Inorganic fiber spraying device for plateau severe cold area

Abstract

The invention provides an inorganic fiber spraying device for a plateau severe cold area, and belongs to the technical field of inorganic fiber spraying. The inorganic fiber spraying device in the plateau severe cold area comprises a material pipe, a support is installed at the front end of the material pipe, a conical cover is arranged at the front end of the support, a hot air cavity is formed in the conical cover, an annular opening is formed in the bottom end of the conical cover, a flow guide cover is connected to the rear end of the conical cover, a flow guide fan is arranged in the flow guide cover, and a hot air pipe is connected to the rear end of the flow guide cover. The inner wall face of the conical groove is arranged to be in a step shape in the axial direction, hot air holes are formed in the top face of the step at equal intervals in the circumferential direction, the front end of the support is sleeved with the flow guide cover and the conical cover, the front end of the support is provided with a channel opening used for inorganic fibers in the material pipe to enter the conical cover, and the inner diameter of the channel opening is larger than the outer diameter of the material pipe.

Description

Technical Field

[0001] The invention relates to the technical field of inorganic fiber spraying, and in particular to an inorganic fiber spraying device for plateau and severe cold regions. Background Art

[0002] Most inorganic fiber materials are non-toxic fireproof materials with flame retardant characteristics, suitable for use in areas with high fire protection requirements. At the same time, the construction of inorganic fiber materials is relatively convenient, the drying speed after construction is fast, and the service life is long. In addition, the spray layer formed by inorganic fiber spraying technology has multiple functions such as thermal insulation, vibration reduction and sound insulation, and Class A fire protection. It is an important thermal insulation and sound absorption material in modern construction and industrial fields.

[0003] Appropriate temperature is one of the most important factors affecting the construction quality of inorganic fiber spraying and the curing effect of materials. Generally, the construction temperature of inorganic fiber spraying should be between 5 and 35°C, and the optimal construction temperature is recommended to be above 20°C. Therefore, when carrying out inorganic fiber spraying in cold areas, it is necessary to set up a heat preservation shed, and use a heater, hot air gun or heat pump to raise the ambient temperature in the shed to a suitable temperature, and preheat the building wall to ensure that the inorganic fiber spraying operation is carried out at a suitable ambient temperature.

[0004] During the inorganic fiber spraying process, due to the simple structure of the existing nozzle and nozzle, the sprayed inorganic fibers are completely exposed to the environment and sprayed toward the wall after leaving the nozzle. At this time, a large amount of inorganic fibers will be scattered due to the influence of the airflow in the environment and the impact of the inorganic fibers on the foundation. The scattered inorganic fibers float in the working environment. Although the workers are equipped with masks or dust masks, the amount of scattered inorganic fibers is too large and it is still impossible to effectively avoid inhaling the inorganic fibers. At the same time, the inorganic fibers scattered in the environment need to be cleaned up a second time, resulting in a high intensity of secondary cleaning of the inorganic fibers.

[0005] For example, the existing patent 202021394993.2 provides a nozzle for inorganic fiber spray cotton, whose spraying distance can be adjusted and fixed, the spraying uniformity is good, the adaptability is high, and the spray splash can be collected at the same time, which saves materials and has splash protection, has good protection for operators, high practicality and high safety, including an operating rod, a plurality of positioning holes are opened on the outer wall of the operating rod, and positioning pins are installed in the positioning holes. A protective plate is slidably installed on the outer wall of the operating rod, and a sliding sleeve is slidably installed on the outer wall of the operating rod. A hanging rod is fixedly installed on the outer wall of the sliding sleeve, and a collection basket is axially rotatably installed at the front and rear ends of the hanging rod, and a bracket is fixedly installed on the left end of the operating rod, and the front and rear ends of the bracket are rotatably connected to support rods, and rollers are installed at the left ends of the two support rods.

[0006] The nozzle of the above-mentioned inorganic fiber spray cotton can control the distance between the nozzle and the working surface through the cooperation of the bracket, support rod and roller, so as to improve the uniformity of spraying. Through the cooperation of the stand, clamping rod and scraper, it is convenient to adjust the thickness after spraying, so as to adjust the spray thickness and improve practicality. Through the cooperation of the sliding sleeve, hanging rod and collection basket, it is convenient to collect the splashed and fallen inorganic fiber spray cotton, so as to improve the utilization rate of materials. Through the setting of the protective plate, it is convenient to improve the protection of the operator, so as to improve the safety of use.

