Ventilation cabinet for harmful gas treatment

Abstract

The utility model discloses a fume hood for harmful gas treatment, which belongs to the technical field of fume hoods and comprises a hood body, a fan and a first guide pipe are fixedly connected to two sides of the top surface of the hood body respectively, an electromagnetic valve is fixedly connected to one side of the fan, and a second guide pipe is fixedly connected to the other side of the fan. A second guide pipe is fixedly connected to one side of the electromagnetic valve, a supporting sleeve is arranged in the middle of the opposite faces of the first guide pipe and the second guide pipe, fixing sleeves are fixedly connected to the end, close to the inner side, of the first guide pipe and the end, close to the inner side, of the second guide pipe correspondingly, and a first flange is fixedly connected to one end of each fixing sleeve; according to the scheme, the filtering assembly capable of being rapidly assembled and disassembled is arranged, the filtering assembly can be conveniently replaced, the ventilation cabinet can conveniently filter harmful gas, the sealing adjusting assembly is arranged, it can be guaranteed that a pipeline is smooth, meanwhile, when the filtering assembly is replaced, the pipeline can be kept in a sealed state, and the problem of dust permeation is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation cabinet technical field, more specifically, relate to a harmful gas treatment with ventilation cabinet. BACKGROUND

[0002] Ventilation cabinet is a kind of equipment for laboratory exhaust ventilation, main function is to protect scientific researchers from the harm of toxic chemical fume, in the chemical experiment process, ventilation cabinet can effectively discharge chemical smoke, vapor, dust and toxic gas, prevent these substances from spreading to laboratory environment, to protect the safety of scientific researchers and experimental environment.

[0003] Based on the above, the present inventor found that: the existing ventilation cabinet filters harmful gas through filter assembly, filter assembly needs to be replaced periodically, but filter assembly is fixed on gas delivery pipeline, is not easy to install and disassemble, the convenience of filter assembly replacement is affected, therefore, in view of this, the existing structure is researched and improved, provide a kind of harmful gas treatment with ventilation cabinet, to reach the purpose of more practical value. UTILITY MODEL CONTENT

[0004] 1. Technical problem to be solved

[0005] In view of the problems in the prior art, the utility model aims at providing a harmful gas treatment with ventilation cabinet, the filter assembly of the present scheme can be quickly assembled and disassembled, the replacement work of filter assembly is facilitated, the ventilation cabinet is facilitated to filter and treat harmful gas, and the sealing adjusting assembly is arranged, which can ensure that the pipeline is unobstructed, and at the same time, when the filter assembly is replaced, the pipeline can be kept in a sealed state, reducing the problem of dust penetration.

[0006] 2. Technical scheme

[0007] To solve the above problems, the utility model adopts the following technical scheme.

[0008] A harmful gas treatment with ventilation cabinet, including cabinet, the top surface of the cabinet is fixedly connected with fan and first pipe on both sides respectively, one side of the fan is fixedly connected with electromagnetic valve, one side of the electromagnetic valve is fixedly connected with second pipe, the opposite surface of the first pipe and second pipe is provided with support sleeve in the middle, and the inner side of the first pipe is fixedly connected with fixed sleeve, and the inner side of the second pipe is fixedly connected with fixed sleeve, one end of the fixed sleeve is fixedly connected with first flange, and the inside of the fixed sleeve is provided with sealing mechanism, the inside of the support sleeve is fixedly connected with filter core in the middle, and the both ends of the support sleeve are provided with connecting barrel, one end of the connecting barrel is fixedly connected with extrusion head outside, and the middle of the connecting barrel is fixedly connected with second flange;

[0009] The sealing mechanism comprises a set of sealing blocks, the inner side of the sealing block is provided with a pressure groove, and a pair of guide rods is arranged on the outer side of the sealing block, and the outer side of the guide rod is provided with a reset spring.

[0010] Further, the upper end of the cabinet body is fixedly connected with a harmful gas detector on one side, and the input end of the harmful gas detector is fixedly connected with the second conduit.

[0011] Further, the two first flanges are respectively matched with the two second flanges, and the connecting portion of the first flange and the second flange is threadedly connected with a bolt.

[0012] Further, the connecting barrel is fixedly connected with a threaded ring on one end of the side, and the threaded ring is threadedly connected with the supporting sleeve.

[0013] Further, the extrusion head is located in the fixed sleeve, and the side of the extrusion head is matched with the pressure groove.

[0014] Further, the sealing block is slidably connected with the fixed sleeve, and the sides of the two adjacent sealing blocks are attached.

[0015] Further, the outer end of the guide rod and the reset spring is fixedly connected with the inner surface of the fixed sleeve, and the other end of the reset spring is fixedly connected with the sealing block.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] (1) the position can be adjusted by rotating the connecting barrel, so as to drive the extrusion head and the fixed sleeve to be connected, and then the first flange is matched with the second flange through the bolt, so that the connecting barrel can be fixed, and vice versa, the connecting barrel can be disassembled, compared with the prior art, the filter assembly can be quickly assembled and disassembled, the replacement work of the filter assembly is facilitated, and the fume hood is facilitated to filter and treat harmful gases.

[0019] (2) by setting the sealing mechanism, after the extrusion head and the sealing block are separated, the sealing block is driven to slide inward by the reset spring, so that the sides of the adjacent sealing blocks are attached, a plurality of sealing blocks are matched with each other, the inside of the fixed sleeve is sealed, and vice versa, after the extrusion head and the sealing block are in contact, the sealing block slides outward, and then the adjacent sealing blocks are separated, the inside of the fixed sleeve is smooth, compared with the prior art, the sealing adjustment assembly is arranged, the pipeline can be ensured to be smooth, and at the same time, the pipeline can be kept in a sealed state when the filter assembly is replaced, and the problem of dust penetration is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the utility model;

[0021] Figure 2 The position relation schematic view of the supporting sleeve and the fixed cylinder of the utility model;

[0022] Figure 3 The structure schematic view of the connecting cylinder of the utility model;

[0023] Figure 4 The structure schematic view of the sealing mechanism of the utility model.

[0024] Mark explanation in the drawing: 1, cabinet body; 2, fan; 3, first conduit; 4, electromagnetic valve; 5, second conduit; 6, supporting sleeve; 7, first flange; 8, sealing mechanism; 9, filter core; 10, connecting cylinder; 11, extrusion head; 12, second flange; 13, fixed sleeve; 14, sealing block; 15, pressure receiving groove; 16, guide rod; 17, return spring. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor fall within the scope of the utility model.

[0026] Embodiment:

[0027] Please refer to Figures 1-4 A ventilation cabinet for harmful gas treatment, including cabinet body 1, the top surface of cabinet body 1 is fixedly connected with fan 2 and first conduit 3 respectively on both sides, one side of fan 2 is fixedly connected with electromagnetic valve 4, one side of electromagnetic valve 4 is fixedly connected with second conduit 5, the opposite surface of first conduit 3 and second conduit 5 is provided with supporting sleeve 6 in the middle, the inner side of one end of first conduit 3 and the inner side of one end of second conduit 5 are all fixedly connected with fixed sleeve 13, one end of fixed sleeve 13 is fixedly connected with first flange 7, and the inside of fixed sleeve 13 is provided with sealing mechanism 8, the inside of supporting sleeve 6 is fixedly connected with filter core 9 in the middle, and the both ends of supporting sleeve 6 are all provided with connecting cylinder 10, one end of connecting cylinder 10 is fixedly connected with extrusion head 11 outside, and the middle of connecting cylinder 10 is fixedly connected with second flange 12;

[0028] Sealing mechanism 8 includes a group of sealing blocks 14, the inner side of sealing block 14 is provided with pressure receiving groove 15, and the outer side of sealing block 14 is provided with a pair of guide rods 16, the outer side of guide rod 16 is provided with return spring 17, in order to keep the pipeline sealed state when replacing the filter assembly, reduce the problem of dust penetration, sealing mechanism 8 is provided.

[0029] Please refer to Figure 1The upper end of the cabinet body 1 is fixedly connected with a harmful gas detector on one side, and the input end of the harmful gas detector is fixedly connected with the second conduit 5. The detector is used for detecting the gas in the second conduit 5, so as to ensure that the discharged gas meets the requirements.

[0030] Referring to Figure 2 The two first flanges 7 are respectively matched with the two second flanges 12, and bolts are threadedly connected at the connecting positions of the first flange 7 and the second flange 12. The first flange 7 is matched with the second flange 12 to fix the position of the connecting cylinder 10.

[0031] Referring to Figure 3 The connecting cylinder 10 is fixedly connected with a threaded ring on one end on one side, and the threaded ring is threadedly connected with the supporting sleeve 6. The position of the connecting cylinder 10 can be adjusted by rotating the connecting cylinder 10.

[0032] Referring to Figure 3 The extruding head 11 is located in the fixed sleeve 13, and the side edge of the extruding head 11 is matched with the pressure receiving groove 15. When the extruding head 11 enters the fixed sleeve 13, the extruding head 11 extrudes the pressure receiving groove 15, so that the sealing block 14 slides outward, the adjacent sealing block 14 is separated, the fixed sleeve 13 is smooth, and the gas can be conveyed.

[0033] Referring to Figure 4 The sealing block 14 is slidably connected with the fixed sleeve 13, and the side edges of the adjacent two sealing blocks 14 are abutted. The side edges of the adjacent sealing blocks 14 are abutted, and the fixed sleeve 13 is sealed by the cooperation of the plurality of sealing blocks 14.

[0034] Referring to Figure 4 The outer end of the guide rod 16 and the reset spring 17 is fixedly connected with the inner surface of the fixed sleeve 13, and the other end of the reset spring 17 is fixedly connected with the sealing block 14. When the extruding head 11 is separated from the sealing block 14, the reset spring 17 drives the sealing block 14 to move inward, and the guide rod 16 ensures the stability of the movement of the sealing block 14.

[0035] In use: through the cabinet 1 test work, while starting fan 2 guide air flow inside the cabinet 1, air through the first conduit 3 into the support sleeve 6 inside, by filter 9 after filtering work, then through the second conduit 5 cooperate with electromagnetic valve 4 discharge, through the detector to the second conduit 5 inside gas detection, if the gas does not meet the emission standards, electromagnetic valve 4 is closed, ensure test safety, need to replace filter 9, first remove the first flange 7 and the second flange 12 connection bolt, then rotate the connecting cylinder 10, make extrusion head 11 and sealing block 14 separate, through the return spring 17 drive sealing block 14 slide inwards, by guide rod 16 ensure the stability of the movement of sealing block 14, make the side of adjacent sealing block 14 fit, by multiple sealing block 14 cooperate with each other, make the inside of the fixed sleeve 13 sealed, reduce the problem of dust penetration, then the new support sleeve 6 is placed between the two fixed sleeve 13, rotate the connecting cylinder 10 can be adjusted position, make the new extrusion head 11 into the fixed sleeve 13 inside, extrusion head 11 extrusion pressure groove 15, make sealing block 14 slide outward, then the adjacent sealing block 14 separate, the inside of the fixed sleeve 13 is unobstructed, can continue to carry on the gas delivery filtering work.

[0036] Finally, it should be noted that: in the description of the utility model, it needs to be explained that the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model.

[0037] In the description of the utility model, it also needs to be explained that, unless otherwise specified and limited, the terms "set", "install", "connect", "connect" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0038] The above is only the preferred specific embodiment of the utility model; however, the protection scope of the utility model is not limited to this. Any skilled person familiar with the technology in the art can make equivalent replacement or change according to the technical scheme of the utility model and its improvement concept within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A fume hood for treating hazardous gases, comprising a cabinet body (1), wherein a fan (2) and a first duct (3) are fixedly connected to the top surface of the cabinet body (1) on both sides respectively, a solenoid valve (4) is fixedly connected to one side of the fan (2), a second duct (5) is fixedly connected to one side of the solenoid valve (4), and a support sleeve (6) is centrally disposed on the opposite surfaces of the first duct (3) and the second duct (5), characterized in that: The first conduit (3) and the second conduit (5) are both fixedly connected to a fixing sleeve (13) at one end of the inner side. The fixing sleeve (13) is fixedly connected to a first flange (7) at one end, and a sealing mechanism (8) is provided inside the fixing sleeve (13). The filter element (9) is fixedly connected in the center inside the support sleeve (6), and a connecting cylinder (10) is provided through both ends of the support sleeve (6). The connecting cylinder (10) is fixedly connected to a compression head (11) at one end of the outer side, and a second flange (12) is fixedly connected to the middle part of the connecting cylinder (10). The sealing mechanism (8) includes a set of sealing blocks (14), with a pressure groove (15) on the inner side of the sealing block (14) and a pair of guide rods (16) passing through the outer side of the sealing block (14), with a return spring (17) sleeved on the outer side of the guide rods (16).

2. The fume hood for treating hazardous gases according to claim 1, characterized in that: A hazardous gas detector is fixedly connected to one side of the upper end of the cabinet (1), and the input end of the hazardous gas detector is fixedly connected to the second conduit (5).

3. The fume hood for treating hazardous gases according to claim 1, characterized in that: The two first flanges (7) are respectively adapted to the two second flanges (12), and the connection between the first flanges (7) and the second flanges (12) is threaded with bolts.

4. A fume hood for treating hazardous gases according to claim 1, characterized in that: The connecting cylinder (10) has a threaded ring fixedly connected to one end on one side, and the threaded ring is threadedly connected to the support sleeve (6).

5. A fume hood for treating hazardous gases according to claim 1, characterized in that: The extrusion head (11) is located inside the fixed sleeve (13), and the side of the extrusion head (11) is adapted to the pressure groove (15).

6. A fume hood for treating hazardous gases according to claim 1, characterized in that: The sealing block (14) is slidably connected to the fixing sleeve (13), and the sides of two adjacent sealing blocks (14) are in contact.

7. A fume hood for treating hazardous gases according to claim 1, characterized in that: The outer ends of the guide rod (16) and the return spring (17) are fixedly connected to the inner surface of the fixed sleeve (13), and the other end of the return spring (17) is fixedly connected to the sealing block (14).

Images