Polyurethane valve foaming machine of polyurethane thermal insulation pipe

Abstract

The invention discloses a polyurethane valve foaming machine for a polyurethane thermal insulation pipe, and relates to the technical field of foaming machines, the polyurethane valve foaming machine comprises a rack, a supporting seat is fixedly mounted on one side of the top of the rack, a positioning frame is fixedly mounted above the supporting seat, and hot air blowers are fixedly mounted on the two sides of the outer surface of the positioning frame; a ventilation cavity is formed between the supporting seat and the positioning frame, and the air heater is communicated with the ventilation cavity; a motor is fixedly mounted on the outer surface of the stirring tank. According to the polyurethane valve foaming machine of the polyurethane thermal insulation pipe, when polyurethane is foamed, a worker opens a stirring tank, puts a foaming material into the stirring tank and drives a valve of a guiding and conveying assembly to convey a stock solution and nitrogen into the stirring tank, then the worker starts a motor, and the stirring tank is started; the output end of the motor drives the foaming assembly to rotate in the stirring tank, so that sufficient gas is provided for the stirring tank while the stock solution is stirred to generate foam, and the foam is more dense.

Description

Technical Field

[0001] The invention relates to the technical field of foaming machines, in particular to a polyurethane valve foaming machine for a polyurethane thermal insulation pipe. Background Art

[0002] With the continuous improvement of people's living standards, polyurethane foam materials are widely used in many fields such as production and life, such as polyurethane insulation materials, polyurethane rolling shutter doors and windows, polyurethane tiles, polyurethane composite glass, polyurethane furniture, polyurethane flower pots and polyurethane guardrails. In these industries, the production equipment of polyurethane foam materials used mostly adopts air-blown mixed polyurethane foam equipment.

[0003] When producing polyurethane insulation pipes, it is necessary to manufacture polyurethane foam. The existing polyurethane filling foaming machine uses polyether polyols and polyisocyanates as raw materials. Under the action of various chemical additives such as foaming agents, catalysts, and emulsifiers, foam plastics are obtained through chemical reaction foaming. During the foaming process, the tank body needs to be heated. At the same time, the polyurethane needs to be stirred inside the tank body to achieve sufficient mixing with various chemical agents. The foaming process of traditional polyurethane foaming machines is extremely unstable, resulting in poor molding accuracy of the produced polyurethane foam materials, making it difficult to produce high-quality finished products. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A polyurethane valve foaming machine for a polyurethane insulation pipe, comprising: a frame, a support seat is fixedly installed on one side of the top of the frame, a positioning frame is fixedly installed above the support seat, hot air blowers are fixedly installed on both sides of the outer surface of the positioning frame, a ventilation cavity is provided between the support seat and the positioning frame, and the hot air blower is connected to the ventilation cavity; A stirring tank, wherein a motor is fixedly mounted on the outer surface of the stirring tank, the stirring tank is fixedly mounted on the top of the support seat, the stirring tank is fixedly mounted inside the ventilation cavity, the positioning frame is arranged above the stirring tank, and a gap is arranged between the positioning frame and the stirring tank through the ventilation cavity; A guide assembly, which is used for conveying air, nitrogen and raw liquid. Two groups of guide assemblies are provided. Both groups of guide assemblies are fixedly mounted on both sides of the top of the frame. The guide assemblies are symmetrically arranged with the support seat as the center. The guide assemblies penetrate the positioning frame and the stirring tank and extend to the interior of the cavity thereof. The foaming component is used to evenly mix the foaming material in the stirring tank. The foaming component is rotatably installed inside the cavity of the stirring tank, and the foaming component is frictionally adapted to the inner wall of the cavity of the stirring tank. When the polyurethane is foaming, the staff opens the stirring tank and puts the foaming material into the stirring tank, and drives the valve of the guide component to transport the stock liquid and nitrogen into the stirring tank. Then the staff starts the motor so that the output end of the motor drives the foaming component to rotate in the stirring tank, so that the stock liquid is stirred to produce foam and sufficient gas is provided in the stirring tank, making the foam denser; in the process of stirring the stock liquid, the staff starts the hot air blower installed on both sides of the positioning frame, so that the airflow generated by the hot air blower flows along the ventilation cavity to the periphery of the stirring tank to heat the stirring tank, so that the stock liquid in the stirring tank is mixed and reacted at a suitable temperature, which helps to improve the foaming quality and efficiency.

