Resin mould pressing vacuum valve

Abstract

The utility model belongs to the technical field of vacuum valves, and particularly relates to a resin mould pressing vacuum valve which comprises a valve body, the bottom end of the valve body is in threaded connection with a filtering frame, the bottom end of the filtering frame is in threaded connection with a lower end cover, a connecting rod penetrates through the inner wall of the lower end cover, and the bottom end of the connecting rod is fixedly connected with a switching knob. By arranging a positioning column and a positioning groove, after the filter cartridge works for a long time, a large number of impurities are attached to the outer wall of the filter cartridge, a worker pulls a switching knob, and the switching knob moves to drive the positioning column on the outer wall of a mounting plate to be away from the positioning groove through a connecting rod; the switching knob rotates to drive the positioning column on the outer wall of the mounting plate to rotate through the connecting rod, the mounting plate rotates to drive the filter cartridge to rotate relative to the connecting hole, and then a worker loosens the switching knob, so that the positioning spring drives the positioning column to be embedded with the positioning groove through the elastic force of the positioning spring, and the switching and positioning operation of the filter cartridge is realized. The service life of the filter cartridge is greatly prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum valves, in particular to a resin molded vacuum valve. Background Art

[0002] A vacuum valve refers to a vacuum system component used to change the direction of airflow, adjust the amount of airflow, and cut off or connect pipelines in a vacuum system. The closing part of the vacuum valve is sealed with a rubber sealing ring or a metal sealing ring. With the development of technology, a filter will be installed inside the vacuum valve.

[0003] When the existing resin molded vacuum valve is used, after the filter cartridge has worked for a long time, a large amount of impurities are attached to the outer wall of the filter cartridge, causing the impurities to be sucked into the vacuum container when the vacuum valve is working. In view of this, we propose a resin molded vacuum valve. Utility Model Content

[0004] The purpose of the utility model is to provide a resin molded vacuum valve in order to solve the problem in the background technology mentioned above that after the filter cartridge has been working for a long time, a large amount of impurities are attached to the outer wall of the filter cartridge, causing the impurities to be sucked into the vacuum container when the vacuum valve is working.

[0005] In view of this, the utility model provides a resin molded vacuum valve, comprising a valve body, the bottom end of the valve body is threadedly connected to a filter frame, the bottom end of the filter frame is threadedly connected to a lower end cover, a connecting rod passes through the inner wall of the lower end cover, the bottom end of the connecting rod is fixedly connected to a switching knob, the outer wall of the switching knob is fixedly connected to a pointer, the top end of the connecting rod is fixedly connected to a mounting plate, a positioning spring is provided at the connecting portion between the mounting plate and the lower end cover, a positioning column is fixedly connected to the outer wall of the mounting plate, the inner wall of the filter frame is provided with a positioning groove engaged with the positioning column, the top end of the mounting plate is fixedly connected to a filter cartridge, the outer wall of the filter frame is provided with a connecting hole, the outer wall of the valve body is fixedly connected to an inlet connected to the outer wall of the connecting hole, and a discharge port is provided on the side wall of the valve body away from the inlet;

[0006] The regulating component is located at the top of the valve body and is used to regulate the working pressure of the vacuum valve.

[0007] Based on the above structure, after the filter cartridge has been working for a long time, a large amount of impurities are attached to the outer wall of the filter cartridge. The staff pulls the switching knob, and the movement of the switching knob drives the positioning column on the outer wall of the mounting plate away from the positioning groove through the connecting rod. Then, the staff turns the switching knob, and the rotation of the switching knob drives the positioning column on the outer wall of the mounting plate to rotate through the connecting rod. The rotation of the mounting plate drives the filter cartridge and the connecting hole to rotate relative to each other. Then, the staff releases the switching knob, so that the positioning spring drives the positioning column and the positioning groove to engage through its own elastic force, thereby realizing the switching and positioning operation of the filter cartridge, which greatly improves the service life of the filter cartridge.

[0008] Preferably, the mounting plate forms a snap-fit ​​structure with the filter frame through the positioning column and the positioning groove. When working, the positioning spring drives the positioning column and the positioning groove to fit together through its own elastic force, thereby realizing the switching positioning operation of the filter cartridge.

[0009] Preferably, four groups of positioning columns are provided, and the four groups of positioning columns are distributed in equal-angle circles with respect to the mounting plate. When working, the four groups of positioning columns are provided, which is helpful to improve the stability of the mounting plate installation.

[0010] Preferably, the connecting hole and the inlet port are sealed and the valve body is resin-molded, which facilitates the staff to inject the working gas from the inlet port through the connecting hole into the filter frame during operation, and filter the impurities in the gas through the filter cartridge.

