Foaming equipment for directly-buried polyurethane thermal insulation pipe production

Abstract

The invention discloses foaming equipment for direct burial polyurethane thermal insulation pipe production, relates to the technical field of foaming equipment, solves the technical problem of inconvenience in stirring, and comprises a foaming table with a mounting rack, and a first charging barrel and a second charging barrel are fixedly mounted at the top of the mounting rack; a mixing barrel with a first hose is fixedly mounted on the side, close to the foaming table, of the mounting frame, a material injection gun with a second hose is arranged at the end, away from the mounting frame, of the mixing barrel, and stirring assemblies are arranged on the first material barrel and the second material barrel; the stirring assembly comprises a connecting plate fixedly mounted between the first charging barrel and the second charging barrel, and a moving frame with an extrusion block is slidably mounted on the side, away from the foaming table, of the connecting plate; the stirring capability of the device can be improved, the uniform heating capability of the device can be improved, and the stirring working efficiency of the device can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of foaming equipment, and in particular to a foaming equipment for producing directly buried polyurethane thermal insulation pipes. Background Art

[0002] Polyurethane insulated pipe, full name: high-density polyethylene plastic outer sheathed polyurethane foam prefabricated direct-buried insulation pipe. The specific structure of the polyurethane foam insulation pipe is that both the inner and outer pipes are plastic pipes, and a polyurethane foam insulation layer is used between the pipes. The polyurethane insulation pipe requires a foaming device during the production process. When the existing foaming device is in use, the vibration generated by the stirring of the raw materials can easily drive the entire stirring device to shake. A large shaking amplitude can easily damage the internal components of the stirring shell and easily affect the foaming effect. For example, the Chinese invention patent with patent publication number CN116001182A solves the problem that the shaking amplitude can easily damage the internal components of the stirring shell and easily affect the foaming effect.

[0003] However, when the above-mentioned device is in use, the reaction temperatures of the black and white raw materials are different, resulting in a slow foaming speed, which makes it inconvenient to evenly heat the raw materials and stir them evenly, affecting the stirring ability of the device, the uniform heating ability of the device, the stirring efficiency of the device, and the foaming production efficiency of the device. For this reason, based on the technical defects, we have proposed a foaming equipment for the production of direct-buried polyurethane thermal insulation pipes that can solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide a foaming device for producing direct-buried polyurethane thermal insulation pipes to solve the following technical problems:

[0005] Due to the different reaction temperatures of the black and white raw materials, the foaming speed is slow, which makes it inconvenient to heat the raw materials evenly and to stir them evenly, affecting the stirring ability of the device, the uniform heating ability of the device, the stirring efficiency of the device, and the foaming production efficiency of the device.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A foaming device for producing direct-buried polyurethane thermal insulation pipes, comprising a foaming table with a mounting frame, a first barrel and a second barrel are fixedly mounted on the top of the mounting frame, a mixing barrel with a first hose is fixedly mounted on one side of the mounting frame close to the foaming table, an injection gun with a second hose is arranged at one end of the mixing barrel away from the mounting frame, and a stirring assembly is arranged on the first barrel and the second barrel;

[0008] The stirring assembly includes a connecting plate fixedly installed between the first barrel and the second barrel, a moving frame with an extrusion block is slidably installed on the side of the connecting plate away from the frothing table, a cam is rotatably installed on the side of the connecting plate close to the moving frame, a balance bar with a fixed plate is fixedly installed on the side of the moving frame close to the extrusion block, a triangular column is slidably penetrated and installed on one end of the first barrel and the second barrel close to the extrusion block, a baffle with a first spring is fixedly installed on the side of the triangular column away from the frothing table, a stirring rod with a limiting plate is fixedly installed on the end of the triangular column away from the baffle, a stirring disk is fixedly installed on the stirring rod, and a double-head motor is fixedly installed between the first barrel and the second barrel.

