Side-suction rectifying and air-uniformizing exhaust hood for dissipation surface with large length-width ratio

Abstract

The utility model relates to the technical field of occupational hazard protection, in particular to a side-suction rectification air-uniformizing exhaust hood for a dissipation surface with a large length-width ratio. The air exhaust unit comprises a shell, an air inlet and an air outlet, wherein an opening is formed in the front end of the shell; the air inlet plate is detachably connected in the opening of the shell, and a plurality of air inlet plate holes are formed in the air inlet plate; the rectifying assembly is detachably connected between the two sides in the shell; an exhaust outlet is formed in the bottom end of the shell, the exhaust pipeline is fixed to the lower surface of the shell, and the exhaust pipeline communicates with the exhaust outlet. The flat and modular design is adopted, the occupied production space is small, the application range is wide, the realizability is high, and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of occupational hazards protection, specifically relates to a side suction rectification even wind exhaust hood for large length-width ratio escape surface. BACKGROUND

[0002] At present, in the industrial production environment, there are a large number of industrial production sites with large length-width ratio pollution gas escape surface, such as electroplating tank, pickling tank liquid surface in electroplating and pickling process. Because the escape area is large, a large amount of escaped pollution gas will pollute the workshop production environment in the process; Corrode the surface of processing parts and equipment facilities; Influence the work efficiency and health of operating personnel, further influence the efficiency of production and processing and the quality of processing parts. Therefore, the control and capture method of pollution gas for industrial production sites with large length-width ratio escape surface has great significance.

[0003] At present, for the above production scene, the commonly used control and capture scheme is to set a tank edge exhaust hood on the side of the escape surface, which is simple, easy to operate and has strong universality. However, 1. The exhaust port wind speed of the traditional tank edge exhaust hood will decrease with the increase of the distance away from the one end of the exhaust duct. When the length-width ratio of the escape surface is large, this trend of wind speed reduction will be more obvious, and this non-uniform inlet wind speed will affect the capture efficiency of the exhaust system and increase the energy consumption required by the exhaust system; 2. In actual production, high-temperature electroplating liquid is sometimes used in electroplating and pickling process, the high-temperature pollution gas evaporates upward and escapes at a relatively fast speed, the cover opening or slit opening of the traditional tank edge exhaust hood is relatively narrow, the capture effect of the vertically escaping pollution gas is poor, and more pollution gas escapes into the production environment; 3. The size of the traditional exhaust hood is large, which occupies more production space and affects the production space layout and production process.

[0004] Based on the above problems or shortcomings of the existing tank edge exhaust hood, the traditional tank edge exhaust hood will affect the control range and effect of pollution gas in actual use, increase the required air volume for controlling pollution gas escape, and further increase the energy consumption required by the exhaust system. UTILITY MODEL CONTENTS

[0005] The present application provides a side suction rectification even wind exhaust hood for large length-width ratio escape surface, which solves the technical problems mentioned in the prior art.

[0006] The technical problems solved by the utility model can be realized by the following technical solutions:

[0007] A side suction rectification even wind exhaust hood for large length-width ratio escape surface, comprising:

[0008] An exhaust unit;

[0009] The exhaust unit comprises:

[0010] a housing, the housing having an opening at a front end thereof;

[0011] an air inlet plate, the air inlet plate being detachably connected in the opening of the housing, the air inlet plate having a plurality of air inlet plate holes formed therein;

[0012] a rectifying assembly, the rectifying assembly being detachably connected between two sides of the housing;

[0013] an air outlet duct, the housing having an air outlet opening at a bottom end thereof, the air outlet duct being fixed to a lower surface of the housing and being in communication with the air outlet opening.

[0014] Further, the housing is composed of a pair of side plates, a rear plate, a bottom plate and a top plate, the pair of side plates being fixed perpendicularly to two sides of the rear plate, the top plate and the bottom plate being fixed perpendicularly to upper and lower ends of the rear plate respectively, the pair of side plates being located at two sides of the bottom plate and the top plate and being fixed to upper and lower ends of the side plates respectively, the air outlet opening being located at a center of the bottom plate, the air inlet plate being detachably connected to front sides of the side plates, the rear plate, the bottom plate and the top plate, the rectifying assembly being detachably connected between the pair of side plates, the rear plate having a same size as the air inlet plate.

