High-density water pump control valve

Abstract

The utility model discloses a high-density water pump control valve, belongs to the technical field of valves, and solves the problems that even if a valve element blocks a flow channel in a valve body, liquid still bypasses the valve element, and the sealing performance of the valve element in a closed state is not suitable for scenes with high sealing performance requirements. Comprising a valve body, a valve cover fixedly connected with the valve body, a valve cylinder fixedly connected to the valve cover and a valve bonnet fixedly connected with the valve cylinder, a valve rod is arranged in the valve body and penetrates through the valve cover into the valve cylinder, the end, located in the valve cylinder, of the valve rod is fixedly connected with a piston slidably connected into the valve cylinder, and the interior of the valve cylinder is divided into an upper space and a lower space by the piston; and the upper space and the lower space are filled with water. The pressure difference is detected through the sensor, the controller operates the electromagnetic valves, valve element displacement, water flow control and water hammer prevention are achieved, reverse displacement is achieved through timing and spring release to block a flow channel, and finally sealing and leakage prevention are achieved through operation of the electromagnetic valves and the water pump.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-density water pump control valve. Background Art

[0002] The water pump control valve is an important fluid control device, which is widely used in many fields such as industry, agriculture, municipal water supply and sewage treatment. It controls the water flow by adjusting the opening of the valve to achieve precise control of the water pump. The control valve is usually composed of valve body, valve cover, valve stem, valve core, seal, spring and other components, and has the characteristics of compact structure, easy operation and good sealing performance.

[0003] The water pump control valve itself can also eliminate water hammer phenomenon when the valve core closes the flow channel in the valve body through the structure of the spring therein. However, it is precisely because of this function that the valve core will cause damage to the valve core seal after frequent opening and closing collisions. If there is no water pump to continuously supply water and pressurize, but the spring applies a resisting force, when there is a large pressure difference in the flow channel on both sides of the valve core, the liquid will still squeeze the spring to deform, and then push the valve core to flow until the pressure is balanced. Therefore, even if the valve core is blocking the flow channel in the valve body, liquid will still bypass the valve core. Its sealing performance in the closed state is not suitable for scenarios with high requirements for sealing.

[0004] Therefore, a high-density water pump control valve is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a high-density water pump control valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-density water pump control valve comprises a valve body, a valve cover fixedly connected to the valve body, a valve cylinder fixedly connected to the valve cover, and a valve cap fixedly connected to the valve cylinder, a valve stem is arranged in the valve body, the valve stem passes through the valve cover to the valve cylinder, one end of the valve stem located in the valve cylinder is fixedly connected to a piston slidably connected in the valve cylinder, the piston divides the valve cylinder into an upper space and a lower space, the upper space and the lower space are filled with water, the amount of water in the upper space and the lower space is adjustable, and the amount of water in the upper space can be pressurized.

[0008] Preferably, the lower space and the upper space are connected with a first water pipe and a second water pipe respectively, the first water pipe and the second water pipe can be opened and closed, and the first water pipe and the second water pipe are arranged to be inclined upward, and the first water pipe and the second water pipe are both connected with a water tank.

[0009] Preferably, the first water pipe and the second water pipe are connected to a first solenoid valve and a second solenoid valve respectively.

[0010] Preferably, the valve cap is connected to a connecting pipe, the connecting pipe is connected to a water pump, the connecting pipe is used to introduce an external water source, the connecting pipe is connected to a third solenoid valve, and the lowermost horizontal height position of the connecting pipe is greater than the lowermost horizontal height position of the second water pipe.

[0011] Preferably, the flow channel in the valve body includes a feed port and a discharge port, the valve body at the feed port is connected to a first detection tube, and the valve body at the discharge port is connected to a second detection tube, the first detection tube and the second detection tube are respectively connected to a first hydraulic sensor and a second hydraulic sensor, the first hydraulic sensor and the second hydraulic sensor are commonly coupled to a controller, and the controller is coupled to the first solenoid valve, the second solenoid valve, and the water pump.

[0012] Preferably, it also includes a valve core, which is fixedly connected to the lower end of the valve stem, and the valve core closes the flow channel in the valve body when it is in contact with the valve body.

[0013] Preferably, a spring is sleeved on the outer side of the valve stem, and two ends of the spring are respectively in contact with the valve cover and the valve core.

