Flow-controllable check valve

Abstract

The utility model discloses a flow-controllable check valve which is characterized by further comprising an adjusting mechanism connected with one end of a water outlet pipe or a water inlet pipe and used for controlling water outlet flow or water inlet flow. By rotating the adjusting knob, the adjusting knob drives the adjusting screw rod to move up and down, when the adjusting screw rod is upward, the amount of water flowing out of the water outlet pipe is increased, and when the adjusting screw rod is downward, the amount of water flowing out of the water outlet pipe is decreased, and the water flow is smaller when the adjusting screw rod is downward until water discharging is stopped. The water outlet amount of the check valve body can be controlled, the throttling valve is additionally arranged on an original check valve which originally needs to be used in cooperation with two valve bodies, the flow direction of water flow can be controlled, the water outlet flow can be controlled, the cost is saved, meanwhile, the structure is simplified, and installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a check valve with controllable flow rate. Background Technology

[0002] Beverage shops have strict requirements regarding the impurity content of the water used for cleaning utensils. However, tap water contains a lot of impurities and needs to be mixed with purified water in a certain ratio before cleaning. Since the flow rate of each tap is inconsistent, it's impossible to use a water purifier with a fixed flow rate for mixing. When the tap water flow rate is high, the cleaning water contains more impurities; when the tap water flow rate is low, the proportion of purified water is high, resulting in waste of purified water. Existing water purifiers use check valves that only control the direction of water flow. For example, patent number CN201621028923.9, patent name: U-shaped check valve, describes a technical solution where water enters the valve core through the inlet pipe, the valve core controls the flow direction, and then the water flows out through the outlet pipe. The flow rate at the outlet cannot be adjusted. If the flow rate needs to be adjusted, a throttling valve needs to be connected after the outlet pipe, increasing costs and installation steps. The complex piping also increases future maintenance costs. Therefore, a flow-controllable check valve is proposed. Utility Model Content

[0003] The main purpose of this utility model is to provide a solution that can effectively address the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a flow-controllable check valve includes a check valve body, an inlet pipe disposed on the check valve body, an outlet pipe disposed on the check valve body and communicating with the inlet pipe, and a valve core assembly disposed between the inlet pipe and the outlet pipe for controlling the direction of water flow. The feature is that it further includes an adjustment mechanism connected to one end of the outlet pipe or the inlet pipe for controlling the flow rate of the outlet or inlet water. The adjustment mechanism includes an adjustment knob disposed on the outlet pipe or the inlet pipe, an adjustment screw connected to the adjustment knob and threaded at one end, a sealing plug disposed at one end of the outlet pipe or the inlet pipe and threadedly connected to the adjustment screw, and a locking nut for locking the adjustment knob.

[0005] Preferably, the bottom of the adjusting screw has a tapered structure.

[0006] Preferably, the adjusting screw is provided with a first protruding ring and a second protruding ring.

[0007] Preferably, the adjustment mechanism further includes a conical sealing ring adapted to the conical structure at the bottom of the adjustment screw and an O-ring seal disposed between the first convex ring and the second convex ring.

[0008] Preferably, the valve core assembly includes a valve core, a valve core support connected to the valve core, a valve core base connected to the valve core support, and a spring installed between the valve core and the valve core support to facilitate valve core reset.

[0009] Preferably, the valve core assembly is connected to a bracket, and the bracket is connected to a plug.

[0010] Preferably, the valve core assembly, plug, inlet pipe and outlet pipe are each provided with a number of O-rings.

[0011] Preferably, the check valve body has fixing plates on both sides, and the fixing plates have mounting holes.

[0012] This utility model has the following beneficial effects: By rotating the adjustment knob, the adjustment knob drives the adjustment screw to move up and down. When the adjustment screw moves upward, the water flow from the outlet pipe increases, and when the adjustment screw moves downward, the water flow from the outlet pipe decreases. The water flow decreases as the adjustment screw moves downward until the water flow stops. Through the setting of the adjustment mechanism, the water flow of the check valve body can be controlled. This allows the original requirement of two valve bodies to be used in conjunction with each other. By adding a throttle valve to the original check valve, both the direction of water flow and the flow rate of water can be controlled, saving costs while simplifying the structure and making installation convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is an exploded view of this utility model;

[0015] Figure 3 This is a cross-sectional view of the present invention.

