Cleaning device for dioxin detection laboratory ware

Abstract

The utility model discloses a dioxin detection laboratory utensil cleaning device which comprises a box body, a first cavity, a second cavity, a connecting pipe, a water outlet pipeline and an air blower are arranged in the box body, an alkaline organic solvent is stored in the first cavity, the second cavity is used for placing a utensil to be cleaned, and the first cavity is communicated with the second cavity through the connecting pipe; a water outlet is formed in the bottom end of the second cavity and connected with a water outlet pipeline, an air inlet pipe is arranged on the side wall of the box body, one end of the air inlet pipe is communicated with an air blower, and the other end of the air inlet pipe is communicated with the second cavity; an ultrasonic generator is arranged in the second cavity, and a dioxin photolysis assembly is arranged at the top of the second cavity, so that the vessel is efficiently cleaned, the vessel is free of dioxin residual pollution, and the accuracy of a detection analysis result is improved; and the workload of experimenters in a dioxin laboratory and the opportunity of contacting dioxin pollutants are reduced, and the working efficiency and health of the experimenters are guaranteed.

Description

Technical Field

[0001] This utility model relates to cleaning equipment for dioxin testing laboratories, and in particular to a cleaning device for dioxin testing laboratory utensils. Background Technology

[0002] Dioxins are byproducts of combustion and various industrial processes, and are highly toxic substances; even low concentrations can be lethal to animals. Dioxin detection and analysis involves ultra-trace, multi-component organic matter analysis, requiring extremely strict background conditions in the laboratory. Laboratory personnel must ensure that workbenches, floors, instruments, and glassware are always kept clean, and all glassware used in daily analyses must be washed on the same day and not left overnight. Because dioxin detection and analysis involves complex experimental procedures and a large number of glassware items, laboratory personnel also bear the heavy responsibility of cleaning glassware contaminated with residual dioxins after sample processing.

[0003] Most existing dioxin laboratory cleaning equipment only has ultrasonic cleaning capabilities. However, it still requires laboratory personnel to remove the cleaned glassware, rinse it with water, and then place it in a blower dryer for drying. The lack of integrated washing and drying equipment means that even after ultrasonic cleaning, dioxins may still remain on the glassware. During the drying process, dioxins can easily accumulate, causing the glassware to fail to meet the cleaning standards. As a result, during laboratory quality control, blank samples may be detected, and the background values ​​may be too high, affecting the accuracy of the test results. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem of inefficient cleaning of dioxin testing laboratory equipment, and to propose a dioxin testing laboratory equipment cleaning device.

[0005] The technical problem of this utility model is solved by the following technical solution:

[0006] A dioxin detection laboratory glassware cleaning device includes a housing. The housing contains a first chamber, a second chamber, a connecting pipe, a water outlet pipe, and a blower. The first chamber stores an alkaline organic solvent. The second chamber is used to hold the glassware to be cleaned. The first chamber is connected to the second chamber via the connecting pipe. A water outlet is located at the bottom of the second chamber and is connected to the water outlet pipe. An air inlet pipe is located on the side wall of the housing. One end of the air inlet pipe is connected to the blower, and the other end is connected to the second chamber. An ultrasonic generator is located inside the second chamber, and a dioxin photodecomposition component is located at the top of the second chamber.

[0007] In some embodiments, the following technical features are also included:

[0008] The second cavity is provided with at least two layers of filter frames, and the inner wall of the second cavity is provided with a lifting mechanism that is connected to the filter frames to change the height of the frames.

[0009] In some embodiments, the lifting mechanism includes a support frame, a guide rail, a hydraulic lifting rod, and a first motor. The support frame is used to support the filter screen frame and is fixedly connected to the guide rail. The top end of the hydraulic lifting rod is connected to the bottom end of the filter screen frame, and the hydraulic lifting rod is connected to the first motor.

[0010] In some embodiments, the filter frame of the second cavity is provided with a vessel inverting mechanism, which includes a rotating shaft, a main rod, and a second motor. The bottom of the main rod is embedded in the rotating shaft, and the diameter of the main rod is smaller than the diameter of the opening of the vessel. The second motor is used to drive the rotating shaft to rotate so that the main rod is in an upright state.

[0011] In some embodiments, a movable triangular fork is fixedly connected to the main rod.

[0012] In some embodiments, a reflux pump is also provided inside the housing, and a reflux pipe is provided between the first cavity and the second cavity. The reflux pump is used to pump the alkaline organic solvent in the second cavity into the first cavity through the reflux pipe.