[0005] Preferably, the stirring tank comprises a tank body, a sealing cover is threadedly mounted on the outer surface of the tank body, a conduit is fixedly mounted on the surface of the tank body away from the sealing cover, a connecting shaft is rotatably mounted at the axis of the sealing cover, a sleeve is fixedly mounted on the outer surface of the connecting shaft, a stirring rod is fixedly mounted on the surface of the connecting shaft away from the sleeve, an extension rod is fixedly mounted on the end of the stirring rod, and an external ring is sleeved on the outer surface of the extension rod. The sleeve is sleeved on the output end of the motor, and the staff starts the motor so that the output end of the motor drives the stirring rod to rotate. At this time, the extension rod and the external ring installed on the end of the stirring rod rotate at a position close to the injection pipe. At this time, the original liquid and gas injected into the tank body along the injection pipe are stirred by the rotating extension rod and the external ring to diffuse outward and contact with the foaming material, thereby improving the foaming efficiency.

[0006] Preferably, the sleeve shaft is sleeved on the output end of the motor, the connecting shaft is fixedly connected to the output end of the motor via the sleeve shaft, and the connecting shaft is rotatably installed in the tank body.

[0007] Preferably, the guiding assembly includes an outer cover, connecting cavities are fixedly installed on both sides of the outer surface of the outer cover, an injection pipe is fixedly installed on the surface of the connecting cavity close to the positioning frame, a guiding cavity is fixedly installed on the outer surface of the connecting cavity, a delivery pipe is fixedly installed on the bottom of the guiding cavity, a control valve is movably installed on the surface of the delivery pipe, an extraction pipe is fixedly installed on the top of the connecting cavity, and a storage cavity is fixedly installed on the bottom of the extraction pipe.

[0008] Preferably, the storage cavity is fixedly mounted on both sides of the top of the frame, and the injection pipe passes through the positioning frame and the conduit and extends to the interior of the cavity of the tank body.

[0009] Preferably, the foaming component includes a positioning ring, a connecting plate is fixedly mounted on the outer surface of the positioning ring, a circular shaft is fixedly mounted on the outer surface of the connecting plate, a rotating blade is rotatably mounted on the surface of the circular shaft, and a leaking plate is fixedly mounted on the surface of the circular shaft away from the connecting plate. The staff opens the control valve installed on the delivery pipe to deliver nitrogen and raw liquid to the storage cavity along the delivery pipe and the extraction pipe respectively. When the polyurethane is foamed, the staff closes the control valve and starts the extraction pump connected to the injection pipe to extract the nitrogen and raw liquid in the storage cavities on both sides upward along the extraction pipe and deliver them to the tank body along the injection pipe, so as to facilitate the addition of raw liquid during foaming and provide sufficient gas in the tank body to improve the stability of the foaming process in the tank body.

[0010] Preferably, the positioning ring is sleeved on the surface of the stirring rod, and three connecting plates are provided, and the three connecting plates are distributed in a circle on the surface of the positioning ring.

[0011] Preferably, the surface of the leaking plate is provided with a circular hole, and both sides of the outer surface of the leaking plate are provided with a slide groove, and a stirring piece is slidably installed inside the slide groove, and the stirring piece is frictionally adapted to the inner wall of the tank. The staff starts the motor, so that the output end of the motor drives the stirring rod to rotate, and the positioning ring sleeved on the outer side of the stirring rod drives the connecting plate to rotate. At this time, the rotating blades installed on the outer side of the connecting plate rotate in the tank, and multiple groups of rotating blades stir the foaming material and the original liquid. When the leaking plate installed on the outer side of the rotating blade rotates in the tank, the foam passes through the circular hole, making the foam denser.

