A polyurethane spraying device for cold storage construction

Abstract

This utility model discloses a polyurethane spraying device for cold storage construction, belonging to the field of cold storage construction. The polyurethane spraying device for cold storage construction includes a device frame, an automatic dust collection mechanism on the surface of the device frame, height adjustment mechanisms on the inner wall of the moving frame and the surface of the support frame, and a preheating and stirring mechanism inside the material bin. This utility model not only avoids the phenomenon of dust affecting the waterproof and heat-insulating effect of polyurethane spraying, resulting in better heat insulation and waterproofing effects for the cold storage, but also allows for thorough mixing of high-viscosity polyurethane during use, effectively improving foaming and spraying effects. Furthermore, the device allows for adjustment of the height of the support frame and nozzle according to the needs of spraying the cold storage walls, resulting in higher spraying efficiency and shorter working time.

Description

Technical Field

[0001] This utility model relates to the field of cold storage construction technology, and in particular to a polyurethane spraying device for cold storage construction. Background Technology

[0002] Cold storage facilities, used for the constant temperature and humidity storage of food, liquids, chemicals, pharmaceuticals, vaccines, and scientific experiments, often require the use of spraying equipment to coat the walls with polyurethane material that provides thermal insulation and waterproofing. Existing spraying equipment is typically handheld, resulting in uneven application and affecting construction quality, thus compromising the waterproofing and insulation performance of the cold storage. To meet market demands, a polyurethane spraying device for cold storage construction is needed.

[0003] A search revealed Chinese patent authorization number 202420084286.5, which discloses a polyurethane spraying device for cold storage construction, including a platform vehicle, a spray nozzle, a heating component, a mixing component, and a lifting component. The platform vehicle is equipped with a spray nozzle, a heating component, and a mixing component. The polyurethane spraying device for cold storage construction described in this patent has the following shortcomings: Existing spraying devices typically lack automatic dust extraction, which can easily lead to dust affecting the waterproofing and insulation effects of the sprayed polyurethane, thus reducing its effectiveness in insulating and waterproofing the cold storage. Furthermore, the preheating and mixing effects of existing spraying devices are insufficient, reducing the foaming and spraying efficiency of the polyurethane and failing to reduce particle size in the mixture, easily causing nozzle clogging. Utility Model Content

[0004] The purpose of this invention is to solve the problems of existing spraying devices, such as the lack of automatic dust collection, insufficient preheating and mixing effect, and inconvenience in adjusting the spraying height. Therefore, this invention proposes a polyurethane spraying device for cold storage construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A polyurethane spraying device for cold storage construction includes a device frame, a material bin mounted on the surface of the device frame, a movable frame disposed on the surface of the device frame, the movable frame slidingly engaging with the surface of the device frame, an mounting box mounted on the top of the material bin via screws, a support frame disposed on the surface of the movable frame, a spray nozzle disposed on the surface of the support frame, a collection frame disposed on the surface of the movable frame via screws, an automatic dust collection mechanism disposed on the surface of the device frame, a height adjustment mechanism disposed on the inner wall of the movable frame and the surface of the support frame, and a preheating and stirring mechanism disposed inside the material bin.

[0006] As a preferred technical solution of this application, a temperature sensor is installed on the inner wall of the material box, a feeding frame is installed on the surface of the top of the material box, a feeding pipe is installed on the surface of the feeding frame, and one end of the feeding pipe extends into the interior of the material box and is connected to the interior of the feeding frame. A driven pulley and a driving pulley are installed inside the mounting box. The driving pulley and the driven pulley are respectively rotatably engaged with the inner wall of the mounting box. A belt body is fitted onto the surface of the driving pulley and the driven pulley. A drive motor is installed on the inner wall of the mounting box. A rotating shaft is installed at the output end of the drive motor through a coupling, and one end of the rotating shaft passes through the surface of the center position of the driving pulley and is fixed. The nozzle is rotatably engaged with the inner wall of the support frame. A rotating motor is installed on the surface of the support frame, and a shaft is installed at the output end of the rotating motor through a coupling. One end of the device frame passes through the support frame and is fixed to the surface of the nozzle. A guide frame is installed on the surface of the top position of the movable frame. A holding box is installed on the surface of the top position of the device frame. A pump body is installed inside the holding box. The input end of the pump body passes through the material box and extends into the inside of the material box. A telescopic hose is installed on the output end of the pump body. One end of the telescopic hose passes through the guide frame and is connected to the inside of the nozzle. A lead screw body is installed inside the device frame. The lead screw body rotates with the inner wall of the device frame. A lead screw nut is threaded on the surface of the lead screw body. The lead screw nut slides with the inner wall of the device frame. The surface of the lead screw nut is fixed to the surface of the bottom position of the movable frame. A servo motor is installed on the surface of the device frame. A rotating rod is installed at the output end of the servo motor through a coupling. One end of the rotating rod passes through the device frame and is fixed to the surface of the lead screw body.

