CN220551516U

CN220551516U - Leakage-proof structure of valve

Info

Publication number: CN220551516U
Application number: CN202321324432.9U
Authority: CN
Inventors: 周炜
Original assignee: Binhai Salt Electric Machinery Manufacturing Co ltd
Current assignee: Binhai Salt Electric Machinery Manufacturing Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2024-03-01
Anticipated expiration: 2033-05-29

Abstract

The utility model relates to a leakage-proof structure of a valve, which comprises a valve body, wherein a valve head is fixedly arranged on the top end surface of the valve body, first connecting flanges are arranged on the left side and the right side of the valve body, connecting pipelines are communicated with one sides of the two first connecting flanges, which are opposite, a leakage-proof component is arranged on the upper surface of the valve head, and a sealing component is arranged on the left side of the valve body. This leak protection structure of valve has set up the leak protection subassembly in the leak protection structure of this valve, through setting up lead screw, sealing block, sealing ring, valve handle, control valve and control plug, has realized the purpose of controlling this valve switch, has improved sealing performance of sealing block and control valve junction, has solved in the use of valve, and the gap can appear in the control part of valve and valve center central line department, and then can lead to the condition emergence of valve weeping, has reduced the sealing performance of valve, has influenced the problem of the normal use of valve.

Description

Leakage-proof structure of valve

Technical Field

The utility model relates to the technical field of valves, in particular to a leakage-proof structure of a valve.

Background

The valve is a pipeline accessory for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters of a conveying medium, can be divided into a shutoff valve, a check valve, a regulating valve and the like according to the functions, is a control part in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflow pressure relief and the like, is used for various valves in the fluid control system, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive mediums, slurry, oil products, liquid metal, radioactive mediums and the like from the simplest stopping valve to the extremely complex automatic control system, and the valve can be used for controlling the flow of various types of fluids such as cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard customized valves and the like according to the materials.

In chinese patent CN204592343U, a middle screw thread valve is disclosed, it includes valve body, flashboard, valve gap and the middle mouth cushion that sets up in valve body upper end between valve gap and valve body, set up at valve gap upper end and have the packing box of inner spigot, set up the valve rod in packing box and valve gap, set up the packing gland of packing box upper end and set up the packing graphite between valve rod and packing box inner spigot, the flashboard is connected to the valve rod lower extreme, the middle mouth cushion is O type circle, has sealed effectual, long service life, convenient to use, compact structure and equipment convenience, is fit for extensive popularization.

The valve has the advantages of good sealing effect, long service life, convenient use, compact structure and convenient assembly, is suitable for large-scale popularization, but in the use process of the valve, a gap can appear between a control part of the valve and the center line of the valve, so that the condition of liquid leakage of the valve can be caused, the sealing performance of the valve is reduced, the normal use of the valve is influenced, and the leakage prevention structure of the valve is provided for solving the problem.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a leakage prevention structure of a valve, which has the advantage of preventing the valve from leakage, and solves the problems that in the use process of the valve, a gap is formed between a control part of the valve and the center line of the valve, so that the condition of liquid leakage of the valve is caused, the sealing performance of the valve is reduced, and the normal use of the valve is influenced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a leak protection structure of valve, includes the valve body, the top face fixed mounting of valve body has the valve head, the left and right sides of valve body all is provided with first flange, two the opposite one side of first flange all communicates there is the connecting tube, the upper surface of valve head is equipped with prevents leaking the subassembly, the left side of valve body is equipped with seal assembly;

the anti-leakage assembly comprises a screw rod which is in threaded connection with the upper surface of the valve head, a sealing block is rotationally connected to the bottom end surface of the screw rod through a bearing, a sealing ring is fixedly sleeved on the outer side of the sealing block, a valve handle is fixedly arranged on the top end surface of the screw rod, two control valves are fixedly arranged in the valve body, and control plugs are fixedly arranged on the opposite sides of the two control valves;

the sealing assembly comprises a second connecting flange fixed on the left side of the valve body, a fastening bolt is connected to the right side of the second connecting flange in a threaded mode, a sealing gasket is placed on the left side of the second connecting flange, and a threaded groove is formed in the left side of the first connecting flange.

Further, the two first connecting flanges are symmetrically distributed on the left side and the right side of the longitudinal central axis of the valve body, and the shape of each first connecting flange is a cylinder.

Further, a first threaded hole is formed in the upper surface of the valve head, and the first threaded hole is in threaded connection with the screw rod.