[0012] Preferably, the stirring element includes an arc-bent clamping plate, a clamping block is fixedly installed on the outer surface of the arc-bent clamping plate, three groups of the clamping blocks are provided, the three groups of the clamping blocks are adapted to the arc-bent clamping plate, a rotating ball is provided inside the clamping block, the rotating ball is rotatably installed inside the clamping block and the arc-bent clamping plate, and the rotating ball is frictionally adapted to the inner wall of the tank body.

[0013] Preferably, the two sides of the outer surface of the curved clamp are fixedly installed with limit slot blocks, the interior of the limit slot block is fixedly installed with a curved sheet, the surface of the curved sheet is fixedly installed with a clamping block, the clamping block is clamped inside the slide slot, and the clamping block is slidably adapted to the slide slot. When the drain plate rotates with the connecting plate, the clamping block installed in the slide slot is thrown outward by the centrifugal force generated by the rotation and slides to the top of the slide slot. The curved sheet is set to a flexible material. When the drain plate rotates, the rotating ball installed in the clamping block rubs and collides with the inner wall of the tank body. At this time, the curved sheet is deformed by the collision, and the rotating ball rotates on the surface of the tank body to knock the foam attached to the inner wall of the tank body when stirring and foaming, so as to avoid uneven foam adhesion and stirring.

[0014] The present invention provides a polyurethane valve foaming machine for a polyurethane thermal insulation pipe, which has the following beneficial effects: 1. The polyurethane valve foaming machine of the polyurethane thermal insulation pipe, when the polyurethane is foaming, the staff opens the stirring tank and puts the foaming material into the stirring tank, and drives the valve of the guide component to transport the raw liquid and nitrogen into the stirring tank, and then the staff starts the motor so that the output end of the motor drives the foaming component to rotate in the stirring tank, so that the raw liquid is stirred to produce foam and sufficient gas is provided in the stirring tank, making the foam denser; during the stirring of the raw liquid, the staff starts the hot air blower installed on both sides of the positioning frame, so that the airflow generated by the hot air blower flows along the ventilation cavity to the periphery of the stirring tank, so as to heat the stirring tank, so that the raw liquid in the stirring tank is mixed and reacted at a suitable temperature, which is helpful to improve the foaming quality and efficiency.

[0015] 2. The polyurethane valve foaming machine of the polyurethane insulation pipe is arranged at the output end of the motor through a sleeve. The staff starts the motor to make the output end of the motor drive the stirring rod to rotate. At this time, the extension rod and the external ring installed at the end of the stirring rod rotate at a position close to the injection pipe. At this time, the original liquid and gas injected into the tank body along the injection pipe are stirred by the rotating extension rod and the external ring to diffuse outward and contact with the foaming material, thereby improving the foaming efficiency.

[0016] 3. The polyurethane valve foaming machine of the polyurethane insulation pipe opens the control valve installed on the delivery pipe by the staff to deliver nitrogen and raw liquid to the storage chamber along the delivery pipe and the extraction pipe respectively. When the polyurethane is foaming, the staff closes the control valve and starts the extraction pump connected to the injection pipe to draw the nitrogen and raw liquid in the storage chambers on both sides upward along the extraction pipe and deliver them into the tank along the injection pipe, so as to add the raw liquid during foaming and provide sufficient gas in the tank to improve the stability of the foaming process in the tank.

[0017] 4. The polyurethane valve foaming machine of the polyurethane insulation pipe starts the motor through the staff, so that the output end of the motor drives the stirring rod to rotate. At this time, the positioning ring sleeved on the outside of the stirring rod drives the connecting plate to rotate. At this time, the rotor installed on the outside of the connecting plate rotates in the tank body. Multiple groups of rotors stir the foaming material and the original liquid. When the leakage plate installed on the outside of the rotor rotates in the tank body, the foam passes through the round hole, making the foam denser.

