CN220958769U - Ventilating structure of steel structure factory building - Google Patents
Ventilating structure of steel structure factory building Download PDFInfo
- Publication number
- CN220958769U CN220958769U CN202322989379.0U CN202322989379U CN220958769U CN 220958769 U CN220958769 U CN 220958769U CN 202322989379 U CN202322989379 U CN 202322989379U CN 220958769 U CN220958769 U CN 220958769U
- Authority
- CN
- China
- Prior art keywords
- filter screen
- screen frame
- fixedly connected
- block
- air pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 238000009423 ventilation Methods 0.000 claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 16
- 230000006978 adaptation Effects 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims abstract description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 12
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 12
- 241001330002 Bambuseae Species 0.000 claims description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 12
- 239000011425 bamboo Substances 0.000 claims description 12
- 241000196324 Embryophyta Species 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Landscapes
- Ventilation (AREA)
Abstract
The utility model relates to the technical field of steel structure plants, in particular to a ventilation structure of a steel structure plant, which solves the problems that in the prior art, the installation mode is to install through connection of an adjusting screw and a threaded hole, sliding wires are easily corroded due to the influence of external environment when the ventilation structure is used for a long time, a dustproof support is possibly difficult to detach and take down by personnel, the operation difficulty of the personnel in a maintenance and cleaning step is extremely high, and the practicability of the ventilation structure is reduced. The utility model provides a ventilation structure of steel construction factory building, includes air pipe, air pipe's inside is provided with the filter screen frame, and one side of filter screen frame is provided with radiator fan, and the filter screen frame both sides all are provided with the cardboard, and air pipe's top has seted up the seal groove, the top fixedly connected with of filter screen frame and the sealing block of seal groove looks adaptation. The utility model is convenient for personnel to rapidly assemble and disassemble the filter screen frame, and improves the practicability of the ventilation structure.
Description
Technical Field
The utility model relates to the technical field of steel structure plants, in particular to a ventilation structure of a steel structure plant.
Background
The steel structure factory building mainly comprises steel materials, including steel columns, steel beams, steel structure foundations, steel roof trusses and steel roofs, and because the steel yield of China is increased, many factories begin to adopt steel structures, and the steel structure factory building has the advantages of light building quality, high strength, large span, short construction period, low investment cost, convenience in moving, no pollution in recycling and the like.
The utility model provides a ventilation structure of steel construction factory building that puts forward in the above-mentioned patent of bulletin number CN 218820829U that grants, including the air pipe, the inside of air pipe is equipped with air supply channel, air supply channel's inside activity is equipped with radiator fan, dustproof support is installed in air supply channel's front, dustproof support's inside is equipped with the dust screen, above-mentioned technical scheme, through being equipped with dustproof support, dustproof support's inside is equipped with the dust screen, can reduce the dust and enter into the inside of device, when the dust in the dust screen is cleared up to needs, open the retaining member, pull dustproof support forward after opening, the aforesaid ventilation structure can be effectively loaded and unloaded the dust screen to take out to clear up the dust screen, but its mounting means is installed through adjusting screw and screw hole connection, and this kind of connection mode is arranged in the air pipe, if after long-time use, adjusting screw and screw hole take place to corrode and lead to the smooth silk like long-time by external environment influence, the condition that the personnel is difficult to demolish dustproof support and take off probably, lead to personnel to the operation degree of difficulty on maintaining the clearance step, cause the practicality that has brought forward the dust screen in the dust screen, has brought forward the dust structure of the steel structure to put forward in the factory building.
Disclosure of utility model
The utility model aims to provide a ventilation structure of a steel structure factory building, which solves the problems that in the prior art, the installation mode is to install through the connection of an adjusting screw and a threaded hole, sliding wires are easily corroded due to the influence of external environment when the ventilation structure is used for a long time, a dustproof support is possibly difficult to detach and take down by personnel, the operation difficulty of the personnel in a maintenance and cleaning step is extremely high, and the practicability of the ventilation structure is reduced.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a ventilation structure of steel construction factory building, includes the air pipe, the inside of air pipe is provided with the filter screen frame, one side of filter screen frame is provided with radiator fan, the filter screen frame both sides all are provided with the cardboard, the seal groove has been seted up at the top of air pipe, the sealing block of top fixedly connected with and seal groove looks adaptation of filter screen frame, the slot has all been seted up to the both sides of sealing block, the both sides of air pipe are provided with a locating component who is connected with the slot respectively, one side that radiator fan was kept away from to the filter screen frame is provided with the installation shell, the inside brush section of thick bamboo that is provided with of installation shell, the inside lifting component who is connected with the brush section of thick bamboo that is provided with of air pipe.
