CN218971889U

CN218971889U - High vacuum diaphragm valve with easily-detached diaphragm

Info

Publication number: CN218971889U
Application number: CN202223532202.XU
Authority: CN
Inventors: 姜健; 朱光磊; 姜宏亮
Original assignee: Ningbo Hongke Vacuum Valve Technology Co ltd
Current assignee: Ningbo Hongke Vacuum Valve Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-05
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a high-vacuum diaphragm valve with a readily detachable diaphragm, which comprises a valve body and a valve cover, wherein the top end of the valve body is provided with the valve cover, the bottom end of the valve body is provided with a valve seat, a flow passage is arranged in the valve body, connecting flanges are arranged at an outlet and an inlet of the flow passage, the top end of the valve cover is provided with a top cover, the bottom end of the top cover is provided with a thread groove, the thread groove is internally connected with a valve rod through threads, the bottom end of the valve rod is provided with a diaphragm, and two sides of the bottom of the inner wall of the valve cover are respectively provided with a mounting groove; this high vacuum diaphragm valve of diaphragm easy tear open is through being provided with mounting bolt, diaphragm, valve gap, mounting groove, sealing washer, I-shaped groove, when need dismantle the renew diaphragm, opens sealing bolt, and the mounting bolt is dismantled, but quick replacement diaphragm need not to change whole diaphragm valve, has reduced the maintenance cost of later stage, has solved the problem of being inconvenient for changing the diaphragm valve.

Description

High vacuum diaphragm valve with easily-detached diaphragm

Technical Field

The utility model relates to the technical field of diaphragm valves, in particular to a high-vacuum diaphragm valve with a easily-detached diaphragm.

Background

The basic principle of the vacuum diaphragm valve is that a diaphragm sheet (valve plate) is pressed downwards through a valve rod to close a flow passage, so that the circulation of a medium is stopped, and the vacuum diaphragm valve is mainly used for opening, closing and controlling non-corrosive high-pressure gas.

A metal diaphragm valve for high pressure fluid control is disclosed in application number CN 202123182688.4. The metal diaphragm valve comprises a valve shell, a valve cover arranged on the valve shell, an opening and closing structure arranged in the valve cover, a diaphragm arranged between the valve cover and the valve shell, a reinforcing component and an orientation component which are arranged on the valve shell. The reinforcing component is used for reinforcing and sealing the placement of the diaphragm and comprises two groups of diaphragm grooves formed in the position, facing the valve cover, of the valve housing, and two groups of pressing plates welded in the position, facing the valve housing, of the valve cover. The orientation assembly comprises an embedding groove formed in the diaphragm and a sealing layer arranged in the embedding groove. The metal diaphragm valve has high air tightness, so that the air resistance of the metal diaphragm valve in the opening and closing process is small, the diaphragm sheet can be prevented from shifting, and the operation is labor-saving when the metal diaphragm valve is used. The sealing effect is excellent when the metal diaphragm valve is closed, so that the diaphragm sheet is prevented from being flushed by high-pressure fluid.

The diaphragm in the technical scheme keeps good sealing effect, once the valve housing and the valve cover are disassembled and assembled to replace the diaphragm, the sealing performance is easy to lose efficacy, so that the diaphragm is essentially not allowed to be disassembled and assembled for multiple times to avoid the air tightness failure, the later replacement and maintenance cost is increased, and once the diaphragm is damaged, the whole valve body can be replaced.

In view of this, we propose a high vacuum diaphragm valve with easily detachable diaphragm, which can be repeatedly detached and replaced with a new diaphragm while maintaining high sealing performance.

Disclosure of Invention

The utility model aims to provide a high-vacuum diaphragm valve with easily-detached diaphragm, which solves the problem that the diaphragm is inconvenient to detach and replace in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high vacuum diaphragm valve of diaphragm easy tear open, includes valve body and valve gap, the valve gap is installed on the top of valve body, the bottom of valve body is provided with the disk seat, the inside runner that is provided with of valve body, the flange is installed in export and entrance to the runner, the top cap is installed on the top of valve gap, the screw thread groove has been seted up to the top cap bottom, there is the valve rod through threaded connection in the screw thread groove, the diaphragm is installed to the bottom of valve rod, the mounting groove has been seted up respectively to the both sides of valve gap inner wall bottom.

