Waste liquid collecting equipment for analytical chemistry laboratory

Abstract

The utility model relates to waste liquid collecting equipment for an analytical chemistry laboratory, and belongs to the technical field of waste liquid collection. The collecting container is arranged on the leakage-proof surface of the leakage-proof disc and comprises a shell and a liquid inlet assembly arranged at the upper end of the shell; the liquid receiving part is communicated with the liquid inlet assembly; and the negative pressure suction assembly is communicated with the shell. Compared with the prior art, the waste liquid collecting device has the advantages that the shell of the collecting container is communicated with the vacuum pump, and gas in the shell is pumped outwards through the vacuum pump, so that negative pressure is formed in the shell, the flow speed of waste liquid in the liquid receiving part is increased, and the waste liquid poured into the liquid receiving part can quickly enter the collecting container; the waste liquid collection time is shortened, the waste liquid collection efficiency is improved, and the physical strength and energy of operators are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste liquid collection, and particularly relates to a waste liquid collection device for an analytical chemistry laboratory. Background Art

[0002] Chemical experiments usually generate some harmful or even toxic waste liquids. If these waste liquids are directly discharged into the external environment, they will cause relatively serious pollution to the external environment. Therefore, corresponding collection devices are usually set up to collect the waste liquids generated by the experiments to avoid direct discharge of the waste liquids into the external environment;

[0003] In order to prevent dust or other sundries from falling into the collection device, a waste liquid collection device for an analytical chemistry laboratory disclosed in the Chinese utility model patent with the publication number CN215429105U is provided with a lid threadedly connected above the liquid inlet funnel through an internal thread one and an external thread one, and a bucket lid threadedly connected above the barrel through an external thread three and an internal thread three. When not in use, the lid and the bucket lid can be screwed on, so as to prevent dust or other sundries from falling into the device. However, in the process of collecting waste liquid by the collection device, since the waste liquid is usually poured into the funnel and flows into the collection bucket, the flow rate of the waste liquid in the funnel is usually slow. Therefore, the operator needs to slowly pour the waste liquid into the funnel to avoid overflow of the waste liquid from the funnel to ensure the safe progress of the whole process. If the amount of waste liquid is large, it is necessary to repeatedly pour the waste liquid slowly, which not only requires a lot of time, but also requires maintaining a posture and improving concentration when pouring the waste liquid, consuming physical strength and energy. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a waste liquid collection device for an analytical chemistry laboratory to overcome at least one of the defects existing in the above-mentioned prior art. By connecting the housing of the collection container with a vacuum pump, the gas inside the housing is pumped outwards by the vacuum pump to form a negative pressure inside the housing, thereby increasing the flow rate of the waste liquid in the liquid receiving part, so that the waste liquid poured into the liquid receiving part can quickly enter the interior of the collection container, shortening the waste liquid collection time, improving the waste liquid collection efficiency, and saving the physical strength and energy of the operator.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A waste liquid collection device for an analytical chemistry laboratory, comprising:

[0007] A leak-proof tray;

[0008] A collection container arranged on the leak-proof surface of the leak-proof tray, comprising a housing and a liquid inlet assembly arranged at the upper end of the housing;

[0009] A liquid receiving part communicated with the liquid inlet assembly;

[0010] The negative pressure suction component connected to the shell is used to form negative pressure inside the collection container, accelerate the flow rate of the waste liquid in the liquid receiving part, and improve the waste liquid collection efficiency.

[0011] Furthermore, the liquid inlet assembly comprises:

[0012] An inlet pipe, a first end of which penetrates the upper surface of the shell and is connected to the liquid receiving portion, and a plurality of liquid discharge ports are arranged at intervals on the wall of the inlet pipe near the second end;

[0013] The sealing part arranged in the input pipe comprises:

[0014] A bottom plate connected to the inner wall of the input pipe, which is located in the pipe section near the second end of the discharge port;

[0015] A movable column disposed on the bottom plate at a side facing the liquid discharge port;

[0016] The spring and the piston are sequentially sleeved on the movable column. When the negative pressure suction component is not working, the piston is located in the pipe section of the discharge port away from the second end portion under the action of the spring, blocking the discharge port to prevent the gas generated by the waste liquid in the collection container from escaping. When the negative pressure suction component is working, the spring is compressed and the piston is located in the pipe section of the discharge port near the second end portion, so that the discharge port is connected to the liquid receiving portion.

