CN212408989U

CN212408989U - Explosion-proof type A-level laminar flow cover

Info

Publication number: CN212408989U
Application number: CN202021246652.0U
Authority: CN
Inventors: 朱峰
Original assignee: Zhongke Shengjie Shenzhen Science And Technology Group Co ltd
Current assignee: Zhongke Shengjie Shenzhen Science And Technology Group Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-26
Anticipated expiration: 2030-06-29

Abstract

An explosion-proof type A-level laminar flow cover relates to the technical field of laminar flow covers. It includes: a box body; the static pressure box is arranged in the box body; the explosion-proof fan is fixed on the static pressure box; and, the filter to the said explosion-proof blower; at least one side surface of the box body is an air inlet surface; the bottom surface of the box body is an air outlet surface; one of the air inlet surfaces is provided with a PAO detection port, a DOP injection port and a pressure difference meter; the flow equalizing membrane is arranged between the air inlet surface and the filter; the filter includes: primary filters and high efficiency filters. Adopt above-mentioned technical scheme, have explosion-proof effect outstanding, the filtration efficiency is high, simple structure's advantage.

Description

Explosion-proof type A-level laminar flow cover

Technical Field

The utility model relates to a laminar flow cover technical field, concretely relates to explosion-proof type A level laminar flow cover.

Background

Laminar flow hoods are one of the devices that can shield operators from the product and their main purpose is to avoid product contamination. The air drawn from the cleanroom is then filtered vertically through the operating area by HEPA using a fan mounted in the overhead plenum to provide ISO 5 (class 100) unidirectional flow air to the critical area. The exhaust gases are discharged from below and returned to the clean room area. The air filter mainly comprises a box body, a fan, a high-efficiency air filter, a damping layer, a lamp and the like. The traditional laminar flow hood has poor explosion-proof effect, low filtering efficiency and complex structure, and needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide an explosion-proof type A level laminar flow cover, have that explosion-proof effect is outstanding, filtration efficiency is high, simple structure's advantage.

In order to achieve the above object, the utility model adopts the following technical scheme: an explosion proof class a laminar flow hood comprising: a box body; the static pressure box is arranged in the box body; the explosion-proof fan is fixed on the static pressure box; and, the filter to the said explosion-proof blower; at least one side surface of the box body is an air inlet surface; the bottom surface of the box body is an air outlet surface; one of the air inlet surfaces is provided with a PAO detection port, a DOP injection port and a pressure difference meter; the flow equalizing membrane is arranged between the air inlet surface and the filter; the filter includes: primary filters and high efficiency filters.

The utility model discloses further set up, the three side of box is the air inlet face.

The utility model discloses further set up, high efficiency filter is: the reverse flange flume is sealed type without a clapboard.

The utility model discloses further set up, explosion-proof fan is explosion-proof DKT2.5A9-60.

The utility model discloses further set up, the differential pressure table is Duwei differential pressure table (0-500 Pa).

The utility model discloses further set up, the specification of box is 1300mm 800mm 850 mm.

The utility model discloses further set up, the box is the molding of bending of 1.2 mm's sus304 wire drawing corrosion resistant plate.

After the technical scheme is adopted, the utility model discloses beneficial effect does:

1. in the utility model, the explosion-proof fan is arranged, so that the explosion-proof effect of the laminar flow hood is improved; the primary filter, the high-efficiency filter and the flow-equalizing membrane are arranged, so that the filtering efficiency and the filtering effect are effectively improved; the pressure difference meter is arranged, so that the forehead pressure difference in the box body can be monitored in real time, and correction and alarm can be performed in time; the structure is also simpler overall.

2. The utility model discloses in, the three side of box is the air inlet face, and side return air has improved intake and air inlet speed by a wide margin.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2;

fig. 4 is a front view of the present invention;

fig. 5 is a side view of the present invention.

Description of reference numerals: 1. a box body; 2. a static pressure box; 3. an explosion-proof fan; 4. an air inlet surface; 5. an air outlet surface; 6. a PAO detection port; 7. a DOP injection port; 8. a differential pressure gauge; 9. flow equalizing membrane; 10. a high-efficiency filter.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment as required without making a contribution, but all the embodiments are protected by the patent law within the scope of the claims of the present invention.

