Heat-preservation anti-blocking single screw pump

Abstract

The application discloses a heat preservation anti-blocking single screw pump and relates to the technical field of single screw pumps. The single screw pump body is provided with a suction cavity, and the suction cavity is provided with an anti-blocking assembly. The heat preservation jacket is provided with multiple heat preservation jackets, the multiple heat preservation jackets are sequentially arranged on the outside of the single screw pump body along the conveying direction of the single screw pump body, the heat preservation jackets are connected with each other, the outer circumferential wall of the heat preservation jacket is provided with a medium inlet and a medium outlet in the circumferential direction, and the medium inlet is provided with a Y-shaped three-way ball valve. Multiple medium annular pipes are arranged in parallel and at intervals in each heat preservation jacket, the medium annular pipe is movably arranged on the outside of the single screw pump body, the end of the medium annular pipe close to the Y-shaped three-way ball valve is connected with the Y-shaped three-way ball valve through a connecting pipeline one, and the end of the medium annular pipe close to the medium outlet is connected with the medium outlet through a connecting pipeline two. The application has the advantages of avoiding material accumulation and caking during conveying and being beneficial to keeping the temperature uniform.

Description

Technical Field

[0001] This invention relates to the field of single screw pump technology, and specifically to a heat-insulated and anti-clogging single screw pump. Background Technology

[0002] In industrial applications such as chemical, food, and new energy slurry conveying, single-screw pumps have become one of the core equipment for conveying solid-liquid mixtures due to their adaptability to high-viscosity and particulate media. However, some existing single-screw pumps have the following drawbacks in actual operation: high-viscosity, easily crystallizing materials are prone to bridging and accumulation at the feed position of the suction chamber, and the inner wall is prone to sticking and clumping. Conventional grid-type anti-clogging structures can only intercept large particles and cannot break up the stuck material at the feed inlet from the root. After long-term operation, they are prone to feeding difficulties and pump body idling failures, which greatly increases the frequency of equipment maintenance. The insulation structure of some existing single-screw pumps is mostly a fixed jacket, which not only cannot adapt to the flexible assembly requirements of pump bodies of different lengths, but also generally has the problems of large heat exchange dead zones and single media flow path. It is impossible to achieve uniform constant temperature control throughout the pump body, and it is also difficult to quickly switch heat exchange modes according to operating conditions, which makes the material prone to solidification and crystallization during pumping. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a heat-insulating and anti-clogging single screw pump, which has the advantages of preventing material accumulation and clumping during material transportation, and also helps to maintain uniform temperature.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a heat-insulating and anti-clogging single screw pump, comprising: The pump body of the single screw pump is provided with a suction chamber, and an anti-clogging component is provided in the suction chamber; The insulation jacket is provided in multiple ways. Multiple insulation jackets are sequentially fitted on the outside of the single screw pump body along the conveying direction of the single screw pump body. The insulation jackets are connected to each other. The outer peripheral wall of the insulation jacket is provided with a medium inlet and a medium outlet along the circumferential direction. A Y-type three-way ball valve is provided on the medium inlet. Multiple medium loops are arranged in parallel at intervals within each insulation jacket. The medium loops are movably sleeved on the outside of the single screw pump body. The end of the medium loop near the Y-type three-way ball valve is connected to the Y-type three-way ball valve through connecting pipe one, and the end of the medium loop near the medium outlet is connected to the medium outlet through connecting pipe two.

[0005] Preferably, the anti-clogging component includes: The hopper is a hollow cylindrical structure. It is horizontally installed in the suction chamber. The hopper has an inlet and an outlet arranged in sequence along the circumferential direction on its outer peripheral wall, and the inlet and outlet are distributed from top to bottom. The drive motor is located on one of the circular end faces of the hopper. The rotating rod is coaxially mounted on the output shaft of the drive motor, and the rotating rod is rotatably mounted on another circular end face of the hopper away from the drive motor end; The mixing discs are arranged in multiple ways, with the discs spaced apart along the length of the rotating rod. Multiple mixing rods are evenly distributed along the circumference of the outer wall of the mixing discs. The drive motor drives the mixing discs and mixing rods to rotate, which can prevent the material from accumulating in the hopper.

