High-wear-resistance vertical check valve structure

Abstract

The utility model discloses a vertical check valve structure with high wear resistance, which comprises a valve body, a spring fixing seat, an auxiliary valve clack, a main valve clack, an auxiliary valve seat, a main valve seat and a compression spring, the valve body is a hollow valve body formed by splicing an upper valve body and a lower valve body, the lower end of the valve body is a medium inlet, and the upper end of the valve body is a medium outlet; the direction of an outlet is vertical or horizontal, the spring fixing seat is fixedly connected to the upper portion of the interior of the valve body, an annular sliding sleeve is arranged in the center of the spring fixing seat, a medium through hole is formed in the outer side of the spring fixing seat, and the auxiliary valve clack is movably connected to the interior of the annular sliding sleeve of the spring fixing seat. The main valve clack is fixedly connected to a mounting through hole in the middle of the auxiliary valve seat, the auxiliary valve clack is sleeved with the compression spring, the two ends of the compression spring extrude the spring fixing seat and the auxiliary valve clack respectively, the auxiliary valve seat is fixedly connected to the lower portion in the valve body, and the main valve seat is sleeved with a mounting through hole in the auxiliary valve clack. The utility model has the advantages of simple structure, safety, effectiveness, good use effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of check valve structure design, in particular to a highly wear-resistant vertical check valve structure. Background Art

[0002] A check valve is a valve with a circular disc as the opening and closing part, which blocks the backflow of the medium by its own weight and the pressure of the medium. It belongs to the automatic valve category and is also called a non-return valve, one-way valve, reflux valve or isolation valve.

[0003] When using a check valve, when the medium is mortar or dust, due to the presence of harder particles in the medium, these particles will cause greater wear to the inside of the valve body when flowing through it. In addition, when the valve body is closed, the remaining particles will be retained in the seal and squeezed onto the valve seat by the valve disc, which will also cause damage to the internal components. These will all reduce the service life of the check valve. Summary of the invention

[0004] The purpose of the utility model is to provide a highly wear-resistant vertical check valve structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly wear-resistant vertical check valve structure, comprising: a valve body, a spring fixed seat, an auxiliary valve disc, a main valve disc, an auxiliary valve seat, a main valve seat, and a compression spring. The valve body is a hollow valve body formed by splicing an upper valve body and a lower valve body. The lower end of the valve body is a medium inlet, and the upper end is a medium outlet, and the outlet direction is a vertical direction or a horizontal direction. The spring fixed seat is fixedly connected to the upper part of the inner part of the valve body, and the center position of the spring fixed seat is an annular sliding sleeve, and a medium through hole is opened on the outer side of the spring fixed seat. The auxiliary valve disc is a main valve disc, an auxiliary valve seat, a main valve seat, and a compression spring. The valve body is a hollow valve body formed by splicing an upper valve body and a lower valve body. The lower end of the valve body is a medium inlet, and the upper end is a medium outlet, and the outlet direction is a vertical direction or a horizontal direction. The spring fixed seat is fixedly connected to the upper part of the inner part of the valve body, and the center position of the spring fixed seat is an annular sliding sleeve, and a medium through hole is opened on the outer side of the spring fixed seat. The valve disc is movably connected in the annular sliding sleeve of the spring fixing seat, the main valve disc is fixedly connected to the mounting through hole in the middle position of the auxiliary valve seat, the compression spring is sleeved on the auxiliary valve disc, and the two ends of the compression spring respectively squeeze the spring fixing seat and the auxiliary valve disc, the auxiliary valve seat is fixedly connected to the lower part of the inner part of the valve body, and under the action of the compression spring, the auxiliary valve disc is squeezed on the upper end surface of the auxiliary valve seat, and the main valve seat is sleeved on the mounting through hole inside the auxiliary valve disc. Under the action of the medium pressure, the main valve disc automatically self-primes on the inner edge of the upper end of the main valve seat to achieve a sealing effect and prevent the medium from flowing back.

[0006] Furthermore, the main valve disc and the main valve seat are highly wear-resistant ceramic components.

