High-pressure mixing device for high-density polyurethane flexible foam
By introducing heating and stirring functions into a high-pressure mixing device with high-density polyurethane soft bubbles, and cleaning the mixing shell with water pump and piston assembly, combining the stop-reverse component to prevent material reflux, the problems of mixing head blockage and material reflux are solved, and the problems of mixing head are improved. The efficiency of the device and the convenience of maintenance are achieved.
Patent Information
- Application Number
- CN202411449653.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-01-03
AI Technical Summary
After the use of the existing high-pressure mixing device with high-density polyurethane soft bubbles, the mixing head is prone to clogging, and the residual material may flow back into the raw material tank, affecting the use of the device.
A high-pressure mixing device with high-density polyurethane soft bubbles is designed, using components such as trolleys, heating furnaces, raw material tanks, storage racks, feeding pipes, rotating motors, stirring paddles, intake pipes and intake pumps to prevent materials by heating and stirring. Cool, and after the device is used, the mixing housing is cleaned with a water pump and piston assembly to prevent clogging; at the same time, the stop-reverse assembly prevents material from flowing back.
Effectively prevent mixing head blockage and material reflux, ensure the normal operation of the device and the quality of the materials in the raw material tank, and simplify the cleaning and maintenance process.
Smart Images
Figure CN119236737A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of polyurethane foaming, in particular to a high-pressure mixing device for high-density polyurethane soft foam. Background Art
[0002] The high-pressure mixing device for high-density polyurethane soft foam is an advanced production equipment, mainly used for the production and manufacturing of polyurethane soft foam. The device adopts high-pressure mixing technology, which can effectively improve the density and uniformity of polyurethane soft foam, thereby improving the quality and performance of the product. The core part of the device is a high-pressure mixing head, which can quickly and evenly mix two or more raw materials under high pressure. In order to ensure the mixing effect, the nozzle and piston of the mixing head are made of high-strength and wear-resistant materials, which can withstand high pressure and high-frequency operations. The working principle of polyurethane foaming is: the two raw materials commonly known as "white material" and "black material" are injected into the mixing cavity of the mixing head. After the white material and the black material are mixed and sprayed to the outside world, they begin to foam rapidly, thereby spraying and filling the gaps in objects or walls.
[0003] The existing high-density polyurethane soft foam high-pressure mixing device is widely used, but a part of the material will remain in the mixing head after use. Excessive accumulation of this part of the material will cause the mixing head to be blocked, and the staff needs to disassemble the mixing head for cleaning, which is more troublesome. In addition, the material remaining inside the mixing head may return to the raw material tank, causing partial foaming of the raw material inside the raw material tank, affecting the use of the device. Therefore, a high-density polyurethane soft foam high-pressure mixing device is proposed to address the above problems. Summary of the invention
[0004] The object of the present invention is to provide a high-density polyurethane soft foam high-pressure mixing device to solve the problems mentioned in the background art that residual materials may block the mixing head and the materials in the mixing head may flow back.
[0005] To achieve the above object, the present invention provides the following technical solutions: A high-pressure mixing device for high-density polyurethane soft foam, comprising a cart, a heating furnace is fixedly connected to the top of the cart, a raw material tank is symmetrically arranged inside the heating furnace, a shelf fixedly connected to the top of the heating furnace is arranged between two raw material tanks, a mixing assembly is arranged inside the shelf, a positioning assembly is installed below the mixing assembly, a feeding hose is installed on the left and right sides of the mixing assembly, one end of the feeding hose away from the mixing assembly is spirally connected to a three-way valve connected to the feeding hose, the bottom end of the three-way valve is spirally connected to a tank cover, the bottom end of the tank cover is fixedly connected to a bottom-probing pipe vertically arranged and connected to the three-way valve, the top of the tank cover is fixedly connected to a feeding pipe passing through the tank cover, the outside of the feeding pipe is spirally connected to a feeding cover, one side of the feeding cover is provided with a rotating motor fixedly connected to the middle of the top of the tank cover, the bottom end of the output shaft of the rotating motor is fixedly connected to a vertically arranged stirring paddle, one side of the rotating motor is provided with an air intake pipe spirally connected to the top of the tank cover and passing through the tank cover, and the end of the air intake pipe away from the tank cover is fixedly connected to an air intake pump connected to the tank cover.
