CN215002094U - Prevent leaking negative pressure laminar flow cover - Google Patents
Prevent leaking negative pressure laminar flow cover Download PDFInfo
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- CN215002094U CN215002094U CN202120646873.5U CN202120646873U CN215002094U CN 215002094 U CN215002094 U CN 215002094U CN 202120646873 U CN202120646873 U CN 202120646873U CN 215002094 U CN215002094 U CN 215002094U
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- static pressure
- pressure box
- laminar flow
- efficiency filter
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Abstract
The utility model discloses a prevent leaking negative pressure laminar flow cover belongs to air purification equipment technical field. The anti-leakage negative pressure laminar flow hood comprises a static pressure box and a high-efficiency filter, wherein the high-efficiency filter is fixed in the static pressure box; a limiting block for positioning the high-efficiency filter is arranged in the static pressure box, and the upper end part of the high-efficiency filter is in sealing butt joint with the inner wall of the static pressure box; the bottom of the side face of the static pressure box is connected with a bending piece in a sealing mode, the bending edge of the bending piece is inserted into jelly glue of a liquid tank of the efficient filter, the efficient filter is fixed in the static pressure box through a connecting piece in the middle of the bending piece, and a sealing space is formed between the side face of the efficient filter and the static pressure box. This laminar flow cover utilizes negative pressure seal structure to improve sealed effect, effectively reduces and leaks the risk, and the high efficiency filter's of being convenient for quick installation uses air conditioner wind cabinet air supply, does not influence the air current flow pattern of toilet, has effectively reduced fan calorific capacity and noise.
Description
Technical Field
The utility model relates to an air purification equipment technical field, concretely relates to prevent leaking negative pressure laminar flow cover.
Background
With the development of the Chinese pharmaceutical industry and the continuous promotion of GMP regulations, the requirements of a pharmaceutical enterprise on sterile production are stricter, but because the manufacturing cost and the operating cost of a class A clean room are overhigh, the class A cleanliness required by key stations is generally realized by locally arranging a laminar flow cover in a class B or C clean room and the like in the pharmaceutical industry, so that the high manufacturing cost and the operating cost are avoided, and the requirements of the production process can be met.
The laminar flow hood is an air purification unit which can provide local clean environment, can be flexibly installed above a process point needing high cleanliness, and can be used singly or combined into a strip-shaped clean area. The laminar flow cover forms a uniform flow layer after air passes through the high-efficiency filter at a certain ground wind speed, so that the clean air is in a vertical unidirectional flow, and the cleanliness meeting the process requirement in a working area is ensured.
At present, the FFU laminar flow system is generally adopted in the pharmaceutical industry to realize vertical one-way flow. The FFU (fan Filter Unit) is a fan filtering unit, and the fan filtering unit with a proper size can be selected according to the required laminar flow area and is integrally spliced and assembled. The conventional FFU laminar flow system is generally sealed by a flume keel and jelly glue, and a knife edge of a high-efficiency filter is inserted into the jelly glue in the flume keel to ensure complete sealing; the liquid groove keel and the color steel plate are also sealed by jelly glue. However, the sealing method has the following defects: 1. the seam probably exists at junction and fossil fragments and various steel sheet junction between cistern fossil fragments and the edge of a knife, and liquid jelly glue can't be filled, and the high efficiency filter upper reaches include with various steel sheet sealed space be the malleation state, have the risk of leaking. 2. When the high-efficiency filter is installed, the knife edge is not inserted into the middle position of the keel of the liquid tank due to position deviation, so that the knife edge is close to the edge of the liquid tank, complete sealing cannot be formed, and leakage is easily caused. 3. After long-term use, the efficient filter is troublesome to replace, jelly glue in the liquid groove keel needs to be cleaned, new jelly glue is poured and stands for 24 hours, and the efficient filter is installed after the jelly glue is solidified, so that the cost is high, and the consumed time is long.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a prevent leaking negative pressure laminar flow cover, this laminar flow cover utilizes negative pressure seal structure to improve sealed effect, effectively reduces the leakage risk, and the high efficiency filter's of being convenient for quick installation uses the air conditioner wind cabinet air supply, does not influence the air current flow pattern in toilet, has effectively reduced the fan and has calorific capacity and noise.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a leak-proof, negative-pressure, laminar flow hood comprising a plenum box and a high-efficiency filter disposed within the plenum box; a limiting block for positioning the high-efficiency filter is arranged in the static pressure box, and the upper end part of the high-efficiency filter is in sealing butt joint with the inner wall of the static pressure box; the bottom of the side face of the static pressure box is connected with a bending piece in a sealing mode, the bending edge of the bending piece is inserted into jelly glue of a liquid tank of the efficient filter, the efficient filter is installed in the static pressure box through a connecting piece in the middle of the bending piece, and a sealing space is formed between the side face of the efficient filter and the static pressure box.
