Ventilation cabinet capable of treating laboratory waste gas

Abstract

The utility model discloses a fume cupboard capable of processing laboratory waste gas, which comprises a cupboard body, the bottom of the cupboard body is fixedly connected with a support rod, the inner wall of the cupboard body is fixedly connected with a water tank, the inside of the water tank is slidably sleeved with a filter screen, the inside of the cupboard body is fixedly connected with two symmetrically distributed air outlets, and the two symmetrically distributed air outlets are fixedly connected with the bottom of the cupboard body. A fixing box is fixedly connected to the right end of the cabinet body, a primary screening mechanism is arranged on the fixing box, and a filtering mechanism is arranged in the cabinet body. Through the effect of the air pump, the air pump can suck the interior of the fixed box, negative pressure can be formed in the fixed box, the fixed box can suck and collect waste gas through the gas collecting hood, and after the waste gas enters the fixed box, large particles in the waste gas can be firstly screened out through the effect of the screen; and particulate impurities are prevented from blocking the air pump and cleaning pipelines difficultly.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to a fume hood capable of treating laboratory waste gas. Background Art

[0002] Fume hoods are key experimental equipment in laboratories. Experimenters can mix and react various chemical reagents in the fume hood, and then purify and discharge various harmful gases through the fume hood to protect the safety of experimenters.

[0003] The utility model patent with the patent authorization announcement number CN219744301U discloses a laboratory waste gas purification fume hood, including a fume hood, a reaction chamber, a transparent protective door panel, a purification chamber, a filtered liquid, an air pump, a wind collecting hood, an air collecting pipe, an air supply pipe, a drying box, an electric heating wire, an air duct and an exhaust pipe. The reaction chamber is arranged in the upper end of the fume hood, and the reaction chamber is arranged in a hollow cavity with one end open. The transparent protective door panel is arranged at the open end of the reaction chamber, and one end of the transparent protective door panel is hinged to the side wall of the fume hood. The purification chamber is arranged in the lower end of the fume hood, and the filtered liquid is arranged in the purification chamber. The utility model belongs to the field of waste gas purification technology, and specifically provides a laboratory waste gas purification fume hood that filters dust particles in waste gas through water, which has a higher filtering efficiency than a filter screen, and the filtered waste water is directly discharged from the drain pipe, eliminating the step of cleaning the filter screen, and has good purification effect, simple operation, and saves time and effort.

[0004] In the above-mentioned prior art, during the waste gas treatment process, the waste gas can be sucked by an air pump, but since the waste gas contains particulate impurities, it is not convenient to pre-treat it, which may cause blockage of the air pump or pipeline, affecting the use, and when the waste gas is treated by filtrate, it may not be possible to ensure that the reaction time between the waste gas and the filtrate is sufficient, which will affect the waste gas treatment effect. Therefore, improvements are needed. Utility Model Content

[0005] The utility model aims to provide a fume hood capable of treating laboratory waste gas, which solves the problem that waste gas particles may cause blockage of air pumps or pipelines, and also solves the problem that insufficient reaction time between waste gas and filtrate affects the treatment effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fume hood capable of treating laboratory waste gas, comprising a cabinet body, the bottom of the cabinet body is fixedly connected to a support rod, the inner wall of the cabinet body is fixedly connected to a water tank, the inner part of the water tank is slidably sleeved with a filter screen, the interior of the cabinet body is fixedly connected to two symmetrically distributed air outlets, the right end of the cabinet body is fixedly connected to a fixed box, the fixed box is provided with a primary screening mechanism, and the interior of the cabinet body is provided with a filtering mechanism.

[0007] Preferably, the number of the support rods is four, and the four support rods are evenly distributed at the bottom of the cabinet. By designing the support rods, the overall structure can be supported.

[0008] Preferably, the primary screening mechanism includes an air collecting hood, the upper end of the cabinet is fixedly connected to the air collecting hood, the top of the air collecting hood is fixedly connected to a fixed pipe, the fixed pipe is fixedly connected to the cabinet, the fixed pipe is fixedly connected to a fixed box, a screen is fixedly connected to the inside of the fixed box, an air pump is fixedly connected to the inner wall of the fixed box, a suction port is provided at the bottom of the air pump, and an exhaust port is provided at the left end of the air pump. By designing the primary screening mechanism, larger particulate impurities can be removed.

[0009] Preferably, the exhaust port passes through the cabinet and is fixedly connected to the cabinet, and the exhaust port is fixedly connected to the water tank. By designing the exhaust port, the gas can be discharged into the water tank.