[0014] Preferably, the controller is an STM32 single chip microcomputer.

[0015] The utility model has the following beneficial effects:

[0016] The utility model detects the pressure difference through a sensor, and a controller operates several electromagnetic valves to realize valve core displacement, control water flow, and prevent water hammer. The reverse displacement is realized to block the flow channel through timing and spring release, and finally the electromagnetic valve and water pump are operated to realize sealing and prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] 1. Valve body; 101. Feed inlet; 1011. First detection tube; 1012. First hydraulic sensor; 102. Feed outlet; 1021. Second detection tube; 1022. Second hydraulic sensor; 103. Valve core; 104. Valve stem; 105. Spring; 2. Valve cover; 3. Valve cylinder; 301. Piston; 302. Guide rod; 3031. First water pipe; 3032. First solenoid valve; 3041. Second water pipe; 3042. Second solenoid valve; 4. Valve cap; 5. Connecting pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present utility model, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, 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 utility model.

[0024] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] A high-density water pump control valve, such as Figure 1 As shown, it includes a valve body 1, a valve cover 2 fixedly connected to the valve body 1, a valve cylinder 3 fixedly connected to the valve cover 2, and a valve cap 4 fixedly connected to the valve cylinder 3. A valve stem 104 and a valve core 103 are arranged in the valve body 1. The valve stem 104 passes through the valve cover 2 to the valve cylinder 3. The valve core 103 is fixedly connected to the lower end of the valve stem 104, and the flow channel in the valve body 1 is closed when the valve core 103 is in contact with the valve body 1. A spring 105 is sleeved on the outer side of the valve stem 104. The two ends of the spring 105 respectively contact the valve cover 2 and the valve core 103. One end of the valve stem 104 located in the valve cylinder 3 is fixedly connected to a piston 301 slidably connected to the valve cylinder 3. The piston 301 divides the valve cylinder 3 into an upper space and a lower space. The upper space and the lower space are filled with water. The amount of water in the upper space and the lower space is adjustable, and the amount of water in the upper space can be pressurized.

[0027] The lower space and the upper space are connected with the first water pipe 3031 and the second water pipe 3041 respectively. The first water pipe 3031 and the second water pipe 3041 can be opened and closed, and the first water pipe 3031 and the second water pipe 3041 are inclined upward. The first water pipe 3031 and the second water pipe 3041 are both connected with a water tank. The first water pipe 3031 and the second water pipe 3041 are respectively connected with the first solenoid valve 3032 and the second solenoid valve 3042.

[0028] The valve cap 4 is connected with a connecting pipe 5, and the connecting pipe 5 is connected with a water pump. The connecting pipe 5 is used to introduce an external water source. The connecting pipe 5 is connected with a third solenoid valve. The horizontal height position of the lowermost end of the connecting pipe 5 is greater than the horizontal height position of the lowermost end of the second water pipe 3041. The flow channel in the valve body 1 includes a feed port 101 and a discharge port 102. The valve body 1 located at the feed port 101 is connected with a first detection tube 1011, and the valve body 1 located at the discharge port 102 is connected with a second detection tube 1021. The first detection tube 1011 and the second detection tube 1021 are respectively connected with a first hydraulic sensor 1012 and a second hydraulic sensor 1022. The first hydraulic sensor 1012 and the second hydraulic sensor 1022 are commonly coupled with a controller. The controller is coupled with the first solenoid valve 3032, the second solenoid valve 3042, and the water pump. The controller is an STM32 single-chip microcomputer.