[0016] Legend: 1. Check valve body; 2. Outlet pipe; 3. Inlet pipe; 4. Valve core assembly; 41. Valve core bracket; 42. Valve core base; 43. Valve core; 44. Spring; 5. Adjusting mechanism; 51. Adjusting knob; 52. Adjusting screw; 521. Convex ring one; 522. Convex ring two; 53. Sealing plug; 54. Locking nut; 55. Conical sealing ring; 56. O-ring; 6. Bracket; 7. Plug; 8. Fixing plate; 81. Mounting hole. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figure 1-3As shown, a flow-controllable check valve includes a check valve body 1, an inlet pipe 3 disposed on the check valve body 1, an outlet pipe 2 disposed on the check valve body 1 and communicating with the inlet pipe 3, and a valve core assembly 4 disposed between the inlet pipe 3 and the outlet pipe 2 for controlling the direction of water flow. The valve is characterized by further including an adjustment mechanism 5 connected to one end of the outlet pipe 2 or the inlet pipe 3 for controlling the flow rate of the water being discharged or discharged. The adjustment mechanism 5 includes an adjustment knob 51 disposed on the outlet pipe 2 or the inlet pipe 3, an adjustment screw 52 connected to the adjustment knob 51 and threaded at one end, and a threaded connection between one end of the outlet pipe 2 or the inlet pipe 3 and the adjustment screw 52. The system includes a plug 53 and a locking nut 54 for locking the adjusting knob 51. By rotating the adjusting knob 51, the adjusting screw 52 moves up and down. When the adjusting screw 52 moves upward, the water flow from the outlet pipe 2 increases, and when the adjusting screw 52 moves downward, the water flow from the outlet pipe 2 decreases. The water flow decreases as the adjusting screw 52 moves downward until the water stops flowing. By adjusting the mechanism 5, the water flow of the check valve body 1 can be controlled. This allows the system to control both the direction of water flow and the flow rate of the outlet water by adding a throttle valve to the original check valve, which originally required two valve bodies. This saves costs, simplifies the structure, and makes installation convenient.

[0019] In one embodiment, the bottom of the adjusting screw 52 is a conical structure, and a matching conical sealing ring 55 is provided on the conical structure. The adjusting screw 52 is provided with a first convex ring 521 and a second convex ring 522, and an O-ring sealing ring 56 is provided between them. The multiple seals increase the sealing performance of the adjusting mechanism 5.

[0020] In one embodiment, the valve core assembly 4 includes a valve core 43, a valve core support 41 connected to the valve core 43, a valve core base 42 connected to the valve core support 41, and a spring 44 installed between the valve core 43 and the valve core support 41 to facilitate the reset of the valve core 43; one end of the valve core assembly 4 is connected to a bracket 6, and the bracket 6 is connected to a plug 7; the valve core support 41 is provided with a through hole or flow channel to facilitate water flow towards the outlet pipe 2; when water enters, by squeezing the valve core 43, the valve core 43 squeezes the spring 44 to move towards the valve core support 41, thereby opening the valve core 43, allowing water to enter from both sides of the valve core 43, and flow towards the outlet pipe 2 through the through hole or flow channel on the valve core support 41.

[0021] In one embodiment, the valve core assembly 4, the plug 7, the inlet pipe 3, and the outlet pipe 2 are each provided with a number of O-rings 56 to increase the sealing performance of the connection.

[0022] In one embodiment, the check valve body 1 is provided with fixing plates 8 on both sides, and the fixing plates 8 are provided with mounting holes 81; the bolts pass through the mounting holes 81 on the fixing plates 8 to install the check valve body 1 on the water purifier.