[0013] In some embodiments, the dioxin photodecomposition assembly includes an ultraviolet lamp and a silicone strip, a sealing cover is provided on the top of the second cavity, the silicone strip is disposed on the edge of the sealing cover, and the ultraviolet lamp is embedded in the middle of the silicone strip.

[0014] In some embodiments, a first valve is provided at the inlet of the connecting pipe, a second valve is provided at the outlet of the water pipe, and a third valve is provided at the inlet of the air inlet pipe.

[0015] In some embodiments, the alkaline organic solvent is a sodium hydroxide-ethanol organic alkaline solution.

[0016] In some embodiments, an activated carbon filter is provided inside the water outlet pipe.

[0017] The beneficial effects of this utility model compared with the prior art include:

[0018] This utility model proposes a dioxin detection laboratory glassware cleaning device. Its features include a first chamber storing an alkaline organic solvent, the first chamber being connected to a second chamber via a connecting pipe, one end of an air inlet pipe connected to a blower, the other end of the air inlet pipe connected to the second chamber, an ultrasonic generator installed in the second chamber, and a dioxin photodecomposition component installed at the top of the second chamber. This device integrates cleaning, drying, and residual dioxin decomposition functions, thus efficiently cleaning glassware in dioxin detection laboratories, ensuring no dioxin residue contamination, and improving the accuracy of detection and analysis results. Furthermore, it reduces the workload of laboratory personnel and their exposure to dioxin contaminants, ensuring their work efficiency and health.

[0019] Other beneficial effects of the embodiments of this utility model will be further described below. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a dioxin detection laboratory glassware cleaning device according to an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the vessel inverting mechanism in an embodiment of the present invention;

[0022] Figure 3a and Figure 3b This is a schematic diagram of a vessel lying horizontally before cleaning and upside down after cleaning, according to an embodiment of this utility model.

[0023] Figure 4a and Figure 4b This is a schematic diagram of another type of vessel in this utility model embodiment, lying horizontally before cleaning and upside down after cleaning;

[0024] in, Figure 1 The correspondence between the markings and the part names is as follows:

[0025] 1. Housing; 2. Liquid storage tank; 3. Control panel; 4. Control system; 5. Return water pump; 6. Hydraulic lifting rod; 7. Blower; 8. Ultrasonic generator; 9. Rotating shaft; 10. Water outlet; 11. Movable triangular fork; 12. Filter screen frame; 13. Guide rail; 14. Air inlet; 15. Ultraviolet lamp; 16. Water inlet; 17. Main rod. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0027] It should be noted that the directional terms such as left, right, up, down, top, and bottom used in this embodiment are only relative concepts or are based on the normal use of the product, and should not be considered as restrictive.

[0028] For dioxin laboratories, this utility model provides a highly efficient integrated cleaning device suitable for dioxin detection laboratories, which combines steps such as cleaning, drying, and photodecomposition of residual dioxins to treat dioxin-contaminated containers generated daily in laboratories in an integrated manner.

[0029] This utility model provides a dioxin detection laboratory glassware cleaning device, such as... Figure 1 As shown, the system includes a rectangular stainless steel box 1, which is placed horizontally on the ground. The internal structure of box 1 is divided into left and right cavities and upper and lower cavities. To ensure the sealing of the cleaning cavities, the upper cavity has a top-and-bottom opening design, while the lower cavity has a left-and-right opening design for easy placement of equipment such as motors and blowers. The upper cavity is further divided into a first cavity and a second cavity. The first cavity is connected to the second cavity via a connecting pipe. The first cavity serves as a liquid storage chamber, containing a liquid storage tank 2, which stores alkaline organic solvents. An operation control panel 3 is mounted on the front of the first cavity for setting operating procedures including cleaning, drying, and decomposition of residual dioxins. The second cavity integrates cleaning, drying, and decomposition functions and can hold containers to be cleaned. The lower chamber houses the motor, control system 4, return water pump 5, blower 7, and other equipment. The water inlet 16 of the cleaning device is located at the upper inner side of the second chamber, and the water outlet 10 is located at the bottom of the second chamber, connected to the water outlet pipe, which contains an activated carbon filter. An ultrasonic generator 8 is installed in the second chamber to generate ultrasonic waves. An air inlet 14 is opened on the inner wall of the cleaning device housing 1, and one side of the air inlet 14 is connected to the blower 7 in the lower chamber of the housing 1 through a connecting pipe. Clean air is blown in by the blower 7 for rapid drying of the utensils. A dioxin photodecomposition component is installed at the top of the second chamber to photodecompose residual dioxins on the utensils.

