High-precision flow metering and control valve

Abstract

The utility model belongs to the field of liquid flow control, and particularly relates to a high-precision flow metering and control valve which comprises a valve body, a first liquid conveying pipe and a second liquid conveying pipe are fixedly communicated with the two sides of the valve body respectively, and a liquid discharging pipe used for discharging redundant liquid is communicated with the lower portion of the second liquid conveying pipe. When liquid conveying is about to be finished, the valve ball can be rotated firstly to reduce the flow of the valve body, sealing between the second liquid conveying pipe and the liquid discharging pipe is relieved when circulation of the valve body is closed, redundant liquid flows into the liquid discharging pipe, the liquid discharging port is connected with a collecting device, and the liquid discharging port is connected with the collecting device. According to the liquid flow control valve, discharged liquid can be recycled, and therefore the problem that when an existing liquid flow control valve works, due to the fact that a small period of time is needed in the closing process of the control valve, due to the fact that closing is not timely, part of redundant liquid flows out in the period of time, and resource waste is caused is solved.

Description

Technical Field

[0001] The utility model relates to the field of liquid flow control, in particular to a high-precision flow metering and control valve. Background Art

[0002] Control valves are composed of two main assemblies: valve body assembly and actuator assembly, which are divided into four series: single-seat series control valves, double-seat series control valves, sleeve series control valves and self-operated series control valves. The variations of the four types of valves can lead to many different applicable structures, each with its own special applications, characteristics, advantages and disadvantages. Although some control valves have a wider range of application conditions than other valves, control valves cannot be applied to all conditions. In order to jointly build the best solution to enhance performance and reduce costs, there are many types of control valve bodies, and the commonly used ones are straight-through single-seat, straight-through double-seat, angle, diaphragm, small flow, three-way, eccentric rotation, butterfly, sleeve, ball, etc.

[0003] When the existing liquid flow control valve is working, since the control valve needs a short period of time to close, if it is not closed in time, some excess liquid will flow out during this period, resulting in a waste of resources. Therefore, a high-precision flow metering and control valve is proposed to address the above problem. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology, when the existing liquid flow control valve is working, since the control valve needs a short period of time in the closing process, due to untimely closing, some excess liquid will flow out during this period, thereby causing a waste of resources. The utility model proposes a high-precision flow metering and control valve.

[0005] The technical solution adopted by the utility model to solve its technical problems is: the high-precision flow metering and control valve described in the utility model comprises a valve body, and a No. 1 infusion tube and a No. 2 infusion tube are fixedly connected on both sides of the valve body, and the ends of the No. 1 infusion tube and the No. 2 infusion tube away from the valve body are respectively set as a liquid inlet and a liquid outlet, a valve ball is movably installed inside the valve body, and an adjusting rod is fixedly connected to the upper surface of the valve ball, and the adjusting rod rotates and penetrates to the top of the valve body, a flow meter is installed at the liquid outlet of the No. 2 infusion tube, and a drain pipe for discharging excess liquid is connected below the No. 2 infusion tube, and a drain port is provided at the end of the drain pipe away from the No. 2 infusion tube.

[0006] Preferably, a turbine is fixedly penetrated through the portion of the upper end of the regulating rod outside the valve body, and a worm is meshed with the turbine caliper.

[0007] Preferably, a mounting box is fixedly installed on the upper surface of the valve body, the turbine and the worm are both located in the mounting box, one end of the worm is rotatably connected to a side surface inside the mounting box, and the other end of the worm rotates through a side surface outside the mounting box, and a No. 1 electric motor for driving the worm to rotate is fixedly installed at the worm on one side surface of the mounting box.

[0008] Preferably, the lower surface of the No. 2 infusion tube is fixedly connected with a lower liquid pipe, the lower liquid pipe is arranged in a rectangular shape, and the lower end of the lower liquid pipe is fixedly connected with the upper surface of the drainage tube.

[0009] Preferably, a connecting plate is rotatably installed on the surface of one end of the drain pipe away from the drain port, and a sealing plate is fixedly connected to the upper half of the surface of one side of the connecting plate. The sealing plate is arranged in an arc shape, and the outer surface of the sealing plate is slidably fitted with the inner wall of the drain pipe and is located at the connection point of the lower liquid pipe.

[0010] Preferably, a second electric motor for driving the connecting disk is fixedly mounted on the surface of one end of the liquid discharge pipe away from the liquid discharge port.

[0011] The utility model is beneficial in that:

[0012] 1. The utility model connects the liquid inlet with the liquid acquisition point and the liquid outlet with the liquid receiving point, so that the liquid is circulated and transported under the action of the No. 1 infusion tube and the No. 2 infusion tube, and the valve ball can be driven to move in the valve body to control the opening and closing of the valve body by rotating the adjusting rod. The design of the flow meter can record the flow rate of the liquid when the liquid is circulated, so as to better control the liquid flow rate. When the liquid transportation is about to end, the valve ball can be rotated to reduce the flow rate of the valve body, and the seal between the No. 2 infusion tube and the discharge tube can be released when the valve body circulation is closed, so that the excess liquid flows into the discharge tube, and the discharge port is connected to the collection device, so that the discharged liquid can be recycled, thereby solving the problem that when the existing liquid flow control valve is working, the control valve needs a short period of time during the closing process, and the untimely closing will cause some excess liquid to flow out during this period of time, thereby causing a waste of resources.

