One-way valve

Abstract

The utility model relates to a one-way valve which comprises a valve body, a sealing face is arranged on the edge portion of the water inlet end of the valve body in a surrounding mode, two fixing pieces are arranged on one side of a valve clack, the bottoms of the two fixing pieces are coaxially connected with two connecting blocks fixed in the valve body respectively, and the centers of the tops of the two fixing pieces are jointly connected with a linkage rolling shaft in a clamping mode. The outward side of the linkage rolling shaft abuts against the push rod. A compression spring is sleeved with the push rod, the other end of the compression spring is limited to the inner side of a rotary cover, and the rotary cover is detachably installed on the outer side of the valve body. According to the one-way valve, the push rod can push the compression spring to move by setting a certain pressure value, so that the pressure capable of opening the one-way valve is set, and when the pressure is reduced, the push rod is driven by the compression spring to reset, so that the valve clack is pushed to cover again, and the effect of controlling fluid to flow unidirectionally is achieved. According to the scheme, few parts are used, the structure is simple, few parts are replaced and maintained after long-term use, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of irrigation equipment, in particular to a one-way valve. Background Art

[0002] A one-way valve is a fluid control valve that allows fluid to flow in one direction but prevents it from flowing in the opposite direction. In agricultural irrigation, one-way valves are often used to control the flow direction and flow rate of fluids. However, traditional one-way valves have complex structures and many parts, which require more effort during installation and maintenance. In addition, the large number of parts easily leads to high overall equipment costs.

[0003] For small-scale agricultural irrigation enterprises, a low-cost, easy-to-maintain and practical one-way valve is proposed under the premise of considering cost and maintenance. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] The utility model aims at the above-mentioned problems in the prior art and provides a one-way valve which can be reasonably manufactured and used in order to make up for the deficiencies of the prior art.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides such a one-way valve, including a valve body, wherein a sealing surface is arranged around the edge of the water inlet end of the valve body, and when in use, the sealing surface cooperates with a sealing ring arranged at the bottom of the rotary valve disc;

[0008] Two fixing plates are provided on one side of the valve disc, the bottoms of the two fixing plates are coaxially connected to two connecting blocks fixed inside the valve body, and a linkage roller is clamped in the center of the top of the two fixing plates, and the outward side of the linkage roller abuts against the push rod;

[0009] The push rod is horizontally clamped in the extension cavity of the valve body and can move along the extension cavity. A compression spring is sleeved inside the push rod, and the other end of the compression spring is limited to the inner side of the rotary cover. The rotary cover is detachably mounted on the outer side of the valve body.

[0010] Preferably, when the cover is closed, a receiving cavity is formed between the valve flap and the water inlet end at the bottom of the valve body, and a valve cavity is formed between the valve flap and the water outlet end at the top of the valve body.

[0011] Preferably, the extension cavity is parallel to the setting direction of the valve flap, and the bottom surface of the extension cavity is higher than the bottom surface height of the valve flap when covered, so as to effectively achieve sealing.

[0012] Preferably, a limiting strip for limiting the moving position of the push rod is provided in the extension cavity to achieve a limiting effect.

[0013] Preferably, an internal abutment block is provided inside the push rod, and the internal abutment block is sleeved and abutted against the head of the compression spring.

[0014] Preferably, an inner side of the screw cap is provided with an internal thread, and an outward side of the valve body is provided with an external thread matching the screw cap, so as to facilitate the cooperation between the valve body and the screw cap.

[0015] Preferably, when the valve flap rotates coaxially along the connecting block, the linkage roller on the valve flap pushes the push rod outward to open the water inlet wider.

[0016] (3) Beneficial effects

[0017] The utility model sets a rotating flap on one side of the valve body, and uses the flap to push the push rod outward to expand the water inlet, promote the increase of water inlet, and achieve the effect of irrigation. By setting a certain pressure value, the push rod can push the compression spring to move, thereby setting the pressure that can open the one-way valve. When the pressure decreases, the compression spring drives the push rod to reset, thereby pushing the valve flap to close again to achieve the effect of controlling the one-way flow of the fluid. This solution uses fewer parts, has a simple structure, and has fewer parts to replace and maintain after long-term use, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a front view of the utility model;

[0020] Figure 3 It is a top view of the utility model;

[0021] Figure 4 It is a bottom view of the utility model;

[0022] Figure 5 It is a cross-sectional view of the internal structure of the utility model.

[0023] The accompanying drawings are marked as follows:

[0024] 100 valve body, 101 water inlet end, 102 water outlet end, 103 valve cavity, 104 sealing surface, 105 extension cavity, 106 limit strip, 200 valve disc, 201 fixing plate, 202 linkage roller, 203 connecting block, 204 sealing ring, 300 push rod, 301 internal abutment fastener, 400 compression paralysis, 500 screw cap. DETAILED DESCRIPTION

[0025] The utility model is further described in conjunction with the accompanying drawings and embodiments.

[0026] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "top", "bottom", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] like Figure 1-5 As shown, an embodiment of the one-way valve of the utility model comprises a valve body 100, and a sealing surface 104 is arranged around the edge of the water inlet end 101 of the valve body 100. The cavity formed between the valve flap 200 and the water inlet end 101 at the bottom of the valve body 100 when the valve flap 200 is closed is referred to as an accommodating cavity, and the cavity formed between the valve flap 200 and the water outlet end 102 at the top of the valve body 100 is referred to as a valve cavity 103. When in use, the sealing ring 104 cooperates with the sealing ring 204 arranged at the bottom of the rotary valve flap 200, so that the fluid will not enter the valve cavity 103 at will after the valve flap 200 is closed.

