Check valve easy to install

Abstract

The utility model discloses a check valve easy to install. The check valve comprises a check valve body used for installation, an installation cover fixedly installed at the upper end of the check valve body and a fixed connecting block fixed to the left side of the inner wall of the check valve body. The valve further comprises a connecting rod, the upper end of the connecting rod is fixedly connected with the middle of the fixed connecting block, a fixed block is installed at the lower end of the connecting rod, a valve clack is fixed to the left side of the fixed block, and a first sealing ring is arranged at the outer end of the left side of the valve clack. And the water inlets are formed in the left side and the right side of the check valve body, first clamping blocks are fixed to the left side and the right side of each water inlet, clamping grooves are formed in the outer ends of the first clamping blocks, second clamping blocks are arranged in the clamping grooves, and first springs are installed on the outer sides of the second clamping blocks. According to the check valve easy to install, the phenomenon of water leakage caused by medium backflow can be conveniently prevented, the check valve and a pipeline can be rapidly installed conveniently, and the check valve and the pipeline can be rapidly installed conveniently.

Description

Technical Field

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

[0002] A check valve is a valve that automatically opens and closes the valve disc depending on the flow of the medium itself to prevent the medium from flowing back. However, existing check valves are prone to loosening during installation, causing water leakage when passing through the check valve. Therefore, a check valve that is easy to install and has a sealing structure is designed.

[0003] Announcement No. CN 208311565 U provides an easy-to-install check valve, aiming to provide a check valve that is easy to install, has good sealing effect and is highly practical. The key points of its technical solution are that a mounting mechanism is provided in the valve body, the mounting mechanism includes two limit blocks arranged on the inner wall of the valve body and a limit rod connected to the check plate, a limit groove is formed between each limit block and the inner wall of the valve body, and one end of the limit rod is placed in a limit groove, and the other end of the limit rod is placed in another limit groove, the spacing between the limit block and the valve cover is less than the height of the limit rod, the check plate includes a main body, a rubber body detachably connected to the main body, and a sealing retaining ring arranged on the rubber body, a limit retaining ring is provided on the inner wall of the water inlet end of the valve body, and the outer diameter of the sealing retaining ring is matched with the inner diameter of the limit retaining ring. The utility model is applicable to the field of valve technology.

[0004] The above-mentioned prior art solutions have the following defects: it is not convenient to prevent the medium from flowing back and causing water leakage, and it is not convenient to quickly install the check valve and the pipeline. Therefore, the utility model provides an easy-to-install check valve to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide an easy-to-install check valve to solve the problems raised in the above background technology that it is not convenient to prevent the backflow of the medium and leakage, it is not convenient to quickly install the check valve and the pipeline.

[0006] To achieve the above object, the utility model provides the following technical solution: an easy-to-install check valve, comprising: a check valve body for installation, a mounting cover fixedly mounted on the upper end of the check valve body, and a fixed connection block fixed on the left side of the inner wall of the check valve body;

[0007] It also includes: a connecting rod, the upper end of which is fixedly connected to the middle part of the fixed connecting block, and the lower end of the connecting rod is equipped with a fixed block, a valve flap is fixed on the left side of the fixed block, and a first sealing ring is arranged on the left outer end of the valve flap;

[0008] A water inlet is arranged on the left and right sides of the check valve body, a first clamping block is fixed on the left and right sides of the water inlet, a clamping groove is arranged at the outer end of the first clamping block, a second clamping block is arranged inside the clamping groove, a first spring is installed on the outer side of the second clamping block, a nut is installed on the left side of the first clamping block, a pipe is installed on the left side of the water inlet, and a second sealing ring is arranged inside the pipe.

[0009] Preferably, the upper end of the check valve body is connected to the mounting cover in a snap-fit ​​manner, and bolts are installed on the left and right sides of the mounting cover.

[0010] Preferably, the front and rear ends of the connecting rod are connected with torsion springs, and the connecting rod forms a rotating structure in the middle of the fixed connecting block.

[0011] Preferably, the outer end of the first sealing ring is arranged in a fit state with the inside of the water inlet, and the first sealing ring is arranged at equal intervals on the left side of the valve disc.