[0007] Furthermore, an annular groove is provided on the upper end face of the auxiliary valve seat, and a Stellite alloy gasket is fixed in the groove. An annular protrusion is provided on the lower end face of the auxiliary valve disc, and the annular protrusion matches the Stellite alloy gasket. Under the action of the compression spring, the annular protrusion is squeezed on the Stellite alloy gasket.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] 1. The high wear-resistant vertical check valve structure of the utility model, when in use, the medium enters the valve body from the lower end of the valve body. When the medium pressure at the lower end is greater than that at the upper end, the auxiliary valve disc and the main valve disc will be lifted up, the compression spring will be further compressed, and the medium will flow out from the upper end of the valve body; if the medium pressure at the lower end is less than that at the upper end, the auxiliary valve disc and the main valve disc will be squeezed downward by the compression spring and the medium pressure at the upper end, and the valve body will be closed;

[0010] 2. The high wear-resistant vertical check valve structure of the utility model has a main valve disc and a main valve seat which are highly wear-resistant ceramic components. The wear-resistant characteristics of ceramic materials are utilized to reduce the wear of the valve body during the flow of the medium;

[0011] 3. The high wear-resistant vertical check valve structure of the utility model is provided with a Stellite alloy gasket on the upper end face of the auxiliary valve seat, and a corresponding annular protrusion is provided on the lower end face of the auxiliary valve disc. When the valve body is closed, the annular protrusion is squeezed on the Stellite alloy gasket, and on the one hand, another seal is formed. The alloy sealing surface of the auxiliary valve seat and the auxiliary valve disc protrusion can effectively reduce the wear of the sealing surface on the medium. At the same time, the support formed by the two can prevent the auxiliary valve disc from contacting the auxiliary valve seat, and prevent the particles between the two from damaging the components when squeezed. On the other hand, it can prevent the main valve disc and the main valve seat from having a strong collision when the valve body is closed, thereby protecting the main valve disc and the main valve seat made of ceramic materials.

[0012] The utility model has the advantages of simple structure, safety, effectiveness and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] In the figure: 1-valve body; 2-spring fixing seat; 3-auxiliary valve disc; 4-main valve disc; 5-auxiliary valve seat; 6-main valve seat; 7-compression spring; 8-Stellite alloy gasket; 9-annular protrusion. DETAILED DESCRIPTION

[0015] 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.

[0016] See also Figure 1The utility model provides a highly wear-resistant vertical check valve structure, including: a valve body 1, a spring fixing seat 2, an auxiliary valve disc 3, a main valve disc 4, an auxiliary valve seat 5, a main valve seat 6, and a compression spring 7. The valve body 1 is a hollow valve body formed by splicing an upper valve body and a lower valve body. The lower end of the valve body 1 is a medium inlet, and the upper end is a medium outlet, and the outlet direction is a vertical direction or a horizontal direction. The spring fixing seat 2 is fixedly connected to the upper part of the valve body 1. The center position of the spring fixing seat 2 is an annular sliding sleeve, and a medium through hole is opened on the outer side of the spring fixing seat 2. The auxiliary valve disc 3 is movably connected in the annular sliding sleeve of the spring fixing seat 2, the main valve flap 4 is fixedly connected to the mounting through hole in the middle position of the auxiliary valve flap 3, the compression spring 7 is sleeved on the auxiliary valve flap 3, and the two ends of the compression spring 7 respectively squeeze the spring fixing seat 2 and the auxiliary valve flap 3, the auxiliary valve seat 5 is fixedly connected to the lower part of the valve body 1, under the action of the compression spring 7, the auxiliary valve flap 3 is squeezed on the upper end surface of the auxiliary valve seat 5, the main valve seat 6 is sleeved on the mounting through hole in the auxiliary valve seat 5, and under the action of the compression spring 7, the main valve flap 4 is squeezed on the inner edge of the upper end of the main valve seat 6.