[0013] 2. The utility model works by starting No. 1 electric motor, which drives the worm to rotate when working, and the worm rotation drives the turbine to rotate under the transmission, and the turbine rotation drives the adjusting rod to rotate, thereby achieving the purpose of electrically closing and opening the valve body, and the No. 2 infusion tube is connected with the lower liquid tube through the action of the lower liquid tube, so that when the liquid stops flowing, the excess liquid will flow from the lower liquid tube to the discharge pipe, thereby achieving the purpose of cutting off and collecting the excess liquid, and by starting No. 2 electric motor, the No. 2 electric motor will drive the connecting disk to rotate, and by driving the connecting disk to rotate, the connecting disk will drive the sealing plate to slide on the inner wall of the discharge pipe, and the opening and closing of the connection with the lower liquid tube can be controlled, thereby not affecting the normal circulation of the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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 work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation box structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the liquid discharge pipe of the utility model.

[0019] In the figure: 1. valve body; 2. No. 1 infusion tube; 3. No. 2 infusion tube; 4. liquid inlet; 5. liquid outlet; 6. valve ball; 7. adjusting rod; 8. installation box; 9. turbine; 10. worm; 11. No. 1 electric motor; 12. down pipe; 13. drain pipe; 14. drain outlet; 15. sealing plate; 16. connecting plate; 17. No. 2 electric motor; 18. flow meter. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-Figure 4 As shown, a high-precision flow metering and control valve comprises a valve body 1, and two sides of the valve body 1 are respectively fixedly connected with a No. 1 infusion tube 2 and a No. 2 infusion tube 3, and the ends of the No. 1 infusion tube 2 and the No. 2 infusion tube 3 away from the valve body 1 are respectively set as a liquid inlet 4 and a liquid outlet 5, a valve ball 6 is movably installed inside the valve body 1, and an adjusting rod 7 is fixedly connected to the upper surface of the valve ball 6, and the adjusting rod 7 rotates to penetrate above the valve body 1, and a flow meter 18 is installed at the liquid outlet 5 of the No. 2 infusion tube 3, and a drain pipe 13 for discharging excess liquid is connected below the No. 2 infusion tube 3, and a drain port 14 is provided at the end of the drain pipe 13 away from the No. 2 infusion tube 3.

[0022] During operation, by connecting the liquid inlet 4 to the liquid acquisition point and the liquid outlet 5 to the liquid receiving point, the liquid can be circulated and transported under the action of the No. 1 infusion tube 2 and the No. 2 infusion tube 3, and the valve ball 6 can be driven to move in the valve body 1 to control the opening and closing of the valve body 1 by rotating the adjusting rod 7. The design of the flow meter 18 can record the flow rate of the liquid when the liquid is circulated, so as to better control the liquid flow rate. When the liquid transportation is about to end, the valve ball 6 can be rotated to reduce the flow rate of the valve body 1. When the valve body 1 is closed for circulation, the seal between the No. 2 infusion tube 3 and the discharge pipe 13 is released to make the excess liquid flow into the discharge pipe 13. The discharge port 14 is connected to the collection device, and the discharged liquid can be recycled, thereby solving the problem that when the existing liquid flow control valve is working, the control valve needs a short period of time during the closing process. Due to the untimely closing, some excess liquid will flow out during this period of time, thereby causing a waste of resources.

[0023] Furthermore, a turbine 9 is fixedly passed through the portion of the upper end of the regulating rod 7 outside the valve body 1 , and a worm 10 is caliper-engaged with the turbine 9 .

[0024] During operation, the worm 10 is driven to rotate, and the worm 10 drives the turbine 9 to rotate under the transmission. The turbine 9 drives the adjusting rod 7 to rotate when the worm 10 rotates, thereby achieving the purpose of rotating the adjusting rod 7.

[0025] Furthermore, a mounting box 8 is fixedly installed on the upper surface of the valve body 1, and the turbine 9 and the worm 10 are both located in the mounting box 8. One end of the worm 10 is rotatably connected to one side surface inside the mounting box 8, and the other end of the worm 10 rotates and penetrates to one side surface outside the mounting box 8. A No. 1 electric motor 11 for driving the worm 10 to rotate is fixedly installed at the worm 10 on one side surface of the mounting box 8.

[0026] During operation, by starting the No. 1 electric motor 11 to work, the No. 1 electric motor 11 will drive the worm 10 to rotate during operation, thereby achieving the purpose of electrically closing and opening the valve body 1.

[0027] Furthermore, a lower liquid pipe 12 is fixedly connected to the lower surface of the No. 2 infusion tube 3 . The lower liquid pipe 12 is configured in a rectangular shape, and a lower end of the lower liquid pipe 12 is fixedly connected to the upper surface of the drainage pipe 13 .

