Stop valve casting and preparation device and process

Abstract

The invention belongs to the technical field of valves, particularly relates to a valve casting of a stop valve and a preparation device and process, and aims to overcome the defects that in the prior art, the supporting capacity of a valve body of the stop valve used at present is limited, and in the production process of the stop valve, flow production of the stop valve is difficult to achieve. A connecting flange is fixedly installed at the top of the valve shell, the same upper end cover is fixedly installed on the connecting flange through a plurality of bolts, a sealing rubber ring is fixedly installed in the valve shell, an assembling ring is fixedly installed at the bottom of the upper end cover, and the bottom of the assembling ring is attached to the inner wall of the sealing rubber ring in a sealed mode. According to the technical scheme, the arranged pressure relief mechanism can be used for adjusting water pressure, so that the inner wall of the valve shell can be protected, assembly line production can be achieved when the stop valve is assembled, the produced stop valve can be moved to a designated station, and workers of different types of work can assemble the stop valve conveniently.

Description

Technical Field

[0001] The present invention relates to the field of valve technology, and in particular to a stop valve casting and a preparation device and process. Background Art

[0002] The stop valve, also known as the gate valve, is one of the most widely used valves. The reason why it is so popular is that the friction between the sealing surfaces during opening and closing is small, it is relatively durable, the opening height is not large, it is easy to manufacture and maintain, and it is suitable not only for medium and low pressures, but also for high pressures.

[0003] At present, the valve body of the stop valve is made in the form of a casting, and the pressure that the water inlet end can withstand is often limited. When encountering strong water pressure, it is difficult to relieve the water pressure. During long-term use, it is easy to cause cracks in the valve body; Furthermore, during the production process of the stop valve, it is often necessary to go through the process steps of valve body welding and later valve core installation, but the existing valve assembly stations are often single stations. When the stop valve is produced in a process-based manner, the valve body needs to be continuously disassembled and assembled, which is more troublesome; In view of the above problems, the present invention document proposes a stop valve casting and a preparation device and process. Summary of the invention

[0004] The present invention provides a stop valve casting and a preparation device and process, which solve the shortcomings of the stop valve body currently used in the prior art, that is, the support capacity is limited and it is difficult to realize the process production of the stop valve during the production process of the stop valve.

[0005] The present invention provides the following technical solutions: A stop valve casting comprises a valve housing, a connecting flange is fixedly installed on the top of the valve housing, an upper end cover is fixedly installed on the connecting flange by multiple bolts, a sealing rubber ring is fixedly installed in the valve housing, an assembly ring is fixedly installed on the bottom of the upper end cover, the bottom of the assembly ring is sealed and fitted with the inner wall of the sealing rubber ring, a water outlet is fixedly installed on the inner wall of one side of the valve housing, and a water inlet is fixedly installed on the bottom of the valve housing. The valve casting also includes: The valve core mechanism is installed in the valve housing, the valve core mechanism is located below the water outlet, the top of the valve core mechanism passes through the upper end cover and extends to the top of the upper end cover, the valve core mechanism is connected to the upper end cover, and the valve core mechanism is used to control the valve to open or close; Two pressure relief mechanisms are symmetrically installed on the bottom inner walls on both sides of the valve housing, and one side of the pressure relief mechanism extends to the outside of the valve housing. The pressure relief mechanism is used to relieve the pressure inside the valve housing and protect the valve housing.

[0006] In one possible design, the valve core mechanism includes a mounting ring fixedly mounted on the inner wall of the valve housing, a retaining ring fixedly mounted on the bottom of the mounting ring, an adjusting assembly penetratingly connected to the upper end cover, the bottom of the adjusting assembly extends into the retaining ring and is mounted with a valve block, and the valve block is sealed and fits against the inner wall of the retaining ring.

[0007] In one possible design, the adjusting assembly includes a sealing nut that passes through the upper end cover and is fixedly connected to the upper end cover, a sealing screw is threadedly connected to the sealing nut, the top end of the sealing screw extends to the top of the sealing nut and is fixedly installed with a handwheel, and the bottom end of the sealing screw extends into the retaining ring and is fixedly connected to the valve block.

[0008] In one possible design, the pressure relief mechanism includes a pressure relief pipe fixedly mounted on the bottom inner wall of one side of the valve housing, the top end of the pressure relief pipe extends to the outside of the valve housing and is fixedly mounted with a pressure relief cylinder, the pressure relief cylinder is connected to a pressure regulating assembly, the top of the pressure regulating assembly extends to the top of the pressure relief cylinder and is connected to a pressure-bearing assembly, the bottom of the pressure-bearing assembly extends into the pressure relief cylinder and fits tightly with the inner wall of the pressure relief cylinder, the pressure-bearing assembly is connected to a cover plate, and the cover plate is clamped with the top opening of the pressure relief cylinder.

[0009] In one possible design, the pressure regulating assembly includes an external threaded tube fixedly mounted on the pressure relief cylinder, a threaded ring is threadedly mounted on the external threaded tube, a connecting ring is rotatably connected to the top of the threaded ring, and a plurality of mounting rods are fixedly mounted at equal intervals on the top of the connecting ring, and the top ends of the plurality of mounting rods extend to the top of the cover plate and are connected to the pressure-bearing assembly.

