Acid immersion cleaning device

Abstract

The utility model relates to an acid immersion cleaning device which comprises an immersion cleaning cylinder and a cover plate, the cover plate is arranged above the immersion cleaning cylinder and movably connected with the immersion cleaning cylinder, and the cover plate and the immersion cleaning cylinder can form a closed cavity. The circulating pump comprises a circulating pump inlet and a circulating pump outlet; the rectifying tube is arranged in the closed cavity and comprises an open end and a closed end, the open end is connected with the circulating pump outlet, and a plurality of rectifying holes are formed in the tube wall of the rectifying tube; the conveying branch pipes are arranged in the closed cavity, one end of each conveying branch pipe is connected with the rectifying hole, and the other end of each conveying branch pipe is provided with a countersunk head; the multi-way valve is arranged outside the closed cavity and is connected with an inlet of the circulating pump; and the waste liquid barrel is connected with the multi-way valve. The device solves the problem that in the prior art, waste liquid in an appliance cannot be removed, and the acid immersion cleaning efficiency of the laboratory appliance is greatly improved.

Description

An acid immersion washing device Technical Field

[0001] This invention relates to the field of experimental equipment technology, and in particular to an acid immersion washing device. Background Technology

[0002] In drinking water quality testing, sampling containers for general physicochemical and microbiological indicators are required to be washed before sampling, typically by soaking in 10% nitric acid (or hydrochloric acid) for at least 8 hours (GB / T 5750.2-2023, Standard Examination Methods for Drinking Water - Part 2: Collection and Preservation of Water Samples). In the field of ecological environment monitoring, sampling containers for heavy metal indicators in natural water, domestic sewage, and industrial wastewater samples must be soaked in a 1 mol / L solution of hydrochloric acid, nitric acid, or chromic acid-sulfuric acid for 1-2 days before use (HJ 493-2009, Technical Regulations for the Preservation and Management of Water Samples).

[0003] Based on the preparation requirements for various water sample containers, the laboratory needs to be equipped with corresponding soaking equipment. The commonly used soaking equipment is a cubic water tank made of PVC material. Laboratory personnel add acid solution themselves and put the equipment to be soaked into the water tank containing acid solution. After soaking for the required time, laboratory personnel wear acid and alkali resistant gloves to remove the equipment with acid solution on the surface, rinse it with water, and let it dry before use.

[0004] During acid immersion cleaning, laboratory personnel are easily exposed to toxic and harmful substances. Lightweight instruments often float on the surface of the acid solution without being effectively immersed. After immersion, the instruments are often rinsed directly under the tap, and the acid is discharged directly. Toxic and harmful reagents are not properly disposed of, causing environmental pollution.

[0005] Therefore, there is a need to design an acid immersion washing device for laboratory equipment that can solve the above problems. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to overcome the defects or deficiencies of the prior art and provide an acid immersion washing device.

[0007] An acid leaching apparatus includes an leaching tank and a cover plate, the cover plate being disposed above the leaching tank and movably connected to the leaching tank, the cover plate and the leaching tank forming a sealed cavity; a circulation pump, including a circulation pump inlet and a circulation pump outlet; a rectifier pipe disposed within the sealed cavity, including an open end and a closed end, the open end being connected to the circulation pump outlet, the rectifier pipe having a plurality of rectifier holes on its wall; a plurality of delivery branch pipes disposed within the sealed cavity, one end of each delivery branch pipe being connected to the rectifier holes, the other end having a countersunk head; a multi-way valve disposed outside the sealed cavity, the multi-way valve being connected to the circulation pump inlet; and a waste liquid tank, the waste liquid tank being connected to the multi-way valve.

[0008] Compared with existing technologies, the acid immersion washing device of this utility model has a simple structure, low cost, and improved automation level and safety. At the same time, the use of several conveying branch pipes with sinkers solves the problem of waste liquid not being removed from the inside of the equipment in the existing technology, which can greatly improve the acid immersion washing efficiency of laboratory equipment.

