Laboratory harmful gas treatment device

Abstract

The invention belongs to the technical field of gas purification treatment, and particularly relates to a laboratory harmful gas treatment device which comprises a treatment box and two activated carbon assemblies, and further comprises a standby bin and a gas purification bin, the valve plate is used for controlling opening and closing of the port; the control mechanism is used for controlling the movement of the two activated carbon assemblies; the two through holes are formed in the outer side of the treatment chamber, the sealing bag is arranged in the standby bin to store the activated carbon assembly, the old activated carbon assembly is taken out from the through holes and put into the sealing bag to be sealed and stored, and the standby activated carbon assembly is inserted into the treatment box through the through holes, so that the replacement work of the activated carbon assembly can be rapidly completed; the replaced activated carbon assembly is stored in the sealing bag in a sealed mode, adsorbed acetone and other substances are prevented from being volatilized again, safety is improved, workers can directly take away the activated carbon assembly, and operation is more convenient.

Description

Technical Field

[0001] The invention belongs to the field of gas purification and treatment, in particular to a laboratory harmful gas treatment device. Background Art

[0002] Laboratories often use acetone when conducting physics and chemistry experiments. As an organic solvent, acetone can be used to clean and remove grease, resin, glass laboratory bottles and other substances, and is also commonly used in various chemical reactions. Since acetone is volatile and has an anesthetic effect on the central nervous system, high concentrations may cause coma. Therefore, the harmful gases produced in the laboratory often contain acetone. During the operation of the laboratory, it is necessary to pay attention to filtering the acetone in the harmful gases.

[0003] Existing laboratory harmful gas treatment systems mostly use ventilation devices such as suction fans to suck the experimental area. After the harmful gas is sucked into the gas pipeline, the acetone and other substances in the gas are adsorbed and filtered through devices such as activated carbon, and the gas is purified before being discharged.

[0004] Although activated carbon has a good adsorption effect on acetone, its adsorption capacity will gradually decrease with the increase of time and adsorption amount. If the amount of acetone adsorbed by activated carbon is too much, or the adsorption performance decreases significantly after multiple regenerations and cannot meet the use requirements, the activated carbon needs to be replaced. Due to the volatile nature of acetone, special attention should be paid to the evaporation of acetone in the activated carbon during the replacement process. The conventional operation method is to stop the equipment and turn off the ventilation equipment related to activated carbon adsorption to ensure that the gas flow in the system stops to avoid acetone leakage, and collect the activated carbon filled with acetone in a special sealed container to prevent acetone volatilization and leakage. The entire replacement process is relatively cumbersome and affects the normal operation of the laboratory.

[0005] To this end, the present invention provides a laboratory harmful gas treatment device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a laboratory harmful gas treatment device described in the present invention includes a treatment box and two activated carbon components, the interior of the treatment box is provided with a channel for the gas to pass through, the side wall of the treatment box is provided with two openings, and also includes: a spare warehouse, the spare warehouse cover is on the outside of the two openings, the spare warehouse is provided with a warehouse door, one of the activated carbon components is installed in the treatment box through the opening, and the other activated carbon component is placed in the spare warehouse; a valve plate for controlling the opening and closing of the opening; a control mechanism, the control mechanism is used to control the movement of the two activated carbon components.

[0008] Preferably, the activated carbon component comprises an outer shell, and the inner part of the outer shell is filled with an activated carbon layer. When the activated carbon component is loaded into the processing box, the outer shell seals the through opening.

[0009] Preferably, it also includes a sealing mechanism, which includes: a frame fixedly connected to the spare bin; a sealing bag fixedly connected to the frame, the sealing bag is used to seal and store the activated carbon assembly, and a sealing block is provided at the opening of the sealing bag, and the sealing block opens and closes the sealing bag after moving.

[0010] Preferably, the left and right ends of the frame are open, and the control mechanism includes two push plates slidably arranged in the spare bin, and the push plates are used to push the activated carbon assembly in and out of the sealing bag.

[0011] Preferably, the sealing mechanism further comprises a guide plate arranged at the bottom end of the frame, and the activated carbon assembly moves between the through port and the sealing bag via the guide plate.