[0010] In one possible design, the pressure-bearing component includes a pressure ring fixedly connected to the top ends of multiple mounting rods, a transmission rod slidably connected through the pressure ring, the bottom end of the transmission rod penetrates the cover plate and extends into the pressure relief cylinder, the transmission rod is slidably connected to the cover plate, and a sealing ring is fixedly installed on the inner wall of the pressure relief cylinder, a force disk is fixedly installed on the bottom end of the transmission rod, a plug is fixedly installed at the bottom center position of the force disk, the plug penetrates the sealing ring and fits with the inner wall of the sealing ring, the force disk fits with the inner wall of the pressure relief cylinder, a sealing ring is fixedly installed on the top of the force disk, and the sealing ring fits tightly with the inner wall of the pressure relief cylinder, and a compression spring located above the cover plate is sleeved on the transmission rod, and the top and bottom ends of the compression spring are fixedly connected to the bottom of the pressure ring and the transmission rod respectively.

[0011] A preparation device, applied to the above-mentioned stop valve casting, comprises a workbench, a plurality of mounting seats are symmetrically fixedly mounted on the top of the workbench, and a same annular track is fixedly mounted on the plurality of mounting seats, characterized in that the preparation device also comprises: A plurality of supporting mechanisms, wherein the plurality of supporting mechanisms are all installed on the circular track; A plurality of clamping mechanisms are respectively connected to corresponding supporting mechanisms, and the clamping mechanisms are used to clamp and position the water inlet end of the valve.

[0012] In one possible design, the support mechanism includes a support plate, the bottom of which is symmetrically rotatably connected to two stop wheels, both of which are rollingly connected to the annular track, and the top of the support plate is fixedly mounted with a first support plate and a second support plate, and the clamping mechanism is connected to the first support plate and the second support plate, respectively.

[0013] In a possible design, the clamping mechanism includes a first clamping hoop rotatably connected to the top of one side of the first support plate, four support rods are symmetrically fixedly installed on one side of the first clamping hoop, one end of the four support rods is fixedly installed with the same connecting plate, the four support rods are slidably sleeved with the same second clamping hoop, the second clamping hoop cooperates with the first clamping hoop to clamp and position the water inlet end, hooks are rotatably connected on both sides of the second clamping hoop, and clamping rods are fixedly installed on both sides of the first clamping hoop, and the hooks are clamped with the corresponding clamping rods; A support shaft is fixedly installed on one side of the connecting plate, one end of the support shaft passes through the second support plate and extends to the other side of the second support plate, the support shaft is rotatably connected to the second support plate, a rectangular bar is fixedly installed on one end of the support shaft, a handle tube is slidably sleeved on the rectangular bar, a tension spring is fixedly installed on the inner wall of one side of the handle tube, one end of the tension spring is fixedly connected to one end of the rectangular bar, a clamping ring is fixedly sleeved on the handle tube, a protrusion is provided on the clamping ring, a positioning ring is fixedly installed on the top of one side of the second support plate, a plurality of positioning grooves are evenly spaced on the inner wall of the positioning ring, and the protrusions are movably clamped with the plurality of positioning grooves respectively.

[0014] A preparation process, applied in the preparation device as described above, comprises the following steps: S1. First, place the water inlet end between the first clamp and the second clamp. Then, push the second clamp to clamp and position the water inlet end. Then, rotate the two hooks to connect with the corresponding clamp rods. Then, position the second clamp so as to stably clamp the water inlet end. S2. Butt the valve housing with the water inlet end, connect the water inlet end and the valve housing by welding, and then weld the water outlet end and the valve housing according to the hole position on the valve housing; S3. After the welding of the water inlet end, the water outlet end and the valve housing is completed, the support plate can be pushed to move the valve housing to the workstation where the assembler is located; S4. The valve core mechanism and the two pressure relief mechanisms are assembled in sequence. During the assembly process, the handle tube can be pulled to move the protrusion out of the corresponding positioning groove. Then, the rectangular bar can be rotated by rotating the handle tube, which can drive the support shaft to rotate, thereby driving the connecting plate to rotate. When the connecting plate rotates, the water inlet end can be rotated and adjusted under the drive of the four support rods, so that the valve can be easily adjusted when assembling the valve, so that the valve can provide a certain convenience when assembling; S5. When the valve is used after the assembly process, water can flow into the valve housing from the water inlet end, and then the sealing screw can be driven to rotate by turning the hand wheel. At this time, under the threaded transmission action of the sealing nut, the sealing screw can be moved longitudinally, thereby driving the valve block to move synchronously. After the valve block moves upward and breaks contact with the inner wall of the retaining ring, the water input through the water inlet end can flow into the valve housing and then flow upward through the retaining ring and the mounting ring. Then the water can be discharged from the water outlet end. When the valve block moves downward and contacts closely with the inner wall of the retaining ring, the retaining ring can be blocked, thereby preventing the flow of water. S7. When water does not flow, the water pressure below the mounting ring will be relatively large, so this part of the valve housing will be subject to a relatively large water pressure. At this time, water can be transported to the pressure relief cylinder through the pressure relief pipe, which will generate pressure on the plug. At this time, after the water pressure is greater than the initial pressure value of the compression spring, the plug can be pushed to move upward, and when the plug moves upward, the space of the pressure relief cylinder can be used to buffer the water pressure, thereby reducing the pressure on the valve housing, and when the transmission rod moves upward with the plug, it can continue to pressurize the compression spring until the water pressure and the elastic force of the compression spring reach a relative equilibrium state, thereby maintaining the water pressure in a relatively balanced state; S8. During installation and commissioning, the initial compression amount of the compression spring can be adjusted according to the daily water pressure of the delivery, that is: by rotating the threaded ring, under the threaded transmission action with the external threaded pipe, the threaded ring can be moved longitudinally along the external threaded pipe, and when the external threaded pipe moves downward, it can drive the connecting ring to move downward, so that the pressure ring can be driven downward through multiple installation rods, which can increase the elastic potential energy of the compression spring and the resistance to the movement of the plug. Conversely, when the pressure ring moves upward, the elastic potential energy of the compression spring can be reduced, and the resistance to the movement of the plug is reduced accordingly, so it can be applied to valve shells made of different materials.

