CN218971889U - A High Vacuum Diaphragm Valve with Detachable Diaphragm - Google Patents

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

A High Vacuum Diaphragm Valve with Detachable Diaphragm

technical field

The utility model relates to the technical field of diaphragm valves, in particular to a high-vacuum diaphragm valve whose diaphragm is easy to disassemble.

Background technique

The basic principle of the vacuum diaphragm valve is to press the diaphragm (valve) down through the valve stem to close the flow channel, thereby blocking the flow of the medium, and is mainly used for the opening and closing and control of non-corrosive high-pressure gases.

According to the application number CN202123182688.4, a metal diaphragm valve for high-pressure fluid control is disclosed. The above-mentioned metal diaphragm valve includes a valve casing, a bonnet arranged on the valve casing, an opening and closing structure arranged in the bonnet, a diaphragm arranged between the bonnet and the valve casing, installed on Reinforcement components and orientation components on the valve housing. The reinforcement assembly is used to strengthen and seal the placement of the diaphragm, which includes two sets of diaphragm grooves opened at the position where the valve housing faces the valve cover, and two sets of diaphragm grooves welded at the position where the valve cover faces the valve housing. Group pressure plate. The orientation component includes a fitting groove opened on the diaphragm, and a sealing layer arranged in the fitting groove. The metal diaphragm valve of the utility model has high air tightness, so that the air resistance of the metal diaphragm valve in the opening and closing process is small, and the displacement of the diaphragm can be prevented, and the operation is labor-saving during use. The sealing effect of the metal diaphragm valve is excellent when the diaphragm is closed, thus preventing the diaphragm from being washed away by the high-pressure fluid.

The diaphragm in the above technical solution maintains a good sealing effect. Once the valve casing and valve cover are disassembled to replace the diaphragm, the sealing performance will easily fail. Therefore, the diaphragm is essentially not allowed to be disassembled multiple times to avoid airtight failure. , However, this increases the cost of replacement and maintenance in the later period. Once the diaphragm is damaged, the entire valve body can only be replaced.

In view of this, we propose a high-vacuum diaphragm valve with an easy-to-remove diaphragm, which can be repeatedly disassembled and replaced with a new diaphragm while maintaining high sealing performance.

Contents of the invention

The purpose of this utility model is to provide a high-vacuum diaphragm valve whose diaphragm is easy to disassemble, so as to solve the problem of inconvenient disassembly and replacement of the diaphragm proposed in the background art.

In order to achieve the above purpose, the utility model provides the following technical solutions: a high vacuum diaphragm valve with easily disassembled diaphragm, including a valve body and a valve cover, the top end of the valve body is equipped with a valve cover, and the bottom end of the valve body A valve seat is provided, a flow channel is provided inside the valve body, and connecting flanges are installed on the outlet and the inlet of the flow channel, a top cover is installed on the top end of the valve cover, and a thread is provided at the bottom end of the top cover. A valve stem is threadedly connected in the threaded groove, a diaphragm is installed at the bottom end of the valve stem, and installation grooves are respectively opened on both sides of the bottom of the inner wall of the valve cover.

Preferably, both sides of the diaphragm are respectively embedded in the installation groove, and the valve cover is equipped with mounting bolts on the outside, the diaphragm is assembled and fixed with the installation groove through the installation bolts, and both sides of the bottom of the valve cover are assembled There are sealing bolts, the flow channel is integrally welded with a sealing sheet above the inner wall of the outlet and the inlet, and the sealing sheet and the valve cover are assembled and fixed by sealing bolts.

Preferably, the bottom end of the diaphragm is fixedly connected with a valve core, the bottom end of the flow channel is provided with a valve plug, and the valve core is matched with the valve plug.

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

Preferably, the top end of the valve stem is fixedly connected with a handle, the outside of the valve stem is movably sleeved with a spring, the left side of the valve stem is provided with a socket, and the left side of the top cover is plugged with a socket. The outside of the valve stem is fixedly sleeved with a limiting piece, and the two sides of the inner wall of the top cover are respectively provided with slide grooves, and the two sides of the limiting piece are respectively embedded in the sliding groove.

