Metering pump one-way valve for conveying high-viscosity medium

Abstract

The utility model belongs to the field of fluid machinery, and discloses a metering pump one-way valve for conveying high-viscosity media, which comprises a valve casing component, a medium channel is arranged on the valve casing component, a valve port is arranged on the medium channel, a spring seat, a spring and a valve ball are sequentially arranged in the medium channel from top to bottom, and the valve ball is used for blocking the valve port. The spring seat comprises a seat body and a stroke limiting column arranged at the lower end of the seat body, the spring is connected between the seat body and the valve ball, and when the valve ball moves upwards to the maximum stroke position under the action of medium pressure, the valve ball abuts against the stroke limiting column. The stroke limiting column protruding downwards is arranged on the spring seat, when the valve ball moves upwards to the maximum stroke position under the action of medium pressure, the valve ball abuts against the stroke limiting column, and therefore the stroke of the valve ball is reduced, the valve ball can fall faster, medium backflow is reduced, and the flow accuracy of the one-way valve is improved. And the compression stroke of the spring is reduced along with the valve ball, so that the service life of the spring is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of fluid machinery, in particular to a one-way valve for a metering pump for conveying high-viscosity media. Background Art

[0002] When the one-way valve conveys high-viscosity media, the valve ball will fall more slowly due to the viscosity of the medium, so that the medium will flow back, resulting in inaccurate flow. In addition, the existing one-way valve ball stroke is too large, which can easily lead to excessive compression of the spring, making the spring easy to break and affecting the service life of the spring. Utility Model Content

[0003] The utility model aims to provide a one-way valve for a metering pump for conveying high-viscosity media, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A one-way valve for a metering pump that transports high-viscosity media comprises a valve housing assembly, a medium channel is arranged on the valve housing assembly, a valve port is arranged on the medium channel, a spring seat, a spring and a valve ball are arranged in the medium channel from top to bottom in sequence, the valve ball is used to block the valve port, the spring seat comprises a seat body and a stroke limiting column arranged at the lower end of the seat body, the spring is connected between the seat body and the valve ball, and when the valve ball moves up to the maximum stroke under the action of the medium pressure, it abuts against the stroke limiting column.

[0006] Furthermore, a through hole is arranged on the seat body.

[0007] Furthermore, a plurality of through holes are evenly distributed on the seat body.

[0008] Furthermore, the valve housing assembly includes a valve cover and a valve seat which are arranged above and below, and the inner diameter of the valve cover is larger than the inner diameter of the valve seat, so that the valve port is formed between the valve seat and the valve cover.

[0009] Furthermore, a groove penetrating from top to bottom is provided on the inner wall of the valve cover.

[0010] Furthermore, a plurality of vertically penetrating grooves are evenly distributed on the inner wall of the valve cover.

[0011] Furthermore, the valve housing assembly also includes a flange tube, the spring seat is arranged at the upper end of the valve cover, and the flange tube is arranged at the upper end of the spring seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a stroke limiting column protruding downward on the spring seat. When the valve ball moves up to the maximum stroke under the action of the medium pressure, it abuts against the stroke limiting column, thereby reducing the stroke of the valve ball, making the valve ball fall faster, reducing the medium backflow, and improving the flow accuracy of the one-way valve. Moreover, the compression stroke of the spring will be reduced along with the valve ball, thereby improving the service life of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the external structure of the utility model.

[0016] In the figure: flange pipe 1, spring seat 2, seat body 20, stroke limiting column 21, through hole 22, valve cover 3, groove 30, valve seat 4, valve port 5, spring 6, valve ball 7. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 2 A one-way valve for a metering pump for conveying high-viscosity media includes a valve housing assembly, a medium channel is arranged on the valve housing assembly, a valve port 5 is arranged on the medium channel, a spring seat 2, a spring 6 and a valve ball 7 are arranged in the medium channel from top to bottom, the valve ball 7 is used to block the valve port 5, the spring seat 2 includes a seat body 20 and a stroke limiting column 21 arranged at the lower end of the seat body 20, the spring 6 is connected between the seat body 20 and the valve ball 7, and when the valve ball 7 moves up to the maximum stroke under the action of the medium pressure, it abuts against the stroke limiting column 21.