[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention.

[0016] Beneficial effects: In the present invention, the valve core mechanism is provided, and the valve block can be driven to move longitudinally by operating the adjusting assembly. After the valve block moves upward and breaks contact with the inner wall of the retaining ring, the water input through the water inlet end can flow into the valve housing, and then can flow upward through the retaining ring and the mounting ring, and then the water can be discharged from the water outlet end. When the valve block moves downward and closely contacts the inner wall of the retaining ring, the retaining ring can be blocked, thereby preventing the flow of water. In the present invention, by providing a pressure relief mechanism, when water does not flow, the water pressure below the mounting ring will be relatively large, so this part of the valve housing will be subjected to a relatively large water pressure. At this time, water can be transported to the pressure relief cylinder through the pressure relief pipe to apply pressure to the pressure-bearing component. The pressure-bearing component itself has a buffering effect and can buffer the water pressure, thereby providing buffering protection for the valve housing. In the present invention, by means of the support mechanism, after the water inlet end is clamped by the clamping mechanism, the movable support plate can move along the circular track, and the valve to be assembled can be moved to any position on the workbench, so that after the valve housing is welded, it is convenient for subsequent workers to assemble the valve core mechanism; In the present invention, by means of the provided clamping mechanism, after the water inlet end is placed between the first clamp and the second clamp, the second clamp can be pushed to clamp and position the water inlet end, and then the two hooks can be rotated to be connected with the corresponding clamping rods, and the second clamp can be positioned at this time so as to stably clamp the water inlet end, and the handle tube can be pulled to move the protrusion out of the corresponding positioning groove, and then the rectangular bar can be driven to rotate by rotating the handle tube, and at this time the support shaft can be driven to rotate, thereby driving the connecting plate to rotate, and when the connecting plate rotates, the water inlet end can be rotated and adjusted under the drive of the four support rods, so that when the valve is assembled, the valve can be adjusted conveniently, so that a certain convenience can be provided when the valve is assembled.

[0017] When the present invention is actually applied, the water pressure can be adjusted by utilizing the provided pressure relief mechanism, thereby protecting the inner wall of the valve housing. When the stop valve is assembled, assembly line production can be realized, and the produced stop valve can be moved to a designated work station, making it convenient for workers of different trades to assemble the stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional schematic diagram of the overall structure of a stop valve casting provided by an embodiment of the present invention; Figure 2 A three-dimensional schematic diagram of the valve housing and upper end cover separation structure of the stop valve casting provided by an embodiment of the present invention; Figure 3A three-dimensional schematic diagram of a partial cross-sectional structure of a valve housing of a stop valve casting provided by an embodiment of the present invention; Figure 4 A three-dimensional schematic diagram of the connection structure of the upper end cover, sealing screw, mounting ring, retaining ring and valve core of the stop valve casting provided by an embodiment of the present invention; Figure 5 A three-dimensional schematic diagram of the cross-sectional structure of the pressure relief cylinder of the stop valve casting provided by an embodiment of the present invention; Figure 6 A schematic diagram of the three-dimensional structure of a stop valve casting and a manufacturing device provided in an embodiment of the present invention; Figure 7 A three-dimensional schematic diagram of a connection structure of a first support plate, a second support plate, a first clamp and a second clamp of a preparation device provided in an embodiment of the present invention; Figure 8 A three-dimensional schematic diagram of the connection structure of a support plate, a first support plate and a second support plate of a preparation device provided in an embodiment of the present invention.

