Small check valve

Abstract

According to the small check valve, the protruding ring is arranged in the valve body, the first thread part is arranged on the inner wall of the protruding ring, and the second thread part is arranged on the outer wall of the valve element ring, so that a valve element structure can be directly screwed out of the valve body, and a valve plug can be directly replaced on the outer wall of the valve body; the valve plug is fixed in the round installation groove in the valve element ring through the pressing ring, the pressing ring can be directly screwed out of the round installation groove by inserting a tool into the insertion grooves in the two cones which are collinear with each other, and therefore the valve plug can be pulled out of the round installation groove, and the valve plug can be replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a small check valve belongs to check valve technical field. BACKGROUND

[0002] Check valve, also known as one-way valve, is a kind of valve for controlling the direction of fluid flow. Its main function is to prevent fluid from flowing in reverse in the system to protect the safety of equipment and system. Check valve is usually used in pipeline system to ensure that fluid can only flow in one direction, avoiding the situation of reverse flow. The valve core structure of check valve is the core component of check valve, once the valve core structure of check valve has a problem, it will greatly affect the sealing effect of check valve, at this time, the valve plug structure of check valve needs to be repaired in time. But the valve core structure of check valve in the prior art is fixedly connected inside the valve body or integrally formed with the valve body by casting, and the maintenance of the valve core structure is not convenient. Therefore, the utility model provides a small check valve to solve the above problems. SUMMARY

[0003] Based on the above background, the purpose of the utility model is to provide a small check valve to solve the problems in the background art.

[0004] The utility model provides the following technical scheme:

[0005] A small check valve, comprising a valve body, the left end of the valve body is provided with a water outlet, the right end of the valve body is provided with a water inlet, the inside of the valve body is provided with a protruding ring, the inner wall of the protruding ring is provided with a first threaded part, the first threaded part is threadedly connected with a valve core structure, the valve core structure comprises a valve core ring, the outer wall of the valve core ring is provided with a second threaded part, the second threaded part is threadedly connected with the first threaded part, a plurality of flow channels are circumferentially arranged on the valve core ring, a circular mounting groove is arranged between the plurality of flow channels on the left side wall of the valve core ring, a third threaded part is arranged on the inner wall of the circular mounting groove close to the outer side, a compression ring is arranged in the circular mounting groove close to the outer part, a fourth threaded part is arranged on the outer wall of the compression ring, the fourth threaded part and the third threaded part are threadedly connected to threadedly connect the compression ring in the mounting groove, a valve plug is arranged between the compression ring and the right side wall of the mounting groove in the mounting groove, and a dismounting structure is arranged on the valve plug and the compression ring.

[0006] Preferably, the dismounting structure comprises a conical body and a conical body-shaped through hole, the conical body is fixedly connected to the left side of the compression ring, the conical body-shaped through hole is arranged on the valve plug, and an insertion slot is arranged on the end face of one end of the conical body close to the water outlet.

[0007] As preferred, the plurality of conical bodies are circumferentially and equidistantly arranged on the compression ring, and the number of the through holes of the conical bodies corresponds to the number and position of the conical bodies.

[0008] As preferred, the valve core ring is provided with a hemispherical flow guide block in the center of the right side wall.

[0009] As preferred, the valve body is provided with a fifth threaded part on the outer wall of the water outlet end and the water inlet end, and the proximal end of the fifth threaded part is provided with a hexagonal screwing part.

[0010] As preferred, the valve plug is made of flexible material.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The utility model discloses a small check valve, through setting the convex ring in the valve body, and setting the first threaded part on the inner wall of the convex ring, through setting the second threaded part on the outer wall of the valve core ring, the valve core structure can be directly screwed out of the valve body, the replacement of the valve plug can be directly carried out on the outer wall of the valve body, the valve plug is fixed in the circular mounting groove on the valve core ring through the compression ring, the compression ring can be directly screwed out of the circular mounting groove through the tool inserted into the insertion slot on the two conical bodies in line, so that the valve plug can be pulled out of the circular mounting groove, and the valve plug is replaced. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to the provided drawings without paying the creative labor.

[0014] Figure 1 It is the three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is the half sectional view of the utility model;

[0016] Figure 3 It is the valve core ring structure schematic view of the utility model;

[0017] Figure 4 It is the compression ring structure schematic view of the utility model;

[0018] Figure 5 It is the valve plug structure schematic view of the utility model.

[0019] In the figure: 1, valve body; 2, water outlet end; 3, water inlet end; 4, convex ring; 5, first threaded part; 6, valve core ring; 7, second threaded part; 8, flow channel; 9, mounting groove; 10, third threaded part; 11, pressing ring; 12, fourth threaded part; 13, valve plug; 14, cone; 15, through hole; 16, insertion slot; 17, semispherical flow guide block; 18, fifth threaded part; 19, screwing part. DETAILED DESCRIPTION

[0020] The technical scheme of the present application will be further described in detail below with reference to specific examples and in conjunction with the drawings. It should be understood that the implementation of the present application is not limited to the following examples, and any form of modification and / or change of the present application will fall within the scope of protection of the present application.

[0021] In the present application, unless specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or commonly used in the art. The methods in the following examples are conventional methods in the art, unless otherwise specified. The components or equipment in the following examples are general standard components or components known to those skilled in the art, and their structure and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0022] The embodiments of the present application will be described in detail below with reference to the drawings. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the embodiments of the present application. However, one or more embodiments can be implemented without these specific details.