[0007] However, not only is its structure complicated and not suitable for workers to hold it for a long time during inorganic fiber spraying operations, but also the flying inorganic fibers float everywhere, and it is difficult for the collection basket to effectively collect the flying inorganic fibers, especially when inorganic fiber spraying operations are performed on the roof or suspended ceiling of a building, the collection basket cannot collect the inorganic fibers.

[0008] In view of this, the present application provides an inorganic fiber spraying device for plateau and severe cold regions. Summary of the invention

[0009] In order to solve the above technical problems, the present invention proposes an inorganic fiber spraying device for plateau and severe cold regions.

[0010] The technical solution of the present invention is achieved in this way:

[0011] An inorganic fiber spraying device for plateau and extremely cold regions comprises a material pipe, a bracket is installed at the front end of the material pipe, a conical cover is arranged at the front end of the bracket, a hot air cavity is arranged in the conical cover, an annular opening is arranged at the bottom end of the conical cover, and a guide cover is connected to the rear end of the conical cover, a guide fan is arranged in the guide cover, a hot air pipe is connected to the rear end of the guide cover, the inner wall surface of the conical groove is arranged in a step shape along the axial direction, and hot air holes are arranged equidistantly on the top surface of the step along the circumferential direction, the guide cover and the conical cover are both sleeved on the front end of the bracket, and a passage opening for the inorganic fibers in the material pipe to enter the conical cover is arranged at the front end of the bracket, and the inner diameter of the passage opening is larger than the outer diameter of the material pipe.

[0012] Furthermore, a plurality of diverter plates distributed in a circular array are arranged in the hot air chamber, and the diverter plates divide the hot air chamber into a plurality of hot air channels in the circumferential direction, and the hot air holes are arranged in a row corresponding to each hot air channel in the axial direction of the conical cover, and the hole walls on both sides of each hot air hole are flush with the wall surfaces on both sides of the corresponding hot air channel.

[0013] Furthermore, the cone cover is rotatably sleeved on the front end of the bracket, the air guide cover is fixedly sleeved on the front end of the bracket, and a power component is installed outside the air guide cover, and the power component is used to drive the air guide fan and the cone cover to rotate synchronously.

[0014] Furthermore, a ring-shaped air outlet is arranged at the front end of the air deflector, and the hole walls at both inner and outer ends of the air outlet are both conical structures with the front end tilted inward, and the rear end of the conical cover is rotatably sleeved outside the air outlet.

[0015] Furthermore, the power component includes a first gear ring, a second gear ring, a first gear, a second gear, a synchronous shaft and a motor, the first gear ring and the second gear ring are respectively mounted on the outside of the guide fan and the conical cover, the first gear and the second gear are respectively meshed with the first gear ring and the second gear ring, the synchronous shaft connects the first gear and the second gear, and the power shaft of the motor is connected to the synchronous shaft, wherein a protective cover is installed on the outside of the guide cover, and the first gear, the second gear, the synchronous shaft and the motor are all installed on the protective cover.

[0016] Furthermore, a main body plate is provided inside the conical cover, and a scraper is provided on the outer side surface of the main body plate corresponding to each step, the outer side surface of the scraper is in contact with the side surface of the step, the ground of the scraper is in contact with the upper surface of the step, and the thickness of the scraper is smaller than the width of the hot air hole, and the bottom end of the main body plate is fixedly mounted on the front end of the bracket.

[0017] Furthermore, a collecting hood mounted on the outside of the conical hood is provided at the front end of the air guide hood, a collecting chamber is formed between the inner surface of the collecting hood and the outer surface of the conical hood, and a plurality of suction blades are equidistantly installed on the outer surface of the conical hood along the circumferential direction.

[0018] Furthermore, a cylindrical section is provided on the outer surface of the front end of the conical cover, and the suction fan blade is located at the rear side of the cylindrical section.