[0012] Preferably, the interior of the card slot is connected to the second card block in a card-engaging manner, and the cross-section of the card slot is arranged in an arc shape.

[0013] Preferably, the second clamping block forms a sliding structure inside the pipeline, and the second clamping block and the first spring are symmetrically arranged about the center line of the pipeline.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the easy-to-install check valve is convenient for preventing the medium from flowing back and causing water leakage, and is convenient for quickly installing the check valve and the pipeline;

[0015] 1. A connecting rod, a torsion spring and a valve disc are provided. When water flows into the check valve through the water inlet on the left side of the check valve body, the impact force of the water flow pushes the valve disc out from the inside of the water inlet to the right, and the valve disc drives the connecting rod to flip upward through the fixed block, so that the water flow can flow inside the check valve body. When the water flow stops, the torsion spring drives the valve disc to return to its original position through the connecting rod, and the first sealing ring fits with the inner wall of the water inlet, which can prevent the water flow from being circuitous, and prevent the medium from flowing back and leaking;

[0016] 2. A first clamping block, a clamping slot and a second clamping block are provided. When the pipeline is installed on the left side of the water inlet, the first clamping block is inserted into the hole slot of the pipeline, and the second clamping block is engaged in the clamping slot at the outer end of the first clamping block, thereby stabilizing the connection between the check valve body and the pipeline. In order to strengthen the installation position of the pipeline, a nut is installed on the left side of the first clamping block, which is convenient for quick installation of the check valve and the pipeline;

[0017] 3. A water inlet, a pipe and a second sealing ring are provided. The inside of the pipe is connected to the left side of the water inlet by snapping. The position of the check valve body and the pipe is fixed by the snapping structure. After installation, the second sealing ring inside the pipe is connected to the outer end of the water inlet in a fitting state, so as to avoid water leakage between the pipe and the check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0020] Figure 3 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 4 It is a schematic diagram of the connection structure of the connecting rod and the torsion spring of the utility model.

[0022] In the figure: 1. check valve body; 2. mounting cover; 3. bolt; 4. fixed connection block; 5. connecting rod; 6. torsion spring; 7. fixed block; 8. valve disc; 9. first sealing ring; 10. water inlet; 11. first clamping block; 12. clamping groove; 13. second clamping block; 14. first spring; 15. nut; 16. pipe; 17. second sealing ring. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-4 The utility model provides a technical solution: a check valve that is easy to install, including a check valve body 1, a mounting cover 2, a bolt 3, a fixed connection block 4, a connecting rod 5, a torsion spring 6, a fixed block 7, a valve disc 8, a first sealing ring 9, a water inlet 10, a first clamping block 11, a clamping groove 12, a second clamping block 13, a first spring 14, a nut 15, a pipe 16 and a second sealing ring 17.

[0025] The upper end of the connecting rod 5 is fixedly connected to the middle part of the fixed connecting block 4, and the lower end of the connecting rod 5 is installed with a fixed block 7, a valve flap 8 is fixed to the left side of the fixed block 7, and a first sealing ring 9 is provided at the left outer end of the valve flap 8;

[0026] The water inlet 10 is arranged on the left and right sides of the check valve body 1, and the first clamping block 11 is fixed on the left and right sides of the water inlet 10, and the outer end of the first clamping block 11 is provided with a clamping groove 12, the interior of the clamping groove 12 is provided with a second clamping block 13, and the outer side of the second clamping block 13 is installed with a first spring 14, a nut 15 is installed on the left side of the first clamping block 11, a pipe 16 is installed on the left side of the water inlet 10, and the interior of the pipe 16 is provided with a second sealing ring 17.

[0027] like Figure 1 As shown, the upper end of the check valve body 1 is connected to the mounting cover 2 in a snap-fit ​​manner, and bolts 3 are installed on the left and right sides of the mounting cover 2.

[0028] like Figure 1 and Figure 4 As shown, the front and rear ends of the connecting rod 5 are connected with torsion springs 6 , and the connecting rod 5 forms a rotating structure in the middle of the fixed connecting block 4 .