[0012] Preferably, the sealing mechanism also includes: a first magnetic block fixedly connected to the sealing block; a magnetic conductive plate fixedly connected to the front and rear ends of the frame; a main magnet slidably arranged at the bottom end of the frame, wherein the main magnet contacts one of the magnetic conductive plates after movement to magnetize the magnetic conductive plate, and the magnetic force between the magnetized magnetic conductive plate and the first magnetic block pushes the sealing block to move.

[0013] Preferably, a card slot is provided on the side wall of the shell, and the frame and the activated carbon assembly installed in the processing box are staggered front and back, and the control mechanism also includes: a driving plate slidably arranged in the spare bin; a card plate slidably arranged on the driving plate, after the card plate is inserted into the card slot, the driving plate moves to drive the activated carbon assembly in and out of the processing box.

[0014] Preferably, the control mechanism also includes: a second magnetic block fixedly connected to the card plate; a lifting plate slidably arranged inside the spare bin, a reset spring for pushing the lifting plate is arranged inside the spare bin; a third magnetic block respectively fixedly connected to both ends of the lifting plate; a paddle plate rotatably arranged on the drive plate, the paddle plate being a one-way rotating structure, after the drive plate drives the activated carbon assembly to move out of the treatment box, the paddle plate contacts the lifting plate and drives the lifting plate to move, so that the third magnetic block is aligned with the second magnetic block, and the magnetic force between the third magnetic block and the second magnetic block pushes the paddle plate in and out of the card slot.

[0015] Preferably, the control mechanism further comprises: a telescopic rod arranged in an inclined state between the driving plate and the clamping plate; and a pushing spring for pushing the telescopic rod to unfold.

[0016] Preferably, the side wall of the processing box is connected to a venturi tube, and the venturi tube is located inside the spare bin.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. A laboratory harmful gas treatment device described in the present invention has two openings on the outside of the treatment chamber, and a sealed bag is set in the spare compartment to store the activated carbon component. The old activated carbon component is taken out from the opening and placed in the sealed bag for sealed storage, and the spare activated carbon component is inserted into the treatment box through the opening. In this way, the replacement of the activated carbon component can be completed quickly without stopping the machine, thereby improving work efficiency. The replaced activated carbon component is sealed and stored in the sealed bag to prevent the adsorbed acetone and other substances from volatilizing again, thereby improving safety. The staff can take it away directly, and the operation is more convenient.

[0019] 2. The laboratory harmful gas treatment device described in the present invention, by setting a control mechanism in the spare bin, the old activated carbon assembly can be moved out of the treatment box and the new activated carbon assembly can be moved into the treatment box during the forward and backward movement of the driving plate. The driving plate cooperates with the working part and the spare part in turn, and the coordinated work is automatically switched, eliminating the trouble of setting up two sets of driving systems for driving the two activated carbon assemblies to move forward and backward respectively, thereby simplifying the structure.

[0020] 3. The laboratory harmful gas treatment device described in the present invention can suck the gas in the spare bin into the treatment box by setting a venturi tube, so that the harmful gas in the laboratory can be sucked into the inside of the treatment box, and continue to be filtered and purified. The gas such as acetone volatilized during the replacement of the activated carbon component can be re-sucked into the inside of the treatment box, thereby reducing the amount of acetone in the spare bin, further improving safety, and no additional power system is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0023] Figure 2 It is a three-dimensional diagram of the internal structure of the spare bin and the coordination of the processing box;

[0024] Figure 3 It is an exploded view of the internal structure of the spare warehouse and the processing box;

[0025] Figure 4 It is a half-section diagram of the sealing bag and activated carbon assembly;

[0026] Figure 5 It is an exploded view of the sealing bag, activated carbon assembly and push plate;

[0027] Figure 6 It is an exploded view of the frame and the main magnet;

[0028] Figure 7 This is the exploded view of the drive board, the card board and the lifting board;