[0006] Preferably, the end of the stirring rod away from the stirring plate is in contact with the inner peripheral wall of the hopper, and the drive motor drives the stirring rod to rotate, which can prevent the material from adhering and accumulating on the inner wall of the hopper.

[0007] Preferably, the hopper is further provided with an anti-blocking push rod assembly, which includes: The outer peripheral wall of the seat is connected to the inner wall of the hopper by multiple connecting rods, and the seat is coaxially and movably sleeved on the outside of the rotating rod. A push cylinder is vertically mounted on the seat cylinder, and a push plate is horizontally mounted on the piston rod of the push cylinder. The position of the push plate corresponds to the position of the feed inlet. The push rods are arranged in multiples, with each push rod vertically spaced on the push plate. The push rods are moved by the cylinder to extend and retract, which can prevent material from accumulating at the feed inlet.

[0008] Preferably, the length direction of the push rod is the same as the length direction of the rotating rod, and the push rod is located between the two stirring discs near the seat cylinder to prevent interference between the push rod and the stirring discs and stirring rod when the drive motor drives them to rotate.

[0009] Preferably, the two adjacent insulation jackets are connected by a flange to facilitate the installation and disassembly of the insulation jackets.

[0010] Preferably, the Y-type three-way ball valve is located inside the insulation jacket. The inlet of the Y-type three-way ball valve is movably connected to the medium inlet. One outlet of the Y-type three-way ball valve is connected to the first connecting pipe, and the other outlet of the Y-type three-way ball valve is located outside the medium ring pipe and is connected to the inside of the insulation jacket. The second connecting pipe is movably connected to the medium outlet, so that the flow path of the medium can be changed according to different usage needs.

[0011] Preferably, a first sliding groove is horizontally provided inside the insulation jacket near the medium inlet end, and a first sliding block adapted to the first sliding groove is provided on the outer wall of the first connecting pipe. The first sliding block is slidably disposed in the first sliding groove. A second sliding groove is horizontally provided inside the insulation jacket near the medium outlet end, and a second sliding block adapted to the second sliding groove is provided on the outer wall of the second connecting pipe. The second sliding block is slidably disposed in the second sliding groove, which facilitates the installation and disassembly of the first connecting pipe and the second connecting pipe.

[0012] Preferably, the single screw pump body is provided with a medium insulation box, and a circulation pump is provided inside the medium insulation box. The outlet and inlet of the circulation pump are connected to the medium inlet and the medium outlet, respectively, so as to facilitate the circulation of the medium.

[0013] Preferably, the insulation jacket is coaxial with the single screw pump body, and the sum of the lengths of the multiple insulation jackets along the axial direction is greater than the length of the single screw pump body in the conveying direction, which can ensure that the material inside the single screw pump body is cooled or kept warm.

[0014] The beneficial effects of the present invention are as follows: 1. The anti-blocking component avoids the accumulation and clumping of materials in the hopper, ensuring smooth feeding.

[0015] 2. The single screw pump body has a multi-section split insulation jacket on the outside, and multiple media ring pipes are arranged in parallel and spaced inside the insulation jacket. This can keep the material at a uniform temperature during pumping and avoid problems such as solidification and crystallization caused by abnormal temperature.

[0016] 3. The two adjacent insulation jackets adopt a flange splicing split structure; and the sliding and detachable assembly between slider one and slide groove one, and slider two and slide groove two, not only realizes quick disassembly, but also facilitates cleaning and maintenance of the inside of the insulation jacket. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a heat-insulating and anti-clogging single screw pump provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram showing the positions of the inlet and outlet of a heat-insulating and anti-clogging single screw pump provided in an embodiment of the present invention.

