A device for injecting thermal insulation material into thermal insulation pipes

Abstract

The present invention belongs to the field of pipe insulation technology, specifically a device for injecting insulation material into an insulated pipe, comprising a base, a U-shaped carrier plate, an outer tube positioning mechanism, an inner tube positioning mechanism, and an anti-sinking upward stirring mechanism. The U-shaped carrier plate is mounted on the upper wall of the base, the outer tube positioning mechanism is mounted on the U-shaped carrier plate, the inner tube positioning mechanism is mounted on the upper wall of the base on one side of the U-shaped carrier plate, and the anti-sinking upward stirring mechanism is mounted on the inner tube positioning mechanism. The present invention provides a device for injecting insulation material into an insulated pipe, which can generate an upward swirling flow within the poured insulation material, thereby evenly distributing heavier particles and components deposited at the bottom to the outside of the pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline insulation, and in particular relates to a device for injecting insulation material into an insulation pipeline. Background Art

[0002] The injection of thermal insulation materials for insulated pipes is an important part of pipe insulation construction. Commonly used insulation materials include polyurethane, rock wool, glass wool, etc. For foaming insulation materials such as polyurethane, on-site foaming or direct injection is usually used for injection. The direct injection method refers to the mixing of foaming slurry directly into the gap between the inner pipe and the outer pipe, filling the entire space through foaming expansion to form an insulation layer.

[0003] The existing insulation material injection device for insulation pipes has the following problems:

[0004] When the existing insulation material injection device for insulated pipes adopts a vertical pouring method, due to the influence of gravity and slurry fluidity, gaps or uneven density will exist inside the poured insulation material, thereby affecting the overall insulation effect and reducing the vertical pouring quality of the insulation material. Therefore, it cannot meet the existing use requirements of the insulation material injection device for insulated pipes. Summary of the Invention

[0005] In response to the above situation, in order to overcome the defects of the existing technology, this solution provides an insulation material injection device for an insulation pipe that can generate an upward vortex inside the cast insulation material, so that the heavier particles and components deposited at the bottom are evenly distributed to the outside of the pipe.

[0006] The technical solutions adopted in this plan are as follows:

[0007] A device for injecting heat-insulating material into a heat-insulating pipe comprises a base and a U-shaped carrier plate, and further comprises an outer cylinder positioning mechanism, an inner cylinder positioning mechanism and an anti-sinking upper stirring mechanism. The U-shaped carrier plate is arranged on the upper wall of the base, and the outer cylinder positioning mechanism is arranged on the U-shaped carrier plate.

[0008] The inner cylinder positioning mechanism includes a guiding mechanism and a fixing mechanism;

[0009] The guide mechanism is provided on the upper wall of one end of the base away from the U-shaped carrier plate, and the fixing mechanism is provided on the end of the guide mechanism away from the base;

[0010] The guide mechanism includes a lifting slide and a sliding frame, wherein the lifting slide is arranged on the upper wall of the end of the base away from the U-shaped carrier plate, and the sliding frame is slidably arranged on the end of the lifting slide away from the base;

[0011] The fixing mechanism includes a fixing ring frame;

[0012] The fixing ring is mounted on a side of the sliding frame away from the lifting slide column;

[0013] The outer cylinder positioning mechanism includes a guide rod and a top pressure plate;

[0014] The guide rods are symmetrically arranged on the upper walls of both ends of the U-shaped carrier plate, and the top pressure plate is slidably arranged on the end of the guide rod away from the U-shaped carrier plate;

[0015] The anti-sinking type upper stirring mechanism includes a stirring mechanism;

[0016] The stirring mechanism is arranged on the side wall of the guide mechanism below the fixing mechanism;

[0017] The stirring mechanism includes a stirring frame, a stirring nut, a rotating ring plate, a hand crank, a stirring sleeve and a spiral blade;

[0018] The stirring frame is slidingly arranged on the outside of the lifting slide column below the sliding frame, the stirring nut is arranged on the outside of the lifting slide column below the stirring frame, the stirring nut is threadedly connected to the lifting slide column, the rotating ring plate is rotatably arranged on the side of the stirring frame away from the lifting slide column, the rotating ring plate is rotatably arranged between the top pressure plate and the fixed ring frame, the hand crank is symmetrically arranged on the upper wall of the rotating ring plate, the stirring sleeve is arranged on the bottom wall of the rotating ring plate, the stirring sleeve is through-arranged, and the spiral blades are respectively arranged on the side wall and inner wall of the stirring sleeve.