[0019] Reference numerals: 1. Valve housing; 2. Water inlet end; 3. Water outlet end; 4. Connecting flange; 5. Sealing rubber ring; 6. Upper end cover; 7. Sealing nut; 8. Sealing screw; 9. Valve block; 10. Handwheel; 11. Assembly ring; 12. Mounting ring; 13. Retaining ring; 14. Pressure relief pipe; 15. Pressure relief cylinder; 16. Blocking ring; 17. Externally threaded pipe; 18. Threaded ring; 19. Connecting ring; 20. Mounting rod; 21. Pressing ring; 22. Transmission rod; 23. Force plate; 24. Plug; 25. Sealing ring ; 26. Cover plate; 27. Compression spring; 28. Workbench; 281. Mounting seat; 29. ​​Annular track; 30. Support plate; 31. Block wheel; 32. First support plate; 33. Second support plate; 34. First clamp; 35. Support rod; 36. Second clamp; 37. Hook; 38. Clamp rod; 39. Connecting plate; 40. Support shaft; 41. Rectangular bar; 42. Handle tube; 43. Tension spring; 44. Clamp; 45. Protrusion; 46. Positioning ring; 47. Positioning groove. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention. In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0021] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0022] In the embodiments of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present invention. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0024] Example 1: Reference Figure 1-Figure 5The valve casting of a stop valve of this embodiment includes a valve housing 1, a connecting flange 4 is fixedly installed on the top of the valve housing 1, and an upper end cover 6 is fixedly installed on the connecting flange 4 by multiple bolts. A sealing rubber ring 5 is fixedly installed in the valve housing 1, and an assembly ring 11 is fixedly installed at the bottom of the upper end cover 6. The bottom of the assembly ring 11 is sealed and fitted with the inner wall of the sealing rubber ring 5 to ensure the sealing inside the valve housing 1. A water outlet 3 is fixedly installed on the inner wall of one side of the valve housing 1, and a water inlet 2 is fixedly installed at the bottom of the valve housing 1 to facilitate water flow in and out.

[0025] like Figure 2-Figure 3 In the embodiment, a valve core mechanism is provided in the valve housing 1, and the valve core mechanism is located below the water outlet end 3. The valve core mechanism includes a mounting ring 12 fixedly mounted on the inner wall of the valve housing 1, and a retaining ring 13 is fixedly mounted on the bottom of the mounting ring 12. An adjusting assembly is connected through the upper end cover 6, and the adjusting assembly includes a sealing nut 7 that penetrates the upper end cover 6 and is fixedly connected to the upper end cover 6, and a sealing screw 8 is threadedly connected through the sealing nut 7. The top end of the sealing screw 8 extends to the top of the sealing nut 7 and is fixedly mounted with a handwheel 10 for convenient manual operation. The bottom end of the sealing screw 8 extends into the retaining ring 13 and is fixedly connected to the valve block 9. By turning the handwheel 10, the sealing screw 8 can be driven to rotate. Since the sealing screw 8 is threadedly connected to the sealing nut 7, the sealing screw 8 will move longitudinally, thereby driving the valve block 9 to move longitudinally.

[0026] When the valve block 9 moves upward and breaks contact with the inner wall of the retaining ring 13, the water input through the water inlet end 2 can flow into the valve housing 1, and then can flow upward through the retaining ring 13 and the mounting ring 12, and then the water can be discharged from the water outlet end 3. When the valve block 9 moves downward and closely contacts the inner wall of the retaining ring 13, the retaining ring 13 can be blocked, thereby preventing the water flow and closing the valve.

[0027] In addition, if Figure 5 In the embodiment, two pressure relief mechanisms are symmetrically installed on the bottom inner walls of both sides of the valve housing 1. Each pressure relief mechanism includes a pressure relief pipe 14 fixedly installed on the bottom inner wall of one side of the valve housing 1, and the top end of the pressure relief pipe 14 extends to the outside of the valve housing 1 and is fixedly installed with a pressure relief cylinder 15. The pressure relief cylinder 15 is connected with a pressure regulating assembly, which includes an external threaded pipe 17 and a threaded ring 18. The top end of the external threaded pipe 17 is fixedly connected to the bottom of the pressure relief cylinder 15, and the threaded ring 18 is threadedly connected to the external threaded pipe 17. A connecting ring 19 is fixedly installed at the bottom end of the external threaded pipe 17, and a plurality of mounting rods 20 are fixedly installed at the bottom of the connecting ring 19.

[0028] like Figure 5In the embodiment, the top of the pressure regulating assembly extends to the top of the pressure relief cylinder 15 and is connected to the pressure bearing assembly. The pressure bearing assembly includes a pressure ring 21 fixedly connected to the top of a plurality of mounting rods 20, and a transmission rod 22 is slidably connected to the pressure ring 21. The bottom end of the transmission rod 22 passes through the cover plate 26 and extends into the pressure relief cylinder 15, and the transmission rod 22 is slidably connected to the cover plate 26. The cover plate 26 is clamped with the top opening of the pressure relief cylinder 15 to ensure the sealing of the inside of the pressure relief cylinder 15.