[0007] As a preferred technical solution of this application, the automatic dust collection mechanism consists of a dust collection fan, a fixed box, a dust collection hood, a dust collection box, a filter screen, and a frame. The dust collection box is installed on the surface of the top position of the device frame. The dust collection box has a frame for collecting dust inside. The frame and the inner wall of the dust collection box slide against each other. The filter screen is installed on the inner wall of the dust collection box by screws. The fixed box is installed on the surface of the top position of the dust collection box.

[0008] As a preferred technical solution of this application, a dust collection fan is installed inside the fixed box, the output end of the dust collection fan extends into the interior of the dust collection box, a dust collection hood is installed at the input end of the dust collection fan, the surface of the dust collection hood is fixed to the surface of the material box, the dust collection hood is connected to the interior of the dust collection fan, and a door is provided on the surface of the dust collection box, and the door is detachably connected to the surface of the dust collection box.

[0009] As a preferred technical solution of this application, the height adjustment mechanism is composed of a fixed cylinder, an electric push rod, a guide groove, a fixed groove and an adjustment block. The surface of the movable frame is provided with a fixed groove, the fixed cylinder is installed inside the fixed groove, and the electric push rod is installed inside the fixed cylinder.

[0010] As a preferred technical solution of this application, an adjusting block is provided inside the fixing groove, the adjusting block slides with the inner wall of the fixing groove, the output end of the electric push rod is fixed to the surface at the bottom of the adjusting block, the surface of the adjusting block is fixed to the surface of the support frame, and the inner wall of the fixing cylinder is provided with guide grooves, the guide grooves slide with the surface of the adjusting block.

[0011] As a preferred technical solution of this application, the preheating and stirring mechanism is composed of a stirring rod, a heating plate, a stirrer, a fixed plate, a scraper and a telescopic column. The material box is equipped with a stirrer inside. The stirrer and the inner wall of the material box rotate and cooperate with each other. The top of the stirrer extends into the interior of the mounting box and is fixed to the surface at the center of the driven pulley. The surface of the stirrer is equipped with stirring rods at equal intervals for stirring polyurethane.

[0012] As a preferred technical solution of this application, heating elements are installed on the inner wall of the material box, a fixing plate is installed on the surface of the agitator, a scraper is provided below the fixing plate, the surface of the scraper at the bottom position is in contact with the inner wall of the material box, and a telescopic column is installed on the surface of the fixing plate at the bottom position, the bottom end of the telescopic column is fixed to the surface of the scraper.

[0013] Compared with the prior art, this utility model provides a polyurethane spraying device for cold storage construction, which has the following beneficial effects: 1. The polyurethane spraying device used for cold storage construction, through its automatic dust collection mechanism, can prevent dust from affecting the waterproof and heat-insulating effect of the polyurethane spraying, thus making the sprayed polyurethane have a better heat-insulating and waterproof effect on the cold storage. This solves the problem that existing technologies usually do not have an automatic dust collection function. 2. The polyurethane spraying device used for cold storage construction, through the preheating and stirring mechanism, enables thorough mixing of polyurethane with high viscosity, which can effectively improve the foaming and spraying effect. At the same time, it can reduce the particles in the mixture and prevent the nozzle from being blocked, thus solving the problem of insufficient preheating and stirring effect in the existing technology. 3. The polyurethane spraying device used for cold storage construction, through its height adjustment mechanism, enables the height of the support frame and nozzle to be adjusted according to the needs of spraying the cold storage walls. This makes the spraying device more efficient in spraying polyurethane and shortens the working time, thus solving the problem of inconvenient height adjustment in the existing technology. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is an enlarged side view sectional diagram of the present invention; Figure 4 For the present utility model Figure 2 Enlarged structural diagram of the automatic vacuuming mechanism; Figure 5 For the present utility model Figure 2 Enlarged schematic diagram of the height adjustment mechanism; Figure 6 For the present utility model Figure 2 A magnified schematic diagram of the preheating and stirring mechanism.

