CN220354529U

CN220354529U - Straight-through diaphragm valve

Info

Publication number: CN220354529U
Application number: CN202321572278.7U
Authority: CN
Inventors: 陈超然; 潘艳
Original assignee: Zhejiang Five Valve Group Co ltd
Current assignee: Zhejiang Five Valve Group Co ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2024-01-16
Anticipated expiration: 2033-06-19

Abstract

The utility model provides a straight-through diaphragm valve, includes valve body, valve gap, valve clack, valve rod and diaphragm, be equipped with the runner in the valve body, the valve gap is installed in valve body upper portion, and the diaphragm presss from both sides and establishes between the valve gap, makes valve gap inner chamber and valve body inner chamber cut off, the valve rod runs through and sets up on the valve gap to valve gap inner and valve rod threaded connection, the valve rod drives the valve clack and descends and realize the shutoff of runner with the diaphragm impressing in the runner, the valve clack includes first valve clack part and second valve clack part, first valve clack part and second valve clack part are installed in the valve rod both sides through the mode of joggle. The utility model aims to provide a straight-through diaphragm valve, wherein a valve rod is connected with a valve clack in a joggle mode, so that the connection between the valve rod and the valve clack is prevented from becoming loose, and the sealing performance of the valve is improved when the valve is closed.

Description

Straight-through diaphragm valve

Technical Field

The utility model relates to the technical field of valves, in particular to a straight-through diaphragm valve.

Background

The diaphragm valve is a stop valve which uses diaphragm as opening and closing piece to seal flow channel and cut off fluid and separates the valve body cavity and valve cover cavity, the diaphragm is made of elastic, corrosion-resistant and non-permeable materials such as rubber, plastic, etc., the valve body is made of plastic, glass fiber reinforced plastic, ceramic or metal rubber lining material, the structure is simple, the sealing and corrosion-resistant performance is good, the fluid resistance is small, the valve is used for medium with low pressure, low temperature, strong corrosiveness and containing suspended substances, and the valve is divided into ridge type, stop type, straight-through type, etc. according to the structure form.

In the use process of the diaphragm valve, the diaphragm valve drives the valve clack to move up and down through the valve rod, so that the sealing film clung to the valve clack moves up and down, and the two pipelines are plugged. The valve rod is connected with the valve clack through threads, and in long-term use, the threaded connection of the valve rod and the valve clack is easy to loosen or shift due to friction, so that the sealing performance is reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the straight-through diaphragm valve, which connects the valve rod with the valve clack in a joggle way, so as to prevent the connection between the valve rod and the valve clack from becoming loose, and further improve the sealing performance when the valve is closed.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a straight-through diaphragm valve, includes valve body, valve gap, valve rod, valve clack and diaphragm, be equipped with the runner in the valve body, the valve gap is installed in valve body upper portion, and the diaphragm presss from both sides and establishes between the valve gap, makes valve gap inner chamber and valve body inner chamber cut off, the valve rod runs through and sets up on the valve gap to valve gap inner and valve rod threaded connection, valve rod drive the valve clack decline and with the diaphragm realization in the runner of impressing the shutoff of runner, the valve clack includes first valve clack part and second valve clack part, first valve clack part and second valve clack part pass through the mode of joggle and install in the valve rod both sides.

Through adopting above-mentioned technical scheme, adopt the mode of joggle to connect valve rod and valve clack, can take place lax or the problem of displacement when having solved the adoption threaded connection, and then make the cooperation structure between valve rod and the valve clack become more reliable, and use for a long time more stable, firm and accurate.

The utility model is further provided with: the first valve clack part on be provided with first connection lug and first connection recess, all be provided with second connection lug and second connection recess on the second valve clack part, first connection lug cooperatees with the second connection recess, the second connection lug cooperatees with the first connection recess.

By adopting the technical scheme, the connection lug is matched with the connection groove to realize joggling, so that durability and stability are guaranteed.

The utility model is further provided with: the valve rod on run through and be provided with the mounting groove, first connection lug and second connection lug run through the mounting groove.

By adopting the technical scheme, the valve clack and the valve clack are connected into a whole, so that the connection between the valve rod and the valve clack is more stable, and the cooperation is more reliable.

The utility model is further provided with: the first valve clack part and the second valve clack part are provided with connecting holes on one side far away from the connecting convex blocks, and the first valve clack part and the second valve clack part are installed on two sides of the valve rod through installing fasteners on the connecting holes.

Through adopting above-mentioned technical scheme, connect the valve rod through the joggle in one side of valve clack part, ensure the linkage of valve rod and valve clack, set up the connecting hole in the opposite side for connect more stably, be difficult for not hard up.

The utility model is further provided with: the valve rod on one end that keeps away from the valve clack still linkage install the hand wheel, valve rod and valve gap pass through threaded connection.

Through adopting above-mentioned technical scheme, install the hand wheel on the valve rod linkage, easy user control valve rod goes up and down.

The utility model is further provided with: the valve rod is also sleeved with a spring, and a gasket is respectively clamped between the spring and the hand wheel and between the spring and the valve cover.