[0028] During operation, the No. 2 infusion tube 3 is connected to the lower liquid tube 12 through the action of the lower liquid tube 12, so that when the liquid stops flowing, the excess liquid will flow from the lower liquid tube 12 to the drainage tube 13, thereby achieving the purpose of intercepting and collecting the excess liquid.

[0029] Furthermore, a connecting plate 16 is rotatably installed on the surface of one end of the drain pipe 13 away from the drain port 14, and a sealing plate 15 is fixedly connected to the upper half of the surface of one side of the connecting plate 16. The sealing plate 15 is arranged in an arc shape, and the outer surface of the sealing plate 15 is slidably fitted with the inner wall of the drain pipe 13 and is located at the connection point of the lower liquid pipe 12.

[0030] During operation, by driving the connection disk 16 to rotate, the connection disk 16 will drive the sealing plate 15 to slide on the inner wall of the discharge pipe 13, and can control the opening and closing of the connection with the lower liquid pipe 12, so as not to affect the normal circulation of the liquid.

[0031] Furthermore, a second electric motor 17 for driving the connecting disk 16 is fixedly mounted on the surface of one end of the liquid discharge pipe 13 away from the liquid discharge port 14 .

[0032] During operation, by starting the No. 2 electric motor 17, the No. 2 electric motor 17 will drive the connecting disk 16 to rotate, thereby achieving the purpose of electric control.

[0033] Working principle: By starting the No. 1 electric motor 11, the No. 1 electric motor 11 will drive the worm 10 to rotate when working, and the worm 10 will drive the turbine 9 to rotate under the transmission when rotating, and the turbine 9 will drive the adjusting rod 7 to rotate when rotating, thereby achieving the purpose of electrically closing and opening the valve body 1, and the No. 2 infusion tube 3 is connected with the lower liquid tube 12 through the action of the lower liquid tube 12, so that when the liquid stops circulating, the excess liquid will flow from the lower liquid tube 12 to the discharge pipe 13, thereby achieving the purpose of cutting off and collecting the excess liquid, and by starting the No. 2 electric motor 17 to work, the No. 2 electric motor 17 will drive the connecting disk 16 to rotate, and by driving the connecting disk 16 to rotate, the connecting disk 16 will drive the sealing plate 15 to slide on the inner wall of the discharge pipe 13, and the opening and closing of the connection with the lower liquid tube 12 can be controlled, so as not to affect the normal circulation of the liquid.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A high-precision flow metering and control valve, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to a No. 1 infusion tube (2) and a No. 2 infusion tube (3) on both sides, and the ends of the No. 1 infusion tube (2) and the No. 2 infusion tube (3) away from the valve body (1) are respectively provided with a liquid inlet (4) and a liquid outlet (5). A valve ball (6) is movably installed inside the valve body (1), and an adjusting rod (7) is fixedly connected to the upper surface of the valve ball (6). The adjusting rod (7) rotates and penetrates the upper part of the valve body (1). A flow meter (18) is installed at the liquid outlet (5) of the No. 2 infusion tube (3). A drainage tube (13) for discharging excess liquid is connected below the No. 2 infusion tube (3), and a drainage tube (13) is provided at one end of the drainage tube (13) away from the No. 2 infusion tube (3) with a drainage outlet (14).

2. The high-precision flow metering and control valve according to claim 1, characterized in that: A turbine (9) is fixedly penetrated through the portion of the upper end of the regulating rod (7) located outside the valve body (1), and a worm (10) is meshed with the caliper of the turbine (9).

3. The high-precision flow metering and control valve according to claim 2, characterized in that: A mounting box (8) is fixedly mounted on the upper surface of the valve body (1); the turbine (9) and the worm (10) are both located inside the mounting box (8); one end of the worm (10) is rotatably connected to a side surface inside the mounting box (8); the other end of the worm (10) is rotatably connected to a side surface outside the mounting box (8); and a No. 1 electric motor (11) for driving the worm (10) to rotate is fixedly mounted on one side surface of the mounting box (8) at the worm (10).

4. The high-precision flow metering and control valve according to claim 1, characterized in that: The lower surface of the No. 2 infusion tube (3) is fixedly connected to a lower liquid tube (12), the lower liquid tube (12) is arranged in a rectangular shape, and the lower end of the lower liquid tube (12) is fixedly connected to the upper surface of the drainage tube (13).

5. The high-precision flow metering and control valve according to claim 1, characterized in that: A connection plate (16) is rotatably mounted on the surface of one end of the drain pipe (13) away from the drain port (14); a sealing plate (15) is fixedly connected to the upper half of one side surface of the connection plate (16); the sealing plate (15) is arranged in an arc shape; the outer surface of the sealing plate (15) is slidably fitted with the inner wall of the drain pipe (13) and is located at the connection point with the lower liquid pipe (12).

6. The high-precision flow metering and control valve according to claim 1, characterized in that: A No. 2 electric motor (17) for driving the connecting disk (16) is fixedly mounted on the surface of one end of the liquid discharge pipe (13) away from the liquid discharge port (14).

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