[0019] Furthermore, the anti-sinking type upper stirring mechanism also includes a liquid storage mechanism, and the liquid storage mechanism is arranged at the bottom of the outer cylinder positioning mechanism.

[0020] Furthermore, the outer cylinder positioning mechanism also includes a compression spring, an arc block and an annular plate. The compression spring is arranged between the top pressure plate on the outside of the guide rod and the U-shaped carrier plate. The arc block is respectively arranged on the upper wall of the U-shaped carrier plate and the bottom wall of the top pressure plate. The annular plate is arranged on the upper wall of the arc block on the upper wall of the U-shaped carrier plate.

[0021] Furthermore, the liquid storage mechanism includes a liquid storage port, an elastic sheet, a magnetic frame, a pulling rod, a driving electromagnet and a reset spring. Multiple groups of the liquid storage ports are arranged on the inner wall of the annular plate, the elastic sheet is arranged on the inner wall of the liquid storage port, multiple groups of the magnetic frame are arranged on the side of the U-shaped carrier plate close to the annular plate, and the pulling rod is arranged through the inner wall of the magnetic frame.

[0022] Furthermore, the driving electromagnet is arranged on the side of the pulling rod away from the magnetic frame, the side of the pulling rod away from the driving electromagnet is arranged on the bottom wall of the elastic piece, and the reset spring is arranged between the elastic piece outside the pulling rod and the magnetic frame.

[0023] Furthermore, the guide mechanism further includes a limiting nut, which is arranged on the outside of the lifting slide column on both sides of the sliding frame, and the limiting nut is threadedly connected to the lifting slide column.

[0024] Furthermore, the fixing mechanism also includes a fixing port, a fixing bolt and a ring convex plate. The fixing port is arranged on the inner wall of the U-shaped carrier plate, the fixing bolts are symmetrically arranged on both sides of the fixing ring frame, the fixing bolts pass through the inner wall of the fixing ring frame, the fixing bolts are threadedly connected to the fixing ring frame, and the ring convex plate is arranged on the inner wall of the bottom of the fixing port.

[0025] The beneficial effects achieved by adopting the above structure are as follows:

[0026] Compared with the prior art, the present invention adopts a combination of concentric circle double sleeves and upward swirl structure. Through the outer tube positioning mechanism, inner tube positioning mechanism and anti-sinking type upper stirring mechanism, under the mutual cooperation of the guiding mechanism, fixing mechanism, liquid storage mechanism and stirring mechanism, the pouring operation of the thermal insulation material between the outer insulation tube and the pipeline can be completed under the premise of preventing the sedimentation of heavier particles or components in the thermal insulation material, ensuring that the density of the thermal insulation material on the outside of the pipeline after pouring is uniformly distributed, thereby improving the overall thermal insulation performance of the pipeline after pouring, the stirring nut rotates along the lifting slide column to rise to a height that fits the bottom wall of the stirring frame. At this time, the liquid level of the thermal insulation material between the outer insulation tube and the pipeline drops, driving the electromagnet to cut off the power and demagnetize, and the reset spring is reset and shortened, and the elastic sheet is reset by the pull rod. The thermal insulation material inside the outward protruding elastic sheet flows back into between the outer insulation tube and the pipeline, and the thermal insulation material liquid level between the outer insulation tube and the pipeline rises again, thereby completing the pouring operation of the pipeline insulation material. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0028] Figure 2 This is a bottom-up perspective view of this scheme;