[0020] Figure 3This is a schematic diagram of the hopper location for an insulated and anti-clogging single screw pump provided in an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the medium inlet position of a heat-insulating and anti-clogging single screw pump provided in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the anti-clogging component structure of a heat-insulating and anti-clogging single screw pump provided in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the mixing disc and mixing rod structure of a heat-insulating and anti-clogging single screw pump provided in an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the anti-clogging push rod assembly structure of an insulated and anti-clogging single screw pump provided in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the medium ring pipe position of a heat-insulating and anti-clogging single screw pump provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached drawings: 1. Single screw pump body; 11. Suction chamber; 2. Anti-clogging component; 21. Hopper; 211. Feed inlet; 212. Discharge outlet; 22. Drive motor; 23. Rotating rod; 24. Agitator; 241. Agitator rod; 25. Anti-clogging push rod assembly; 251. Seat cylinder; 252. Connecting rod; 253. Push cylinder; 254. Push plate; 255. Push rod; 3. Insulation jacket; 31. Medium inlet; 32. Medium outlet; 33. Y-type three-way ball valve; 4. Medium ring pipe; 5. Connecting pipe one; 6. Connecting pipe two. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1 like Figure 1 , Figure 4 , Figure 8As shown, the present invention provides a heat-insulating and anti-clogging single screw pump, including a single screw pump body 1, a suction chamber 11 provided on the single screw pump body 1, and an anti-clogging component 2 provided in the suction chamber 11; multiple heat-insulating jackets 3 are provided, and the multiple heat-insulating jackets 3 are sequentially sleeved on the outside of the single screw pump body 1 along the conveying direction of the single screw pump body 1, and the heat-insulating jackets 3 are connected to each other. A medium inlet 31 and a medium outlet 32 ​​are provided on the outer peripheral wall of the heat-insulating jacket 3 in the circumferential direction, and a Y-type three-way ball valve 33 is provided on the medium inlet 31; multiple medium ring pipes 4 are arranged in parallel and spaced in each heat-insulating jacket 3, and the medium ring pipes 4 are movably sleeved on the outside of the single screw pump body 1. The end of the medium ring pipe 4 near the Y-type three-way ball valve 33 is connected to the Y-type three-way ball valve 33 through a connecting pipe 5, and the end of the medium ring pipe 4 near the medium outlet 32 ​​is connected to the medium outlet 32 ​​through a connecting pipe 6.

[0029] First, fix the single screw pump body 1 on the mounting base. Then, install multiple insulation jackets 3 sequentially along the conveying direction of the single screw pump body 1. After the material is added through the suction chamber 11, it enters the single screw pump body 1 (the anti-blocking component 2 installed in the suction chamber 11 can prevent blockage when the material is added into the suction chamber 11). The material is finally pumped by the action of the single screw pump body 1 (the single screw pump body 1 is existing technology, so it will not be described in detail here). When operating under high temperature conditions, cold medium (or hot medium) can be added to each medium ring pipe 4 through the Y-type three-way ball valve 33 on the medium inlet 31 and the connecting pipe 1 5. The cold medium (or hot medium) can finally be discharged through the connecting pipe 2 6 and the medium outlet 32, which can keep the temperature of the material conveyed in the single screw pump body 1 stable, thereby achieving a good conveying effect.

[0030] Example 2 Based on Example 1, such as Figures 1 to 6 , Figure 8 As shown, the anti-clogging component 2 includes a hopper 21, which is a hollow cylindrical structure. The hopper 21 is horizontally arranged in the suction chamber 11. The outer peripheral wall of the hopper 21 has an inlet 211 and an outlet 212 arranged sequentially along the circumferential direction, and the inlet 211 and outlet 212 are distributed from top to bottom. The drive motor 22 is arranged on one of the circular end faces of the hopper 21. The rotating rod 23 is coaxially arranged on the output shaft of the drive motor 22, and the end of the rotating rod 23 away from the drive motor 22 is rotatably arranged on the other circular end face of the hopper 21. Multiple stirring discs 24 are arranged, and the multiple stirring discs 24 are spaced apart along the length direction of the rotating rod 23. Multiple stirring rods 241 are evenly distributed along the circumferential direction on the outer peripheral wall of the stirring disc 24. The drive motor 22 drives the stirring discs 24 and stirring rods 241 to rotate. The end of the stirring rod 241 away from the stirring disc 24 contacts the inner peripheral wall of the hopper 21, and the drive motor 22 drives the stirring rod 241 to rotate.

