A ground source heat pump buried pipe backfill material conveying device and conveying method thereof

Abstract

The present invention discloses a ground source heat pump buried pipe backfill material conveying device and a conveying method thereof, including a device main body, a mixing structure installed inside the device main body, the mixing structure including a driving motor and a mixing paddle, the driving motor is fixedly installed at one end of the device main body, the output end of the driving motor is connected to the mixing paddle through a rotating shaft transmission, and through the provided discharging structure, when in use, the adjusting handle is used to rotate the adjusting rod to drive the sliding block to slide at the lower end of the inner part of the discharging hopper, when a larger output port is needed, the sliding block is controlled to slide in the direction of the adjusting handle to enlarge the opening between the baffle and the discharging hopper outlet, when a smaller gap needs to be backfilled, the sliding block is controlled to slide in the opposite direction of the adjusting handle to reduce the spacing between the baffle and the discharging hopper outlet, and the backfill material will be discharged through the opening between the baffle and the discharging hopper outlet, thereby achieving the purpose of discharging from a smaller discharge port.

Description

Technical Field

[0001] The present invention belongs to the technical field of ground source heat pumps, and in particular relates to a ground source heat pump buried pipe backfill material conveying device and a conveying method thereof. Background Art

[0002] A ground source heat pump is a heating and cooling system that uses stable underground temperature resources for energy conversion. It transfers underground heat to the interior through an underground pipe array, which is used for heating in winter and cooling in summer. This equipment is highly efficient, environmentally friendly, and can save energy because it uses free underground heat energy, thereby reducing dependence on traditional fossil fuels.

[0003] At present, the construction of the ground source heat pump buried pipe usually requires the use of a backfill material conveying device to convey the backfill material. However, the traditional ground source heat pump buried pipe backfill material conveying device has the following problems when used:

[0004] 1. The current ground source heat pump buried pipe backfill material conveying device has a fixed conveying port size when conveying backfill materials, which makes the backfilling operation of small gaps cumbersome;

[0005] 2. The current ground source heat pump buried pipe backfill material conveying device is difficult to control the temperature and humidity of the backfill material in real time when stirring the backfill material, which can easily affect the performance of the backfill material, resulting in a decrease in the efficiency of the heat pump system and an increase in subsequent maintenance costs. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the existing defects and provide a ground source heat pump buried pipe backfill material conveying device and a conveying method thereof, so as to solve the problems proposed in the above-mentioned background technology that the conveying port size is fixed, the backfilling operation of small gaps is cumbersome, the temperature and humidity of the backfill material are inconvenient to control, the performance of the backfill material is affected, and the subsequent maintenance cost is increased.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ground source heat pump buried pipe backfill material conveying device, comprising a device body, a mixing structure installed inside the device body, the mixing structure comprising a driving motor and a mixing paddle, the driving motor is fixedly installed at one end of the device body, the output end of the driving motor is connected to the mixing paddle through a rotating shaft transmission, the mixing paddle is arranged inside the device body, a discharging structure is installed through one end of the lower surface of the device body, and a feed hopper is installed through the other end of the upper surface of the device body, the discharging structure comprises a discharging hopper and a baffle, the discharging hopper is fixedly installed at one end of the lower surface of the device body, an adjusting rod is threadedly connected to the lower end of one side of the discharging hopper, a sliding block is connected to the end of the adjusting rod extending into the discharging hopper, a spring structure is arranged between the sliding block and the side wall of the discharging hopper, and the spring structure is sleeved on the outer periphery of the adjusting rod; a baffle is also arranged between the sliding block and the side wall of the discharging hopper on one side close to the adjusting rod, and the baffle is rotatably connected to the sliding block and the side wall of the discharging hopper;

[0008] A temperature and humidity control structure is installed at the upper end of the device body, and the temperature and humidity control structure includes a lifting rod and a hair dryer. The lifting rod is fixedly connected to the two ends of the two side surfaces of the device body, and a lifting plate is slidably connected to the inner side of the lifting rod. An air outlet is installed in the middle part of the lower surface of the lifting plate, and electric heating rods are installed at both ends of the lower surface of the lifting plate.

[0009] Preferably, one end of the adjustment rod away from the sliding block is fixedly connected to an adjustment handle.

[0010] Preferably, a lifting slot is opened on the inner side of the lifting rod, a lifting motor is fixedly connected to the inner top of the lifting slot, a threaded screw is transmission-connected to the output end of the lifting motor, and the lifting plate is threadedly connected to the surface of the threaded screw.