[0029] In the figure: 1. treatment box; 11. opening; 2. activated carbon assembly; 21. shell; 22. activated carbon layer; 23. slot; 3. spare bin; 31. bin door; 4. valve plate; 5. control mechanism; 51. push plate; 52. drive plate; 53. card plate; 54. second magnetic block; 55. lifting plate; 551. reset spring; 56. third magnetic block; 57. dial plate; 58. telescopic rod; 59. push spring; 6. sealing mechanism; 61. frame; 62. sealing bag; 63. sealing block; 64. guide plate; 65. first magnetic block; 66. magnetic conductive plate; 67. main magnet; 7. venturi tube. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Embodiment 1

[0032] like Figure 1-5As shown, a laboratory harmful gas treatment device described in an embodiment of the present invention includes a treatment box 1 and two activated carbon components 2, wherein the interior of the treatment box 1 is provided with a channel for the gas to pass through, and the side wall of the treatment box 1 is provided with two through openings 11, and also includes: a spare bin 3, wherein the spare bin 3 covers the outside of the two through openings 11, and a bin door 31 is provided on the spare bin 3, wherein one of the activated carbon components 2 is installed in the treatment box 1 through the through opening 11, and the other activated carbon component 2 is placed in the spare bin 3; a valve plate 4 for controlling the opening and closing of the through opening 11; and a control mechanism 5, wherein the control mechanism 5 is used to control the movement of the two activated carbon components 2.

[0033] Specifically, Figure 2 For example, the positive direction of the X-axis is the right direction, the positive direction of the Z-axis is the front direction, and the positive direction of the Y-axis is the upper direction; an air inlet and an air outlet are respectively provided on the right and left sides of the processing box 1, the air inlet is externally connected to a suction device, the suction device is used to pump the harmful gas in the laboratory into the processing box 1, and the harmful gas flows from right to left in the processing box 1, the air outlet can be externally connected to a gas pipeline, and the outlet of the gas pipeline extends to the outside of the laboratory; the port 11 is provided on the front side wall of the processing box 1, and the valve plate 4 is preferably but not limited to being slidably installed in the front side wall of the processing box 1, the valve plate 4 can slide left and right, and the opening and closing of the two ports 11 are controlled by one valve plate 4. Of course, the valve plates 4 can also be installed in the two ports 11 respectively.

[0034] Initially, the activated carbon component 2 installed in the right opening 11 is a working part, and the working part seals the right opening 11. The other activated carbon component 2 is a spare part, which is placed in the spare compartment 3 and is located on the left side of the left opening 11. The valve plate 4 closes the left opening 11, so that the spare compartment 3 is isolated from the treatment box 1 to prevent the harmful gas in the treatment box 1 from flowing into the spare compartment 3. When treating harmful gases in the laboratory, the harmful gas enters the treatment box 1 from the air inlet, and after contacting the activated carbon component 2, the activated carbon component 2 adsorbs and filters substances such as acetone in the gas, thereby purifying the gas, and the purified gas is discharged through the air outlet.

[0035] After working for a period of time, the adsorption capacity of the activated carbon in the working part decreases and needs to be replaced. At this time, first move the spare part in the spare bin 3 to align with the left port 11, move the control valve plate 4 to open the left port 11, move the working part out from the right port 11, and insert the spare part into the processing box 1 through the left port 11, and then close the right port 11. In this way, the replacement of the activated carbon component 2 can be completed quickly; after opening the bin door 31, the working part can be taken out of the spare bin 3 and a new activated carbon component 2 can be put in. This cycle can be repeated and can be used repeatedly. The replacement of the activated carbon component 2 can be completed without stopping the machine, thereby improving work efficiency and facilitating operation.

[0036] like Figure 2-5 As shown, the activated carbon component 2 includes a shell 21 , and the shell 21 is filled with an activated carbon layer 22 . When the activated carbon component 2 is loaded into the processing box 1 , the shell 21 seals the through opening 11 .

[0037] Specifically, when the activated carbon assembly 2 is installed inside the processing box 1 , the front side wall of the shell 21 extends to the outside of the through opening 11 and is located in the spare bin 3 .