Preferably, the locating component comprises a connecting plate arranged on one side of the ventilating duct, the connecting plate is U-shaped, two end side walls of the connecting plate are fixedly connected with the outer wall of one side of the ventilating duct, a pull rod is arranged in the connecting plate, one end of the pull rod penetrates through the side wall of the ventilating duct and is inserted into the slot, a pull block is fixedly arranged at the other end of the pull rod, a spring is sleeved on the outer portion of the pull rod, and two ends of the spring are fixedly connected with one side of the pull block and the outer wall of one side of the connecting plate respectively.
Preferably, the positioning assembly further comprises a jack formed in one side of the pull block, a limiting groove is formed in the outer wall of one side of the connecting plate, a sliding block is connected in the limiting groove in a sliding mode, and one side of the sliding block is fixedly connected with a limiting rod matched with the jack.
Preferably, the lifting assembly comprises a screw rod arranged in the ventilating duct, one end of the bottom of the screw rod is rotationally connected with the inner bottom of the ventilating duct, a motor is fixedly connected to one side of the inner top of the ventilating duct, the output end of the motor is in transmission connection with one end of the top of the screw rod, a screw sleeve is sleeved outside the screw rod, a connecting block is fixedly connected to one side of an outer ring of the screw sleeve, the other side of the connecting block is fixedly connected with one side of a mounting shell, a mounting groove is formed in one side, close to the filter screen frame, of the mounting shell, and both ends of the hairbrush barrel are rotationally connected with inner walls on two sides of the mounting groove.
Preferably, a guide rod is sleeved in the screw sleeve and positioned on one side of the screw rod, and two ends of the guide rod are respectively connected with the side wall of the bottom of the motor and the inner bottom of the ventilation pipeline.
Preferably, the top fixedly connected with handle of sealing block, two the draw-in groove with filter screen frame both sides looks adaptation has all been seted up to the adjacent lateral wall of cardboard, two one side that the filter screen frame was kept away from to the cardboard is respectively with air pipe's both sides inner wall fixed connection.
The utility model has at least the following beneficial effects:
Pulling the pull block drives the pull rod to move to release the positioning of the sealing block, holding the handle to draw the sealing block and the filter screen frame upwards from the ventilating duct, inserting the filter screen frame into two clamping grooves and sliding in during installation, then loosening the pull block to enable the spring to lose tension and be influenced by elastic recovery to drive the pull block to return, enabling one end of the pull rod to be inserted into the slot, positioning the sealing block and the filter screen frame to achieve the effect of convenient replacement, and when the person pulls the pull block to release the limit of the sealing block, the sliding slide block drives the limiting rod to move and enables one end of the limiting rod to be inserted into the jack on one side of the pull block to position the pull block, so that the person can conveniently take out of the hand to operate another positioning component, the person is not required to pull the pull block all the time or for many times, the filter screen frame is convenient to assemble and disassemble, and the practicality of the structure is improved.
The utility model also has the following beneficial effects:
The starter motor drives the screw rod and rotates and make the swivel nut produce vertical displacement, drives installation shell and brush section of thick bamboo and remove, when a plurality of brush hair of brush section of thick bamboo and filter screen frame contact to clear up the intractable impurity of adhesion on the filter screen frame, a plurality of brush hair can drive the brush section of thick bamboo and produce the rotation at the contact filter screen frame vertical removal simultaneously, further promotes the clearance effect to the filter screen frame, need not personnel and loads and unloads the clearance often, alleviates personnel work burden, promotes structural practicality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a screen frame according to the present utility model;
FIG. 3 is a cut-away view of the vent conduit of the present utility model;
FIG. 4 is a schematic view of the structure of the connecting plate of the present utility model;
fig. 5 is a schematic structural view of the stop lever of the present utility model.