[0017] Furthermore, the liquid receiving portion includes a funnel and a connecting pipe connected to the funnel, and one end of the connecting pipe away from the funnel is connected to the liquid inlet assembly;

[0018] The drainage end surface of the funnel is provided with guide plates at intervals, and each guide plate is provided with a lap groove at the end near the connection between the funnel and the connecting pipe; a cover body is clamped in the lap groove; and a plurality of filter holes are opened inside the cover body.

[0019] Furthermore, the negative pressure suction component includes a vacuum pump connected to the shell.

[0020] Furthermore, a gas filter is provided at the exhaust end of the vacuum pump; the gas filter is a double-layer HEPA+double nano-mineral crystal filter.

[0021] Furthermore, the waste liquid collection device is also provided with a pressure sensor connected to the shell.

[0022] Furthermore, the housing satisfies at least one of the following conditions:

[0023] ① The housing is also provided with a transfer assembly; the transfer assembly includes two movable plates provided on the housing; a handle is rotatably connected between the two movable plates;

[0024] ② A plurality of rollers are arranged at the bottom of the shell.

[0025] Furthermore, a position avoiding groove for accommodating the roller is provided on the leakage preventing surface of the leakage preventing tray.

[0026] Furthermore, positioning columns are provided on the leakage preventing surface of the leakage preventing tray, and slots for accommodating the positioning columns are formed at the lower end of the housing.

[0027] Furthermore, the waste liquid collecting device is further provided with a capacity increasing component. The capacity increasing component includes two side plates symmetrically arranged on the outer surface of one side of the housing, and a liquid storage mounting box inserted inside the two side plates. A second connection interface is arranged on one side of the liquid storage mounting box, and a first connection interface is arranged on the outer surface of the collecting container; the first connection interface and the second connection interface are connected through a pipeline.

[0028] Compared with the prior art, in the utility model, the housing of the collecting container is communicated with a vacuum pump, and the gas inside the housing is pumped outwards through the vacuum pump, so that negative pressure is formed inside the housing, thereby increasing the flow rate of the waste liquid in the liquid receiving part, enabling the waste liquid poured into the liquid receiving part to quickly enter the inside of the collecting container, shortening the waste liquid collection time, improving the waste liquid collection efficiency, and saving the physical strength and energy of the operator. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the waste liquid collecting device for an analytical chemistry laboratory in the embodiment;

[0030] Figure 2 It is a schematic diagram of the liquid inlet component in the embodiment;

[0031] Figure 3 It is a schematic diagram of the collecting container in the embodiment;

[0032] Figure 4 It is a schematic diagram of the leakage preventing tray in the embodiment;

[0033] Figure 5 It is a schematic diagram of the liquid receiving part in the embodiment;

[0034] The reference numerals in the figure indicate: 1. Leakage preventing tray; 2. Collecting container; 21. Movable plate; 22. Handle; 23. Input pipe; 24. Drainage port; 25. Bottom plate; 26. Movable column; 27. Piston; 28. Spring; 29. Limit seat; 3. Connecting pipe; 4. Liquid receiving part; 41. Funnel; 42. Deflector; 43. Lapping groove; 44. Cover body; 45. Filter hole; 5. Vacuum pump; 6. Negative pressure suction port; 7. Gas filter; 8. Pressure sensor; 9. Capacity increasing component; 91. Side plate; 92. Liquid storage mounting box; 93. Positioning block; 94. First connection interface; 95. Second connection interface; 10. Roller; 11. Slot; 12. Positioning column; 13. Position avoiding groove. Detailed Embodiments

[0035] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present utility model is not limited to the following embodiments.

[0036] In the technical solution of the present utility model, features such as component models, material names, connection structures, control methods, etc. that are not clearly described are regarded as common technical features disclosed in the prior art.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined. In addition, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a bolt connection or a welded connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] A waste liquid collection device for an analytical chemistry laboratory, comprising: a leak-proof tray 1; a collection container 2 arranged on the leak-proof surface of the leak-proof tray 1, including a housing and a liquid inlet assembly arranged at the upper end of the housing; a liquid receiving part 4 communicated with the liquid inlet assembly; and a negative pressure suction assembly communicated with the housing, used to form a negative pressure inside the collection container to accelerate the flow rate of the waste liquid in the liquid receiving part 4 and improve the waste liquid collection efficiency.

[0040] In an embodiment of the present utility model, the liquid inlet assembly includes: an input pipe 23, the first end of which penetrates the upper surface of the housing and is communicated with the liquid receiving part 4, and a plurality of liquid discharge ports 24 are arranged at intervals on the pipe wall of the input pipe 23 near the second end.