[0015] In the picture: 1. Device frame; 101. Controller; 102. Material bin; 103. Collection frame; 104. Temperature sensor; 105. Feeding frame; 106. Mounting box; 107. Drive motor; 108. Driven pulley; 109. Nozzle; 110. Moving frame; 111. Pump body; 112. Container; 113. Servo motor; 114. Telescopic hose; 115. Guide frame; 116. Belt body; 117. Drive pulley; 118. Support frame; 119. Screw screw 1. Mother; 120. Lead screw body; 121. Rotary motor; 2. Automatic dust collection mechanism; 21. Dust collection fan; 22. Fixed box; 23. Dust collection hood; 24. Dust collection box; 25. Filter screen; 26. Frame; 3. Height adjustment mechanism; 31. Fixed cylinder; 32. Electric push rod; 33. Guide groove; 34. Fixed groove; 35. Adjusting block; 4. Preheating and stirring mechanism; 41. Stirring rod; 42. Heating plate; 43. Stirrer; 44. Fixed plate; 45. Scraper; 46. Telescopic column. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0017] Reference Figure 1-3A polyurethane spraying device for cold storage construction includes a device frame 1, a material bin 102 mounted on the surface of the device frame 1, a controller 101 (e.g., LA series) mounted on the surface of the material bin 102, a movable frame 110 (sliding engagement with the surface of the device frame 1) mounted on the surface of the device frame 1, a collection frame 103 mounted on the surface of the movable frame 110 by screws, a temperature sensor 104 (e.g., PT series) mounted on the inner wall of the material bin 102, the output terminal of the temperature sensor 104 being electrically connected to the input terminal of the controller 101, and a feeding frame 105 mounted on the top surface of the material bin 102, with a feeding mechanism mounted on the surface of the feeding frame 105. The feed pipe extends into the interior of the material box 102 and is connected to the interior of the feed frame 105. A mounting box 106 is screwed onto the surface of the top of the material box 102. A driven pulley 108 and a driving pulley 117 are both located inside the mounting box 106. The driving pulley 117 and the driven pulley 108 rotate relative to each other with the inner wall of the mounting box 106. A belt body 116 is fitted onto the surfaces of the driving pulley 117 and the driven pulley 108. A drive motor 107 (e.g., JO series) is mounted on the inner wall of the mounting box 106. The input terminal of the drive motor 107 is electrically connected to the output terminal of the controller 101. The output end of the 7 is equipped with a rotating shaft via a coupling, and one end of the rotating shaft passes through the surface of the center position of the drive pulley 117 and is fixed thereto. A support frame 118 is provided on the surface of the movable frame 110, and a nozzle 109 is provided on the surface of the support frame 118. The nozzle 109 rotates with the inner wall of the support frame 118. A rotary motor 121 is mounted on the surface of the support frame 118. The rotary motor 121 can be a JO series model. The input end of the rotary motor 121 is electrically connected to the output end of the controller 101. A shaft is mounted on the output end of the rotary motor 121 via a coupling, and one end of the shaft passes through the support frame 118 and is fixed to the surface of the nozzle 109. A guide frame 115 is mounted on the surface of the top position of the movable frame 110. The device frame 1... A container 112 is mounted on the top surface, and a pump body 111 is installed inside the container 112. The pump body 111 can be of the SLG series. The input end of the pump body 111 is electrically connected to the output end of the controller 101. The input end of the pump body 111 passes through the material box 102 and extends into the interior of the material box 102. A telescopic hose 114 is installed at the output end of the pump body 111. One end of the telescopic hose 114 passes through the guide frame 115 and communicates with the interior of the nozzle 109. A lead screw body 120 is installed inside the device frame 1. The lead screw body 120 rotates with the inner wall of the device frame 1. A lead screw nut 119 is threaded on the surface of the lead screw body 120 and slides with the inner wall of the device frame 1.The surface of the lead screw nut 119 is fixed to the surface at the bottom of the moving frame 110. A servo motor 113 is mounted on the surface of the device frame 1. The servo motor 113 can be of the HF series. The input end of the servo motor 113 is electrically connected to the output end of the controller 101. A rotating rod is mounted on the output end of the servo motor 113 via a coupling, and one end of the rotating rod passes through the device frame 1 and is fixed to the surface of the lead screw body 120.