[0030] In a preferred embodiment, the cleaning program is set on the control panel 3 as follows: ultrasonic cleaning with alkaline detergent - rinsing with clean water - soaking in alkaline organic solvent - rinsing twice with clean water - drying with forced air - light irradiation - standby. This integrates the functions of cleaning, drying, and decomposing residual dioxins into one device.

[0031] In a preferred embodiment, an electric guide rail type lifting mechanism is provided on the inner sidewalls of the second cavity to change the height of the filter frame. The lifting mechanism includes a support frame, a guide rail, a hydraulic lifting rod, and a first motor. The support frame at the four corners of the second cavity supports the three-layer stainless steel filter frame 12 and is fixed with a limit guide rail 13. The top end of the electric hydraulic lifting rod 6 is connected to the bottom end of the lifting filter frame 12, and the electric hydraulic lifting rod is connected to the first motor. The bottom end of the first motor is fixed to the bottom of the box. Under the action of the hydraulic rod, the guide rail 13 allows the three-layer filter frame 12 to perform lifting and lowering actions step by step, maintaining the stability of the lifting of the filter frame 12 while facilitating the placement and removal of containers.

[0032] In a preferred embodiment, the storage tank 2 in the first chamber is filled with a sodium hydroxide-ethanol organic alkaline solution for soaking and washing utensils. Opening the valve allows the organic cleaning solvent in the storage tank 2 to flow into the second chamber. A reflux pipe is provided between the first and second chambers. Activating the reflux pump allows the alkaline organic solvent in the second chamber to be pumped back into the storage tank 2 via the reflux pipe, enabling the alkaline organic solvent to be reused and thus saving costs.

[0033] In a preferred embodiment, the dioxin photodecomposition assembly includes an ultraviolet lamp 15 and silicone strips. A horizontal sealing cover is provided at the top of the second chamber, with sealing silicone strips along the four edges of the cover, and the ultraviolet lamp 15 embedded in the center. Utilizing the principle of photochemical decomposition, the ultraviolet lamp irradiates the vessel at room temperature and pressure, causing the dioxins to dechlorinate, while the resulting ozone oxidation further decomposes them. After the vessel is cleaned and dried, the ultraviolet lamp is turned on to irradiate the vessel, causing any remaining dioxins to undergo photodecomposition, thus improving the cleaning efficiency of the vessel.

[0034] In a preferred embodiment, the filter frame of the second cavity is provided with a vessel inverting mechanism, such as... Figure 2 As shown, the vessel inverting mechanism includes a rotating shaft 9, a main rod 17, a movable triangular fork 11, and a second motor. Specifically, the bottom filter frame 12 of the second chamber is equipped with the rotating shaft 9, and the bottom of the main rod 17 is embedded in the rotating shaft 9. The diameter of the main rod 17 is smaller than the diameter of the vessel opening. A movable triangular fork 11 made of polytetrafluoroethylene is fixed to the main rod 17, which is used for the rapid drying of complex and difficult-to-dry vessels such as round-bottom flasks and Soxhlet extractors, improving their drying efficiency. Figures 3a-4b As shown, the horizontally positioned movable triangular fork 11 is placed into the cavity of the round-bottom flask and the Soxhlet extractor, ensuring full contact between the inner and outer walls of the vessels and the cleaning solution during cleaning. Once cleaning is complete and the drying process begins, the rotating shaft 9, driven by the second motor, rotates to upright the horizontally positioned movable triangular fork 11, which in turn uprights the round-bottom flask and the Soxhlet extractor, allowing the accumulated water inside the vessels to drain out completely and dry rapidly under the influence of airflow.

[0035] Working principle: The bottom of the main rod 17 of the movable triangular fork 11 is embedded in the rotating shaft 9. When the device is not in the drying program, the rotating shaft 9 and the movable triangular fork 11 lie horizontally on the mesh frame. When the device is in the washing program, the second motor is started to drive the rotating shaft 9 to rotate 90°. The rotating shaft drives the triangular fork embedded in it to rotate 90° as well, which also drives the container on it to stand upright, thereby improving the drying efficiency of the container.

[0036] In a preferred embodiment, the control system 4 adopts a PLC controller, a first valve is provided at the pipe opening of the connecting pipe, a second valve is provided at the water outlet, and a third valve is provided at the pipe opening of the air inlet pipe. The first valve, the second valve, and the third valve are all controlled by the PLC controller.

