CN216200878U

CN216200878U - Reliably sealed check valve

Info

Publication number: CN216200878U
Application number: CN202122461982.2U
Authority: CN
Inventors: 孙红梅; 王进海
Original assignee: Kongyan Tianjin Ventilation Equipment Co ltd
Current assignee: Kongyan Tianjin Ventilation Equipment Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-04-05
Anticipated expiration: 2031-10-13

Abstract

The application provides a reliably sealed check valve, which comprises a basic assembly, a valve body and a valve cover, wherein the basic assembly comprises the valve body, and the top of the valve body is fixedly provided with the valve cover through a bolt; the sealing compensation assembly comprises a movable rod inserted at the bottom of the sleeve, the top of the movable rod is fixed with the inner wall of the top of the sleeve through a second spring, a valve plate attached to the end face of the step is arranged at the bottom of the movable rod, and an annular sealing ring is embedded at the bottom of the valve plate; and the filter assembly is arranged at an inlet on the left side of the inner cavity of the valve body. This technical scheme improves the leakproofness of valve plate and ladder terminal surface through being provided with ring packing and ring seal groove through being provided with sealed compensation subassembly, realizes further leakproofness through seal receptacle and connecting seal circle and strengthens, uses for a long time simultaneously, when the clearance appears with the ladder terminal surface in the valve plate, can pour into gas into in to the charging connector through external equipment, realizes connecting rod length adjustment, realizes sealed compensation.

Description

Reliably sealed check valve

Technical Field

The utility model belongs to the technical field of the check valve technique and specifically relates to a reliably sealed check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards.

The principle of the check valve with reliable sealing in the prior art is as follows: add seal structure through strengthening valve plate and valve body inner chamber junction and improve the leakproofness, the valve of part check valve can pass through the assistance of spring for better reseing, consequently along with long-term the use, the increase of spring fatigue degree leads to easily having certain clearance with valve body inner chamber junction after the valve resets, leads to having the liquid reflux condition to appear for seal structure can't effectively exert sealed effect.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, the present application is directed to a reliable sealing check valve.

In a first aspect, the check valve with reliable sealing comprises a base assembly, wherein the base assembly comprises a valve body, the top of the valve body is fixedly provided with a valve cover through a bolt, the bottom of the valve cover is integrally formed with a sleeve, and a stepped end face is arranged in an inner cavity of the valve body and corresponds to the position of the valve cover; the sealing compensation assembly comprises a movable rod inserted at the bottom of the sleeve, the top of the movable rod is fixed with the inner wall of the top of the sleeve through a second spring, a valve plate attached to the stepped end face is arranged at the bottom of the movable rod, an annular sealing ring is embedded at the bottom of the valve plate, a sealing groove matched with the annular sealing ring is formed in the top of the stepped end face, a sealing seat is fixed at the top of the stepped end face and sleeved outside the valve plate, a connecting sealing ring is sleeved on the outer wall of the circumference of the valve plate, and an annular sealing groove matched with the connecting sealing ring is formed in the inner wall of the sealing seat; and the filter assembly is arranged at an inlet on the left side of the inner cavity of the valve body.

According to the technical scheme that this application embodiment provided, the activity of movable rod bottom is inserted and is equipped with the connecting rod, and the connecting rod is fixed with the valve plate, the piston chamber with the connecting rod adaptation is seted up to movable rod inner chamber bottom, the connecting rod top is fixed with the piston with piston chamber adaptation.

According to the technical scheme that this application embodiment provided, the movable rod top can be dismantled to insert and be equipped with sealed fixture block, and the movable rod top offer with the draw-in groove of sealed fixture block adaptation, the draw-in groove tank bottom passes through passageway and piston chamber intercommunication, set up the direction way with the passageway intercommunication in the sealed fixture block.

According to the technical scheme that this application embodiment provided, sealed fixture block top is fixed with the bellows that communicates with the direction way, the bellows top runs through valve gap top and communicates and has the charging connector, and the charging connector fixes at the valve gap top, the top screw thread of charging connector has connect the sealing plug soon.

According to the technical scheme that this application embodiment provided, the T shape hole that communicates with the draw-in groove all is seted up at side top about the movable rod, and the downthehole T shape pole one that is provided with of T shape, the through-hole with a T shape pole adaptation is all seted up to the left and right sides outer wall of sealed fixture block, a T shape pole outer wall cover is equipped with spring one.

According to the technical scheme that this application embodiment provided, filtering component is including setting up in the lantern ring of valve body inner chamber left side entrance, and the fixed filter screen that is provided with the looks adaptation in lantern ring inner chamber right side, the inner wall symmetry of the top of the lantern ring and bottom is inserted and is equipped with T shape pole two, and valve body inner chamber left side entrance inner wall offer with the card hole of two adaptations of T shape pole, the outer wall cover of T shape pole is equipped with spring three, T shape pole two is in the filter screen left.

