CN219317702U - Check valve with good check flow effect - Google Patents

Abstract

The utility model relates to a check valve with good check flow effect, which comprises a valve body, wherein flange plates are welded and fixed at two ends of the valve body, a group of buffer chambers with one ends extending into the valve body and welded and fixed with the valve body are arranged at the outer side of the valve body, the other ends of the buffer chambers extend out to the upper part of the valve body, a top cover is fixed at the top of the buffer chambers through the matching of a plurality of groups of threaded columns and nuts, springs with one ends fixedly connected with the top cover and the other ends extending into the inner cavity of a flow blocking seat are arranged at the inner side of the top cover, the springs are fixedly connected with the flow blocking seat, and the flow blocking seat is movably arranged in the inner cavity of the buffer chamber. According to the utility model, the flow blocking seat can move in the buffer chamber which is obliquely distributed and communicated with the valve body to change the circulation state of the medium, so that the flow blocking seat cannot be pushed to move upwards to conduct the oblique connecting pipe with the valve body when the medium flows back, and the medium can be well prevented from flowing back from the valve body.

Description

Check valve with good check flow effect

Technical Field

The utility model relates to the technical field of valves, in particular to a check valve with good check flow effect.

Background

The check valve is a valve with a circular valve clack as an opening and closing part and can stop the medium from flowing backwards by the action of the self weight and the medium pressure.

In the utility model of CN216306828U, a backflow-preventing sealing check valve is proposed, which is sleeved with a silica gel sleeve through a plug positioned at one end of a valve core, so that the damage of the plug during resetting is protected, and the backflow of water flow is effectively prevented, but the ageing and deformation of the silica gel sleeve in the backflow-preventing sealing check valve are easier to accelerate in the long-time soaking process of liquid, so that an inexact matching gap is easy to appear between the plug and the silica gel sleeve after the backflow-preventing sealing check valve is used for a long time, the backflow-preventing sealing check valve can influence the backflow-preventing effect of the check valve, and meanwhile, the plug and the silica gel sleeve are easier to deform due to direct impact when medium flows back.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the check valve with good check flow effect.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a effectual check valve of non return, includes the equal welded fastening in both ends has the valve body of ring flange, the outside of valve body is provided with a set of one end stretch into in the valve body, and with the valve body between welded fastening's buffer chamber, the other end of buffer chamber stretches out to the top of valve body, the top of buffer chamber is fixed with the top cap through the cooperation of a plurality of screw thread post and nut, the inboard of top cap is provided with one end and top cap fixed connection and the other end stretches into the spring in the choked flow seat inner chamber, fixed connection between spring and the choked flow seat, choked flow seat movably sets up in the inner chamber of buffer chamber and choked flow seat's external diameter and the internal diameter looks adaptation of buffer chamber.

Preferably, the buffer chamber is arranged to be of a pipe-shaped structure which is obliquely distributed between the buffer chamber and the valve body, the bottom end of the oblique connecting pipe extends to the bottom of the inner wall of the valve body and is welded with the bottom of the inner wall of the valve body, a flow inlet which enables the oblique connecting pipe to be communicated with the inner cavity of the valve body is formed in one side of the bottom end of the oblique connecting pipe, a flow guide outlet is formed in one side of the oblique connecting pipe, which is opposite to the flow inlet, of the oblique connecting pipe, the flow guide outlet is located above the flow inlet, the flow inlet and the flow guide outlet are respectively oriented to two ends of the valve body, and therefore the oblique connecting pipe can be utilized to buffer the medium to a certain extent when the medium flows back, and impact of the medium flow back to the flow blocking seat is reduced.

In a further preferred embodiment, the choke seat and the buffer chamber are coaxially distributed, and the choke seat is located in the oblique connecting pipe and can shield the diversion outlet, and the choke seat is located above the inlet at the same time, so that backflow can be prevented by using the choke seat, and input of shielding media can be avoided.

In a further preferred embodiment, a transparent observation window is embedded and fixed at the top of the top cover, and the observation window faces the inner cavity of the buffer chamber, so that a user can conveniently see the running state in the check valve through the observation window.

In a further preferred embodiment, a group of guide posts with a length smaller than the natural length of the spring are fixedly connected to one side of the observation window, facing the buffer chamber, and the guide posts are located on the inner side of the spring, so that the limit guide of the guide posts to the spring is performed, and bending damage of the spring during elastic deformation is reduced.