[0006] Preferably, the mixing assembly includes a mixing shell that is snap-connected to the inner side of the storage rack, a spray cover is fixedly connected to the top of the mixing shell, a discharge hole is opened on the top of the spray cover and penetrates the spray cover from top to bottom, a threaded barrel is fixedly connected to the top of the spray cover on the outside of the discharge hole, a threaded cap is spirally connected to the outside of the threaded barrel, a spray head is fixedly connected to the top of the threaded cap, a rubber plug is provided on the inside of the spray head, a piston assembly is provided on the inside of the mixing shell, and a non-return assembly is symmetrically provided on the outside of the mixing shell.
[0007] Preferably, the tank cover is installed on the top of the raw material tank, the output shaft of the rotating motor passes through the tank cover and is rotatably connected to the tank cover, the air intake pump is fixedly connected to the top of the heating furnace, the number of the discharge holes is multiple, and the discharge holes are polar-axis distributed at the top of the spray cover, and the outer side of the rubber plug fits tightly with the inner side of the nozzle.
[0008] Preferably, the piston assembly includes a cleaning piston located on the inner side of the mixing shell and tightly fitted with the inner side of the mixing shell, the bottom end of the cleaning piston is fixedly connected to a piston rod, the outer side of the piston rod is symmetrically provided with limit strips fixedly connected to the outer side of the piston rod, the top of the cleaning piston is fixedly connected to a fixing column, and the outer side of the piston rod is symmetrically provided with insertion holes that pass through the piston rod.
[0009] Preferably, the anti-return assembly includes a fixed cylinder fixedly connected to the outside of the mixing shell and communicating with the mixing shell, a block is fixedly connected to the inside of the fixed cylinder, a feed groove is provided on one side of the block, a ball groove communicating with the feed groove is provided on the side of the block away from the feed groove, a sealing ball is provided on the inside of the ball groove, a horizontally arranged connecting rod is fixedly connected to the side of the sealing ball away from the block, a return spring is provided on the outside of the connecting rod, a baffle is fixedly connected to the end of the connecting rod away from the sealing ball, and a connecting frame slidably connected to the outside of the connecting rod is provided on one side of the baffle.
[0010] Preferably, the positioning assembly includes a fixing plate fixedly connected to the bottom end of the mixing shell and fixedly connected to the bottom end of the mixing shell, a fixing pin slidingly connected inside the fixing plate and passing through the fixing plate, two circular plates fixedly connected to the outside of the fixing pin, and a positioning spring located on the outside of the fixing pin fixedly connected to one side of one of the circular plates.
[0011] Preferably, the piston rod and the limit strip pass through the mixing shell and are slidably connected to the mixing shell, the number of the fixing columns is multiple, and the fixing columns are distributed in a polar axis at the top of the cleaning piston, the end of the fixing cylinder away from the mixing shell is fixedly connected to the feed hose and passes through the feed hose, the inner side of the ball groove is tightly fitted with the outer side of the sealing ball, one end of the return spring is fixedly connected to the sealing ball, the end of the return spring away from the sealing ball is fixedly connected to the connecting frame, the outer side of the connecting frame is fixedly connected to the inner side of the fixing cylinder, the outer diameter of the positioning pin is smaller than the inner diameter of the socket, the positioning pin is inserted into the inner side of the socket located above, and the end of the positioning spring away from the circular plate is fixedly connected to the fixing plate.