The present embodiment relates to an explosion-proof type class a laminar flow cover, as shown in fig. 1 to 5, including: a box body 1; the static pressure box 2 is arranged in the box body 1; the explosion-proof fan 3 is fixed on the static pressure box 2; and, the filter to the explosion-proof blower 3; at least one side surface of the box body 1 is an air inlet surface 4; the bottom surface of the box body 1 is an air outlet surface 5; one of the air inlet surfaces 4 is provided with a PAO detection port 6, a DOP injection port 7 and a pressure difference meter 8; the flow equalizing membrane 9 is arranged between the air inlet surface 4 and the filter; the filter includes: primary filters and high efficiency filters 10. Air is sucked into the static pressure box 2 from the air inlet surface 4 by the explosion-proof fan 3, filtered by the filter, passes through the flow equalizing membrane 9 and finally flows out from the air outlet surface 5; the primary filter and the high-efficiency filter 10 are used for double filtration, the filtering effect is improved, the flow equalizing membrane 9 can enable the outflow air flow to be more uniform, and the cleanliness of the air flow is effectively improved. The pressure difference meter 8 is used for monitoring the pressure difference of the upper side and the lower side of the high-efficiency filter 10, and is convenient for timely correction or alarming. And explosion-proof fan 3 compares ordinary fan, and its explosion-proof performance is more outstanding. The structure is also simpler on the whole.

Specifically, the primary filter (not shown) is a primary cylindrical filter bag sleeved at the air outlet of the explosion-proof fan 3.

The three side surfaces of the box body 1 are air inlet surfaces 4, air is returned from the side surfaces, and the air inlet amount and the air inlet speed are greatly improved.

An anemometer (not shown) is arranged between the high-efficiency filter 10 and the flow equalizing membrane 9, monitoring data are directly connected to a PLC input point, and correction parameters are set in a control system, so that the conversion between the actual monitoring data of the anemometer and the wind speed above an operation surface is realized.

In the embodiment, each group is provided with two explosion-proof electric boxes (one is an explosion-proof speed regulation electric box, and the other is an explosion-proof control electric box), the start and stop operation of each group of explosion-proof A-level laminar flow covers can be controlled, the stepless speed regulation is carried out on each group of explosion-proof A-level laminar flow covers through a frequency converter, and the explosion-proof control electric boxes are arranged on the color steel plate interlayers; the explosion-proof speed regulating electric box is arranged in the wall body, the outer surface of the explosion-proof speed regulating electric box is provided with an explosion-proof start-stop button, and the speed regulating plate is arranged in the explosion-proof speed regulating electric box; the internal circuit is wired and is provided with accessories such as an explosion-proof tube, an explosion-proof junction box and the like.

In this embodiment, the high efficiency filter 10 is: the filter has a filtering grade of H14, and two ends of the filter are sealed by plastic (such as film, glue, etc.); the explosion-proof fan 3 is explosion-proof DKT2.5A9-60; pressure difference Table 8 is a Duwei pressure difference Table (0-500 Pa).

The box body 1 is formed by bending a 1.2mm suss 304 wiredrawing stainless steel plate, the wiredrawing directions of four sides of the box body 1 are uniform, and the specification is 1300mm x 800mm x 850 mm.

The working principle of the utility model is as follows: the explosion-proof fan 3 is arranged, so that the explosion-proof effect of the laminar flow hood is improved; the primary filter, the high-efficiency filter 10 and the flow-equalizing membrane 9 are arranged, so that the filtering efficiency and the filtering effect are effectively improved; the pressure difference meter 8 can monitor the forehead pressure difference in the box body 1 in real time, so that correction and alarm can be performed in time; the structure is also simpler overall. .

The above description is only for the purpose of illustration and not limitation, and other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention should be covered by the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. An explosion-proof class a laminar flow hood, comprising: a box body (1); the static pressure box (2) is arranged in the box body (1); the explosion-proof fan (3) is fixed on the static pressure box (2); and a filter facing the explosion-proof fan (3); at least one side surface of the box body (1) is an air inlet surface (4); the bottom surface of the box body (1) is an air outlet surface (5); one of the air inlet surfaces (4) is provided with a PAO detection port (6), a DOP injection port (7) and a pressure difference meter (8); a flow equalizing membrane (9) arranged between the air inlet surface (4) and the filter; the filter includes: a primary filter and a high efficiency filter (10).

2. Explosion-proof class A laminar flow hood according to claim 1, characterized in that the three sides of the box (1) are air intake surfaces (4).

3. Explosion proof class a laminar flow hood according to claim 1, characterized in that the high efficiency filter (10) is: the reverse flange flume is sealed type without a clapboard.

4. Explosion-proof class a laminar flow hood according to claim 1, characterized in that said explosion-proof blower (3) is explosion-proof DKT2.5A9-60.

5. Explosion proof class a laminar flow hood according to claim 1, characterized in that the pressure differential gauge (8) is a Duwei pressure differential gauge (0-500 Pa).

6. Explosion-proof class a laminar flow hood according to claim 1, characterized in that the box (1) has a format of 1300mm x 800mm x 850 mm.

7. An explosion-proof class A laminar flow hood according to claim 1, characterized in that the box body (1) is formed by bending a 1.2mm sus304 drawn stainless steel plate.