A sewage check valve

Abstract

The utility model discloses a sewage check valve, comprising a first valve body and a second valve body, the first valve body comprising a first connecting portion and a first circular tube portion, the second valve body comprising a second connecting portion and a second circular tube portion; the second connecting portion has a plug-in port adapted to an end portion of the first connecting portion, the first connecting portion being inserted into the plug-in port of the second connecting portion; a valve core assembly is detachably installed in the first valve body, the valve core assembly being arranged at the junction of the first connecting portion and the first circular tube portion; the first valve body and the second valve body are both made of plastic material, the first connecting portion and the first circular tube portion are integrally formed, and the second connecting portion and the second circular tube portion are integrally formed; the utility model has a simple structure, the first valve body, the second valve body and the valve core assembly are convenient to assemble, the connection with the pipeline is also installed at a later stage, the assembly and installation process is simplified, and the work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a sewage check valve. Background Art

[0002] The check valve can prevent the reverse flow of fluid and is widely used, such as smoke exhaust outlets of range hoods, sewage outlets, etc. Most of the existing check valves are integral structures, which are difficult to process. For this reason, someone designed a split check valve.

[0003] For example, the utility model patent with patent number CN202020636576.8 discloses a combined check valve, including a main body, which is composed of a first connecting pipe, a valve body pipe and a second connecting pipe, a connecting flange is provided on one side of the first connecting pipe, a first limit block is provided on the top of the outer wall on the other side of the first connecting pipe, a first limit block is provided on the top of the first limit block, and a second limit block is fixedly connected to the bottom outer wall of the first connecting pipe close to the first limit block.

[0004] The combined check valve provided by the above patent is composed of a detachably connected first connecting pipe, a valve body pipe and a second connecting pipe, and is a split check valve. This check valve has the advantage of being convenient for users to clean the valve body pipe, but its structure is still relatively complex, the subsequent installation process is complicated, and it is not suitable for use with pipes directly connected at both ends, and needs further improvement. Utility Model Content

[0005] The utility model aims to provide a sewage check valve, aiming to improve the problems of the existing split check valve in that the later installation process is complicated and the valve is not suitable for use with pipelines directly connected at both ends.

[0006] The utility model is implemented as follows: a sewage check valve comprises a first valve body and a second valve body, the first valve body comprises a first connecting portion and a first circular tube portion, the second valve body comprises a second connecting portion and a second circular tube portion; the second connecting portion has an insert port adapted to the end of the first connecting portion, the first connecting portion is inserted into the insert port of the second connecting portion; a valve core assembly is detachably installed in the first valve body, and the valve core assembly is arranged at the junction of the first connecting portion and the first circular tube portion.

[0007] Furthermore, an installation groove and a snap-on protrusion are provided on the inner wall of the first connecting part, and the valve core assembly includes a base and a sealing baffle. A hinged seat is provided at one end of the base, and the sealing baffle is hingedly connected to the hinged seat; the base is inserted into the installation groove, and its outer end is blocked by the snap-on protrusion.

[0008] Furthermore, the sealing baffle is a circular structure, and a ring-shaped rubber sealing structure is provided at its outer end.

[0009] Furthermore, the thickness of the mounting groove is greater than the thickness of two sides of the base, and the base is made of plastic material.

[0010] Furthermore, the buckle protrusion is in a conical structure with a thin outer end and a thick inner end, and the sum of the thickness of the inner end of the buckle protrusion and the thickness of both sides of the base is greater than the thickness of the installation groove.

[0011] Furthermore, a first limiting platform is provided on the inner wall of the first circular tube portion. The first limiting platform is in a circular ring shape and is used to limit the pipe inserted into the first circular tube portion.

[0012] Furthermore, a second limiting platform is provided on the inner wall of the second connecting portion, and the second limiting platform is used to limit the first connecting portion inserted into the second connecting portion.

[0013] Furthermore, a flow direction mark or a non-return direction mark is provided on the outer wall of the first valve body and / or the second valve body.