As a preferred embodiment of the present invention, a hose connector is provided on the static pressure tank, and the hose connector is communicated with the sealed space.
In a preferred embodiment of the present invention, an air pipe for connecting an air-conditioning air cabinet is connected to the upper end of the plenum box.
As the preferred embodiment of the utility model, pass through sealing washer sealing connection between the upper end of high efficiency filter and the static pressure incasement wall.
As a preferred embodiment of the present invention, the upper end portion of the plenum box is provided with a gas pipe joint, which communicates with the interior of the plenum box.
In a preferred embodiment of the present invention, the upper end of the high efficiency filter is hermetically connected to a fiber filter paper.
As a preferred embodiment of the present invention, the bending member is provided with a detection port, and the detection port is communicated with the interior of the plenum chamber through a connection pipe; the bending piece is provided with a PAO (polyamide-imide) filling opening, and a smoke generating pipe is arranged inside the static pressure box; the PAO injection port is communicated with the smoke generating pipe through a connecting pipe.
Furthermore, the static pressure box is hermetically connected with the connecting pipe and the bent part through full welding.
As the preferred embodiment of the present invention, the upper end of the static pressure box is provided with an angle steel, which is screwed with the color steel plate.
As the utility model discloses preferred embodiment, the connecting piece is connecting rod and screw rod, the connecting rod sets up high efficiency filter's below and through the screw rod with the connection can be dismantled in the middle part of bending.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the negative pressure laminar flow hood provided by the utility model can realize the rapid positioning and the convenient centering of the high efficiency filter by arranging the limiting block in the static pressure box, and the high efficiency filter is prevented from being deviated during the installation, so that the bending edge of the bending piece is effectively ensured to be inserted into the central position of the liquid groove, thereby ensuring the complete sealing and avoiding the leakage; can dismantle with the piece of bending through the connecting piece and be connected, the dismouting of easy high efficiency filter is convenient for change. The utility model can connect the hose joint and the return air channel through the hose, so that a negative pressure sealing structure is formed between the side wall of the high-efficiency filter and the static pressure box, and the leakage risk is reduced; connect air conditioner wind cabinet through the tuber pipe and supply air, not only can effectively reduce fan quantity, improve the fan and generate heat and the noise problem, can avoid moreover getting wind and influence the clean district air current flow pattern of B level from clean district. In addition, the upstream sealing of the high-efficiency filter adopts fiber filter paper for sealing, and compared with rubber sealing, the high-efficiency filter has better oxidation resistance and corrosion resistance, and is suitable for spaces or occasions needing frequent disinfection.