[0038] like Figure 2-5 As shown, it also includes a sealing mechanism 6, which includes: a frame 61 fixedly connected to the spare bin 3; a sealing bag 62 fixedly connected to the frame 61, the sealing bag 62 is used to seal and store the activated carbon assembly 2, and a sealing block 63 is provided at the opening of the sealing bag 62, and the sealing block 63 is moved to open and close the sealing bag 62.

[0039] Since acetone is volatile, when replacing the activated carbon component 2, the acetone in the workpiece will also evaporate into the air, posing a safety hazard. Therefore, in the conventional method, the staff must first wear a gas mask before replacing the activated carbon component 2, which is time-consuming and laborious. For this reason, a sealed bag 62 is provided in the spare bin 3.

[0040] Specifically, the sealing bag 62 and the frame 61 are attached together by means of Velcro or the like, so that the sealing bag 62 can be taken out and installed on the frame 61. The sealing bag 62 is located on the left side of the left opening 11, and the opening of the sealing bag 62 faces right. The opening of the sealing bag 62 can be opened or closed by moving the sealing block 63 forward and backward. Initially, the spare parts are placed in the sealing bag 62, and the opening of the sealing bag 62 is closed. In this way, the spare parts are sealed and stored to prevent them from getting damp. When replacing the activated carbon component 2, the sealing block 63 is slid backward so that The opening of the sealing bag 62 is opened, and then the spare parts can be taken out of the sealing bag 62, and the replaced working parts can be put into the sealing bag 62, and the sealing block 63 is slid forward to seal the sealing bag 62 again. In this way, the replaced working parts can be sealed and stored. By setting up the sealing bag 62, substances such as acetone adsorbed in the working parts are prevented from volatilizing again, which improves the above-mentioned problem. After opening the spare warehouse 3, the staff can directly take away the sealing bag 62 containing the working parts, eliminating the trouble of wearing a gas mask and improving the convenience of operation.

[0041] like Figure 2-6 As shown, the left and right ends of the frame 61 are open, and the control mechanism 5 includes two push plates 51 slidably arranged in the spare bin 3 , and the push plates 51 are used to push the activated carbon assembly 2 in and out of the sealing bag 62 .

[0042] Specifically, the left push plate 51 is located on the left side of the sealed bag 62, and the right push plate 51 is located on the right side of the right through port 11. A hydraulic system or a pneumatic system for driving the push plate 51 to move left and right is provided in the spare bin 3. The four end faces of the sealed bag 62 in the up, down, front, and back directions are fixed on the frame 61. When replacing the activated carbon assembly 2, start the left push plate 51 to move to the right, and the spare parts in the sealed bag 62 can be pushed out to the right. Start the right push plate 51 to move to the left, and the replaced working parts can be pushed into the sealed bag 62.

[0043] As Figure 2-6 shown, the sealing mechanism 6 further includes a guide plate 64 provided at the bottom end of the frame 61. The activated carbon assembly 2 moves between the through port 11 and the sealed bag 62 through the guide plate 64.

[0044] Specifically, the top of the guide plate 64 is flush with the inner bottom wall of the through port 11. After the two push plates 51 move, they can push the activated carbon assembly 2 to move smoothly left and right, so that the activated carbon assembly 2 is aligned with the through port 11 front and back.

[0045] As Figure 2-6 shown, the sealing mechanism 6 further includes: a first magnetic block 65 fixedly connected to the sealing block 63; magnetic conduction plates 66 fixedly connected to the front and rear ends of the frame 61; a main magnet 67 slidably provided at the bottom end of the frame 61. After the main magnet 67 moves, it contacts one of the magnetic conduction plates 66, magnetizes the magnetic conduction plate 66, and the magnetic force between the magnetized magnetic conduction plate 66 and the first magnetic block 65 pushes the sealing block 63 to move.

[0046] Specifically, after the main magnet 67 moves back and forth, the sealing block 63 is driven to move back and forth through the cooperation of the magnetic conduction plate 66 and the first magnetic block 65. Initially, the main magnet 67 contacts the front magnetic conduction plate 66, magnetizes the front magnetic conduction plate 66, the front magnetic conduction plate 66 attracts the first magnetic block 65, and the sealing block 63 stays at the front end to seal the opening of the sealed bag 62. When replacing the activated carbon assembly 2, move the main magnet 67 backward so that the main magnet 67 contacts the rear magnetic conduction plate 66. After the rear magnetic conduction plate 66 is magnetized, it attracts the first magnetic block 65, driving the sealing block 63 to move backward, so that the opening of the sealed bag 62 is opened.

