CN114103083A - PVC film blowing machine capable of adjusting internal pressure of film tube in film production process - Google Patents
PVC film blowing machine capable of adjusting internal pressure of film tube in film production process Download PDFInfo
- Publication number
- CN114103083A CN114103083A CN202111409934.7A CN202111409934A CN114103083A CN 114103083 A CN114103083 A CN 114103083A CN 202111409934 A CN202111409934 A CN 202111409934A CN 114103083 A CN114103083 A CN 114103083A
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- Prior art keywords
- fixedly connected
- film
- production process
- air
- pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of film blowing machines, and discloses a PVC film blowing machine capable of adjusting the internal pressure of a film tube in the film production process, which comprises a rack, wherein a vent pipe is fixedly connected in the middle of the rack, the top end of the vent pipe is fixedly connected with an air injection hole, the inside of the side wall of the vent pipe is fixedly connected with a mounting frame, the inside of the mounting frame is provided with a filter hole, the inside of the filter hole is slidably connected with a filter plate, the inside side wall of the mounting frame is provided with a chute, the inside of the chute is slidably connected with a slide block, the top end of the slide block is fixedly connected with a return spring, when the air flow in the vent pipe is weakened, an outer plate and an inner plate slide towards the inside of a pressure measuring air bin by the spring, the power of an air pump is improved, the inside of the vent pipe is inflated, and therefore, when the blowing air pressure of the blow molding machine is unstable, the inside of the vent pipe can be automatically inflated, the effect of atmospheric pressure stability when equipment blows is improved.
Description
Technical Field
The invention relates to the technical field of film blowing machines, in particular to a PVC film blowing machine capable of adjusting the internal pressure of a film tube in the film production process.
Background
In the production of PVC laminates, in order to improve production efficiency and maintain PVC film performance, the PVC laminates are often produced by blow molding, and in the process of blow molding, in order to prevent the plastic part from being damaged due to impurities on the surface of the plastic, it is necessary to filter air entering the interior of the PVC laminate while blow molding.
The filter mechanism of the existing blow molding machine needs to be manually cleaned or the filter screen needs to be replaced after the filter mechanism is used for a period of time, so that the working efficiency is reduced, the manufacturing cost is also improved, the air pressure for blowing air in the blow molding machine is reduced due to the fact that the surface of the filter screen is stained with dust, the output air pressure of the blow molding machine is unstable, and the quality of plastic parts is influenced.
The filter device is arranged on the side wall of the ventilation pipe, the automatic cleaning device is added in the filter device, so that the filter plate can be automatically cleaned when being blocked, the pressure measuring air bin is arranged in the ventilation pipe, the air pressure of the flowing air in the filter device can be constantly detected, when the flowing air in the filter device is reduced, the air can be supplemented to the inside of the filter device, and the effect of enabling the output air quantity to be stable is achieved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process, which has the advantages of automatically cleaning when a filter device is blocked, automatically adding air output quantity when the output air quantity is reduced, maintaining the output air pressure and the like, and solves the problems that the filter mechanism needs to be manually cleaned or the filter screen needs to be replaced after being used for a period of time, so that the working efficiency is reduced, the manufacturing cost is also improved, and the quality of plastic parts is influenced due to unstable output air pressure of the blow molding machine.
(II) technical scheme
In order to realize the purposes of automatically cleaning when the filter device is blocked and automatically adding the output quantity of air when the output air quantity is reduced so as to maintain the output air pressure, the invention provides the following technical scheme: a PVC film blowing machine capable of adjusting the pressure in a film tube in the film production process comprises a frame, wherein a ventilation tube is fixedly connected in the middle of the frame, an air jet hole is fixedly connected at the top end of the ventilation tube, a mounting frame is fixedly connected inside the side wall of the ventilation tube, a filtering hole is formed inside the mounting frame, a filtering plate is slidably connected inside the filtering hole, a chute is formed in the side wall of the mounting frame, a sliding block is slidably connected inside the chute, a reset spring is fixedly connected at the top end of the sliding block, a metal contact is fixedly connected to one side of the sliding block, which is close to the side wall of the chute, a metal strip is fixedly connected inside the chute, an air outlet is formed in one side of the mounting frame, which is close to the circle center of the ventilation tube, an one-way air valve is rotatably connected inside the air outlet, a slide rail is formed in the mounting frame, which is close to the upper side of the air outlet, the inside sliding connection of slide rail has the baffle, the liquid storehouse has been seted up to the inside of baffle, the lateral wall fixedly connected with shower nozzle of liquid storehouse, the ventilation pipe has been close to the outside of mounting bracket and has been seted up the gas storage storehouse, the inside fixedly connected with air pump in gas storage storehouse, one side fixedly connected with pressure boost hole that the gas storage storehouse is close to the ventilation pipe centre of a circle, the inside sliding connection in pressure boost hole has the baffler, the tip of baffler rotates and is connected with movable connecting rod, the pressure measurement gas storehouse has been seted up to the lateral wall of ventilation pipe, the inside sliding connection in pressure measurement gas storehouse has the planking, the inside sliding connection of planking has the inner panel, the tip fixedly connected with metal touch pole of inner panel, the inside lateral wall fixedly connected with resistance strip of planking.