Drawings
Fig. 1 is a front view of a leakage-proof negative pressure laminar flow hood according to the present invention;
fig. 2 is a side view of the leakage-proof negative pressure laminar flow hood of the present invention;
FIG. 3 is an enlarged view of the portion A of FIG. 2 according to the present invention;
fig. 4 is a top view of the leakage-proof negative pressure laminar flow hood according to the present invention after the air pipe is removed;
the reference numbers illustrate: 1. a static pressure box; 2. a high efficiency filter; 21. a liquid bath; 3. bending a piece; 4. a limiting block; 5. a seal ring; 6. a connecting rod; 7. a screw; 8. a hose connector; 9. an air duct; 10. a smoke generating pipe; 11. a gas pipe joint; 12. a detection port; 13. a PAO injection port; 14. fiber filter paper; 15. angle steel; 16. color steel plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-4, the utility model provides a prevent leaking negative pressure laminar flow cover includes static pressure case 1, high efficiency filter 2 and bends 3, and high efficiency filter 2 is the cistern 21 filter, and high efficiency filter 2 fixes inside the downside of static pressure case 1, bends 3 and is used for connecting high efficiency filter 2 and static pressure case 1. At least two limiting blocks 4 for positioning the high-efficiency filter 2 are arranged on the inner wall of the middle part of the static pressure box 1, and the upper end part of the high-efficiency filter 2 is in sealing butt joint with the inner wall of the static pressure box 1 and is arranged between the two limiting blocks 4; preferably, the upper end part of the high-efficiency filter 2 is hermetically connected with the inner wall of the static pressure box 1 through a sealing ring 5, so that the sealing performance is further improved. This stopper 4 has the locate function to high efficiency filter 2's location, can realize high efficiency filter 2's quick location, the centering of being convenient for, high efficiency filter 2 squints when avoiding the installation, effectively guarantees the limit of bending of 3 and inserts the central position of cistern 21 to guaranteed to ensure complete sealed, avoid causing the leakage. The bending piece 3 is arranged at the bottom of the side surface of the static pressure box 1 and is connected with the high-efficiency filter 2 and the static pressure box 1 in a sealing way. Specifically, the bending piece 3 is Z-shaped, and two bending edges with opposite directions are vertically arranged at two ends of the bending piece, wherein one bending edge is inserted into the jelly glue in the liquid tank 21 of the high-efficiency filter 2, and the other bending edge is hermetically connected with the outer wall of the static pressure box 1 in a manner of full-length welding and the like. The middle part of the bending piece 3 is detachably provided with the high-efficiency filter 2 in the static pressure box 1 through the connecting piece, so that a sealing space is formed between the side surface of the high-efficiency filter 2 and the static pressure box 1, the high-efficiency filter 2 is easy to disassemble and assemble, and the replacement is convenient. The connecting piece is a common connecting piece, preferably, the connecting piece is a connecting rod 6 and a screw 7, the connecting rod 6 is arranged below the high-efficiency filter 2 and used for clamping the high-efficiency filter 2 in the static pressure box 1, and two ends of the connecting rod 6 are detachably connected with the middle part of the bending piece 3 through the screw 7 respectively.
Further, a hose connector 8 is arranged on the static pressure box 1, the hose connector 8 is communicated with the sealed space, the end portion of the hose connector 8 is communicated with the negative pressure air return channel through a hose, so that the outside of the liquid tank 21 of the high-efficiency filter 2 is always kept in a negative pressure state, and even if the upper end portion of the high-efficiency filter 2 leaks, the leaked air flow can be drawn away through the hose connector 8 connected into the negative pressure air return channel, and the leakage is avoided.
The upper end of static pressure case 1 is connected with an tuber pipe 9 that is used for connecting air conditioner wind cabinet, the utility model discloses a mode of air conditioner wind cabinet air supply not only makes fan quantity reduce, calorific capacity reduce through the air supply of single cycle fan, can not influence clean district internal environment temperature, has avoided getting wind and leading to clean district air flow pattern to change from clean district moreover. The air-conditioning air cabinet can be placed at a position far away from the clean room through a pipeline, so that the noise in the clean room is effectively reduced. A smoke generating pipe 10 is arranged in the static pressure box 1 corresponding to the inner space between the air pipe 9 and the high-efficiency filter 2, an air pipe joint 11 is arranged on the outer wall of the static pressure box 1 corresponding to the inner space, the air pipe joint 11 is communicated with the inner space of the static pressure box 1, and the air pipe joint 11 can also be communicated with a negative pressure return air channel through a pipeline. The bending piece 3 is provided with a detection port 12, and the detection port 12 is communicated with the inner space of the static pressure box 1 through a connecting pipe; the bending piece 3 is provided with a PAO (polyamide-imide) injection port 13, and the PAO injection port 13 is communicated with the smoke generating pipe 10 through a connecting pipe so as to facilitate daily use and detection. Similarly, the joints of the static pressure box 1 and the connecting pipes are hermetically connected through full welding, so that the sealing performance of the box body is ensured. Pressure sensors can also be provided in the static pressure tank 1 to monitor the pressure difference inside the static pressure tank 1. An angle steel 15 is arranged at the upper end part of the static pressure box 1 and is in threaded connection with a color steel plate 16.