[0041] The sealing part disposed inside the input pipe 23 includes: a bottom plate 25 connected to the inner wall of the input pipe 23, which is located in the pipe section near the end of the second end of the liquid discharge port 24; a movable column 26 disposed on the side of the bottom plate 25 facing the liquid discharge port 24; a spring 28 and a piston 27 sleeved on the movable column 26 in sequence. When the negative pressure suction assembly is not working, the piston 27 is located in the pipe section of the liquid discharge port 24 away from the end of the second end under the action of the spring 28, blocking the liquid discharge port 24 to prevent the gas generated by the waste liquid in the collection container 2 from escaping. When the negative pressure suction assembly is working, the spring 28 is compressed, and the piston 27 is located in the pipe section near the end of the second end of the liquid discharge port 24, so that the liquid discharge port 24 is communicated with the liquid receiving part 4.

[0042] In an embodiment of the present invention, the liquid receiving part 4 includes a funnel 41 and a connecting pipe 3 communicated with the funnel 41. One end of the connecting pipe 3 away from the funnel 41 is communicated with the liquid inlet assembly; the end face of the drainage end of the funnel 41 is provided with diversion plates 42 at intervals, and a lapping groove 43 is provided at the end of each diversion plate 42 near the connection part of the funnel 41 and the connecting pipe 3; a cover body 44 is clamped in the lapping groove 43; a plurality of filter holes 45 are opened inside the cover body 44.

[0043] In an embodiment of the present invention, the negative pressure suction assembly includes a vacuum pump 5 communicated with the housing.

[0044] In an embodiment of the present invention, a gas filter 7 is provided at the exhaust end of the vacuum pump 5; the gas filter 7 is a double-layer HEPA + double nano-mineral crystal filter.

[0045] In an embodiment of the present invention, the waste liquid collection device is further provided with a pressure sensor 8 communicated with the housing.

[0046] In an embodiment of the present invention, the housing satisfies at least one of the following conditions:

[0047] ① A transfer assembly is further provided on the housing; the transfer assembly includes two movable plates 21 provided on the housing; a handle 22 is rotatably connected between the two movable plates 21;

[0048] ② A plurality of rollers 10 are provided at the bottom of the housing.

[0049] In an embodiment of the present invention, an avoidance groove 13 for accommodating the rollers 10 is provided on the anti-leakage surface of the anti-leakage tray 1. A positioning column 12 is further provided on the anti-leakage surface of the anti-leakage tray 1, and a slot 11 for accommodating the positioning column 12 is opened at the lower end of the housing.

[0050] In an embodiment of the present utility model, the waste liquid collection device is further provided with a volume increasing component 9. The volume increasing component 9 includes two side plates 91 symmetrically arranged on the outer surface of one side of the housing, and a liquid storage mounting box 92 inserted inside the two side plates 91. A second connection interface 95 is arranged on one side of the liquid storage mounting box 92, and a first connection interface 94 is arranged on the outer surface of the collection container 2. The first connection interface 94 and the second connection interface 95 are connected through a pipeline.

[0051] Embodiment

[0052] Please refer to Figures 1-5 , this embodiment provides a waste liquid collection device for an analytical chemistry laboratory, including a leak-proof tray 1 and a collection container 2 located inside the leak-proof tray 1. The leak-proof tray 1 is used to collect the waste liquid overflowing from the collection container 2 to prevent leakage and pollution. An input pipe 23 is fixedly connected inside the collection container 2, and one end of the input pipe 23 is connected to a connecting pipe 3. The other end of the connecting pipe 3 is fixedly connected to a liquid receiving part 4. A negative pressure suction port 6 is opened at the upper end of the collection container 2. A vacuum pump 5 is fixedly connected to the upper end of the collection container 2, and the input end of the vacuum pump 5 is connected to the negative pressure suction port 6. The output end of the vacuum pump 5 is connected to a gas filter 7, and the gas filter 7 is clamped at the upper end of the collection container 2. A pressure sensor 8 is fixedly connected to the upper end of the collection container 2, and the detection end of the pressure sensor 8 extends into the collection container 2.

[0053] The liquid receiving part 4 includes a funnel 41 fixedly connected to one end of the connecting pipe 3. A flow guiding plate 42 is fixedly connected to the inner wall of the funnel 41. A lapping groove 43 is opened at one end of the flow guiding plate 42, and a cover body 44 is clamped in the lapping groove 43. A plurality of filter holes 45 are opened inside the cover body 44.