In the figure: 1. a ventilation duct; 2. a motor; 3. a screw; 4. a screw sleeve; 5. a connecting block; 6. a mounting shell; 7. a filter screen frame; 8. a brush cylinder; 9. a sealing block; 10. a clamping plate; 11. a connecting plate; 12. a pull rod; 13. pulling blocks; 14. a spring; 15. a limit rod; 16. a sliding block.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-5, a ventilating structure of a steel structure factory building comprises a ventilating duct 1, wherein a filter screen frame 7 is arranged in the ventilating duct 1, a radiator fan is arranged on one side of the filter screen frame 7, clamping plates 10 are arranged on two sides of the filter screen frame 7, a sealing groove is formed in the top of the ventilating duct 1, a sealing block 9 matched with the sealing groove is fixedly connected to the top of the filter screen frame 7, slots are formed in two sides of the sealing block 9, a positioning component connected with the slots is respectively arranged on two sides of the ventilating duct 1, a mounting shell 6 is arranged on one side, far away from the radiator fan, of the filter screen frame 7, a brush cylinder 8 is arranged in the mounting shell 6, a lifting component connected with the brush cylinder 8 is arranged in the ventilating duct 1,
Further, positioning assembly includes the connecting plate 11 that sets up in ventilation duct 1 one side, connecting plate 11 is the U type, and connecting plate 11's both ends lateral wall all is with ventilation duct 1 one side outer wall fixed connection, connecting plate 11's inside is provided with pull rod 12, ventilation duct 1 lateral wall is run through to one end of pull rod 12 and slot looks grafting, pull rod 12's other end fixed mounting has pull block 13, spring 14 has been cup jointed to the outside of pull rod 12, spring 14's both ends respectively with pull block 13 one side and connecting plate 11 one side outer wall fixed connection, specifically, through the setting of spring 14, personnel pass through pull block 13 and drive pull rod 12 and remove the location to sealing block 9 from the slot of sealing block 9 one side, pull block 13 stretches spring 14 this moment, upwards remove sealing block 9 and filter screen frame 7 together from ventilation duct 1 in, the personnel's of being convenient for swiftly change, in the installation time, repeatedly above-mentioned operation and insert the draw-in groove between two cardboard 10 with filter screen frame 7 through the seal groove and slide into, make sealing block 9 and seal groove adaptation, then loosen pull block 13 makes spring 14 lose pulling force and receive elasticity influence and drive pull block 13, pull block 13 shifts out the location to sealing block 9 from the slot, the convenient for the replacement of sealing block 9, the one side is reached to sealing block 9 is convenient to change one side.
Further, the locating component still includes the jack of seting up in pull block 13 one side, the spacing groove has been seted up to one side outer wall of connecting plate 11, sliding connection has slider 16 in the spacing groove, one side fixedly connected with of slider 16 and the gag lever post 15 of jack looks adaptation, specifically, through the setting of gag lever post 15, when personnel pulling pull block 13 drive pull rod 12 remove the spacing to sealing block 9, personnel can drive gag lever post 15 removal and make the one end of gag lever post 15 insert in the jack of seting up in pull block 13 one side, locate pull block 13, make things convenient for personnel to vacate the hand and operate another locating component, need not personnel to pull block 13 always or many times, the convenience is loaded and unloaded filter screen frame 7, promote structural practicality.
Further, lifting component includes the screw rod 3 that sets up in ventilation duct 1, and the bottom one end and the ventilation duct 1 in bottom rotation connection, top one side fixedly connected with motor 2 in the ventilation duct 1, the output of motor 2 and the top one end transmission connection of screw rod 3, screw rod 3 outside cover is equipped with swivel nut 4, outer lane one side fixedly connected with connecting block 5 of swivel nut 4, the opposite side of connecting block 5 and one side fixed connection of installation shell 6, the mounting groove has been seted up to one side that installation shell 6 is close to filter screen frame 7, the both ends of brush section of thick bamboo 8 all rotate with the mounting groove both sides inner wall and are connected, specifically, through the setting of screw rod 3, personnel can drive screw rod 3 through starter motor, screw rod 3 makes swivel nut 4 produce vertical displacement immediately, swivel nut 4 drives installation shell 6 and drives the inside brush section of thick bamboo 8 of thick bamboo of installation shell 6 in the lump through connecting block 5, when the contact with filter screen frame 7 to a plurality of brush hair of brush section of thick bamboo 8, thereby the intractable impurity to adhere to filter screen frame 7 clear up, a plurality of brush hair can drive brush section of thick bamboo 8 and produce and rotate at the contact filter screen frame 7, further promote the clearance personnel, the clearance burden of filter screen personnel need not to load, the practicality is improved, the personnel is clear up.