[0019] Furthermore, an air inlet section is provided at the rear end of the conical cover, and the inner wall surface of the air inlet section is flush with the inner wall surface of a circle of hot air holes located at the last end in the conical cover, and the outer wall surface of the air inlet section is a conical surface with the top end inclined inward, and the radius of the circle where the outer wall surface of the annular opening is located is larger than the radius of the circle where the outer hole wall of the circle of hot air holes located at the last end in the conical cover is located.

[0020] Furthermore, the bracket includes a front branch pipe and a rear branch pipe distributed front to back, a plurality of support plates distributed in a circular array are arranged between the front branch pipe and the rear branch pipe, the rear branch pipe is detachably mounted on the front end of the material pipe, and a gap is formed between two adjacent support plates for inserting a nozzle on the side of the material pipe, and the conical cover and the guide cover are both mounted on the front branch pipe.

[0021] The present invention has the following beneficial effects:

[0022] 1. By setting a conical cover to insulate the inorganic fibers ejected from the discharge pipe, the spraying effect and quality of the inorganic fibers in cold regions can be improved. At the same time, the conical cover can also reduce the degree of scattering of inorganic fibers, prevent workers from inhaling a large amount of inorganic fibers, and reduce the amount of inorganic fibers adhering to the working environment, reducing the intensity of secondary cleaning. In addition, the hot air blown out of the hot air hole can continue to blow the scattered inorganic fibers in the direction of injection, so that the scattered inorganic fibers can be re-sprayed onto the base layer.

[0023] 2. By setting up a collection hood, the inorganic fibers that are sprayed onto the wall and scattered around can be sucked into the collection hood for centralized collection, thereby reducing the amount of inorganic fibers scattered into the working environment, improving the working environment, protecting the health of workers, and reducing the intensity of secondary cleaning of inorganic fibers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the present invention;

[0025] Figure 2 The present invention Figure 1 A top view of

[0026] Figure 3 The present invention Figure 2 A magnified view of part A in FIG.

[0027] Figure 4 The present invention Figure 2 A cross-sectional view of

[0028] Figure 5 The present invention Figure 4 The enlarged view of point B in the figure;

[0029] Figure 6 The present invention Figure 4 The enlarged view of point C in the figure;

[0030] Figure 7 is a schematic diagram of the first gear ring and the second gear ring of the present invention;

[0031] Figure 8 The present invention Figure 7 A partial schematic diagram of

[0032] Fig. 9 is a schematic diagram of the stent of the present invention;

[0033] Fig.10 It is a schematic diagram of the annular opening and the hot air channel of the present invention.

[0034] In the figure: 1. material pipe; 2. bracket; 2-1. front branch pipe; 2-2. rear branch pipe; 2-3. support plate; 3. conical cover; 4. hot air chamber; 5. annular opening; 6. guide cover; 7. guide fan; 8. hot air pipe; 9. hot air hole; 10. channel opening; 11. diverter plate; 12. hot air channel; 13. power component; 13-1. first gear ring; 13-2. second gear ring; 13-3. first gear; 13-4. second gear; 13-5. synchronous shaft; 13-6. motor; 14. air outlet; 15. protective cover; 16. scraper; 17. collecting cover; 18. suction fan blade; 19. cylindrical section; 20. air inlet section; 21. main plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Fig.10 As shown, an inorganic fiber spraying device for plateau cold areas includes a material pipe 1, a bracket 2 is installed at the front end of the material pipe 1, a conical cover 3 is arranged at the front end of the bracket 2, a hot air cavity 4 is arranged in the conical cover 3, an annular opening 5 is arranged at the bottom end of the conical cover 3, and a guide cover 6 is connected to the rear end of the conical cover 3, a guide fan 7 is arranged in the guide cover 6, a hot air pipe 8 is connected to the rear end of the guide cover 6, the inner wall surface of the conical groove is arranged in a step shape along the axial direction, and the top surface of the step is equidistantly arranged with hot air holes 9 along the circumferential direction, the guide cover 6 and the conical cover 3 are both sleeved on the front end of the bracket 2, and a channel opening 10 for the inorganic fiber in the material pipe 1 to enter the conical cover 3 is arranged at the front end of the bracket 2, and the inner diameter of the channel opening 10 is larger than the outer diameter of the material pipe 1.