[0015] Further, the air outlet units include at least two, the at least two air outlet units being arranged equidistantly in sequence and having a contact surface between adjacent air outlet units.

[0016] Further, the rectifying assembly includes an upper air guide plate, a lower air guide plate and a corner inter-cleaving plate, front ends of the upper air guide plate and the lower air guide plate being detachably connected to front ends between opposite surfaces of the top plate and the bottom plate respectively, two ends of the upper air guide plate and the lower air guide plate being detachably connected to the pair of side plates respectively, the corner inter-cleaving plate being detachably connected between the pair of side plates at two sides thereof, the corner inter-cleaving plate being located between the upper air guide plate and the lower air guide plate and having a spacing between the upper air guide plate and the lower air guide plate respectively, rear ends of the upper air guide plate, the lower air guide plate and the corner inter-cleaving plate being located on a same plane.

[0017] Further, the upper air guide plate has a horizontal plate formed at a rear end thereof, the horizontal plate being detachably connected perpendicularly to the bottom plate at a rear end thereof, the horizontal plate being parallel to the top plate.

[0018] Further, the lower air guide plate has a vertical plate formed at a rear end thereof, the vertical plate being parallel to the rear plate and having a spacing between a top end of the vertical plate and the corner inter-cleaving plate, the spacing between the vertical plate and the corner inter-cleaving plate being smaller than a spacing between the corner inter-cleaving plate and the upper air guide plate.

[0019] Further, the corner inter-cleaving plate includes at least one pair, the pair of corner inter-cleaving plates being detachably connected between the pair of side plates in parallel and having a spacing between the pair of corner inter-cleaving plates.

[0020] Further, the corner intercleft is triangular structure, and the corner intercleft rear end is parallel to the rear plate, the corner intercleft is chamfered away from one corner of the rear plate, and the chamfer radius is 10mm, and the corner intercleft is chamfered at the other two corners, and the chamfer radius is 2mm.

[0021] Further, the side length of the air inlet plate is not less than 300mm, the air inlet plate is arranged with the air inlet plate hole in a circular array, the opening shape is circular, the opening diameter is not less than 6mm, the opening rate is not less than 25%, and the circular array is arranged.

[0022] Further, the side plate width is 100mm, and the air outlet duct diameter is 75mm.

[0023] The beneficial effects of the utility model are:

[0024] 1. The side suction rectification uniform wind exhaust cover for the large length-width ratio fugitive noodles adopts the flat and modular design, occupies the smaller production space, is widely used, can be realized with high realization, and has low cost.

[0025] 2. After the utility model is used, the air speed of the air inlet is uniform, the pollutants are not easy to escape, the large-scale accurate capture and control of the pollutants can be realized, the air volume required by the exhaust system to meet the control demand of the fugitive pollution gas is reduced, the energy consumption of the exhaust system is further reduced, and energy waste is reduced.

[0026] 3. The utility model simultaneously considers the capture and control of the longitudinal pollution gas, so that the pollution gas is not easy to escape in the longitudinal direction, and the control effect of the large length-width ratio pollution gas escape surface is further improved.

[0027] 4. The utility model can arrange multiple exhaust covers side by side for different sizes of pollution gas escape surfaces, so as to realize accurate capture and control of different pollution gas escape surfaces, and has high design and use flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0028] The utility model is further described below in combination with the drawings and examples.

[0029] Fig. 1 It is the structure schematic view of the utility model.

[0030] Fig. 2 It is the sectional view of the utility model.

[0031] Fig. 3 It is the flow trajectory diagram of the utility model.