[0018] 5. The polyurethane valve foaming machine of the polyurethane insulation pipe rotates with the connecting plate through the leak plate, and the block installed in the slide is thrown outward by the centrifugal force generated by the rotation and slides to the top of the slide. The bending piece is set to a flexible material. When the leak plate rotates, the rotating ball installed in the clamping block rubs and collides with the inner wall of the tank body. At this time, the bending piece is deformed by the collision, and the rotating ball rotates on the surface of the tank body to knock the foam attached to the inner wall of the tank body when stirring and foaming, so as to avoid uneven adhesion and stirring of the foam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the external structure of a polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to the present invention; Figure 2 It is a schematic diagram of the external structure of a polyurethane valve foaming machine of a polyurethane thermal insulation pipe according to the present invention from another angle; Figure 3 It is a schematic cross-sectional structure diagram of the positioning frame of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the stirring tank of the present invention; Figure 5 This is a schematic diagram of the connection structure between the foaming component and the stirring tank of the present invention; Figure 6 It is a schematic diagram of the structure of the foaming component of the present invention; Figure 7 It is an enlarged structural schematic diagram of the stirring element of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the stirring member of the present invention; Fig. 9 It is a structural schematic diagram of the guide assembly of the present invention; Fig.10 It is an enlarged structural schematic diagram of the guide assembly of the present invention.

[0020] In the figure: 1. positioning frame; 2. stirring tank; 21. conduit; 22. tank body; 23. external ring; 24. sealing cover; 25. extension rod; 26. sleeve shaft; 27. stirring rod; 28. connecting shaft; 3. support seat; 4. frame; 5. guide assembly; 51. guide cavity; 52. control valve; 53. delivery pipe; 54. connecting cavity; 55. outer cover; 56. extraction pipe; 57. injection pipe; 58. storage cavity; 6. motor; 7. hot air blower; 8. ventilation cavity; 9. foaming assembly; 91. connecting plate; 92. leaking plate; 93. positioning ring; 94. rotating blade; 95. round hole; 96. stirring piece; 961. block; 962. bending piece; 963. rotating ball; 964. clamping block; 965. bending clamping plate; 966. limiting groove block; 97. slide groove; 98. round shaft. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0022] The first embodiment, as Figures 1 to 3As shown, the present invention provides a technical solution: a polyurethane valve foaming machine for a polyurethane insulation pipe, comprising: a frame 4, a support seat 3 is fixedly installed on one side of the top of the frame 4, a positioning frame 1 is fixedly installed above the support seat 3, hot air blowers 7 are fixedly installed on both sides of the outer surface of the positioning frame 1, a ventilation cavity 8 is provided between the support seat 3 and the positioning frame 1, and the hot air blower 7 is connected to the ventilation cavity 8; A stirring tank 2, wherein a motor 6 is fixedly mounted on the outer surface of the stirring tank 2, the stirring tank 2 is fixedly mounted on the top of the support seat 3, the stirring tank 2 is fixedly mounted inside the ventilation cavity 8, the positioning frame 1 is arranged above the stirring tank 2, and a gap is arranged between the positioning frame 1 and the stirring tank 2 through the ventilation cavity 8; The guide assembly 5 is used for conveying air, nitrogen and raw liquid. The guide assembly 5 is provided with two groups. The two groups of the guide assembly 5 are fixedly installed on both sides of the top of the frame 4. The guide assembly 5 is symmetrically arranged with the support seat 3 as the center. The guide assembly 5 passes through the positioning frame 1 and the stirring tank 2 and extends to the interior of the cavity thereof; The foaming component 9 is used to evenly mix the foaming material in the stirring tank 2. The foaming component 9 is rotatably installed inside the cavity of the stirring tank 2, and the foaming component 9 is frictionally adapted to the inner wall of the cavity of the stirring tank 2. When the polyurethane is foamed, the staff opens the stirring tank 2 and puts the foaming material into the stirring tank 2, and drives the valve of the guide component 5 to transport the stock liquid and nitrogen into the stirring tank 2, and then the staff starts the motor 6 so that the output end of the motor 6 drives the foaming component 9 to rotate in the stirring tank 2, so that the stock liquid is stirred to produce foam and sufficient gas is provided in the stirring tank 2, so that the foam is more dense; in the process of stirring the stock liquid, the staff starts the hot air blower 7 installed on both sides of the positioning frame 1, so that the airflow generated by the hot air blower 7 flows along the ventilation cavity 8 to the periphery of the stirring tank 2, so as to heat the stirring tank 2, so that the stock liquid in the stirring tank 2 is mixed and reacted at a suitable temperature, which helps to improve the foaming quality and efficiency.

[0023] The second embodiment is based on the first embodiment. Figures 4 to 8As shown, the stirring tank 2 comprises a tank body 22, a sealing cover 24 is threadedly mounted on the outer surface of the tank body 22, a conduit 21 is fixedly mounted on the surface of the tank body 22 away from the sealing cover 24, a connecting shaft 28 is rotatably mounted at the axis of the sealing cover 24, a sleeve shaft 26 is fixedly mounted on the outer surface of the connecting shaft 28, a stirring rod 27 is fixedly mounted on the surface of the connecting shaft 28 away from the sleeve shaft 26, an extension rod 25 is fixedly mounted on the end of the stirring rod 27, and an external connecting ring 23 is sleeved on the outer surface of the extension rod 25. The sleeve shaft 26 is sleeved on the output end of the motor 6, and the staff starts the motor 6 so that the output end of the motor 6 drives the stirring rod 27 to rotate. At this time, the extension rod 25 and the external connecting ring 23 installed at the end of the stirring rod 27 rotate at a position close to the injection pipe 57. At this time, the original liquid and gas injected into the tank body 22 along the injection pipe 57 are stirred by the rotating extension rod 25 and the external connecting ring 23 to diffuse outward and contact with the foaming material, thereby improving the foaming efficiency.

[0024] The sleeve shaft 26 is sleeved on the output end of the motor 6 , and the connecting shaft 28 is fixedly connected to the output end of the motor 6 through the sleeve shaft 26 . The connecting shaft 28 is rotatably installed in the tank body 22 .

[0025] The foaming component 9 includes a positioning ring 93, a connecting plate 91 is fixedly mounted on the outer surface of the positioning ring 93, a round shaft 98 is fixedly mounted on the outer surface of the connecting plate 91, a rotating blade 94 is rotatably mounted on the surface of the round shaft 98, and a leak plate 92 is fixedly mounted on the surface of the round shaft 98 away from the connecting plate 91. The staff opens the control valve 52 installed on the delivery pipe 53 to deliver nitrogen and raw liquid to the storage chamber 58 along the delivery pipe 53 and the extraction pipe 56 respectively. When the polyurethane is foamed, the staff closes the control valve 52 and starts the extraction pump connected to the injection pipe 57 to extract the nitrogen and raw liquid in the storage chambers 58 on both sides upward along the extraction pipe 56 and deliver them to the tank body 22 along the injection pipe 57, so as to facilitate the addition of raw liquid during foaming and provide sufficient gas in the tank body 22 to improve the stability of the foaming process in the tank body.

[0026] The positioning ring 93 is sleeved on the surface of the stirring rod 27 , and three connecting plates 91 are provided. The three connecting plates 91 are distributed on the surface of the positioning ring 93 in a circular shape.

[0027] The surface of the leak plate 92 is provided with a circular hole 95, and two sides of the outer surface of the leak plate 92 are provided with a slide groove 97, and a stirring member 96 is slidably installed inside the slide groove 97, and the stirring member 96 is frictionally adapted to the inner wall of the tank body 22. The staff starts the motor 6, so that the output end of the motor 6 drives the stirring rod 27 to rotate, and the positioning ring 93 sleeved on the outside of the stirring rod 27 drives the connecting plate 91 to rotate, and the rotating blades 94 installed on the outside of the connecting plate 91 rotate in the tank body 22. The multiple groups of rotating blades 94 stir the foaming material and the original liquid, and when the leak plate 92 installed on the outside of the rotating blades 94 rotates in the tank body 22, the foam passes through the circular hole 95, making the foam more dense.

[0028] The stirring member 96 includes a curved clamp 965, and a clamp block 964 is fixedly installed on the outer surface of the curved clamp 965. The clamp blocks 964 are provided in three groups, and the three groups of clamp blocks 964 are adapted to the curved clamp 965. A rotating ball 963 is provided inside the clamp block 964. The rotating ball 963 is rotatably installed inside the clamp block 964 and the curved clamp 965, and the rotating ball 963 is frictionally adapted to the inner wall of the tank body 22.

[0029] The two sides of the outer surface of the curved clamping plate 965 are fixedly installed with limited slot blocks 966, and the inside of the limited slot block 966 is fixedly installed with a curved sheet 962. The surface of the curved sheet 962 is fixedly installed with a clamping block 961, and the clamping block 961 is clamped inside the slide groove 97, and the clamping block 961 is slidably adapted to the slide groove 97. When the drain plate 92 rotates with the connecting plate 91, the clamping block 961 installed in the slide groove 97 is thrown outward and slides to the top of the slide groove 97 by the centrifugal force generated by the rotation. The curved sheet 962 is set to a flexible material. When the drain plate 92 rotates, the rotating ball 963 installed in the clamping block 964 rubs and collides with the inner wall of the tank body 22. At this time, the curved sheet 962 is deformed by the collision, and the rotating ball 963 rotates on the surface of the tank body 22 to knock the foam attached to the inner wall of the tank body 22 during stirring and foaming, so as to avoid uneven foam attachment and stirring.

[0030] The third embodiment is based on the first and second embodiments. Figures 9 and 10 As shown, the guiding assembly 5 includes an outer cover 55, and connecting cavities 54 are fixedly installed on both sides of the outer surface of the outer cover 55, and an injection pipe 57 is fixedly installed on the surface of the connecting cavity 54 close to the positioning frame 1, and a guiding cavity 51 is fixedly installed on the outer surface of the connecting cavity 54, and a delivery pipe 53 is fixedly installed on the bottom of the guiding cavity 51, and a control valve 52 is movably installed on the surface of the delivery pipe 53, and an extraction pipe 56 is fixedly installed on the top of the connecting cavity 54, and a storage cavity 58 is fixedly installed on the bottom of the extraction pipe 56.

[0031] The storage chamber 58 is fixedly mounted on both sides of the top of the frame 4 , and the injection pipe 57 penetrates the positioning frame 1 and the conduit 21 and extends to the interior of the cavity of the tank body 22 .

[0032] During use, when the polyurethane is foaming, the staff opens the stirring tank 2 and puts the foaming material into the stirring tank 2, and drives the valve of the guide component 5 to transport the raw liquid and nitrogen into the stirring tank 2, and then the staff starts the motor 6 so that the output end of the motor 6 drives the foaming component 9 to rotate in the stirring tank 2, so that the raw liquid is stirred to produce foam and sufficient gas is provided in the stirring tank 2 to make the foam denser; in the process of stirring the raw liquid, the staff starts the hot air blower 7 installed on both sides of the positioning frame 1, so that the airflow generated by the hot air blower 7 flows along the ventilation cavity 8 to the periphery of the stirring tank 2, so as to heat the stirring tank 2, so that the raw liquid in the stirring tank 2 is mixed and reacted at a suitable temperature, which helps to improve the foaming quality and efficiency.

[0033] The staff opens the control valve 52 installed on the delivery pipe 53 to deliver the nitrogen and the raw liquid to the storage chamber 58 along the delivery pipe 53 and the extraction pipe 56 respectively. When the polyurethane is foaming, the staff closes the control valve 52 and starts the extraction pump connected to the injection pipe 57 to extract the nitrogen and raw liquid in the storage chambers 58 on both sides upward along the extraction pipe 56 and deliver them to the tank body 22 along the injection pipe 57, so as to add the raw liquid during foaming and provide sufficient gas in the tank body 22 to improve the stability of the foaming process in the tank body.

[0034] The sleeve shaft 26 is sleeved on the output end of the motor 6. The staff starts the motor 6, so that the output end of the motor 6 drives the stirring rod 27 to rotate. At this time, the extension rod 25 and the external ring 23 installed at the end of the stirring rod 27 rotate at a position close to the injection pipe 57. At this time, the original liquid and gas injected into the tank body 22 along the injection pipe 57 are stirred by the rotating extension rod 25 and the external ring 23 to diffuse outward and contact with the foaming material, thereby improving the foaming efficiency.

[0035] The staff starts the motor 6 so that the output end of the motor 6 drives the stirring rod 27 to rotate. At this time, the positioning ring 93 mounted on the outside of the stirring rod 27 drives the connecting plate 91 to rotate. At this time, the rotating blades 94 installed on the outside of the connecting plate 91 rotate in the tank body 22. The multiple groups of rotating blades 94 stir the foaming material and the original liquid. When the leakage plate 92 installed on the outside of the rotating blades 94 rotates in the tank body 22, the foam passes through the circular hole 95, making the foam denser.

[0036] When the leakage plate 92 rotates with the connecting plate 91, the block 961 installed in the slide groove 97 is thrown outward by the centrifugal force generated by the rotation and slides to the top of the slide groove 97. The bent piece 962 is set to a flexible material. When the leakage plate 92 rotates, the rotating ball 963 installed in the clamping block 964 rubs and collides with the inner wall of the tank body 22. At this time, the bent piece 962 is deformed by the collision, and the rotating ball 963 rotates on the surface of the tank body 22 to knock the foam attached to the inner wall of the tank body 22 when stirring and foaming, so as to avoid uneven stirring of the foam attachment.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyurethane valve foaming machine for a polyurethane insulation pipe, characterized in that: include: A frame (4), a support seat (3) is fixedly mounted on one side of the top of the frame (4), a positioning frame (1) is fixedly mounted above the support seat (3), hot air blowers (7) are fixedly mounted on both sides of the outer surface of the positioning frame (1), a ventilation cavity (8) is provided between the support seat (3) and the positioning frame (1), and the hot air blower (7) is connected to the ventilation cavity (8); A stirring tank (2), wherein a motor (6) is fixedly mounted on the outer surface of the stirring tank (2), the stirring tank (2) is fixedly mounted on the top of the support base (3), the stirring tank (2) is fixedly mounted inside the ventilation cavity (8), the positioning frame (1) is arranged above the stirring tank (2), and a gap is arranged between the positioning frame (1) and the stirring tank (2) through the ventilation cavity (8); A guide assembly (5), the guide assembly (5) is used for conveying air, nitrogen and raw liquid, the guide assembly (5) is provided with two groups, the two groups of the guide assembly (5) are fixedly mounted on both sides of the top of the frame (4), the guide assembly (5) is symmetrically arranged with the support seat (3) as the center, and the guide assembly (5) penetrates the positioning frame (1) and the stirring tank (2) and extends to the interior of the cavity thereof; A foaming component (9), the foaming component (9) being used to uniformly mix the foaming material in the stirring tank (2), the foaming component (9) being rotatably mounted inside the cavity of the stirring tank (2), and the foaming component (9) being frictionally matched with the inner wall of the cavity of the stirring tank (2).

2. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 1, characterized in that: The stirring tank (2) comprises a tank body (22), a sealing cover (24) being threadedly mounted on the outer surface of the tank body (22), a conduit (21) being fixedly mounted on the surface of the tank body (22) on a side away from the sealing cover (24), a connecting shaft (28) being rotatably mounted at the axis of the sealing cover (24), a sleeve shaft (26) being fixedly mounted on the outer surface of the connecting shaft (28), a stirring rod (27) being fixedly mounted on the surface of the connecting shaft (28) on a side away from the sleeve shaft (26), an extension rod (25) being fixedly mounted on the end of the stirring rod (27), and an outer connecting ring (23) being sleeved on the outer surface of the extension rod (25).

3. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 2, characterized in that: The sleeve shaft (26) is sleeved on the output end of the motor (6), the connecting shaft (28) is fixedly connected to the output end of the motor (6) via the sleeve shaft (26), and the connecting shaft (28) is rotatably mounted in the tank body (22).

4. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 1, characterized in that: The guide assembly (5) comprises an outer cover (55), connecting cavities (54) are fixedly mounted on both sides of the outer surface of the outer cover (55), an injection pipe (57) is fixedly mounted on the surface of the connecting cavity (54) close to the positioning frame (1), a guide cavity (51) is fixedly mounted on the outer surface of the connecting cavity (54), a delivery pipe (53) is fixedly mounted on the bottom of the guiding cavity (51), a control valve (52) is movably mounted on the surface of the delivery pipe (53), an extraction pipe (56) is fixedly mounted on the top of the connecting cavity (54), and a storage cavity (58) is fixedly mounted on the bottom of the extraction pipe (56).

5. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 4, characterized in that: The storage chamber (58) is fixedly mounted on both sides of the top of the frame (4), and the injection pipe (57) passes through the positioning frame (1) and the guide tube (21) and extends to the interior of the chamber of the tank body (22).

6. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 1, characterized in that: The foaming component (9) comprises a positioning ring (93), a connecting plate (91) being fixedly mounted on the outer surface of the positioning ring (93), a circular shaft (98) being fixedly mounted on the outer surface of the connecting plate (91), a rotating blade (94) being rotatably mounted on the surface of the circular shaft (98), and a drain plate (92) being fixedly mounted on the surface of the circular shaft (98) away from the connecting plate (91).

7. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 6, characterized in that: The positioning ring (93) is sleeved on the surface of the stirring rod (27), and three connecting plates (91) are provided. The three connecting plates (91) are distributed in a circular shape on the surface of the positioning ring (93).

8. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 6, characterized in that: A circular hole (95) is provided on the surface of the leaking plate (92), and sliding grooves (97) are provided on both sides of the outer surface of the leaking plate (92). A stirring member (96) is slidably mounted inside the sliding groove (97), and the stirring member (96) is frictionally fitted with the inner wall of the tank body (22).

9. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 8, characterized in that: The stirring member (96) comprises an arc-bent clamping plate (965), a clamping block (964) being fixedly mounted on the outer surface of the arc-bent clamping plate (965), three groups of the clamping blocks (964) being provided, the three groups of the clamping blocks (964) being matched with the arc-bent clamping plate (965), a rotating ball (963) being provided inside the clamping block (964), the rotating ball (963) being rotatably mounted inside the clamping block (964) and the arc-bent clamping plate (965), and the rotating ball (963) being frictionally matched with the inner wall of the tank body (22).

10. The polyurethane valve foaming machine for a polyurethane thermal insulation pipe according to claim 9, characterized in that: Limiting slot blocks (966) are fixedly mounted on both sides of the outer surface of the curved clamping plate (965); a curved sheet (962) is fixedly mounted inside the limiting slot block (966); a clamping block (961) is fixedly mounted on the surface of the curved sheet (962); the clamping block (961) is clamped inside the slide groove (97); and the clamping block (961) is slidably adapted to the slide groove (97).

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