Preferably, both sides of the bottom end of the valve seat are fixedly connected with a bracket, and the bottom end of the bracket is integrally welded with a base.

Compared with the prior art, the beneficial effect of the utility model is that the high vacuum diaphragm valve with easy-to-remove diaphragm not only realizes the rapid replacement of the diaphragm, but also realizes good sealing effect, is suitable for the circulation of various gas media, and realizes In order to eliminate the problem of leakage caused by the manual switch valve not being in place;

(1) When installing bolts, diaphragms, valve covers, installation grooves, sealing sheets, and I-shaped grooves are installed, when a new diaphragm needs to be removed and replaced, the sealing bolts are opened from both sides of the outside, and the valve cover is removed from the valve body first. Disassemble it, then remove the mounting bolts, and pull out the diaphragm from the installation groove to realize the function of quickly replacing the diaphragm without replacing the entire diaphragm valve, which reduces the maintenance cost in the later stage;

(2) With the sealing sheet, sealing bolt, mounting bolt, and sealing sheet, the part of the bottom of the diaphragm inside the flow channel is tightly pressed against the sealing sheet, so that the medium will not leak from the connection between the valve cover and the bracket due to the upper top. The valve plug and the valve core are tightly connected when the valve is closed, and the medium blocking effect is better, which greatly enhances the sealing effect of the valve body itself, and is suitable for the circulation of various gas media;

(3) When the valve stem is rotated in place, insert the insertion rod into the socket tightly so that the valve stem cannot be loosened by setting the insertion rod and the socket, so as to prevent the valve stem from rotating and loosening due to long-term use and prevent the valve body from being loose. Due to the inadequacy of the closed valve, the leakage problem of the manual switch valve is eliminated.

Description of drawings

Fig. 1 is the front view sectional structure schematic diagram of the utility model;

Fig. 2 is the schematic diagram of the front view structure of the I-shaped groove of the utility model;

Fig. 3 is a schematic diagram of a partial section enlarged structure at A in Fig. 1 of the present utility model;

Fig. 4 is a front view structural diagram of the valve stem of the present invention.

In the figure: 1. Turn handle; 2. Jack; 3. Top cover; 4. Insert rod; 5. Valve cover; 6. Diaphragm; 7. Valve plug; 8. Sealing piece; 9. Runner; 10. Valve body; 11, bracket; 12, valve seat; 13, base; 14, connecting flange; 15, valve core; 16, thread groove; 17, spring; 18, chute; 19, limit piece; 20, valve Rod; 21, I-shaped groove; 22, installation groove; 23, installation bolt; 24, sealing bolt.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment 1: Please refer to Figures 1-4, a high vacuum diaphragm valve with an easily disassembled diaphragm, including a valve body 10 and a valve cover 5, the top end of the valve body 10 is equipped with a valve cover 5, and the bottom end of the valve body 10 is set There is a valve seat 12, a flow channel 9 is arranged inside the valve body 10, a connecting flange 14 is installed at the outlet and the inlet of the flow channel 9, a top cover 3 is installed on the top of the valve cover 5, and a thread groove is opened at the bottom of the top cover 3 16. The threaded groove 16 is threadedly connected with the valve stem 20, the bottom end of the valve stem 20 is installed with a diaphragm 6, the two sides of the bottom of the inner wall of the bonnet 5 are respectively provided with installation grooves 22, and the two sides of the diaphragm 6 are embedded and installed respectively. Inside the groove 22, the valve cover 5 is installed with mounting bolts 23 on the outside, and the diaphragm 6 is assembled and fixed with the mounting groove 22 through the mounting bolts 23. Both sides of the bottom of the valve cover 5 are equipped with sealing bolts 24, and the flow channel 9 is connected between the outlet and the inlet. The top of the inner wall is integrally welded with a sealing piece 8, the sealing piece 8 and the valve cover 5 are assembled and fixed by the sealing bolt 24, the top of the diaphragm 6 is fixedly connected with the I-shaped groove 21, and the bottom end of the valve stem 20 is embedded in the inside of the I-shaped groove 21 and can be opposite to each other. turn;