[0032] In the figure: 1 - shell; 11 - side plate; 12 - back plate; 13 - bottom plate; 14 - top plate; 2 - air inlet plate; 3 - exhaust duct; 4 - upper air deflector; 41 - horizontal plate; 5 - lower air deflector; 51 - vertical plate; 6 - round corner split. DETAILED DESCRIPTION

[0033] Example 1:

[0034] Referring to Figs. 1-3 It is a structure schematic diagram of the utility model embodiment 1, a kind of side suction rectification uniform wind exhaust hood for large length-width ratio escape face, comprising:

[0035] A plurality of exhaust units, a plurality of exhaust units are sequentially equidistantly arranged, and there is contact surface between adjacent exhaust units;

[0036] The exhaust unit includes:

[0037] Shell 1, the shell 1 front end has opening;

[0038] Air inlet plate 2, the air inlet plate 2 is detachably connected in the opening of shell 1, and a plurality of air inlet plate holes are opened on the air inlet plate 2;

[0039] Rectification assembly, the rectification assembly is detachably connected between the two sides in shell 1;

[0040] Exhaust duct 3, the shell 1 bottom end is opened with exhaust port, and the exhaust duct 3 is fixed on the lower surface of shell 1, and exhaust duct 3 is communicated with exhaust port.

[0041] Actual use: exhaust duct 3 is communicated with the exhaust system or negative pressure system of site, when using, exhaust system generates negative pressure in shell 1 by exhaust duct 3, so that air inlet plate 2 generates suction force, and the air in front of air inlet plate 2 is inhaled, gas is inhaled into shell 1 by air inlet plate 2, simultaneously by rectification assembly, and then by exhaust duct 3 into exhaust system.

[0042] By rectification assembly, the inhaled airflow can not produce vortex, and the exhaust efficiency is improved.

[0043] Example 2:

[0044] Referring to Figs. 1-3The difference of the embodiment is that the shell 1 is composed of a pair of side plates 11, a back plate 12, a bottom plate 13 and a top plate 14, the pair of side plates 11 are vertically fixed on both sides of the back plate 12, the top plate 14 and the bottom plate 13 are respectively vertically fixed on the upper and lower ends of the back plate 12, the pair of side plates 11 are located on both sides of the bottom plate 13 and the top plate 14, and the upper and lower ends of the side plates 11 are respectively fixed with both sides of the top plate 14 and the bottom plate 13, the air outlet is located at the center of the bottom plate 13, the air inlet plate 2 is detachably connected to the front side of the side plates 11, the back plate 12, the bottom plate 13 and the top plate 14, the rectifying assembly is detachably connected between the pair of side plates 11, and the back plate 12 is the same size as the air inlet plate 2.

[0045] The side length of the air inlet plate 1 is not less than 300mm, the air inlet plate is arranged with holes in a circular array to form air inlet plate holes, the hole shape is circular, the hole diameter is not less than 6mm, the hole rate is not less than 25%, and the holes are arranged in a circular array.

[0046] The width of the side plate 11 is 100mm, and the diameter of the air outlet duct 3 is 75mm.

[0047] In actual use, the gas enters the shell 1 composed of the side plates 11, the back plate 12, the bottom plate 13 and the top plate 14 through the air inlet plate 2, and flows through the rectifying assembly at the same time, so as to rectify the entering gas and affect the trajectory of the air inlet, so as to make the wind speed uniform.

[0048] Embodiment 3:

[0049] Referring to Fig. 1 The difference of the embodiment is that the air exhaust unit includes at least two, at least two air exhaust units are arranged in sequence and equidistantly, and there is a contact surface between adjacent air exhaust units.

[0050] In actual use, first, the operation position is determined, and according to the space conditions of the site, a plurality of air exhaust units are placed side by side adaptively at the operation position to form an air exhaust group with large length or width, so as to improve the air catching area and realize accurate capture and control of different sizes of pollution gas diffusion area.

[0051] Embodiment 4:

[0052] Referring to Figs. 2-3The difference of the embodiment is that the rectifying assembly comprises the upper air deflector 4, the lower air deflector 5 and the corner inter-cleaving piece 6, the front ends of the upper air deflector 4 and the lower air deflector 5 are respectively detachably connected between the front ends of the opposite faces of the top plate 14 and the bottom plate 13, and the two ends of the upper air deflector 4 and the lower air deflector 5 are respectively detachably connected with a pair of side plates 11, the two sides of the corner inter-cleaving piece 6 are detachably connected between the pair of side plates 11, the corner inter-cleaving piece 6 is located between the upper air deflector 4 and the lower air deflector 5, and the upper air deflector 4 and the lower air deflector 5 respectively have a spacing with the corner inter-cleaving piece 6, and the rear ends of the upper air deflector 4, the lower air deflector 5 and the corner inter-cleaving piece 6 are located on the same plane.

