CN216895958U

CN216895958U - Sealing check valve with sealing pad

Info

Publication number: CN216895958U
Application number: CN202220363429.7U
Authority: CN
Inventors: 陈恩良; 陈恩法; 林贤红
Original assignee: Taizhou Rida Valve Co ltd
Current assignee: Taizhou Rida Valve Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-05
Anticipated expiration: 2032-02-22

Abstract

The utility model relates to the technical field of check valves, in particular to a high-sealing check valve with a sealing gasket, which comprises a valve body, wherein the inner side of the valve body is fixedly connected with one end of a connecting block, the other end of the connecting block is fixedly connected with a cavity, the inner side of the cavity is fixedly connected with a limiting cavity, the inner side of the limiting cavity is fixedly connected with one end of a first spring, the other end of the first spring is fixedly connected with one end of a sliding block, the other end of the sliding block is fixedly connected with a sealing gasket, the outer side of the sealing gasket is fixedly connected with one end of a sliding rod, the other end of the sliding rod is fixedly connected with one end of a second spring and one end of a thin pull rope, the other end of the second spring is fixedly connected with a cavity, and the other end of the thin pull rope is fixedly connected with a tensioning device, so that when fluid flows backwards, the sliding block drives the sealing gasket to move leftwards under the elastic potential energy of the first spring and the elastic potential energy of the second spring, the sealing gasket is kept in close contact with the inner wall of the valve body, and the non-return effect of the whole device is improved.

Description

Sealing check valve with sealing pad

Technical Field

The utility model relates to the technical field of check valves, in particular to a high-sealing check valve with a sealing gasket.

Background

With the development of society, the application of check valves is becoming more extensive, the check valve refers to a valve whose opening and closing member is a circular valve flap and acts by its own weight and medium pressure to block the backflow of medium, and belongs to the automatic valve class, also known as check valve, one-way valve, backflow valve or isolating valve, the valve flap motion mode is divided into lift type and swing type, the lift type check valve is similar to the structure of the stop valve, only lacks the valve rod for driving the valve flap, medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side), when the inlet pressure is larger than the sum of the weight of the valve flap and its flow resistance, the valve is opened, otherwise, the valve is closed when medium flows backwards, the swing type check valve has an inclined position and can rotate around the shaft, the working principle is similar to the lift type check valve, the check valve is commonly used as the bottom valve of a water pumping device, the check valve can block the backflow of water, and the check valve is used in combination with the stop valve, can play the effect of safety isolation, but the great majority of shortcoming of current check valve are that the resistance is big, and the leakproofness is poor when closing, and the effect of using sealed the pad is better, but the positive effect that flows is influenced again to thick sealed pad, consequently, proposes a sealed check valve of area sealing gasket height to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-sealing check valve with a sealing gasket, which aims to solve the problems that most of the existing check valves proposed in the background art have the defects of large resistance, poor sealing performance during closing and good effect of using the sealing gasket, but the positive flow effect is influenced by the thick sealing gasket.

In order to achieve the purpose, the utility model provides the following technical scheme:

a high-sealing check valve with a sealing gasket comprises a valve body, a pipe and a fastener, wherein one end of a connecting block and a guide block are fixedly connected to the inner side of the valve body, the other end of the connecting block is fixedly connected with a cavity, the inner side of the cavity is provided with a chute, the inner side of the cavity is fixedly connected with a limiting cavity, one end of a first spring is fixedly connected with the inner side of the limit cavity, the other end of the first spring is fixedly connected with one end of a sliding block, the outer side of the sliding block is connected with the inner side of the limiting cavity in a sliding way, the other end of the sliding block is fixedly connected with a sealing gasket, one end of a sliding rod is fixedly connected with the outer side of the sealing gasket, the outer side of the sliding rod is connected with the sliding groove in a sliding manner, the other end of the sliding rod is fixedly connected with one end of a second spring and one end of a thin pull rope, the other end of the second spring is fixedly connected with the cavity, and the other end of the thin pull rope is fixedly connected with a tensioning device.

Preferably: the tensioning device comprises a thick pull rope, one end of the thick pull rope is fixedly connected with the thin pull rope, the other end of the thick pull rope penetrates through the guide block and is fixedly connected with the take-up reel, the inner side of the valve body is fixedly connected with a fixed rod, the outer side of the fixed rod is rotatably connected with an impeller, and the outer side of the impeller is fixedly connected with the take-up reel.