[0011] Preferably, a heat dissipation structure is provided on the outside of the driving motor, and the heat dissipation structure includes a protective shell and a heat dissipation fan. The protective shell is fixedly installed on the outside of the driving motor, and the inside of the protective shell is fixedly connected to the heat dissipation motor through a connecting rod, and the output end of the heat dissipation motor is transmission-connected to the heat dissipation fan.

[0012] Preferably, a dustproof net is snap-connected to one inner end of the protective shell.

[0013] Preferably, a plurality of openings are provided on the upper surface of the device body.

[0014] Preferably, a controller is mounted on one side surface of the device body.

[0015] Preferably, movable wheels are installed at the four corners of the lower end of the device body, and four movable wheels are provided.

[0016] Preferably, one end of the device body away from the driving motor is rotatably connected to a push handle.

[0017] A method for conveying backfill material of a ground source heat pump buried pipe conveying device, comprising the following steps:

[0018] Step 1: prepare backfill material, pour the backfill material into the main body of the device of the present invention through the hopper, and ensure that the backfill material meets the quality requirements and has no oversized particles or impurities;

[0019] Step 2: Adjust the size of the discharge port. According to the size of the gap to be backfilled, turn the adjustment rod through the adjustment handle. When the adjustment rod is outward, the return elastic force of the spring structure is used to drive the sliding block to slide outward, and the opening between the baffle and the discharge hopper outlet is enlarged. When the adjustment rod is pushed inward, the sliding block is pushed inward to reduce the distance between the baffle and the discharge hopper outlet, so as to achieve discharge from a smaller discharge port;

[0020] Step 3: Start the mixing structure and turn on the driving motor of the mixing structure. The driving motor drives the rotating shaft to rotate, so that the mixing paddle stirs and mixes the backfill material inside the device body, and at the same time, the backfill material is conveyed from the direction of the inlet to the direction of the outlet;

[0021] Step 4: Perform temperature and humidity control, use the hair dryer and air outlet of the temperature and humidity control structure to dry the backfill material inside the device body to prevent the backfill material from being too high in humidity and affecting the backfill quality, insert the electric heating rod into the backfill material mixing structure to heat the backfill material to prevent the backfill material from being too low in temperature and affecting the backfill quality;

[0022] Step 5: Observe the state of the backfill material. During the mixing process, observe the state of the backfill material at any time to ensure that it is mixed evenly. If any abnormality is found, stop the machine immediately for inspection and troubleshooting;

[0023] Step 6: Complete backfilling. When the backfilling material reaches the ideal state, backfill through the discharge port and continue to adjust the size of the discharge port to meet the backfilling needs of different gaps. After completing the backfilling task, turn off the drive motor and stop the equipment;

[0024] Step 7: Clean the equipment, disconnect the power supply, ensure the safety of the equipment, clean the backfill material residue inside the main body of the device, check each component, and ensure that the equipment is clean and undamaged.

[0025] Compared with the prior art, the present invention provides a ground source heat pump buried pipe backfill material conveying device and conveying method thereof, which has the following beneficial effects:

[0026] When the material outlet is larger, the sliding block is controlled to slide in the direction of the adjusting handle, so that the opening between the baffle and the outlet of the discharging hopper is enlarged. When a smaller gap needs to be backfilled, the sliding block is controlled to slide in the opposite direction of the adjusting handle, so that the spacing between the baffle and the outlet of the discharging hopper becomes smaller, and the backfill material will be discharged through the opening between the baffle and the outlet of the discharging hopper, thereby achieving the purpose of discharging from the smaller outlet. When the adjusting rod is outward, the sliding block is driven to slide outward by the reset elastic force of the spring structure. When the adjusting rod is pushed inward, the sliding block is pushed inward to realize the left and right sliding of the sliding block, which effectively avoids the problem that the current ground source heat pump buried pipe backfill material conveying device has a fixed conveying port size when conveying backfill material, and the backfilling operation of the small gap is cumbersome.

[0027] 2. The present invention provides a temperature and humidity control structure. When in use, the blower and the air outlet of the temperature and humidity control structure blow out air to dry the backfill material inside the device body, thereby preventing the backfill material from being too high in humidity. The electric heating rod is inserted into the backfill material mixing structure to heat the backfill material, which can effectively prevent the backfill material from being too low in temperature and affecting the quality of the backfill material. This effectively avoids the problem that the current ground source heat pump buried pipe backfill material conveying device is difficult to control the temperature and humidity of the backfill material in real time when stirring the backfill material, which easily affects the performance of the backfill material, resulting in a decrease in the efficiency of the heat pump system and an increase in the subsequent maintenance cost.

