Air draft device for chemical liquid workshop

Abstract

The utility model relates to the field of air draft devices, in particular to an air draft device for a chemical liquid workshop. The exhaust device comprises an air inlet pipe and an exhaust pipe located above the air inlet pipe, and a noise reduction assembly is arranged between the air inlet pipe and the exhaust pipe. The noise reduction device has the advantages that the noise reduction assembly is additionally arranged, noise reduction can be carried out on the machine during air draft, the situation that the working efficiency and body health of workers are seriously affected due to the fact that the sound of the machine is too loud when the device works is avoided, and therefore the working efficiency and body health of the workers are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air extraction device, concretely to an air extraction device for chemical liquid workshop. BACKGROUND

[0002] In the chemical production process, due to chemical reaction can produce a large number of toxic, harmful gas, these gases not only cause the threat to human health, also can cause damage to production equipment and production environment, in order to guarantee the health of workers and production safety, air extraction device becomes one of the indispensable equipment of chemical production workshop.

[0003] The existing air extraction device is various, mainly including axial flow fan, centrifugal fan and exhaust fan etc., these devices pass through the air in workshop is extracted, is discharged to the outdoor, to reach the purpose of purifying indoor air, however, these traditional air extraction device generally exists loud noise, is difficult to meet the high standard requirement of modern chemical production. SUMMARY

[0004] The utility model wants to solve the technical problem for: these traditional air extraction device generally exists loud noise, is difficult to meet the modern chemical production problem.

[0005] To solve above problem, the utility model adopts the technical scheme for: including intake pipe and the exhaust pipe located above the intake pipe, be provided with the noise reduction subassembly between the intake pipe and exhaust pipe;

[0006] The noise reduction subassembly includes the fan fixedly arranged between the intake pipe and exhaust pipe, the specific of fan is variable frequency fan, the top of fan is fixedly arranged with the sound absorbing board, the sound absorbing board is located in the exhaust pipe, the sound absorbing board is specifically impedance composite muffler

[0007] The utility model has the advantages of: through increase the noise reduction subassembly, can carry out the noise reduction to machine when carrying out air extraction, avoid the machine sound when the equipment works too big seriously influence the work efficiency and health of workers, to ensure the work efficiency and health of workers.

[0008] Further, the top end fixedly arranged with two guide seats in the intake pipe, the opposite side of two guide seats is slidably provided with a guide strip, the filter plate is fixedly arranged between two guide strips, the right side of intake pipe is provided with the installation slot matched with filter plate, the right end of filter plate is fixedly arranged with the mounting plate, the filter plate is specifically multilayer composite filter material.

[0009] The utility model has the advantages of: through setting up filter plate, can filter the air extraction work, prevent dust from entering the air extraction machine and cause damage problem, to improve the protection of air extraction machine.

[0010] Further, the air inlet pipe is provided with a mounting seat at the front end, a plurality of gears are rotatably arranged in the mounting seat, the rotation shafts of the gears are connected with the rotation shafts of the sealing plates, two mounting blocks are fixedly arranged in the mounting seat, a threaded rod is rotatably arranged between the two mounting blocks, a threaded seat is threadedly connected with the surface of the threaded rod, a toothed plate is fixedly arranged at the bottom of the threaded seat, the toothed plate is engaged with the gears, and the threaded rod is driven by a motor.

[0011] Further, the guide seat, the guide strip and the air inlet pipe are connected through a plurality of connecting bolts.

[0012] The utility model provides a kind of chemical liquid workshop is used to extract air device. With following beneficial effects:

[0013] 1. By increasing the noise reduction component, in turn, can carry out noise reduction to machine when extracting air, avoid the machine sound when equipment works too large seriously influence the work efficiency and health of worker, so as to ensure the work efficiency and health of worker.

[0014] (2) by setting filter plate, in turn, can filter to extract air this work, prevent dust from entering into extractor fan and cause its damage problem, to improve the protection to extractor fan. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the appearance display drawing of the utility model;

[0016] Figure 2 It is the display drawing of noise reduction component in the utility model;

[0017] Figure 3 It is the display drawing of air inlet pipe in the utility model;

[0018] Figure 4 It is the structure schematic view of mounting seat in the utility model;

[0019] Figure 5 It is the structure schematic view of air inlet pipe in the utility model.

[0020] The text annotation shown in the figure represents: 1, air inlet pipe; 2, exhaust pipe; 3, noise reduction component; 11, mounting seat; 12, filter plate; 13, mounting plate; 14, connecting bolt; 15, sealing plate; 16, guide seat; 17, guide strip; 31, fan; 32, sound-absorbing plate; 111, gear; 112, mounting block; 113, threaded rod; 114, threaded seat; 115, toothed plate. DETAILED DESCRIPTION

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0022] Example:

[0023] like Figures 1-5 As shown, a ventilation device for a chemical liquid workshop includes an air inlet pipe 1 and an exhaust pipe 2 located above the air inlet pipe 1, with a noise reduction component 3 installed between the air inlet pipe 1 and the exhaust pipe 2.