[0017] When in use, the medium enters the valve body 1 from the lower end of the valve body 1. When the medium pressure at the lower end is greater than that at the upper end, the auxiliary valve flap 3 and the main valve flap 4 will be lifted up, the compression spring 7 will be further compressed, and the medium will flow out from the upper end of the valve body 1; if the medium pressure at the lower end of the valve body 1 is less than that at the upper end, the auxiliary valve flap 3 and the main valve flap 4 will be squeezed downward by the compression spring 7 and the pressure of the medium at the upper end, and the valve body 1 will be closed.

[0018] Furthermore, the main valve flap 4 and the main valve seat 6 are highly wear-resistant ceramic components.

[0019] The main valve disc 4 and the main valve seat 6 are highly wear-resistant ceramic components. The wear-resistant characteristics of ceramic materials are utilized to reduce the wear of the valve body during the flow of the medium.

[0020] Furthermore, an annular groove is formed on the upper end face of the auxiliary valve seat 5, and a Stellite alloy gasket 8 is fixed in the groove; an annular protrusion 9 is provided on the lower end face of the auxiliary valve disc 3, and the annular protrusion 9 matches the Stellite alloy gasket 8. Under the action of the compression spring 7, the annular protrusion 9 is squeezed onto the Stellite alloy gasket 8.

[0021] By arranging a Stellite alloy gasket 8 on the upper end face of the auxiliary valve seat 5 and correspondingly arranging an annular protrusion 9 on the lower end face of the auxiliary valve flap 3, when the valve body is closed, the annular protrusion 9 is squeezed on the Stellite alloy gasket 8, forming another seal on the one hand, and the raised alloy sealing surface of the auxiliary valve seat 5 and the auxiliary valve flap 3 can effectively reduce the wear of the sealing surface on the medium. At the same time, the support formed by the two can prevent the auxiliary valve flap 3 from contacting the auxiliary valve seat 5, and prevent the particles between the two from damaging the components when squeezed. On the other hand, it can prevent the main valve flap 4 and the main valve seat 6 from having a strong collision when the valve body is closed, thereby protecting the main valve flap 4 and the main valve seat 6 made of ceramic materials.

[0022] 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 highly wear-resistant vertical check valve structure, characterized in that: include: A valve body (1), a spring fixing seat (2), an auxiliary valve disc (3), a main valve disc (4), an auxiliary valve seat (5), a main valve seat (6), and a compression spring (7). The valve body (1) is a hollow valve body formed by splicing an upper valve body and a lower valve body. The lower end of the valve body (1) is a medium inlet, and the upper end is a medium outlet, and the outlet direction is a vertical direction or a horizontal direction. The spring fixing seat (2) is fixedly connected to the upper part of the valve body (1). The center position of the spring fixing seat (2) is an annular sliding sleeve, and the outer side of the spring fixing seat (2) is provided with a medium through hole. The auxiliary valve disc (3) is movably connected to the spring fixing seat (2). In the annular sleeve, the main valve disc (4) is fixedly connected to the mounting through hole in the middle position of the auxiliary valve disc (3), the compression spring (7) is sleeved on the auxiliary valve disc (3), and the two ends of the compression spring (7) respectively squeeze the spring fixing seat (2) and the auxiliary valve disc (3), the auxiliary valve seat (5) is fixedly connected to the lower part of the valve body (1), under the action of the compression spring (7), the auxiliary valve disc (3) is squeezed on the upper end surface of the auxiliary valve seat (5), the main valve seat (6) is sleeved on the mounting through hole in the auxiliary valve seat (5), and under the action of the medium pressure, the main valve disc (4) is squeezed on the inner edge of the upper end of the main valve seat (6).

2. A highly wear-resistant vertical check valve structure according to claim 1, characterized in that: The main valve flap (4) and the main valve seat (6) are highly wear-resistant ceramic components.

3. A highly wear-resistant vertical check valve structure according to claim 1, characterized in that: The upper end surface of the auxiliary valve seat (5) is provided with an annular groove, and a Stellite alloy gasket (8) is fixed in the groove. The lower end surface of the auxiliary valve flap (3) is provided with an annular protrusion (9), and the annular protrusion (9) matches the Stellite alloy gasket (8). Under the action of the compression spring (7), the annular protrusion (9) is squeezed onto the Stellite alloy gasket (8).

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