Liquid pesticide metering device

Abstract

The utility model discloses a liquid pesticide metering device which comprises a filling opening, a first electric valve, a flow monitor and a turbine assembly, and the first electric valve is arranged on the inner side of the lower end of the filling opening. After filling is completed, a controller is started to control a first electric valve and a second electric valve to be closed, meanwhile, an electric telescopic rod is started to drive an elastic telescopic pipe to move, the elastic telescopic pipe is changed into an S shape, the circulation path of pesticide in the elastic telescopic pipe is prolonged, the circulation speed of the pesticide is reduced, and the tail end of the elastic telescopic pipe is located at the upper end of a pesticide outlet pipe; pesticide flows into and out of a pesticide pipe, a hydraulic air cylinder is started to drive a piston to move downwards to quickly adsorb the pesticide, so that the influence of the pesticide flowing into the upper end of a first electric valve on next filling detection of the flow monitor is reduced, and large errors of metering of next filling detection of the flow monitor are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid metering devices, in particular to a liquid pesticide metering device. Background Art

[0002] Liquid metering devices are equipment used to measure and control liquid flow. They are widely used in chemical, water treatment, food and other industries. The principle is to determine the flow rate by measuring the pressure, speed or volume of the liquid flowing through the device. In the production process of pesticides, metering devices are needed to control the filling capacity of pesticides so that the filling capacity of each bottle of pesticides is the same. The working principle of the turbine flowmeter is that within a certain flow range, the speed of the turbine is proportional to the flow rate of the fluid. The fluid flow drives the turbine to rotate. The speed of the turbine is converted into electrical pulses, and the data is displayed by a secondary table to reflect the flow rate of the fluid. Then the fluid flow is expressed by the conversion instrument, thereby controlling the liquid capacity.

[0003] When the pesticide is quantitatively filled, a metering device is installed at the filling port to detect the volume of the pesticide flowing out, and then the valve is closed in time through the controller to complete the filling. However, after the filling is completed, some pesticides will be retained in the metering device, resulting in the next filling. The retained pesticide will flow into the filling bottle as the valve opens, resulting in a large deviation in the metering of the metering device. Therefore, in response to the above problems, we have proposed a liquid pesticide metering device. Utility Model Content

[0004] The utility model aims to provide a liquid pesticide metering device to solve the problem that after filling, part of the pesticide will be retained in the metering device, resulting in the intercepted pesticide flowing into the filling bottle as the valve opens during the next filling, causing a large deviation in the metering of the metering device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A liquid pesticide metering device comprises a filling port, a first electric valve, a flow monitor and a turbine assembly, wherein the first electric valve is arranged on the inner side of the lower end of the filling port, the right end of the filling port is fixedly connected with the flow monitor, the filling port is provided with a turbine assembly inside, the right end of the flow monitor is fixedly connected with a conversion meter, the right end of the filling port is fixedly connected with a controller, the upper end of the filling port is fixedly connected with a box body, the inner walls of the left and right ends of the box body are fixedly connected with electric telescopic rods, one end of the electric telescopic rod is fixedly connected with an elastic telescopic tube, the upper end of the box body is fixedly connected with a connecting pipe, a second electric valve is arranged inside the connecting pipe, the left end of the filling port is fixedly connected with a connecting block, the left end of the connecting block is fixedly connected with a hose, the upper end of the hose is fixedly connected with a sleeve, the sleeve is fixedly connected with a hydraulic cylinder inside, the upper end of the hydraulic cylinder is fixedly connected with a piston, the inner side of the upper end of the sleeve is fixedly connected with a sealing ring, and the inner side of the lower end of the box body is fixedly connected with a medicine outlet pipe.

[0007] Preferably, the flow monitor, turbine assembly and conversion instrument are electrically connected, the controller is located at the lower end of the flow monitor, and the interior of the box is hollow.