[0010] Preferably, the filtering mechanism includes a water pump, the left end of the cabinet is fixedly connected to the water pump, the right end of the water pump is provided with a water inlet pipe, the water inlet pipe is respectively fixedly connected to the cabinet and the sink, the top of the water pump is provided with a drain pipe, the drain pipe runs through the cabinet and is fixedly connected to the cabinet, the right end of the drain pipe is fixedly connected to a ring pipe, the bottom of the ring pipe is fixedly connected to a nozzle, the top of the ring pipe is fixedly connected to a fixed block, and the fixed block is fixedly connected to the cabinet. By designing the filtering mechanism, the waste gas can be treated through the filtrate reaction.

[0011] Preferably, there are multiple nozzles, which are arranged in a ring shape and evenly distributed on the annular tube. The nozzles are designed so that the filtrate can be sprayed through the nozzles.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model is designed with the function of an air pump, which can suck the inside of a fixed box to form a negative pressure inside the fixed box. The fixed box can absorb and collect the exhaust gas through an air collecting hood. After the exhaust gas enters the fixed box, the screen can first screen out larger particles in the exhaust gas to prevent the particulate impurities from clogging the air pump and making the pipeline difficult to clean.

[0014] 2. The utility model designs the function of a water tank, and a filtrate is arranged inside the water tank. When the exhaust gas enters, the fine particles can be adsorbed by the filtrate and the exhaust gas can be purified at the same time. During the treatment process, the filtrate inside the water tank can be sucked out by the action of a water pump and then sprayed through a nozzle. The gas after the filtrate treatment can be sprayed for the second time to prevent the filtrate from being in contact with the gas for insufficient time and affecting the treatment effect. The filter can be taken out directly, and the impurities inside the filtrate can be taken out when it is taken out, which is convenient for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A three-dimensional cross-sectional view of the local structure;

[0017] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0018] Figure 4 For this utility model Figure 2 A three-dimensional cross-sectional view of the fixed box structure.

[0019] In the figure: 1. cabinet; 2. support rod; 3. sink; 4. filter; 5. air outlet; 6. fixed box; 7. primary screening mechanism; 8. filtering mechanism; 71. air collecting hood; 72. fixed pipe; 73. screen; 74. air pump; 75. suction port; 76. exhaust port; 81. water pump; 82. water inlet pipe; 83. drain pipe; 84. ring pipe; 85. nozzle; 86. fixed block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 A fume hood capable of treating laboratory waste gas comprises a cabinet body 1, a support rod 2 is fixedly connected to the bottom of the cabinet body 1, the number of the support rods 2 is four, and the four support rods 2 are evenly distributed at the bottom of the cabinet body 1. By designing the support rods 2, the overall structure can be supported, a water tank 3 is fixedly connected to the inner wall of the cabinet body 1, a filter screen 4 is slidably sleeved inside the water tank 3, two symmetrically distributed air outlets 5 are fixedly connected inside the cabinet body 1, a fixed box 6 is fixedly connected to the right end of the cabinet body 1, a primary screening mechanism 7 is arranged on the fixed box 6, and a filtering mechanism 8 is arranged inside the cabinet body 1.

[0022] See also Figure 1 , Figure 2 , Figure 4The primary screening mechanism 7 includes an air collecting hood 71, the upper end of the cabinet 1 is fixedly connected with the air collecting hood 71, the top of the air collecting hood 71 is fixedly connected with a fixed pipe 72, the fixed pipe 72 is fixedly connected to the cabinet 1, the fixed pipe 72 is fixedly connected to the fixed box 6, the fixed box 6 is fixedly connected with a screen 73, the inner wall of the fixed box 6 is fixedly connected with an air pump 74, the bottom of the air pump 74 is provided with a suction port 75, the left end of the air pump 74 is provided with an exhaust port 76, the exhaust port 76 runs through the cabinet 1 and is fixedly connected to the cabinet 1, the exhaust port 76 is fixedly connected to the water tank 3, by designing the exhaust port 76, the gas can be discharged into the water tank 3, and by designing the primary screening mechanism 7, larger particulate impurities can be removed.

[0023] See also Figure 1 , Figure 2 , Figure 3 The filtering mechanism 8 includes a water pump 81, the left end of the cabinet 1 is fixedly connected to the water pump 81, the right end of the water pump 81 is provided with a water inlet pipe 82, the water inlet pipe 82 is respectively fixedly connected to the cabinet 1 and the water tank 3, a drain pipe 83 is provided on the top of the water pump 81, the drain pipe 83 runs through the cabinet 1 and is fixedly connected to the cabinet 1, the right end of the drain pipe 83 is fixedly connected to a ring pipe 84, the bottom of the ring pipe 84 is fixedly connected to a nozzle 85, the number of the nozzles 85 is multiple, and the multiple nozzles 85 are annular and evenly distributed on the ring pipe 84. By designing the nozzle 85, the filtrate can be sprayed through the nozzle 85, the top of the ring pipe 84 is fixedly connected to a fixed block 86, and the fixed block 86 is fixedly connected to the cabinet 1. By designing the filtering mechanism 8, the exhaust gas can be treated through the filtrate reaction.