[0029] A blocking ring 16 is fixedly mounted on the inner wall of the pressure relief cylinder 15, a force plate 23 is fixedly mounted on the bottom end of the transmission rod 22, a plug 24 is fixedly mounted at the bottom center of the force plate 23, and the plug 24 penetrates the blocking ring 16 and fits with the inner wall of the blocking ring 16. The force plate 23 fits with the inner wall of the pressure relief cylinder 15, ensuring the stability of the force plate 23 in the pressure relief cylinder 15. A sealing ring 25 is fixedly mounted on the top of the force plate 23, and the sealing ring 25 fits tightly with the inner wall of the pressure relief cylinder 15, further ensuring the sealing inside the pressure relief cylinder 15.

[0030] The transmission rod 22 is sleeved with a compression spring 27 located above the cover plate 26, and the top and bottom ends of the compression spring 27 are respectively fixedly connected to the bottom of the pressure ring 21 and the transmission rod 22. By rotating the threaded ring 18, the external threaded tube 17 and the connecting ring 19 can be driven to move longitudinally, thereby driving the pressure ring 21 and the pressure component to move longitudinally through multiple mounting rods 20. In this way, the compression amount of the compression spring 27 can be adjusted, thereby changing the pressure intensity of the pressure component.

[0031] When water is not flowing, the water pressure below the mounting ring 12 will be relatively large, so this part of the valve housing 1 will be subjected to a relatively large water pressure. At this time, water can be transported to the pressure relief cylinder 15 through the pressure relief pipe 14, exerting pressure on the force plate 23 and the plug 24. Since the force plate 23 and the plug 24 themselves have a buffering effect, the water pressure can be buffered, thereby providing buffering protection for the valve housing 1. When the water pressure is greater than the initial pressure value of the compression spring 27, the plug 24 can be pushed to move upward, and when the plug 24 moves upward, the space of the pressure relief cylinder 15 can be used to buffer the water pressure, thereby reducing the pressure on the valve housing 1. At the same time, when the transmission rod 22 moves upward with the plug 24, it will continue to apply pressure to the compression spring 27 until the water pressure and the elastic force of the compression spring 27 reach a relative equilibrium state, thereby maintaining the water pressure in a relative equilibrium state, further protecting the valve housing 1 from the influence of excessive pressure.

[0032] Example 2: Reference Figure 5-Figure 8, a preparation device, which is specially used in the assembly process of the stop valve casting as described above. The preparation device includes a workbench 28, on the top of which a plurality of mounting seats 281 are symmetrically fixedly installed, and a circular track 29 is fixedly installed on these mounting seats 281. Around this circular track 29, the preparation device is also equipped with a plurality of supporting mechanisms and clamping mechanisms.

[0033] like Figure 6 As shown, the specific implementation of the support mechanism is as follows: each support mechanism includes a support plate 30, and the bottom of the support plate 30 is symmetrically connected to two blocking wheels 31. The two blocking wheels 31 can roll on the annular track 29, so that the support plate 30 can move smoothly along the annular track 29. The top of the support plate 30 is fixedly installed with a first support plate 32 and a second support plate 33, which will be used to connect the clamping mechanism.

[0034] like Figure 7 As shown, the clamping mechanism is designed to clamp and position the water inlet end 2 of the valve. Each clamping mechanism includes a first clamp 34 rotatably connected to the top of one side of the first support plate 32. Four support rods 35 are symmetrically fixedly installed on one side of the first clamp 34, and one end of these four support rods 35 is commonly fixedly connected to a connecting plate 39. On the four support rods 35, a second clamp 36 is slidably sleeved, and this second clamp 36 cooperates with the first clamp 34 to tightly clamp the water inlet end 2. In order to facilitate the fixing of the second clamp 36, hooks 37 are rotatably connected to both sides of the second clamp 36, and clamping rods 38 are fixedly installed on both sides of the first clamp 34. These hooks 37 can be clamped with the corresponding clamping rods 38 to fix the position of the second clamp 36.

[0035] like Figure 7 As shown, a support shaft 40 is fixedly installed on one side of the connecting plate 39, and one end of the support shaft 40 penetrates the second support plate 33 and extends to the other side thereof, and is rotatably connected to the second support plate 33. A rectangular bar 41 is fixedly installed on one end of the support shaft 40, and a handle tube 42 is slidably sleeved on the rectangular bar 41. In order to provide sufficient resilience, a tension spring 43 is fixedly installed on the inner wall of one side of the handle tube 42, and one end of the tension spring 43 is fixedly connected to one end of the rectangular bar 41. A clamping ring 44 is also fixedly sleeved on the handle tube 42, and a protrusion 45 is provided on the clamping ring 44. A positioning ring 46 is fixedly installed on the top of one side of the second support plate 33, and a plurality of positioning grooves 47 are provided on the inner wall of the positioning ring 46 at equal intervals. The protrusion 45 can be movably clamped with these positioning grooves 47, thereby fixing the position of the handle tube 42.

[0036] When using this preparation device, the water inlet end 2 needs to be placed between the first clamp 34 and the second clamp 36, and then the second clamp 36 is pushed to clamp and position the water inlet end 2. After that, the two hooks 37 are rotated to connect with the corresponding clamp rods 38, so as to fix the position of the second clamp 36. At this time, the support plate 30 can move along the annular track 29 to move the valve to be assembled to any position on the workbench 28.