[0011] Preferably, the adjustment component comprises:

[0012] The adjusting frame has an adjusting frame threaded on the top of the valve body, an adjusting rod threaded on the top of the adjusting frame, and an adjusting knob fixedly connected to the top of the adjusting rod. The bottom end of the adjusting rod is screwed on a lifting plate slidingly connected to the inner wall of the adjusting frame, and the bottom end of the lifting plate is fixedly connected to a limiting rod, and the bottom end of the limiting rod is slidingly connected to a working piston sealingly connected to the inner wall of the valve body. A working spring is provided at the connecting part of the working piston and the lifting plate, and the bottom end of the working piston is fixedly connected to a connecting piston sealingly connected to the top of the filter frame. When working, the staff turns the adjusting knob, and the rotation of the adjusting knob drives the adjusting rod to rotate. The rotation of the adjusting rod drives the lifting plate to slide along the inner wall of the adjusting frame through the thread, and the lifting plate drives the working piston to slide vertically along the inner wall of the valve body through the working spring, and the working pressure of the working piston is adjusted by adjusting the height between the lifting plate and the working piston.

[0013] Preferably, the lifting plate forms a lifting structure through the adjusting rod and the adjusting frame, and the central axis of the lifting plate coincides with the central axis of the working piston. During operation, the adjusting rod rotates to drive the lifting plate to slide along the inner wall of the adjusting frame through the thread, and the lifting plate drives the working piston to slide vertically along the inner wall of the valve body through the working spring. The height between the lifting plate and the working piston is adjusted to achieve the adjustment operation of the working pressure of the working piston.

[0014] Preferably, the connecting piston forms an opening and closing structure with the filter frame through a working spring. When working, the gas overcomes the elastic force of the working spring through its own pressure to drive the connecting piston and the filter frame away from each other, so that the valve body and the filter frame are connected, and then the working gas is discharged from the exhaust port, and air is injected into the vacuum container to realize the vacuum degree adjustment operation of the vacuum container.

[0015] The beneficial effects of the utility model are:

[0016] 1. By setting up the lifting plate, the staff turns the adjusting knob, and the rotation of the adjusting knob drives the adjusting rod to rotate. The rotation of the adjusting rod drives the lifting plate to slide along the inner wall of the adjusting frame through the thread. The lifting plate drives the working piston to slide vertically along the inner wall of the valve body through the working spring. The working pressure of the working piston is adjusted by adjusting the height between the lifting plate and the working piston.

[0017] 2. By setting the positioning column and the positioning groove, after the filter cartridge has worked for a long time, a large amount of impurities are attached to the outer wall of the filter cartridge. The staff pulls the switching knob, and the movement of the switching knob drives the positioning column on the outer wall of the mounting plate away from the positioning groove through the connecting rod. Then, the staff turns the switching knob, and the rotation of the switching knob drives the positioning column on the outer wall of the mounting plate to rotate through the connecting rod. The rotation of the mounting plate drives the filter cartridge and the connecting hole to rotate relative to each other. Then, the staff releases the switching knob, so that the positioning spring drives the positioning column and the positioning groove to engage through its own elastic force, thereby realizing the switching and positioning operation of the filter cartridge, which greatly improves the service life of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional connection structure of the filter frame of the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional connection structure of the lifting plate of the utility model.

[0022] The symbols in the figure are:

[0023] 1. Valve body; 2. Filter frame; 3. Lower end cover; 4. Connecting rod; 5. Switching knob; 6. Pointer; 7. Mounting plate; 8. Positioning spring; 9. Positioning column; 10. Positioning groove; 11. Filter cartridge; 12. Connecting hole; 13. Inlet; 14. Outlet; 15. Adjusting frame; 16. Adjusting rod; 17. Adjusting knob; 18. Lifting plate; 19. Limiting rod; 20. Working piston; 21. Working spring; 22. Connecting piston. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 - Figure 4 This application is described in further detail.

[0025] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0026] The embodiment of the present application discloses a resin molded vacuum valve, comprising a valve body 1, the bottom end of the valve body 1 is threadedly connected to a filter frame 2, the bottom end of the filter frame 2 is threadedly connected to a lower end cover 3, the inner wall of the lower end cover 3 is penetrated by a connecting rod 4, the bottom end of the connecting rod 4 is fixedly connected to a switching knob 5, the outer wall of the switching knob 5 is fixedly connected to a pointer 6, the top end of the connecting rod 4 is fixedly connected to a mounting plate 7, a positioning spring 8 is provided at the connection portion between the mounting plate 7 and the lower end cover 3, a positioning column 9 is fixedly connected to the outer wall of the mounting plate 7, a positioning groove 10 engaged with the positioning column 9 is provided on the inner wall of the filter frame 2, a filter cartridge 11 is fixedly connected to the top end of the mounting plate 7, a connecting hole 12 is provided on the outer wall of the filter frame 2, an inlet 13 connected to the outer wall of the connecting hole 12 is fixedly connected to the outer wall of the valve body 1, and a discharge port 14 is provided on the side wall of the valve body 1 away from the inlet 13;

[0027] The regulating component is located at the top of the valve body 1 and is used to regulate the working pressure of the vacuum valve.