[0008] Preferably, the number of the electric telescopic rods is two, the outer side of the upper end of the elastic telescopic tube is fixedly connected to a box body, and the elastic telescopic tube is located inside the box body.

[0009] Preferably, the connecting block is located at the lower end of the box body, the interior of the sleeve is hollow, and the piston is located inside the sleeve.

[0010] Preferably, the outer side of the piston fits with the inner wall of the sleeve, the outer shape of the sealing ring is annular, and the inner side of the sealing ring fits tightly with the outer side of the lower end of the medicine outlet tube.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, an electric telescopic rod, an elastic telescopic tube, a hydraulic cylinder and a piston are arranged. When filling is completed, the controller is started to control the first electric valve and the second electric valve to be closed, and the electric telescopic rod is started at the same time to drive the elastic telescopic tube to move, so that the elastic telescopic tube becomes an "S" shape, thereby extending the flow route of the pesticide in the elastic telescopic tube, reducing the flow speed of the pesticide, so that the end of the elastic telescopic tube is located at the upper end of the medicine outlet pipe, and the pesticide flows into the medicine outlet pipe. The hydraulic cylinder is started, and the hydraulic cylinder drives the piston to move downward to quickly adsorb the intercepted pesticide, thereby reducing the intercepted pesticide flowing into the upper end of the first electric valve. The impact on the next filling detection of the flow monitor is reduced, and the large measurement error of the next filling detection of the flow monitor is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at point A.

[0015] In the figure: 1. filling port; 2. first electric valve; 3. flow monitor; 4. turbine assembly; 5. conversion meter; 6. controller; 7. box; 8. electric telescopic rod; 9. elastic telescopic tube; 10. connecting tube; 11. second electric valve; 12. connecting block; 13. hose; 14. sleeve; 15. hydraulic cylinder; 16. piston; 17. sealing ring; 18. medicine outlet pipe. DETAILED DESCRIPTION

[0016] 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.

[0017] See also Figure 1-2 , the utility model provides a technical solution:

[0018] A liquid pesticide metering device comprises a filling port 1, a first electric valve 2, a flow monitor 3 and a turbine assembly 4. The first electric valve 2 is arranged on the inner side of the lower end of the filling port 1, the flow monitor 3 is fixedly connected to the right end of the filling port 1, the turbine assembly 4 is arranged inside the filling port 1, the right end of the flow monitor 3 is fixedly connected to a conversion meter 5, the right end of the filling port 1 is fixedly connected to a controller 6, the upper end of the filling port 1 is fixedly connected to a box 7, the inner walls of the left and right ends of the box 7 are fixedly connected to electric telescopic rods 8, one end of the electric telescopic rod 8 is fixedly connected to the inner wall of the left and right ends of the box 7, and the electric telescopic rod 8 is fixedly connected to the inner wall of the left and right ends of the box 7. An elastic telescopic tube 9 is fixedly connected, a connecting tube 10 is fixedly connected to the upper end of the box body 7, a second electric valve 11 is arranged inside the connecting tube 10, a connecting block 12 is fixedly connected to the left end of the filling port 1, a hose 13 is fixedly connected to the left end of the connecting block 12, a sleeve 14 is fixedly connected to the upper end of the hose 13, a hydraulic cylinder 15 is fixedly connected inside the sleeve 14, a piston 16 is fixedly connected to the upper end of the hydraulic cylinder 15, a sealing ring 17 is fixedly connected to the inner side of the upper end of the sleeve 14, and a medicine outlet pipe 18 is fixedly connected to the inner side of the lower end of the box body 7.