[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting up a cart, a heating furnace, a raw material tank, a storage rack, a feeding pipe, a feeding cover, a rotating motor, a stirring paddle, an air intake pipe and an air intake pump, when the device is used, the rotating motor and the heating furnace at the top of the tank cover are started, the heating furnace heats the raw material tank and the material, and the output shaft of the rotating motor drives the stirring paddle to rotate to stir the material, which can prevent the material from solidifying and settling, and ensure the fluidity of the material; 2. In the present invention, by setting a mixing component, a mixing shell, a spray cover, a discharge hole, a threaded barrel, a threaded cover, a nozzle, a rubber plug, a piston component, a cleaning piston, a piston rod, a limit strip, a fixed column, a jack, a positioning component, a fixed plate, a positioning pin, a circular plate, a positioning spring, a feed hose, a three-way valve, a tank cover and a bottom probe, after the use of the device is finished, the three-way valve is connected to an external water pump to flush away the residual material inside the check component and the mixing shell, and the piston rod and the limit strip are pushed. At this time, the cleaning piston squeezes out the material inside the mixing shell and the discharge hole. The setting of the piston component can clean the mixing shell to prevent the residual material from solidifying inside the mixing shell and causing the mixing shell to be blocked. The limit strip can limit the cleaning piston to ensure that the fixed column is always vertically aligned with the discharge hole. The positioning component can position the piston component to prevent the piston component from moving during the use of the device. 3. In the present invention, by providing a non-return assembly, a fixed cylinder, a block, a feed groove, a ball groove, a sealing ball, a connecting rod, a reset spring, a baffle and a connecting frame, when the device is in use, the material inside the raw material tank enters the non-return assembly through the bottom probe, the three-way valve and the feed hose, at this time, the high-pressure material enters the inside of the fixed cylinder through the feed groove on the block, the sealing ball is pushed out of the ball groove, the connecting rod on one side of the baffle slides on the inside of the connecting frame, the reset spring is compressed by force, and when the device is stopped, the reset spring resets and drives the connecting rod on one side of the baffle to slide on the inside of the connecting frame until the outside of the sealing ball is tightly fitted with the inside of the ball groove. The setting of the non-return assembly can prevent the material inside the mixing shell from returning to the inside of the raw material tank, thereby ensuring that the material inside the raw material tank is not affected. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the heating furnace connection assembly of the present invention; Figure 3 It is a schematic diagram of the installation structure of the tank cover of the present invention; Figure 4 It is a schematic diagram of the structure of the mixing assembly of the present invention; Figure 5 It is a schematic diagram of the installation structure of the nozzle of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the fixing cylinder of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the stopper of the present invention; Figure 8 It is a schematic diagram of the connection structure of the piston assembly of the present invention; Fig. 9 It is a schematic diagram of the bottom structure of the mixing shell of the present invention.
[0014] In the figure: 1, cart; 2, heating furnace; 3, raw material tank; 4, shelf; 5, mixing assembly; 51, mixing shell; 52, spray cover; 53, discharge hole; 54, threaded barrel; 55, threaded cover; 56, spray head; 57, rubber plug; 58, piston assembly; 581, cleaning piston; 582, piston rod; 583, limit strip; 584, fixed column; 585, socket; 59, check assembly; 591, fixed barrel; 592, stopper; 59 3. Feed trough; 594. Ball trough; 595. Sealing ball; 596. Connecting rod; 597. Return spring; 598. Baffle; 599. Connecting frame; 6. Positioning assembly; 61. Fixing plate; 62. Positioning pin; 63. Round plate; 64. Positioning spring; 7. Feed hose; 8. Three-way valve; 9. Tank cover; 10. Bottom probe; 11. Feeding pipe; 12. Feeding cover; 13. Rotating motor; 14. Agitator; 15. Intake pipe; 16. Intake pump. DETAILED DESCRIPTION
[0015] Embodiment 1: See also Figure 1-9 , the present invention provides a technical solution: A high-pressure mixing device for high-density polyurethane soft foam, comprising a cart 1, a heating furnace 2 is fixedly connected to the top of the cart 1, a raw material tank 3 is symmetrically arranged inside the heating furnace 2, a shelf 4 fixedly connected to the top of the heating furnace 2 is arranged between the two raw material tanks 3, a mixing component 5 is arranged inside the shelf 4, a positioning component 6 is installed below the mixing component 5, a feeding hose 7 is installed on the left and right sides of the mixing component 5, a three-way valve 8 connected to the feeding hose 7 is spirally connected to one end of the feeding hose 7 away from the mixing component 5, a tank cover 9 is spirally connected to the bottom end of the tank cover 9, a bottom probe 10 vertically arranged and connected to the three-way valve 8 is fixedly connected to the bottom end of the tank cover 9, and a feeding pipe 11 penetrating the tank cover 9 is fixedly connected to the top of the tank cover 9 A feeding cover 12 is spirally connected to the outside of the feeding pipe 11, and a rotating motor 13 fixedly connected to the middle of the top of the tank cover 9 is provided on one side of the feeding cover 12. A vertically arranged stirring paddle 14 is fixedly connected to the bottom end of the output shaft of the rotating motor 13, and an air intake pipe 15 spirally connected to the top of the tank cover 9 and penetrating the tank cover 9 is provided on one side of the rotating motor 13. An air intake pump 16 that penetrates the tank cover 9 is fixedly connected to the end of the air intake pipe 15 away from the tank cover 9. When the device is used, the rotating motor 13 and the heating furnace 2 at the top of the tank cover 9 are started, and the heating furnace 2 heats the raw material tank 3 and the material. The output shaft of the rotating motor 13 drives the stirring paddle 14 to rotate to stir the material, which can prevent the material from coagulating and precipitating and ensure the fluidity of the material.