[0009] As a further solution of the present invention: a mixing rod with a mixing plate is rotatably installed in the mixing barrel, one output end of the double-headed motor slides through the mounting frame and is fixedly installed on the mixing rod, and the other output end of the double-headed motor slides through the connecting plate and is fixedly installed on the cam.

[0010] As a further solution of the present invention: two temperature controllers are respectively installed on both sides of the mounting frame, heating wires are installed in the first barrel and the second barrel, the temperature controller is electrically connected to the heating wires, and the limit plate is fixedly installed at a position where the stirring rod is away from the mounting frame.

[0011] As a further solution of the present invention: the baffle is fixedly installed on the side of the triangular column away from the extrusion block, a guide rod is slidably installed on the baffle, the first spring is nested on the outer surface of the guide rod, a U-shaped groove is opened at one end of the extrusion block away from the movable frame, and the guide rod is slidably installed in the U-shaped groove.

[0012] As a further solution of the present invention: the balance bar is slidably mounted on the fixed plate, and the fixed plate is fixedly mounted on the first barrel and the second barrel respectively, and the number of the extrusion blocks is two, and they are fixedly mounted on both sides of the moving frame close to the first barrel and the second barrel respectively.

[0013] As a further solution of the present invention: a sealing assembly is provided on the mixing barrel, and the sealing assembly includes a retractable fixed block fixedly mounted on the mixing barrel, a reciprocating groove is opened on the side of the fixed block away from the mixing barrel, a reciprocating screw with a reciprocating block is rotatably mounted in the reciprocating groove, a first motor is fixedly mounted on one end of the fixed block away from the mounting frame, and a unloading push plate is rotatably mounted on the side of the reciprocating groove away from the first motor.

[0014] As a further solution of the present invention: a placing plate with a material discharge hole is rotatably installed on one end of the reciprocating block close to the material discharge push plate, a material discharge trough is provided on the top surface of the placing plate, an extrusion plate is slidably installed in the material discharge trough, sliding grooves are provided on the inner walls on both sides of the material discharge trough, a sliding block is slidably installed in the sliding groove, and a second spring is fixedly installed on the side of the extrusion plate away from the material discharge hole.

[0015] As a further solution of the present invention: one end of the slider close to the second spring is fixedly installed on the extrusion plate, and the end of the second spring away from the extrusion plate is fixedly installed on the inner wall of the discharge trough close to the reciprocating block. Rectangular through holes are opened on the inner walls on both sides of the reciprocating trough, and a limiting block is installed by sliding through the rectangular through holes.

[0016] As a further solution of the present invention: a preheating component is arranged on the foaming table, a transport groove and a foaming groove are opened on the side of the foaming table close to the injection gun, a preheating fan is fixedly installed at one end of the foaming table, a conveyor belt is rotatably installed at a position of the foaming table away from one end of the preheating fan, and a second motor is fixedly installed on the side of the foaming table close to the foaming groove.

[0017] As a further solution of the present invention: a storage groove is provided on a side of the foaming table close to the mounting frame, a first electric telescopic rod is fixedly installed on a position of the mounting frame close to the storage groove, a push plate is fixedly installed on a side of the first electric telescopic rod away from the mounting frame, and a positioning groove is provided at a position of the transport groove corresponding to the injection gun.

[0018] Beneficial effects of the present invention:

[0019] (1) The moving frame in the stirring assembly drives the extrusion block on the moving frame to squeeze the triangular column, so that the triangular column drives the stirring plate to move up and down under the action of the first spring to perform the stirring operation, which is convenient for repeated heating of the stirring raw materials, convenient for uniform heating, convenient for uniform stirring operation, and is conducive to improving the stirring capacity of the device, is conducive to improving the uniform heating capacity of the device, is conducive to improving the stirring work efficiency of the device, and is conducive to improving the work efficiency of the foaming production of the device;

[0020] (2) The material discharge push plate in the plugging assembly is driven by the double-head motor to squeeze the plugging block in the discharge trough through the material discharge hole and seal it on the injection port of the insulation pipe, which is convenient for sealing the insulation pipe after the injection is completed, and avoids the situation of manual sealing by the staff after the injection is completed, which is convenient for the sealing operation, and is conducive to improving the working efficiency of the device plugging, and is conducive to improving the working efficiency of the device injection and foaming;

[0021] (3) The preheating fan in the preheating assembly facilitates the preheating operation, shortens the waiting time for foaming, and facilitates the preheating of the insulated steel pipe for injecting raw materials to push the material out, which is beneficial to improving the turnover efficiency of the device, improving the preheating capacity of the device, and improving the working efficiency of the foaming production of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of a foaming device for producing a direct-buried polyurethane thermal insulation pipe according to the present invention;

[0024] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 4 It is a schematic diagram of the internal structure of a foaming device for producing a direct-buried polyurethane thermal insulation pipe according to the present invention;

[0027] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at C in the middle;

[0028] Figure 6 It is a schematic diagram of the structure of a foaming device for producing a direct-buried polyurethane thermal insulation pipe according to the present invention when viewed from above;

[0029] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at D in the middle;

[0030] Figure 8 yes Figure 6 Schematic diagram of the enlarged structure at E in the middle.

[0031] In the figure: 1, foaming table; 2, mounting frame; 3, mixing barrel; 4, stirring assembly; 41, connecting plate; 42, moving frame; 43, cam; 44, extrusion block; 45, balance bar; 46, triangular column; 47, guide rod; 48, first spring; 49, baffle; 410, double-headed motor; 411, stirring plate; 412, temperature controller; 413, stirring rod; 414, limit plate; 415, mixing rod; 416, mixing plate; 5, blocking assembly; 51, fixed block; 52, reciprocating groove; 53, reciprocating screw; 54, reciprocating block; 55, rectangular through hole; 56, limit block; 57, first motor; 58, placement plate; 59, unloading hole; 510, unloading push plate; 511, unloading trough; 512, extrusion plate; 513, slider; 514, second spring; 515, slide; 6, preheating component; 61, transportation trough; 62, transportation belt; 63, second motor; 64, positioning groove; 65, foaming groove; 66, first electric telescopic rod; 67, push plate; 68, storage groove; 69, preheating fan; 7, first barrel; 8, second barrel; 9, injection gun; 10, first hose; 11, second hose. DETAILED DESCRIPTION

[0032] 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.

[0033] Embodiment 1

[0034] See also Figure 1-Figure 8 As shown, the present invention is a foaming equipment for producing direct-buried polyurethane thermal insulation pipes, comprising a foaming table 1 with a mounting frame 2, the mounting frame 2 is fixedly mounted on one side of the foaming table 1, control valves for controlling flow are respectively installed in the mounting frame 2, a first barrel 7 and a second barrel 8 are fixedly mounted on the top of the mounting frame 2, the first barrel 7 and the second barrel 8 are respectively filled with two raw materials for foaming, polyurethane rigid foam composite polyether is also called white material, and polymerized MDI is also called black material, a mixing barrel 3 with a first hose 10 is fixedly mounted on one side of the mounting frame 2 close to the foaming table 1, the number of the first hoses 10 is two, the ends of the two first hoses 10 away from the mixing barrel 3 respectively penetrate the mounting frame 2 and are fixedly mounted on the first barrel 7 and the second barrel 8, the two first hoses 10 are respectively communicated with the first barrel 7 and the second barrel 8, an injection gun 9 with a second hose 11 is arranged at the end of the mixing barrel 3 away from the mounting frame 2, the other end of the second hose 11 is connected and mounted on the mixing barrel 3, and a stirring assembly 4 is arranged on the first barrel 7 and the second barrel 8;

[0035] The stirring assembly 4 includes a connecting plate 41 fixedly installed between the first barrel 7 and the second barrel 8, a moving frame 42 with an extrusion block 44 is slidably installed on the side of the connecting plate 41 away from the foaming table 1, and the extrusion block 44 is fixedly installed on the side of the moving frame 42 away from the cam 43. The cam 43 is rotatably installed on the side of the connecting plate 41 close to the moving frame 42. The cam 43 slides on the inner wall of the moving frame 42 to squeeze the moving frame 42 to reciprocate on the foaming table 1. A balance bar 45 with a fixed plate is fixedly installed on the side of the moving frame 42 close to the extrusion block 44. The balance bar 45 plays a role in balancing and stabilizing the moving frame 42. The ends of the first barrel 7 and the second barrel 8 close to the extrusion block 44 are both slidably penetrated and installed with a triangular column 46. The triangular column 46 An inclined surface is provided at one end close to the extrusion block 44, and an inclined surface is provided at one end of the extrusion block 44 close to the triangular prism 46. The two inclined surfaces are matched with each other, which is convenient for extruding the triangular prism 46 so that the triangular prism 46 drives the baffle 49 to slide on the guide rod 47 to squeeze the first spring 48, so that the first spring 48 is in a compressed state, and at the same time, the triangular prism 46 drives the stirring plate 411 to move up and down through the limit plate 414 and the stirring rod 413, so that the stirring plate 411 is convenient for stirring up and down in the first barrel 7 and the second barrel 8, so as to facilitate uniform heating of the raw materials. A baffle 49 with the first spring 48 is fixedly installed on the side of the triangular prism 46 away from the frothing table 1, and a stirring rod 413 with a limit plate 414 is fixedly installed on the end of the triangular prism 46 away from the baffle 49. A stirring disk 411 is fixedly installed on the stirring rod 413, and the stirring rod 413 drives the stirring disk 411 to move up and down in the first barrel 7 and the second barrel 8, thereby stirring the raw materials in the first barrel 7 and the second barrel 8, making it easier for the first barrel 7 and the second barrel 8 to evenly heat the raw materials. A double-headed motor 410 is fixedly installed between the first barrel 7 and the second barrel 8.

[0036] A mixing rod 415 with a mixing plate 416 is rotatably installed in the mixing barrel 3, and the mixing plate 416 is fixedly installed on the mixing rod 415. The mixing rod 415 drives the mixing plate 416 to rotate in the mixing barrel 3, so as to mix the two raw materials in the first barrel 7 and the second barrel 8, so as to facilitate uniform mixing operation. One of the output ends of the double-headed motor 410 slides through the mounting frame 2 and is fixedly installed on the mixing rod 415, and the other output end of the double-headed motor 410 slides through the connecting plate 41 and is fixedly installed on the cam 43. Two temperature controllers 412 are respectively installed on both sides of the mounting frame 2. Heating wires are installed in the first barrel 7 and the second barrel 8. The heating wires are convenient for heating the raw materials in the first barrel 7 and the second barrel 8, so as to facilitate foaming operation after mixing. The temperature controller 412 is electrically connected to the heating wire. The limit plate 414 is fixedly installed at a position where the stirring rod 413 is away from the mounting frame 2, and the limit plate 414 plays the role of limiting and stabilizing the stirring rod 413.

[0037] The baffle plate 49 is fixedly mounted on the side of the triangular column 46 away from the extrusion block 44. A guide rod 47 is slidably installed on the baffle plate 49. There are two guide rods 47. One end of one guide rod 47 is fixedly mounted on the top surface of the first barrel 7, and one end of the other guide rod 47 is fixedly mounted on the top surface of the second barrel 8. The guide rod 47 plays a role in guiding and stabilizing the baffle plate 49. The other end of the first spring 48 is fixedly mounted on the top surface of the first barrel 7 or the second barrel 8. There are two first springs 48, one of which is fixedly mounted on the top surface of the first barrel 7, and the other is fixedly mounted on the top surface of the second barrel 8. The first spring 48 is nested on the outer surface of the guide rod 47. A U-shaped groove is provided at one end of the extrusion block 44 away from the moving frame 42. The guide rod 47 is slidably mounted in the U-shaped groove to limit and stabilize the guide rod 47. The other end of 7 is fixedly mounted on the top surface of the first barrel 7 or the second barrel 8, the balance rod 45 is slidably mounted on the fixed plate, and the fixed plates are respectively fixedly mounted on the first barrel 7 and the second barrel 8, there are two extrusion blocks 44, and they are respectively fixedly mounted on the two sides of the moving frame 42 close to the first barrel 7 and the second barrel 8, the double-headed motor 410 not only drives the mixing plate 416 to rotate in the mixing barrel 3, but also drives the cam 43 to rotate in the moving frame 42, and at the same time makes the moving frame 42 drive the extrusion block 44 to extrude the triangular prism 46, so that the triangular prism 46 drives the stirring plate 411 to stir up and down in the first barrel 7 and the second barrel 8 through the stirring rod 413, which is convenient for the repeated heating of the stirring raw materials, convenient for uniform heating, convenient for uniform stirring operation, which is beneficial to improving the stirring capacity of the device, beneficial to improving the uniform heating capacity of the device, and beneficial to improving the working efficiency of the stirring device.

[0038] Embodiment 2

[0039] See also Figure 1 , Figure 3 , Figure 6 and Figure 8As shown, on the basis of the first embodiment, a plugging assembly 5 is provided on the mixing barrel 3, and the plugging assembly 5 includes a retractable fixed block 51 fixedly mounted on the mixing barrel 3, a retractable cylinder is fixedly mounted in the fixed block 51, and it is convenient to drive the fixed block 51 to move up and down, and a reciprocating groove 52 is provided on the side of the fixed block 51 away from the mixing barrel 3, and a reciprocating screw 53 with a reciprocating block 54 is rotatably installed in the reciprocating groove 52, and the reciprocating block 54 reciprocates in the reciprocating groove 52, and the fixed block 51 is fixedly mounted on one end away from the mounting frame 2. The first motor 57 and the side of the reciprocating groove 52 away from the first motor 57 are rotatably installed with a material unloading push plate 510, the output end of the first motor 57 slides through the reciprocating groove 52 and is fixedly installed on the reciprocating screw 53, the rotating shaft of the material unloading push plate 510 slides through the reciprocating groove 52 and is fixedly installed on the reciprocating screw 53, the material unloading push plate 510 is convenient for sealing the injection port on the insulation pipe with the sealing block in the placement plate 58, so as to facilitate the sealing operation, and the sealing block has a certain viscosity, so it is convenient to bond to the insulation steel pipe.

[0040] A placing plate 58 with a material discharge hole 59 is rotatably installed at one end of the reciprocating block 54 near the material discharge push plate 510, and a material discharge groove 511 is provided on the top surface of the placing plate 58. A blocking block is placed in the material discharge groove 511 to block the material injection port on the insulation pipe. An extrusion plate 512 is slidably installed in the material discharge groove 511. Slide grooves 515 are provided on the inner walls on both sides of the material discharge groove 511. A slider 513 is slidably installed in the slide groove 515. A second spring 514 is fixedly installed on the side of the extrusion plate 512 away from the material discharge hole 59. The extrusion plate 512 clamps and stabilizes the blocking block in the material discharge groove 511 under the action of the second spring 514. The slider 513 is fixedly installed at one end near the second spring 514 On the extrusion plate 512, one end of the second spring 514 away from the extrusion plate 512 is fixedly installed on the inner wall of the discharge trough 511 close to the reciprocating block 54. Rectangular through holes 55 are opened on the inner walls on both sides of the reciprocating groove 52. Limiting blocks 56 are installed slidingly through the rectangular through holes 55. When the material discharge push plate 510 rotates, the blocking block in the discharge trough 511 is squeezed through the material discharge hole 59 to block the injection port of the insulation pipe, which is convenient for blocking the insulation pipe after the injection is completed. The sealing operation is carried out, which tries to avoid the situation where the staff manually blocks the material after the injection is completed, facilitates the sealing operation, and is beneficial to improving the working efficiency of the device sealing and the working efficiency of the device injection and foaming.

[0041] Embodiment 3

[0042] See also Figure 1 , Figure 4 and Figure 6As shown, a preheating component 6 is provided on the foaming station 1, and a transport trough 61 and a foaming trough 65 are provided on one side of the foaming station 1 close to the injection gun 9. The transport trough 61 is used to place the insulated steel pipe that needs to be injected with raw materials, and the foaming trough 65 is used to store the insulated steel pipe waiting for foaming after being blocked. A preheating fan 69 is fixedly installed at one end of the foaming station 1, and the preheating fan 69 blows air to the insulated steel pipe to facilitate preheating of the insulated steel pipe and shorten the foaming time of the mixed raw materials in the insulated steel pipe, which is beneficial to improving the foaming work efficiency of the device. A conveyor belt 62 is rotatably installed at a position of the foaming station 1 away from one end of the preheating fan 69, and the conveyor belt 62 is convenient for transporting the insulated steel pipe to the bottom of the injection gun 9. A second motor 63 is fixedly installed on one side of the foaming station 1 close to the foaming trough 65, and the output end of the second motor 63 slides through the transport trough 61 and is fixedly installed on the driving mechanism of the conveyor belt 62 On the axis, a storage groove 68 is provided on the side of the foaming table 1 close to the mounting frame 2, and a first electric telescopic rod 66 is fixedly installed at the position of the mounting frame 2 close to the storage groove 68, and a pushing plate 67 is fixedly installed on the side of the first electric telescopic rod 66 away from the mounting frame 2, and the pushing plate 67 slides in the storage groove 68, so that the first electric telescopic rod 66 drives the pushing plate 67 to push the insulated steel pipe after the injection in the transport groove 61 from the transport groove 61 to the foaming groove 65, so as to wait for the foaming to be completed. A positioning groove 64 is provided at the position of the transport groove 61 corresponding to the injection gun 9, and the positioning groove 64 plays the role of positioning the insulated steel pipe, which is convenient for preheating operation, shortening the waiting time for foaming, and facilitating the preheating of the insulated steel pipe injected with raw materials to push the material, which is beneficial to improving the turnover efficiency of the device, improving the preheating capacity of the device, and improving the working efficiency of the foaming production of the device.

[0043] Working principle of the present invention: When using the device, first place the insulated steel pipe to be injected with the foaming raw material in the transport trough 61, and then start the second motor 63, so that the output end of the second motor 63 drives the conveyor belt 62 to rotate, so that the conveyor belt 62 moves to the bottom of the injection gun 9, and at the same time, the insulated steel pipe is pressed against the preheating fan 69, and then the preheating fan 69 is started to blow air to preheat the insulated steel pipe, and at the same time, the temperature controller 412 is started to control the heating wires in the first barrel 7 and the second barrel 8 to heat the raw materials, and at the same time, the double-headed motor 410 is started, so that one output end of the double-headed motor 410 drives the cam 43, so that the cam 43 is on the connecting plate 4 1, and at the same time, the cam 43 slides on the inner wall of the moving frame 42, and at the same time, the moving frame 42 drives the extrusion block 44 to squeeze the triangular column 46, so that the triangular column 46 drives the baffle 49 to slide on the guide rod 47 and squeeze the first spring 48 under the action of the inclined surface, so that the first spring 48 is in a compressed state, and at the same time, the extrusion block 44 is inserted into the U-shaped groove, and at the same time, the moving frame 42 drives the balance bar 45 to slide back and forth on the fixed plate, and at the same time, the triangular column 46 drives the stirring plate 411 to move up and down in the first barrel 7 and the second barrel 8 through the limit plate 414 and the stirring rod 413, and at the same time, the other output end of the double-headed motor 410 drives the mixing plate 411 to move up and down in the first barrel 7 and the second barrel 8. The mixing rod 415 is combined to make the mixing rod 415 drive the mixing plate 416 to rotate in the mixing barrel 3 to mix the two raw materials. At the same time, the control valve is started to inject the raw materials in the first barrel 7 and the second barrel 8 into the mixing barrel 3 through the first hose 10 for mixing. Then, the cylinder on the fixed block 51 is started to drive the fixed block 51 to move toward the insulation steel pipe. Then, the injection gun 9 is started to inject the foaming raw material into the insulation steel pipe. Then, the first motor 57 is started to make the output end of the first motor 57 drive the reciprocating screw 53 and the unloading push plate 510 to move synchronously. At the same time, the reciprocating screw 53 drives the reciprocating block 54 to slide in the reciprocating groove 52. The reciprocating block 54 drives the limit block 56 to slide in the rectangular through hole 55, and at the same time, the reciprocating block 54 drives the injection gun 9 to separate from the insulated steel pipe, and at the same time, the reciprocating block 54 drives the placement plate 58 to slide on the insulated steel pipe. When the unloading hole 59 moves to the injection port, the rotating unloading push plate 510 squeezes the blocking block in the discharge trough 511 onto the insulated steel pipe through the unloading hole 59, and then starts the first electric telescopic rod 66, so that the first electric telescopic rod 66 drives the push plate 67 to slide in the storage groove 68, so that the push plate 67 pushes the insulated steel pipe that has been filled and sealed in the transport groove 61 into the foaming groove 65 to wait for foaming to be completed, which is convenient for unloading operations.

[0044] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A foaming device for producing direct-buried polyurethane thermal insulation pipes, comprising a foaming table (1) with a mounting frame (2), characterized in that: A first barrel (7) and a second barrel (8) are fixedly mounted on the top of the mounting frame (2); a mixing barrel (3) with a first hose (10) is fixedly mounted on a side of the mounting frame (2) close to the foaming table (1); an injection gun (9) with a second hose (11) is arranged at one end of the mixing barrel (3) away from the mounting frame (2); and a stirring assembly (4) is arranged on the first barrel (7) and the second barrel (8); The stirring assembly (4) comprises a connecting plate (41) fixedly mounted between the first barrel (7) and the second barrel (8); a moving frame (42) with an extrusion block (44) is slidably mounted on a side of the connecting plate (41) away from the frothing table (1); a cam (43) is rotatably mounted on a side of the connecting plate (41) close to the moving frame (42); a balancing rod (45) with a fixed plate is fixedly mounted on a side of the moving frame (42) close to the extrusion block (44); the first barrel (7) and the second barrel (8) A triangular column (46) is slidably installed at one end close to the extrusion block (44), a baffle (49) with a first spring (48) is fixedly installed on the side of the triangular column (46) away from the foaming table (1), a stirring rod (413) with a limit plate (414) is fixedly installed on the end of the triangular column (46) away from the baffle (49), a stirring disk (411) is fixedly installed on the stirring rod (413), and a double-headed motor (410) is fixedly installed between the first barrel (7) and the second barrel (8).

2. The foaming equipment for producing direct-buried polyurethane thermal insulation pipe according to claim 1 is characterized in that: A mixing rod (415) with a mixing plate (416) is rotatably mounted in the mixing barrel (3); one output end of the double-headed motor (410) slides through the mounting frame (2) and is fixedly mounted on the mixing rod (415); and the other output end of the double-headed motor (410) slides through the connecting plate (41) and is fixedly mounted on the cam (43).

3. The foaming equipment for producing direct-buried polyurethane thermal insulation pipe according to claim 1 is characterized in that: Two temperature controllers (412) are respectively installed on both sides of the mounting frame (2); heating wires are installed in the first barrel (7) and the second barrel (8); the temperature controller (412) is electrically connected to the heating wires; and the limit plate (414) is fixedly installed at a position where the stirring rod (413) is away from the mounting frame (2).

