CN220688126U

CN220688126U - One-way valve

Info

Publication number: CN220688126U
Application number: CN202321571016.9U
Authority: CN
Inventors: 肖亮亮; 高倩; 王军
Original assignee: Hebei Veyong Bio Chemical Co ltd
Current assignee: Hebei Veyong Bio Chemical Co ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2024-03-29
Anticipated expiration: 2033-06-20

Abstract

The utility model relates to a one-way valve, which comprises a cover body, a liquid outlet, a liquid inlet, a valve core assembly and a guide assembly, wherein an inner cavity is formed in the cover body, the liquid outlet is arranged at the top of the cover body, the liquid inlet is arranged at the bottom of the cover body, the valve core assembly is arranged in the cover body, and the guide assembly is arranged at the bottom of the cover body; the valve core assembly comprises a guide rod, a blocking part and a first spring, wherein the guide rod is arranged in the cover body and is in sliding connection with the top of the valve core; the blocking part is arranged in the cover body and is tightly attached to the inner side wall of the cover body, and the spring is arranged between the cover body and the blocking part. According to the utility model, liquid enters the cover body from the liquid inlet and flows out through the liquid outlet, the valve core assembly can play a role in unidirectional flow stopping, the guide assembly can play a role in guiding and buffering the liquid, normal operation of the valve core assembly is ensured, and jamming faults are prevented.

Description

One-way valve

Technical Field

The utility model relates to the technical field of fluid control, in particular to a one-way valve.

Background

The check valve is mainly used for controlling forward and backward flow of fluid, is a valve body machine for enabling the fluid to flow in along an inlet of the valve body and flow out along an outlet of the valve body, is used for preventing backflow of the fluid, and is widely used on a hydraulic diaphragm (plunger) metering pump.

In the process of conveying liquid by a hydraulic diaphragm (plunger) metering pump, due to the fact that the flow speed is too high during liquid feeding, the valve core is unevenly stressed, the lifting process is inclined, the valve core is blocked and failed, the check effect cannot be achieved, and the normal operation of the hydraulic diaphragm (plunger) metering pump is affected.

Therefore, there is a need for a check valve that has a good check effect.

Disclosure of Invention

In view of the above, the present utility model aims to provide a one-way valve to solve the problem of poor check effect of the one-way valve in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a one-way valve comprises a cover body with an inner cavity formed inside, a liquid outlet arranged at the top of the cover body, a liquid inlet arranged at the bottom of the cover body, a valve core assembly arranged in the cover body and a guide assembly arranged at the bottom of the cover body;

the valve core assembly comprises a guide rod, a blocking part and a first spring, wherein the guide rod is arranged in the cover body and is in sliding connection with the top of the cover body;

the blocking part is arranged in the cover body and is tightly attached to the inner side wall of the cover body, and the first spring is arranged between the cover body and the blocking part;

the blocking part is provided with a communication port, and the guide assembly is communicated with the inside of the cover body through the liquid inlet.

Further, the guide assembly comprises a connecting part communicated with the inside of the cover body through the liquid inlet, a liquid guide cover arranged at the bottom of the connecting part and communicated with the connecting part, and a bump arranged on the inner side wall of the connecting part at intervals.

Further, the buffer parts are uniformly arranged on the inner top surface of the cover body.

Further, the blocking part is in sliding connection with the inner side wall of the cover body.

Further, one end of the first spring is arranged on the inner top surface of the cover body, and the other end of the first spring is arranged on the top surface of the blocking portion.

Further, a slot is formed in the inner side wall of the connecting part, and the protruding block is connected in a sliding mode in the slot;

the second spring is arranged in the groove, one end of the second spring is arranged on the inner bottom surface of the groove, and the other end of the second spring is arranged on the bottom surface of the protruding block.

Further, the liquid guide cover is funnel-shaped.

Further, the cover body is connected with the liquid guide cover through a conduit;

the guide pipe is arranged on one side of the connecting part, and the position of the guide pipe in the cover body is staggered with the position of the communication port.

Compared with the prior art, the utility model has the following advantages:

according to the utility model, liquid enters the cover body from the liquid inlet and flows out through the liquid outlet, the valve core assembly can play a role in unidirectional flow stopping, the guide assembly can play a role in guiding and buffering the liquid, normal operation of the valve core assembly is ensured, and jamming faults are prevented.

In the guide assembly, rivers are through the drain cover, are assembled to the one end that the internal diameter is little by the one end that the internal diameter is big, then enter into the inlet through connecting portion, and the position of inlet just is to the central point of blocking portion put, can make blocking portion atress even, can be steady upwards slide.

In addition, the blocking part can play a role in buffering the water flow from impacting the inner top surface of the cover body.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

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

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a schematic view of a guide assembly according to the present utility model;

FIG. 4 is a bottom view of the guide assembly of the present utility model;

FIG. 5 is a schematic view of a bump structure according to the present utility model;

fig. 6 is a schematic view of the working state of the present utility model.