[0047] It should be noted that during the process of the activated carbon assembly 2 entering and leaving the sealed bag 62, preferably, the activated carbon assembly 2 does not contact the bag body of the sealed bag 62. When the sealing block 63 moves backward, the opening size of the opened sealed bag 62 is larger than the size of the activated carbon assembly 2. Support plates for placing and guiding the sealing block 63 are provided on both the front and rear sides of the frame 61. The support plates are in a C shape, and the front and back movement trajectories of the sealing block 63 are stable. Other structures that can satisfy opening and sealing the sealed bag 62 without affecting the entry and exit of the activated carbon assembly 2 into and out of the sealed bag 62 are applicable to the manufacture of the sealing mechanism 6.

[0048] like Figure 2-7 As shown, a card slot 23 is provided on the side wall of the shell 21, and the frame 61 is staggered front and back with the activated carbon assembly 2 installed in the processing box 1, and the control mechanism 5 also includes: a driving plate 52 slidably arranged in the spare bin 3; a card plate 53 slidably arranged on the driving plate 52, after the card plate 53 is inserted into the card slot 23, the driving plate 52 moves to drive the activated carbon assembly 2 in and out of the processing box 1.

[0049] Specifically, when replacing the activated carbon assembly 2, the spare parts in the sealing bag 62 are first removed, and the spare parts do not contact the driving plate 52 during the left-right movement. The control mechanism 5 is preferably but not limited to being set as two groups, upper and lower. The upper side wall and the lower side wall of the shell 21 are provided with a card slot 23, and the two driving plates 52 are respectively located at the upper and lower sides of the processing box 1. The spare compartment 3 is provided with a hydraulic system or a pneumatic system for driving the driving plate 52 to move forward and backward. The driving plate 52 can move forward and backward, and the card plate 53 can move left and right relative to the driving plate 52, and the card slots 23 are distributed along the left and right directions. When the card plate 53 is inserted into the card slot 23, the driving plate 52 moves forward and backward to drive the activated carbon component 2 in and out of the treatment box 1; after the card plate 53 moves left and right, it is inserted into the card slot 23 of another outer shell 21, and the driving plate 52 can drive another activated carbon component 2 to move. In this way, the function of driving different activated carbon components 2 to move forward and backward through a group of driving plates 52 is realized. The driving plate 52 cooperates with the working part and the spare part in turn, and the cooperation is automatically switched, which saves the trouble of setting up two groups of driving systems for driving the two activated carbon components 2 to move forward and backward, and simplifies the structure.

[0050] like Figure 2-7 As shown, the control mechanism 5 also includes: a second magnetic block 54 fixedly connected to the card plate 53; a lifting plate 55 slidably arranged inside the spare bin 3, and a reset spring 551 for pushing the lifting plate 55 is arranged inside the spare bin 3; a third magnetic block 56 respectively fixedly connected to both ends of the lifting plate 55; a paddle plate 57 rotatably arranged on the driving plate 52, and the paddle plate 57 is a unidirectional rotating structure. After the driving plate 52 drives the activated carbon assembly 2 to move out of the processing box 1, the paddle plate 57 contacts with the lifting plate 55 and drives the lifting plate 55 to move, so that the third magnetic block 56 is aligned with the second magnetic block 54, and the magnetic force between the third magnetic block 56 and the second magnetic block 54 pushes the paddle plate 57 to enter and exit the card slot 23.

[0051] Specifically, the paddle plate 57 is inclined, the top end of the paddle plate is rotatably connected to the driving plate 52, and a reset torsion spring is provided on the rotating shaft of the paddle plate 57. The bottom end of the paddle plate 57 can be deflected forward, and a baffle is provided on the driving plate 52. The baffle is blocked behind the paddle plate 57 to prevent the bottom end of the paddle plate 57 from deflecting backward; the lifting plate 55 is aligned front and back with the driving plate 52, and the lifting plate 55 is located on the front side of the frame 61, and the two third magnetic blocks 56 are respectively located on both sides of the two through openings 11.

