Check valve convenient to install

Abstract

The check valve convenient to install comprises a valve body, the valve body is of a conical structure with a small left end and a large right end, the interior of the valve body is hollow, the right side of the valve body is provided with an opening, one side edge of the valve body is perpendicular to the right end face of the valve body, and the valve body is made of flexible materials. The valve body is a flexible plastic sleeve, and is simple in structure, low in cost and convenient to install. During use, the check valve is installed at the outlet end of a water pipe, the opening direction of the valve body is the same as the water outlet direction of the water pipe, when water flows out of the water pipe, water impacts the valve body, the valve body deforms, a notch for water to pass through is formed between the valve body and the water pipe, and when water does not flow out of the water pipe, the right end of the valve body is attached to the water pipe. When water flows back, water enters the valve body, the valve body is further tightly attached to the water pipe under the water pressure, and therefore the function of preventing the water from flowing back is achieved.

Description

Technical Field

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

[0002] A check valve is a valve used to prevent the reverse flow of fluid.

[0003] Its working principle is based on the one-way flow characteristics of the fluid. When the fluid flows in the normal flow direction, the valve disc of the check valve is pushed open to allow the fluid to pass; when the fluid tries to flow in the opposite direction, the valve disc closes under the action of fluid pressure and its own gravity to prevent the fluid from flowing back.

[0004] In the prior art, a check valve is provided at the outlet of some drainage pipes, exhaust pipes, etc. to prevent the backflow of the medium.

[0005] An existing check valve includes a valve body, in which a sealing structure that can be elastically moved is provided. The sealing structure is in a sealed state under the action of elastic force. When the fluid exerts force on the sealing structure, the elastic force can be overcome to open the sealing structure. Although this check valve has good performance, it still has the problems of complex structure, high cost and troublesome installation. Utility Model Content

[0006] In view of the problems pointed out in the background technology, the utility model provides a check valve which is easy to install, has a simple structure, low cost and is easy to install.

[0007] The technical solution of the utility model is achieved in this way:

[0008] A check valve that is easy to install includes a valve body. The valve body is a conical structure with a small left end and a large right end. The valve body is hollow inside and has an opening on the right side. One side of the valve body is perpendicular to the right end face of the valve body. The valve body is made of flexible material.

[0009] The utility model is further configured to further include a mounting tube, wherein the valve body is arranged in the mounting tube, and the outer diameter of the right end of the valve body is equal to the inner diameter of the mounting tube.

[0010] The utility model is further configured such that a connecting portion with a T-shaped cross section is provided on one side edge of the valve body, the connecting portion is arranged along the axial direction of the valve body, a connecting groove penetrating the inner and outer sides and the rear end thereof is provided on the side wall of the mounting tube, and the connecting portion is connected in the connecting groove.

[0011] The utility model is further configured that a flange is provided at the front end of the installation pipe.

[0012] The utility model is further configured that the valve body is made of rubber or silicone.

[0013] The utility model is further configured that the cross section of the valve body is a circular ring.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0015] The utility model provides a check valve that is easy to install, and its valve body is a flexible plastic sleeve, which has a simple structure, low cost, and is easy to install. When in use, the check valve is installed at the outlet end of the water pipe, and the opening direction of the valve body is the same as the water outlet direction of the water pipe. When the water pipe is outflowing, the water impacts the valve body, the valve body is deformed, and a gap for water supply to pass through is formed between the valve body and the water pipe. When the water pipe does not discharge water, the right end of the valve body maintains a state of being in contact with the water pipe. If water reflux occurs, water will enter the valve body, and the valve body will further closely fit with the water pipe under the water pressure, thereby preventing water reflux.

[0016] The valve body of the present application is firstly installed on the installation pipe, and then the installation pipe is plugged into the water pipe. Thus, the valve body is installed with the help of the installation pipe, which is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a structural schematic diagram of the valve body of the utility model installed in a water pipe.

[0019] Figure 2 This is an exploded schematic diagram of the valve body of the utility model installed in a water pipe.

[0020] Figure 3 This is an exploded sectional view of the valve body of the utility model installed in a water pipe.