Reference numerals illustrate:

100. a cover body; 101. a liquid outlet; 102. a liquid inlet; 103. a buffer section;

2. a valve core assembly; 200. a guide rod; 201. a first spring; 202. a communication port; 203. a blocking portion;

3. a guide assembly; 300. a liquid guiding cover; 301. a connection part; 3011. slotting; 3012. a second spring; 302. a bump;

4. a catheter.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The present utility model will be described in detail below with reference to fig. 1 to 6 in conjunction with the embodiments. As shown in fig. 1, the direction facing the cover 100 is the front of the present utility model.

As a whole, as shown in fig. 1 to 2, the check valve includes a housing 100 having an inner cavity formed therein, a liquid outlet 101 provided at the top of the housing 100, a liquid inlet 102 provided at the bottom of the housing 100, a valve core assembly 2 provided in the housing 100, and a guide assembly 3 provided at the bottom of the housing 100.

In detail, the liquid enters the cover body 100 from the liquid inlet 102, and flows out through the liquid outlet 101, so that the valve core assembly 2 can play a role in unidirectional flow stopping, and the guide assembly 3 can play a role in guiding and buffering the liquid, so that the normal operation of the valve core assembly 2 is ensured.

As shown in fig. 1 and fig. 2, the valve core assembly 2 includes a guide rod 200 disposed inside the housing 100 and slidably connected to the top of the valve housing 100, a blocking portion 203 disposed at the bottom end of the guide rod 200, and a first spring 201 sleeved on the guide rod 200. The blocking portion 203 is in the housing 100 and closely contacts the inner sidewall of the housing 100, and the first spring 201 is between the housing 100 and the blocking portion 203. The guide assembly 3 is communicated with the inside of the cover body 100 through the liquid inlet 102, and the blocking part 203 is provided with a communication port 202.

In this embodiment, the guide bar 200 is preferably cylindrical, and the guide bar 200 is disposed inside the housing 100, with its top end penetrating out of the top of the housing 100 and slidably connected thereto. As shown in fig. 1, the blocking portion 203 abuts against the inner bottom surface of the cover 100, and blocks the liquid inlet 102.

In particular, as shown in fig. 6, the water flow is driven by the guide assembly 3 to enter the liquid inlet 102, the blocking portion 203 is driven by the force of the water flow to operate upwards, the guide rod 200 slides upwards, so that the first spring 201 is compressed, and the water flow enters the cover 100 from the liquid inlet 102, then passes through the communication port 202 on the blocking portion 203, and finally flows out from the liquid outlet 101. When no water flows to drive the blocking part 203, the first spring 201 resets, the blocking part 203 continuously abuts against the inner bottom surface of the cover body 100, and if water flows in from the liquid outlet 101, the water cannot flow out from the liquid inlet 102 due to the blocking of the blocking part 203. Thereby achieving the effect of unidirectional flow stopping.

As shown in fig. 2, the shape of the blocking portion 203 is formed inside the cover 100, and is tightly attached to the inner sidewall of the cover 100 during operation, so as to prevent water flow from leaking from the gap. In order to facilitate the blocking part 203 to stably move up and down in the cover 100 under the impact of water flow, the blocking part 203 is slidably connected with the inner side wall of the cover 100, preferably a T-shaped chute and a slide rail matched with the T-shaped chute are adopted. The shape of the cover 100 is limited in fig. 2, and may be rectangular or cylindrical, which is not further limited herein.

The first spring 201 is located between the inner top surface of the cover 100 and the blocking portion 203 inside the cover 100, and in order to increase the stability of the first spring 201, one end of the first spring 201 is disposed on the inner top surface of the cover 100, and the other end is disposed on the top surface of the blocking portion 203.

As shown in fig. 3 to 5, the guide assembly 3 is composed of a connection portion 301, a liquid guiding cover 300 and a bump 302, wherein the connection portion 301 is fixedly installed at the bottom of the cover 100, and the contour of the connection portion 301 is shaped along with the liquid inlet 102, and is communicated with the interior of the cover 100 through the liquid inlet 102. The liquid guiding cover 300 is installed at the bottom of the connecting part 301 and communicated, and preferably has a funnel shape, and the specific arrangement mode is as follows: one end of the liquid guiding cover 300, which is communicated with the connecting part 301, is formed on the connecting part 301, and one end of the liquid guiding cover 300, which has a small inner diameter, is connected with the connecting part 301.

In this embodiment, the water flow passes through the liquid guiding cover 300, is collected from the end with the large inner diameter to the end with the small inner diameter, and then enters the liquid inlet 102 through the connecting portion 301, and the position of the liquid inlet 102 is opposite to the central position of the blocking portion 203, so that the blocking portion 203 is stressed uniformly, and can slide upwards stably, and no jamming phenomenon occurs.

