plate facing the outlet, and the sealing ring is movably abutted against the periphery of the outlet; and / or, the angle valve further includes a protective cover, the two ends of the protective cover abutting against the valve plate and the valve core respectively, and the main shaft spring locking mechanism is located inside the protective cover.

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