Further, one side of the control plug far away from the control valve is attached to the outer side of the sealing ring, and the shape of the sealing ring is a cylinder with hollow inside and missing upper surface and lower surface.

Further, the thread groove is in threaded connection with the fastening bolt, and a second threaded hole in threaded connection with the fastening bolt is formed in the left side of the second connecting flange.

Further, the number of the sealing assemblies is two, and the two sealing assemblies are symmetrically distributed on the left side and the right side of the longitudinal central axis of the valve body.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this leak-proof structure of valve has set up the leak-proof subassembly in the leak-proof structure of this valve, mutually supporting between each structure in the leak-proof subassembly through setting up lead screw, sealing block, sealing ring, valve handle, control valve and control stopper, realized the purpose of controlling this valve switch, improved sealing performance of sealing block and control valve junction, solved in the use of valve, the gap can appear in the control part of valve and valve center central line department, and then can lead to the condition emergence of valve weeping, reduced the sealing performance of valve, influenced the problem of the normal use of valve.

2. The anti-leakage structure of the valve is characterized in that a sealing assembly is arranged in the anti-leakage structure of the valve, and the valve body is combined with and separated from the first connecting flange through the mutual matching among the structures in the sealing assembly by arranging the second connecting flange, the fastening bolts, the sealing gaskets and the thread grooves, so that the sealing performance of the joint of the first connecting flange and the second connecting flange is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a leak prevention assembly of the present utility model;

FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 according to the present utility model;

FIG. 4 is a schematic view of a seal assembly of the present utility model;

fig. 5 is an enlarged schematic view of the structure B in fig. 4 according to the present utility model.

In the figure: 1 valve body, 2 valve heads, 3 first flange, 4 connecting pipes, 5 leak-proof components, 501 screw rods, 502 sealing blocks, 503 sealing rings, 504 valve handles, 505 control valves, 506 control plugs, 6 sealing components, 601 second flange, 602 fastening bolts, 603 sealing gaskets and 604 thread grooves.

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.

Referring to fig. 1, a leak-proof structure of a valve in this embodiment includes a valve body 1, a valve head 2 is fixedly mounted on a top end surface of the valve body 1, first connection flanges 3 are disposed on left and right sides of the valve body 1, one sides of the two first connection flanges 3 opposite to each other are respectively communicated with a connection pipe 4, a leak-proof assembly 5 is disposed on an upper surface of the valve head 2, and a sealing assembly 6 is disposed on a left side of the valve body 1.

The two first connecting flanges 3 are symmetrically distributed on the left side and the right side of the longitudinal central axis of the valve body 1, and the shape of the first connecting flanges 3 is a cylinder.

It should be noted that, the components of the present application are all general standard components or components known to those skilled in the art, and the structures and principles thereof are all known to those skilled in the art through technical manuals or through routine experimental methods.

Referring to fig. 2-3, in order to improve the sealing performance of the joint between the sealing block 502 and the control valve 505, the leak-proof assembly 5 in this embodiment includes a screw rod 501 screwed on the upper surface of the valve head 2, the bottom end surface of the screw rod 501 is rotatably connected with the sealing block 502 through a bearing, a sealing ring 503 is fixedly sleeved on the outer side of the sealing block 502, a valve handle 504 is fixed on the top end surface of the screw rod 501, two control valves 505 are fixed in the valve body 1, and control plugs 506 are fixed on opposite sides of the two control valves 505.

The upper surface of the valve head 2 is provided with a first threaded hole which is in threaded connection with the screw rod 501.

One side of the control plug 506 away from the control valve 505 is attached to the outer side of the sealing ring 503, the sealing ring 503 is a cylinder with hollow inside and missing upper and lower surfaces, and the sealing ring 503 plays a role in improving the sealing performance of the joint of the sealing block 502 and the control valve 505.

Referring to fig. 4-5, in order to improve the sealing performance of the joint between the first connecting flange 3 and the second connecting flange 601, the sealing assembly 6 in this embodiment includes the second connecting flange 601 fixed on the left side of the valve body 1, the right side of the second connecting flange 601 is screwed with a fastening bolt 602, the left side of the second connecting flange 601 is provided with a sealing gasket 603, the sealing gasket 603 plays a role in improving the sealing performance of the joint between the first connecting flange 3 and the second connecting flange 601, and the left side of the first connecting flange 3 on the left side is provided with a thread groove 604.