[0031] First, fix the single screw pump body 1 on the mounting base, and then install multiple insulation jackets 3 sequentially along the conveying direction of the single screw pump body 1. Adjust the Y-type three-way ball valve 33 to allow the cold medium (or hot medium) to be added into each medium ring pipe 4. After the material is added through the suction chamber 11, it enters the single screw pump body 1, and the material is pumped under the action of the single screw pump body 1. Start the drive motor 22 to drive the rotating rod 23, stirring disc 24, and stirring rod 241 to rotate synchronously, while simultaneously adding the material into the hopper 21 through the suction chamber 11. At this time, the stirring rod 241... 41 Under the action of the drive motor 22, the material added to the hopper 21 can be dispersed. At the same time, when the stirring rod 241 rotates, the end of the stirring rod 241 away from the stirring plate 24 can always be in contact with the inner peripheral wall of the wiping hopper 21, so as to avoid the adhesion, accumulation and agglomeration of high viscosity or particulate materials on the inner peripheral wall of the wiping hopper 21, and completely eliminate the risk of material blockage on the inner peripheral wall of the wiping hopper 21. The material that has been fully dispersed by the stirring rod 241 flows out from the discharge port 212 of the hopper 21 and enters the pump body 1 of the single screw pump, and completes stable pumping under the action of the pump body 1.

[0032] The Y-type three-way ball valve 33 can be switched according to needs to send cold (or hot) medium into the medium ring pipe 4 through the medium inlet 31 and connecting pipe 1 5. After the cold (or hot) medium completes heat exchange in the medium ring pipe 4, it is discharged from the medium outlet 32 ​​through the connecting pipe 2 6. The medium ring pipes 4 in all the insulation jackets 3 can simultaneously and uniformly exchange heat on the single screw pump body 1, so that the material conveyed in the single screw pump body 1 maintains a stable temperature throughout the process, and avoids problems such as solidification of the material due to abnormal temperature affecting the conveying.

[0033] Example 3 Based on Example 1, such as Figures 1 to 3 , Figures 5 to 7 As shown, the hopper 21 is also equipped with an anti-blocking push rod assembly 25. The anti-blocking push rod assembly 25 includes a seat cylinder 251. The outer peripheral wall of the seat cylinder 251 is connected to the inner wall of the hopper 21 through multiple connecting rods 252, and the seat cylinder 251 is coaxially and movably sleeved on the outside of the rotating rod 23. The push cylinder 253 is vertically arranged on the seat cylinder 251, and a push plate 254 is horizontally arranged on the piston rod of the push cylinder 253. The position of the push plate 254 corresponds to the position of the feed inlet 211. Multiple push rods 255 are provided, and the multiple push rods 255 are arranged vertically on the push plate 254 at intervals. The length direction of the push rod 255 is the same as the length direction of the rotating rod 23, and the push rod 255 is located between the two stirring discs 24 near the seat cylinder 251.

[0034] The material first enters the hopper 21 through the feed inlet 211. At the same time, the cylinder 253 can be activated to drive the piston rod to reciprocate, which in turn drives the push plate 254 and push rod 255 to reciprocate linearly in the gap between the two mixing discs 24. This can push and break up large pieces of material stuck at the feed inlet 211 and send them into the hopper 21. The drive motor 22 maintains a constant speed and drives the mixing rod 241 to continuously shear and break up the material in the hopper 21. At the same time, the mixing rod 241 scrapes the inner wall of the hopper 21 throughout the process to prevent high viscosity or particulate material from accumulating and clumping on the inner wall of the cavity and at the feed inlet 211, thus completely eliminating the risk of material blockage at the suction chamber 11.

[0035] Example 4 Based on Example 1, such as Figure 1 As shown, adjacent insulation jackets 3 are connected by flanges (flanges are existing technology and will not be described in detail); the insulation jackets 3 are coaxial with the single screw pump body 1, and the sum of the lengths of multiple insulation jackets 3 along the axial direction is greater than the length of the single screw pump body 1 in the conveying direction; adjacent insulation jackets 3 are locked and sealed by butt flanges, so that the total coverage length of all insulation jackets 3 along the axial direction is completely greater than the total length of the single screw pump body 1 in the conveying direction, achieving a complete wrapping of the outer wall of the single screw pump body 1 without dead angles, which helps to keep the temperature of the material conveyed in the single screw pump body 1 stable.