[0052] Taking the control mechanism 5 above as an example, initially, the card plate 53 is inserted into the card slot 23 in the workpiece, and the driving plate 52 is fixed in position, and then the card plate 53 cooperates with the card slot 23 to keep the workpiece in a fixed position, preventing the workpiece from moving to the outside of the processing box 1, thereby ensuring the normal operation of the gas filtration work; the third magnetic block 56 is located above the second magnetic block 54.

[0053] When replacing the activated carbon component 2, the sealing block 63 moves backward, and after the opening of the sealing bag 62 is opened, the left push plate 51 moves rightward to push the spare part out of the sealing bag 62 until the spare part is aligned front and back with the left opening 11, and then the left push plate 51 moves back to reset; after starting the driving plate 52 to move forward, the working piece is driven forward to be moved out of the processing box 1. After the driving plate 52 moves forward, the dial plate 57 contacts the lifting plate 55 and pushes the lifting plate 55 downward, so that the third magnetic block 56 moves downward to be horizontally aligned with the second magnetic block 54. After the third magnetic block 56 on the right is aligned with the second magnetic block 54, it repels each other and pushes the card plate 53. Move left. During the movement of the card plate 53 to the left, as the driving plate 52 continues to move forward, the dial plate 57 and the lifting plate 55 are separated front and back, and the reset spring 551 pushes the lifting plate 55 to move up and reset, so that the third magnetic block 56 and the second magnetic block 54 are separated up and down. Then the card plate 53 moves left to the slot 23 of the spare part, and the driving plate 52 is started to move backward. The driving plate 52 drives the spare part to move backward and moves the spare part into the processing box 1. Then, the push plate 51 on the right is started to move left and push the workpiece into the sealing bag 62. The sealing block 63 moves forward to seal the opening of the sealing bag 62. In this way, the replacement of the activated carbon component 2 is completed.

[0054] It should be noted that the two push plates 51 can also drive the drive plate 52 to move through the transmission mechanism. When the left push plate 51 moves to the left to reset, it drives the drive plate 52 forward. When the right push plate 51 moves to the left, it drives the drive plate 52 backward. In this way, the drive system for individually controlling the forward and backward movement of the drive plate 52 can be omitted, further simplifying the structure.

[0055] like Figure 3-7 As shown, the control mechanism 5 further includes: a telescopic rod 58 arranged in an inclined shape between the driving plate 52 and the clamping plate 53; and a pushing spring 59 for pushing the telescopic rod 58 to unfold.

[0056] Specifically, the two ends of the telescopic rod 58 are rotatably connected to the driving plate 52 and the card plate 53 respectively, and the two ends of the telescopic rod 58 are respectively provided with bosses, and the two ends of the push spring 59 are respectively connected to the two bosses. The telescopic rod 58 maintains an inclined state under the push of the push spring 59, so that the card plate 53 maintains a fixed position after moving left or right, thereby improving the matching stability between the card plate 53 and the card slot 23, so that the card plate 53 can stably prevent the activated carbon assembly 2 from moving to the outside of the treatment box 1.

[0057] Embodiment 2

[0058] like Figure 2-3 As shown, in comparison with Example 1, another implementation of the present invention is that the side wall of the processing box 1 is connected to a venturi tube 7, and the venturi tube 7 is located inside the spare bin 3.