[0037] The method of using a dioxin detection laboratory glassware cleaning device according to an embodiment of this utility model includes the following steps:

[0038] 1. Place the containers to be cleaned and set the cleaning program. Arrange the different containers in the filter frame 12 according to their categories, and set the cleaning program on the control panel 3: ultrasonic cleaning with alkaline detergent for 30 minutes - ultrasonic cleaning with clean water for 5 minutes - soaking in alkaline organic solvent for 60 minutes - ultrasonic cleaning with clean water for 5 minutes (twice) - air drying in clean air - irradiation with ultraviolet light for 60 minutes.

[0039] 2. Alkaline detergent ultrasonic cleaning: Alkaline detergent is added to the cleaning chamber. The saponification, emulsification, and wetting effects of the alkaline detergent, together with the cavitation effect of ultrasound, remove organic dirt from the utensils.

[0040] 3. Ultrasonic cleaning with clean water: Add clean water to the water level line to wash away alkaline detergent and dirt on the utensils.

[0041] 4. Soaking in alkaline organic solvents: Use an ethanol organic solution containing NaOH to further wash away stubborn dirt in the vessel. This organic solvent can be reused after use.

[0042] 5. Ultrasonic cleaning with clean water: Add clean water to the water level line to thoroughly clean the inside and outside of the vessel of alkaline organic solvents.

[0043] 6. Clean air drying: To avoid excessively high drying temperatures that could further enrich residual dioxins in the containers, a clean air drying mode is used to ensure the containers are thoroughly dried.

[0044] 7. Light irradiation: Irradiate the glassware with an ultraviolet lamp of 15 to dechlorinate and decompose the residual dioxins on the glassware under the oxidation of ultraviolet light and ozone.

[0045] 8. Indication that the cleaning of the vessel is complete: After the program on the control panel has finished running, the device will emit a prompt sound to indicate that the cleaning of the vessel is complete.

[0046] Compared with the prior art, the embodiments of this utility model have the following advantages:

[0047] (1) By combining ultrasonic cleaning, ventilation drying and photodecomposition of residual dioxins, an integrated automatic and efficient cleaning system is used for daily cleaning of dioxin laboratory equipment.

[0048] (2) By setting a rotating shaft 9 and a movable triangular fork 11 on the filter screen frame, vessels that are difficult to clean and dry, such as round-bottom flasks and Soxhlet extractors, are placed to ensure thorough cleaning and drying, thereby improving cleaning and drying efficiency.

[0049] (3) By setting an ultraviolet lamp 15 to decompose residual dioxins on the vessel through light, it is ensured that there are no dioxin residues on the cleaned vessel, thereby improving the accuracy of dioxin detection and analysis.

[0050] The operation method of the dioxin detection laboratory glassware cleaning device provided in this embodiment of the utility model includes the following: When the glassware used after the dioxin detection and analysis experiment is completed, this device is used. On the operation control panel 3, click the "Open Top Cover" button and then click the "Up" button. The filter frame 12 is raised step by step under the action of the hydraulic lifting rod 6. The glassware to be cleaned is placed one by one on the filter frame 12. Glassware such as round-bottom flasks or Soxhlet extractors are placed on the bottom filter frame 12. The horizontal movable triangular fork 11 is placed into the glassware cavity. After all the glassware is placed in the second cavity, the working program is set on the operation control panel program, and the device is started. The device automatically runs the program operation. Operating Step 1: When the device is working, clean water and alkaline detergent flow into the cleaning chamber through the inlet pipe. Once the liquid level reaches the water level line, the ultrasonic generator 8 is activated, generating ultrasonic waves. After 30 minutes of ultrasonic cleaning with alkaline detergent, the wastewater is discharged through the outlet 10. The activated carbon filter in the outlet pipe can adsorb and filter the wastewater to reduce the emission of organic pollutants. Operating Step 2: Add clean water to the water level line and thoroughly ultrasonically clean the alkaline detergent and dirt inside and outside the vessel. The wastewater is discharged through the outlet. Operating Step 3: Open the first valve at the connection pipe of the storage tank 2. The ethanol organic solution containing NaOH flows into the second chamber to further wash away stubborn dirt inside the vessel. After cleaning, the organic solvent cleaning solution is returned by the suction of the return water pump 5. The contents are placed in storage tank 2 for subsequent cleaning. In step 4, clean water is added to the water level line and rinsed twice to ensure that alkaline organic solvents inside and outside the vessel are thoroughly removed. Wastewater is discharged through outlet 10. In step 5, blower 7 is started, and clean air enters the second chamber through the air outlet. At the same time, the second motor drives the rotating shaft 9 to rotate, so that the horizontal movable triangular fork 11 is upright. The movable triangular fork 11 also supports the vessel in an upright position, thereby ensuring that the difficult-to-dry vessel is thoroughly dried. In step 6, ultraviolet lamp 15 is turned on to irradiate the vessel, so that any dioxins that may remain on the vessel are dechlorinated and decomposed under the oxidation of ultraviolet light and ozone. After all the procedures are completed, the device will emit a prompt sound to indicate that the vessel cleaning is complete. The cleaned vessel can then be removed from the device.