Specifically, as shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the top of the diaphragm 6 is movably connected with the valve stem 20 by means of an I-shaped groove 21, and when the valve stem 20 pushes the I-shaped groove 21 to press down the diaphragm 6, The diaphragm 6 will not be squeezed and deformed due to relative rotation. When it is necessary to disassemble and replace a new diaphragm 6, open the sealing bolts 24 from both sides of the outside, first disassemble the valve cover 5 from the valve body 10, and then disassemble and install it. Bolts 23, the diaphragm 6 can be forcibly pulled out from the installation groove 22, realizing the function of quickly replacing the diaphragm 6, and reducing the later maintenance cost.

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

Specifically, as shown in Fig. 1, Fig. 2 and Fig. 3, both sides of the diaphragm 6 are embedded in the installation groove 22 of the valve cover 5, and are pressed and connected by the installation bolt 23, and the part whose bottom is inside the flow channel 9 Press against the sealing piece 8, when the medium in the flow channel 9 flows, the medium will not leak from the connection between the valve cover 5 and the bracket 11 due to the top, ensuring the external sealing. In addition, the valve plug 7 and the valve core are used 15 Fitting matching, the connection is tight when the valve is closed, the medium blocking effect is better, the internal sealing performance of the entire diaphragm 6 is enhanced, and the sealing effect of the valve body 10 itself is greatly enhanced, which is suitable for the circulation of various gas media.

Embodiment 3: The top of the valve stem 20 is fixedly connected with the handle 1, the outer movable sleeve of the valve stem 20 is provided with a spring 17, the left side of the valve stem 20 is provided with a socket 2, and the left side of the top cover 3 is plugged with a socket Rod 4, the outside of valve stem 20 is fixedly sleeved with limiting piece 19, and both sides of the inner wall of top cover 3 are respectively provided with chute 18, and the two sides of limiting piece 19 are respectively embedded in the inside of chute 18, and the two sides of the bottom end of valve seat 12 Both sides are fixedly connected with a bracket 11, and the bottom end of the bracket 11 is integrally welded with a base 13;

Specifically, as shown in Fig. 1, Fig. 2 and Fig. 4, when the handle 1 is turned to close the valve, the valve stem 20 pushes down the diaphragm 6 to close the flow passage 9, and when the valve stem 20 rotates in place, the valve core 15 and The valve plug 7 is tightly closed to block the flow. At this time, insert the insertion rod 4 into the socket 2 tightly so that the valve rod 20 cannot be loosened, thereby preventing the valve rod 20 from rotating and loosening due to long-term use, and preventing the valve body 10 from being closed due to If the valve is not in place, the leakage problem of the manual switch valve is eliminated.

Working principle: When the utility model is in use, the valve body 10 is connected to the left and right pipelines through the connecting flange 14, and the base 13 can be installed rotatably or without the base 13. When the valve body 10 is in the open state, the diaphragm 6 is at a high position, and the flow channel 9 Left and right communication, when it is necessary to close the valve body 10, turn the handle 1, the valve stem 20 is pushed down under the action of the thread groove 16, and the diaphragm 6 is constantly approaching the valve plug 7 until the valve core 15 and the valve plug 7 are tightly fitted to close the flow. Road 9, the valve is closed at this time, the valve stem 20 is rotated in place, insert the insertion rod 4 into the socket 2 tightly so that the valve stem 20 cannot be loosened, and the safety limit of the valve can be completed, and a new diaphragm needs to be disassembled and replaced At 6 o'clock, open the sealing bolts 24 from both sides of the outside, first disassemble the valve cover 5 from the valve body 10, then remove the mounting bolts 23, and pull out the diaphragm 6 from the mounting groove 22 forcibly.

Claims (6)

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).

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