[0021] Figure 4 This is a cross-sectional view of the valve body of the utility model installed in a water pipe.

[0022] Figure 5 The structure diagram of the valve body and the installation pipe of the utility model is shown in FIG. Figure 1 .

[0023] Figure 6 The structure diagram of the valve body and the installation pipe of the utility model is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0024] 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 of 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.

[0025] For reference Figure 1-6 The utility model is described as follows:

[0026] Embodiment 1: A check valve that is easy to install, comprising a valve body 1, which is installed in a water pipe 6 for use (installed at the water outlet of the water pipe 6), the valve body 1 is a tapered structure with a small left end and a large right end, the valve body 1 is hollow inside and has an opening on the right side, the left end of the valve body 1 is closed, one side of the valve body 1 is perpendicular to the right end face of the valve body 1 (this setting enables one side of the valve body 1 to fit and connect with the inside of the water pipe 6), the cross section of the valve body 1 is a circular ring, and the valve body 1 is made of rubber or silicone. The valve body 1 can be directly installed in the water pipe 6, or it can be installed in the water pipe 6 with the help of the following installation pipe 2.

[0027] It also includes a mounting tube 2, the outer diameter of which is equal to the inner diameter of the water pipe 6, the valve body 1 is arranged in the mounting tube 2, and the outer diameter of the right end of the valve body 1 is equal to the inner diameter of the mounting tube 2. A connecting portion 3 with a T-shaped cross section is provided on one side of the valve body 1, the connecting portion 3 is in a strip shape, and the connecting portion 3 is arranged along the axial direction of the valve body 1, and a connecting groove 4 is provided on the side wall of the mounting tube 2, which runs through the inner and outer sides and the rear end thereof, and the connecting portion 3 is connected to the connecting groove 4, and the valve body 1 is fixedly installed in the mounting tube 2 by means of the cooperation between the connecting portion 3 and the connecting groove 4.

[0028] The front end of the installation pipe 2 is provided with a flange 5, and the water outlet end of the water pipe 6 is also provided with a flange. The installation pipe 2 is inserted into the water pipe 6, and the flange structure of the installation pipe 2 and the water pipe 6 is fixedly connected. The installation pipe 2 is made of plastic.

[0029] When there is no water flowing out of the water pipe 6 and no water flowing back, the valve body 1 is in a natural state. At this time, the right end of the valve body 1 fits against the mounting pipe 2 to close the outlet of the water pipe 6 .

[0030] When water flows out of the water pipe 6, the water flow coming from the left side impacts the valve body 1, causing the valve body 1 to deform inwardly, and the valve body 1 and the installation pipe 2 form a port for water to pass through.

[0031] When water backflow occurs, water from the right side enters the interior of the valve body 1, and under the action of water pressure, the valve body 1 expands, so that the valve body 1 fits tightly with the installation pipe 2, thereby preventing water backflow.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A check valve that is easy to install, comprising a valve body (1), characterized in that: The valve body (1) is a conical structure with a small left end and a large right end. The valve body (1) is hollow inside and has an opening on the right side. One side of the valve body (1) is perpendicular to the right end face of the valve body (1). The valve body (1) is made of a flexible material.

2. A check valve that is easy to install according to claim 1, characterized in that: It also comprises a mounting tube (2), the valve body (1) being arranged in the mounting tube (2), and the outer diameter of the right end of the valve body (1) being equal to the inner diameter of the mounting tube (2).

3. A check valve that is easy to install according to claim 2, characterized in that: A connecting portion (3) with a T-shaped cross section is provided on one side of the valve body (1), and the connecting portion (3) is arranged along the axial direction of the valve body (1). A connecting groove (4) is provided on the side wall of the mounting tube (2) and passes through the inner and outer sides and the rear end thereof, and the connecting portion (3) is connected to the connecting groove (4).

4. A check valve that is easy to install according to claim 3, characterized in that: The front end of the installation pipe (2) is provided with a flange (5).

5. A check valve that is easy to install according to claim 1, characterized in that: The valve body (1) is made of rubber or silicone.

6. A check valve that is easy to install according to claim 1, characterized in that: The cross section of the valve body (1) is annular.

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