CN212881473U

CN212881473U - Laminar flow isolation hood of negative pressure chamber

Info

Publication number: CN212881473U
Application number: CN202021386224.8U
Authority: CN
Inventors: 沈轶清
Original assignee: Huajing Construction Suzhou Co ltd
Current assignee: Huajing Construction Suzhou Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-04-06
Anticipated expiration: 2030-07-15

Abstract

The utility model discloses a negative pressure chamber laminar flow cage, including shell, centrifugal fan and support column, bottom middle part is provided with the inner shell in the shell, inner shell lower extreme outer wall with shell bottom middle part is passed through the draw-in groove and is connected, inner shell upper end middle part is provided with centrifugal fan, inner shell lower extreme periphery is provided with the mounting bracket. Has the advantages that: the utility model discloses a set up the mounting bracket, the structure that shell was stretched out to sealed pad and inner shell, make equipment under the prerequisite of guaranteeing good leakproofness, make high efficiency filter can be through the convenient dismouting that carries on of mounting bracket, so that maintain, the maintenance convenience of negative pressure room laminar flow cage has been improved, through setting up electric liquid push rod, the support column, support side pipe and fastening knob, make the height of shell can stabilize convenient regulation, thereby make the negative pressure room laminar flow cage can satisfy the user demand of the workstation of co-altitude, and is very practical.

Description

Laminar flow isolation hood of negative pressure chamber

Technical Field

The utility model relates to a negative pressure chamber technical field, concretely relates to negative pressure chamber laminar flow cage.

Background

The laminar flow isolation hood of the negative pressure chamber is installed in a clean room, is one of devices capable of shielding and isolating operators and products, and is mainly used for avoiding product pollution. The air drawn from the cleanroom is then filtered vertically through the operating area by HEPA using a fan mounted in the top plenum to provide ISO5 (class 100) unidirectional flow air for 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.

Inside the filter part of current negative pressure chamber laminar flow cage air outlet was located equipment, it was inconvenient to dismantle, safeguarded inconveniently, and the unable regulation of height of current negative pressure chamber laminar flow cage was difficult to satisfy the user demand of the workstation of co-altitude moreover, and the practicality is not enough.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the laminar flow isolation hood for the negative pressure chamber is provided, and the problems that the filter part at the air outlet of the laminar flow isolation hood for the negative pressure chamber is inconvenient to disassemble and maintain because the filter part is positioned inside equipment are solved.

Technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a negative pressure chamber laminar flow cage, including shell, centrifugal fan and support column, bottom middle part is provided with the inner shell in the shell, inner shell lower extreme outer wall with shell bottom middle part is passed through the draw-in groove and is connected, inner shell upper end middle part is provided with centrifugal fan, inner shell lower extreme periphery is provided with the mounting bracket, mounting bracket upper end arris with the shell lower extreme passes through bolted connection, the bottom is glued in the mounting bracket and is sealed the pad, sealed pad top is provided with high efficiency filter, shell lower extreme four corners department is provided with the support column, support column lower extreme periphery is provided with support side's pipe, a support side's pipe wall upper end is provided with the fastening knob, support side's pipe lower extreme is provided with the bottom plate, bottom plate upper end middle.

Through adopting above-mentioned technical scheme, the mount frame is in the shell bottom end is to high efficiency filter supports, sealed pad can make high efficiency filter with the mount frame and have good leakproofness between the inner shell the mount frame is pulled down the back, can with the convenient taking off of high efficiency filter.

Furthermore, the upper end of the shell is connected with a top cover through a bolt, an air inlet is formed in the middle of the upper end of the top cover, and the air inlet corresponds to the centrifugal fan in position.

By adopting the technical scheme, air outside the shell can enter the shell through the air inlet.

Furthermore, the upper end of the air inlet is connected with a first filter screen through a clamping groove, four corners of the lower end of the first filter screen are connected with a connecting frame through screws, and the lower end of the connecting frame is connected with a second filter screen through screws.

Through adopting above-mentioned technical scheme, through the air of air intake can by filter screen one with filter screen two filters, filter screen one can with the convenient split that carries on of air intake, the filter screen two passes through the link with filter screen one is connected as an organic whole.

Further, the support column upper end with shell lower extreme four corners department passes through bolted connection, the support column outer wall with support side's intraductal wall sliding connection, the fastening knob with support side's lateral wall passes through threaded connection, the fastening knob with the support column is connected through the mode of card pressure.

Through adopting above-mentioned technical scheme, when the fastening knob was screwed can with the support column chucking is in the support side's pipe, support side's pipe with the support column is common right the shell supports when the fastening knob is unscrewed, the support column can support side's intraductal slip, like this the high convenient adjustment that carries on of shell.

Furthermore, the number of the bottom plates is two, a connecting plate is welded at one end between the bottom plates, the lower end of the electro-hydraulic push rod is connected with the middle part of the upper end of the bottom plate through a bolt, and the upper end of the electro-hydraulic push rod is connected with two sides of the lower end of the shell through clamping grooves.