[0019] It can be understood that in the above technical solution, the utility model provides a downwardly protruding stroke limiting column 21 on the spring seat 2. When the valve ball 7 moves up to the maximum stroke under the action of the medium pressure, it abuts against the stroke limiting column 21, thereby reducing the stroke of the valve ball 7, making the valve ball 7 fall faster, reducing the medium backflow, and improving the flow accuracy of the one-way valve. Moreover, the compression stroke of the spring 6 will be reduced along with the valve ball 7, thereby improving the service life of the spring 6.

[0020] Continue reading Figure 1 In one embodiment of the present invention, a through hole 22 is provided on the seat body 20. Specifically, a plurality of through holes 22 are evenly distributed on the seat body 20, so that the fluidity of the medium can be improved.

[0021] Continue reading Figure 1 and Figure 2 In one embodiment of the utility model, the valve housing assembly includes a valve cover 3 and a valve seat 4 arranged above and below, the inner diameter of the valve cover 3 is larger than the inner diameter of the valve seat 4, thereby forming a valve port 5 between the valve seat 4 and the valve cover 3, and the valve ball 7 is slightly smaller than the inner diameter of the valve cover 3 and larger than the inner diameter of the valve seat 4.

[0022] Continue reading Figure 1 In one embodiment of the utility model, a groove 30 is provided on the inner wall of the valve cover 3. Specifically, a plurality of grooves 30 are evenly distributed on the inner wall of the valve cover 3. When the valve ball 7 leaves the valve port 5, the medium can pass through the grooves 30, thereby increasing the flow rate of the medium.

[0023] Continue reading Figure 1 and Figure 2 In one embodiment of the utility model, the valve housing assembly further comprises a flange pipe 1, a spring seat 2 is arranged on the upper end of the valve cover 3, and the flange pipe 1 is arranged on the upper end of the spring seat 2. When the utility model is installed on the pump body of the metering pump, the lower end flange of the flange pipe 1 is connected to the pump body by bolts, so that the spring seat 2, the valve cover 3, the valve seat 4, the valve ball 7, the spring 6 and other structures are pressed into the installation hole of the pump body.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A one-way valve for a metering pump for conveying high-viscosity media, characterized in that: The invention comprises a valve housing assembly, wherein a medium channel is arranged on the valve housing assembly, a valve port (5) is arranged on the medium channel, a spring seat (2), a spring (6) and a valve ball (7) are arranged in order from top to bottom in the medium channel, the valve ball (7) is used to block the valve port (5), the spring seat (2) comprises a seat body (20) and a stroke limiting column (21) arranged at the lower end of the seat body (20), the spring (6) is connected between the seat body (20) and the valve ball (7), and when the valve ball (7) moves up to the maximum stroke under the action of the medium pressure, it abuts against the stroke limiting column (21).

2. A one-way valve for a metering pump for conveying high-viscosity media according to claim 1, characterized in that: A through hole (22) is provided on the seat body (20).

3. A one-way valve for a metering pump for conveying high-viscosity media according to claim 1, characterized in that: The seat body (20) is evenly distributed with a plurality of through holes (22).

4. A one-way valve for a metering pump for conveying high-viscosity media according to claim 1, characterized in that: The valve housing assembly comprises a valve cover (3) and a valve seat (4) arranged above and below, the inner diameter of the valve cover (3) being larger than the inner diameter of the valve seat (4), thereby forming the valve port (5) between the valve seat (4) and the valve cover (3).

5. A one-way valve for a metering pump for conveying high-viscosity media according to claim 4, characterized in that: The inner wall of the valve cover (3) is provided with a groove (30) which passes through from top to bottom.

6. A one-way valve for a metering pump for conveying high-viscosity media according to claim 4, characterized in that: The inner wall of the valve cover (3) is evenly distributed with a plurality of grooves (30) that penetrate vertically.

7. A one-way valve for a metering pump for conveying high-viscosity media according to claim 4, characterized in that: The valve housing assembly further comprises a flange pipe (1), the spring seat (2) being arranged at the upper end of the valve cover (3), and the flange pipe (1) being arranged at the upper end of the spring seat (2).

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