[0054] By providing the above-mentioned scheme, when the waste liquid is poured into the funnel 41, the flow guiding plate 42 can guide the waste liquid, reduce the splashing of the waste liquid. The waste liquid flows from the flow guiding plate 42 to the cover body 44 and enters the connecting pipe 3 through the filter holes 45 in the cover body 44, enters the input pipe 23 from the connecting pipe 3, and enters the collection container 2 from the input pipe 23. While the waste liquid is flowing, the vacuum pump 5 is controlled to work. The vacuum pump 5 works to pump the gas inside the collection container 2 outwards, so that a negative pressure is formed inside the collection container 2, thereby increasing the flow rate of the waste liquid in the funnel 41 and the connecting pipe 3, so that the waste liquid poured into the funnel 41 can quickly enter the inside of the collection container 2, shortening the waste liquid collection time, improving the waste liquid collection efficiency, saving the physical strength and energy of the operator. The gas inside the collection container 2 is pumped out by the vacuum pump 5 and enters the gas filter 7, and is discharged after being purified by the gas filter 7. The gas filter 7 is a double-layer HEPA + double nano-mineral filter, which can actively adsorb and catalytically decompose toxic and harmful gases. It belongs to the mature existing technology and is also applied in the existing laboratory waste liquid safety collection station, so it will not be elaborated here.

[0055] Please refer to Figure 2 In this embodiment, a drain port 24 is formed on the outer surface of one end of the input pipe 23 inserted into the collection container 2, and a bottom plate 25 is fixedly connected to the inner wall of one end of the input pipe 23 inserted into the collection container 2. An activity column 26 is movably inserted into the bottom plate 25, and a limit seat 29 is fixedly connected to the lower end of the activity column 26. A piston 27 is fixedly connected to the upper end of the activity column 26, and the outer surface of the piston 27 is attached to the inner wall of the input pipe 23. A spring 28 is sleeved on the outer surface of the activity column 26, and both ends of the spring 28 are respectively connected to the piston 27 and the bottom plate 25.

[0056] By setting the above scheme, when the vacuum pump 5 is not working, the force generated by the spring 28 can push the piston 27 upward. By default, the piston 27 is located above the drain port 24. When the vacuum pump 5 works to generate negative pressure inside the collection container 2, at this time, the piston 27 is affected by the negative pressure and moves downward in the input pipe 23 to the drain port 24, and the waste liquid in the input pipe 23 can flow out from the drain port 24 and enter the collection container 2. Such a setting is that when the waste liquid is not collected, the piston 27 can seal the input pipe 23 to prevent the gas generated by the waste liquid in the collection container 2 from entering the funnel 41 through the input pipe 23 and being discharged from the funnel 41 to pollute the room.

[0057] Please refer to Figure 1 、 Figure 3 and Figure 4 In this embodiment, a plurality of rollers 10 are provided at the lower end of the collection container 2. An avoidance groove 13 for accommodating the rollers 10 is formed inside the collection container 2. Two activity plates 21 are movably inserted into the collection container 2, and a handle 22 is rotatably connected between the two activity plates 21.

[0058] By setting the above scheme, after the collection container 2 is taken out of the leak-proof tray 1, the collection container 2 can be moved through the rollers 10. At the same time, it is convenient to pull the collection container 2 through the handle 22 to control the moving direction of the collection container 2, which is more convenient for moving the collection container 2 with a large amount of waste liquid stored inside. At the same time, the collection container 2 can also be lifted by the handle 22 for carrying and transportation.

[0059] A positioning column 12 is fixedly connected to the inner wall of the leak-proof tray 1, and a slot 11 for accommodating the positioning column 12 is formed at the lower end of the collection container 2.

[0060] Please refer to Figure 1 and Figure 3, in this embodiment, a volume increasing component 9 is provided on the outer surface of the collection container 2, and the volume increasing component 9 includes two side plates 91 symmetrically and fixedly connected to the outer surface of one side of the collection container 2, a liquid storage mounting box 92 inserted inside the two side plates 91, and a positioning block 93 passing through the side plates 91 and inserted into the liquid storage mounting box 92. A second connection interface 95 is provided on one side of the liquid storage mounting box 92, and a plurality of first connection interfaces 94 are provided on the outer surface of the collection container 2.

[0061] By setting the above solution, when the collection container 2 cannot meet the waste liquid collection requirement, the liquid storage mounting box 92 can be added to the outer surface of the collection container 2. The loading method is to insert the liquid storage mounting box 92 between two adjacent side plates 91, then insert the positioning block 93 into the side plates 91 and the inside of the liquid storage mounting box 92 to position the liquid storage mounting box 92, and finally connect the first connection interface 94 and the second connection interface 95 through a pipeline. In this way, the liquid in the collection container 2 can enter the inside of the liquid storage mounting box 92 through the pipeline, increasing the storage capacity of the collection container 2 for waste liquid.