In summary, the present application discloses a reliable sealing check valve.

This technical scheme is through being provided with sealed compensation assembly, improve the leakproofness of valve plate and ladder terminal surface through being provided with ring packing circle and ring packing groove, realize further leakproofness through seal receptacle and connecting seal circle and strengthen, long-term the use simultaneously, when the clearance appears with the ladder terminal surface in the valve plate, can be to gas injection through external equipment in the charging connector, make gas pass through the bellows and get into the piston chamber, realize connecting rod length adjustment, realize sealed compensation, improve the sealed effect of this check valve long-term use, when long-term the use simultaneously, the valve gap is demolishd to the accessible, realize the inner structure and change, the life of this check valve is prolonged.

Furthermore, on the basis of above-mentioned structural design, this application is still through being provided with filtering component in the valve body, intercepts through the impurity of filter screen in to rivers and filters, reduces the damage to valve plate and ladder terminal surface junction seal structure, and this filtering component makes things convenient for the later maintenance with the valve body dismouting fast simultaneously for the device life is higher.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a cross-sectional view of the present application;

FIG. 2 is an enlarged view of the structure A of FIG. 1 of the present application;

fig. 3 is an enlarged view of the structure B in fig. 1 in the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

Referring to fig. 1-3, a reliable-sealing check valve includes a base assembly 1, the base assembly 1 includes a valve body 11, a valve cover 12 is fixedly disposed on the top of the valve body 11 through bolts, a sleeve is integrally formed on the bottom of the valve cover 12, and a stepped end surface 13 is disposed in an inner cavity of the valve body 11 and corresponding to the position of the valve cover 12, which all belong to the structure of the existing check valve and are not described in detail herein; the sealing compensation assembly 2 comprises a movable rod 25 inserted at the bottom of a sleeve, the top of the movable rod 25 is fixed with the inner wall of the top of the sleeve through a second spring 211, the bottom of the second spring 211 is fixed with the top of a sealing fixture block 28, a valve plate 21 attached to a step end face 13 is arranged at the bottom of the movable rod 25, the step end face 13 is sealed by the valve plate 21 to realize the function of blocking the backflow of a medium, an annular sealing ring is embedded at the bottom of the valve plate 21, a sealing groove matched with the annular sealing ring is formed in the top of the step end face 13, the sealing performance of the joint of the valve plate 21 and the step end face 13 is improved, a sealing seat 22 is fixed at the top of the step end face 13, the sealing seat 22 is sleeved on the outer side of the valve plate 21, a connecting sealing ring 23 is sleeved on the outer circumferential wall of the valve plate 21, an annular sealing groove matched with the connecting sealing ring 23 is formed in the inner wall of the sealing seat 22, and the sealing performance of the joint of the valve plate 21 and the step end face 13 is further improved, the connecting seal ring 23 and the annular seal ring can be made of rubber materials; and the filter assembly 3 is arranged at an inlet on the left side of the inner cavity of the valve body 11.

Referring to fig. 1-2, a connecting rod 26 is movably inserted into the bottom of the movable rod 25, the connecting rod 26 is fixed to the valve plate 21, a piston cavity matched with the connecting rod 26 is formed in the bottom of an inner cavity of the movable rod 25, a piston 210 matched with the piston cavity is fixed to the top end of the connecting rod 26, and when air is injected into the piston cavity, the piston 210 drives the connecting rod 26 to move the valve plate 21, so that when the valve plate 21 and the step end face 13 have a problem of tightness, sealing compensation can be performed by injecting air into the piston cavity after long-term use;

referring to fig. 1-2, a sealing block 28 is detachably inserted into the top of the movable rod 25, a clamping groove adapted to the sealing block 28 is formed in the top of the movable rod 25 to realize positioning and installation, the bottom of the clamping groove is communicated with the piston cavity through a channel, a guide channel communicated with the channel is formed in the sealing block 28, and gas enters the piston cavity from the guide channel;

referring to fig. 1-2, a flexible hose 212 communicated with the guide channel is fixed at the top of the sealing fixture block 28, and does not interfere with the up-and-down movement of the movable rod 25, the top of the flexible hose 212 penetrates through the top of the valve cover 12 and is communicated with the charging connector 24, the charging connector 24 is fixed at the top of the valve cover 12, a sealing plug is screwed at the top of the charging connector 24 to seal the charging connector 24, and when the sealing compensation operation is required, the sealing plug is connected with the charging connector 24 through external charging equipment, and a proper amount of gas can be injected into the piston cavity;

referring to fig. 1-2, T-shaped holes communicated with the clamping groove are formed in the top of each of the left side and the right side of the movable rod 25, a first T-shaped rod 27 is arranged in each of the T-shaped holes, through holes matched with the first T-shaped rods 27 are formed in the outer walls of the left side and the right side of the sealing clamping block 28, a first spring 29 is sleeved on the outer wall of the first T-shaped rod 27, one end of the first spring 29 is fixed to the outer end of the first T-shaped rod 27, the other end of the first spring 29 is fixed to the outer wall of the inner side of the T-shaped hole, and the sealing clamping block 28 can be fixed in the clamping groove or detached from the clamping groove by pulling the first T-shaped rod 27 outwards.