[0018] Reference Figure 2 and Figure 4 Furthermore, the device frame 1 is equipped with an automatic dust collection mechanism 2. The automatic dust collection mechanism 2 consists of a dust collection fan 21, a fixed box 22, a dust collection hood 23, a dust collection box 24, a filter screen 25, and a frame 26. The dust collection box 24 is mounted on the top surface of the device frame 1. The dust collection box 24 contains a frame 26 for collecting dust, and the frame 26 slides against the inner wall of the dust collection box 24. A filter screen 25 is mounted on the inner wall of the dust collection box 24 using screws. A fixed box 25 is mounted on the top surface of the dust collection box 24. The dust collection box 22 is equipped with a dust extraction fan 21, which can be a DF series model. The input of the dust extraction fan 21 is electrically connected to the output of the controller 101. The output of the dust extraction fan 21 extends into the dust collection box 24. A dust extraction hood 23 is installed at the input of the dust extraction fan 21. The surface of the dust extraction hood 23 is fixed to the surface of the material box 102 and is connected to the interior of the dust extraction fan 21. The surface of the dust collection box 24 is provided with a door, and the door is detachably connected to the surface of the dust collection box 24. By setting up an automatic dust extraction mechanism, the phenomenon that dust affects the waterproof and heat insulation effect of polyurethane spraying can be avoided, resulting in better heat insulation and waterproofing effects of the sprayed polyurethane for cold storage.

[0019] Reference Figure 2 and Figure 5Furthermore, the inner wall of the movable frame 110 and the surface of the support frame 118 are provided with a height adjustment mechanism 3. The height adjustment mechanism 3 consists of a fixed cylinder 31, an electric push rod 32, a guide groove 33, a fixed groove 34, and an adjustment block 35. The surface of the movable frame 110 is provided with a fixed groove 34, and a fixed cylinder 31 is installed inside the fixed groove 34. An electric push rod 32 is installed inside the fixed cylinder 31. The electric push rod 32 can be of the DG series. The input end of the electric push rod 32 is electrically connected to the output end of the controller 101. An adjustment block 35 is provided inside the fixed groove 34. The adjustment block 35 slides and engages with the inner wall of the fixed groove 34. The output end of the electric push rod 32 is fixed to the surface at the bottom of the adjustment block 35. The surface of the adjustment block 35 is fixed to the surface of the support frame 118. The inner wall of the fixed cylinder 31 is provided with a guide groove 33, and the guide groove 33 slides and engages with the surface of the adjustment block 35. By setting up an adjustable height mechanism, the height of the support frame 118 and the spray head 109 can be adjusted according to the needs of cold storage wall spraying, making the spraying device more efficient at spraying polyurethane and shortening the working time.

[0020] Reference Figure 2 and Figure 6 Furthermore, the material hopper 102 is equipped with a preheating and stirring mechanism 4. The preheating and stirring mechanism 4 consists of a stirring rod 41, a heating element 42, a stirrer 43, a fixing plate 44, a scraper 45, and a telescopic column 46. The stirrer 43 is installed inside the material hopper 102 and rotates with the inner wall of the material hopper 102. The top of the stirrer 43 extends into the mounting box 106 and is fixed to the surface at the center of the driven pulley 108. The surface of the stirrer 43 is covered with... The device includes equally spaced stirring rods 41 for mixing polyurethane. Heating elements 42 are installed on the inner wall of the material tank 102, with the input end of each heating element 42 electrically connected to the output end of the controller 101. A fixing plate 44 is installed on the surface of each stirrer 43, and a scraper 45 is positioned below the fixing plate 44. The bottom surface of the scraper 45 contacts the inner wall of the material tank 102. Telescopic columns 46 are installed on the bottom surface of the fixing plate 44, with the bottom end of each telescopic column 46 fixed to the surface of the scraper 45. By setting up a preheating stirring mechanism, the high-viscosity polyurethane can be thoroughly mixed, effectively improving foaming and spraying effects. Simultaneously, it reduces particles in the mixture, preventing the nozzle 109 from becoming clogged.