[0024] The specific implementation process of the utility model is as follows: when in use, the air pump 74 works, and the air pump 74 sucks the inside of the fixed box 6 through the suction port 75, so that a negative pressure is formed inside the fixed box 6, and then the fixed box 6 is sucked through the fixed pipe 72, so that the exhaust gas generated in the experiment is collected through the air collecting hood 71, and then the exhaust gas will enter the fixed box 6. Under the action of the screen 73, the larger particles in the exhaust gas can be screened out first to avoid the particulate impurities clogging the air pump 74 and the pipeline being difficult to clean.

[0025] After the initial screening, the gas is discharged into the water tank 3 through the exhaust port 76. The water tank 3 is provided with a filtrate. When the waste gas enters, the fine particles can be adsorbed by the filtrate, and the waste gas can be purified at the same time. When the waste gas is purified, it will flow out through the water tank 3. At the same time, the water pump 81 sucks the inside of the water tank 3 through the water inlet pipe 82, and the filtrate will be discharged through the drain pipe 83. Then the filtrate will be discharged into the annular pipe 84. Finally, the filtrate is sprayed through the nozzle 85. The gas after the filtrate treatment can be sprayed for a second time to prevent the filtrate from being in contact with the gas for insufficient time and affecting the treatment effect. The treated gas can finally be discharged through the air outlet 5. And the filter 4 can be taken out directly. When taking it out, impurities cannot pass through the filter 4. The filter 4 can take out the impurities inside the filtrate, which is convenient for subsequent use.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fume hood capable of treating laboratory waste gas, comprising a hood body (1), Features: The bottom of the cabinet (1) is fixedly connected to a support rod (2), the inner wall of the cabinet (1) is fixedly connected to a water tank (3), a filter screen (4) is slidably sleeved inside the water tank (3), two symmetrically distributed air outlets (5) are fixedly connected inside the cabinet (1), the right end of the cabinet (1) is fixedly connected to a fixed box (6), a primary screening mechanism (7) is arranged on the fixed box (6), and a filtering mechanism (8) is arranged inside the cabinet (1).

2. A fume hood capable of treating laboratory exhaust gas according to claim 1, Features: The number of the support rods (2) is four, and the four support rods (2) are evenly distributed at the bottom of the cabinet (1).

3. A fume hood capable of treating laboratory exhaust gas according to claim 1, Features: The primary screening mechanism (7) comprises an air collecting hood (71), the upper end of the cabinet (1) is fixedly connected to the inside of the air collecting hood (71), the top of the air collecting hood (71) is fixedly connected to a fixed pipe (72), the fixed pipe (72) is fixedly connected to the cabinet (1), the fixed pipe (72) is fixedly connected to a fixed box (6), the inside of the fixed box (6) is fixedly connected to a screen (73), the inner side wall of the fixed box (6) is fixedly connected to an air pump (74), the bottom of the air pump (74) is provided with a suction port (75), and the left end of the air pump (74) is provided with an exhaust port (76).

4. A fume hood capable of treating laboratory exhaust gas according to claim 3, Features: The exhaust port (76) passes through the cabinet (1) and is fixedly connected to the cabinet (1); the exhaust port (76) is fixedly connected to the water tank (3).

5. A fume hood capable of treating laboratory exhaust gas according to claim 1, Features: The filtering mechanism (8) comprises a water pump (81), the left end of the cabinet (1) is fixedly connected to the water pump (81), the right end of the water pump (81) is provided with a water inlet pipe (82), the water inlet pipe (82) is respectively fixedly connected to the cabinet (1) and the water tank (3), the top of the water pump (81) is provided with a drain pipe (83), the drain pipe (83) penetrates the cabinet (1) and is fixedly connected to the cabinet (1), the right end of the drain pipe (83) is fixedly connected to a ring pipe (84), the bottom of the ring pipe (84) is fixedly connected to a nozzle (85), the top of the ring pipe (84) is fixedly connected to a fixed block (86), and the fixed block (86) is fixedly connected to the cabinet (1).

6. A fume hood capable of treating laboratory exhaust gas according to claim 5, Features: There are a plurality of nozzles (85), and the plurality of nozzles (85) are arranged in a ring shape and evenly distributed on the annular tube (84).

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