[0028] 3. The present invention provides a heat dissipation structure to dissipate heat for the drive motor inside the hybrid structure, thereby ensuring the normal operation of the drive motor. The dust and impurities in the outside air can be effectively prevented from entering the protective housing through the dustproof net, which would cause the drive motor or the heat dissipation fan inside the protective housing to adhere to dust, making it difficult to clean.

[0029] 4. The present invention sets up a mixing structure, and the driving motor of the mixing structure drives the rotating shaft to rotate, so that the mixing paddle stirs and mixes the backfill material inside the device body, and at the same time, conveys the backfill material from the direction of the inlet toward the outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is an axonometric diagram of a ground source heat pump buried pipe backfill material conveying device proposed by the present invention;

[0032] Figure 2 It is a three-dimensional schematic diagram of a heat dissipation structure in a ground source heat pump buried pipe backfill material conveying device proposed by the present invention;

[0033] Figure 3 A three-dimensional schematic diagram of another angle of a ground source heat pump buried pipe backfill material conveying device proposed by the present invention;

[0034] Figure 4 A ground source heat pump buried pipe backfill material conveying device proposed by the present invention Figure 3 The enlarged view of point A in the middle;

[0035] Figure 5 It is a three-dimensional schematic diagram of a discharging structure in a ground source heat pump buried pipe backfill material conveying device proposed by the present invention;

[0036] Figure 6 It is a three-dimensional schematic diagram of a temperature and humidity control structure in a ground source heat pump buried pipe backfill material conveying device proposed by the present invention;

[0037] Figure 7 A ground source heat pump buried pipe backfill material conveying device proposed by the present invention Figure 6 The enlarged view of point B in the middle;

[0038] Figure 8 A three-dimensional schematic diagram of the interior of a hybrid structure of a ground-source heat pump buried pipe backfill material conveying device proposed by the present invention;

[0039] In the figure: 1. device body; 2. mixing structure; 201. driving motor; 202. rotating shaft; 203. mixing paddle; 3. heat dissipation structure; 301. protective shell; 302. dust net; 303. connecting rod; 304. heat dissipation motor; 305. heat dissipation fan; 4. temperature and humidity control structure; 401. lifting rod; 402. lifting slot; 403. lifting motor; 404. threaded screw; 405. lifting plate; 406. hair dryer; 407. air outlet; 408. electric heating rod; 5. discharging structure; 501. discharging hopper; 502. sliding block; 503. adjusting rod; 504. adjusting handle; 505. spring structure; 506. baffle; 6. feeding hopper; 7. controller; 8. moving wheel; 9. push handle. DETAILED DESCRIPTION

[0040] 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.

[0041] See also Figure 1-8

[0042] Embodiment 1

[0043] A ground source heat pump buried pipe backfill material conveying device, including a device body 1, a mixing structure 2 is installed inside the device body 1, the mixing structure 2 includes a driving motor 201 and a mixing paddle 203, the driving motor 201 is fixedly installed at one end of the device body 1, the output end of the driving motor 201 is connected to the mixing paddle 203 through a rotating shaft 202, the mixing paddle 203 is arranged inside the device body 1, a discharging structure 5 is installed through one end of the lower surface of the device body 1, and a feeding hopper 6 is installed through the other end of the upper surface of the device body 1. The discharging structure 5 includes a discharging hopper 501 and a baffle 506, and the discharging hopper 501 is fixedly installed under the device body 1. At one end of the surface, an adjusting rod 503 is threadedly connected to the lower end of one side of the discharge hopper 501, and the end of the adjusting rod 503 extending into the discharge hopper 501 is connected to a sliding block 502, and a spring structure 505 is arranged between the sliding block 502 and the side wall of the discharge hopper 501, and the spring structure 505 is sleeved on the outer periphery of the adjusting rod 503; a baffle 506 is also arranged between the sliding block 502 and the side wall of the discharge hopper 501 close to the adjusting rod 503, and the baffle 506 is rotatably connected to the sliding block 502 and the side wall of the discharge hopper 501; the baffle 506 is made of flexible rubber material, so that the baffle 506 has good stretchability; through the set discharge structure 5, when in use, By rotating the adjusting rod 503 through the adjusting handle 504, the sliding block 502 is driven to slide at the lower end of the inner part of the discharge hopper 501. When a larger output port is needed, the sliding block 502 is controlled to slide in the direction of the adjusting handle 504 to enlarge the opening between the baffle 506 and the outlet of the discharge hopper 501. When a smaller gap needs to be backfilled, the sliding block 502 is controlled to slide in the opposite direction of the adjusting handle 504 to reduce the distance between the baffle 506 and the outlet of the discharge hopper 501, and the backfill material will be discharged through the opening between the baffle 506 and the outlet of the discharge hopper 501, thereby achieving the purpose of discharging from the smaller outlet, and the adjusting rod 503 is moved to When the adjusting rod 503 is pushed inward, the sliding block 502 is pushed inward to realize the left and right sliding of the sliding block 502, which effectively avoids the problem that the current ground source heat pump buried pipe backfill material conveying device has a fixed size of the conveying port when conveying backfill materials, and the backfilling operation of small gaps is cumbersome. By setting the mixing structure 2, the driving motor 201 of the mixing structure 2 drives the rotating shaft 202 to rotate, so that the mixing paddle 203 stirs and mixes the backfill materials inside the device body 1, and at the same time, the backfill materials are conveyed from the direction of the inlet to the direction of the outlet;