The screw groove 604 is screw-coupled with the fastening bolt 602, and a second screw hole screw-coupled with the fastening bolt 602 is opened at the left side of the second connection flange 601.

The number of the sealing assemblies 6 is two, and the two sealing assemblies 6 are symmetrically distributed on the left side and the right side of the longitudinal central axis of the valve body 1.

Standard parts used in the method can be purchased from the market, special-shaped parts can be customized according to description of specifications and drawings, specific connection modes of the parts are conventional means such as mature bolts, rivets and welding in the prior art, machines, parts and equipment are conventional in the prior art, and circuit connection is conventional in the prior art, so that the special-shaped parts are not described in detail.

If the application discloses or relates to components or structures that are fixedly connected to each other, then unless otherwise stated, the fixedly connected structure is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).

The working principle of the embodiment is as follows:

(1) When the valve body 1 needs to be closed, a worker holds the valve handle 504 at this time, then makes the valve handle 504 start to rotate, the rotation of the valve handle 504 drives the screw rod 501 to start to rotate, the sealing block 502 moves downwards along with the rotation of the screw rod 501, the movement of the sealing block 502 drives the sealing ring 503 to move simultaneously, along with the movement of the sealing block 502, when the sealing block 502 and the sealing ring 503 move between opposite sides of the two control valves 505, and simultaneously the sealing ring 503 is attached to the control plug 506, the rotation of the valve handle 504 is stopped at this time, and the valve body 1 is closed.

(2) When the valve body 1 and the connecting pipe 4 need to be connected together, the sealing gasket 603 is attached to the second connecting flange 601 at this time, then the second connecting flange 601 is fixed to the first connecting flange 3, at this time, the fastening bolt 602 is screwed down by a worker, the fastening bolt 602 moves in a direction close to the threaded groove 604, after the fastening bolt 602 is completely screwed into the threaded groove 604, at this time, the rotation of the fastening bolt 602 is stopped, at this time, the second connecting flange 601 is fixed to the first connecting flange 3, and at this time, the connection between the second connecting flange 601 and the first connecting flange 3 is completed.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a leak protection structure of valve, includes valve body (1), its characterized in that: the valve is characterized in that a valve head (2) is fixedly arranged on the top end surface of the valve body (1), first connecting flanges (3) are arranged on the left side and the right side of the valve body (1), connecting pipelines (4) are communicated with one sides of the two first connecting flanges (3) which are opposite to each other, a leakage-proof component (5) is arranged on the upper surface of the valve head (2), and a sealing component (6) is arranged on the left side of the valve body (1);

the anti-leakage assembly (5) comprises a screw rod (501) which is in threaded connection with the upper surface of the valve head (2), a sealing block (502) is rotationally connected to the bottom end surface of the screw rod (501) through a bearing, a sealing ring (503) is fixedly sleeved on the outer side of the sealing block (502), a valve handle (504) is fixed to the top end surface of the screw rod (501), two control valves (505) are fixed to the inner part of the valve body (1), and control plugs (506) are fixed to opposite sides of the two control valves (505);

the sealing assembly (6) comprises a second connecting flange (601) fixed on the left side of the valve body (1), a fastening bolt (602) is connected to the right side of the second connecting flange (601) in a threaded mode, a sealing gasket (603) is arranged on the left side of the second connecting flange (601), and a threaded groove (604) is formed in the left side of the first connecting flange (3).

2. A valve leakage preventing structure according to claim 1, wherein: the two first connecting flanges (3) are symmetrically distributed on the left side and the right side of the longitudinal central axis of the valve body (1), and the shape of each first connecting flange (3) is a cylinder.

3. A valve leakage preventing structure according to claim 1, wherein: the upper surface of the valve head (2) is provided with a first threaded hole, and the first threaded hole is in threaded connection with the screw rod (501).

4. A valve leakage preventing structure according to claim 1, wherein: one side of the control plug (506) far away from the control valve (505) is attached to the outer side of the sealing ring (503), and the sealing ring (503) is in the shape of a cylinder with a hollow inside and a missing upper surface and a missing lower surface.

5. A valve leakage preventing structure according to claim 1, wherein: the thread groove (604) is in threaded connection with the fastening bolt (602), and a second threaded hole in threaded connection with the fastening bolt (602) is formed in the left side of the second connecting flange (601).

6. A valve leakage preventing structure according to claim 1, wherein: the number of the sealing assemblies (6) is two, and the two sealing assemblies (6) are symmetrically distributed on the left side and the right side of the longitudinal central axis of the valve body (1).