Liquid chemical split charging equipment

Abstract

The utility model belongs to the technical field of chemical split charging, and particularly relates to liquid chemical split charging equipment which comprises a negative pressure box and a diaphragm type metering pump fixedly connected with the outer side of the negative pressure box, the output end of the diaphragm type metering pump extends into the negative pressure box, and a rotating base, a clamping sleeve, a mounting plate and a hydraulic cylinder are sequentially arranged in the negative pressure box from bottom to top. Wherein the middle of the lower surface of the rotating base is rotationally connected to the lower wall of the negative pressure box, the clamping sleeve is of a disc-shaped structure with a lower opening, the servo motor is fixed to the upper surface of the mounting plate and penetrates through the mounting plate downwards to be fixedly connected to the middle of the upper surface of the clamping sleeve, and a hydraulic rod of the hydraulic cylinder is fixedly connected to the upper surface of the mounting plate downwards; the upper ends of the hydraulic cylinders are fixedly connected to the upper wall of the negative-pressure box. All chemical barrels can be filled and capped, liquid raw materials in the chemical barrels cannot be directly exposed in the air, and the safety coefficient of liquid raw material split charging of workers is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical product sub-packaging, and particularly relates to a liquid chemical product sub-packaging device. Background Art

[0002] Liquid raw materials in chemical products are generally transported by tank trucks. After arriving at the destination, they are pumped into large storage tanks. When in use, a diaphragm pump or other tools are used to quantitatively extract and sub-package them into chemical barrels. These chemical barrels can be made of iron barrels, resin barrels, fluorinated barrels, etc. according to different uses. After being opened, they are placed under the liquid outlet pipe to receive the liquid raw materials.

[0003] Since the liquid raw materials are concentrated together, partial volatilization is likely to occur. The chemical barrels need to be sub-packaged in a sealed environment or a negative pressure environment. Among them, the negative pressure environment is based on the sealed environment, with an exhaust passage connected and an exhaust fan used to extract air in the exhaust passage, and the tail gas is introduced into the resin to adsorb harmful substances.

[0004] When sub-packaging existing liquid raw materials, multiple chemical barrels are rotated in a negative pressure environment, and the liquid raw materials are poured into them one by one. However, the lids of the chemical barrels need to be opened in advance when putting them in, and the lids are not covered when the sub-packaging is completed. As a result, the opening of the chemical barrel is directly exposed to the air after being taken out, resulting in partial volatilization. There is a risk that the staff will inhale the volatile gas when manually covering the lid. For this reason, we propose a liquid chemical product sub-packaging device. Content of the Utility Model

[0005] The purpose of the utility model is to provide a liquid chemical product sub-packaging device, which can fill and cover all chemical barrels, so that the liquid raw materials in the chemical barrels will not be directly exposed to the air, and the safety factor of the staff for sub-packaging liquid raw materials is improved.

[0006] The technical solution adopted by the utility model is specifically as follows:

[0007] A liquid chemical product sub-packaging device includes a negative pressure box and a diaphragm metering pump fixedly connected to the outside of the negative pressure box. The output end of the diaphragm metering pump extends into the interior of the negative pressure box. Inside the negative pressure box, a rotating base, a jacket, a mounting plate, and a hydraulic cylinder are sequentially arranged from bottom to top, where:

[0008] The middle of the lower surface of the rotating base is rotatably connected to the lower wall of the negative pressure tank. The jacket is in the shape of a disk structure with a lower opening. A servo motor is fixed on the upper surface of the mounting plate. The servo motor penetrates downward through the mounting plate and is fixedly connected to the middle of the upper surface of the jacket. The hydraulic rod of the hydraulic cylinder is fixedly connected downward to the upper surface of the mounting plate, and the upper end of the hydraulic cylinder is fixedly connected to the upper wall of the negative pressure tank. During operation, a specified number of empty chemical barrels are placed at intervals on the rotating base. The rotating base rotates a chemical barrel directly below the jacket, and then the hydraulic cylinder is controlled to lower the jacket to cover and frictionally bind the lid of the chemical barrel. At this time, the servo motor is started to rotate the jacket forward, and the hydraulic cylinder is slowly lifted to unscrew the lid. The lid gets stuck inside the jacket. After that, the rotating base rotates the chemical barrel until the opening is directly opposite the output end of the diaphragm metering pump, and a quantitative liquid raw material is suctioned and pumped into the chemical barrel. Then, it is rotated back directly below the jacket again, the lid is lowered again to fall back on the chemical barrel, and the servo motor is controlled to rotate the jacket in reverse to screw on the lid. Finally, the jacket is lifted above the chemical barrel. In this way, all the chemical barrels are filled and capped. The airtight door can only be opened after the negative pressure tank discharges the exhaust gas, and the filled chemical barrels are taken out. The liquid raw material in the chemical barrel will not be directly exposed to the air, improving the safety factor for the staff to dispense the liquid raw material.