Preferably, the two sides of the diaphragm are respectively embedded into the mounting groove, the valve cover is externally provided with a mounting bolt, the diaphragm is assembled and fixed with the mounting groove through the mounting bolt, the two sides of the bottom of the valve cover are respectively provided with a sealing bolt, the runner is integrally welded with a sealing sheet above the inner walls of the outlet and the inlet, and the sealing sheet is assembled and fixed with the valve cover through the sealing bolts.

Preferably, the bottom fixedly connected with case of diaphragm, the bottom of runner is provided with the valve plug, case and valve plug assorted.

Preferably, the top end of the diaphragm is fixedly connected with an I-shaped groove, and the bottom end of the valve rod is embedded into the I-shaped groove and can rotate relatively.

Preferably, the top fixedly connected with of valve rod changes the handle, the outside activity of valve rod has cup jointed the spring, the jack has been seted up in the left side of valve rod, the inserted bar has been pegged graft in the left side of top cap, the outside fixed spacing piece that has cup jointed of valve rod, the spout has been seted up respectively to top cap inner wall both sides, the both sides of spacing piece inlay respectively inside the spout.

Preferably, both sides of disk seat bottom all fixedly connected with support, the bottom of support is integrative to be welded with the base.

Compared with the prior art, the utility model has the beneficial effects that: the high-vacuum diaphragm valve with the easily-detached diaphragm not only realizes quick replacement of the diaphragm, has good sealing effect, is suitable for circulation of various gas media, but also solves the problem that the manual switch valve is easy to leak due to the fact that the manual switch valve is not in place;

(1) By arranging the mounting bolts, the diaphragm, the valve cover, the mounting grooves, the sealing sheets and the I-shaped grooves, when a new diaphragm needs to be detached and replaced, the sealing bolts are opened from the two sides of the outside, the valve cover is detached from the valve body, then the mounting bolts are detached, the diaphragm is pulled out of the mounting grooves by force, the function of quickly replacing the diaphragm is realized, the whole diaphragm valve does not need to be replaced, and the later maintenance cost is reduced;

(2) The sealing piece, the sealing bolt, the mounting bolt and the sealing piece are arranged, so that the part of the bottom of the diaphragm in the flow channel is abutted against the sealing piece, medium cannot leak from the joint of the valve cover and the support due to the fact that the top is pressed upwards, the valve plug and the valve core are tightly connected when the valve is closed, the medium blocking effect is better, the sealing effect of the valve body is greatly enhanced, and the valve is suitable for circulation of various gas mediums;

(3) Through being provided with inserted bar, jack, when the valve rod rotation is in place, with inserted bar to jack interpolation tight, make the valve rod unable pine take off, avoid the valve rod to rotate the pine because of long-term use and take off, avoid the valve body because of the condition that the valve is not in place of closing, stopped manual switch valve leakage problem.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic diagram of an elevation structure of an I-shaped groove according to the present utility model;

FIG. 3 is an enlarged partial cross-sectional view of the structure of FIG. 1A according to the present utility model;

fig. 4 is a schematic elevational view of the valve stem of the present utility model.