(III) beneficial effects

Compared with the prior art, the utility model provides the check valve with good check flow effect, which has the following beneficial effects:

1. according to the utility model, the flow blocking seat can move in the buffer chamber which is obliquely distributed and communicated with the valve body to change the circulation state of the medium, so that the flow blocking seat cannot be pushed to move upwards to conduct the oblique connecting pipe with the valve body when the medium flows back, and the medium can be well prevented from flowing back from the valve body.

2. According to the utility model, through the position matching of the inlet and the flow guiding outlet formed on the surface of the oblique connecting pipe and the connection matching between the oblique connecting pipe and the valve body, the oblique connecting pipe can be utilized to buffer the medium in a certain degree during the medium backflow, and the impact of the medium backflow on the flow blocking seat is reduced.

3. According to the utility model, through embedding and mounting of the observation window at the top of the top cover, a user can conveniently check the running state in the check valve through the observation window, and the bending damage of the spring when the spring is elastically deformed is reduced through limiting and guiding the spring by the guide post.

Drawings

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

FIG. 2 is a schematic diagram of the internal structure of the valve body of the present utility model after being partly cut away;

FIG. 3 is a schematic view showing an exploded structure of a buffer chamber and a connection structure thereof according to the present utility model;

FIG. 4 is a schematic view of a buffer chamber according to the present utility model;

fig. 5 is a schematic view of the structure of the top cover of the present utility model.

In the figure: 1. a valve body; 2. a flange plate; 3. a buffer chamber; 301. a slant connecting pipe; 302. a feed port; 303. a diversion outlet; 4. a choke seat; 5. a spring; 6. a top cover; 7. an observation window; 8. a guide post; 9. and (3) a nut.

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.

Examples:

referring to fig. 1-5, a check valve with good check flow effect comprises a valve body 1 with flange plates 2 welded and fixed at two ends, a group of springs 5 with one ends extending into the valve body 1 and welded and fixed with the valve body 1 are arranged at the outer side of the valve body 1, the other ends of the buffer chambers 3 extend out to the upper side of the valve body 1, a top cover 6 is fixed at the top of the buffer chambers 3 through the matching of a plurality of groups of threaded posts and nuts 9, so that a user can detach a connecting structure at the top of the buffer chambers 3 after detaching the threaded posts and nuts, the check valve can replace structures such as springs 5 in the check valve after being used for a long time, one end of each spring 5 is fixedly connected with the top cover 6, the other ends of each springs 5 extend into an inner cavity of a flow blocking seat 4, the springs 5 are fixedly connected with the flow blocking seats 4, the flow blocking seats 4 are movably arranged in the inner cavity of the buffer chambers 3, the outer diameters of the flow blocking seats 4 are matched with the inner diameters of the buffer chambers 3 at the moment, and when media are input, the media can flow through the buffer chambers 3 and exert acting forces on the flow blocking seats 4 and exert, and can be compressed from the buffer seats 3 to the other ends of the buffer chambers 1 to the valve body 1, and simultaneously, and when the other ends of the check valves can be compressed from the buffer chambers 1 and the other ends are compressed.

In this embodiment, the buffer chamber 3 is set to a tube structure distributed obliquely between the buffer chamber 3 and the valve body 1, and the bottom end of the oblique connecting tube 301 extends to the bottom of the inner wall of the valve body 1 and is welded with the bottom end of the oblique connecting tube 301, one side of the bottom end of the oblique connecting tube 301 is provided with an inlet 302 which enables the oblique connecting tube 301 to be communicated with the inner cavity of the valve body 1, one side of the oblique connecting tube 301 opposite to the inlet 302 is provided with an outlet 303, and the outlet 303 is located above the inlet 302, the inlet 302 and the outlet 303 face the two ends of the valve body 1 respectively, when the check valve with good check flow effect is used in connection, one end of the valve body 1 facing the inlet 302 is communicated with an input port of a medium, and one end of the valve body 1 faces the outlet 303 is communicated with an output port of the medium, so that the medium can smoothly enter the oblique connecting tube 301 through the inlet 302 when the medium is input, and the medium can be buffered to a certain extent by the oblique connecting tube 301, the impact of the medium backflow seat 4 is reduced, the flow blocking seat 4 and the buffer chamber 3 are distributed coaxially, so that the flow blocking seat 4 is pushed by the input medium is pushed smoothly, and the medium backflow seat 4 can not move smoothly, and the medium backflow seat 4 can not be prevented from moving obliquely, and the inlet 1 can be prevented from moving obliquely, and the inlet seat 4 is located above the inlet 1, and the outlet 303 is located above the inlet 1.