Further, the inside of swivel nut 4 just is located one side of screw rod 3 and has cup jointed the guide bar, and the both ends of guide bar are connected with motor 2 bottom lateral wall and air pipe 1 interior bottom respectively, and specifically, through the setting of guide bar, the guide bar can carry out spacingly to swivel nut 4, avoids swivel nut 4 to follow screw rod 3 and rotate in the lump.
Further, the top fixedly connected with handle of sealing block 9, the draw-in groove with filter screen frame 7 both sides looks adaptation has all been seted up to the adjacent lateral wall of two cardboard 10, one side that filter screen frame 7 was kept away from to two cardboard 10 respectively with air pipe 1's both sides inner wall fixed connection, specifically, through cardboard 10's setting, the draw-in groove of two cardboard 10 adjacent lateral walls can carry out spacingly to filter screen frame 7's both sides, avoids filter screen frame 7 to take place the skew when the operation or being cleared up.
To sum up:
The pull rod 13 is pulled to drive the pull rod 12 to move out of the slot on one side of the sealing block 9 to release the positioning of the sealing block 9, at the moment, the pull rod 13 stretches the spring 14, the sealing block 9 and the filter screen frame 7 are pulled out of the ventilation pipeline 1 by holding the handle to move upwards, the quick replacement of a person is facilitated, the operation is repeated during installation, the filter screen frame 7 is inserted into the clamping groove between the two clamping plates 10 through the sealing groove, the sealing block 9 is matched with the sealing groove, the pull rod 13 is released to enable the spring 14 to lose tension, the elastic recovery influences to drive the pull rod 13 to return, the pull rod 13 immediately drives the pull rod 12 to return, one end of the pull rod 12 is inserted into the slot on one side of the sealing block 9, the positioning of the sealing block 9 and the filter screen frame 7 are completed, the convenient replacement effect is achieved, the person can conveniently clean, when the person pulls the pull rod 13 drives the pull rod 12 to release the limit of the sealing block 9, the person can drive the limit rod 15 to move through the sliding slide slider 16, one end of the limit rod 15 is inserted into the jack formed on one side of the pull rod 13, the pull rod 13 is positioned, the person conveniently leaves the hand to operate another positioning assembly, the person can conveniently pull the other positioning assembly, the person can pull the pull rod 13, or the filter screen frame 7 repeatedly and the filter screen frame is conveniently and the filter screen frame is lifted.
The screw rod 3 is driven to rotate by the starting motor 2, the screw rod 3 enables the screw sleeve 4 to vertically displace, the screw sleeve 4 drives the installation shell 6 to move together through the connecting block 5 and drives the brush cylinder 8 inside the installation shell 6, when a plurality of bristles of the brush cylinder 8 are contacted with the filter screen frame 7, intractable impurities adhered to the filter screen frame 7 are cleaned, the plurality of bristles can drive the brush cylinder 8 to rotate when contacting the filter screen frame 7, the cleaning effect of the filter screen frame 7 is further improved, personnel are not required to load and unload and clean frequently, the personnel work load is reduced, and the structural practicability is improved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a ventilation structure of steel construction factory building, includes air pipe (1), its characterized in that, the inside of air pipe (1) is provided with filter screen frame (7), one side of filter screen frame (7) is provided with radiator fan, filter screen frame (7) both sides all are provided with cardboard (10), seal groove has been seted up at the top of air pipe (1), seal groove with seal groove looks adaptation sealing block (9) are connected in top fixedly connected with of filter screen frame (7), the slot has all been seted up to the both sides of sealing block (9), the both sides of air pipe (1) are provided with a locating component who is connected with the slot respectively, one side that radiator fan was kept away from to filter screen frame (7) is provided with installation shell (6), installation shell (6) inside is provided with brush section of thick bamboo (8), the inside lifting unit who is connected with brush section of thick bamboo (8) of air pipe (1).
2. The ventilating structure of the steel structure plant according to claim 1, wherein the positioning assembly comprises a connecting plate (11) arranged on one side of the ventilating duct (1), the connecting plate (11) is U-shaped, two end side walls of the connecting plate (11) are fixedly connected with one side outer wall of the ventilating duct (1), a pull rod (12) is arranged in the connecting plate (11), one end of the pull rod (12) penetrates through the side wall of the ventilating duct (1) to be inserted into a slot, a pull block (13) is fixedly arranged at the other end of the pull rod (12), a spring (14) is sleeved outside the pull rod (12), and two ends of the spring (14) are fixedly connected with one side of the pull block (13) and one side outer wall of the connecting plate (11) respectively.