[0062] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0063] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A waste liquid collection device for analytical chemistry laboratories, characterized in that: include: Leakage-proof plate (1); A collecting container (2) arranged on the leak-proof surface of the leak-proof plate (1), comprising a shell and a liquid inlet assembly arranged on the upper end of the shell; A liquid receiving portion (4) connected to the liquid inlet assembly; The negative pressure suction component connected to the shell is used to form a negative pressure inside the collection container, thereby accelerating the flow rate of the waste liquid in the liquid receiving portion (4) and improving the waste liquid collection efficiency.

2. A waste liquid collection device for analytical chemistry laboratories according to claim 1, characterized in that: The liquid inlet assembly comprises: An input pipe (23), a first end of which penetrates the upper surface of the shell and is connected to the liquid receiving portion (4), and a plurality of liquid discharge ports (24) are arranged at intervals on the wall of the input pipe (23) near the second end; The sealing part arranged in the input pipe (23) comprises: A bottom plate (25) connected to the inner wall of the input pipe (23), which is located in the pipe section near the second end of the discharge port (24); A movable column (26) disposed on a side of the bottom plate (25) facing the liquid discharge port (24); A spring (28) and a piston (27) are sequentially sleeved on the movable column (26). When the negative pressure suction component is not working, the piston (27) is located in the pipe section of the discharge port (24) away from the second end portion under the action of the spring (28), blocking the discharge port (24) to prevent the gas generated by the waste liquid in the collection container (2) from escaping. When the negative pressure suction component is working, the spring (28) is compressed and the piston (27) is located in the pipe section of the discharge port (24) near the second end portion, so that the discharge port (24) is connected to the liquid receiving portion (4).

3. The waste liquid collection equipment for analytical chemistry laboratories according to claim 1, characterized in that: The liquid receiving portion (4) comprises a funnel (41) and a connecting pipe (3) connected to the funnel (41), wherein one end of the connecting pipe (3) facing away from the funnel (41) is connected to the liquid inlet assembly; The drainage end surface of the funnel (41) is provided with guide plates (42) at intervals, and each guide plate (42) is provided with a lap groove (43) at the end near the funnel (41) and the connecting pipe (3); a cover body (44) is clamped in the lap groove (43); and a plurality of filter holes (45) are provided inside the cover body (44).

4. The waste liquid collection equipment for analytical chemistry laboratories according to claim 1, characterized in that: The negative pressure suction component comprises a vacuum pump (5) connected to the housing.

5. The waste liquid collection equipment for analytical chemistry laboratories according to claim 4, characterized in that: The exhaust end of the vacuum pump (5) is provided with a gas filter (7); the gas filter (7) is a double-layer HEPA+double nano-mineral crystal filter.

6. The waste liquid collection equipment for analytical chemistry laboratories according to claim 1, characterized in that: The waste liquid collection device is also provided with a pressure sensor (8) connected to the shell.

7. The waste liquid collection equipment for analytical chemistry laboratories according to claim 1, characterized in that: The housing satisfies at least one of the following conditions: ① A transfer assembly is also provided on the shell; the transfer assembly comprises two movable plates (21) provided on the shell; a handle (22) is rotatably connected between the two movable plates (21); ② A plurality of rollers (10) are arranged at the bottom of the shell.

8. The waste liquid collection equipment for analytical chemistry laboratories according to claim 7, characterized in that: The leak-proof surface of the leak-proof disc (1) is provided with an avoidance groove (13) for accommodating the roller (10).

9. The waste liquid collection equipment for analytical chemistry laboratories according to claim 1, characterized in that: A positioning column (12) is also provided on the leak-proof surface of the leak-proof disc (1), and a slot (11) for accommodating the positioning column (12) is provided at the lower end of the shell.

10. The waste liquid collection equipment for analytical chemistry laboratories according to claim 1, characterized in that: The waste liquid collection device is also provided with a capacity expansion component (9), the capacity expansion component (9) comprising two side panels (91) symmetrically arranged on the outer surface of one side of the shell, and a liquid storage mounting box (92) plugged into the two side panels (91); a second connection interface (95) is arranged on one side of the liquid storage mounting box (92), and a first connection interface (94) is arranged on the outer surface of the collection container (2); the first connection interface (94) and the second connection interface (95) are connected through a pipeline.

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