Through adopting above-mentioned technical scheme, establish the spring through the cover between hand wheel and valve gap, when the hand wheel rotates, because the user receives the power that offsets, can suitably increase the dynamics and weaken the rotation rate of valve rod, and then weaken the speed that the valve rod descends for the pressure that the diaphragm received slowly increases, has avoided rotating the hand wheel fast and has led to the diaphragm to receive too big pressure and then damaged problem.

The utility model is further provided with: and the valve rod is also provided with a limit bolt for limiting the hand wheel.

By adopting the technical scheme, the hand wheels are limited, and the hand wheels are prevented from being separated from the valve rod.

The utility model is further provided with: the valve cover is also provided with a balance hole which communicates the inner cavity of the valve cover with the outside.

Through adopting above-mentioned technical scheme, balanced valve gap inner chamber and external atmospheric pressure for the hand wheel rotates required strength reduction, reduces user's the operation degree of difficulty.

The utility model is further provided with: and the inner surface of the valve body is provided with a fluorine lining layer.

Through adopting above-mentioned technical scheme, through the lining fluorine layer of installation, increase the corrosion resistance of valve body.

The utility model is further provided with: and a rubber flat pad connected through glue is further arranged between the diaphragm and the end face of the valve clack.

By adopting the technical scheme, the rubber flat pad is arranged between the diaphragm and the valve clack, so that the diaphragm is protected from being worn due to uneven surface of the valve clack.

Drawings

FIG. 1 is a schematic illustration of a specific construction of a straight-through diaphragm valve of the present utility model;

FIG. 2 is a schematic diagram of a specific structure of a valve flap;

fig. 3 is a schematic illustration of a specific structure of a valve stem.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve flap; 4. a valve stem; 5. a diaphragm; 6. a flow passage; 7. a hand wheel; 8. a gasket; 9. a spring; 10. a fluorine-lined layer; 21. a balance hole; 31. a first valve flap member; 32. a second valve flap member; 33. a first connection bump; 34. a first connection groove; 35. a second connection bump; 36. a second connection groove; 37. a connection hole; 38. a rubber flat pad; 41. a mounting groove; 71. and a limit bolt.

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.

In the description of the present utility model, it should be understood that the terms "length," "width," "thickness," "inner," "outer," "axial," "radial," "circumferential," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model discloses a straight-through diaphragm valve, which comprises a valve body 1, a valve cover 2, a valve rod 4, a valve clack 3 and a diaphragm 5, wherein a flow passage 6 is arranged in the valve body 1, the valve cover 2 is arranged at the upper part of the valve body 1, the diaphragm 5 is clamped between the valve cover 2 to separate an inner cavity of the valve cover 2 from an inner cavity of the valve body 1, the valve rod 4 is arranged on the valve cover 2 in a penetrating manner, the inner end of the valve rod 4 is in threaded connection with the valve clack 3, the valve rod 4 drives the valve clack 3 to descend and presses the diaphragm 5 into the flow passage 6 to block the flow passage 6, the valve clack 3 comprises a first valve clack part 31 and a second valve clack part 32, and the first valve clack part 31 and the second valve clack part 32 are arranged at two sides of the valve rod 4 in a joggle joint manner.

The first valve clack 3 is provided with a first connection lug 33 and a first connection groove 34, the second valve clack 32 is provided with a second connection lug 35 and a second connection groove 36, the first connection lug 33 is matched with the second connection groove 36, and the second connection lug 35 is matched with the first connection groove 34.

The valve rod 4 is provided with a mounting groove 41 in a penetrating manner, and the first connecting projection 33 and the second connecting projection 35 penetrate through the mounting groove 41. The mounting groove 41 is equal in size to the sum of the first connection protrusion 33 and the second connection protrusion 35.

The first and second flap members 31, 32 are provided with attachment holes 37 at a side remote from the attachment projections, and the first and second flap members 31, 32 are mounted on both sides of the valve stem 4 by mounting fasteners at the attachment holes 37. The attachment holes 37 are used to secure fasteners, which may be bolts or pins, to the valve stem 4.

Through the structure, the valve clack 3 is arranged on two sides of the valve rod 4, one end of the valve rod 4 is wrapped by the valve clack 3, the valve clack 3 is fixed outside through a fastener, the valve clack 3 and the valve rod 4 are reliably connected through the through connection lug joggle joint, the problem that threads can be loosened is directly avoided, the joggle joint connection mode is very simple, and only two valve clack 3 components are needed to be sequentially arranged on the valve rod 4. After the valve clack 3 and the valve rod 4 are connected into a whole, the up-and-down movement of the valve clack 3 and the valve rod 4 becomes quicker, the reaction is quicker, and the timely opening and closing efficiency is ensured.