[0059] During the process of replacing the activated carbon component 2, when the port 11 is briefly opened, the harmful gas inside the treatment box 1 will flow into the spare bin 3. If the gas accumulates too much, there will be a safety hazard. This problem is solved by setting the venturi tube 7. Specifically, the venturi tube 7 is located on the right side of the right port 11, close to the air inlet, and the inner diameter of the venturi tube 7 is smaller than the inner diameter of the treatment box 1. By setting the venturi tube 7, according to the venturi effect, when the restricted flow passes through the reduced flow section, the flow velocity of the fluid increases, and an adsorption effect is generated, and the gas in the spare bin 3 is sucked into the treatment box 1, and the filtering and purification treatment is continued, thereby improving the problem of harmful gas entering the spare bin 3 and gathering during the replacement process; at the same time, the venturi tube 7 can also suck the acetone volatilized when the workpiece is moved out of the treatment box 1 into the treatment box 1, reducing the amount of acetone in the spare bin 3, further improving safety, and no additional power system is required.

[0060] It should be noted that the venturi tube 7 can always be in an open state, that is, it can always perform the function of sucking the gas in the spare chamber 3 into the processing box 1. In order to avoid the negative pressure in the spare chamber 3 that affects the movement of the structure, a gas replenishment port can be set on the spare chamber 3 to balance the pressure in the spare chamber 3. When the spare chamber 3 is set inside the laboratory, the venturi tube 7 sucks the gas in the experiment into the processing box 1 for processing, which is still the processing of laboratory gas, and will not increase the workload. A switch valve can also be set on the venturi tube 7 as needed.

[0061] Working principle: When treating harmful gases in the laboratory, the harmful gases enter the treatment box 1 from the air inlet, and after contacting with the activated carbon component 2, the activated carbon component 2 adsorbs and filters substances such as acetone in the gas, thereby purifying the gas, and the purified gas is discharged through the outlet.

[0062] After working for a period of time, the adsorption capacity of the activated carbon in the workpiece decreases and needs to be replaced. At this time, the main magnet 67 is moved backward so that the main magnet 67 contacts the rear magnetic plate 66. The rear magnetic plate 66 is magnetized and attracted to the first magnetic block 65, driving the sealing block 63 to move backward. After the opening of the sealing bag 62 is opened, the left push plate 51 moves right to push the spare part out of the sealing bag 62 until the spare part is aligned with the left opening 11 front and back, and then the left push plate 51 moves back to restore the sealing bag 62. After the driving plate 52 is started to move forward, the workpiece is driven forward to be removed from the processing box 1, and the corresponding opening 11 is closed. After the driving plate 52 moves forward, the paddle plate 57 contacts the lifting plate 55 and pushes the lifting plate 55 downward, so that the third magnetic block 56 moves downward to be horizontally aligned with the second magnetic block 54. The third magnetic block 56 on the right is aligned with the second magnetic block 54 and then repels each other, pushing the card plate 53 to move left. During the movement of the card plate 53 to the left, as the driving plate 52 continues to move forward, the paddle plate 57 and the second magnetic block 54 are aligned and repelled. The lifting plate 55 is separated front and back, and the reset spring 551 pushes the lifting plate 55 to move up and reset, so that the third magnetic block 56 and the second magnetic block 54 are separated up and down, and then the card plate 53 moves left to the card slot 23 of the spare part, and the driving plate 52 is started to move backward, and the driving plate 52 drives the spare part to move backward, and the spare part is moved into the processing box 1. Then, the push plate 51 on the right is started to move left, and the working piece is pushed into the sealing bag 62, and the main magnet 67 is moved forward to drive the sealing block 63 to move forward to seal the opening of the sealing bag 62. In this way, the replacement work of the activated carbon component 2 can be completed quickly, and the replaced working piece is sealed and stored in the sealing bag 62 to prevent the adsorbed acetone and other substances from volatilizing again, thereby improving safety; after opening the warehouse door 31, the sealing bag 62 is taken out of the spare warehouse 3, and the sealing bag 62 containing a new activated carbon component 2 is put in. This cycle can be reused without stopping the machine, and the replacement work of the activated carbon component 2 can be completed, thereby improving work efficiency and convenient operation.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laboratory harmful gas treatment device, comprising a treatment box (1) and two activated carbon components (2), wherein a channel for the gas to pass through is provided inside the treatment box (1), characterized in that: The side wall of the processing box (1) is provided with two openings (11), and further comprises: A spare bin (3), the spare bin (3) covering the outside of the two through openings (11), the spare bin (3) being provided with a bin door (31), one of the activated carbon components (2) passing through the through opening (11) and installed in the processing box (1), and the other activated carbon component (2) being placed in the spare bin (3); A valve plate (4) for controlling the opening and closing of the port (11); A control mechanism (5), wherein the control mechanism (5) is used to control the movement of the two activated carbon components (2).