[0021] Specifically, when using the polyurethane spraying device for cold storage construction: First, push the device frame 1 to the designated position on the cold storage wall. The controller 101 controls the dust extraction fan 21 inside the fixed box 22 to work. When the impeller inside the dust extraction fan 21 rotates at high speed, air is thrown to the edge of the impeller under the action of centrifugal force, forming a vacuum area. External air flows in to replenish it under the action of pressure difference, thereby realizing air intake. During rotation, the kinetic energy of the air is converted into static pressure energy, and the fan outlet presents positive pressure. Dust on the wall enters the dust collection box 24 through the dust collection hood 23 and the dust extraction fan 21 under the action of suction. Large dust particles separate due to their own weight and automatically settle into the inside of the frame 26, where they are filtered by the filter screen 25. The air inside the dust collection box 24 is filtered by the action of the filter screen 25. The filtered air is discharged from the inside of the dust collection box 24 through the holes on the surface of the filter screen 25, and the walls of the cold storage are vacuumed. If the user needs to clean the dust inside the frame 26, the user pulls the door to remove it from the surface of the dust collection box 24, and then pulls the frame 26 to pull it out from the inside of the dust collection box 24. The suction pipe of the vacuum fan 21 adopts a flexible hose structure, which can adjust the suction angle of the vacuum hood 23 to realize the automatic dust collection function of the spraying device, thereby avoiding the phenomenon that dust will affect the waterproof and heat insulation effect of the polyurethane spraying, and making the sprayed polyurethane have a better heat insulation and waterproof effect on the cold storage.

[0022] Subsequently, under the action of temperature sensor 104, the temperature change during the polyurethane heating process inside the material bin 102 can be monitored in a timely manner, ensuring that the temperature fluctuates within a safe range. This not only helps improve product quality but also effectively avoids damage to the material bin 102 or production accidents caused by temperature runaway. Controller 101 controls the operation of pump 111 inside the holding box 112. Under the action of pump 111, the polyurethane inside the material bin 102 is guided to the inside of nozzle 109 through telescopic hose 114. Under the action of nozzle 109, the polyurethane is sprayed onto the wall of the cold storage. Some polyurethane liquid will drip into the inside of collection frame 103 to avoid waste. Controller 101 controls the rotation motor 12 on the surface of support frame 118. 1. Under the action of the rotating motor 121, the spray head 109 is driven to rotate on the surface of the support frame 118, thereby adjusting the spraying angle of the spray head 109. Since the telescopic hose 114 is a hose structure, when the spray head 109 rotates, the telescopic hose 114 will move on the surface of the guide frame 115, so that the movement of the spray head 109 is not restricted. Subsequently, the controller 101 controls the servo motor 113 to work. Under the action of the servo motor 113, the lead screw body 120 is driven to rotate inside the device frame 1. With the cooperation of the lead screw body 120 and the lead screw nut 119, the moving frame 110 is driven to move on the surface of the device frame 1, thereby performing efficient spraying on the wall of the cold storage, while ensuring the uniformity of the coating.