By adopting the technical scheme, the electro-hydraulic push rod can support the bottom plate to enable the shell to lift when in work.

Furthermore, the two sides of the lower end of the bottom plate are connected with universal wheels through bolts, and one side of each universal wheel is rotatably connected with a wheel lock.

Through adopting above-mentioned technical scheme, negative pressure room laminar flow cage passes through the universal wheel can be convenient remove, through the wheel lock can with the universal wheel locking.

Advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

in order to solve the problems that the air outlet of the existing laminar flow isolation hood for the negative pressure chamber is inconvenient to disassemble and maintain because a filtering part is positioned inside equipment, the structure that a mounting frame, a sealing gasket and an inner shell extend out of an outer shell is arranged, so that the equipment can be conveniently disassembled and assembled through the mounting frame on the premise of ensuring good sealing performance, the maintenance is convenient, and the maintenance convenience of the laminar flow isolation hood for the negative pressure chamber is improved; for solving the unable regulation of height of current negative pressure chamber laminar flow cage, be difficult to satisfy the problem of the user demand of the workstation of co-altitude, the utility model discloses a set up electric liquid push rod, support column, support side pipe and fastening knob, make highly can stabilize convenient the adjusting of shell to make negative pressure chamber laminar flow cage can satisfy the user demand of the workstation of co-altitude not, very practical.

Drawings

Fig. 1 is a schematic structural view of a laminar flow isolation hood of a negative pressure chamber according to the present invention;

fig. 2 is a cross-sectional view of the housing in the laminar flow isolation hood of the negative pressure chamber according to the present invention;

fig. 3 is a schematic view of the connection relationship among the first filter screen, the connection frame and the filter screen in the laminar flow isolation hood of the negative pressure chamber of the present invention;

fig. 4 is a schematic structural diagram of a mounting frame and a sealing gasket in a laminar flow isolation hood of a negative pressure chamber.

The reference numerals are explained below:

1. a housing; 2. an inner shell; 3. a centrifugal fan; 4. a mounting frame; 5. a gasket; 6. a high efficiency filter; 7. a support pillar; 8. supporting the square pipe; 9. fastening a knob; 10. a base plate; 11. an electro-hydraulic push rod; 12. a top cover; 13. an air inlet; 14. a first filter screen; 15. a connecting frame; 16. a second filter screen; 17. a connecting plate; 18. a universal wheel; 19. and (4) locking the wheel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-4, the laminar flow isolation hood of the negative pressure chamber in this embodiment comprises an outer shell 1, a centrifugal fan 3 and support columns 7, wherein an inner shell 2 is disposed at the middle of the bottom end of the outer shell 1, the outer wall of the lower end of the inner shell 2 is connected with the middle of the bottom end of the outer shell 1 through a clamping groove, the centrifugal fan 3 is disposed at the middle of the upper end of the inner shell 2, a mounting frame 4 is disposed at the periphery of the lower end of the inner shell 2, an upper edge of the mounting frame 4 is connected with the lower end of the outer shell 1 through a bolt, a sealing pad 5 is glued at the inner bottom end of the mounting frame 4, a high efficiency filter 6 is disposed above the sealing pad 5, the support columns 7 are disposed at four corners of the lower end of the outer shell 1, a support square tube 8 is disposed at the periphery of the lower end, mounting bracket 4 supports high efficiency filter 6 in the 1 bottom of shell, and sealed pad 5 can make high efficiency filter 6 and mounting bracket 4 and inner shell 2 between have good leakproofness, and after mounting bracket 4 dismantles, high efficiency filter 6 also can be convenient takes off.

As shown in fig. 1-2, the upper end of the housing 1 is connected to a top cover 12 through bolts, an air inlet 13 is formed in the middle of the upper end of the top cover 12, the air inlet 13 corresponds to the position of the centrifugal fan 3, the top cover 12 can be detached from the housing 1, and air outside the housing 1 can enter the housing 1 through the air inlet 13.

As shown in fig. 1-3, the upper end of the air inlet 13 is connected with a first filter screen 14 through a clamping groove, four corners of the lower end of the first filter screen 14 are connected with a connecting frame 15 through screws, the lower end of the connecting frame 15 is connected with a second filter screen 16 through screws, air passing through the air inlet 13 can be filtered by the first filter screen 14 and the second filter screen 16, the first filter screen 14 can be conveniently detached from the air inlet 13, the second filter screen 16 is connected with the first filter screen 14 into a whole through the connecting frame 15, and therefore when the first filter screen 14 is detached and taken out, the second filter screen 16 can be taken out together through the.

As shown in fig. 1, bolted connection is passed through with 1 lower extreme four corners department of shell in the upper end of support column 7, 8 inner wall sliding connection are managed with supporting to the support column 7 outer wall, fastening knob 9 passes through threaded connection with 8 lateral walls of supporting side pipe, fastening knob 9 is connected through the mode that the card was pressed with support column 7, can be with support column 7 chucking in 8 square pipes of supporting side when fastening knob 9 screws, 8 square pipes of supporting side support shell 1 with support column 7 jointly, when fastening knob 9 unscrews, support column 7 can slide in 8 square pipes of supporting side, the height of shell 1 can be convenient adjusts like this, 8 square pipes of supporting side plays the guide effect through support column 7 to the lift of shell 1.