[0028] In order to achieve effective control of the one-way opening of the fluid, two fixing plates 201 are provided on one side of the valve disc 200. It should be noted that the fixing plate 201 has a pointed portion arranged upward, and the bottoms of the two fixing plates 201 are coaxially connected to the two connecting blocks 203 fixed inside the valve body 100, respectively. A linkage roller 202 is clamped in the center of the top of the two fixing plates 201, that is, a linkage roller 20,2 is arranged at the pointed portion, and the outward side of the linkage roller 202 is against the push rod 300. When the pressure reaches a specific value, the valve disc 200 will move in a circular motion along the coaxial position of the connecting block 203, thereby causing the fixing plate 201 to rotate. After the fixing plate 201 rotates, the linkage roller 202 linked to it also rotates accordingly, and at the same time pushes the push rod 300 outward. For details, see Figure 5 ,exist Figure 5 In the middle, the valve flap 200 is pushed in the right direction to achieve fluid inflow. When the valve flap 200 rotates coaxially along the connecting block 203, the linkage roller 202 on the valve flap 200 pushes the push rod 300 outward to open the water inlet wider.

[0029] The push rod 300 is horizontally clamped in the extension cavity 105 of the valve body 100 and can move along the extension cavity 105, wherein the extension cavity 105 is parallel to the setting direction of the valve flap 200, and the bottom surface of the extension cavity 105 is higher than the bottom surface height of the valve flap 200 when covered, so as to effectively achieve the sealing effect when the valve flap 200 is covered, and the inside of the push rod 300 is sleeved with a compression spring 400, and the other end of the compression spring 400 is limited to the inside of the rotary cover 500, and the rotary cover 500 is detachably installed on the outside of the valve body 100, wherein the rotary cover 500 is mainly matched with the outside of the valve body 100 by threaded connection;

[0030] In order to achieve effective limit, see Figure 5 The extension cavity 105 is provided with a limit bar 106 for limiting the position of the push rod 300. At the same time, the push rod 300 is provided with an internal abutment block 301, and the internal abutment block 301 is sleeved and abutted against the head of the compression spring 400, so as to facilitate the limit abutment.

[0031] When the pressure value of the fluid is lower than the established pressure, the pressure of the fluid is lower than the pushing force of the compression spring on the push rod, and then the valve disc is reclosed and reset, ultimately achieving the effect of one-way fluid control. Since this solution only uses a fixed plate, a connecting plate, a linkage roller, a push rod, a compression spring, and a rotary cover to achieve the opening and closing of the valve disc, it has a simple structure and low production cost. The compression spring can be replaced by simply unscrewing the rotary cover, with fewer maintenance steps and low cost, and is suitable for promotion and use in small-scale agricultural irrigation enterprises.

[0032] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but the utility model is not limited to these embodiments. It should be pointed out that for ordinary technicians in this field. Under the premise of not departing from the purpose of the utility model, any improvement made shall fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. One-way valve, characterized in that: It comprises a valve body (100), wherein a sealing surface (104) is provided around the edge of the water inlet end (101) of the valve body (100); when in use, the sealing surface (104) cooperates with a sealing ring (204) provided at the bottom of a rotary valve flap (200); Two fixing plates (201) are provided on one side of the valve flap (200), the bottoms of the two fixing plates (201) are respectively coaxially connected to two connecting blocks (203) fixed inside the valve body (100), and a linkage roller (202) is clamped in the center of the top of the two fixing plates (201), and the outward side of the linkage roller (202) abuts against the push rod (300); The push rod (300) is horizontally clamped in the extension cavity (105) of the valve body (100) and can move along the extension cavity (105). A compression spring (400) is sleeved inside the push rod (300). The other end of the compression spring (400) is limited on the inner side of the rotary cover (500). The rotary cover (500) is detachably mounted on the outer side of the valve body (100).

2. The one-way valve according to claim 1, characterized in that: When covered, a receiving cavity is formed between the valve flap (200) and the water inlet end (101) at the bottom of the valve body (100), and a valve cavity (103) is formed between the valve flap (200) and the water outlet end (102) at the top of the valve body (100).

3. The one-way valve according to claim 1, characterized in that: The extension cavity (105) is parallel to the arrangement direction of the valve flap (200), and the bottom surface of the extension cavity (105) is higher than the bottom surface height of the valve flap (200) when the valve flap (200) is covered.

4. The one-way valve according to claim 1, characterized in that: A limiting strip (106) for limiting the moving position of the push rod (300) is provided in the extension cavity (105).

5. The one-way valve according to claim 1, characterized in that: An internal abutment block (301) is provided inside the push rod (300), and the internal abutment block (301) is sleeved and abutted against the head of the compression spring (400).

6. The one-way valve according to claim 5, characterized in that: The inner side of the rotary cover (500) is provided with an internal thread, and the outward side of the valve body (100) is provided with an external thread matching the rotary cover (500).

7. The one-way valve according to any one of claims 1 to 6, characterized in that: When the valve flap (200) rotates coaxially along the connecting block (203), the linkage roller (202) on the valve flap (200) pushes the push rod (300) outwards, thereby opening the water inlet wider.

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