[0019] The flow monitor 3, the turbine assembly 4 and the conversion meter 5 are electrically connected, the controller 6 is located at the lower end of the flow monitor 3, the box body 7 is hollow inside, the number of electric telescopic rods 8 is two, the outer side of the upper end of the elastic telescopic tube 9 is fixedly connected to the box body 7, the elastic telescopic tube 9 is located inside the box body 7, the connecting block 12 is located at the lower end of the box body 7, the sleeve 14 is hollow inside, the piston 16 is located inside the sleeve 14, the outer side of the piston 16 is in contact with the inner wall of the sleeve 14, the sealing ring 17 is annular in shape, the inner side of the sealing ring 17 is tightly fitted with the outer side of the lower end of the medicine outlet pipe 18, and the lower end of the filling port 1 is in contact with the inner side of the medicine outlet pipe 18. A first electric valve 2 is provided on the side, a flow monitor 3 is fixedly connected to the right end of the filling port 1, a turbine assembly 4 is provided inside the filling port 1, a conversion meter 5 is fixedly connected to the right end of the flow monitor 3, a controller 6 is fixedly connected to the right end of the filling port 1, a box 7 is fixedly connected to the upper end of the filling port 1, and electric telescopic rods 8 are fixedly connected to the inner walls of the left and right ends of the box 7, which are convenient for setting the electric telescopic rod 8, elastic telescopic tube 9, hydraulic cylinder 15 and piston 16. When the filling is completed, the controller 6 is started to control the first electric valve 2 and the second electric valve 11 to close, and the electric The telescopic rod 8 drives the elastic telescopic tube 9 to move, so that the elastic telescopic tube 9 becomes an "S" shape, thereby extending the circulation route of the pesticide in the elastic telescopic tube 9, reducing the circulation speed of the pesticide, so that the end of the elastic telescopic tube 9 is located at the upper end of the medicine outlet pipe 18, and the pesticide flows into the medicine outlet pipe 18, and the hydraulic cylinder 15 is started. The hydraulic cylinder 15 drives the piston 16 to move downward, and the intercepted pesticide is quickly adsorbed, thereby reducing the intercepted pesticide flowing into the upper end of the first electric valve 2. The impact on the next filling detection of the flow monitor 3 is reduced, and the metering of the next filling detection of the flow monitor 3 is reduced. A large error occurs; one end of the electric telescopic rod 8 is fixedly connected to an elastic telescopic tube 9, the upper end of the box body 7 is fixedly connected to a connecting tube 10, a second electric valve 11 is provided inside the connecting tube 10, the left end of the filling port 1 is fixedly connected to a connecting block 12, the left end of the connecting block 12 is fixedly connected to a hose 13, the upper end of the hose 13 is fixedly connected to a sleeve 14, the inside of the sleeve 14 is fixedly connected to a hydraulic cylinder 15, the upper end of the hydraulic cylinder 15 is fixedly connected to a piston 16, the inner side of the upper end of the sleeve 14 is fixedly connected to a sealing ring 17, and the inner side of the lower end of the box body 7 is fixedly connected to a medicine outlet pipe 18.