[0037] The air inlet section 20 of the hot air duct 8 can be connected to an external heating device, which can be a heater or an electric heater, and the hot air temperature is controlled between 20°C and 25°C. Of course, the external heating device is not limited to the above example, and it only needs to provide hot air at 20°C to 25°C. This is the prior art and will not be elaborated here.

[0038] The bracket 2 connects the conical cover 3 and the air guide cover 6 to the bracket 2, and at the same time, the air guide cover 6 is spaced apart from the outlet of the material pipe 1, and the spacing is applied to the normal operation of the nozzles on both sides of the material pipe 1 in the prior art.

[0039] The inorganic fibers sprayed from the material pipe 1 pass through the channel opening 10 and then pass through the inner cavity of the air guide cover 6 and are sprayed onto the building wall. After the hot air pipe 8 sends the hot air into the air guide cover 6, the air guide cover 6 blows away the hot air through the air guide fan 7 inside it, so that the hot air flows forward more evenly while maintaining the kinetic energy of the hot air, so that the hot air enters the hot air cavity 4 from the annular opening 5 more evenly and quickly, and then the hot air is sprayed out from the hot air hole 9.

[0040] Since the hot air hole 9 is located on the top surface of the step, the hot air ejected from the hot air hole 9 will be ejected forward, will not be interlaced with the inorganic fibers passing through the inner cavity of the air guide cover 6, and will not interfere with the inorganic fibers being ejected onto the wall.

[0041] The hot air can heat the cone cover 3 body and the cavity of the cone cover 3, so that the inorganic fiber has less heat loss from leaving the material pipe 1 to being sprayed onto the wall, so that the inorganic fiber can be evenly and stably attached to the substrate and achieve the best curing effect. It helps to ensure that the thickness of the inorganic fiber spray layer is uniform and the surface is smooth, thereby improving the overall thermal insulation and sound absorption performance.

[0042] At the same time, when the inorganic fibers are sprayed, the conical cover 3 is close to the wall surface, and the blown hot air can better stabilize the temperature of the wall surface, further improving the spraying effect of the inorganic limiter.

[0043] In addition, when the inorganic limiter leaves the material port and moves toward the wall, the conical cover 3 can also prevent the airflow of the external environment from disturbing the inorganic fibers, thereby improving the spraying effect of the inorganic fibers and reducing the phenomenon of inorganic fiber scattering. In particular, when the inorganic fibers scatter in the conical cover 3, they will continue to move toward the wall under the blowing effect of the hot air, and eventually gather into other inorganic fibers and be sprayed toward the wall.

[0044] This not only reduces the situation where inorganic fibers are disturbed by airflow in the external environment and cause them to fly, but also allows the scattered inorganic fibers to be sprayed onto the wall again to a certain extent. This effect is not only due to the cone cover 3 isolating the sprayed inorganic fibers from the external environment, but also reflects the advantages of the setting method that the inner wall surface of the cone cover 3 is set in a stepped shape and the hot air holes are set on the top of the steps, so that the hot air is always sprayed forward.

[0045] like Figure 4 and Fig.10As shown, in order to further improve the more uniform distribution of hot air after entering the hot air cavity and ensure that the hot air ejected from the hot air holes of the conical cover 3 in the circumferential direction is more uniform, a plurality of diverter plates 11 distributed in a circular array are arranged in the hot air cavity 4. The diverter plates 11 divide the hot air cavity 4 into a plurality of hot air channels 12 in the circumferential direction, and the hot air holes 9 are arranged in a row corresponding to each hot air channel 12 in the axial direction of the conical cover 3, and the two side hole walls of each hot air hole 9 are flush with the two side wall surfaces of the corresponding hot air channel 12.

[0046] In addition, through the above arrangement, the hot air at the hot air hole on the rear side will be greater in kinetic energy and density than the hot air ejected from the hot air hole on the front side. This is because the hot air hole on the rear side is closer to the guide fan 7, and the hot air in this part of the hot air hole needs less time to pass through the hot air hole, and the required circulation distance is shorter. The inorganic fibers scattered at the rear side of the inner cavity of the conical cover 3 are farther away from the wall. At this time, the hot air ejected from the hot air hole on the rear side has a stronger blowing force on the inorganic fibers scattered in this area, so as to ensure that the inorganic fibers in this area obtain greater energy and move forward a greater distance, so as to better achieve being ejected onto the wall again.