[0044] In this embodiment, preferably, one end of the adjustment rod 503 away from the sliding block 502 is fixedly connected to an adjustment handle 504 .

[0045] In this embodiment, preferably, a heat dissipation structure 3 is provided on the outer side of the driving motor 201, and the heat dissipation structure 3 includes a protective shell 301 and a heat dissipation fan 305. The protective shell 301 is fixedly installed on the outer side of the driving motor 201, and the interior of the protective shell 301 is fixedly connected to a heat dissipation motor 304 through a connecting rod 303, and the output end of the heat dissipation motor 304 is transmission-connected to the heat dissipation fan 305.

[0046] In the present embodiment, preferably, a dustproof net 302 is snap-connected to one end of the interior of the protective shell 301, and the heat dissipation structure 3 is provided to dissipate heat for the drive motor 201 inside the hybrid structure 2, thereby ensuring the normal operation of the drive motor 201. The dustproof net 302 can effectively prevent dust and impurities in the outside air from entering the interior of the protective shell 301, which would cause dust to adhere to the surface of the drive motor 201 or the heat dissipation fan 305 inside the protective shell 301, making it difficult to clean.

[0047] In this embodiment, preferably, a plurality of openings are provided on the upper surface of the device body 1 .

[0048] In this embodiment, preferably, a controller 7 is installed on one side surface of the device body 1 .

[0049] In this embodiment, preferably, moving wheels 8 are installed at four corners of the lower end of the device body 1, and four moving wheels 8 are provided.

[0050] In this embodiment, preferably, one end of the device body 1 away from the driving motor 201 is rotatably connected to a push handle 9 .

[0051] A method for conveying backfill material of a ground source heat pump buried pipe conveying device, comprising the following steps:

[0052] Step 1: Preparation:

[0053] Ensure that the device body 1 is placed horizontally, the adjustment rod 503 is connected to the sliding block 502, the heat dissipation structure 3 is correctly installed, the controller 7 is started, and check whether all parts are operating normally;

[0054] Step 2: Filling materials:

[0055] Open the hopper 6, pour the backfill material into the device body 1 through the hopper 6, and observe whether the mixing paddle 203 can work normally to stir and mix the backfill material;

[0056] Step 3: Adjust the discharge port:

[0057] The size of the discharge port can be adjusted as needed by rotating the adjustment rod 503 through the adjustment handle 504 to drive the sliding block 502 to slide at the lower end of the inner part of the discharge hopper 501. When a larger output port is needed, the opening between the baffle 506 and the outlet of the discharge hopper 501 is enlarged. When a smaller gap needs to be backfilled, the distance between the baffle 506 and the outlet of the discharge hopper 501 is reduced.

[0058] Step 4: Conveying materials:

[0059] The driving motor 201 is started, and the driving motor 201 of the mixing structure 2 drives the rotating shaft 202 to rotate, so that the mixing paddle 203 stirs and mixes the backfill material inside the device body 1, and at the same time, the backfill material is conveyed from the direction of the inlet to the direction of the outlet;

[0060] Step 5: Stop the device:

[0061] When the backfilling task is completed, the driving motor 201 is turned off, the material conveying is stopped, and then the controller 7 is turned off;

[0062] Step 6: Clean the device:

[0063] After stopping the device, the device can be cleaned to remove residual materials on the sliding block 502 and the baffle 506 to ensure that the device is clean for next use.