[0029] like Figure 1 The outer end of the first sealing ring 9 is arranged in a fitted state with the inside of the water inlet 10 , and the first sealing ring 9 is arranged at equal intervals on the left side of the valve flap 8 .

[0030] like Figure 3 As shown, the interior of the slot 12 is connected to the second block 13 by a snap-fitting manner, and the cross-section of the slot 12 is arranged in an arc-shaped state. The second block 13 forms a sliding structure inside the pipe 16, and the second block 13 and the first spring 14 are arranged symmetrically about the center line of the pipe 16, so as to facilitate the quick installation of the check valve.

[0031] Working Principle: When using this easy-to-install check valve, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, firstly, pipes 16 are installed at both ends of the left and right ends of the check valve body 1, and the inside of the pipe 16 is connected to the water inlet 10 by snapping, and the second sealing ring 17 inside the pipe 16 fits with the water inlet 10, so as to ensure that there will be no leakage when water flows through, and the first clamping block 11 is inserted into the hole groove at the right outer end of the pipe 16, when the first clamping block 11 enters the inside of the hole groove, the second clamping block 13 is snapped into the inside of the clamping groove 12 by the rebound of the first spring 14, and then the nut 15 is installed on the left side of the first clamping block 11 to reinforce the pipe 16 and the check valve body. The check valve body 1 is stably connected. After the check valve body 1 is installed, when water flows into the inside of the check valve body 1 through the pipe 16, the valve flap 8 is driven to disengage from the internal groove of the water inlet 10 by the impact of the water flow, and the valve flap 8 drives the connecting rod 5 to flip upward through the fixed block 7, so that the water flows out of the check valve body 1. When the water flow is stopped, the connecting rod 5 is driven to flip downward by the rebound of the torsion spring 6, and the connecting rod 5 drives the valve flap 8 to engage inside the water inlet 10 to avoid backflow of water. This is the use method of the easy-to-install check valve.

[0032] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An easy-to-install check valve, comprising: A check valve body (1) for installation, a mounting cover (2) fixedly mounted on the upper end of the check valve body (1), and a fixed connection block (4) fixed on the left side of the inner wall of the check valve body (1); It is characterized by further comprising: A connecting rod (5), the upper end of the connecting rod (5) being fixedly connected to the middle of the fixed connecting block (4), and the lower end of the connecting rod (5) being mounted with a fixed block (7), a valve flap (8) being fixed on the left side of the fixed block (7), and a first sealing ring (9) being arranged on the left outer end of the valve flap (8); A water inlet (10) is arranged on the left and right sides of the check valve body (1), a first clamping block (11) is fixed on the left and right sides of the water inlet (10), a clamping groove (12) is arranged at the outer end of the first clamping block (11), a second clamping block (13) is arranged inside the clamping groove (12), and a first spring (14) is installed on the outer side of the second clamping block (13), a nut (15) is installed on the left side of the first clamping block (11), a pipe (16) is installed on the left side of the water inlet (10), and a second sealing ring (17) is arranged inside the pipe (16).

2. An easily installed check valve according to claim 1, characterized in that: The upper end of the check valve body (1) is connected to the mounting cover (2) in a snap-fit ​​manner, and bolts (3) are installed on the left and right sides of the mounting cover (2).

3. An easily installed check valve according to claim 1, characterized in that: The front and rear ends of the connecting rod (5) are connected to torsion springs (6), and the connecting rod (5) forms a rotating structure in the middle of the fixed connecting block (4).

4. An easily installed check valve according to claim 1, characterized in that: The outer end of the first sealing ring (9) is arranged in a fitted state with the inside of the water inlet (10), and the first sealing ring (9) is arranged at equal intervals on the left side of the valve flap (8).

5. The easy-to-install check valve according to claim 1, characterized in that: The interior of the card slot (12) is connected to the second card block (13) in a card-engaging manner, and the cross section of the card slot (12) is arranged in an arc shape.

6. The easy-to-install check valve according to claim 1, characterized in that: The second clamping block (13) forms a sliding structure inside the pipe (16), and the second clamping block (13) and the first spring (14) are symmetrically arranged about the center line of the pipe (16).

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