[0028] Based on the above structure, after the filter cartridge 11 has worked for a long time, a large amount of impurities are attached to the outer wall of the filter cartridge 11. The staff pulls the switching knob 5, and the switching knob 5 moves through the connecting rod 4 to drive the positioning column 9 on the outer wall of the mounting plate 7 away from the positioning groove 10. Then, the staff turns the switching knob 5, and the switching knob 5 rotates to drive the positioning column 9 on the outer wall of the mounting plate 7 to rotate through the connecting rod 4. The rotation of the mounting plate 7 drives the filter cartridge 11 and the connecting hole 12 to rotate relative to each other. Then, the staff releases the switching knob 5, so that the positioning spring 8 drives the positioning column 9 and the positioning groove 10 to engage through its own elastic force, thereby realizing the switching and positioning operation of the filter cartridge 11, thereby greatly improving the service life of the filter cartridge 11.

[0029] In one embodiment, the mounting plate 7 forms a snap-fit ​​structure with the filter frame 2 through the positioning columns 9 and the positioning grooves 10 .

[0030] In this embodiment, the positioning spring 8 drives the positioning column 9 and the positioning groove 10 to fit together through its own elastic force, thereby realizing the switching positioning operation of the filter cartridge 11.

[0031] In one embodiment, four groups of positioning posts 9 are provided, and the four groups of positioning posts 9 are distributed at equal angles around the mounting plate 7 .

[0032] In this embodiment, four groups of positioning columns 9 are provided to improve the installation stability of the mounting plate 7 .

[0033] In one embodiment, the connection hole 12 and the inlet port 13 are sealed and the valve body 1 is formed by resin molding.

[0034] In this embodiment, it is convenient for the staff to inject the working gas into the filter frame 2 from the inlet 13 through the connecting hole 12 , and filter the impurities in the gas through the filter cartridge 11 .

[0035] In one embodiment, the adjustment component includes:

[0036] The adjusting frame 15 is threadedly connected to the top of the valve body 1, the adjusting rod 16 is threadedly connected to the top of the adjusting frame 15, the adjusting knob 17 is fixedly connected to the top of the adjusting rod 16, the bottom end of the adjusting rod 16 is screwed with a lifting plate 18 that is slidably connected to the inner wall of the adjusting frame 15, the bottom end of the lifting plate 18 is fixedly connected to a limiting rod 19, the bottom end of the limiting rod 19 is slidably connected to a working piston 20 that is sealed and connected to the inner wall of the valve body 1, a working spring 21 is provided at the connecting portion between the working piston 20 and the lifting plate 18, and the bottom end of the working piston 20 is fixedly connected to a connecting piston 22 that is sealed and connected to the top of the filter frame 2.

[0037] In this embodiment, the staff rotates the adjusting knob 17, and the rotation of the adjusting knob 17 drives the adjusting rod 16 to rotate. The rotation of the adjusting rod 16 drives the lifting plate 18 to slide along the inner wall of the adjusting frame 15 through the thread. The lifting plate 18 drives the working piston 20 to slide vertically along the inner wall of the valve body 1 through the working spring 21. The working pressure of the working piston 20 is adjusted by adjusting the height between the lifting plate 18 and the working piston 20.

[0038] In one embodiment, the lifting plate 18 forms a lifting structure with the adjusting frame 15 through the adjusting rod 16 , and the central axis of the lifting plate 18 coincides with the central axis of the working piston 20 .

[0039] In this embodiment, the adjusting rod 16 rotates to drive the lifting plate 18 to slide along the inner wall of the adjusting frame 15 through the thread. The lifting plate 18 drives the working piston 20 to slide vertically along the inner wall of the valve body 1 through the working spring 21. By adjusting the height between the lifting plate 18 and the working piston 20, the working pressure of the working piston 20 is adjusted.

[0040] In one embodiment, the connecting piston 22 forms an opening and closing structure with the filter frame 2 through the working spring 21 .

[0041] In this embodiment, the gas overcomes the elastic force of the working spring 21 through its own pressure to drive the connecting piston 22 away from the filter frame 2, so that the valve body 1 and the filter frame 2 are connected, and then the working gas is discharged from the exhaust port 14, and air is injected into the vacuum container to realize the vacuum degree adjustment operation of the vacuum container.