[0064] Embodiment 2

[0065] A ground source heat pump buried pipe backfill material conveying device, including a device body 1, a temperature and humidity control structure 4 is installed on the upper end of the device body 1, the temperature and humidity control structure 4 includes a lifting rod 401 and a blower 406, the lifting rod 401 is fixedly connected to the two ends of the two side surfaces of the device body 1, the inner side of the lifting rod 401 is slidably connected to a lifting plate 405, the middle part of the lower surface of the lifting plate 405 is installed with an air outlet 407, and both ends of the lower surface of the lifting plate 405 are installed with electric heating rods 408. Through the temperature and humidity control structure 4, when in use, the blower of the temperature and humidity control structure 4 is used. 406 and the air outlet 407 blow out air to dry the backfill material inside the device body 1, thereby preventing the backfill material from being too humid. The electric heating rod 408 is inserted into the backfill material mixing structure 2 to heat the backfill material, which can effectively prevent the backfill material from being too cold and affecting the quality of the backfill material. This effectively avoids the problem that the current ground source heat pump buried pipe backfill material conveying device is difficult to control the temperature and humidity of the backfill material in real time when stirring the backfill material, which is easy to affect the performance of the backfill material, resulting in a decrease in the efficiency of the heat pump system and an increase in the subsequent maintenance cost.

[0066] In this embodiment, preferably, a lifting groove 402 is opened on the inner side of the lifting rod 401, and a lifting motor 403 is fixedly connected to the inner top of the lifting groove 402. The output end of the lifting motor 403 is transmission-connected to a threaded screw 404, and the lifting plate 405 is threadedly connected to the surface of the threaded screw 404.

[0067] A method for conveying backfill material for a ground source heat pump buried pipe comprises the following steps:

[0068] Step 1: Startup preparation:

[0069] Place the ground source heat pump buried pipe backfill material conveying device in a horizontal position; check and confirm whether the temperature and humidity control structure 4, including the lifting rod 401, the blower 406 and the electric heating rod 408, are firmly installed; turn on the controller 7, start the lifting motor 403, and ensure that the lifting plate 405 can move smoothly;

[0070] Step 2: Adjust the lifting rod 401:

[0071] The controller 7 adjusts the lifting motor 403 to lower the lifting plate 405 to a proper position so that the air outlet 407 is aligned with a predetermined area of ​​the backfill material mixed structure 2; ensure that the electric heating rod 408 is inserted into the backfill material mixed structure 2 to a proper depth for uniform heating;

[0072] Step 3: Temperature and humidity control processing:

[0073] The hair dryer 406 is turned on to blow air through the air outlet 407 to dry the backfill material to reduce the humidity; the temperature of the backfill material is monitored and the heating intensity of the electric heating rod 408 is adjusted as needed to maintain the backfill material within a suitable temperature range.

[0074] Step 4: Complete the mixing process:

[0075] While controlling the temperature and humidity, start the drive motor 201 of the mixing structure 2 to start stirring and mixing the backfill material; continuously monitor the temperature and humidity of the backfill material to ensure that it is mixed in the best condition; after the mixing is completed, shut down all equipment and prepare the device for cleaning and maintenance.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ground source heat pump buried pipe backfill material conveying device, comprising a device body (1), characterized in that: A mixing structure (2) is installed inside the device body (1), and the mixing structure (2) comprises a driving motor (201) and a mixing paddle (203). The driving motor (201) is fixedly installed at one end of the device body (1), and the output end of the driving motor (201) is connected to the mixing paddle (203) via a rotating shaft (202). The mixing paddle (203) is arranged inside the device body (1). A discharge structure (5) is installed through one end of the lower surface of the device body (1), and a feed hopper (6) is installed through the other end of the upper surface of the device body (1); The discharging structure (5) comprises a discharging hopper (501) and a baffle (506); the discharging hopper (501) is fixedly mounted on one end of the lower surface of the device body (1); an adjusting rod (503) is threadedly connected to the lower end of one side of the discharging hopper (501); the end of the adjusting rod (503) extending into the discharging hopper (501) is connected to a sliding block (502); a spring structure (505) is arranged between the sliding block (502) and the side wall of the discharging hopper (501), and the spring structure (505) is sleeved on the outer periphery of the adjusting rod (503); a baffle (506) is also arranged between the sliding block (502) and the side wall of the discharging hopper (501) close to the adjusting rod (503); and the baffle (506) is rotatably connected to the sliding block (502) and the side wall of the discharging hopper (501); A temperature and humidity control structure (4) is installed at the upper end of the device body (1), and the temperature and humidity control structure (4) includes a lifting rod (401) and a blower (406). The lifting rod (401) is fixedly connected to the two ends of the two side surfaces of the device body (1), and a lifting plate (405) is slidably connected to the inner side of the lifting rod (401). An air outlet (407) is installed in the middle part of the lower surface of the lifting plate (405), and electric heating rods (408) are installed at both ends of the lower surface of the lifting plate (405).