[0023] When this utility model is in use, when the adjusting mechanism 5 is set at one end of the outlet pipe 2, water enters from the inlet pipe 3, passes through the bracket 6 and pushes the valve core 43. The valve core 43 squeezes the spring 44 and moves towards the valve core bracket 41, thereby opening the valve core 43. Water enters from both sides of the valve core 43, flows through the through hole or flow channel on the valve core bracket 41 towards the outlet pipe 2, and then by rotating the adjusting knob 51 on the adjusting mechanism 5, the adjusting screw 52 is driven to move up or down. When the adjusting screw 52 moves up, the gap between the tapered structure at the bottom of the adjusting screw 52 and the channel between the adjusting screw valve core and the inner wall of the outlet pipe 2 becomes larger, thereby increasing the amount of water flowing out of the outlet pipe 2. Conversely, when the adjusting screw 52 moves down, the amount of water flowing out of the outlet pipe 2 becomes smaller. When the tapered sealing ring 55 on the adjusting screw 52 is tightly connected to the inner wall of the outlet pipe 2, the outlet pipe 2 stops discharging water.

[0024] When the regulating mechanism 5 is set at one end of the inlet pipe 3, water enters from the inlet pipe 3. Then, by rotating the regulating knob 51 on the regulating mechanism 5, the regulating screw 52 is moved up or down. When the regulating screw 52 moves up, the gap between the conical structure at the bottom of the regulating screw 52 and the channel on the inner wall of the inlet pipe 3 becomes larger, and the amount of water entering from the inlet pipe 3 increases. The water entering the inlet pipe 3 pushes the valve core 43, and the valve core 43 squeezes the spring 44 and pushes it towards the valve core support 41. The water enters from both sides of the valve core 43 and flows towards the outlet pipe 2 through the through hole or flow channel on the valve core support 41. Conversely, when the regulating screw 52 moves down, the amount of water entering from the inlet pipe 3 decreases. When the conical sealing ring 55 on the regulating screw 52 is tightly connected to the inner wall of the inlet pipe 3, the inlet pipe 3 stops receiving water.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flow-controllable check valve, comprising a check valve body (1), an inlet pipe (3) disposed on the check valve body (1), an outlet pipe (2) disposed on the check valve body (1) and communicating with the inlet pipe (3), and a valve core assembly (4) disposed between the inlet pipe (3) and the outlet pipe (2) for controlling the direction of water flow, characterized in that: It also includes an adjustment mechanism (5) connected to one end of the outlet pipe (2) or the inlet pipe (3) for controlling the flow rate of water outlet or inlet; the adjustment mechanism (5) includes an adjustment knob (51) set on the outlet pipe (2) or the inlet pipe (3), an adjustment screw (52) connected to the adjustment knob (51) and threaded at one end, a sealing plug (53) set at one end of the outlet pipe (2) or the inlet pipe (3) and threadedly connected to the adjustment screw (52), and a locking nut (54) for locking the adjustment knob (51).

2. The flow-controllable check valve according to claim 1, characterized in that: The bottom of the adjusting screw (52) is tapered.

3. The flow-controllable check valve according to claim 2, characterized in that: The adjusting screw (52) is provided with a first protruding ring (521) and a second protruding ring (522).

4. The flow-controllable check valve according to claim 1, characterized in that: The adjustment mechanism (5) further includes a conical sealing ring (55) adapted to the conical structure at the bottom of the adjustment screw (52) and an O-ring (56) disposed between the first convex ring (521) and the second convex ring (522).

5. A flow-controllable check valve according to claim 1, characterized in that: The valve core assembly (4) includes a valve core (43), a valve core support (41) connected to the valve core (43), a valve core base (42) connected to the valve core support (41), and a spring (44) installed between the valve core (43) and the valve core support (41) to facilitate the reset of the valve core (43).

6. A flow-controllable check valve according to claim 5, characterized in that: The valve core assembly (4) is connected to a bracket (6) at one end, and the bracket (6) is connected to a plug (7).

7. A flow-controllable check valve according to claim 6, characterized in that: The valve core assembly (4), plug (7), inlet pipe (3) and outlet pipe (2) are each provided with several O-rings (56).

8. A flow-controllable check valve according to claim 1, characterized in that: The check valve body (1) is provided with fixing plates (8) on both sides, and the fixing plates (8) are provided with mounting holes (81).

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