[0042] When the resin molded vacuum valve of this embodiment is in use, first, the staff injects the working gas into the filter frame 2 from the inlet 13, and filters the impurities in the gas through the filter cartridge 11. Then, the gas overcomes the elastic force of the working spring 21 through its own pressure and drives the connecting piston 22 away from the filter frame 2, so that the valve body 1 and the filter frame 2 are connected, and then the working gas is discharged from the exhaust port 14, and air is injected into the vacuum container to adjust the vacuum degree of the vacuum container. Then, the staff turns the adjusting knob 17, and the rotation of the adjusting knob 17 drives the adjusting rod 16 to rotate. The rotation of the adjusting rod 16 drives the lifting plate 18 to slide along the inner wall of the adjusting frame 15 through the thread. The lifting plate 18 drives the working piston 20 to slide vertically along the inner wall of the valve body 1 through the working spring 21. The height between the lifting plate 18 and the working piston 20 is adjusted to adjust the working pressure of the working piston 20.

[0043] Finally, after the filter cartridge 11 has worked for a long time, a large amount of impurities are attached to the outer wall of the filter cartridge 11. The staff pulls the switching knob 5, and the switching knob 5 moves through the connecting rod 4 to drive the positioning column 9 on the outer wall of the mounting plate 7 away from the positioning groove 10. Then, the staff turns the switching knob 5, and the switching knob 5 rotates through the connecting rod 4 to drive the positioning column 9 on the outer wall of the mounting plate 7 to rotate. The rotation of the mounting plate 7 drives the filter cartridge 11 and the connecting hole 12 to rotate relative to each other. Then, the staff releases the switching knob 5, so that the positioning spring 8 drives the positioning column 9 and the positioning groove 10 to fit together through its own elastic force, thereby realizing the switching and positioning operation of the filter cartridge 11, and greatly improving the service life of the filter cartridge 11.

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A resin molded vacuum valve, characterized in that: include: A valve body (1), wherein the bottom end of the valve body (1) is threadedly connected to a filter frame (2), the bottom end of the filter frame (2) is threadedly connected to a lower end cover (3), a connecting rod (4) passes through the inner wall of the lower end cover (3), the bottom end of the connecting rod (4) is fixedly connected to a switching knob (5), the outer wall of the switching knob (5) is fixedly connected to a pointer (6), the top end of the connecting rod (4) is fixedly connected to a mounting plate (7), and a positioning spring (6) is provided at the connection portion between the mounting plate (7) and the lower end cover (3) 8), a positioning column (9) is fixedly connected to the outer wall of the mounting plate (7), a positioning groove (10) engaged with the positioning column (9) is provided on the inner wall of the filter frame (2), a filter cartridge (11) is fixedly connected to the top of the mounting plate (7), a connecting hole (12) is provided on the outer wall of the filter frame (2), an inlet (13) connected to the outer wall of the connecting hole (12) is fixedly connected to the outer wall of the valve body (1), and a discharge port (14) is provided on the side wall of the valve body (1) away from the inlet port (13); An adjusting component is located at the top end of the valve body (1) and is used to adjust the working pressure of the vacuum valve.

2. The resin molded vacuum valve according to claim 1, characterized in that: The mounting plate (7) forms a snap-fit ​​structure with the filter frame (2) via the positioning column (9) and the positioning groove (10).

3. The resin molded vacuum valve according to claim 1, characterized in that: Four groups of positioning posts (9) are provided, and the four groups of positioning posts (9) are distributed at equal angles around the mounting plate (7).

4. The resin molded vacuum valve according to claim 1, characterized in that: The connection hole (12) and the inlet (13) are sealed and connected, and the valve body (1) is formed by resin molding.

5. The resin molded vacuum valve according to claim 1, characterized in that: The adjustment component comprises: An adjusting frame (15), wherein the top end of the valve body (1) is threadedly connected to the adjusting frame (15), the top end of the adjusting frame (15) is threadedly connected to an adjusting rod (16), the top end of the adjusting rod (16) is fixedly connected to an adjusting knob (17), the bottom end of the adjusting rod (16) is threadedly connected to a lifting plate (18) slidably connected to the inner wall of the adjusting frame (15), the bottom end of the lifting plate (18) is fixedly connected to a limiting rod (19), the bottom end of the limiting rod (19) is slidably connected to a working piston (20) sealed to the inner wall of the valve body (1), a working spring (21) is provided at the connection portion between the working piston (20) and the lifting plate (18), and the bottom end of the working piston (20) is fixedly connected to a connecting piston (22) sealed to the top end of the filter frame (2).

6. The resin molded vacuum valve according to claim 5, characterized in that: The lifting plate (18) forms a lifting structure through the adjusting rod (16) and the adjusting frame (15), and the central axis of the lifting plate (18) coincides with the central axis of the working piston (20).

7. The resin molded vacuum valve according to claim 5, characterized in that: The connecting piston (22) forms an opening and closing structure with the filter frame (2) via the working spring (21).

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