[0029] Figure 3 This is a schematic diagram of the combined structure of the U-shaped carrier plate and the top pressure plate of this solution;

[0030] Figure 4 This is a schematic diagram of the structure of the guiding mechanism of this scheme;

[0031] Figure 5 This is a schematic diagram of the structure of the stirring sleeve of this scheme;

[0032] Figure 6 This is the main view of this scheme;

[0033] Figure 7 This is a side view of the scheme;

[0034] Figure 8 This is a top view of the scheme;

[0035] Figure 9 for Figure 6 AA section view;

[0036] Figure 10 for Figure 1 A magnified structural view of part I;

[0037] Figure 11 for Figure 2 A magnified structural view of Part II.

[0038] Among them, 1. base, 2. U-shaped carrier plate, 3. outer cylinder positioning mechanism, 4. guide rod, 5. compression spring, 6. top pressure plate, 7. arc block, 8. annular plate, 9. inner cylinder positioning mechanism, 10. guide mechanism, 11. lifting slide column, 12. sliding frame, 13. limit nut, 14. fixing mechanism, 15. fixed ring frame, 16. fixing port, 17. fixing bolt, 18. ring convex plate, 19. anti-sinking type upper stirring mechanism, 20. liquid storage mechanism, 21. liquid storage port, 22. elastic sheet, 23. magnetic frame, 24. pulling rod, 25. driving electromagnet, 26. reset spring, 27. stirring mechanism, 28. stirring frame, 29. stirring nut, 30. rotating ring plate, 31. hand crank, 32. stirring sleeve, 33. spiral blade.

[0039] The accompanying drawings are used to provide further understanding of the present solution and constitute a part of the specification. Together with the embodiments of the present solution, they are used to explain the present solution and do not constitute a limitation to the present solution. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of this solution will be clearly and completely described below in conjunction with the drawings in the embodiments of this solution. Obviously, the described embodiments are only part of the embodiments of this solution, not all of the embodiments; based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this solution.

[0041] In the description of this solution, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this solution.

[0042] like Figures 1-11As shown, the present invention proposes an insulation material injection device for an insulation pipe, comprising a base 1, a U-shaped carrier plate 2, an outer cylinder positioning mechanism 3, an inner cylinder positioning mechanism 9 and an anti-sinking upper stirring mechanism 19, wherein the U-shaped carrier plate 2 is arranged on the upper wall of the base 1, the outer cylinder positioning mechanism 3 is arranged on the U-shaped carrier plate 2, the inner cylinder positioning mechanism 9 is arranged on the upper wall of the base 1 on one side of the U-shaped carrier plate 2, the anti-sinking upper stirring mechanism 19 is arranged on the inner cylinder positioning mechanism 9, the inner cylinder positioning mechanism 9 comprises a guide mechanism 10 and a fixing mechanism 14, the guide mechanism 10 is arranged on the upper wall of one end of the base 1 away from the U-shaped carrier plate 2, the fixing mechanism 14 is arranged on the end of the guide mechanism 10 away from the base 1, the anti-sinking upper stirring mechanism 19 comprises a liquid storage mechanism 20 and a stirring mechanism 27, the liquid storage mechanism 20 is arranged at the bottom of the outer cylinder positioning mechanism 3, and the stirring mechanism 27 is arranged on the side wall of the guide mechanism 10 below the fixing mechanism 14.

[0043] The outer cylinder positioning mechanism 3 includes a guide rod 4, a compression spring 5, a top pressure plate 6, an arc block 7 and an annular plate 8. The guide rod 4 is symmetrically arranged on the upper walls at both ends of the U-shaped carrier 2. The top pressure plate 6 is slidingly arranged on the end of the guide rod 4 away from the U-shaped carrier 2. The compression spring 5 is arranged between the top pressure plate 6 on the outside of the guide rod 4 and the U-shaped carrier 2. The arc blocks 7 are respectively arranged on the upper wall of the U-shaped carrier 2 and the bottom wall of the top pressure plate 6. The annular plate 8 is arranged on the upper wall of the arc block 7 on the upper wall of the U-shaped carrier 2.

[0044] The guide mechanism 10 includes a lifting slide 11, a sliding frame 12 and a limiting nut 13. The lifting slide 11 is provided on the upper wall of the end of the base 1 away from the U-shaped carrier 2, and the sliding frame 12 is slidably provided on the end of the lifting slide 11 away from the base 1. The limiting nut 13 is provided on the outside of the lifting slide 11 on both sides of the sliding frame 12, and the limiting nut 13 is threadedly connected to the lifting slide 11; the fixing mechanism 14 includes a fixing ring frame 15, a fixing port 16, a fixing bolt 17 and a ring convex plate 18. The fixing ring frame 15 is provided on the side of the sliding frame 12 away from the lifting slide 11, the fixing port 16 is provided on the inner wall of the U-shaped carrier 2, the fixing bolts 17 are symmetrically provided on both sides of the fixing ring frame 15, the fixing bolts 17 are provided through the inner wall of the fixing ring frame 15, the fixing bolts 17 are threadedly connected to the fixing ring frame 15, and the ring convex plate 18 is provided on the bottom inner wall of the fixing port 16.

[0045] The liquid storage mechanism 20 includes a liquid storage port 21, an elastic sheet 22, a magnetic frame 23, a pulling rod 24, a driving electromagnet 25 and a reset spring 26. Multiple groups of the liquid storage ports 21 are arranged on the inner wall of the annular plate 8, the elastic sheet 22 is arranged on the inner wall of the liquid storage port 21, and multiple groups of the magnetic frame 23 are arranged on the side of the U-shaped carrier 2 close to the annular plate 8. The pulling rod 24 is arranged through the inner wall of the magnetic frame 23. The driving electromagnet 25 is arranged on the side of the pulling rod 24 away from the magnetic frame 23. The side of the pulling rod 24 away from the driving electromagnet 25 is arranged on the bottom wall of the elastic sheet 22. The reset spring 26 is arranged between the elastic sheet 22 on the outside of the pulling rod 24 and the magnetic frame 23; the stirring mechanism 27 includes a stirring frame 28, a stirring screw The nut 29, the rotating ring plate 30, the hand crank 31, the stirring sleeve 32 and the spiral blade 33, the stirring frame 28 is slidingly arranged on the outside of the lifting slide 11 below the sliding frame 12, the stirring nut 29 is arranged on the outside of the lifting slide 11 below the stirring frame 28, the stirring nut 29 is threadedly connected to the lifting slide 11, the rotating ring plate 30 is rotatably arranged on the side of the stirring frame 28 away from the lifting slide 11, the rotating ring plate 30 is rotatably arranged between the top pressure plate 6 and the fixed ring frame 15, the hand crank 31 is symmetrically arranged on the upper wall of the rotating ring plate 30, the stirring sleeve 32 is arranged on the bottom wall of the rotating ring plate 30, the stirring sleeve 32 is through-arranged, and the spiral blades 33 are respectively arranged on the side wall and inner wall of the stirring sleeve 32.

[0046] When in use, in the initial state, the stirring frame 28 is placed on the lifting slide column 11 close to one end of the sliding frame 12, and the stirring frame 28 drives the stirring sleeve 32 to be located above the top pressure plate 6 and the fixed ring frame 15. The top pressure plate 6 is manually pulled, and the top pressure plate 6 is deformed by the compression spring 5 and slides along the guide rod 4 to rise in height. The top pressure plate 6 drives the arc block 7 away from the annular plate 8, and the distance between the arc block 7 and the annular plate 8 increases, and the outer insulation pipe is placed between the arc block 7 and the annular plate 8. Then, the top pressure plate 6 is released, and the top pressure plate 6 is deformed and reset by the compression spring 5 and slides along the guide rod 4 to drive the arc block 7 to move to the side close to the annular plate 8, and the outer insulation pipe is fixed between the arc block 7 and the annular plate 8;

[0047] The pipe to be insulated passes through the fixed port 16 and is placed on the upper wall of the annular convex plate 18. The outer diameter of the pipe is consistent with the inner diameter of the fixed port 16. Rotate the limiting nut 13, and the limiting nut 13 at the bottom of the sliding frame 12 rotates and descends along the lifting slide column 11. The sliding frame 12 slides along the lifting slide column 11 to drive the fixed ring frame 15 to be sleeved on the outside of the pipe. The fixed ring frame 15 is horizontally arranged with the top pressure plate 6. Rotate the limiting nut 13 above the sliding frame 12, and the limiting nut 13 rotates and descends along the lifting slide column 11 to fit the upper wall of the sliding frame 12. The sliding frame 12 is fixed to the outside of the lifting slide column 11, and the fixing bolt 17 is rotated. The fixing bolt 17 rotates along the inner wall of the fixed ring frame 15 and fits the side wall of the pipeline. The pipeline is fixed to the upper wall of the ring convex plate 18. At this time, the outer insulation pipe is sleeved on the outside of the pipeline. The outer insulation pipe and the pipeline are concentrically arranged. There is a gap between the outer insulation pipe and the pipeline for pouring insulation material. The insulation material is poured into the gap between the outer insulation pipe and the pipeline. The poured insulation material is level with the end face of the outer insulation pipe, completing the direct pouring operation of the insulation pipeline.

[0048] During the pouring process, the insulation material is affected by gravity, and the heavier particles or components will gradually settle downward, while the lighter particles or components will float on top, resulting in a difference in density between the upper and bottom parts, affecting the overall insulation effect of the insulation pipe. When the insulation material after pouring needs to be uniformly stirred, the elastic sheet 22 is flush with the upper wall of the annular plate 8, the distance between the driving electromagnet 25 and the magnetic frame 23 is the minimum, the driving electromagnet 25 is energized to generate magnetism, the driving electromagnet 25 and the magnetic frame 23 are set with the same pole, and the driving electromagnet The distance between the body 25 and the magnetic frame 23 increases. Under the action of the repulsive force, the electromagnet 25 drives the pulling rod 24 to pull the elastic sheet 22 to deform. After the elastic sheet 22 is deformed, the return spring 26 is compressed. After the elastic sheet 22 is deformed, it bulges outward to expand the space between the outer insulation pipe and the pipeline. The insulation material between the outer insulation pipe and the pipeline enters the outward-bulging elastic sheet 22. The liquid level of the insulation material between the outer insulation pipe and the pipeline decreases, making it easier for the stirring sleeve 32 to drive the spiral blade 33 into the insulation material without overflowing.

[0049] The stirring nut 29 is manually rotated, and the stirring nut 29 is rotated and lowered along the lifting slide post 11, and the stirring frame 28 slides down along the lifting slide post 11 and fits into the stirring nut 29. The stirring frame 28 drives the stirring sleeve 32 to be inserted into the gap between the top pressure plate 6 and the fixed ring frame 15 through the rotating ring plate 30, and the stirring sleeve 32 drives the spiral blade 33 to enter the insulation material between the outer insulation pipe and the pipeline. The insulation material level between the outer insulation pipe and the pipeline rises. The rotating ring plate 30 is rotated by the hand crank 31, and the rotating ring plate 30 drives the spiral blade 33 to rotate in the insulation material through the stirring sleeve 32. The spiral blade 33 stirs a channel for the liquid to move upward in the insulation material, thereby making it easier to rotate the heavier particles or components deposited in the bottom space of the outer insulation pipe and the pipeline to the middle or top of the outer insulation pipe and the pipeline, reducing the probability of unevenness in the insulation material after pouring and ensuring the insulation performance of the pipeline after pouring.

[0050] After the heat-insulating material is stirred, the stirring frame 28 is pulled, and the stirring frame 28 drives the stirring sleeve 32 away from the top pressure plate 6 and the fixed ring frame 15 by rotating the ring plate 30, and the stirring sleeve 32 drives the spiral blade 33 to be drawn out of the heat-insulating material between the outer heat-insulating pipe and the pipeline, and the stirring nut 29 is rotated. The stirring nut 29 rotates along the lifting slide column 11 to rise to a height close to the bottom wall of the stirring frame 28. At this time, the heat-insulating material level between the outer heat-insulating pipe and the pipeline drops, driving the electromagnet 25 to be powered off and demagnetized. The reset spring 26 resets and extends, driving the elastic sheet 22 to return to a position flush with the upper wall of the annular plate 8. The heat-insulating material inside the outwardly protruding elastic sheet 22 flows back into the space between the outer heat-insulating pipe and the pipeline, and the heat-insulating material level between the outer heat-insulating pipe and the pipeline rises again, thereby completing the pouring operation of the pipeline heat-insulating material.

[0051] After the insulation material cools down, the limit nut 13 above the sliding frame 12 is rotated, and the limit nut 13 rotates along the lifting slide column 11 away from the sliding frame 12, and the fixing bolt 17 is rotated. The fixing bolt 17 rotates along the inner wall of the fixed ring frame 15 away from the side wall of the pipe, and the sliding frame 12 is lifted. The sliding frame 12 slides along the lifting slide column 11 to drive the fixed ring frame 15 to rise in height, and the fixed ring frame 15 is away from the outside of the pipe, pulling the top pressure plate 6. The top pressure plate 6 is deformed by the compression spring 5 and slides and rises along the guide rod 4, and the outer insulation tube and the pipe connected together by the insulation material are taken out of the upper wall of the U-shaped carrier plate 2, completing the injection operation of the insulation material into the insulated pipe; repeat the above operation when using it next time.

[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0053] The above description of the present solution and its implementation methods is non-limiting. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present solution, designs a similar structure and embodiment without creatively designing, they shall fall within the scope of protection of the present solution.

Claims

1. A device for injecting heat-insulating material into a heat-insulating pipe, comprising a base (1) and a U-shaped carrier plate (2), characterized in that: It also includes an outer cylinder positioning mechanism (3), an inner cylinder positioning mechanism (9) and an anti-sinking upper stirring mechanism (19), wherein the U-shaped carrier plate (2) is arranged on the upper wall of the base (1), and the outer cylinder positioning mechanism (3) is arranged on the U-shaped carrier plate (2); The inner cylinder positioning mechanism (9) includes a guiding mechanism (10) and a fixing mechanism (14); The guide mechanism (10) is provided on an upper wall of one end of the base (1) away from the U-shaped carrier plate (2), and the fixing mechanism (14) is provided on one end of the guide mechanism (10) away from the base (1); The guide mechanism (10) comprises a lifting slide (11) and a sliding frame (12), wherein the lifting slide (11) is arranged on an upper wall of an end of the base (1) away from the U-shaped carrier plate (2), and the sliding frame (12) is slidably arranged on an end of the lifting slide (11) away from the base (1); The fixing mechanism (14) includes a fixing ring frame (15); The fixed ring frame (15) is arranged on a side of the sliding frame (12) away from the lifting slide column (11); The outer cylinder positioning mechanism (3) comprises a guide rod (4) and a top pressure plate (6); The guide rods (4) are symmetrically arranged on the upper walls of both ends of the U-shaped carrier plate (2), and the top pressure plate (6) is slidably arranged on the end of the guide rods (4) away from the U-shaped carrier plate (2); The anti-sinking type upper stirring mechanism (19) includes a stirring mechanism (27); The stirring mechanism (27) is arranged on the side wall of the guide mechanism (10) below the fixing mechanism (14); The stirring mechanism (27) includes a stirring frame (28), a stirring nut (29), a rotating ring plate (30), a hand crank (31), a stirring sleeve (32) and a spiral blade (33); The stirring frame (28) is slidably arranged on the outside of the lifting slide column (11) below the sliding frame (12), the stirring nut (29) is arranged on the outside of the lifting slide column (11) below the stirring frame (28), and the stirring nut (29) is threadedly connected to the lifting slide column (11). The rotating ring plate (30) is rotatably arranged on the side of the stirring frame (28) away from the lifting slide column (11), and the rotating ring plate (30) is rotatably arranged between the top pressure plate (6) and the fixed ring frame (15). The hand crank (31) is symmetrically arranged on the upper wall of the rotating ring plate (30), and the stirring sleeve (32) is arranged on the bottom wall of the rotating ring plate (30). The stirring sleeve (32) is through-arranged, and the spiral blades (33) are respectively arranged on the side wall and the inner wall of the stirring sleeve (32).

2. The device for injecting heat-insulating material into heat-insulating pipes according to claim 1, characterized in that: The anti-sinking upper stirring mechanism (19) further comprises a liquid storage mechanism (20), and the liquid storage mechanism (20) is arranged at the bottom of the outer cylinder positioning mechanism (3).

3. The device for injecting heat-insulating material into heat-insulating pipes according to claim 2, characterized in that: The outer cylinder positioning mechanism (3) further comprises a compression spring (5), an arc block (7) and an annular plate (8), wherein the compression spring (5) is arranged between the top pressure plate (6) outside the guide rod (4) and the U-shaped carrier plate (2), the arc block (7) is respectively arranged on the upper wall of the U-shaped carrier plate (2) and the bottom wall of the top pressure plate (6), and the annular plate (8) is arranged on the upper wall of the arc block (7) on the upper wall of the U-shaped carrier plate (2).

4. The device for injecting heat-insulating material into heat-insulating pipes according to claim 3, characterized in that: The liquid storage mechanism (20) includes a liquid storage port (21), an elastic sheet (22), a magnetic frame (23), a pulling rod (24), a driving electromagnet (25) and a reset spring (26), wherein a plurality of groups of the liquid storage ports (21) are arranged on the inner wall of the annular plate (8), the elastic sheet (22) is arranged on the inner wall of the liquid storage port (21), a plurality of groups of the magnetic frame (23) are arranged on one side of the U-shaped carrier plate (2) close to the annular plate (8), and the pulling rod (24) is arranged through the inner wall of the magnetic frame (23).

5. The device for injecting heat-insulating material into heat-insulating pipes according to claim 4, characterized in that: The driving electromagnet (25) is arranged on a side of the pulling rod (24) away from the magnetic frame (23), and the side of the pulling rod (24) away from the driving electromagnet (25) is arranged on the bottom wall of the elastic sheet (22). The return spring (26) is arranged between the elastic sheet (22) and the magnetic frame (23) outside the pulling rod (24).

6. The device for injecting heat-insulating material into heat-insulating pipes according to claim 1, characterized in that: The guide mechanism (10) further includes a limiting nut (13), which is arranged on the outside of the lifting slide column (11) on both sides of the sliding frame (12), and the limiting nut (13) is threadedly connected to the lifting slide column (11).

7. The device for injecting heat-insulating material into heat-insulating pipes according to claim 1, characterized in that: The fixing mechanism (14) further comprises a fixing opening (16), a fixing bolt (17) and a ring convex plate (18), wherein the fixing opening (16) is provided on the inner wall of the U-shaped carrier plate (2), the fixing bolts (17) are symmetrically provided on both sides of the fixing ring frame (15), the fixing bolts (17) are provided through the inner wall of the fixing ring frame (15), the fixing bolts (17) are threadedly connected to the fixing ring frame (15), and the ring convex plate (18) is provided on the inner wall of the bottom of the fixing opening (16).

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