[0029] In the actual operation of the present invention, when the fluid directly impacts the valve core 103, in order to avoid the influence of the water hammer phenomenon, the first hydraulic sensor 1012 and the second hydraulic sensor 1022 can also detect the difference in liquid pressure in the feed port 101 and the discharge port 102. At this time, the controller controls the first solenoid valve 3032 and the second solenoid valve 3042 to open, so that when the liquid impacts the valve core 103, the valve core 103 can drive the valve stem 104 and the piston 301 to move. , and then the volume in the lower space becomes larger, and then the water is pumped back from the water storage tank, and the volume in the upper space is reduced, squeezing the water into the pumping tank, so that the valve core 103 opens the flow channel in the valve body 1, allowing the liquid to flow normally, and then when the flow rate of the liquid decreases, the first hydraulic sensor 1012 and the second hydraulic sensor 1022 also detect that the liquid pressure in the feed port 101 and the discharge port 102 changes, the controller starts the first timing, and at this time the spring 105 releases the elastic potential energy, so that The piston 301, the valve stem 104, and the valve core 103 can all be displaced in the opposite direction, so that the valve core 103 is against the inner wall of the valve body 1 to block the flow channel. In this process, the lower space is reduced and the upper space is increased. The water has a damping effect in the lower space and the upper space. After the first timing of the controller ends, the controller starts the second timing. The controller will continue to open the first solenoid valve 3032, while the second solenoid valve 3042 remains closed, and the third solenoid valve also remains open. The water pump starts The water pump 3032 starts to work, so that the external water source is pumped into the upper space, and then the water pressure in the upper space is increased. After the second timing is over, the controller controls the water pump to stop working and closes the first solenoid valve 3032, the second solenoid valve 3042, and the third solenoid valve. At this time, the piston 301 is pressed against the valve cover 2 under the action of the water pressure in the upper space, and the corresponding valve core 103 is also pressed against the inner wall of the valve body 1, thereby achieving an effective sealing effect. Even if the pressure difference between the feed port 101 and the discharge port 102 is extremely large, leakage is not likely to occur.

[0030] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-density water pump control valve, comprising a valve body (1), a valve cover (2) fixedly connected to the valve body (1), a valve cylinder (3) fixedly connected to the valve cover (2), and a valve cap (4) fixedly connected to the valve cylinder (3), characterized in that: A valve stem (104) is arranged in the valve body (1), and the valve stem (104) passes through the valve cover (2) to the valve cylinder (3). One end of the valve stem (104) located in the valve cylinder (3) is fixedly connected to a piston (301) slidably connected in the valve cylinder (3). The piston (301) divides the valve cylinder (3) into an upper space and a lower space. The upper space and the lower space are filled with water. The amount of water in the upper space and the lower space is adjustable, and the amount of water in the upper space can be pressurized.

2. A high-density water pump control valve according to claim 1, characterized in that: The lower space and the upper space are respectively connected with a first water pipe (3031) and a second water pipe (3041); the first water pipe (3031) and the second water pipe (3041) can be switched on and off, and the first water pipe (3031) and the second water pipe (3041) are arranged to be inclined upward; and the first water pipe (3031) and the second water pipe (3041) are both connected with a water storage tank.

3. A high-density water pump control valve according to claim 2, characterized in that: The first water pipe (3031) and the second water pipe (3041) are respectively connected to a first solenoid valve (3032) and a second solenoid valve (3042).

4. A high-density water pump control valve according to claim 3, characterized in that: The valve cap (4) is connected to a connecting pipe (5), the connecting pipe (5) is connected to a water pump, the connecting pipe (5) is used to introduce an external water source, the connecting pipe (5) is connected to a third solenoid valve, and the lowermost horizontal height position of the connecting pipe (5) is greater than the lowermost horizontal height position of the second water pipe (3041).

5. A high-density water pump control valve according to claim 4, characterized in that: The flow channel in the valve body (1) includes a feed port (101) and a discharge port (102); the valve body (1) located at the feed port (101) is connected to a first detection tube (1011); the valve body (1) located at the discharge port (102) is connected to a second detection tube (1021); the first detection tube (1011) and the second detection tube (1021) are respectively connected to a first hydraulic sensor (1012) and a second hydraulic sensor (1022); the first hydraulic sensor (1012) and the second hydraulic sensor (1022) are commonly coupled to a controller; the controller is coupled to a first solenoid valve (3032), a second solenoid valve (3042), and a water pump.

6. A high-density water pump control valve according to claim 1, characterized in that: It also comprises a valve core (103), wherein the valve core (103) is fixedly connected to the lower end of the valve stem (104), and when the valve core (103) is in contact with the valve body (1), the flow channel in the valve body (1) is closed.

7. A high-density water pump control valve according to claim 6, characterized in that: A spring (105) is sleeved on the outer side of the valve stem (104), and two ends of the spring (105) are in contact with the valve cover (2) and the valve core (103) respectively.

8. A high-density water pump control valve according to claim 5, characterized in that: The controller is an STM32 single chip microcomputer.

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