[0014] Furthermore, the first valve body and the second valve body are both made of plastic material, the first connecting portion and the first circular tube portion are integrally formed, and the second connecting portion and the second circular tube portion are integrally formed.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model has a simple structure, and the first valve body, the second valve body and the valve core assembly are easy to assemble, and the connection with the pipeline is also installed later, which simplifies the assembly and installation process and improves work efficiency.

[0017] 2. The first connection part and the first round tube part of the first valve body of the utility model are integrally formed, and the second connection part and the second round tube part of the second valve body are also integrally formed, and the first valve body and the second valve body are both made of plastic material. Thus, for each type of sewage check valve, only two molds need to be opened to carry out batch production of the first valve body and the second valve body, making the production of the first valve body and the second valve body very convenient.

[0018] 3. The valve core assembly of the utility model is fixed by snap-on method, and no screws are needed, so the structure is simpler and the installation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall cross section of the utility model;

[0021] Figure 3 It is a three-dimensional schematic diagram of the first valve body of the utility model viewed from the first connecting portion;

[0022] Figure 4 It is a three-dimensional schematic diagram of the first valve body of the utility model viewed from the first circular tube portion;

[0023] Figure 5 It is a three-dimensional schematic diagram of the second valve body of the utility model;

[0024] Figure 6 It is a three-dimensional schematic diagram of the valve core assembly of the utility model.

[0025] In the figure: 1. first valve body; 101. first connecting part; 102. first circular tube part; 103. mounting groove; 104. snap-fit ​​protrusion; 105. first limit platform; 2. second valve body; 201. second connecting part; 202. second circular tube part; 203. second limit platform; 3. valve core assembly; 301. base; 302. sealing baffle. DETAILED DESCRIPTION

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a sewage check valve comprises a first valve body 1, a second valve body 2 and a valve core assembly 3. The first valve body 1 comprises a first connection part 101 and a first circular tube part 102, and the second valve body 2 comprises a second connection part 201 and a second circular tube part 202; the second connection part 201 has a plug-in interface adapted to the end of the first connection part 101, and the first connection part 101 is inserted into the plug-in interface of the second connection part 201. The valve core assembly 3 is detachably arranged in the first valve body 1, and the valve core assembly 3 is arranged at the junction of the first connection part 101 and the first circular tube part 102. A flow direction mark or a check direction mark is arranged on the outer wall of the first valve body 1 and / or the second valve body 2 to prevent users from installing it in reverse.

[0029] like Figure 3 , Figure 4 and Figure 6As shown, the inner wall of the first connecting portion 101 of the first valve body 1 is provided with a mounting groove 103 and a buckle protrusion 104, and the valve core assembly 3 includes a base 301 and a sealing baffle 302, the sealing baffle 302 is a circular structure, and a circular ring-shaped rubber sealing structure is provided at its outer end. A hinge seat is provided at one end of the base 301, and the sealing baffle 302 is hingedly connected to the hinge seat. The thickness of the mounting groove 103 is greater than the thickness of both sides of the base 301, and both sides of the base 301 are inserted into the mounting groove 103. The buckle protrusion 104 is arranged on the outer side of the mounting groove 103, and the buckle protrusion 104 is a conical structure with a thin outer end and a thick inner end. The sum of the thickness of the inner end of the buckle protrusion 104 and the thickness of both sides of the base 301 is greater than the thickness of the mounting groove 103, and the base 301 is made of plastic material. Such arrangement enables the base 301 to be inserted and installed in the installation groove 103 , and the outer end of the base 301 is blocked by the snap-on protrusion 104 , so that the valve core assembly 3 will not fall off.

[0030] like Figure 4 and Figure 5 As shown, a first limiting platform 105 is provided on the inner wall of the first circular tube portion 102, and the first limiting platform 105 is in a circular ring shape, and the first limiting platform 105 is used to limit the pipe inserted into the first circular tube portion 102. A second limiting platform 203 is provided on the inner wall of the second connecting portion 201, and the second limiting platform 203 is used to limit the first connecting portion 101 inserted into the second connecting portion 201.