In the figure: 1. a rotating handle; 2. a jack; 3. a top cover; 4. a rod; 5. a valve cover; 6. a diaphragm sheet; 7. a valve plug; 8. a sealing sheet; 9. a flow passage; 10. a valve body; 11. a bracket; 12. a valve seat; 13. a base; 14. a connecting flange; 15. a valve core; 16. a thread groove; 17. a spring; 18. a chute; 19. a limiting piece; 20. a valve stem; 21. an I-shaped groove; 22. a mounting groove; 23. installing a bolt; 24. and (5) sealing the bolts.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: referring to fig. 1-4, a high vacuum diaphragm valve with a easily detachable diaphragm comprises a valve body 10 and a valve cover 5, wherein the top end of the valve body 10 is provided with the valve cover 5, the bottom end of the valve body 10 is provided with a valve seat 12, the inside of the valve body 10 is provided with a flow passage 9, the outlet and inlet of the flow passage 9 is provided with a connecting flange 14, the top end of the valve cover 5 is provided with a top cover 3, the bottom end of the top cover 3 is provided with a thread groove 16, a valve rod 20 is connected in the thread groove 16 through threads, the bottom end of the valve rod 20 is provided with a diaphragm 6, two sides of the bottom of the inner wall of the valve cover 5 are respectively provided with a mounting groove 22, two sides of the diaphragm 6 are respectively embedded into the mounting grooves 22, the outside of the valve cover 5 is provided with a mounting bolt 23, the diaphragm 6 is assembled and fixed with the mounting groove 22 through the mounting bolts 24, the flow passage 9 is integrally welded with a sealing piece 8 above the inner wall of the outlet and the inlet, the sealing piece 8 is assembled and the valve cover 5 are fixed through the sealing bolts 24, the top end of the diaphragm 6 is fixedly connected with an i-shaped groove 21, and the bottom end of the valve rod 20 is embedded into the i-shaped groove 21 and can rotate relatively;

specifically, as shown in fig. 1, 2, 3 and 4, the top of the diaphragm 6 is movably connected with the valve rod 20 by adopting the i-shaped groove 21, when the valve rod 20 pushes the i-shaped groove 21 to press down the diaphragm 6, the diaphragm 6 cannot be extruded and deformed due to relative rotation, when the diaphragm 6 needs to be detached and replaced, the sealing bolts 24 are opened from two external sides, the valve cover 5 is detached from the valve body 10, the mounting bolts 23 are detached, the diaphragm 6 is pulled out of the mounting groove 22 by force, the function of quickly replacing the diaphragm 6 is realized, and the later maintenance cost is reduced.

Example 2: the bottom end of the diaphragm 6 is fixedly connected with a valve plug 15, the bottom end of the flow channel 9 is provided with a valve plug 7, and the valve plug 15 is matched with the valve plug 7;

specifically, as shown in fig. 1, 2 and 3, two sides of the diaphragm 6 are embedded in the mounting groove 22 of the valve cover 5 and are in compression connection through the mounting bolts 23, the part of the bottom of the diaphragm 6 in the runner 9 is abutted against the sealing sheet 8, when medium in the runner 9 flows, the medium cannot leak from the joint of the valve cover 5 and the bracket 11 due to the upward pushing, so that the external tightness is ensured, in addition, the valve plug 7 and the valve core 15 are in embedded matching, the connection is tight when the valve is closed, the medium blocking effect is better, the internal tightness of the whole diaphragm 6 is enhanced, the sealing effect of the valve body 10 is greatly enhanced, and the diaphragm is suitable for the flow of various gas mediums.

Example 3: the top end of the valve rod 20 is fixedly connected with the rotating handle 1, the outside of the valve rod 20 is movably sleeved with the spring 17, the left side of the valve rod 20 is provided with the jack 2, the left side of the top cover 3 is inserted with the inserting rod 4, the outside of the valve rod 20 is fixedly sleeved with the limiting piece 19, the two sides of the inner wall of the top cover 3 are respectively provided with the sliding groove 18, the two sides of the limiting piece 19 are respectively embedded in the sliding groove 18, the two sides of the bottom end of the valve seat 12 are fixedly connected with the support 11, and the bottom end of the support 11 is integrally welded with the base 13;

specifically, as shown in fig. 1, 2 and 4, when the rotary handle 1 is rotated to close the valve, the valve rod 20 pushes the diaphragm 6 downwards to close the flow channel 9, when the valve rod 20 is rotated in place, the valve core 15 and the valve plug 7 are tightly closed to block flow, and at the moment, the inserting rod 4 is inserted into the inserting hole 2 to enable the valve rod 20 to be unable to be loosened, so that the valve rod 20 is prevented from rotating and loosening due to long-term use, the condition that the valve body 10 is not closed in place is avoided, and the problem of leakage of a manual switch valve is avoided.