[0023] Subsequently, the polyurethane material enters the interior of the material box 102 through the feed frame 105 and the feed pipe. The controller 101 controls the drive motor 107 on the inner wall of the mounting box 106 to work. Under the action of the drive motor 107, the drive pulley 117 is driven to rotate. When the drive pulley 117 rotates, it drives the belt body 116 to rotate. Under the action of the belt body 116, the driven pulley 108 rotates on the inner wall of the mounting box 106, thereby driving the agitator 43 to rotate inside the material box 102. When the agitator 43 rotates, it drives the agitator rod 41, the fixing plate 44, and the scraper 45 to rotate inside the material box 102. Under the combined action of the agitator 43 and the fixing plate 44, the polyurethane material inside the material box 102 is stirred. Under the elastic force of the telescopic column 46, the polyurethane material inside the material box 102 is stirred. The scraper 45 is driven to move continuously until it contacts the bottom of the material box 102, thereby preventing the polyurethane material from settling inside the material box 102. To ensure the flowability of the polyurethane inside the material box 102, the controller 101 controls the heating element 42 to work. Under the action of the heating element 42, the polyurethane inside the material box 102 is heated. The heating element 42 generates heat through the resistance of the current, which can transfer the heat to the polyurethane material in contact with it. Polyurethane has a certain heat resistance and can withstand the temperature generated by the heating element 42, so as to realize the preheating and stirring function of the spraying device. This allows the spraying device to fully stir and mix the polyurethane with high viscosity during use, which can effectively improve the foaming and spraying effect. At the same time, it can reduce the particles in the mixture and prevent the nozzle 109 from being blocked.

[0024] Subsequently, in order to adjust the spraying height or spray higher wall surfaces, the controller 101 controls the electric push rod 32 inside the fixed cylinder 31 to work. Under the action of the electric push rod 32, the adjusting block 35 slides inside the fixed groove 34. Under the action of the guide groove 33, the adjusting block 35 is guided. When the adjusting block 35 moves, the adjusting block 35 drives the support frame 118 to move up and down on the surface of the moving frame 110, thereby driving the nozzle 109 to move up and down, thus adjusting the spraying height of the nozzle 109. This makes the spraying range of the nozzle 109 larger, the efficiency higher, and better meets the user's needs, thus realizing the height adjustment function of the spraying device. This allows the spraying device to adjust the height of the support frame 118 and the nozzle 109 according to the needs of spraying the cold storage wall, making the spraying device more efficient in spraying polyurethane and shortening the working time. The controller 101 controls the temperature sensor 104, drive motor 107, pump body 111, servo motor 113, rotary motor 121, dust extraction fan 21, and electric push rod 32. The controller 101 has sufficient processing power and interface to simultaneously monitor and control the operating status and actions of multiple electrical components, and perform centralized control to ensure the efficient operation of the entire spraying device. The specific connection and control method is existing technology and will not be described in detail here. Finally, the spraying device is put into use.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A polyurethane spraying device for cold store construction, comprising a device carriage (1), characterised in that: A material box (102) is mounted on the surface of the device frame (1). A movable frame (110) is provided on the surface of the device frame (1). The movable frame (110) slides and engages with the surface of the device frame (1). An installation box (106) is mounted on the surface of the top position of the material box (102) by screws. A support frame (118) is provided on the surface of the movable frame (110). A nozzle (109) is provided on the surface of the support frame (118). A collection frame (103) is mounted on the surface of the movable frame (110) by screws. An automatic dust collection mechanism (2) is provided on the surface of the device frame (1). An adjustment height mechanism (3) is provided on the inner wall of the movable frame (110) and the surface of the support frame (118). A preheating and stirring mechanism (4) is provided inside the material box (102).

2. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: A temperature sensor (104) is installed on the inner wall of the hopper (102). A feed frame (105) is installed on the surface of the top of the hopper (102). A feed pipe is installed on the surface of the feed frame (105), and one end of the feed pipe extends into the interior of the hopper (102) and is connected to the interior of the feed frame (105). A driven pulley (108) is installed inside the mounting box (106), and a driving pulley (117) is installed inside the mounting box (106). The driving pulley (117) and the driven pulley (108) rotate and cooperate with the inner wall of the mounting box (106). A belt body (116) is fitted onto the surfaces of the driving pulley (117) and the driven pulley (108). A drive motor (107) is installed on the inner wall of the mounting box (106). A rotating shaft is installed at the output end of the drive motor (107) via a coupling, and one end of the rotating shaft passes through the surface at the center of the driving pulley (117) and is fixed thereto. The nozzle (109) rotates with the inner wall of the support frame (118). A rotating motor (121) is installed on the surface of the support frame (118). A shaft is installed at the output end of the rotating motor (121) via a coupling, and one end of the shaft passes through the support frame (118). And fixed to the surface of the nozzle (109), a guide frame (115) is installed on the surface of the top position of the moving frame (110), a container (112) is installed on the surface of the top position of the device frame (1), a pump body (111) is installed inside the container (112), the input end of the pump body (111) passes through the material box (102) and extends into the inside of the material box (102), a telescopic hose (114) is installed on the output end of the pump body (111), one end of the telescopic hose (114) passes through the guide frame (115) and is connected to the inside of the nozzle (109), and the inside of the device frame (1) is set There is a lead screw body (120), which rotates with the inner wall of the device frame (1). The surface of the lead screw body (120) is threaded with a lead screw nut (119), which slides with the inner wall of the device frame (1). The surface of the lead screw nut (119) is fixed to the surface at the bottom of the moving frame (110). A servo motor (113) is mounted on the surface of the device frame (1). The output end of the servo motor (113) is mounted with a rotating rod through a coupling, and one end of the rotating rod passes through the device frame (1) and is fixed to the surface of the lead screw body (120).

3. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: The automatic vacuuming mechanism (2) consists of a vacuuming fan (21), a fixed box (22), a vacuuming hood (23), a vacuuming box (24), a filter screen (25), and a frame (26). The vacuuming box (24) is installed on the surface of the top position of the device frame (1). The vacuuming box (24) is provided with a frame (26) for collecting dust inside the vacuuming box (24). The frame (26) and the inner wall of the vacuuming box (24) slide against each other. The filter screen (25) is installed on the inner wall of the vacuuming box (24) by screws. The fixed box (22) is installed on the surface of the top position of the vacuuming box (24).

4. The polyurethane spraying device for cold storage construction according to claim 3, characterized in that: The fixed box (22) is equipped with a vacuum fan (21). The output end of the vacuum fan (21) extends into the vacuum box (24). The input end of the vacuum fan (21) is equipped with a vacuum hood (23). The surface of the vacuum hood (23) is fixed to the surface of the material box (102). The vacuum hood (23) is connected to the inside of the vacuum fan (21). The surface of the vacuum box (24) is provided with a door, and the door is detachably connected to the surface of the vacuum box (24).

5. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: The height adjustment mechanism (3) consists of a fixed cylinder (31), an electric push rod (32), a guide groove (33), a fixed groove (34), and an adjustment block (35). The surface of the movable frame (110) is provided with a fixed groove (34), and a fixed cylinder (31) is installed inside the fixed groove (34). An electric push rod (32) is installed inside the fixed cylinder (31).

6. The polyurethane spraying device for cold storage construction according to claim 5, characterized in that: An adjusting block (35) is provided inside the fixing groove (34). The adjusting block (35) slides and engages with the inner wall of the fixing groove (34). The output end of the electric push rod (32) is fixed to the surface at the bottom of the adjusting block (35). The surface of the adjusting block (35) is fixed to the surface of the support frame (118). The inner wall of the fixing cylinder (31) is provided with guide grooves (33). The guide grooves (33) slide and engage with the surface of the adjusting block (35).

7. The polyurethane spraying device for cold storage construction according to claim 1, characterized in that: The preheating and stirring mechanism (4) consists of a stirring rod (41), a heating plate (42), a stirrer (43), a fixing plate (44), a scraper (45), and a telescopic column (46). The material box (102) is equipped with a stirrer (43). The stirrer (43) and the inner wall of the material box (102) rotate and cooperate with each other. The top of the stirrer (43) extends into the interior of the mounting box (106) and is fixed to the surface at the center of the driven pulley (108). The surface of the stirrer (43) is equipped with stirring rods (41) at equal intervals for stirring polyurethane.

8. The polyurethane spraying device for cold storage construction according to claim 7, characterized in that: Heating elements (42) are installed on the inner wall of the material box (102). Fixing plates (44) are installed on the surface of the agitator (43). A scraper (45) is provided below the fixing plate (44). The surface of the scraper (45) at the bottom position is in contact with the inner wall of the material box (102). Telescopic columns (46) are installed on the surface of the fixing plate (44) at the bottom position. The bottom end of the telescopic column (46) is fixed to the surface of the scraper (45).

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