Example 2

Referring to fig. 1 and 3, the filter assembly 3 includes a lantern ring 31 disposed at an inlet on the left side of an inner cavity of the valve body 11, and plays a role of supporting and installing a structure, a filter screen 33 is fixedly disposed on the right side of the inner cavity of the lantern ring 31, and plays a role of filtering impurities in entering water, a T-shaped rod two 32 is symmetrically inserted into the top and bottom inner walls of the lantern ring 31, a clamping hole matched with the T-shaped rod two 32 is formed in the inner wall of the inlet on the left side of the inner cavity of the valve body 11, the T-shaped rod two 32 enters the clamping hole to achieve the dismounting and mounting of the lantern ring 31 and the valve body 11, a spring three 34 is sleeved on the outer wall of the T-shaped rod two 32, the T-shaped rod two 32 is located on the left side of the filter screen 33, one end of the spring three 34 is fixed to the outer end of the T-shaped rod two 32, and the inner end of the spring three 34 is fixed to the inner wall of the lantern ring 31.

The rest of the structure was the same as in example 1

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A reliably sealed check valve is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the base assembly (1) comprises a valve body (11), the top of the valve body (11) is fixedly provided with a valve cover (12) through a bolt, the bottom of the valve cover (12) is integrally formed with a sleeve, and a stepped end face (13) is arranged in the inner cavity of the valve body (11) and corresponds to the position of the valve cover (12);

the sealing compensation assembly (2) comprises a movable rod (25) inserted at the bottom of the sleeve, the top of the movable rod (25) is fixed with the inner wall of the top of the sleeve through a second spring (211), a valve plate (21) attached to a step end face (13) is arranged at the bottom of the movable rod (25), an annular sealing ring is embedded at the bottom of the valve plate (21), a sealing groove matched with the annular sealing ring is formed in the top of the step end face (13), a sealing seat (22) is fixed at the top of the step end face (13), the sealing seat (22) is sleeved on the outer side of the valve plate (21), a connecting sealing ring (23) is sleeved on the outer wall of the circumference of the valve plate (21), and an annular sealing groove matched with the connecting sealing ring (23) is formed in the inner wall of the sealing seat (22);

the filter assembly (3), filter assembly (3) set up in valve body (11) inner chamber left side entrance.

2. A reliable seal check valve as defined in claim 1, wherein: the valve plate is characterized in that a connecting rod (26) is movably inserted into the bottom of the movable rod (25), the connecting rod (26) is fixed with the valve plate (21), a piston cavity matched with the connecting rod (26) is formed in the bottom of the inner cavity of the movable rod (25), and a piston (210) matched with the piston cavity is fixed to the top end of the connecting rod (26).

3. A reliable seal check valve as defined in claim 2 wherein: the top of the movable rod (25) is detachably inserted with a sealing clamping block (28), the top of the movable rod (25) is provided with a clamping groove matched with the sealing clamping block (28), the bottom of the clamping groove is communicated with the piston cavity through a channel, and a guide channel communicated with the channel is formed in the sealing clamping block (28).

4. A reliable seal check valve as defined in claim 3 wherein: the top of the sealing clamping block (28) is fixedly provided with an expansion hose (212) communicated with the guide channel, the top of the expansion hose (212) penetrates through the top of the valve cover (12) and is communicated with an inflating nozzle (24), the inflating nozzle (24) is fixed at the top of the valve cover (12), and the top of the inflating nozzle (24) is screwed with a sealing plug.

5. A reliable seal check valve as defined in claim 4 wherein: the T-shaped hole communicated with the clamping groove is formed in the top of the left side and the right side of the movable rod (25), a first T-shaped rod (27) is arranged in the T-shaped hole, a through hole matched with the first T-shaped rod (27) is formed in the outer walls of the left side and the right side of the sealing clamping block (28), and a first spring (29) is sleeved on the outer wall of the first T-shaped rod (27).

6. A reliable seal check valve as defined in claim 5 wherein: filter component (3) including setting up lantern ring (31) in valve body (11) inner chamber left side entrance, and lantern ring (31) inner chamber right side is fixed and is provided with filter screen (33) of looks adaptation, the inner wall symmetry of the top of the lantern ring (31) and bottom is inserted and is equipped with two (32) of T shape pole, and valve body (11) inner chamber left side entrance inner wall offer with the card hole of two (32) adaptations of T shape pole, two (32) outer wall covers of T shape pole are equipped with three (34) of spring, two (32) of T shape pole are in filter screen (33) left.