Preferably: the outside sliding connection of thin stay cord has first pulley, the inboard of first pulley is rotated through the pivot and is connected with the head rod, the outside and the cavity fixed connection of head rod, the outside sliding connection of thick stay cord has the second pulley, the inboard of second pulley is rotated through the pivot and is connected with the second connecting rod, the outside and the guide block fixed connection of second connecting rod, the inboard fixedly connected with fixed block of valve body, the inboard of fixed block is rotated through the pivot and is connected with the third pulley, the outside and the thick stay cord sliding connection of third pulley.

Preferably: the horizontal center lines of the cavity, the sealing gasket, the limiting cavity and the sliding block coincide with the horizontal center line of the valve body.

Preferably: the number of the thin pull ropes is four, and the thin pull ropes are symmetrically arranged on the inner side of the valve body.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the cavity, the limiting cavity, the sliding block, the sliding rod, the first spring and the second spring, when fluid flows backwards, the sliding block drives the sealing gasket to move leftwards under the elastic potential energy of the first spring and the elastic potential energy of the second spring, so that the sealing gasket is in close contact with the inner wall of the valve body, and the non-return effect of the whole device is improved.

2. According to the utility model, through the impeller, the take-up reel, the thick pull rope and the thin pull rope, when a fluid flows in the forward direction, the fluid drives the impeller to rotate, so that the take-up reel is driven to rotate, and the thick pull rope and the thin pull rope drive the slide rod to move rightwards, so that the edge part of the sealing gasket is pulled rightwards, and the forward flow effect of the whole device is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 at point A according to the present invention;

fig. 3 is a schematic view of the mounting structure of the connecting block of the present invention.

In the figure: 1-valve body, 2-pipe, 3-fastener, 4-connecting block, 5-cavity, 6-chute, 7-limit cavity, 8-first spring, 9-slide block, 10-sealing pad, 11-slide rod, 12-second spring, 13-fine pull rope, 14-tensioning device, 15-coarse pull rope, 16-guide block, 17-take-up reel, 18-fixing rod, 19-impeller, 20-first pulley, 21-first connecting rod, 22-second pulley, 23-second connecting rod, 24-fixing block and 25-third pulley.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

Referring to fig. 1-3, the present invention provides a technical solution:

a high sealing check valve with a sealing gasket comprises a valve body 1, a pipe 2 and a fastener 3, wherein one end of a connecting block 4 and a guide block 16 are fixedly connected to the inner side of the valve body 1, the other end of the connecting block 4 is fixedly connected with a cavity 5, a sliding groove 6 is formed in the inner side of the cavity 5, a limiting cavity 7 is fixedly connected to the inner side of the cavity 5, one end of a first spring 8 is fixedly connected to the inner side of the limiting cavity 7, one end of a sliding block 9 is fixedly connected to the other end of the first spring 8, the outer side of the sliding block 9 is slidably connected with the inner side of the limiting cavity 7, a sealing gasket 10 is fixedly connected to the other end of the sliding block 9, one end of a sliding rod 11 is fixedly connected to the outer side of the sealing gasket 10, the outer side of the sliding rod 11 is slidably connected with the sliding groove 6, one end of a second spring 12 and one end of a fine pull rope 13 are fixedly connected to the other end of the sliding rod 11, and the other end of the second spring 12 is fixedly connected with the cavity 5, the other end of the thin pull rope 13 is fixedly connected with a tensioning device 14, so that when fluid flows backwards, the sliding block 9 drives the sealing gasket 10 to move leftwards under the elastic potential energy of the first spring 8, the sliding rod 11 drives the sealing gasket 10 to move leftwards under the elastic potential energy of the second spring 12, the sealing gasket 10 is in close contact with the inner wall of the valve body 1, the non-return effect of the whole device is increased, the tensioning device 14 comprises a thick pull rope 15, one end of the thick pull rope 15 is fixedly connected with the thin pull rope 13, the other end of the thick pull rope 15 penetrates through a guide block 16 and is fixedly connected with a take-up reel 17, the inner side of the valve body 1 is fixedly connected with a fixed rod 18, the outer side of the fixed rod 18 is rotatably connected with an impeller 19, the outer side of the impeller 19 is fixedly connected with the take-up reel 17, so that when the fluid flows forwards, the fluid drives the impeller 19 to rotate, the take-up reel 17 to rotate, and further drives the sliding rod 11 to move rightwards through the thick pull rope 15 and the thin pull rope 13, the edge part of the sealing gasket 10 is pulled rightwards, the positive flow effect of the whole device is increased, the outer side of the thin pull rope 13 is connected with a first pulley 20 in a sliding manner, the inner side of the first pulley 20 is rotatably connected with a first connecting rod 21 through a rotating shaft, the outer side of the first connecting rod 21 is fixedly connected with the cavity 7, the outer side of the thick pull rope 15 is connected with a second pulley 22 in a sliding manner, the inner side of the second pulley 22 is rotatably connected with a second connecting rod 23 through a rotating shaft, the outer side of the second connecting rod 23 is fixedly connected with a guide block 16, the inner side of the valve body 1 is fixedly connected with a fixed block 24, the inner side of the fixed block 24 is rotatably connected with a third pulley 25 through a rotating shaft, the outer side of the third pulley 25 is slidably connected with the thick pull rope 15, so that the friction between the thin pull rope 13 and the thick pull rope 15 can be reduced, the horizontal central lines of the cavity 5, the sealing gasket 10, the limiting cavity 7 and the sliding block 9 coincide with the horizontal central line of the valve body 1, therefore, the resistance of the whole device is small, the number of the thin pull ropes 13 is four, and the thin pull ropes 13 are symmetrically arranged on the inner side of the valve body 1, so that the stress of the thin pull ropes 13 is more uniform.