[0009] A number of positioning grooves are distributed in a circular array on the upper surface of the rotating base for placing each chemical barrel, using the positioning grooves to horizontally limit the chemical barrel and prevent the chemical barrel from slipping due to inertia during rotation.

[0010] An annular elastic rubber ring is bonded inside the jacket, and the elastic rubber ring is in interference fit with the lid to increase the frictional force between the jacket and the lid and facilitate clamping the lid.

[0011] At least two guide rails are also fixed on the upper wall of the negative pressure tank. The lower ends of the guide rails all penetrate downward through the mounting plate. When the mounting plate moves up and down, it slides along the guide rails. The guide rails horizontally support the hydraulic rod of the hydraulic cylinder, enabling the hydraulic cylinder to maintain vertical movement and removing the load in the horizontal direction.

[0012] A rotating motor is fixed on the lower surface of the negative pressure tank. The output end of the rotating motor extends upward into the interior of the negative pressure tank and is fixedly connected to the middle of the lower surface of the rotating base. The rotating base is driven to rotate by the rotating motor, and the chemical barrels on the rotating base can be driven to move in turn to be directly opposite the jacket and the liquid outlet port of the diaphragm metering pump by setting the number of rotation turns in the program.

[0013] The middle of the upper surface of the negative pressure tank protrudes upward in the shape of a hollow trapezoidal platform. An exhaust fan is fixedly penetrated through the upper end of the protruding part of the negative pressure tank. The air outlet of the exhaust fan is connected to the gas treatment air duct, and the air duct is filled with adsorption resin to adsorb the harmful components in the gas. Before taking out the chemical barrel, the exhaust fan 12 should continuously exhaust air for more than 1 minute.

[0014] The technical effects achieved by the present utility model are as follows:

[0015] In a liquid chemical product dispensing device of the present utility model, during operation, a specified number of empty chemical barrels are placed at intervals on a rotating base. The rotating base rotates a chemical barrel to directly below the jacket, and then the hydraulic cylinder is controlled to lower the jacket to cover and use friction to restrain the lid of the chemical barrel. At this time, the servo motor is started to rotate the jacket forward, and the hydraulic cylinder slowly rises to unscrew the lid. The lid gets stuck inside the jacket. After that, the rotating base rotates the chemical barrel until the opening is directly opposite the output end of the diaphragm metering pump, and a quantitative liquid raw material is suctioned and pumped into the chemical barrel. Then, it rotates back to directly below the jacket again, the lid is lowered back onto the chemical barrel, and the servo motor is controlled to rotate the jacket in reverse to screw the lid on. Finally, the jacket is lifted above the chemical barrel. In this way, all the chemical barrels are filled and capped. The airtight door can only be opened after the negative pressure box discharges the exhaust gas, and the filled chemical barrels are taken out. The liquid raw material in the chemical barrels will not be directly exposed to the air, improving the safety factor for the staff to dispense the liquid raw material. Description of the Drawings

[0016] Figure 1 is the front view of a liquid chemical product dispensing device of the present utility model;

[0017] Figure 2 is the cross-sectional view of a liquid chemical product dispensing device of the present utility model;

[0018] Figure 3 is the front view of the rotating base of the present utility model;

[0019] Figure 4 is the bottom view of the mounting plate of the present utility model;

[0020] Figure 5 is the system block diagram of the control panel of a liquid chemical product dispensing device of the present utility model.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Negative pressure box; 2. Diaphragm metering pump; 3. Rotating base; 4. Jacket; 5. Mounting plate; 6. Servo motor; 7. Hydraulic cylinder; 8. Positioning groove; 9. Elastic rubber ring; 10. Guide rail; 11. Rotating motor; 12. Exhaust fan. Detailed Embodiments

[0023] In order to make the purpose and advantages of the present utility model clearer, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text only describes one or several specific implementation manners of the present utility model, and does not strictly limit the specific scope of protection claimed by the present utility model.

[0024] As Figures 1-5 shown, a liquid chemical sub-packaging device includes a negative pressure box 1 and a diaphragm metering pump 2 fixedly connected to the outside of the negative pressure box 1. The liquid inlet end of the diaphragm metering pump 2 communicates with a liquid raw material storage tank, and the output end of the diaphragm metering pump 2 extends into the negative pressure box 1. Inside the negative pressure box 1, a rotating base 3, a jacket 4, a mounting plate 5, and a hydraulic cylinder 7 are arranged in sequence from bottom to top. The rotation mode of the rotating base 3 can refer to a Chinese utility model with the publication number CN220300395U, a liquid chemical sub-packaging device, which rotates a certain angle under the control of a servo turntable on the control panel. Among them:

[0025] The middle of the lower surface of the rotating base 3 is rotatably connected to the lower wall of the negative pressure box 1. The jacket 4 is in the shape of a disk structure with a lower opening. A servo motor 6 is fixedly installed on the upper surface of the mounting plate 5. The servo motor 6 can be selected from the YEJ series of three-phase asynchronous motors. The servo motor 6 penetrates downward through the mounting plate 5 and is fixedly connected to the middle of the upper surface of the jacket 4. The hydraulic rod of the hydraulic cylinder 7 is fixedly connected downward to the upper surface of the mounting plate 5. The hydraulic cylinder 7, the servo motor 6, and the diaphragm metering pump 2 are all signal-connected to the control panel. The upper end of the hydraulic cylinder 7 is fixedly connected to the upper wall of the negative pressure box 1. An airtight door is provided on the back of the negative pressure box 1. During operation, open the airtight door, place a specified number of empty chemical barrels at intervals on the rotating base 3, and close the airtight door. Rotate the rotating base 3 to move a chemical barrel directly below the jacket 4, and then control the hydraulic cylinder 7 to lower the mounting plate 5, driving the jacket 4 to enclose and frictionally bind the lid of the chemical barrel;

[0026] At this time, start the servo motor 6 to rotate the jacket 4 forward, and slowly lift the hydraulic cylinder 7 to unscrew the lid. The lid is stuck inside the jacket 4. Then, rotate the chemical barrel by the rotating base 3 until the opening is directly opposite the output end of the diaphragm metering pump 2, and use the diaphragm metering pump 2 to suck and pump a fixed amount of liquid raw material into the chemical barrel;

[0027] Then, rotate the rotating base 3 back to directly below the jacket 4 again, lower the mounting plate 5 again, drive the lid to fall back onto the chemical barrel, and control the servo motor 6 to rotate the jacket 4 in reverse to screw on the lid. Finally, lift the jacket 4 above the chemical barrel;

[0028] In this way, all chemical barrels are filled and capped. The airtight door can only be opened after the negative pressure box 1 discharges the tail gas. Take out the filled chemical barrels. The liquid raw material in the chemical barrels will not be directly exposed to the air, improving the safety factor for workers to sub-package the liquid raw material.

[0029] Among them, the output end of the diaphragm metering pump 2 extending into the negative pressure box 1 is no more than 5 cm higher than the chemical barrel, so that when pumping out the liquid raw material, no obvious splashing occurs, and very little liquid raw material splashes out. During the sub-packaging process, the tail gas in the negative pressure box 1 is continuously discharged into the gas treatment air duct.

[0030] As Figure 2 and Figure 3 shown, a plurality of positioning grooves 8 are arranged in a circumferential array on the upper surface of the rotating base 3 for placing each chemical barrel. The positioning grooves 8 are used to horizontally limit the chemical barrel to prevent the chemical barrel from slipping due to inertia during rotation.

[0031] As Figure 1 、 Figure 2 and Figure 4 shown, an annular elastic rubber ring 9 is adhesively bonded inside the jacket 4. The elastic rubber ring 9 can be made of fluororubber. The elastic rubber ring 9 is in interference fit with the lid to increase the frictional force between the jacket 4 and the lid, facilitating clamping of the lid.

[0032] As Figure 1 、 Figure 2 and Figure 4 shown, at least two guide rails 10 are fixed on the upper wall of the negative pressure box 1. The lower ends of the guide rails 10 penetrate downward through the mounting plate 5. When the mounting plate 5 moves up and down, it slides along the guide rails 10. The guide rails 10 horizontally support the hydraulic rod of the hydraulic cylinder 7, enabling the hydraulic cylinder 7 to maintain vertical movement and removing the load in the horizontal direction.

[0033] As Figure 1 、 Figure 2 and Figure 3 shown, a rotating motor 11 is fixed on the lower surface of the negative pressure box 1. The rotating motor 11 can be a YEJ series three-phase asynchronous motor. The rotating motor 11 is signal-connected to the control panel. The output end of the rotating motor 11 extends upward into the interior of the negative pressure box 1 and is fixedly connected to the middle of the lower surface of the rotating base 3. The rotating base 3 is driven to rotate by the rotating motor 11. By setting the number of rotation cycles in the program, the chemical barrels on the rotating base 3 can be driven to move in turn to face the jacket 4 and the liquid outlet port of the diaphragm metering pump 2.

[0034] As Figure 1 、 Figure 2 and Figure 5 shown, the middle of the upper surface of the negative pressure box 1 protrudes upward as a hollow trapezoidal platform. The upper end of the protruding part of the negative pressure box 1 is fixedly penetrated with an exhaust fan 12. The exhaust fan 12 is signal-connected to the control panel. The air outlet of the exhaust fan 12 is connected to a gas treatment air duct filled with adsorption resin for adsorbing harmful components in the gas. Before removing the chemical barrel, the exhaust fan 12 should be continuously exhausted for more than 1 minute.

[0035] The working principle of the utility model is as follows: during operation, open the airtight door, place a specified number of empty chemical barrels at intervals on the rotating base 3, and close the airtight door. Rotate the rotating base 3 to move a chemical barrel directly below the jacket 4, and then control the hydraulic cylinder 7 to lower the mounting plate 5, driving the jacket 4 to cover and use friction to hold the lid of the chemical barrel. At this time, start the servo motor 6 to rotate the jacket 4 forward, and the hydraulic cylinder 7 slowly lifts to unscrew the lid, which gets stuck inside the jacket 4.

[0036] After that, rotate the chemical barrel by the rotating base 3 until the opening is directly opposite the output end of the diaphragm metering pump 2, and use the diaphragm metering pump 2 to suck a quantitative liquid raw material and pump it into the chemical barrel.

[0037] Then, rotate the rotating base 3 back to directly below the jacket 4, lower the mounting plate 5 again, drive the lid to fall back onto the chemical barrel, and control the servo motor 6 to rotate the jacket 4 in reverse to screw on the lid.

[0038] Finally, lift the jacket 4 above the chemical barrel. In this way, all the chemical barrels are filled and capped. The airtight door can only be opened after the negative pressure box 1 discharges the tail gas, and the filled chemical barrels are taken out. The liquid raw material in the chemical barrels will not be directly exposed to the air, improving the safety factor for the staff to dispense the liquid raw material.

[0039] The above is only the preferred embodiment of the utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model. The structures, devices, and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in this field without special instructions and limitations.

Claims

1. A liquid chemical packaging device, comprising a negative pressure box (1) and a diaphragm metering pump (2) fixedly connected to the outside of the negative pressure box (1), wherein the output end of the diaphragm metering pump (2) extends into the interior of the negative pressure box (1), characterized in that: The negative pressure box (1) is provided with a rotating base (3), a jacket (4), a mounting plate (5) and a hydraulic cylinder (7) in order from bottom to top, wherein: The middle of the lower surface of the rotating base (3) is rotatably connected to the lower wall of the negative pressure box (1); the jacket (4) is a disc-shaped structure with an opening at the bottom; a servo motor (6) is fixed to the upper surface of the mounting plate (5); the servo motor (6) passes through the mounting plate (5) downward and is fixedly connected to the middle of the upper surface of the jacket (4); the hydraulic rod of the hydraulic cylinder (7) is fixedly connected downward to the upper surface of the mounting plate (5); and the upper end of the hydraulic cylinder (7) is fixedly connected to the upper wall of the negative pressure box (1).

2. A liquid chemical packaging equipment according to claim 1, characterized in that: The upper surface of the rotating base (3) is provided with a plurality of positioning grooves (8) distributed in a circumferential array.

3. The liquid chemical packaging equipment according to claim 1, characterized in that: An annular elastic rubber ring (9) is bonded inside the jacket (4).

4. The liquid chemical packaging equipment according to claim 1, characterized in that: At least two guide rails (10) are also fixed to the upper wall of the negative pressure box (1), and the lower ends of the guide rails (10) penetrate the mounting plate (5) downward.

5. The liquid chemical packaging equipment according to claim 1, characterized in that: A rotating motor (11) is fixed on the lower surface of the negative pressure box (1), and the output end of the rotating motor (11) extends upward into the interior of the negative pressure box (1) and is fixedly connected to the middle of the lower surface of the rotating base (3).

6. The liquid chemical packaging equipment according to claim 1, characterized in that: The middle of the upper surface of the negative pressure box (1) protrudes upward in the form of a hollow trapezoidal platform, and an exhaust fan (12) is fixedly penetrated at the upper end of the protruding part of the negative pressure box (1).

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