Preferably, the filtering holes are communicated with the air outlet, and the mounting frame is provided with a groove at the outer side close to the filtering holes, so that outside air can enter the filtering holes and is discharged into the ventilating pipe through the air outlet.
Preferably, one side of the return spring far away from the sliding block is fixedly connected to the end part of the sliding groove, and the sliding block can slide towards the outer side of the sliding groove under the driving of the return spring.
Preferably, the metal contact is connected with a power supply, the metal strip is connected with the spray head through an electric wire, and the metal contact can be in contact with the metal strip when moving to the bottom end under the driving of the sliding block, so that the spray head can start to work to clean the surface of the filter plate.
Preferably, the end of the baffle is fixedly connected with a piston, the diameter of the piston is the same as the inner diameter of the slide rail, and when the air pressure in the slide rail is increased, the piston can be pushed to slide inwards to push the baffle to the inside of the mounting frame.
Preferably, the liquid bin is connected with the cleaning liquid tank through a hose, the spray head faces the surface of the filter plate, and when the spray head starts to work, the solution in the liquid bin can be sprayed on the surface of the filter plate.
Preferably, the inside in pressure boost hole is seted up flutedly, separation plate sliding connection is in the inside of recess, pressure measurement gas storehouse is narrow outside wide recess in, and separation plate is the same with the diameter in pressure boost hole for separation plate can block up pressure boost hole, and can utilize the air pump to inside pressure boost when inside atmospheric pressure reduces, improve equipment's stability.
Preferably, the metal feeler lever is connected to the surface of the resistor strip in a sliding manner, the metal feeler lever is connected with a power supply, the outer end of the resistor strip is connected with an internal resistor of the air pump through an electric wire, the metal feeler lever can enable the resistance connected to the air pump circuit to be reduced when sliding towards the outer end part of the resistor strip, and the working efficiency of the air pump starts to be improved.
Preferably, the end, far away from the baffler, of the movable connecting rod is connected with the outer plate in a rotating mode, the number of the inner plates is two, and the springs are fixedly connected between the two inner plates, so that when the outer plate slides in the pressure measuring air chamber, the inner plates can be in contact with the inner side wall of the pressure measuring air chamber.
(III) advantageous effects
Compared with the prior art, the invention provides the PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process, and the PVC film blowing machine has the following beneficial effects:
1. this can adjust PVC inflation film manufacturing machine of intraductal pressure of membrane in film production process, when weakening through the inside air current of ventilation pipe, planking and inner panel are slided to the inside in pressure measurement gas storehouse by the spring, and air pump power improves this moment, inflates the inside of ventilation pipe to reached and to have inflated the inside of ventilation pipe automatically when blowing the atmospheric pressure unstability at the blowing machine, improved the effect of atmospheric pressure stability when equipment blows.
2. This can adjust PVC inflation film manufacturing machine of intraductal pressure of membrane in film production process, the inside atmospheric pressure of filtration pore reduces when taking place to block up through the filter, and filter and baffle slide to inside this moment, and when the slider slides to the bottom, metal contact and metal strip contact each other, the shower nozzle cleans the surface of filter to reached and to have washed it automatically when filter equipment takes place to block up, improved work efficiency, reduced cost of maintenance's effect.
Drawings
FIG. 1 is a schematic front perspective view of the blowing device of the present invention;
FIG. 2 is a cross-sectional structural schematic view of a vent tube of the present invention;
FIG. 3 is a schematic cross-sectional front view of the filter mechanism of the present invention;
FIG. 4 is a schematic cross-sectional front view of a pressure sensing baffle according to the present invention;
FIG. 5 is a schematic sectional elevational view of the filter mechanism of the present invention in normal operation;
FIG. 6 is a schematic sectional front view showing the filter mechanism of the present invention clogged.