[0016] The mixing assembly 5 includes a mixing shell 51 which is snap-fitted to the inner side of the storage rack 4, a spray cover 52 is fixedly connected to the top of the mixing shell 51, a discharge hole 53 which penetrates the spray cover 52 from top to bottom is provided at the top of the spray cover 52, a threaded barrel 54 which is fixedly connected to the top of the spray cover 52 is provided on the outside of the discharge hole 53, a threaded cover 55 is spirally connected to the outside of the threaded barrel 54, a nozzle 56 is fixedly connected to the top of the threaded cover 55, a rubber plug 57 is provided on the inside of the nozzle 56, a piston assembly 58 is provided on the inside of the mixing shell 51, and a check assembly 59 is symmetrically provided on the outside of the mixing shell 51, a tank cover 9 is installed on the top of the raw material tank 3, an output shaft of the rotating motor 13 penetrates the tank cover 9 and is rotatably connected to the tank cover 9, an air intake pump 16 is fixedly connected to the top of the heating furnace 2, and the discharge hole 53 is fixedly connected to the top of the spray cover 52. The number of the spraying holes 53 is multiple, the discharge holes 53 are polarly distributed at the top of the spraying cover 52, the outer side of the rubber plug 57 is tightly fitted with the inner side of the spray head 56, the piston assembly 58 includes a cleaning piston 581 located on the inner side of the mixing shell 51 and tightly fitted with the inner side of the mixing shell 51, the bottom end of the cleaning piston 581 is fixedly connected with a piston rod 582, the outer side of the piston rod 582 is symmetrically provided with a limit strip 583 fixedly connected to the outer side of the piston rod 582, the top of the cleaning piston 581 is fixedly connected with a fixing column 584, the outer side of the piston rod 582 is symmetrically provided with a socket 585 that penetrates the piston rod 582, the positioning assembly 6 includes a fixing plate 61 fixedly connected to the bottom end of the mixing shell 51 and fixedly connected to the bottom end of the mixing shell 51, and the fixing plate 61 is slidably connected with a through The positioning pin 62 of the fixed plate 61, the outer side of the positioning pin 62 is fixedly connected to two circular plates 63, one side of one of the circular plates 63 is fixedly connected to a positioning spring 64 located on the outer side of the positioning pin 62, the piston rod 582 and the limit bar 583 penetrate the mixing shell 51 and are slidably connected to the mixing shell 51, the number of the fixing columns 584 is multiple, and the fixing columns 584 are distributed in a polar axis at the top of the cleaning piston 581, the end of the fixing cylinder 591 away from the mixing shell 51 is fixedly connected to the feed hose 7 and passes through the feed hose 7, the inner side of the ball groove 594 is tightly fitted with the outer side of the sealing ball 595, one end of the reset spring 597 is fixedly connected to the sealing ball 595, and the end of the reset spring 597 away from the sealing ball 595 is fixedly connected to the connecting frame 599, and the connecting frame 59 9 is fixedly connected to the inner side of the fixed cylinder 591, the outer diameter of the positioning pin 62 is smaller than the inner diameter of the insertion hole 585, the positioning pin 62 is inserted into the inner side of the insertion hole 585 located at the top, and the end of the positioning spring 64 away from the circular plate 63 is fixedly connected to the fixed plate 61. After the use of the device is over, the three-way valve 8 is connected to an external water pump to flush away the residual materials inside the check assembly 59 and the mixing shell 51, and the piston rod 582 and the limit bar 583 are pushed. At this time, the cleaning piston 581 squeezes out the materials inside the mixing shell 51 and the discharge hole 53. The setting of the piston assembly 58 can clean the mixing shell 51 to prevent the residual materials from solidifying inside the mixing shell 51 and causing the mixing shell 51 to be blocked. The limit bar 583 can limit the cleaning piston 581.To ensure that the fixed column 584 is always vertically aligned with the discharge hole 53, the positioning assembly 6 can position the piston assembly 58 to prevent the piston assembly 58 from moving during the use of the device.