4. The foaming equipment for producing direct-buried polyurethane thermal insulation pipe according to claim 1 is characterized in that: The baffle (49) is fixedly mounted on a side of the triangular column (46) away from the extrusion block (44); a guide rod (47) is slidably installed on the baffle (49); the first spring (48) is nested on the outer surface of the guide rod (47); a U-shaped groove is formed at one end of the extrusion block (44) away from the moving frame (42), and the guide rod (47) is slidably installed in the U-shaped groove.

5. The foaming equipment for producing direct-buried polyurethane thermal insulation pipe according to claim 4 is characterized in that: The balance bar (45) is slidably mounted on a fixed plate, and the fixed plate is fixedly mounted on the first barrel (7) and the second barrel (8) respectively. There are two extrusion blocks (44) and they are fixedly mounted on both sides of the moving frame (42) close to the first barrel (7) and the second barrel (8) respectively.

6. The foaming equipment for producing direct-buried polyurethane thermal insulation pipe according to claim 1 is characterized by: The mixing barrel (3) is provided with a plugging assembly (5), the plugging assembly (5) comprising a retractable fixed block (51) fixedly mounted on the mixing barrel (3), a reciprocating groove (52) being provided on a side of the fixed block (51) away from the mixing barrel (3), a reciprocating screw (53) with a reciprocating block (54) being rotatably mounted in the reciprocating groove (52), a first motor (57) being fixedly mounted on one end of the fixed block (51) away from the mounting frame (2), and a material discharge push plate (510) being rotatably mounted on a side of the reciprocating groove (52) away from the first motor (57).

7. A foaming device for producing direct-buried polyurethane thermal insulation pipe according to claim 6, characterized in that: A placement plate (58) with a material discharge hole (59) is rotatably mounted on one end of the reciprocating block (54) close to the material discharge push plate (510); a material discharge groove (511) is provided on the top surface of the placement plate (58); an extrusion plate (512) is slidably mounted in the material discharge groove (511); sliding grooves (515) are provided on the inner walls on both sides of the material discharge groove (511); a slider (513) is slidably mounted in the sliding groove (515); and a second spring (514) is fixedly mounted on the side of the extrusion plate (512) away from the material discharge hole (59).

8. The foaming equipment for producing direct-buried polyurethane thermal insulation pipe according to claim 7 is characterized by: One end of the slider (513) close to the second spring (514) is fixedly mounted on the extrusion plate (512), and one end of the second spring (514) away from the extrusion plate (512) is fixedly mounted on the inner wall of the discharge groove (511) close to the reciprocating block (54). Rectangular through holes (55) are provided on the inner walls on both sides of the reciprocating groove (52), and a limit block (56) is slidably installed in the rectangular through hole (55).

9. The foaming equipment for producing direct-buried polyurethane thermal insulation pipe according to claim 1 is characterized by: The foaming table (1) is provided with a preheating assembly (6), a transport groove (61) and a foaming groove (65) are provided on a side of the foaming table (1) close to the injection gun (9), a preheating fan (69) is fixedly installed at one end of the foaming table (1), a transport belt (62) is rotatably installed at a position of the foaming table (1) away from one end of the preheating fan (69), and a second motor (63) is fixedly installed on a side of the foaming table (1) close to the foaming groove (65).

10. A foaming device for producing direct-buried polyurethane thermal insulation pipe according to claim 9, characterized in that: The foaming table (1) is provided with a storage groove (68) on a side close to the mounting frame (2); a first electric telescopic rod (66) is fixedly installed on a position of the mounting frame (2) close to the storage groove (68); a pushing plate (67) is fixedly installed on a side of the first electric telescopic rod (66) away from the mounting frame (2); and a positioning groove (64) is provided on a position of the transport groove (61) corresponding to the injection gun (9).

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