Further preferably, the upper end of the high-efficiency filter 2 is hermetically connected with the fiber filter paper 14, which has better oxidation resistance and corrosion resistance compared with rubber sealing, and is suitable for spaces or occasions requiring frequent disinfection, such as clean rooms.
To sum up, the utility model discloses a laminar flow cover utilizes negative pressure seal structure to improve sealed effect, effectively reduces the leakage risk, and the high efficiency filter 2's of being convenient for quick installation uses the air conditioner wind cabinet air supply, does not influence the air current flow pattern in toilet, has effectively reduced fan calorific capacity and noise.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. The utility model provides a prevent leaking negative pressure laminar flow hood which characterized in that: the static pressure box is arranged in the static pressure box, and the high-efficiency filter is arranged in the static pressure box; a limiting block for positioning the high-efficiency filter is arranged in the static pressure box, and the upper end part of the high-efficiency filter is in sealing butt joint with the inner wall of the static pressure box; the bottom of the side face of the static pressure box is connected with a bending piece in a sealing mode, the bending edge of the bending piece is inserted into jelly glue of a liquid tank of the efficient filter, the efficient filter is installed in the static pressure box through a connecting piece in the middle of the bending piece, and a sealing space is formed between the side face of the efficient filter and the static pressure box.
2. The leak-resistant, negative-pressure laminar flow hood according to claim 1, wherein: the static pressure box is provided with a hose connector, and the hose connector is communicated with the sealing space.
3. The leak-resistant, negative-pressure laminar flow hood according to claim 2, wherein: the upper end part of the static pressure box is connected with an air pipe used for connecting an air-conditioning air cabinet.
4. The leak-resistant, negative-pressure laminar flow hood according to any of claims 1 to 3, wherein: the upper end part of the high-efficiency filter is hermetically connected with the inner wall of the static pressure box through a sealing ring.
5. The leak-resistant, negative-pressure laminar flow hood according to any of claims 1 to 3, wherein: an air pipe joint is arranged at the upper end part of the static pressure box and communicated with the inside of the static pressure box.
6. The leak-resistant, negative-pressure laminar flow hood according to any of claims 1 to 3, wherein: the upper end part of the high-efficiency filter is hermetically connected with fiber filter paper.
7. The leak-resistant, negative-pressure laminar flow hood according to any of claims 1 to 3, wherein: the bending piece is provided with a detection port, and the detection port is communicated with the interior of the static pressure box through a connecting pipe; the bending piece is provided with a PAO (polyamide-imide) filling opening, and a smoke generating pipe is arranged inside the static pressure box; the PAO injection port is communicated with the smoke generating pipe through a connecting pipe.
8. The leak-resistant, negative-pressure laminar flow hood according to claim 7, wherein: and the static pressure box is hermetically connected with the connecting pipe and the bent part at the joint through full welding.
9. The leak-resistant, negative-pressure laminar flow hood according to any of claims 1 to 3, wherein: an angle steel is arranged at the upper end of the static pressure box and is in threaded connection with the color steel plate.
10. The leak-resistant, negative-pressure laminar flow hood according to any of claims 1 to 3, wherein: the connecting piece is connecting rod and screw rod, the connecting rod sets up high efficiency filter's below and through the screw rod with the piece middle part of bending can be dismantled and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120646873.5U CN215002094U (en) | 2021-03-30 | 2021-03-30 | Prevent leaking negative pressure laminar flow cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120646873.5U CN215002094U (en) | 2021-03-30 | 2021-03-30 | Prevent leaking negative pressure laminar flow cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215002094U true CN215002094U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120646873.5U Active CN215002094U (en) | 2021-03-30 | 2021-03-30 | Prevent leaking negative pressure laminar flow cover |
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| Country | Link |
|---|---|
| CN (1) | CN215002094U (en) |
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2021
- 2021-03-30 CN CN202120646873.5U patent/CN215002094U/en active Active
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