[0031] like Figure 2 , Figure 4 and Figure 5 As shown, the first connection part 101 and the first circular tube part 102 are integrally formed, the second connection part 201 and the second circular tube part 202 are integrally formed, and the first valve body 1 and the second valve body 2 are both made of plastic material. Thus, for each type of sewage check valve, only two molds need to be opened to carry out mass production of the first valve body 1 and the second valve body 2, making the production of the first valve body 1 and the second valve body 2 very convenient.

[0032] When installing the utility model, first install the valve core assembly 3 into the first connection part 101 of the first valve body 1, then apply glue to the second connection part 201 of the second valve body 2, and insert the first connection part 101 of the first valve body 1 into the second connection part 201 of the second valve body 2. Then apply glue to the first circular tube part 102 of the first valve body 1, and insert the pipe connected to the first circular tube part 102 of the first valve body 1. Finally, connect the second circular tube part 202 of the second valve body 2 with the external water pipe. The specific connection method is carried out according to the specific conditions on site, and can be adaptively selected to be connected by fusion welding, adhesive bonding, pipe clamp connection, etc.

[0033] In summary, the utility model has a simple structure, the first valve body 1, the second valve body 2 and the valve core assembly 3 are easy to assemble, and the subsequent connection with the pipeline is also installed, which simplifies the assembly and installation process and improves work efficiency.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sewage check valve, characterized in that: The invention comprises a first valve body (1) and a second valve body (2), wherein the first valve body (1) comprises a first connecting portion (101) and a first circular tube portion (102), and the second valve body (2) comprises a second connecting portion (201) and a second circular tube portion (202); the second connecting portion (201) has an insertion port adapted to the end of the first connecting portion (101), and the first connecting portion (101) is inserted into the insertion port of the second connecting portion (201); a valve core assembly (3) is detachably installed in the first valve body (1), and the valve core assembly (3) is arranged at the junction of the first connecting portion (101) and the first circular tube portion (102).

2. A sewage check valve according to claim 1, characterized in that: The inner wall of the first connecting portion (101) is provided with a mounting groove (103) and a snap-on protrusion (104); the valve core assembly (3) comprises a base (301) and a sealing baffle (302); a hinge seat is provided at one end of the base (301); the sealing baffle (302) is hingedly connected to the hinge seat; the base (301) is inserted into the mounting groove (103), and its outer end is blocked by the snap-on protrusion (104).

3. A sewage check valve according to claim 2, characterized in that: The sealing baffle (302) is a circular structure, and a circular rubber sealing structure is provided at its outer end.

4. A sewage check valve according to claim 2, characterized in that: The thickness of the installation groove (103) is greater than the thickness of two sides of the base (301), and the base (301) is made of plastic material.

5. A sewage check valve according to claim 4, characterized in that: The buckle protrusion (104) is in a conical structure with a thin outer end and a thick inner end, and the sum of the thickness of the inner end of the buckle protrusion (104) and the thickness of both sides of the base (301) is greater than the thickness of the installation groove (103).

6. A sewage check valve according to claim 1, characterized in that: A first limiting platform (105) is provided on the inner wall of the first circular tube portion (102); the first limiting platform (105) is in a circular ring shape and is used to limit the position of a pipe inserted into the first circular tube portion (102).

7. A sewage check valve according to claim 1, characterized in that: A second limiting platform (203) is provided on the inner wall of the second connecting portion (201), and the second limiting platform (203) is used to limit the first connecting portion (101) inserted into the second connecting portion (201).

8. A sewage check valve according to any one of claims 1 to 7, characterized in that: A flow direction mark or a non-return direction mark is provided on the outer wall of the first valve body (1) and / or the second valve body (2).

9. A sewage check valve according to any one of claims 1 to 7, characterized in that: The first valve body (1) and the second valve body (2) are both made of plastic material; the first connecting portion (101) and the first circular tube portion (102) are integrally formed; and the second connecting portion (201) and the second circular tube portion (202) are integrally formed.

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