[0017] The anti-return assembly 59 includes a fixed cylinder 591 fixedly connected to the outside of the mixing shell 51 and connected to the mixing shell 51, a stopper 592 is fixedly connected to the inside of the fixed cylinder 591, a feed groove 593 is provided on one side of the stopper 592, a ball groove 594 connected to the feed groove 593 is provided on the side of the stopper 592 away from the feed groove 593, a sealing ball 595 is provided on the inside of the ball groove 594, a horizontally arranged connecting rod 596 is fixedly connected to the side of the sealing ball 595 away from the stopper 592, a return spring 597 is provided on the outside of the connecting rod 596, a baffle 598 is fixedly connected to the end of the connecting rod 596 away from the sealing ball 595, and a connecting frame 599 slidably connected to the outside of the connecting rod 596 is provided on one side of the baffle 598. When the device is in use , the material inside the raw material tank 3 enters the non-return assembly 59 through the bottom probe 10, the three-way valve 8 and the feed hose 7. At this time, the high-pressure material enters the inside of the fixed cylinder 591 through the feed groove 593 on the block 592, and the sealing ball 595 is pushed out of the ball groove 594. The connecting rod 596 on one side of the baffle 598 slides on the inside of the connecting frame 599, and the return spring 597 is compressed. When the device is stopped, the return spring 597 is reset to drive the connecting rod 596 on one side of the baffle 598 to slide on the inside of the connecting frame 599 until the outside of the sealing ball 595 is tightly fitted with the inside of the ball groove 594. The setting of the non-return assembly 59 can prevent the material inside the mixing shell 51 from returning to the inside of the raw material tank 3, thereby ensuring that the material inside the raw material tank 3 is not affected.
[0018] Working process: Power on the equipment before use, first unscrew the feeding cap 12 from the outside of the feeding tube 11, add different materials into the inside of the two raw material tanks 3 through the two feeding tubes 11, screw the feeding cap 12 onto the outside of the feeding tube 11 after the feeding is completed to ensure the sealing of the raw material tank 3, start the rotating motor 13 and the heating furnace 2 on the top of the tank cover 9, the heating furnace 2 heats the raw material tank 3 and the material, and the output shaft of the rotating motor 13 drives the stirring paddle 14 to rotate to stir the material, which can prevent the material from solidifying and precipitating and ensure the fluidity of the material. When the equipment needs to be used, push the cart 1 to move the equipment to the desired position, unscrew the threaded cap 55 from the outside of the threaded barrel 54, take out the mixing assembly 5 from the inside of the rack 4, and align the spray cap 52 with the material to be sprayed. The position of the bubble, start the air intake pump 16, the air intake pump 16 pressurizes the external air and introduces it into the inner side of the raw material tank 3 through the air intake pipe 15. At this time, the pressure inside the raw material tank 3 increases, and the material inside the raw material tank 3 enters the check assembly 59 through the bottom probe tube 10, the three-way valve 8 and the feed hose 7. At this time, the high-pressure material enters the inner side of the fixed cylinder 591 through the feed groove 593 on the stop block 592, and the sealing ball 595 is pushed out of the ball groove 594. The connecting rod 596 on one side of the baffle 598 slides on the inner side of the connecting frame 599, and the return spring 597 is compressed by force. The two materials entering the inner side of the mixing shell 51 are mixed and then ejected through the spray hole on the spray cover 52, so as to spray and foam the required place. When the gap needs to be sprayed, the device is closed. The threaded cover 55 is screwed onto the outside of the threaded barrel 54, the rubber plug 57 on the inside of the nozzle 56 is taken out and the device is started, the mixed material can be sprayed out through the nozzle 56, so that the nozzle 56 is convenient for filling the gap. When the equipment is used up, the device is closed, and