And a hand wheel 7 is also installed on one end, far away from the valve clack 3, of the valve rod 4 in a linkage way, and the valve rod 4 is connected with the valve cover 2 through threads. The valve rod 4 is also sleeved with a spring 9, and a gasket 8 is respectively clamped between the spring and the hand wheel and between the spring and the valve cover. And the valve rod 4 is also provided with a limit bolt 71 for limiting the hand wheel 7, and the limit bolt 71 is radially arranged on the valve rod. The valve rod 4 and the hand wheel 7 can be connected in a keyed manner or in a threaded manner. The valve rod 4 is in threaded connection with the valve cover 2, and the gaskets 8 are respectively arranged on the upper side and the lower side of the spring 9 to prevent the spring 9 from being damaged by friction. The spring 9 allows the user to receive upward resistance when rotating the hand wheel 7, so that the user does not need to apply excessive force, and the situation that the diaphragm 5 is suddenly damaged due to excessive force caused by the rapid rotation of the hand wheel 7 by the user is prevented.

The valve cover 2 is also provided with a balance hole 21 which communicates the inner cavity of the valve cover 2 with the outside. The inner cavity of the valve cover 2 is balanced with the external air pressure, so that the hand wheel 7 is not too difficult to rotate, and the opening and closing rapidity is ensured.

The inner surface of the valve body 1 is provided with a fluorine lining layer 10. The fluorine-lined layer 10 may be made of a fluoroplastic such as polytetrafluoroethylene. The fluorine-lined layer 10 may be attached to the interior by glue. The valve body 1 on, still be provided with the inclined plane that carries out spacing to valve clack 3, this inclined plane makes the unable unlimited downward movement of valve clack 3, has protected diaphragm 5 can not be pricked by valve clack 3. The inclined plane is also beneficial to the installation of the fluorine lining layer 10, and the inclined plane ensures that the fluorine lining layer 10 cannot wrinkle during the installation.

A rubber flat pad 38 connected by glue is also arranged between the diaphragm 5 and the valve clack 3. When the valve clack 3 is not well done, the valve clack 3 is preferentially connected with the rubber flat pad 38, so that uneven convex particles on the valve clack 3 are ensured not to damage the diaphragm 5, and the service life of the diaphragm 5 is prolonged.

In summary, the utility model solves the problem of loosening of threads, and further ensures that the diaphragm 5 is uniformly stressed and cannot be worn due to other structures.

Claims

1. The utility model provides a straight-through diaphragm valve, includes valve body (1), valve gap (2), valve clack (3), valve rod (4) and diaphragm (5), be equipped with runner (6) in valve body (1), valve gap (2) are installed in valve body (1) upper portion, and diaphragm (5) clamp are established between valve gap (2), make valve gap (2) inner chamber and valve body (1) inner chamber separate, valve rod (4) run through the setting on valve gap (2) to valve gap (2) inner and valve rod (4) threaded connection, valve rod (4) drive valve clack (3) decline and with diaphragm (5) indentation runner (6) in realize the shutoff of runner (6), its characterized in that: the valve clack (3) comprises a first valve clack part (31) and a second valve clack part (32), and the first valve clack part (31) and the second valve clack part (32) are arranged on two sides of the valve rod (4) in a joggle joint mode.

2. A straight-through diaphragm valve according to claim 1, characterized in that: the valve comprises a first valve clack part (31) and a second valve clack part (32), wherein a first connecting lug (33) and a first connecting groove (34) are arranged on the first valve clack part, a second connecting lug (35) and a second connecting groove (36) are arranged on the second valve clack part (32), the first connecting lug (33) is matched with the second connecting groove (36), and the second connecting lug (35) is matched with the first connecting groove (34).

3. A straight-through diaphragm valve according to claim 2, characterized in that: the valve rod (4) is provided with a mounting groove (41) in a penetrating mode, and the first connecting convex block (33) and the second connecting convex block (35) penetrate through the mounting groove (41).

4. A straight-through diaphragm valve according to claim 3, characterized in that: the first valve clack part (31) and the second valve clack part (32) are provided with connecting holes (37) at one side far away from the connecting convex blocks, and the first valve clack part (31) and the second valve clack part (32) are arranged at two sides of the valve rod (4) through installing fasteners at the connecting holes (37).

5. A straight-through diaphragm valve according to claim 1, characterized in that: and a hand wheel (7) is also installed on one end, far away from the valve clack (3), of the valve rod (4) in a linkage way, and the valve rod (4) is connected with the valve cover (2) through threads.

6. A straight-through diaphragm valve according to claim 5, characterized in that: the valve rod (4) is also sleeved with a spring (9), and a gasket (8) is respectively clamped between the spring and the hand wheel and between the spring and the valve cover.

7. A straight-through diaphragm valve according to claim 6, characterized in that: and a limit bolt (71) for limiting the hand wheel (7) is further arranged on the valve rod (4).

8. A straight-through diaphragm valve according to claim 7, characterized in that: the valve cover (2) is also provided with a balance hole (21) which communicates the inner cavity of the valve cover with the outside.

9. A straight-through diaphragm valve according to claim 8, characterized in that: the inner surface of the valve body (1) is provided with a fluorine lining layer (10).

10. A straight-through diaphragm valve according to claim 9, characterized in that: the lower end face of the valve clack is also connected with a rubber flat pad (38) through glue.