In the figure: 1. a frame; 2. a vent pipe; 3. a gas injection hole; 4. a mounting frame; 5. a filtration pore; 6. a filter plate; 7. a chute; 8. a slider; 9. a return spring; 10. a metal contact; 11. a metal strip; 12. an air outlet; 13. a one-way air valve; 14. a slide rail; 15. a baffle plate; 16. a liquid bin; 17. a spray head; 18. a gas storage bin; 19. an air pump; 20. a pressurizing hole; 21. a barrier plate; 22. a movable connecting rod; 23. a pressure measuring gas bin; 24. an outer plate; 25. an inner plate; 26. a metal feeler lever; 27. a resistive strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
please refer to fig. 1-3, a can adjust PVC inflation film manufacturing machine of membrane intraductal pressure in film production process, including frame 1, the middle fixedly connected with ventilation pipe 2 of frame 1, the top fixedly connected with fumarole 3 of ventilation pipe 2, the inside fixedly connected with mounting bracket 4 of 2 lateral walls of ventilation pipe, filter hole 5 has been seted up to the inside of mounting bracket 4, filter hole 5 and air outlet 12 communicate each other, mounting bracket 4 is close to the outside of filtering hole 5 and is seted up flutedly, make external air can get into and filter hole 5, and discharge the inside of ventilation pipe 2 through air outlet 12.
The inside sliding connection who crosses filtration pore 5 has filter 6, and spout 7 has been seted up to the inside lateral wall of mounting bracket 4, and the inside sliding connection of spout 7 has slider 8, and slider 8's top fixedly connected with reset spring 9, one side fixed connection that slider 8 was kept away from to reset spring 9 are at the tip of spout 7, and slider 8 can slide to the outside of spout 7 under reset spring 9's drive.
One side fixedly connected with metal contact 10 that slider 8 is close to 7 lateral walls of spout, the inside fixedly connected with metal strip 11 of spout 7, metal contact 10 is connected with the power, and metal strip 11 passes through the electric wire and is connected with shower nozzle 17, and metal contact 10 can contact each other with metal strip 11 when slider 8 drives down and moves to the bottom for shower nozzle 17 can begin work, washs the surface of filter 6.
Example two:
please refer to fig. 5-6, a PVC film blowing machine capable of adjusting the pressure in the film tube during the film production process, wherein an air outlet 12 is provided at one side of the mounting frame 4 close to the center of the circle of the ventilation tube 2, the inside of the air outlet 12 is rotatably connected with a one-way air valve 13, a slide rail 14 is provided at the upper side of the mounting frame 4 close to the air outlet 12, a baffle 15 is slidably connected inside the slide rail 14, a piston is fixedly connected to the end of the baffle 15, the diameter of the piston is the same as the inside diameter of the slide rail 14, when the air pressure inside the slide rail 14 is increased, the piston can be pushed to slide inside, and the baffle 15 is pushed to the inside of the mounting frame 4.
The gas storage bin 18 has been seted up in the outside that ventilation pipe 2 is close to mounting bracket 4, the inside fixedly connected with air pump 19 of gas storage bin 18, one side fixedly connected with pressure boost hole 20 that gas storage bin 18 is close to the ventilation pipe 2 centre of a circle, the recess has been seted up to the inside in pressure boost hole 20, baffle 21 sliding connection is in the inside of recess, and baffle 21 is the same with the diameter in pressure boost hole 20, make baffle 21 can block up pressure boost hole 20, and utilize air pump 19 to the inside pressure boost when can inside atmospheric pressure reduce, improve equipment's stability.
Example three:
referring to fig. 2-4, a PVC film blowing machine capable of adjusting the pressure in a film tube during the production of a film, wherein the inner part of a pressurizing hole 20 is slidably connected with a baffle plate 21, the end part of the baffle plate 21 is rotatably connected with a movable connecting rod 22, the side wall of a ventilation tube 2 is provided with a pressure measuring air chamber 23, the pressure measuring air chamber 23 is a groove with a narrow inner part and a wide outer part, the inner part of the pressure measuring air chamber 23 is slidably connected with an outer plate 24, the inner part of the outer plate 24 is slidably connected with an inner plate 25, one end of the movable connecting rod 22 far away from the baffle plate 21 is rotatably connected with the outer plate 24, the number of the inner plates 25 is two, and springs are fixedly connected between the two inner plates 25, so that when the outer plate 24 slides in the pressure measuring air chamber 23, the inner plates 25 can contact with the inner side wall of the pressure measuring air chamber 23.