2. A laboratory harmful gas treatment device according to claim 1, characterized in that: The activated carbon component (2) comprises an outer shell (21), the inner part of which is filled with an activated carbon layer (22); when the activated carbon component (2) is installed in the processing box (1), the outer shell (21) seals the opening (11).

3. A laboratory harmful gas treatment device according to claim 2, characterized in that: The invention also comprises a sealing mechanism (6), wherein the sealing mechanism (6) comprises: A frame (61) fixedly connected to the spare bin (3); A sealing bag (62) is fixedly connected to the frame (61), and the sealing bag (62) is used to seal and store the activated carbon assembly (2). A sealing block (63) is provided at the opening of the sealing bag (62), and the sealing block (63) is moved to open and close the sealing bag (62).

4. A laboratory harmful gas treatment device according to claim 3, characterized in that: The left and right ends of the frame (61) are open, and the control mechanism (5) comprises two push plates (51) slidably arranged in the spare bin (3), and the push plates (51) are used to push the activated carbon assembly (2) in and out of the sealing bag (62).

5. A laboratory harmful gas treatment device according to claim 4, characterized in that: The sealing mechanism (6) further comprises a guide plate (64) arranged at the bottom end of the frame (61), and the activated carbon component (2) moves between the through port (11) and the sealing bag (62) via the guide plate (64).

6. A laboratory harmful gas treatment device according to claim 5, characterized in that: The sealing mechanism (6) further comprises: a first magnetic block (65) fixedly connected to the sealing block (63); A magnetic conductive plate (66) fixedly connected to the front and rear ends of the frame (61); A main magnet (67) is slidably disposed at the bottom end of the frame (61). After the main magnet (67) moves, it contacts one of the magnetic conductive plates (66) to magnetize the magnetic conductive plate (66). The magnetic force between the magnetized magnetic conductive plate (66) and the first magnetic block (65) pushes the sealing block (63) to move.

7. A laboratory harmful gas treatment device according to claim 6, characterized in that: A slot (23) is provided on the side wall of the housing (21), the frame (61) and the activated carbon assembly (2) installed in the processing box (1) are staggered front and back, and the control mechanism (5) further comprises: A driving plate (52) slidably disposed in the spare compartment (3); A card plate (53) is slidably arranged on the driving plate (52). After the card plate (53) is inserted into the card slot (23), the driving plate (52) moves to drive the activated carbon assembly (2) in and out of the processing box (1).

8. A laboratory harmful gas treatment device according to claim 7, characterized in that: The control mechanism (5) further comprises: A second magnetic block (54) fixedly connected to the card plate (53); A lifting plate (55) is slidably arranged inside the spare compartment (3), wherein a return spring (551) for pushing the lifting plate (55) is arranged inside the spare compartment (3); A third magnetic block (56) fixedly connected to both ends of the lifting plate (55); The paddle plate (57) disposed on the driving plate (52) is rotated, and the paddle plate (57) is a unidirectional rotating structure. After the driving plate (52) drives the activated carbon assembly (2) to move out of the processing box (1), the paddle plate (57) contacts the lifting plate (55) and drives the lifting plate (55) to move, so that the third magnetic block (56) is aligned with the second magnetic block (54), and the magnetic force between the third magnetic block (56) and the second magnetic block (54) pushes the paddle plate (57) to enter and exit the slot (23).

9. A laboratory harmful gas treatment device according to claim 8, characterized in that: The control mechanism (5) further comprises: a telescopic rod (58) arranged in an inclined manner between the driving plate (52) and the clamping plate (53); A push spring (59) is used to push the telescopic rod (58) to unfold.

10. A laboratory harmful gas treatment device according to claim 9, characterized in that: The side wall of the processing box (1) is connected to a venturi tube (7), and the venturi tube (7) is located inside the standby bin (3).

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