[0047] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the cone cover 3 is rotatably sleeved on the front end of the bracket 2, the air guide cover 6 is fixedly sleeved on the front end of the bracket 2, and a power component 13 is installed outside the air guide cover 6. The power component 13 is used to drive the air guide fan 7 and the cone cover 3 to rotate synchronously.

[0048] By rotating the air guide cover 6, each hot air hole 9 makes a circular motion, thereby achieving 360° blowing of hot air without dead angles in the circumferential direction, which not only improves the thermal insulation effect, but also makes the temperature in each place in the conical cover 3 more uniform, while improving the effect of blowing the scattered inorganic fibers forward.

[0049] At the same time, if the inorganic fibers scattered in the conical cover 3 want to adhere to the inner side wall of the conical cover 3, they will either adhere to the top surface of the step or the side of the step, and the inorganic fibers need to pass through the hot air holes 9 when they come into contact with the side of the step. Therefore, it is extremely difficult for the side of the step to be adhered by the scattered inorganic fibers. In addition, since the conical cover 3 is constantly rotating, the area between two adjacent hot air holes 9 in the circumferential direction of the top surface of the step will constantly change position during the circular motion of the hot air holes 9. During the process of adhering to the top surface of the step, the inorganic fibers will be blown forward by the moving hot air holes 9. Furthermore, after making the above arrangement, it is not easy for the inorganic fibers to adhere to the inner wall surface of the conical cover 3, which greatly improves the applicability of the device.

[0050] like Figure 6As shown, the front end of the air guide cover 6 is provided with an annular air outlet 14, and the inner and outer end hole walls of the air outlet 14 are both in a conical structure with the front end tilted inward, and the tail end of the conical cover 3 is rotatably sleeved outside the air outlet 14. By setting the air outlet 14, the flow rate of hot air entering the conical cover 3 through the air outlet 14 can be increased. In addition, the air guide cover 6 can improve the stability of the conical cover 3.

[0051] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the power component 13 includes a first gear ring 13-1, a second gear ring 13-2, a first gear 13-3, a second gear 13-4, a synchronization shaft 13-5 and a motor 13-6. The first gear ring 13-1 and the second gear ring 13-2 are respectively sleeved on the outside of the guide fan 7 and the conical cover 3, the first gear 13-3 and the second gear 13-4 are respectively meshed with the first gear ring 13-1 and the second gear ring 13-2, the synchronization shaft 13-5 connects the first gear 13-3 and the second gear 13-4, and the power shaft of the motor 13-6 is connected to the synchronization shaft 13-5, wherein a protective cover 15 is installed on the outside of the guide cover 6, and the first gear 13-3, the second gear 13-4, the synchronization shaft 13-5 and the motor 13-6 are all installed on the protective cover 15.

[0052] The protective cover 15 hides the first gear ring 13-1, the second gear ring 13-2, the first gear 13-3, the second gear 13-4 and the synchronous shaft 13-5 inside, which can avoid the occurrence of inorganic fiber adhesion and improve the effect of the device. After the motor 13-6 is running, the first gear 13-3 and the second gear 13-4 are driven to rotate synchronously through the synchronous shaft 13-5, and the first gear 13-3 and the second gear 13-4 respectively drive the first gear ring 13-1 and the second gear ring 13-2 to rotate synchronously, thereby causing the guide fan 7 and the cone cover 3 to rotate synchronously.

[0053] like Figure 3 As shown, a main body plate 21 is provided in the conical cover 3, and a scraper 16 is provided on the outer side surface of the main body plate 21 corresponding to each step, the outer side surface of the scraper 16 contacts the side surface of the step, the ground of the scraper 16 contacts the upper surface of the step, and the thickness of the scraper 16 is smaller than the width of the hot air hole 9, and the bottom end of the main body plate 21 is fixedly mounted on the front end of the bracket 2.

[0054] The scraper 16 can scrape off the inorganic fibers adhering to the inner wall surface of the conical cover 3, and the scraped inorganic fibers are ejected forward again under the action of hot air or the inorganic fibers ejected forward.