[0023] As Figures 1-5As shown, a small check valve, including valve body 1, the left end of the valve body 1 is provided with water outlet 2, the right end of the valve body 1 is provided with water inlet 3, the inside of the valve body 1 is centrally provided with a raised ring 4, the inner wall of the raised ring 4 is provided with a first threaded portion 5, the first threaded portion 5 is threadedly connected with a valve core structure, the valve core structure comprises a valve core ring 6, the outer wall of the valve core ring 6 is provided with a second threaded portion 7, the second threaded portion 7 is threadedly connected with the first threaded portion 5, a plurality of flow channels 8 are circumferentially provided on the valve core ring 6, a circular mounting groove 9 is provided between the plurality of flow channels 8 on the left side wall of the valve core ring 6, a third threaded portion 10 is provided on the inner wall of the circular mounting groove 9 close to the outer side, a compression ring 11 is provided in the circular mounting groove 9 close to the outer portion, a fourth threaded portion 12 is provided on the outer wall of the compression ring 11, the fourth threaded portion 12 and the third threaded portion 10 are threadedly connected so as to threadedly connect the compression ring 11 in the mounting groove 9, a valve plug 13 is provided between the compression ring 11 and the right side wall of the mounting groove 9 in the mounting groove 9, the valve plug 13 is made of flexible material, and a dismounting structure is provided on the valve plug 13 and the compression ring 11; the dismounting structure comprises a conical body 14 and a conical hole 15, the conical body 14 is fixedly connected to the left side of the compression ring 11, the conical hole 15 is formed in the valve plug 13, and an insertion slot 16 is formed in the end face of one end of the conical body 14 close to the water outlet 2; a plurality of conical bodies 14 are circumferentially and equidistantly arranged on the compression ring 11, and the number and positions of the conical holes 15 correspond to the number and positions of the conical bodies 14.

[0024] In the above technical scheme, the raised ring 4 is arranged in the valve body 1, the first threaded portion 5 is formed on the inner wall of the raised ring 4, the second threaded portion 7 is formed on the outer wall of the valve core ring 6, so that the valve core structure can be directly screwed out of the valve body 1, the valve plug 13 can be directly replaced on the outer wall of the valve body 1, the valve plug 13 is fixed in the circular mounting groove 9 on the valve core ring 6 by the compression ring 11, the compression ring 11 can be directly screwed out of the circular mounting groove 9 by inserting a tool into the insertion slots 16 on the two conical bodies 14 which are collinear, so that the valve plug 13 can be pulled out of the circular mounting groove 9, and the valve plug 13 can be replaced.

[0025] In the utility model, the valve core ring 6 is provided with a semispherical flow guide block 17 which is integrally formed with the valve core ring 6 on the right side wall, the semispherical flow guide block can guide the water flow of the water inlet 3, and the water flow can flow through the flow channels 8.

[0026] In the utility model, the fifth threaded part 18 is arranged on the outer wall of the water outlet end 2 and the outer wall of the water inlet end 3 of the valve body 1, the proximal end of the fifth threaded part 18 on the valve body 1 is provided with a hexagonal screwing part 19, the screwing part 19 is arranged, and when the check valve is installed, the screwing part 19 can be used for clamping and connecting with the pipeline through the fifth threaded part 18.

[0027] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the method and core idea of the present application. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principle of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A small check valve characterized by: The utility model provides a valve body (1), the valve body (1) left end is equipped with the water outlet end (2), the valve body (1) right end is equipped with the water inlet end (3), the inside central part of valve body (1) is equipped with the convex ring (4), the inner wall of convex ring (4) is equipped with the first threaded portion (5), the first threaded portion (5) is threadedly connected with the valve core structure, the valve core structure includes the valve core ring (6), the outer wall of valve core ring (6) is equipped with the second threaded portion (7), the second threaded portion (7) is threadedly connected with the first threaded portion (5), the valve core ring (6) is circumferentially equipped with a plurality of flow channels (8), the circular mounting groove (9) is equipped between a plurality of flow channels (8) on the left side wall of valve core ring (6), the third threaded portion (10) is equipped on the inner wall of circular mounting groove (9) near the outside, the compression ring (11) is equipped in the circular mounting groove (9) near the outside, the fourth threaded portion (12) is equipped on the outer wall of compression ring (11), the fourth threaded portion (12) and the third threaded portion (10) are threadedly connected so as to threadedly connect the compression ring (11) in the mounting groove (9), the valve plug (13) is arranged between the compression ring (11) and the right side wall of mounting groove (9) in the mounting groove (9), and the dismounting structure is arranged on the valve plug (13) and the compression ring (11).

2. A compact check valve according to claim 1, characterized in that: The dismounting structure includes a conical body (14) and a conical through hole (15), the conical body (14) is fixedly connected to the left side of the compression ring (11), the conical through hole (15) is arranged on the valve plug (13), and the end face of the conical body (14) near the water outlet end (2) is provided with a slot (16).

3. A compact check valve according to claim 2, characterized in that: The plurality of conical bodies (14) are circumferentially and equidistantly arranged on the compression ring (11), and the number of the conical through holes (15) corresponds to the number and positions of the conical bodies (14) one by one.

4. A compact check valve according to claim 3, wherein: The right side wall of the valve core ring (6) is provided with a hemispherical flow guide block (17) integrally formed with the valve core ring (6).

5. A compact check valve according to claim 1, wherein: The outer wall of the water outlet end (2) and the outer wall of the water inlet end (3) of the valve body (1) are provided with a fifth threaded portion (18), and the proximal end of the fifth threaded portion (18) of the valve body (1) is provided with a hexagonal screwing portion (19).

6. A compact check valve according to claim 1, wherein: The valve plug (13) is made of flexible material.

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