[0020] Working process: During use, the device is powered on by an external power supply, a first electric valve 2 is arranged inside the filling port 1, a flow monitor 3 is fixedly connected to the right end of the filling port 1, a turbine assembly 4 is arranged inside the filling port 1, a conversion meter 5 is fixedly connected to the right end of the flow monitor 3, a controller 6 is fixedly connected to the right end of the filling port 1, a box 7 is fixedly connected to the upper end of the filling port 1, electric telescopic rods 8 are fixedly connected to the inner walls of the left and right ends of the box 7, an elastic telescopic tube 9 is fixedly connected to one end of the electric telescopic rod 8, a connecting tube 10 is fixedly connected to the upper end of the box 7, a second electric valve 11 is arranged inside the connecting tube 10, when the pesticide is filled, the second electric valve 11 and the first electric valve 2 are opened by the controller 6, the pesticide flows into the filling port 1 through the elastic telescopic tube 9, the flow monitor 3, the turbine assembly 4 and the conversion meter 5 form a liquid metering device, the pesticide flowing out of the filling port 1 is detected, after a certain volume flows out, the second electric valve 11 and the first electric valve 2 are closed by the controller 6, the inner side of the lower end of the box 7 is fixedly connected to the medicine outlet The electric telescopic rod 8 is started at the same time, and the electric telescopic rod 8 drives the elastic telescopic tube 9 to move, so that the elastic telescopic tube 9 becomes an "S" shape, thereby extending the circulation route of the pesticide in the elastic telescopic tube 9, reducing the circulation speed of the pesticide, and then the end of the elastic telescopic tube 9 is located at the upper end of the medicine outlet tube 18, and the pesticide flows into the medicine outlet tube 18. The left end of the filling port 1 is fixedly connected to the connecting block 12, the left end of the connecting block 12 is fixedly connected to the hose 13, the upper end of the hose 13 is fixedly connected to the sleeve 14, and the inside of the sleeve 14 is fixedly connected to the liquid The air cylinder 15 is pressed, and a piston 16 is fixedly connected to the upper end of the hydraulic cylinder 15. A sealing ring 17 is fixedly connected to the inner side of the upper end of the sleeve 14. The sleeve 14 is tightly fitted with the inner side of the lower end of the medicine outlet pipe 18 through the sealing ring 17. The hydraulic cylinder 15 is started, and the hydraulic cylinder 15 drives the piston 16 to move downward to quickly adsorb the intercepted pesticide, thereby reducing the intercepted pesticide flowing into the upper end of the first electric valve 2 to affect the next filling detection of the flow monitor 3, and reducing the large measurement error of the next filling detection of the flow monitor 3.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid pesticide metering device, comprising a filling port (1), a first electric valve (2), a flow monitor (3) and a turbine assembly (4), characterized in that: A first electric valve (2) is provided on the inner side of the lower end of the filling port (1); a flow monitor (3) is fixedly connected to the right end of the filling port (1); a turbine assembly (4) is provided inside the filling port (1); a conversion meter (5) is fixedly connected to the right end of the flow monitor (3); a controller (6) is fixedly connected to the right end of the filling port (1); a box (7) is fixedly connected to the upper end of the filling port (1); electric telescopic rods (8) are fixedly connected to the inner walls of the left and right ends of the box (7); one end of the electric telescopic rod (8) is fixedly connected to an elastic telescopic tube (9); the upper end of the box (7) is fixedly connected to the inner walls of the left and right ends of the box (7); A connecting pipe (10) is connected, a second electric valve (11) is arranged inside the connecting pipe (10), a connecting block (12) is fixedly connected to the left end of the filling port (1), a hose (13) is fixedly connected to the left end of the connecting block (12), a sleeve (14) is fixedly connected to the upper end of the hose (13), a hydraulic cylinder (15) is fixedly connected to the inside of the sleeve (14), a piston (16) is fixedly connected to the upper end of the hydraulic cylinder (15), a sealing ring (17) is fixedly connected to the inner side of the upper end of the sleeve (14), and a medicine outlet pipe (18) is fixedly connected to the inner side of the lower end of the box body (7).

2. A liquid pesticide metering device according to claim 1, characterized in that: The flow monitor (3), the turbine assembly (4) and the conversion instrument (5) are electrically connected, the controller (6) is located at the lower end of the flow monitor (3), and the interior of the box (7) is hollow.

3. A liquid pesticide metering device according to claim 1, characterized in that: The number of the electric telescopic rods (8) is two, the outer side of the upper end of the elastic telescopic tube (9) is fixedly connected to the box body (7), and the elastic telescopic tube (9) is located inside the box body (7).

4. A liquid pesticide metering device according to claim 1, characterized in that: The connecting block (12) is located at the lower end of the box body (7), the interior of the sleeve (14) is hollow, and the piston (16) is located inside the sleeve (14).

5. A liquid pesticide metering device according to claim 1, characterized in that: The outer side of the piston (16) fits closely with the inner wall of the sleeve (14); the outer shape of the sealing ring (17) is annular; the inner side of the sealing ring (17) fits closely with the outer side of the lower end of the medicine outlet tube (18).

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