[0009] In one embodiment, a drain outlet is further included, which is located at the lowest point of the bottom of the immersion tank; the drain outlet is connected to the multi-way valve.

[0010] In one embodiment, a partition plate detachably disposed within the immersion tank is further included, the partition plate having a plurality of partition plate through holes.

[0011] In one embodiment, a screen is provided above the drain outlet.

[0012] In one embodiment, the system further includes an acid tank and a rinsing water tank, and the multi-way valve has multiple ports, including a first port, a second port, a third port, a fourth port, and a fifth port; wherein, the first port is connected to the acid tank via a pipeline, the second port is connected to the circulating pump via a pipeline, the third port is connected to the waste liquid tank via a pipeline, the fourth port is connected to the rinsing water tank via a pipeline, and the fifth port is connected to the drain port via a pipeline.

[0013] In one embodiment, a drying module is also included, which includes an air supply duct and an exhaust port disposed on the cover plate. The air supply duct passes through the cover plate and a blower is disposed inside the air supply duct. The blower is used to deliver external gas into the sealed cavity. When the blower is working, if the air pressure in the sealed cavity reaches the opening threshold of the exhaust port, the exhaust port will automatically open to discharge external air.

[0014] In one embodiment, a heating element is also provided at the air outlet of the blower.

[0015] In one embodiment, an anti-backflow element is also provided at the air outlet of the blower.

[0016] In one embodiment, a control module is also included, comprising a liquid level sensor and a controller. The liquid level sensor is located at the drain port and can detect the liquid level height of the liquid entering the immersion tank at any time. The controller is electrically or communicatively connected to the liquid level sensor, the circulating pump, the multi-way valve, the blower, and the heating element, respectively.

[0017] In one embodiment, the heating element is an electric heating tube, and the anti-backflow element is a mechanical check valve.

[0018] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 is a cross-sectional view of the acid leaching device provided by this utility model;

[0020] Figure 2 is a top view of the acid leaching device provided by this utility model. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] As shown in Figures 1 and 2, the acid immersion cleaning device for laboratory equipment of the present invention includes an immersion cleaning module 10, an external medium storage and conveying module 20 connected to the immersion cleaning module 10, a drying module 30 connected to the immersion cleaning module 10, and a control module 40 electrically or communicatively connected to the immersion cleaning module 10, the external medium storage and conveying module 20, and the drying module 30. The immersion cleaning module 10 is used to carry the equipment; the external medium storage and conveying module 20 is used to store, accurately convey, and recover the external medium; the drying module 30 is used to quickly dry the cleaned equipment; and the control module 40 is used to control the operation of the above modules.

[0023] The soaking and cleaning module 10 includes a soaking tank 11, which is a hollow cavity with its opening facing upwards; and a cover plate 12, which is disposed on the opening of the soaking tank 11 and movably connected to the soaking tank 11. The cover plate 12 and the soaking tank 11 can form a closed cavity Q, and the appliance to be cleaned can be placed in the closed cavity Q. A drain port 13 is provided at the lowest point of the bottom of the soaking tank 11 for draining the liquid in the soaking tank 11.

[0024] In order to place the vessel lids and utensils in layers, a partition 14 is also included that can be detachably installed in the soaking and cleaning tank. The partition 14 is provided with a number of partition through holes (not shown).

[0025] In specific implementation, the number of partitions 14 is determined by the actual needs of the user. In this embodiment, the device is provided with two partitions 14, including a first partition 14A and a second partition 14B.

[0026] The external medium storage and delivery module 20 includes an acid tank 21, a multi-way valve 22, a circulation pump 23, a rectifier pipe 24, and a delivery branch pipe 25 connected in sequence. The acid tank 21 can be replaced by a waste liquid tank 26 or a rinse water tank 27.

[0027] The acid tank 21 is located outside the sealed cavity. It can contain nitric acid, hydrochloric acid, chromic acid-sulfuric acid, etc. The type of acid is not limited in this application, and users can choose flexibly according to their needs.

[0028] To increase the applicability of this device, different types of acid solutions can be selected according to user needs. Several acid solution tanks 21 can be provided, and correspondingly, the number of ports of the multi-way valve 22 connected to them also increases.

[0029] The multi-way valve 22 is disposed outside the sealed cavity and has multiple ports, including a first port, a second port, a third port, a fourth port, and a fifth port (not shown in the figure). The first port is connected to the acid tank 21 via a pipeline, the second port is connected to the circulating pump 23 via a pipeline, the third port is connected to the waste liquid tank 26 via a pipeline, the fourth port is connected to the rinsing water tank 27 via a pipeline, and the fifth port is connected to the drain port 13 via a pipeline.

[0030] Specifically, the multi-way valve includes a valve body and a valve core. The valve core has multiple channels and notches inside, and the valve body has multiple ports. By rotating the valve core, the channels and notches inside the valve core are aligned with or offset from the ports on the valve body, thereby achieving connection or disconnection between different ports.

[0031] The circulating pump 23 is fixedly mounted on the cover plate 12. It includes a circulating pump inlet (not shown) and a circulating pump outlet (not shown). The circulating pump inlet is connected to the outside of the sealed cavity Q and to the second port of the multi-way valve. The circulating pump outlet is connected to the inside of the sealed cavity Q.

[0032] The rectifier tube 24 is disposed in the sealed cavity Q. The rectifier tube 24 includes an open end (not shown) and a closed end (not shown). The open end is connected to the outlet of the circulating pump. The rectifier tube 24 has a plurality of rectifier holes (not shown) on its tube wall.

[0033] The delivery branch pipe 25 is disposed inside the sealed cavity Q, with one end connected to the rectifier hole and the other end being a free end; specifically, the number of delivery branch pipes 25 is the same as the number of rectifier holes on the rectifier pipe 24.

[0034] To prevent lightweight appliances from floating and causing incomplete soaking, a countersunk head 28 is provided at the free end of the delivery branch pipe 25.

[0035] The waste liquid tank 26 is located outside the sealed cavity and is used to collect acid liquid after cleaning the equipment.

[0036] The rinsing water tank 27 is located outside the sealed cavity. It can contain deionized water, distilled water, tap water or laboratory pure water. The water quality is not limited in this application, and users can choose flexibly according to experimental requirements.

[0037] To reduce the size of the device, the multi-way valve 22, acid tank 21, waste liquid tank 26, and rinsing water tank 27 are located below the immersion tank 11.

[0038] To prevent laboratory equipment from generating tiny fragments or carrying particulate contaminants that may directly enter the circulation pump 23 or multi-way valve 22 during long-term use, a screen 15 is installed above the drain port 13.

[0039] The air drying module 30 includes an air supply duct 31 and an exhaust port 32 disposed on the cover plate 12. The air supply duct 31 passes through the cover plate 12 and a blower 33 is disposed inside the air supply duct 31. The blower 33 is used to supply external gas into the sealed cavity Q for drying the surface of the cleaned utensil lids and utensils. When the blower 33 is working, the exhaust port 32 automatically opens when the air pressure in the sealed cavity Q reaches the opening threshold value of the exhaust port 32, thereby discharging the external air.

[0040] To improve drying efficiency, a heating element 34 is also included at the air outlet of the blower 33 for heating the external gas.

[0041] In a specific implementation, the heating element 34 is an electric heating tube.

[0042] To prevent acid mist from flowing back into the blower 33, an anti-backflow element 35 is also included, which is installed at the air outlet of the blower 33.

[0043] In practical implementation, the anti-backflow element 35 is a mechanical check valve, which opens by airflow pressure and closes by gravity / spring reset.

[0044] In one embodiment, in order to simultaneously improve drying efficiency and prevent acid mist from flowing back into the blower 33, a heating element 34 and an anti-backflow element 35 are sequentially arranged at the air outlet of the blower 33 along the air outlet direction of the blower 33.