[0037] If the valve needs to be rotated and adjusted, the handle tube 42 can be pulled to move the protrusion 45 out of the corresponding positioning groove 47. Then, the handle tube 42 is rotated to drive the rectangular bar 41 to rotate, thereby driving the support shaft 40 and the connecting plate 39 to rotate. When the connecting plate 39 rotates, the water inlet end 2 is rotated and adjusted under the drive of the four support rods 35. In this way, when assembling the valve, the position of the valve can be easily adjusted, providing a certain convenience.

[0038] The present invention provides a preparation process, which is applied in the preparation device as described above, and comprises the following steps: S1. First, place the water inlet end 2 between the first clamp 34 and the second clamp 36. Then, push the second clamp 36 to clamp and position the water inlet end 2. Then, rotate the two hooks 37 to connect with the corresponding clamp rods 38. Then, position the second clamp 36 so as to stably clamp the water inlet end 2. S2, butt the valve housing 1 with the water inlet end 2, connect the water inlet end 2 with the valve housing 1 by welding, and then weld the water outlet end 3 with the valve housing 1 according to the hole position on the valve housing 1; S3. After the water inlet end 2 and the water outlet end 3 are welded to the valve housing 1, the support plate 30 can be pushed to move the valve housing 1 to the workstation where the assembler is located; S4, assemble the valve core mechanism and the two pressure relief mechanisms in sequence, and during the assembly process, the handle tube 42 can be pulled to move the protrusion 45 out of the corresponding positioning groove 47, and then the rectangular bar 41 can be driven to rotate by rotating the handle tube 42, and at this time, the support shaft 40 can be driven to rotate, thereby driving the connecting plate 39 to rotate, and when the connecting plate 39 rotates, the water inlet end 2 can be rotated and adjusted under the drive of the four support rods 35, so that when the valve is assembled, it is convenient to adjust the position of the valve, so that the valve can provide a certain convenience when it is assembled; S5. When the valve is used after the assembly process, water can flow into the valve housing 1 from the water inlet end 2, and then the sealing screw 8 is driven to rotate by turning the hand wheel 10. At this time, under the threaded transmission action of the sealing nut 7, the sealing screw 8 can be moved longitudinally, thereby driving the valve block 9 to move synchronously. After the valve block 9 moves upward and breaks contact with the inner wall of the retaining ring 13, the water input through the water inlet end 2 can flow into the valve housing 1, and then flow upward through the retaining ring 13 and the mounting ring 12. Then the water can be discharged from the water outlet end 3. When the valve block 9 moves downward and contacts closely with the inner wall of the retaining ring 13, the retaining ring 13 can be blocked, thereby preventing the flow of water. S7. When water does not flow, the water pressure below the mounting ring 12 will be relatively large, so this part of the valve housing 1 will be subjected to a relatively large water pressure. At this time, water can be transported to the pressure relief cylinder 15 through the pressure relief pipe 14, which will generate pressure on the plug 24. At this time, after the water pressure is greater than the initial pressure value of the compression spring 27, the plug 24 can be pushed to move upward, and when the plug 24 moves upward, the space of the pressure relief cylinder 15 can be used to buffer the water pressure, thereby reducing the pressure on the valve housing 1, and when the transmission rod 22 moves upward with the plug 24, it can continue to pressurize the compression spring 27 until the water pressure and the elastic force of the compression spring 27 reach a relatively balanced state, thereby maintaining the water pressure in a relatively balanced state; S8. During installation and commissioning, the initial compression amount of the compression spring 27 can be adjusted according to the daily water pressure of the delivery, that is: by rotating the threaded ring 18, under the threaded transmission action with the external threaded tube 17, the threaded ring 18 can be moved longitudinally along the external threaded tube 17, and when the external threaded tube 17 moves downward, it can drive the connecting ring 19 to move downward, so that the pressure ring 21 can be driven to move downward through multiple installation rods 20, so that the elastic potential energy of the compression spring 27 can be increased, and the resistance to the movement of the plug 24 will also increase. Conversely, when the pressure ring 21 moves upward, the elastic potential energy of the compression spring 27 can be reduced, and the resistance to the movement of the plug 24 is reduced accordingly, so it can be applied to valve housings 1 made of different materials.

[0039] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention; the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A globe valve casting, comprising a valve housing (1), a connecting flange (4) fixedly mounted on the top of the valve housing (1), an upper end cover (6) fixedly mounted on the connecting flange (4) by means of a plurality of bolts, a sealing rubber ring (5) fixedly mounted inside the valve housing (1), an assembly ring (11) fixedly mounted on the bottom of the upper end cover (6), the bottom of the assembly ring (11) being in sealing contact with the inner wall of the sealing rubber ring (5), a water outlet (3) being fixedly mounted through the inner wall of one side of the valve housing (1), a water inlet (2) fixedly mounted on the bottom of the valve housing (1), characterized in that: The valve casting also includes: A valve core mechanism, the valve core mechanism is installed in the valve housing (1), the valve core mechanism is located below the water outlet end (3), the top of the valve core mechanism passes through the upper end cover (6) and extends to the top of the upper end cover (6), the valve core mechanism is connected to the upper end cover (6), and the valve core mechanism is used to control the opening or closing of the valve; Two pressure relief mechanisms are symmetrically mounted on the bottom inner walls of both sides of the valve housing (1), and one side of the pressure relief mechanism extends to the outside of the valve housing (1). The pressure relief mechanism is used to relieve the pressure inside the valve housing (1) and protect the valve housing (1).