the reset spring 597 is reset to drive the connecting rod 596 on one side of the baffle 598 to slide on the inside of the connecting frame 599 until the outside of the sealing ball 595 is tightly fitted with the inside of the ball groove 594. The setting of the non-return assembly 59 can prevent the material inside the mixing shell 51 from flowing back to the inside of the raw material tank 3, ensuring that the material inside the raw material tank 3 is not affected. In the next step, the threaded cover 55 is unscrewed from the outside of the threaded barrel 54 and the nozzle 56 is cleaned, the three-way valve 8 is connected to a water pump, and the three-way valve 8 is adjusted to make the feed soft. The pipe 7 is connected with the water pump, and the water pump is started. At this time, water enters the inner side of the mixing housing 51 through the feed hose 7 and the non-return assembly 59 and is discharged through the discharge hole 53 on the spray cover 52. The materials in the non-return assembly 59 and the mixing housing 51 are washed away by the water. Next, the water pump is turned off, and the circular plate 63 is pulled to make the positioning pin 62 on the inner side of the fixed plate 61 disengage from the socket 585 located above. At this time, the positioning spring 64 is compressed and pushes the piston rod 582 and the limit bar 583. At this time, the cleaning piston 581 pushes out the residual material inside the mixing housing 51 until the fixed column 584 is inserted into the inner side of the discharge hole 53. At this time, the material inside the discharge hole 53 is squeezed out, and the circular plate 63 is released. The positioning spring 64 is reset to drive the positioning pin 62 to insert into the inner side of the socket 585 located below.Finally, close the three-way valve 8 and unscrew the feed hose 7 from the top of the three-way valve 8, drain the water inside the feed hose 7 and its connecting components, and the mixing component 5 can be cleaned. The setting of the piston component 58 can clean the mixing shell 51 to prevent the residual material from solidifying inside the mixing shell 51 and causing the mixing shell 51 to be blocked. The limit bar 583 can limit the cleaning piston 581 to ensure that the fixed column 584 is always vertically aligned with the discharge hole 53. The positioning component 6 can position the piston component 58 to prevent the piston component 58 from moving during the use of the device.
[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.
Claims
1. A high-pressure mixing device for high-density polyurethane soft foam, comprising a trolley (1), characterized in that: The top of the cart (1) is fixedly connected to a heating furnace (2), and raw material tanks (3) are symmetrically arranged inside the heating furnace (2). A storage rack (4) fixedly connected to the top of the heating furnace (2) is arranged between the two raw material tanks (3), and a mixing assembly (5) is arranged inside the storage rack (4). A positioning assembly (6) is installed below the mixing assembly (5), and feeding hoses (7) are installed on the left and right sides of the mixing assembly (5). One end of the feeding hose (7) away from the mixing assembly (5) is spirally connected to a three-way valve (8) that penetrates the feeding hose (7), and the bottom end of the three-way valve (8) is spirally connected to a tank cover (9), and the bottom end of the tank cover (9) is fixedly connected to a vertically arranged and A bottom-probing tube (10) is connected to the three-way valve (8); a feeding tube (11) is fixedly connected to the top of the tank cover (9) and passes through the tank cover (9); a feeding cover (12) is spirally connected to the outside of the feeding tube (11); a rotating motor (13) is fixedly connected to the middle of the top of the tank cover (9) on one side of the feeding cover (12); a vertically arranged stirring paddle (14) is fixedly connected to the bottom end of the output shaft of the rotating motor (13); an air intake pipe (15) is spirally connected to the top of the tank cover (9) and passes through the tank cover (9) on one side of the rotating motor (13); an air intake pump (16) is fixedly connected to the end of the air intake pipe (15) away from the tank cover (9) and passes through the tank cover (9).
2. A high-density polyurethane soft foam high-pressure mixing device according to claim 1, characterized in that: The mixing assembly (5) comprises a mixing housing (51) snap-fitted to the inner side of the storage rack (4); a spray cover (52) is fixedly connected to the top of the mixing housing (51); a discharge hole (53) is provided at the top of the spray cover (52) and passes through the spray cover (52) from top to bottom; a threaded barrel (54) is fixedly connected to the top of the spray cover (52) on the outside of the discharge hole (53); a threaded cover (55) is spirally connected to the outside of the threaded barrel (54); a spray head (56) is fixedly connected to the top of the threaded cover (55); a rubber plug (57) is provided on the inside of the spray head (56); a piston assembly (58) is provided on the inside of the mixing housing (51); and a check assembly (59) is symmetrically provided on the outside of the mixing housing (51).
3. A high-density polyurethane soft foam high-pressure mixing device according to claims 1 and 2, characterized in that: The tank cover (9) is mounted on the top of the raw material tank (3); the output shaft of the rotating motor (13) passes through the tank cover (9) and is rotatably connected to the tank cover (9); the air intake pump (16) is fixedly connected to the top of the heating furnace (2); there are a plurality of discharge holes (53); the discharge holes (53) are distributed in a polar axis at the top of the spray cover (52); and the outer side of the rubber plug (57) is tightly fitted with the inner side of the spray head (56).
4. A high-density polyurethane soft foam high-pressure mixing device according to claim 2, characterized in that: The piston assembly (58) comprises a cleaning piston (581) located on the inner side of the mixing housing (51) and tightly fitted with the inner side of the mixing housing (51); the bottom end of the cleaning piston (581) is fixedly connected to a piston rod (582); the outer side of the piston rod (582) is symmetrically provided with a limit strip (583) fixedly connected to the outer side of the piston rod (582); the top end of the cleaning piston (581) is fixedly connected to a fixing column (584); and the outer side of the piston rod (582) is symmetrically provided with a socket (585) penetrating the piston rod (582) at the top and bottom.
5. The high-density polyurethane soft foam high-pressure mixing device according to claim 2, characterized in that: The anti-return assembly (59) comprises a fixed cylinder (591) fixedly connected to the outside of the mixing housing (51) and communicating with the mixing housing (51); a stopper (592) is fixedly connected to the inside of the fixed cylinder (591); a feed groove (593) is provided on one side of the stopper (592); a ball groove (594) communicating with the feed groove (593) is provided on the side of the stopper (592) away from the feed groove (593); a sealing ball (595) is provided on the inside of the ball groove (594); a horizontally arranged connecting rod (596) is fixedly connected to the side of the sealing ball (595) away from the stopper (592); a return spring (597) is provided on the outside of the connecting rod (596); a baffle (598) is fixedly connected to the end of the connecting rod (596) away from the sealing ball (595); and a connecting frame (599) slidably connected to the outside of the connecting rod (596) is provided on one side of the baffle (598).
6. The high-density polyurethane soft foam high-pressure mixing device according to claim 1, characterized in that: The positioning assembly (6) comprises a fixing plate (61) fixedly connected to the bottom end of the mixing housing (51), a positioning pin (62) penetrating the fixing plate (61) being slidably connected inside the fixing plate (61), two circular plates (63) being fixedly connected to the outside of the positioning pin (62), one side of one of the circular plates (63) being fixedly connected to a positioning spring (64) located outside the positioning pin (62).
7. A high-density polyurethane soft foam high-pressure mixing device according to claims 4, 5 and 6, characterized in that: The piston rod (582) and the limit bar (583) penetrate the mixing housing (51) and are slidably connected to the mixing housing (51). The number of the fixing columns (584) is plural, and the fixing columns (584) are distributed in a polar axis at the top of the cleaning piston (581). The end of the fixing cylinder (591) away from the mixing housing (51) is fixedly connected to the feed hose (7) and penetrates the feed hose (7). The inner side of the ball groove (594) is tightly fitted with the outer side of the sealing ball (595). The return spring (594) is 97) is fixedly connected to the sealing ball (595), one end of the return spring (597) away from the sealing ball (595) is fixedly connected to the connecting frame (599), the outer side of the connecting frame (599) is fixedly connected to the inner side of the fixed cylinder (591), the outer diameter of the positioning pin (62) is smaller than the inner diameter of the insertion hole (585), the positioning pin (62) is inserted into the inner side of the insertion hole (585) located above, and the end of the positioning spring (64) away from the circular plate (63) is fixedly connected to the fixed plate (61).