3. The ventilation structure of the steel structure factory building according to claim 2, wherein the positioning assembly further comprises a jack formed in one side of the pull block (13), a limit groove is formed in the outer wall of one side of the connecting plate (11), a sliding block (16) is connected in the limit groove in a sliding mode, and a limit rod (15) matched with the jack is fixedly connected to one side of the sliding block (16).
4. The ventilating structure of a steel structure factory building according to claim 1, wherein the lifting assembly comprises a screw rod (3) arranged in a ventilating duct (1), one end of the bottom of the screw rod (3) is rotationally connected with the bottom in the ventilating duct (1) (), one side of the top in the ventilating duct (1) is fixedly connected with a motor 2 (), the output end of the motor (2) is in transmission connection with one end of the top of the screw rod (3), a threaded sleeve (4) is sleeved outside the screw rod (3), a connecting block (5) is fixedly connected with one side of an outer ring of the threaded sleeve (4), the other side of the connecting block (5) is fixedly connected with one side of a mounting shell (6), one side of the mounting shell (6) close to a filter screen frame (7) is provided with a mounting groove, and two ends of a brush cylinder (8) are rotationally connected with inner walls on two sides of the mounting groove.
5. The ventilation structure of the steel structure factory building according to claim 4, wherein a guide rod is sleeved on one side of the screw rod (3) inside the screw sleeve (4), and two ends of the guide rod are respectively connected with the bottom side wall of the motor (2) and the inner bottom of the ventilation pipeline (1).
6. The ventilation structure of the steel structure factory building according to claim 1, wherein the top of the sealing block (9) is fixedly connected with a handle, clamping grooves matched with two sides of the filter screen frame (7) are formed in adjacent side walls of the two clamping plates (10), and one sides, far away from the filter screen frame (7), of the two clamping plates (10) are fixedly connected with two side inner walls of the ventilation pipeline (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322989379.0U CN220958769U (en) | 2023-11-07 | 2023-11-07 | Ventilating structure of steel structure factory building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322989379.0U CN220958769U (en) | 2023-11-07 | 2023-11-07 | Ventilating structure of steel structure factory building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220958769U true CN220958769U (en) | 2024-05-14 |
Family
ID=91024741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322989379.0U Active CN220958769U (en) | 2023-11-07 | 2023-11-07 | Ventilating structure of steel structure factory building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220958769U (en) |
-
2023
- 2023-11-07 CN CN202322989379.0U patent/CN220958769U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209886237U (en) | Photovoltaic module surface deposition cleaning device | |
| CN220958769U (en) | Ventilating structure of steel structure factory building | |
| CN111614311B (en) | Solar panel mounting rack for household roof photovoltaic engineering | |
| CN218783783U (en) | Photovoltaic power plant is with brush that removes dust | |
| CN217584824U (en) | Rain-proof dustproof tripe wind gap | |
| CN215656536U (en) | Photovoltaic power plant is with solar panel surface intelligence cleaning device | |
| CN210399416U (en) | Energy-saving central air conditioning clarification plant | |
| CN220589268U (en) | Air filter device for nitrogen production | |
| CN213282728U (en) | Installation mechanism of electrostatic dust collector for smoke exhaust pipeline of thermal power plant | |
| CN220125733U (en) | Pulse dust collector convenient to overhaul | |
| CN218501584U (en) | Dust device falls in construction management environmental protection | |
| CN220019074U (en) | Flue gas sampling device | |
| CN219792959U (en) | High-altitude gas production device | |
| CN217082819U (en) | Building is warm to lead to and is used high-efficient ventilation unit | |
| CN212511609U (en) | Building energy-saving ventilation auxiliary device | |
| CN216343709U (en) | Extruder transmission case | |
| CN221109274U (en) | Powder ore bin cleaning device | |
| CN215909355U (en) | High-efficient supply-air outlet convenient to dismantle installation | |
| CN220648597U (en) | Movable plate for air conditioner access hole | |
| CN219692615U (en) | PVC pipeline plugging device | |
| CN220836832U (en) | Cleaning device for new forms of energy photovoltaic board | |
| CN214387325U (en) | Window groove cleaning device | |
| CN217594111U (en) | High-efficiency pulse dust collector for pollution prevention and control | |
| CN221086489U (en) | Multifunctional fermentation device | |
| CN220648552U (en) | Ventilation device of green building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |