A chemical waste liquid treatment device

Abstract

This utility model provides a chemical waste liquid treatment device, including a storage tank, a liquid storage container, a waste liquid pipe, and a three-way check valve. The top surface of the storage tank is provided with two parallel limiting grooves, each with a through hole at its center, and each through hole is connected to a pump suction needle by a thread. A through hole is provided on the right side of the storage tank, and one end of the waste liquid pipe extends through the through hole into the liquid storage container. The other end is divided into two branch pipes by the three-way check valve, and the two branch pipes are respectively connected to two pump suction needles. A peristaltic pump is installed on the pipe between the three-way check valve and the through hole.

Description

Technical Field

[0001] This invention relates to the field of waste liquid treatment technology, specifically to a chemical waste liquid treatment device. Background Technology

[0002] In chemical laboratories, when conducting density tests on reagent samples, the samples are typically pre-stored in a 20mL container. During the density test, about 10-15mL of sample is usually consumed, and the remaining liquid must be collected and discharged into a storage tank for waste disposal. However, the liquid in the container is often a strong acid such as nitric acid, hydrochloric acid, sulfuric acid, or hydrofluoric acid, or a mixture of several acids. During waste disposal, opening the container can easily release a large amount of acid mist, producing an irritating odor and posing a potential hazard to the respiratory tract and skin of operators.

[0003] Currently, there is a lack of suitable dedicated equipment for the safe treatment of chemical laboratory density testing waste liquids. Existing methods are generally ineffective in preventing acid mist escape and inadequate for the safe and sealed discharge of waste liquids. Therefore, from the perspectives of experimental safety and operational convenience, there is an urgent need to design a chemical experimental sample density testing waste liquid treatment device that meets the requirements of practical use. This device would isolate operators from the waste liquid, reduce acid mist release, ensure experimental safety, and meet laboratory waste liquid treatment requirements. Summary of the Invention

[0004] To overcome a series of defects in the existing technology, the purpose of this utility model is to provide a chemical waste liquid treatment device, including a storage tank 1, a liquid storage tank 3, a waste liquid pipe 4, and a three-way check valve 5. The top surface of the storage tank 1 is provided with two parallel limiting grooves 7, and each limiting groove 7 has a through hole 11 at its center. Each through hole 11 is connected to a pump suction needle 9 by a thread. The right side of the storage tank 1 has a through hole 8. One end of the waste liquid pipe 4 extends through the through hole 8 into the liquid storage tank 3, and the other end is divided into two branch pipes by the three-way check valve 5. The two branch pipes are respectively connected to the two pump suction needles 9. A peristaltic pump 2 is installed on the waste liquid pipe 4 between the three-way check valve 5 and the through hole 8.

[0005] Furthermore, a touch screen operation area 6 is provided on the rear side of the storage box 1, and the touch screen operation area 6 is electrically connected to the peristaltic pump 2.

[0006] Furthermore, the volume of the liquid storage tank 3 is 10L to 20L, and it is made of corrosion-resistant plastic or polytetrafluoroethylene material.

[0007] Furthermore, the waste liquid pipe 4 is made of FEP material with an inner diameter of 0.1cm to 0.5cm; the three-way check valve 5 is made of polytetrafluoroethylene.

[0008] Furthermore, the pump needle 9 has multiple fine holes 10 distributed throughout its upper, middle and lower parts; and four pulleys 12 are installed at the bottom of the storage tank 1.

[0009] Furthermore, a protective cap 13 is installed on the outside of the pump suction needle 9. The diameter of the protective cap 13 is larger than the diameter of the limiting groove 7, and the height is larger than the height of the pump suction needle 9.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1) The device is highly adaptable and can process different batches of chemical waste liquid according to actual needs, meeting the diverse operational requirements of the laboratory.

[0012] 2) No need to open the lid during the waste liquid treatment process, avoiding the escape of acid mist and effectively ensuring the safety of operators;

[0013] 3) The entire device is made of corrosion-resistant materials, has good sealing properties, reduces the need for frequent component replacement, and extends service life;

[0014] 4) The device has a compact and reasonable structure and is easy to operate, enabling efficient and reliable waste liquid treatment while ensuring safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a chemical waste liquid treatment device disclosed in this utility model.

[0016] In the diagram: 1, storage tank; 2, peristaltic pump; 3, liquid storage tank; 4, waste liquid pipe; 5, three-way check valve; 6, touch screen operation area; 7, limit groove; 8, through hole; 9, pump suction needle; 10, fine hole; 11, through hole; 12, pulley; 13, protective cap. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some embodiments of this utility model, not all embodiments.

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] The embodiments and directional terms described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In a broad embodiment of this application, a chemical waste liquid treatment device includes a storage tank 1, a liquid storage container 3, a waste liquid pipe 4, and a three-way check valve 5. The top surface of the storage tank 1 is provided with two parallel limiting grooves 7, and each limiting groove 7 has a through hole 11 at its center. Each through hole 11 is connected to a pump suction needle 9 by a thread. The right side of the storage tank 1 has a through hole 8. One end of the waste liquid pipe 4 extends through the through hole 8 into the liquid storage container 3, and the other end is divided into two branch pipes by the three-way check valve 5. The two branch pipes are respectively connected to the two pump suction needles 9. A peristaltic pump 2 is installed on the waste liquid pipe 4 between the three-way check valve 5 and the through hole 8.

[0021] Furthermore, a touch screen operation area 6 is provided on the rear side of the storage box 1, and the touch screen operation area 6 is electrically connected to the peristaltic pump 2.

[0022] Furthermore, the volume of the liquid storage tank 3 is 10L to 20L, and it is made of corrosion-resistant plastic or polytetrafluoroethylene material.

[0023] Furthermore, the waste liquid pipe 4 is made of FEP material with an inner diameter of 0.1cm to 0.5cm; the three-way check valve 5 is made of polytetrafluoroethylene.

[0024] Furthermore, the pump needle 9 has multiple fine holes 10 distributed throughout its upper, middle and lower parts; and four pulleys 12 are installed at the bottom of the storage tank 1.

[0025] Furthermore, a protective cap 13 is installed on the outside of the pump suction needle 9. The diameter of the protective cap 13 is larger than the diameter of the limiting groove 7, and the height is larger than the height of the pump suction needle 9.

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, and the present invention will be further described in detail.

[0027] This chemical waste treatment device was used to treat a batch of 200 bottles of density test waste liquid, each bottle containing approximately 10 mL. The waste liquid media included nitric acid, hydrochloric acid, sulfuric acid, and hydrofluoric acid.

[0028] like Figure 1 As shown, a chemical waste liquid treatment device includes a storage tank 1, a peristaltic pump 2, a storage tank 3, a waste liquid pipe 4, a three-way check valve 5, a touch screen operation area 6, a limiting groove 7, a through hole 8, and also includes a pump suction needle 9, with fine holes 10 distributed throughout the upper, middle and lower parts of the pump suction needle 9.

[0029] The limiting groove 7 is recessed on the surface of the storage tank 1. A through hole 11 is opened at the center of the limiting groove 7. A thread is provided at the position of the through hole 11. The pump suction needle 9 is fixed in the through hole 11 by the thread. The lower end of the pump suction needle 9 is connected to the waste liquid pipe 4.

[0030] The storage tank 1 is equipped with four casters 12 at the bottom. The chemical waste liquid treatment device is generally installed on the experimental table. The casters 12 facilitate the device to move within a small range on the table. The casters are 5cm high, which can raise the bottom of the storage tank 1 a certain distance above the experimental table, so that the waste liquid pipe 4 can be extended into the storage tank 3 through the through hole 8.