[0045] The control module 40 includes a liquid level sensor 41 and a controller 42. The liquid level sensor 41 is located at the drain port 13 and can detect the liquid level height of the liquid entering the immersion tank 11 at any time. The controller 42 is electrically or communicatively connected to the liquid level sensor 41, the circulating pump 23, the multi-way valve 22, the blower 33, and the heating element 34.

[0046] The workflow of the laboratory equipment acid immersion washing device of the present invention includes three stages: preparation stage, acid immersion washing stage, rinsing stage, and air drying stage.

[0047] The preparation stage is as follows: First, inject different acid solutions into the corresponding acid solution tanks 21. Open the cover plate 12 above the immersion tank 11. Movably set the first partition plate 14A in the immersion tank 11 and place the container lid on the first partition plate 14A. Then, place the second partition plate 14B on top of the container lid and place the open container on the second partition plate 14B. At this time, the free end of the delivery branch pipe 25 with the countersunk head 28 is respectively set in each container and the partition through hole on the partition plate 14 is set at the bottom of the immersion tank 11. In addition, the immersion parameters need to be set in the controller 42 in advance, including acid solution type, zero liquid level, immersion liquid level, rinsing liquid level, immersion time, rinsing time, air drying time and air drying temperature.

[0048] The acid immersion stage is as follows: The multi-way valve 22 is connected to the circulation pump 23 and the acid tank 21 containing the selected acid type, controlling the operation of the circulation pump 23. Under its action, the acid flows from the acid tank 21 through the multi-way valve 22, the circulation pump 23, and the delivery branch pipe 25 into the immersion tank 11 and the interior of the equipment. When the level sensor 41 detects that the acid in the immersion tank 11 has reached the set immersion level, it controls the circulation pump 23 to stop working. At this time, the multi-way valve 22 switches to connect with the circulation pump 23 and the drain port 13, and then controls the circulation pump 23 to work. Under its action, the acid in the immersion tank 11 flows through the drain port 13, the multi-way valve 22, the circulation pump 23, and the delivery branch pipe 25. The acid then flows into the immersion tank 11 and the interior of the appliance, continuously refreshing the acid in contact with the appliance surface, thereby improving the immersion efficiency. When the controller 42 detects that the set immersion time has been reached, it controls the circulation pump 23 to stop working. At this time, the multi-way valve 22 switches to connect with the circulation pump 23 and the acid tank 21 containing the selected acid type. Then, it controls the circulation pump 23 to work in reverse. Under its action, the acid in the immersion tank 11 flows through the delivery branch pipe 25, the circulation pump 23, and the multi-way valve 22 into the acid tank 21, realizing the recovery of the acid. When the liquid level sensor 41 detects that the acid in the immersion tank 11 has been discharged to the zero liquid level, it controls the multi-way valve 22 to close all ports.

[0049] The rinsing stage is as follows: The multi-way valve 22 is connected to the circulating pump 23 and the rinsing tank 27, controlling the operation of the circulating pump 23. Under its action, the rinsing solution flows from the rinsing tank 27 through the multi-way valve 22, the circulating pump 23, and the delivery branch pipe 25 into the immersion tank 11 and the interior of the appliance. When the level sensor 41 detects that the rinsing solution in the immersion tank 11 has reached the set rinsing level, it controls the circulating pump 23 to stop working. At this time, the multi-way valve 22 switches to connect with the circulating pump 23 and the drain port 13, and then controls the circulating pump 23 to work. Under its action, the rinsing solution in the immersion tank 11 flows through the drain port 13, the multi-way valve 22, the circulating pump 23, and the delivery branch pipe 25. The rinsing solution then flows into the rinsing tank 11 and the interior of the appliance, continuously refreshing the rinsing solution on the appliance surface, thereby improving rinsing efficiency. When the controller 42 detects that the set rinsing time has been reached, it controls the circulation pump 23 to stop working. At this time, the multi-way valve 22 switches to connect with the circulation pump 23 and the waste liquid tank 26, and then controls the circulation pump 23 to work in reverse. Under its action, the rinsing solution in the rinsing tank 11 flows through the delivery branch pipe 25, the circulation pump 23, and the multi-way valve 22 into the waste liquid tank 26, realizing the discharge of the rinsing solution. When the liquid level sensor 41 detects that the rinsing solution in the rinsing tank 11 has been discharged to the zero liquid level, it controls the multi-way valve 22 to close all ports.