2. The stop valve casting according to claim 1, characterized in that: The valve core mechanism comprises a mounting ring (12) fixedly mounted on the inner wall of the valve housing (1), a retaining ring (13) fixedly mounted on the bottom of the mounting ring (12), an adjusting component penetratingly connected to the upper end cover (6), the bottom of the adjusting component extending into the retaining ring (13) and mounted with a valve block (9), the valve block (9) being in sealing contact with the inner wall of the retaining ring (13).

3. The stop valve casting according to claim 2, characterized in that: The adjustment assembly comprises a sealing nut (7) passing through the upper end cover (6) and fixedly connected to the upper end cover (6); a sealing screw (8) is threadedly connected to the sealing nut (7); the top end of the sealing screw (8) extends to the top of the sealing nut (7) and is fixedly mounted with a hand wheel (10); and the bottom end of the sealing screw (8) extends into the retaining ring (13) and is fixedly connected to the valve block (9).

4. The stop valve casting according to claim 3, characterized in that: The pressure relief mechanism comprises a pressure relief pipe (14) fixedly mounted on the inner wall of the bottom of one side of the valve housing (1), the top end of the pressure relief pipe (14) extending to the outside of the valve housing (1) and fixedly mounted with a pressure relief cylinder (15), the pressure relief cylinder (15) being connected with a pressure regulating assembly, the top of the pressure regulating assembly extending to the top of the pressure relief cylinder (15) and being connected with a pressure receiving assembly, the bottom of the pressure receiving assembly extending into the pressure relief cylinder (15) and being tightly fitted with the inner wall of the pressure relief cylinder (15), the pressure receiving assembly being connected with a cover plate (26), the cover plate (26) being clamped with the top opening of the pressure relief cylinder (15).

5. The stop valve casting according to claim 4, characterized in that: The pressure regulating assembly comprises an externally threaded tube (17) fixedly sleeved on the pressure relief cylinder (15); a threaded ring (18) is threadedly sleeved on the externally threaded tube (17); a connecting ring (19) is rotatably connected to the top of the threaded ring (18); a plurality of mounting rods (20) are fixedly mounted at equal intervals on the top of the connecting ring (19); the top ends of the plurality of mounting rods (21) all extend above the cover plate and are all connected to the pressure-bearing assembly.

6. The stop valve casting according to claim 5, characterized in that: The pressure-bearing assembly comprises a pressure ring (21) fixedly connected to the top ends of the plurality of mounting rods (20), a transmission rod (22) slidably connected to the pressure ring (21), the bottom end of the transmission rod (22) passes through the cover plate (26) and extends into the pressure relief cylinder (15), the transmission rod (22) is slidably connected to the cover plate (26), a blocking ring (16) is fixedly installed on the inner wall of the pressure relief cylinder (15), a force plate (23) is fixedly installed on the bottom end of the transmission rod (22), and a blocking ring (16) is fixedly installed at the bottom center of the force plate (23). The plug (24) penetrates the sealing ring (16) and fits with the inner wall of the sealing ring (16), the force plate (23) fits with the inner wall of the pressure relief cylinder (15), a sealing ring (25) is fixedly installed on the top of the force plate (23), and the sealing ring (25) fits tightly with the inner wall of the pressure relief cylinder (15), and a compression spring (27) located above the cover plate (26) is sleeved on the transmission rod (22), and the top and bottom ends of the compression spring (27) are fixedly connected to the bottom of the pressure ring (21) and the transmission rod (22) respectively.

7. A preparation device, used in the stop valve casting as claimed in claim 6, comprising a workbench (28), a plurality of mounting seats (281) are symmetrically fixedly mounted on the top of the workbench (28), and a same annular track (29) is fixedly mounted on the plurality of mounting seats (281), characterized in that: The preparation device also includes: A plurality of supporting mechanisms, each of which is mounted on the annular track (29); A plurality of clamping mechanisms are respectively connected to corresponding supporting mechanisms, and the clamping mechanisms are used to clamp and position the water inlet end (2) of the valve.

8. The preparation device according to claim 7, characterized in that: The support mechanism comprises a support plate (30), the bottom of the support plate (30) is symmetrically rotatably connected to two blocking wheels (31), the two blocking wheels (31) are both rollingly connected to the annular track (29), the top of the support plate (30) is respectively fixedly mounted with a first support plate (32) and a second support plate (33), and the clamping mechanism is respectively connected to the first support plate (32) and the second support plate (33).