[0036] Example 5 Based on Example 1, such as Figure 1 , Figure 8 As shown, the Y-type three-way ball valve 33 is located inside the insulation jacket 3. The inlet of the Y-type three-way ball valve 33 is movably connected to the medium inlet 31. One outlet of the Y-type three-way ball valve 33 is connected to the connecting pipe 5. The other outlet of the Y-type three-way ball valve 33 is located outside the medium ring pipe 4 and is connected to the inside of the insulation jacket 3. The connecting pipe 6 is movably connected to the medium outlet 32. A sliding groove 1 is horizontally provided inside the insulation jacket 3 near the medium inlet 31. A slider 1 that matches the sliding groove 1 is provided on the outer wall of the connecting pipe 5. The slider 1 is slidably disposed in the sliding groove 1. A sliding groove 2 is horizontally provided inside the insulation jacket 3 near the medium outlet 32. A slider 2 that matches the sliding groove 2 is provided on the outer wall of the connecting pipe 6. The slider 2 is slidably disposed in the sliding groove 2.

[0037] Before connecting two adjacent insulation jackets 3, slider one can be installed in slide groove one and slider two can be installed in slide groove two at the same time. This allows each medium ring pipe 4 to be movably sleeved on the outside of the single screw pump body 1, enabling quick disassembly and assembly, as well as cleaning and maintenance of the inside of the insulation jacket 3. It also helps to keep the temperature of the material conveyed in the single screw pump body 1 stable when a cold medium (or hot medium) is added.

[0038] After the single screw pump body 1 finishes pumping the material, the cleaning medium can be introduced into the insulation jacket 3 through the other outlet of the Y-type three-way ball valve 33, thereby cleaning the inner circumferential wall of the insulation jacket 3.

[0039] Example 6 Based on Example 1, such as Figure 1 , Figure 8 As shown, a medium insulation box is installed outside the pump body 1 of the single screw pump. A circulating pump is installed inside the medium insulation box. The outlet and inlet of the circulating pump are connected to the medium inlet 31 and the medium outlet 32, respectively.

[0040] After the single screw pump body 1 finishes pumping the material, the circulation pump inside the medium insulation box is started. The cold medium (or hot medium) stored at a constant temperature in the box is transported to the medium inlet 31 of each insulation jacket 3 through the outlet of the circulation pump. The cold medium (or hot medium) is sent into each medium ring pipe 4 through the Y-type three-way ball valve 33 and the connecting pipe 1 5. After the medium has completed sufficient heat exchange in the medium ring pipe 4, it flows back to the medium insulation box from the medium outlet 32 ​​through the connecting pipe 2 6. The inlet of the circulation pump is used to re-extract the medium to complete the closed circulation, thus maintaining the stable circulation of the cold medium (or hot medium).

[0041] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A heat-insulating and anti-clogging single screw pump, characterized in that, include: A single screw pump body (1) is provided with a suction chamber (11) and an anti-clogging component (2) is provided in the suction chamber (11). Insulation jacket (3), multiple insulation jackets (3) are provided, and multiple insulation jackets (3) are sequentially sleeved on the outside of the single screw pump body (1) along the conveying direction of the single screw pump body (1). The insulation jackets (3) are connected to each other. The outer peripheral wall of the insulation jacket (3) is provided with a medium inlet (31) and a medium outlet (32) along the circumferential direction. A Y-type three-way ball valve (33) is provided on the medium inlet (31). Medium ring pipe (4), multiple medium ring pipes (4) are arranged in parallel and spaced within each insulation jacket (3). The medium ring pipe (4) is movably sleeved on the outside of the single screw pump body (1). The end of the medium ring pipe (4) near the Y-type three-way ball valve (33) is connected to the Y-type three-way ball valve (33) through connecting pipe one (5). The end of the medium ring pipe (4) near the medium outlet (32) is connected to the medium outlet (32) through connecting pipe two (6).