[0055] When spraying a vertical wall, the main plate 21 is kept at the top position of the inner cavity of the horizontally placed conical cover 3. In this state, the inorganic fibers scraped out by the scraper 16 will fall under the action of gravity, so that this part of the inorganic fibers can fall into the inorganic fibers being sprayed through the conical cover 3 and be sprayed again.

[0056] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the front end of the air guide hood 6 is provided with a collecting hood 17 which is sleeved on the outside of the conical hood 3, and a collecting chamber is formed between the inner surface of the collecting hood 17 and the outer surface of the conical hood 3. The outer surface of the conical hood 3 is provided with a plurality of suction blades 18 equidistantly installed along the circumferential direction.

[0057] If the inorganic fibers that leave the conical cover 3 and are sprayed onto the wall are scattered, they will pass through the front end cavity of the collecting chamber while leaving the central area in front of the conical cover 3 and scattering outward. At this time, the suction effect provided by the suction fan blades 18 that rotate with the conical cover 3 can draw the scattered inorganic fibers into the collecting chamber for collection, so as to prevent the inorganic fibers from polluting the environment and reduce the physical harm to the staff.

[0058] like Figure 5 and Figure 7 As shown, a cylindrical section 19 is provided on the front outer surface of the conical cover 3, and the suction blade 18 is located at the rear side of the cylindrical section 19. In this way, the cylindrical section 19 can isolate the negative pressure suction provided by the suction blade 18 from the front end cavity opening of the inner cavity of the conical cover 3, thereby preventing the negative pressure suction from affecting the inorganic fibers sprayed onto the wall surface from the front end of the conical cover 3.

[0059] like Figure 4 and Figure 6 As shown, the rear end of the conical cover 3 is provided with an air inlet section 20, the inner wall surface of the air inlet section 20 is flush with the inner wall surface of the circle of hot air holes 9 at the last end in the conical cover 3, the outer wall surface of the air inlet section 20 is a conical surface with the top end inclined inward, and the circumference radius of the outer wall surface of the annular opening 5 is greater than the circumference radius of the outer hole wall of the circle of hot air holes 9 at the last end in the conical cover 3. The air inlet section 20 can further increase the flow rate of the hot air entering the conical cover 3.

[0060] like Fig. 9 As shown, the bracket 2 includes a front branch pipe 2-1 and a rear branch pipe 2-2 distributed in front and back, and a plurality of support plates 2-3 distributed in a circular array are arranged between the front branch pipe 2-1 and the rear branch pipe 2-2. The rear branch pipe 2-2 is detachably sleeved on the front end of the material pipe 1, and a gap is formed between two adjacent support plates 2-3 for inserting the side nozzle of the material pipe 1. The conical cover 3 and the guide cover 6 are both sleeved on the front branch pipe 2-1.

[0061] Specifically, as one of the preferred methods, the front end of the material tube 1 is arranged to be threadedly matched with the shaft support tube, and the gap between the support plates 2-3 can also allow the staff to directly observe the state of the material tube 1 and the materials sprayed out of the nozzles on both sides of the material tube 1. In addition, the support plates 2-3 are arched, which is convenient for the staff to hold or support, and provide a better gripping position for the staff to stably hold the material tube 1 for inorganic fiber spraying operations, so as to better balance the weight of the front and rear ends of the material tube 1.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An inorganic fiber spraying device for plateau and severe cold regions, characterized in that: The invention comprises a material pipe (1), wherein a support (2) is installed at the front end of the material pipe (1), a conical cover (3) is arranged at the front end of the support (2), a hot air cavity (4) is arranged in the conical cover (3), an annular opening (5) is arranged at the bottom end of the conical cover (3), and a guide cover (6) is connected to the rear end of the conical cover (3), a guide fan (7) is arranged in the guide cover (6), and a hot air pipe (8) is connected to the rear end of the guide cover (6), the inner wall surface of the conical groove is arranged in a step shape along the axial direction, and the top surface of the step is provided with hot air holes (9) equidistantly arranged in the circumferential direction, the guide cover (6) and the conical cover (3) are both sleeved on the front end of the support (2), and a passage opening (10) for inorganic fibers in the material pipe (1) to enter the conical cover (3) is arranged at the front end of the support (2), and the inner diameter of the passage opening (10) is larger than the outer diameter of the material pipe (1).

2. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 1, characterized in that: The hot air chamber (4) is provided with flow dividers (11) which are distributed in a circular array. The flow dividers (11) divide the hot air chamber (4) into a plurality of hot air channels (12) in the circumferential direction. The hot air holes (9) are arranged in a row corresponding to each hot air channel (12) in the axial direction of the conical cover (3), and the hole walls on both sides of each hot air hole (9) are flush with the wall surfaces on both sides of the hot air channel (12) corresponding to the hot air channel (12).

3. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 1, characterized in that: The conical cover (3) is rotatably sleeved on the front end of the bracket (2), the air guide cover (6) is fixedly sleeved on the front end of the bracket (2), and a power component (13) is installed outside the air guide cover (6), and the power component (13) is used to drive the air guide fan (7) and the conical cover (3) to rotate synchronously.

4. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 3, characterized in that: The front end of the air guide cover (6) is provided with an annular air outlet (14), the inner and outer end hole walls of the air outlet (14) are both in a conical structure with the front end tilted inwards, and the rear end of the conical cover (3) is rotatably sleeved outside the air outlet (14).

5. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 3, characterized in that: The power component (13) comprises a first gear ring (13-1), a second gear ring (13-2), a first gear (13-3), a second gear (13-4), a synchronization shaft (13-5) and a motor (13-6); the first gear ring (13-1) and the second gear ring (13-2) are respectively sleeved on the outside of the guide fan (7) and the cone cover (3); the first gear (13-3) and the second gear (13-4) are respectively connected to the first gear ring (13-1) and the second gear (13-4). The first gear (13-3) and the second gear (13-4) are meshed with each other, the synchronizing shaft (13-5) is connected to the first gear (13-3) and the second gear (13-4), the power shaft of the motor (13-6) is connected to the synchronizing shaft (13-5), wherein a protective cover (15) is installed outside the air guide cover (6), and the first gear (13-3), the second gear (13-4), the synchronizing shaft (13-5) and the motor (13-6) are all installed on the protective cover (15).

6. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 3, characterized in that: A main body plate (21) is arranged inside the conical cover (3), and a scraper (16) is arranged on the outer side surface of the main body plate (21) corresponding to each step, the outer side surface of the scraper plate (16) contacts the side surface of the step, the ground of the scraper plate (16) contacts the upper surface of the step, and the thickness of the scraper plate (16) is smaller than the width of the hot air hole (9), and the bottom end of the main body plate (21) is fixedly mounted on the front end of the bracket (2).

7. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 3, characterized in that: A collecting hood (17) is provided at the front end of the air guide hood (6) and is sleeved on the outside of the conical hood (3); a collecting chamber is formed between the inner surface of the collecting hood (17) and the outer surface of the conical hood (3); and a plurality of suction blades (18) are equidistantly mounted on the outer surface of the conical hood (3) along a circumferential direction.

8. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 7, characterized in that: The front end outer surface of the conical cover (3) is provided with a cylindrical section (19), and the suction blade (18) is located at the rear side of the cylindrical section (19).

9. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 1, characterized in that: The conical cover (3) is provided with an air inlet section (20) at the rear end, the inner wall surface of the air inlet section (20) is flush with the inner wall surface of a circle of hot air holes (9) located at the rear end of the conical cover (3), the outer wall surface of the air inlet section (20) is a conical surface with the top end inclined inwards, and the radius of the circle where the outer wall surface of the annular opening (5) is located is greater than the radius of the circle where the outer hole wall of the circle of hot air holes (9) located at the rear end of the conical cover (3) is located.

10. The inorganic fiber spraying device for plateau and severe cold regions as claimed in claim 1, characterized in that: The support (2) comprises a front branch pipe (2-1) and a rear branch pipe (2-2) which are distributed in a front-to-back manner; a plurality of support plates (2-3) which are distributed in a circular array are arranged between the front branch pipe (2-1) and the rear branch pipe (2-2); the rear branch pipe (2-2) is detachably sleeved on the front end of the material pipe (1); a gap is formed between two adjacent support plates (2-3) for inserting a side nozzle of the material pipe (1); and the conical cover (3) and the guide cover (6) are both sleeved on the front branch pipe (2-1).

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