[0024] The noise reduction component 3 includes a fan 31 fixedly installed between the intake pipe 1 and the exhaust pipe 2. The fan 31 is a variable frequency fan. A silencer 32 is fixedly installed on the top of the fan 31. The silencer 32 is located inside the exhaust pipe 2. The silencer 32 is an impedance composite silencer.

[0025] By selecting a centrifugal fan of model LF-A500 for fan 31, with a maximum air volume of 5000m³ / h and a noise level not exceeding 45dB, and selecting an impedance composite silencer of model XS-800 for sound-absorbing plate 32, the required level of noise reduction can be achieved.

[0026] Two guide seats 16 are fixedly installed at the top of the air intake pipe 1. Guide strips 17 are slidably installed on the opposite sides of the two guide seats 16. A filter plate 12 is fixedly installed between the two guide strips 17. An installation groove for the filter plate 12 is opened on the right side of the air intake pipe 1. An installation plate 13 is fixedly installed on the right end of the filter plate 12. The filter plate 12 is specifically a multi-layer composite filter material.

[0027] The filter plate 12 uses HEPA high-efficiency filter media with a filtration efficiency of 99.97%, so it can be filtered during use.

[0028] Multiple sealing plates 15 rotate inside the intake pipe 1. A mounting base 11 is fixedly installed at the front end of the intake pipe 1. Multiple gears 111 are rotatably installed inside the mounting base 11. The rotating shaft of the gears 111 is connected to the rotating shaft of the sealing plates 15. Two mounting blocks 112 are fixedly installed inside the mounting base 11. A threaded rod 113 is rotatably installed between the two mounting blocks 112. A threaded seat 114 is threadedly connected to the surface of the threaded rod 113. A toothed plate 115 is fixedly installed at the bottom of the threaded seat 114. The toothed plate 115 meshes with the multiple gears 111. The threaded rod 113 is driven by a motor.

[0029] The guide seat 16, guide strip 17 and air intake pipe 1 are connected by multiple connecting bolts 14.

[0030] Working principle: by selecting the model of LF-A500 centrifugal fan 31, the maximum air volume can reach 5000m³ / h, the noise is not more than 45dB, the sound absorbing plate 32 selects the impedance composite muffler with model XS-800, and then the required noise reduction degree can be reached; the filter plate 12 adopts HEPA high efficiency filter material, the filtration efficiency reaches 99.97%, and then during use, it can be filtered through this part.

[0031] It should be noted that in this paper, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. The principle and implementation of the present application are described by specific examples in this paper, and the above examples are only used to help understand the method and core idea of the present application. The above is only the preferred embodiment of the present application, it should be pointed out that due to the limited expression of the text, there are objectively infinite specific structures, for ordinary skilled persons in the art, without departing from the principle of the present application, a number of improvements, refinements or changes can be made, and the above technical features can be combined in a proper way; these improvements, refinements, changes or combinations, or without improvement, the concept and technical scheme of the present application are directly applied to other occasions, which should be regarded as the protection scope of the present application.

Claims

1. A ventilation device for a chemical liquid workshop, characterized in that: It includes an intake pipe (1) and an exhaust pipe (2) located above the intake pipe (1), and a noise reduction component (3) is provided between the intake pipe (1) and the exhaust pipe (2). The noise reduction component (3) includes a fan (31) fixedly installed between the air intake pipe (1) and the exhaust pipe (2). The fan (31) is specifically a variable frequency fan. A silencer plate (32) is fixedly installed on the top of the fan (31). The silencer plate (32) is located inside the exhaust pipe (2). The silencer plate (32) is specifically an impedance composite silencer.

2. The exhaust system for a chemical liquid workshop according to claim 1, characterized in that: Two guide seats (16) are fixedly installed at the top of the air intake pipe (1). Guide strips (17) are slidably installed on the opposite sides of the two guide seats (16). A filter plate (12) is fixedly installed between the two guide strips (17). An installation groove for the filter plate (12) is opened on the right side of the air intake pipe (1). An installation plate (13) is fixedly installed on the right end of the filter plate (12). The filter plate (12) is specifically a multi-layer composite filter material.

3. The exhaust system for a chemical liquid workshop according to claim 2, characterized in that: Multiple sealing plates (15) rotate inside the air intake pipe (1). A mounting base (11) is fixedly provided at the front end of the air intake pipe (1). Multiple gears (111) are rotatably provided inside the mounting base (11). The shaft of the gears (111) is connected to the shaft of the sealing plate (15). Two mounting blocks (112) are fixedly provided inside the mounting base (11). A threaded rod (113) is rotatably provided between the two mounting blocks (112). A threaded seat (114) is threadedly connected to the surface of the threaded rod (113). A toothed plate (115) is fixedly provided at the bottom of the threaded seat (114). The toothed plate (115) meshes with the multiple gears (111). The threaded rod (113) is driven by a motor.

4. The exhaust system for a chemical liquid workshop according to claim 3, characterized in that: The guide seat (16), guide strip (17) and air intake pipe (1) are connected by multiple connecting bolts (14).

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