Based on the above arrangement, as shown in fig. 4, when the water flows through the collecting part 301, in order to prevent the water from flowing too much and suddenly impacting the blocking part 203, the inner side wall of the connecting part 301 is provided with the protrusions 302 at intervals, one surface of the protrusions 302 contacting with the water flow is provided with a water inclined surface, and the top of the inclined surface is higher than the bottom, when the water flow hits the inclined surface, the buffer effect is achieved, and then the inclined surface is conformed to the inclination trend of the inclined surface, and finally the water enters the liquid inlet 102.

It should be further noted that, as shown in fig. 5, in order to prevent the bump 302 from being impacted for a long time, the service life of the bump 302 is reduced, the inner sidewall of the connecting portion 301 is provided with a slot 3011, and the bump 302 is slidingly connected in the slot 3011; a second spring 3012 is arranged in the slot 3011, one end of the second spring 3012 is arranged at the inner bottom surface of the slot 3011, and the other end is arranged at the bottom surface of the bump 302.

When the impinging water flow is strong, the protruding block 302 can slide into the slot 3011, and when the water flow is regulated, the second spring 3012 resets to drive the protruding block 302 to protrude from the slot 3011.

In addition, as shown in fig. 2, in order to prevent the liquid water flowing into the cover 100 from flowing out of the liquid outlet 101 and striking the inner top surface of the cover 100, a buffer 103 is provided on the inner top surface of the cover 100, and the buffer 103 is made of rubber material, thereby having a buffering function.

As a preferable configuration, as shown in fig. 2, the cover body 100 is connected to the liquid guiding cover 300 through the pipe 4, and the pipe 4 is located at one side of the connection portion 301. When the blocking part 203 slides upwards, the liquid water flow in the liquid guide cover 300 can enter the cover body 100 from the guide pipe 4 to play a certain role in diversion, so that the water is prevented from flowing through to strike the blocking part 203 and the stability is damaged.

It should be noted that the conduits 4 should be uniformly arranged, so that the stress on each position of the blocking portion 203 is uniform.

When the blocking portion 203 abuts against the inner bottom surface of the housing 100, the conduit 4 is not communicated with the communication port 202, and water is prevented from flowing out of the housing directly from the conduit 4 after the last entry of the water from the blocking portion 203.

In order to ensure the tightness after the blocking part 203 is abutted against the inner bottom surface of the cover body 100, a rubber sealing ring which follows the contour of the communication port and the liquid inlet can be arranged.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A one-way valve, characterized in that:

the valve comprises a cover body (100) with an inner cavity formed inside, a liquid outlet (101) arranged at the top of the cover body (100), a liquid inlet (102) arranged at the bottom of the cover body (100), a valve core assembly (2) arranged in the cover body (100) and a guide assembly (3) arranged at the bottom of the cover body (100);

the valve core assembly (2) comprises a guide rod (200) which is arranged in the cover body (100) and is in sliding connection with the top of the cover body (100), a blocking part (203) which is arranged at the bottom end of the guide rod (200) and a first spring (201) which is sleeved on the guide rod (200);

the blocking part (203) is arranged in the cover body (100) and is tightly attached to the inner side wall of the cover body (100), and the first spring (201) is arranged between the cover body (100) and the blocking part (203);

the blocking part (203) is provided with a communication port (202), and the guide assembly (3) is communicated with the inside of the cover body (100) through the liquid inlet (102).

2. A one-way valve according to claim 1, wherein:

the guide assembly (3) comprises a connecting part (301) communicated with the inside of the cover body (100) through the liquid inlet (102), a liquid guide cover (300) arranged at the bottom of the connecting part (301) and communicated with the connecting part, and protruding blocks (302) arranged on the inner side wall of the connecting part (301) at intervals.

3. A one-way valve according to claim 1, wherein:

buffer parts (103) are uniformly arranged on the inner top surface of the cover body (100).

4. A one-way valve according to claim 1, wherein:

the blocking part (203) is in sliding connection with the inner side wall of the cover body (100).

5. A one-way valve according to claim 1, wherein:

one end of the first spring (201) is arranged on the inner top surface of the cover body (100), and the other end of the first spring is arranged on the top surface of the blocking part (203).

6. A one-way valve according to claim 2, wherein:

the inner side wall of the connecting part (301) is provided with a slot (3011), and the convex block (302) is connected in a sliding way in the slot (3011);

a second spring (3012) is arranged in the slot (3011), one end of the second spring (3012) is arranged at the inner bottom surface of the slot (3011), and the other end of the second spring is arranged at the bottom surface of the protruding block (302).

7. A one-way valve according to claim 2, wherein:

the liquid guide cover (300) is funnel-shaped.

8. A one-way valve according to claim 2, wherein:

the cover body (100) is connected with the liquid guide cover (300) through a conduit (4);

the guide pipe (4) is arranged on one side of the connecting part (301), and the position of the guide pipe (4) in the cover body (100) is staggered with the position of the communication port (202).