The working process is as follows: when fluid in the valve body 1 flows from left to right in a forward direction, the fluid applies pressure to the sealing gasket 10, the sealing gasket 10 is extruded to move rightwards, the sliding block 9 is driven to slide rightwards in the limiting cavity 7, meanwhile, the fluid pushes the impeller 19 to rotate, the take-up reel 17 is driven to rotate, the edge of the sealing gasket 10 is pulled to move rightwards continuously through the coarse pull rope 15, the fine pull rope 13 and the sliding rod 11, when the fluid flows reversely, the impeller 19 rotates reversely, the sliding block 9 and the sliding rod 11 move leftwards under the elastic potential energy of the first spring 8 and the second spring 12, and the sealing gasket 10 is in close contact with the inner wall of the valve body 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 sealed check valve of area seal bed hedgehopping, includes valve body (1), tubular product (2) and fastener (3), its characterized in that: the valve is characterized in that one end of a connecting block (4) and a guide block (16) are fixedly connected to the inner side of the valve body (1), the other end of the connecting block (4) is fixedly connected with a cavity (5), a sliding groove (6) is formed in the inner side of the cavity (5), a limiting cavity (7) is fixedly connected to the inner side of the cavity (5), one end of a first spring (8) is fixedly connected to the inner side of the limiting cavity (7), the other end of the first spring (8) is fixedly connected with one end of a sliding block (9), the outer side of the sliding block (9) is slidably connected with the inner side of the limiting cavity (7), a sealing gasket (10) is fixedly connected to the other end of the sliding block (9), one end of a sliding rod (11) is fixedly connected to the outer side of the sealing gasket (10), the outer side of the sliding rod (11) is slidably connected with the sliding groove (6), one end of a second spring (12) and one end of a thin pull rope (13) are fixedly connected to the other end of the sliding rod (11), the other end of the second spring (12) is fixedly connected with the cavity (5), and the other end of the thin pull rope (13) is fixedly connected with a tensioning device (14).

2. The elevated sealing check valve with gasket of claim 1, wherein: the tensioning device (14) comprises a thick pull rope (15), one end of the thick pull rope (15) is fixedly connected with the thin pull rope (13), the other end of the thick pull rope (15) penetrates through a guide block (16) and is fixedly connected with a take-up reel (17), a fixing rod (18) is fixedly connected to the inner side of the valve body (1), an impeller (19) is rotatably connected to the outer side of the fixing rod (18), and the outer side of the impeller (19) is fixedly connected with the take-up reel (17).

3. The elevated sealing check valve with gasket of claim 2, wherein: the outside sliding connection of thin stay cord (13) has first pulley (20), the inboard of first pulley (20) is rotated through the pivot and is connected with head rod (21), the outside and cavity (5) fixed connection of head rod (21), the outside sliding connection of thick stay cord (15) has second pulley (22), the inboard of second pulley (22) is rotated through the pivot and is connected with second connecting rod (23), the outside and guide block (16) fixed connection of second connecting rod (23), the inboard fixedly connected with fixed block (24) of valve body (1), the inboard of fixed block (24) is rotated through the pivot and is connected with third pulley (25), the outside and thick stay cord (15) sliding connection of third pulley (25).

4. The elevated sealing check valve with gasket of claim 1, wherein: the horizontal center lines of the cavity (5), the sealing gasket (10), the limiting cavity (7) and the sliding block (9) are overlapped with the horizontal center line of the valve body (1).

5. The elevated sealing check valve with gasket of claim 1, wherein: the number of the thin pull ropes (13) is four, and the thin pull ropes (13) are symmetrically arranged on the inner side of the valve body (1).