Working principle: when the valve is used, the valve body 10 is connected with a left pipeline and a right pipeline through the connecting flange 14, the base 13 is rotatably installed or the base 13 is not installed, the diaphragm 6 is in a high position when the valve body 10 is in an open state, the flow channel 9 is communicated left and right, the rotating handle 1 is rotated, the valve rod 20 is pushed downwards under the action of the threaded groove 16, the diaphragm 6 is continuously close to the valve plug 7 until the valve core 15 is tightly embedded with the valve plug 7 to close the flow channel 9, at the moment, the valve is closed, the valve rod 20 is rotated in place, the inserting rod 4 is inserted into the inserting hole 2, the valve rod 20 cannot be loosened, the safe limit of the valve can be finished, when the new diaphragm 6 needs to be detached, the sealing bolts 24 are opened from two sides outside, the valve cover 5 is detached from the valve body 10, the mounting bolts 23 are detached, and the diaphragm 6 is forcefully pulled out of the mounting groove 22.

Claims

1. The utility model provides a high vacuum diaphragm valve of diaphragm easy tear open, includes valve body (10) and valve gap (5), its characterized in that: valve gap (5) are installed on the top of valve body (10), the bottom of valve body (10) is provided with disk seat (12), valve body (10) inside is provided with runner (9), flange (14) are installed in export and entrance to runner (9), top cap (3) are installed on the top of valve gap (5), screw thread groove (16) have been seted up to top cap (3) bottom, there is valve rod (20) in screw thread groove (16) through threaded connection, diaphragm piece (6) are installed to the bottom of valve rod (20), mounting groove (22) have been seted up respectively to the both sides of valve gap (5) inner wall bottom.

2. The high vacuum diaphragm valve with a readily removable diaphragm as defined in claim 1, wherein: the utility model discloses a diaphragm valve, including diaphragm piece (6), valve gap (5), sealing bolt (24) are all equipped with in both sides of diaphragm piece (6), inside embedded mounting groove (22) respectively, valve gap (5) are at externally mounted has mounting bolt (23), diaphragm piece (6) are fixed with mounting groove (22) assembly through mounting bolt (23), both sides of valve gap (5) bottom all are equipped with sealing bolt (24), runner (9) are in export and the integrative welding of entry inner wall top have sealing piece (8), sealing piece (8) are fixed through sealing bolt (24) assembly with valve gap (5).

3. The high vacuum diaphragm valve with a readily removable diaphragm as defined in claim 1, wherein: the bottom fixedly connected with case (15) of diaphragm (6), the bottom of runner (9) is provided with valve plug (7), case (15) and valve plug (7) assorted.

4. The high vacuum diaphragm valve with a readily removable diaphragm as defined in claim 1, wherein: the top end of the diaphragm (6) is fixedly connected with an I-shaped groove (21), and the bottom end of the valve rod (20) is embedded into the I-shaped groove (21) and can rotate relatively.

5. The high vacuum diaphragm valve with a readily removable diaphragm as defined in claim 1, wherein: the novel valve is characterized in that the rotating handle (1) is fixedly connected to the top end of the valve rod (20), the spring (17) is movably sleeved outside the valve rod (20), the jack (2) is formed in the left side of the valve rod (20), the inserting rod (4) is inserted in the left side of the top cover (3), the limiting piece (19) is fixedly sleeved outside the valve rod (20), the sliding grooves (18) are formed in the two sides of the inner wall of the top cover (3) respectively, and the two sides of the limiting piece (19) are embedded in the sliding grooves (18) respectively.

6. The high vacuum diaphragm valve with a readily removable diaphragm as defined in claim 1, wherein: both sides of disk seat (12) bottom all fixedly connected with support (11), the bottom of support (11) is integrative to be welded with base (13).