[0051] Based on existing laboratory tests on the reusability of organic cleaning solvents, the results show that the solvent should be replaced after 10 uses when its color changes from colorless to yellow or even when sediment appears. There are two ways to replace the organic cleaning solvent: one is to open the stopcock at the bottom of the organic solvent tank, allowing the old organic solvent to enter the cleaning chamber and be discharged through the outlet, while the new organic solvent is poured in from the top of the tank; the other is to use a suction pump to suck the old organic solvent out from the top of the tank, and then pour the new organic solvent in from the top of the tank. Replacement is more convenient, and disassembly is also easier.

[0052] This utility model provides a highly efficient integrated cleaning device for a dioxin detection laboratory. The arrangement and connection of its components can be implemented in any way that achieves its beneficial effects.

[0053] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, with identical performance or use, should be considered within the protection scope of the present invention.

Claims

1. A dioxin detection laboratory glassware cleaning device, characterized in that, The device includes a housing, which contains a first chamber, a second chamber, a connecting pipe, a water outlet pipe, and a blower. The first chamber stores an alkaline organic solvent, and the second chamber is used to hold the vessels to be cleaned. The first chamber is connected to the second chamber via the connecting pipe. The bottom of the second chamber has a water outlet connected to the water outlet pipe. An air inlet pipe is provided on the side wall of the housing, with one end connected to the blower and the other end connected to the second chamber. An ultrasonic generator is installed inside the second chamber, and a dioxin photodecomposition component is installed on the top of the second chamber.

2. The dioxin detection laboratory glassware cleaning device as described in claim 1, characterized in that, The second cavity is provided with at least two layers of filter frames, and the inner wall of the second cavity is provided with a lifting mechanism that is connected to the filter frames to change the height of the filter frames.

3. The dioxin detection laboratory glassware cleaning device as described in claim 2, characterized in that, The lifting mechanism includes a support frame, a guide rail, a hydraulic lifting rod, and a first motor. The support frame is used to support the filter screen frame and is fixedly connected to the guide rail. The top end of the hydraulic lifting rod is connected to the bottom end of the filter screen frame, and the hydraulic lifting rod is connected to the first motor.

4. The dioxin detection laboratory glassware cleaning device as described in claim 1, characterized in that, The filter frame of the second cavity is provided with a vessel inverting mechanism. The vessel inverting mechanism includes a rotating shaft, a main rod, and a second motor. The bottom of the main rod is embedded in the rotating shaft. The diameter of the main rod is smaller than the diameter of the opening of the vessel. The second motor is used to drive the rotating shaft to rotate so that the main rod is in an upright state.

5. The dioxin detection laboratory glassware cleaning device as described in claim 4, characterized in that, A movable triangular fork is fixedly connected to the main rod.

6. The dioxin detection laboratory glassware cleaning device as described in claim 1, characterized in that, The box is also equipped with a reflux water pump, and a reflux pipe is provided between the first cavity and the second cavity. The reflux water pump is used to pump the alkaline organic solvent in the second cavity into the first cavity through the reflux pipe.

7. The dioxin detection laboratory glassware cleaning device as described in claim 1, characterized in that, The dioxin photodecomposition assembly includes an ultraviolet lamp and a silicone strip. A sealing cover is provided on the top of the second cavity, the silicone strip is provided on the edge of the sealing cover, and the ultraviolet lamp is embedded in the middle of the silicone strip.

8. The dioxin detection laboratory glassware cleaning device as described in claim 1, characterized in that, A first valve is installed at the inlet of the connecting pipe, a second valve is installed at the outlet of the water pipe, and a third valve is installed at the inlet of the air inlet pipe.

9. A dioxin detection laboratory glassware cleaning device as described in claim 1, characterized in that, The alkaline organic solvent is a sodium hydroxide-ethanol organic alkaline solution.

10. A dioxin detection laboratory glassware cleaning device as described in claim 1, characterized in that, An activated carbon filter is installed inside the water outlet pipe.

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