End fixedly connected with metal feeler lever 26 of inner panel 25, the inside lateral wall fixedly connected with resistance strip 27 of planking 24, metal feeler lever 26 sliding connection is on the surface of resistance strip 27, and metal feeler lever 26 is connected with the power, and the inner resistance of electric wire and air pump 19 is passed through to the outer end of resistance strip 27 and is connected, and metal feeler lever 26 can make the resistance that inserts the air pump 19 circuit diminish when sliding to the outer tip of resistance strip 27, and the work efficiency of air pump 19 begins to improve.
When the device is used, when the device starts to work, outside air can enter the inside of the ventilation pipe 2 through the air outlet 12, at the moment, the flow rate of the gas inside the ventilation pipe 2 is high, the pressure inside the ventilation pipe is low, the pressure inside the pressure measuring gas bin 23 pushes the outer plate 24 and the inner plate 25 to move outwards, when the flow rate of the gas inside the ventilation pipe 2 is reduced, the internal air pressure is increased, the outer plate 24 slides towards the inside of the pressure measuring gas bin 23 under the action of the spring, because the pressure measuring gas bin 23 is a tapered groove with a narrow inside and a wide outside, the inner plate 25 inside the outer plate 24 stretches out outwards under the action of the spring, at the moment, the metal contact rod 26 at the end part of the inner plate 25 slides towards the outside of the resistance strip 27, the resistance connected to the internal circuit of the air pump 19 is reduced, the power of the air pump 19 is improved, and at the moment, the outer plate 24 drives the baffle plate 21 to be separated from the pressurizing hole 20 through the movable connecting rod 22, and the air pump 19 inflates the inside of the ventilation pipe 2, the stability of the air pressure in the blow molding machine is improved;
when air passes through the inside of the filter holes 5, dust in the air can be filtered by the filter plate 6, when the dust on the surface of the filter plate 6 is accumulated too much to cause blockage, the air pressure inside the filter holes 5 is reduced, the air pressure on the outer side pushes the filter plate 6 to slide towards the inside of the filter holes 5, the end part of the filter plate 6 is fixedly connected with a slide block 8, so that the slide block 8 can be driven to slide inwards, the side surface of the slide block 8 is fixedly connected with a metal contact 10, when the slide block 8 slides to the bottom end, the metal contact 10 can be in contact with a metal strip 11, the metal contact 10 is connected with a power supply, the metal strip 11 is connected with a spray head 17 through an electric wire, the spray head 17 starts to work, and at the moment, because the air pressure inside the filter holes 5 is small, the baffle 15 can be pushed to the inside of the mounting frame 4, so that the spray head 17 can clean the surface of the filter plate 6, and the filter plate 6 can be automatically cleaned, the effect of the running stability of the equipment is improved.
In conclusion, according to the PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process, when the air flow in the ventilation tube 2 is weakened, the outer plate 24 and the inner plate 25 slide towards the inside of the pressure measurement air bin 23 by the springs, the power of the air pump 19 is improved at the moment, and the inside of the ventilation tube 2 is inflated, so that the effect that when the blowing air pressure of the blow molding machine is unstable, the inside of the ventilation tube 2 can be automatically inflated, and the air pressure stability of the device during blowing is improved is achieved.