[0053] In actual use, the upper air deflector 4, the lower air deflector 5 and the corner inter-cleaving piece 6 can reduce the resistance of the airflow through the inner cavity of the shell 1, thereby reducing the energy consumption of the exhaust system, and the airflow entering the shell 1 can be reasonably distributed when passing through the corner inter-cleaving piece 6, and problems such as airflow aggregation at a certain position or uneven airflow distribution at each air inlet position do not occur.

[0054] The upper air deflector 4 can prevent vortexes from being formed at the upper part of the shell 1, thereby reducing the influence on the exhaust.

[0055] The lower air deflector 5 can prevent the problem of uneven flow rate caused by being too close to the exhaust duct 3.

[0056] The front end of the upper air deflector 4 is detachably connected with the top plate 14, and the other end is arranged obliquely downward, and the included angle between the upper air deflector 4 and the top plate is less than 90 degrees.

[0057] The front end of the lower air deflector 5 is detachably connected with the bottom plate 13, and the other end is arranged obliquely upward, and the included angle between the lower air deflector 5 and the bottom plate 13 is less than 90 degrees.

[0058] Meanwhile, the inclined upper air deflector 4 and the lower air deflector 5 can increase the wind catching area.

[0059] Embodiment 5:

[0060] Referring to Fig. 2 The difference of the embodiment is that the upper air deflector 4 is provided with a horizontal plate 41 at the rear end, the rear end of the horizontal plate 41 is detachably connected with the bottom plate 13 perpendicularly, and the horizontal plate 41 is parallel to the top plate 14.

[0061] In actual use, the upper air deflector 4 is connected with the rear plate 12 through the horizontal plate 41, so that vortexes are not formed at the upper corner of the shell 1, thereby further improving the effect of uniform flow rate.

[0062] Embodiment 6:

[0063] Referring to Fig. 2The difference of the embodiment is that the lower air deflector 5 is provided with a vertical plate 42 at the rear end, the vertical plate 42 is parallel to the rear plate 12, and the vertical plate 42 has a spacing between the top end and the circular corner split 6, and the spacing between the vertical plate 42 and the circular corner split 6 is smaller than the spacing between the circular corner split 6 and the upper air deflector 4.

[0064] In actual use, the vertical plate 42 is parallel to the rear plate, and the vertical plate 42 is also parallel to the air inlet plate 2, and the vertical plate is extended upward through the lower air deflector 5, further preventing the air inlet amount near the one end of the air exhaust duct from being too large, thereby causing the air inlet speed to be uneven.

[0065] Embodiment 7:

[0066] Referring to Fig. 2 The difference of the embodiment is that the circular corner split 6 has at least one pair, and the pair of circular corner splits 6 are detachably connected between the pair of side plates 11, and the pair of circular corner splits 6 have a spacing therebetween.

[0067] The circular corner split 6 is a triangular structure, and the rear end of the circular corner split 6 is parallel to the rear plate 12, one corner of the circular corner split 6 away from the rear plate is chamfered, and the chamfer radius is 10 mm, and the other two corners of the circular corner split 6 are chamfered, and the chamfer radius is 2 mm.

[0068] In actual use, when the air flow passes through the circular corner split 6, the entering air flow is reasonably distributed by the circular corner split 6 arranged at different spacings, thereby avoiding the situation that the air exhaust port is too long, causing the air speed of the air exhaust duct to be uneven, and at the same time, the three edges of the circular corner split 6 are designed to be chamfered, one corner near the air inlet plate 2 has a chamfer radius of 10 mm, and the other two corners have a chamfer radius of 2 mm, thereby reducing the resistance of the air flow passing through the inner cavity of the air exhaust cover shell 1, and reducing the energy consumption of the air exhaust system.

[0069] When the size requirement of the shell 1 is large, the number of the circular corner splits 6 in the shell 1 is increased, the air sucked by the air inlet plate 2 is controlled, the air speed at each part of the air exhaust port is uniform and reasonable, the noise is avoided to be too large, the escape of the polluted gas is effectively controlled, and the energy consumption of the air exhaust system is reduced.