In this embodiment, the top of top cap 6 inlays and establishes and is fixed with transparent observation window 7, and the inner chamber of observation window 7 towards buffer chamber 3, inlay through top cap 6 top observation window 7 and establish the installation, make the user be convenient for see through the observation window 7 and look over the running state in the check valve, one side fixedly connected with of observation window 7 towards buffer chamber 3 has a set of guide post 8 that length is less than the natural length of spring 5, and guide post 8 is located the inboard of spring 5, spacing guide through guide post 8 to spring 5, bending damage when reducing spring 5 and producing elastic deformation can utilize guide post 8 to restrict the compression length of spring to avoid it to produce excessive compression simultaneously.

Example 2:

when the check valve with good check flow effect is used, one end of the valve body 1 facing the inlet 302 is communicated with the medium input port, one end of the valve body 1 facing the flow guiding outlet 303 is communicated with the medium output port, when the medium is input, the medium can flow through the inlet 302 into the inclined connecting pipe 301 and apply acting force to the flow blocking seat 4, at the moment, the flow blocking seat 4 can compress the spring 5 and move upwards along the inner cavity of the inclined connecting pipe 301, and when the flow blocking seat 4 does not shade the flow guiding outlet 303, the medium can flow out from the flow guiding outlet 303 and simultaneously flow out through the other end of the valve body 1.

Example 3:

when the medium flows back, the medium is firstly blocked by the side of the inclined connecting tube 301 with the flow guiding outlet 303, the medium can flow through the flow guiding outlet 303 after accumulating to a certain height, the flow guiding outlet 303 can be blocked by the flow blocking seat 4, and the flow blocking seat 4 cannot be pushed to move upwards along the inner cavity of the inclined connecting tube 301 when the flow blocking seat 4 is forced by the flowing back medium, so that the medium is prevented from flowing back into the inclined connecting tube 301.

In all the above mentioned solutions, in which the connection between two components can be chosen according to the actual situation, a welded, bolt-and-nut-fitted connection, a bolt-or-screw connection or other known connection means, which are not described in detail herein, where reference is made to a written fixed connection, the preferred consideration is welding, although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that numerous variations, modifications, substitutions and alterations can be made to these embodiments without departing from the principle and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a check valve that non return is effectual, includes valve body (1) that both ends equal welded fastening had ring flange (2), its characterized in that, the outside of valve body (1) is provided with a set of one end and stretches into in valve body (1) and with valve body (1) between welded fastening's buffer chamber (3), the other end of buffer chamber (3) stretches out to the top of valve body (1), the top of buffer chamber (3) is fixed with top cap (6) through the cooperation of a plurality of screw thread post and nut (9), the inboard of top cap (6) is provided with spring (5) that one end and top cap (6) fixed connection and the other end stretched into in the interior chamber of choked flow seat (4), fixed connection between spring (5) and choked flow seat (4), choked flow seat (4) movably set up in the interior chamber of buffer chamber (3) and the external diameter of choked flow seat (4) and the internal diameter looks adaptation of buffer chamber (3).

2. The non-return valve in accordance with claim 1, wherein: the buffer chamber (3) is arranged to be of a pipe-shaped structure which is obliquely distributed between the buffer chamber and the valve body (1), the bottom end of the oblique connecting pipe (301) extends to the bottom of the inner wall of the valve body (1) and is welded with the bottom of the inner wall of the valve body, one side of the bottom end of the oblique connecting pipe (301) is provided with a flow inlet (302) which enables the oblique connecting pipe (301) to be communicated with the inner cavity of the valve body (1), one side of the oblique connecting pipe (301) back to the flow inlet (302) is provided with a flow guide outlet (303), the flow guide outlet (303) is located above the flow inlet (302), and the flow inlet (302) and the flow guide outlet (303) face towards two ends of the valve body (1) respectively.

3. The non-return valve with good non-return effect according to claim 2, wherein: the flow blocking seats (4) and the buffer chamber (3) are coaxially distributed, the flow blocking seats (4) are positioned in the inclined connecting pipe (301) and can shield the flow guiding outlet (303), and the flow blocking seats (4) are positioned above the inlet (302) at the same time.

4. The non-return valve in accordance with claim 1, wherein: the top of the top cover (6) is embedded with a transparent observation window (7), and the observation window (7) faces the inner cavity of the buffer chamber (3).

5. The non-return valve in accordance with claim 4 wherein: one side of the observation window (7) facing the buffer chamber (3) is fixedly connected with a group of guide posts (8) with the length smaller than the natural length of the spring (5), and the guide posts (8) are positioned on the inner side of the spring (5).

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