This can adjust PVC inflation film manufacturing machine of intraductal pressure of membrane in film production process, take place to block up through filter 6 the inside atmospheric pressure of filtration pore 5 reduces, filter 6 and baffle 15 slide to inside this moment, when slider 8 slides to the bottom, metal contact 10 and 11 mutual contacts of metal strip, shower nozzle 17 cleans the surface of filter 6, thereby reached and to have washed it automatically when filter equipment takes place to block up, and the work efficiency is improved, and the maintenance cost's effect is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a can adjust PVC inflation film manufacturing machine of interior pressure of film tube in film production process, includes frame (1), its characterized in that: the middle of the rack (1) is fixedly connected with a ventilation pipe (2), the top end of the ventilation pipe (2) is fixedly connected with an air injection hole (3), the inner part of the side wall of the ventilation pipe (2) is fixedly connected with a mounting frame (4), the inner part of the mounting frame (4) is provided with a filtering hole (5), the inner part of the filtering hole (5) is slidably connected with a filtering plate (6), the inner side wall of the mounting frame (4) is provided with a chute (7), the inner part of the chute (7) is slidably connected with a sliding block (8), the top end of the sliding block (8) is fixedly connected with a reset spring (9), one side of the sliding block (8) close to the side wall of the chute (7) is fixedly connected with a metal contact (10), the inner part of the chute (7) is fixedly connected with a metal strip (11), one side of the mounting frame (4) close to the circle center of the ventilation pipe (2) is provided with an air outlet (12), the air outlet structure is characterized in that a one-way air valve (13) is rotatably connected to the inside of the air outlet (12), a sliding rail (14) is arranged on the upper side, close to the air outlet (12), of the mounting frame (4), a baffle (15) is slidably connected to the inside of the sliding rail (14), a liquid bin (16) is arranged inside the baffle (15), a spray head (17) is fixedly connected to the side wall of the liquid bin (16), a gas storage bin (18) is arranged on the outer side, close to the mounting frame (4), of the ventilation pipe (2), a gas pump (19) is fixedly connected to the inside of the gas storage bin (18), a pressurizing hole (20) is fixedly connected to one side, close to the circle center of the ventilation pipe (2), of the gas storage bin (18), a blocking plate (21) is slidably connected to the inside of the pressurizing hole (20), a movable connecting rod (22) is rotatably connected to the end of the blocking plate (21), and a pressure measuring gas bin (23) is arranged on the side wall of the ventilation pipe (2), the inside sliding connection of pressure measurement gas storehouse (23) has planking (24), the inside sliding connection of planking (24) has inner panel (25), the tip fixedly connected with metal feeler lever (26) of inner panel (25), the inside lateral wall fixedly connected with resistance strip (27) of planking (24).
2. The PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process according to claim 1, characterized in that: the filtering holes (5) are communicated with the air outlet (12), and grooves are formed in the outer side, close to the filtering holes (5), of the mounting rack (4).
3. The PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process according to claim 1, characterized in that: one side of the return spring (9) far away from the sliding block (8) is fixedly connected with the end part of the sliding groove (7).
4. The PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process according to claim 1, characterized in that: the metal contact (10) is connected with a power supply, and the metal strip (11) is connected with the spray head (17) through an electric wire.
5. The PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process according to claim 1, characterized in that: the end part of the baffle (15) is fixedly connected with a piston, and the diameter of the piston is the same as the inner diameter of the sliding rail (14).
6. The PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process according to claim 1, characterized in that: the liquid bin (16) is connected with the cleaning liquid tank through a hose, and the spray head (17) faces the surface of the filter plate (6).
7. The PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process according to claim 1, characterized in that: the pressure measurement air chamber is characterized in that a groove is formed in the pressurizing hole (20), the blocking plate (21) is connected to the inside of the groove in a sliding mode, the blocking plate (21) and the pressurizing hole (20) are the same in diameter, and the pressure measurement air chamber (23) is a groove which is narrow in inner portion and wide in outer portion.
8. The PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process according to claim 1, characterized in that: the metal feeler lever (26) is connected to the surface of the resistance strip (27) in a sliding manner, the metal feeler lever (26) is connected with a power supply, and the outer end of the resistance strip (27) is connected with the internal resistance of the air pump (19) through an electric wire.
9. The PVC film blowing machine capable of adjusting the internal pressure of the film tube in the film production process according to claim 1, characterized in that: one end, far away from the barrier plate (21), of the movable connecting rod (22) is rotatably connected with the outer plate (24), the number of the inner plates (25) is two, and a spring is fixedly connected between the two inner plates (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111409934.7A CN114103083A (en) | 2021-11-25 | 2021-11-25 | PVC film blowing machine capable of adjusting internal pressure of film tube in film production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111409934.7A CN114103083A (en) | 2021-11-25 | 2021-11-25 | PVC film blowing machine capable of adjusting internal pressure of film tube in film production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114103083A true CN114103083A (en) | 2022-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111409934.7A Withdrawn CN114103083A (en) | 2021-11-25 | 2021-11-25 | PVC film blowing machine capable of adjusting internal pressure of film tube in film production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114103083A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870519A (en) * | 2022-05-23 | 2022-08-09 | 西安热工研究院有限公司 | Energy-saving and environment-friendly gas emission and purification device |
-
2021
- 2021-11-25 CN CN202111409934.7A patent/CN114103083A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870519A (en) * | 2022-05-23 | 2022-08-09 | 西安热工研究院有限公司 | Energy-saving and environment-friendly gas emission and purification device |
| CN114870519B (en) * | 2022-05-23 | 2024-04-09 | 西安热工研究院有限公司 | Energy-saving environment-friendly gas emission purifying device |
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Application publication date: 20220301 |