[0050] The air-drying stage is as follows: the heating element 34 is controlled to work. After the heating element 34 reaches the set air-drying temperature, the blower 33 is controlled to work. Under the action of the blower 33, the outside air passes through the heating element 34 and the anti-backflow element 35 and enters the immersion tank 11, blowing on the lid and surface of the utensils to achieve drying. When the air pressure in the immersion tank 11 reaches the critical value for opening the exhaust port 32, the exhaust port 32 opens to discharge the outside air. When the controller 42 detects that the set air-drying time has been reached, it controls the blower 33 and the heating element 34 to stop working.

[0051] Compared with existing technologies, this utility model has a simple structure, is easy to install and modify, has low cost, and good effect. It can greatly improve the efficiency, automation level and safety of acid immersion washing of laboratory equipment, eliminate personal safety hazards and potential environmental pollution problems, and has a very good prospect for promotion.

[0052] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” means two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An acid leaching apparatus, characterized in that, include: The immersion tank and a cover plate, the cover plate being disposed above the immersion tank and movably connected to the immersion tank, the cover plate forming a sealed cavity with the immersion tank; a circulation pump, including a circulation pump inlet and a circulation pump outlet; a rectifier pipe disposed within the sealed cavity, including an open end and a closed end, the open end being connected to the circulation pump outlet, the rectifier pipe having a plurality of rectifier holes on its wall; a plurality of delivery branch pipes disposed within the sealed cavity, one end of each delivery branch pipe being connected to the rectifier holes, the other end having a countersunk head; a multi-way valve disposed outside the sealed cavity, the multi-way valve being connected to the circulation pump inlet; and a waste liquid tank, the waste liquid tank being connected to the multi-way valve.

2. The acid leaching apparatus according to claim 1, characterized in that: It also includes a drain outlet, which is located at the lowest point of the bottom of the immersion tank; the drain outlet is connected to the multi-way valve.

3. The acid leaching apparatus according to claim 2, characterized in that: It also includes a detachable partition installed inside the immersion tank, the partition having a plurality of partition through holes.

4. The acid leaching apparatus according to claim 3, characterized in that: A screen is installed above the drain outlet.

5. The acid leaching apparatus according to claim 4, characterized in that: It also includes an acid tank and a rinsing water tank, and the multi-way valve has multiple ports, including a first port, a second port, a third port, a fourth port, and a fifth port; wherein, the first port is connected to the acid tank via a pipeline, the second port is connected to the circulating pump via a pipeline, the third port is connected to the waste liquid tank via a pipeline, the fourth port is connected to the rinsing water tank via a pipeline, and the fifth port is connected to the drain port via a pipeline.

6. The acid leaching apparatus according to claim 5, characterized in that: It also includes a drying module, which includes an air supply duct and an exhaust port installed on the cover plate, the air supply duct passing through the cover plate; and a blower installed inside the air supply duct; the blower is used to deliver external gas into the sealed cavity, and when the blower is working, if the air pressure in the sealed cavity reaches the opening threshold of the exhaust port, the exhaust port will automatically open to discharge external air.

7. The acid leaching apparatus according to claim 6, characterized in that: It also includes a heating element located at the air outlet of the blower.

8. The acid leaching apparatus according to claim 7, characterized in that: It also includes an anti-backflow element installed at the air outlet of the blower.

9. The acid leaching apparatus according to claim 8, characterized in that: It also includes a control module, which includes a liquid level sensor and a controller. The liquid level sensor is located at the drain port. The controller is electrically or communicatively connected to the liquid level sensor, the circulating pump, the multi-way valve, the blower, and the heating element.

10. The acid leaching apparatus according to claim 9, characterized in that: The heating element is an electric heating tube, and the anti-backflow element is a mechanical check valve.

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