As shown in figure 1, the number of the base plates 10 is two, a connecting plate 17 is welded at one end between the base plates 10, the lower end of an electro-hydraulic push rod 11 is connected with the middle of the upper end of the base plate 10 through a bolt, the upper end of the electro-hydraulic push rod 11 is connected with the two sides of the lower end of a shell 1 through clamping grooves, the electro-hydraulic push rod 11 can support the base plates 10 to enable the shell 1 to lift when working, and the structure of the two base plates 10 is more stable after being.

As shown in fig. 1, universal wheels 18 are connected to two sides of the lower end of the bottom plate 10 through bolts, a wheel lock 19 is connected to one side of each universal wheel 18 in a rotating mode, the laminar isolation cover of the negative pressure chamber can be conveniently moved through the universal wheels 18, and the universal wheels 18 can be locked through the wheel locks 19, so that the laminar isolation cover of the negative pressure chamber is difficult to move.

The specific implementation process of this embodiment is as follows: the laminar flow isolation cover of the negative pressure chamber uses an external power supply and is controlled by external equipment, when the height of the laminar flow isolation cover of the negative pressure chamber needs to be adjusted, the fastening knob 9 can be unscrewed, then the electro-hydraulic push rod 11 is controlled to work, the electro-hydraulic push rod 11 can drive the outer shell 1 to lift, the supporting column 7 and the supporting square tube 8 can play a guiding role in lifting of the outer shell 1, the fastening knob 9 is screwed after the height of the outer shell 1 is adjusted properly, so that the supporting column 7 and the supporting square tube 8 can assist the electro-hydraulic push rod 11 in supporting the outer shell 1, the laminar flow isolation cover of the negative pressure chamber can be conveniently moved through the universal wheel 18, when the laminar flow isolation cover works, the centrifugal fan 3 works to extract air between the inner shell 2 and the outer shell 1, the air enters the inner shell 2, a negative pressure environment can be created between the outer shell 1 and the inner shell, the air through air intake 13 can be filtered by filter screen one 14 and filter screen two 16, and the air that centrifugal fan 3 blew off forms the homoflow layer after high efficiency filter 6, makes clean air be perpendicular uniflow to reach the high cleanliness factor of technological requirement in the workspace of assurance shell 1 below, reach the effect that the laminar flow was kept apart, and is very practical, when high efficiency filter 6 need dismantle the maintenance, pull down mounting bracket 4 and can make taking off that high efficiency filter 6 can be convenient.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. The utility model provides a negative pressure chamber laminar flow cage which characterized in that: including shell, centrifugal fan and support column, bottom middle part is provided with the inner shell in the shell, inner shell lower extreme outer wall with shell bottom middle part is passed through the draw-in groove and is connected, inner shell upper end middle part is provided with centrifugal fan, inner shell lower extreme periphery is provided with the mounting bracket, mounting bracket upper end arris with the shell lower extreme passes through bolted connection, the end has glued at the mounting bracket inner bottom and has sealed the pad, sealed pad top is provided with high efficiency filter, shell lower extreme four corners department is provided with the support column, support column lower extreme periphery is provided with support side's pipe, support side's pipe wall upper end is provided with the fastening knob, support side's pipe lower extreme is provided with the bottom plate, bottom plate.

2. The laminar flow hood according to claim 1, wherein: the upper end of the shell is connected with a top cover through a bolt, an air inlet is formed in the middle of the upper end of the top cover, and the air inlet corresponds to the centrifugal fan in position.

3. The laminar flow hood according to claim 2, wherein: the air inlet upper end is connected with a filter screen I through a clamping groove, four corners of the lower end of the filter screen I are connected with a connecting frame through screws, and the lower end of the connecting frame is connected with a filter screen II through screws.

4. The laminar flow hood according to claim 1, wherein: the utility model discloses a pipe clamp, including support column, shell, fastening knob, shell, bolt, support column upper end with shell lower extreme four corners department passes through bolted connection, the support column outer wall with support side's intraductal wall sliding connection, the fastening knob with support side's lateral wall passes through threaded connection, the fastening knob with the support column is connected through the mode of card pressure.

5. The laminar flow hood according to claim 4, wherein: the number of the bottom plates is two, a connecting plate is welded at one end between the bottom plates, the lower end of the electro-hydraulic push rod is connected with the middle part of the upper end of the bottom plate through a bolt, and the upper end of the electro-hydraulic push rod is connected with the two sides of the lower end of the shell through clamping grooves.

6. The laminar flow hood according to claim 5, wherein: the universal wheel is connected to the two sides of the lower end of the bottom plate through bolts, and a wheel lock is rotatably connected to one side of the universal wheel.