9. The preparation device according to claim 8, characterized in that: The clamping mechanism comprises a first clamping hoop (34) rotatably connected to the top of one side of the first support plate (32); four support rods (35) are symmetrically fixedly installed on one side of the first clamping hoop (34); one end of the four support rods (35) is fixedly installed with a same connecting plate (39); a same second clamping hoop (36) is slidably sleeved on the four support rods (35); the second clamping hoop (36) cooperates with the first clamping hoop (34) and is used to clamp and position the water inlet end (2); hooks (37) are rotatably connected to both sides of the second clamping hoop (36); clamping rods (38) are fixedly installed on both sides of the first clamping hoop (34); the hooks (37) are clamped with the corresponding clamping rods (38); A support shaft (40) is fixedly mounted on one side of the connecting plate (39), one end of the support shaft (40) passes through the second support plate (33) and extends to the other side of the second support plate (33), the support shaft (40) is rotatably connected to the second support plate (33), a rectangular bar (41) is fixedly mounted on one end of the support shaft (40), a handle tube (42) is slidably sleeved on the rectangular bar (41), a tension spring (43) is fixedly mounted on the inner wall of one side of the handle tube (42), one end of the tension spring (43) is fixedly connected to one end of the rectangular bar (41), a clamping ring (44) is fixedly sleeved on the handle tube (42), a protrusion (45) is provided on the clamping ring (44), a positioning ring (46) is fixedly mounted on the top of one side of the second support plate (33), a plurality of positioning grooves (47) are evenly spaced on the inner wall of the positioning ring (46), and the protrusions (45) are movably clamped with the plurality of positioning grooves (47) respectively.

10. A preparation process, applied in the preparation device as claimed in claim 9, characterized in that: The following steps are involved: S1. First, the water inlet end (2) is placed between the first clamp (34) and the second clamp (36). At this time, the second clamp (36) can be pushed to clamp and position the water inlet end (2). Then, the two hooks (37) can be rotated to connect with the corresponding clamping rods (38). At this time, the second clamp (36) can be positioned so as to stably clamp the water inlet end (2); S2, butting the valve housing (1) and the water inlet end (2), connecting the water inlet end (2) and the valve housing (1) by welding, and then welding the water outlet end (3) and the valve housing (1) according to the hole position on the valve housing (1); S3. After the water inlet end (2) and the water outlet end (3) are welded to the valve housing (1), the support plate (30) can be pushed to move the valve housing (1) to the workstation where the assembler is located; S4. The valve core mechanism and the two pressure relief mechanisms are assembled in sequence. During the assembly process, the handle tube (42) can be pulled to move the protrusion (45) out of the corresponding positioning groove (47). Then, the handle tube (42) can be rotated to drive the rectangular bar (41) to rotate, thereby driving the support shaft (40) to rotate, thereby driving the connecting plate (39) to rotate. When the connecting plate (39) rotates, the water inlet end (2) can be rotated and adjusted under the drive of the four support rods (35), so that when the valve is assembled, the valve can be adjusted conveniently, so that the valve can be assembled to provide a certain convenience; S5. When the valve is used after the valve is assembled, water can flow into the valve housing (1) from the water inlet end (2). Then, the hand wheel (10) is turned to drive the sealing screw (8) to rotate. At this time, the sealing screw (8) can be driven longitudinally by the threaded transmission of the sealing nut (7), thereby driving the valve block (9) to move synchronously. After the valve block (9) moves upward and breaks contact with the inner wall of the retaining ring (13), the water input through the water inlet end (2) can flow into the valve housing (1) and then flow upward through the retaining ring (13) and the mounting ring (12). Then, the water can be discharged from the water outlet end (3). When the valve block (9) moves downward and comes into close contact with the inner wall of the retaining ring (13), the retaining ring (13) can be blocked, thereby preventing the flow of water. S7. When water does not flow, the water pressure below the mounting ring (12) will be relatively large, so this part of the valve housing (1) will be subjected to a relatively large water pressure. At this time, water can be transported to the pressure relief cylinder (15) through the pressure relief pipe (14), which will generate pressure on the plug (24). At this time, after the water pressure is greater than the initial pressure value of the compression spring (27), the plug (24) can be pushed to move upward, and when the plug (24) moves upward, the space of the pressure relief cylinder (15) can be used to buffer the water pressure, thereby reducing the pressure on the valve housing (1). When the transmission rod (22) moves upward with the plug (24), it can continue to apply pressure to the compression spring (27) until the water pressure and the elastic force of the compression spring (27) reach a relatively balanced state, thereby maintaining the water pressure in a relatively balanced state; S8. During installation and commissioning, the initial compression amount of the compression spring (27) can be adjusted according to the daily water pressure of the delivery, that is, by rotating the threaded ring (18), the threaded ring (18) can be moved longitudinally along the external threaded tube (17) under the threaded transmission action with the external threaded tube (17). When the external threaded tube (17) moves downward, the connecting ring (19) can be driven to move downward, thereby driving the pressure ring (21) to move downward through the plurality of mounting rods (20), thereby increasing the elastic potential energy of the compression spring (27) and increasing the resistance to the movement of the plug (24). Conversely, when the pressure ring (21) moves upward, the elastic potential energy of the compression spring (27) can be reduced, and the resistance to the movement of the plug (24) is reduced accordingly. Therefore, the valve can be applied to valve housings (1) made of different materials.

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