2. The heat-insulating and anti-clogging single screw pump as described in claim 1, characterized in that, The anti-blocking component (2) includes: The hopper (21) is a hollow cylindrical structure. The hopper (21) is horizontally arranged in the suction chamber (11). The outer peripheral wall of the hopper (21) is provided with an inlet (211) and an outlet (212) in sequence along the circumferential direction. The inlet (211) and outlet (212) are distributed from top to bottom. The drive motor (22) is located on one of the circular end faces of the hopper (21); Rotating rod (23) is coaxially mounted on the output shaft of drive motor (22), and the end of rotating rod (23) away from drive motor (22) is rotatably mounted on another circular end face of hopper (21); A mixing plate (24) is provided. Multiple mixing plates (24) are distributed at intervals along the length direction of the rotating rod (23). Multiple stirring rods (241) are evenly distributed along the circumferential direction on the outer peripheral wall of the mixing plate (24).

3. The heat-insulating and anti-clogging single screw pump as described in claim 2, characterized in that, The end of the stirring rod (241) away from the stirring plate (24) is in contact with the inner peripheral wall of the hopper (21).

4. The heat-insulating and anti-clogging single screw pump as described in claim 2, characterized in that, The hopper (21) is also equipped with an anti-blocking push rod assembly (25), which includes: The outer peripheral wall of the seat (251) is connected to the inner wall of the hopper (21) by multiple connecting rods (252), and the seat (251) is coaxially and movably sleeved on the outside of the rotating rod (23); A push cylinder (253) is vertically mounted on a seat cylinder (251). A push plate (254) is horizontally mounted on the piston rod of the push cylinder (253). The position of the push plate (254) corresponds to the position of the feed inlet (211). A push rod (255) is provided, and multiple push rods (255) are arranged vertically at intervals on the push plate (254).

5. The heat-insulating and anti-clogging single screw pump as described in claim 4, characterized in that, The length direction of the push rod (255) is the same as that of the rotating rod (23), and the push rod (255) is located between the two stirring discs (24) near the seat cylinder (251).

6. The heat-insulating and anti-clogging single screw pump as described in claim 1, characterized in that, The two adjacent insulation jackets (3) are connected by flanges.

7. The heat-insulating and anti-clogging single screw pump as described in claim 1, characterized in that, The Y-type three-way ball valve (33) is located inside the insulation jacket (3). The inlet of the Y-type three-way ball valve (33) is movably connected to the medium inlet (31). One of the outlets of the Y-type three-way ball valve (33) is connected to the first connecting pipe (5). The other outlet of the Y-type three-way ball valve (33) is located outside the medium ring pipe (4), and the other outlet of the Y-type three-way ball valve (33) is connected to the inside of the insulation jacket (3). The second connecting pipe (6) is movably connected to the medium outlet (32).

8. A heat-insulating and anti-clogging single screw pump as described in claim 7, characterized in that, A sliding groove is horizontally provided inside the insulation jacket (3) near the medium inlet (31). A slider is provided on the outer wall of the connecting pipe (5) that is compatible with the sliding groove. The slider is slidably provided inside the sliding groove. A sliding groove is horizontally provided inside the insulation jacket (3) near the medium outlet (32). A slider is provided on the outer wall of the connecting pipe (6) that is compatible with the sliding groove. The slider is slidably provided inside the sliding groove.

9. A heat-insulating and anti-clogging single screw pump as described in claim 1, characterized in that, The outside of the single screw pump body (1) is equipped with a medium insulation box, and a circulating pump is installed inside the medium insulation box. The outlet and inlet of the circulating pump are connected to the medium inlet (31) and the medium outlet (32) respectively.

10. A heat-insulating and anti-clogging single screw pump as described in claim 6, characterized in that, The insulation jacket (3) is coaxial with the single screw pump body (1), and the sum of the lengths of the multiple insulation jackets (3) in the axial direction is greater than the length of the single screw pump body (1) in the conveying direction.

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