[0070] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model, and all of them are within the protection range of the technology.

Claims

1. A side-suction rectifying uniform air exhaust cover for large aspect ratio diffusers, characterized in that, The utility model relates to a kind of exhaust units, including: Exhaust unit; The exhaust unit includes: Shell (1), the shell (1) front end has opening; Air inlet plate (2), the air inlet plate (2) is detachably connected in the opening of shell (1), and the air inlet plate (2) is opened with several air inlet plate holes; Rectifier assembly, the rectifier assembly is detachably connected between two sides in shell (1); Exhaust duct (3), the shell (1) bottom end is opened with exhaust port, and the exhaust duct (3) is fixed in the lower surface of shell (1), and exhaust duct (3) is communicated with exhaust port.

2. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 1, wherein, The shell (1) is composed of a pair of side plates (11), back plate (12), bottom plate (13) and top plate (14), a pair of side plates (11) are vertically fixed on the two sides of back plate (12), and top plate (14) and bottom plate (13) are vertically fixed on the upper and lower ends of back plate (12) respectively, a pair of side plates (11) are located on the two sides of bottom plate (13) and top plate (14), and the upper and lower ends of side plate (11) are fixed with the two sides of top plate (14) and bottom plate (13) respectively, the exhaust port is located at the center of bottom plate (13), the air inlet plate (2) is detachably connected on the front side of side plate (11), back plate (12), bottom plate (13) and top plate (14), the rectifier assembly is detachably connected between a pair of side plates (11), and the back plate (12) is same in size with the air inlet plate (2).

3. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 1, wherein, The exhaust unit includes at least two, and at least two exhaust units are sequentially equidistantly arranged, and have contact surfaces between adjacent exhaust units.

4. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 2, wherein, The rectifier assembly includes upper air deflector (4), lower air deflector (5) and round corner interchink (6), the front end of upper air deflector (4) and lower air deflector (5) is detachably connected between the front end of opposite surface of top plate (14) and bottom plate (13) respectively, and the two ends of upper air deflector (4) and lower air deflector (5) are detachably connected with a pair of side plates (11) respectively, the two sides of round corner interchink (6) are detachably connected between a pair of side plates (11), and the round corner interchink (6) is located between upper air deflector (4) and lower air deflector (5), and upper air deflector (4) and lower air deflector (5) have spacing with round corner interchink (6) respectively, the rear end of upper air deflector (4), lower air deflector (5) and round corner interchink (6) is located on the same plane.

5. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 4, wherein, The rear end of upper air deflector (4) is opened with horizontal plate (41), the rear end of horizontal plate (41) is detachably connected with bottom plate (13) vertically, and horizontal plate (41) is parallel with top plate (14).

6. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 4, wherein, The rear end of lower air deflector (5) is opened with vertical plate (42), the vertical plate (42) is parallel with back plate (12), and the vertical plate (42) has spacing with the top end of round corner interchink (6), and the spacing between vertical plate (42) and round corner interchink (6) is less than the spacing between round corner interchink (6) and upper air deflector (4).

7. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 4, wherein, The round corner interchink (6) has at least a pair, and a pair of round corner interchink (6) is detachably connected between a pair of side plates (11) in parallel, and a pair of round corner interchink (6) has spacing.

8. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 7, wherein, The intercorner chamfer (6) is triangular in structure, the rear end of the intercorner chamfer (6) is parallel to the rear plate (12), one corner of the intercorner chamfer (6) away from the rear plate is chamfered with a chamfer radius of 10 mm, and the other two corners of the intercorner chamfer (6) are chamfered with a chamfer radius of 2 mm.

9. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 1, wherein, The side length of the air inlet plate (2) is not less than 300 mm, the air inlet plate is provided with air inlet plate holes formed by circular array arranged openings, the opening shape is circular, the opening diameter is not less than 6 mm, the opening rate is not less than 25%, and the circular array is arranged.

10. A side draft rectifier uniform air distribution exhaust hood for large aspect ratio plumes according to claim 2, wherein, The width of the side plate (11) is 100 mm, and the diameter of the air outlet pipeline (3) is 75 mm.

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