[0031] The pump suction needle 9 is also equipped with a protective cap 13. The diameter of the protective cap 13 is larger than the diameter of the limiting groove 7, and the height of the protective cap 13 is larger than the height of the pump suction needle 9, for dust prevention.

[0032] Waste liquid pipe 4 is made of FEP material, which is resistant to acid and alkali corrosion. The pipe diameter is 0.1cm to 0.5cm, and it can allow liquid flow of 10mL / min to 50mL / min.

[0033] The three-way check valve 5 is made of polytetrafluoroethylene, which is resistant to acid and alkali corrosion and serves as a connection and support.

[0034] The peristaltic pump 2 and the touch screen operation area 6 are connected by a circuit. The touch screen operation area 6 can control the start and stop of the peristaltic pump 2, and can select high speed, medium speed and low speed operation by pressing the button according to the amount of waste liquid to be processed.

[0035] Among them, the storage tank 3 is a large tank with a volume of 10L to 20L. The material should be corrosion-resistant plastic or polytetrafluoroethylene. The waste liquid tank can be placed on the ground.

[0036] The pre-filled bottle includes a bottle body made of high-density polyethylene, a screw cap, and a gasket. The screw cap is hollow with threads on the edges, allowing it to be screwed tightly onto the bottle body. The gasket is made entirely of rubber with a polytetrafluoroethylene (PTFE) coating on the bottom. The gasket is installed inside the screw cap, with the PTFE coating layer on the inside, in contact with the liquid inside the bottle.

[0037] When in use, remove the protective cap 13, invert the pre-reserved bottle and insert it into the pump suction needle 9, connecting it with the limiting groove 7. Start the peristaltic pump 2 through the touch screen operation area 6, and the waste liquid in the pre-reserved bottle is sucked into the waste liquid pipe 4. When the liquid is full, it enters the storage tank 3.

[0038] The device can complete the batch waste liquid treatment operation in 30 minutes. There is no acid mist escaping during the treatment process. It is fast and safe and can achieve the above objectives.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chemical waste liquid treatment device, comprising a storage tank (1), a liquid storage container (3), a waste liquid pipe (4), and a three-way check valve (5), characterized in that, The top surface of the storage tank (1) is provided with two parallel limiting grooves (7), and each limiting groove (7) has a through hole (11) at its center. Each through hole (11) is connected to a pump suction needle (9) by a thread. The right side of the storage tank (1) has an outlet hole (8). One end of the waste liquid pipe (4) passes through the outlet hole (8) and extends into the storage tank (3). The other end is divided into two branch pipes by a three-way check valve (5). The two branch pipes are respectively connected to the two pump suction needles (9). A peristaltic pump (2) is installed on the pipeline between the three-way check valve (5) and the outlet hole (8) of the waste liquid pipe (4).

2. The chemical waste liquid treatment device according to claim 1, characterized in that, The storage tank (1) is provided with a touch screen operation area (6) on the rear side, and the touch screen operation area (6) is electrically connected to the peristaltic pump (2).

3. The chemical waste liquid treatment device according to claim 1, characterized in that, The volume of the liquid storage tank (3) is 10L to 20L, and it is made of corrosion-resistant plastic or polytetrafluoroethylene material.

4. The chemical waste liquid treatment device according to claim 1, characterized in that, The waste liquid pipe (4) is made of FEP material and has an inner diameter of 0.1cm to 0.5cm; the three-way check valve (5) is made of polytetrafluoroethylene.

5. A chemical waste liquid treatment device according to any one of claims 1-4, characterized in that, The pump needle (9) has multiple fine holes (10) distributed throughout its upper, middle and lower parts; the storage tank (1) is equipped with four pulleys (12) at its bottom.

6. The chemical waste liquid treatment device according to claim 5, characterized in that, The pump suction needle (9) is equipped with a protective cap (13) on the outside. The diameter of the protective cap (13) is larger than the diameter of the limiting groove (7), and the height is larger than the height of the pump suction needle (9).

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