2. A ground source heat pump buried pipe backfill material conveying device according to claim 1, characterized in that: One end of the adjustment rod (503) away from the sliding block (502) is fixedly connected to an adjustment handle (504).

3. A ground source heat pump buried pipe backfill material conveying device according to claim 1, characterized in that: A lifting groove (402) is provided on the inner side of the lifting rod (401), a lifting motor (403) is fixedly connected to the inner top of the lifting groove (402), a threaded screw (404) is transmission-connected to the output end of the lifting motor (403), and the lifting plate (405) is threadedly connected to the surface of the threaded screw (404).

4. A ground source heat pump buried pipe backfill material conveying device according to claim 1, characterized in that: A heat dissipation structure (3) is provided on the outside of the driving motor (201), and the heat dissipation structure (3) comprises a protective shell (301) and a heat dissipation fan (305). The protective shell (301) is fixedly installed on the outside of the driving motor (201), and the inside of the protective shell (301) is fixedly connected to a heat dissipation motor (304) via a connecting rod (303), and the output end of the heat dissipation motor (304) is transmission-connected to the heat dissipation fan (305).

5. A ground source heat pump buried pipe backfill material conveying device according to claim 4, characterized in that: One end of the interior of the protective shell (301) is snap-connected with a dustproof net (302).

6. A ground source heat pump buried pipe backfill material conveying device according to claim 1, characterized in that: The upper surface of the device body (1) is provided with a plurality of openings.

7. The device for conveying backfill material for a ground source heat pump buried pipe according to claim 1, characterized in that: A controller (7) is installed on one side surface of the device body (1).

8. The device for conveying backfill material for a ground source heat pump buried pipe according to claim 1, characterized in that: Moving wheels (8) are installed at the four corners of the lower end of the device body (1), and four moving wheels (8) are provided.

9. The device for conveying backfill material for a ground source heat pump buried pipe according to claim 1, characterized in that: One end of the device body (1) away from the driving motor (201) is rotatably connected to a push handle (9).

10. The method for conveying backfill material of a ground source heat pump buried pipe according to claim 1, characterized in that: The following steps are involved: Step 1: prepare the backfill material, pour the backfill material into the device body (1) through the hopper (6), and ensure that the backfill material meets the quality requirements and does not contain oversized particles or impurities; Step 2: Adjust the size of the discharge port. According to the size of the gap to be backfilled, the adjusting handle (504) is used to rotate the adjusting rod (503). When the adjusting rod (503) is outward, the return elastic force of the spring structure (505) is used to drive the sliding block (502) to slide outward, thereby enlarging the opening between the baffle (506) and the outlet of the discharge hopper (501). When the adjusting rod (503) is pushed inward, the sliding block (502) is pushed inward, thereby reducing the distance between the baffle (506) and the outlet of the discharge hopper (501), so as to achieve discharge from a smaller discharge port. Step 3: Start the mixing structure (2), turn on the driving motor (201) of the mixing structure (2), and the driving motor (201) drives the rotating shaft (202) to rotate, so that the mixing paddle (203) stirs and mixes the backfill material inside the device body (1), and at the same time, transfers the backfill material from the direction of the inlet to the direction of the outlet; Step 4: Temperature and humidity control is performed, and the backfill material inside the device body (1) is blown dry using the blower (406) and the air outlet (407) of the temperature and humidity control structure (4) to prevent the backfill material from being too wet and affecting the backfill quality. The backfill material is heated by inserting the electric heating rod (408) into the backfill material mixing structure (2) to prevent the backfill material from being too cold and affecting the backfill quality. Step 5: Observe the state of the backfill material. During the mixing process, observe the state of the backfill material at any time to ensure that it is mixed evenly. If any abnormality is found, stop the machine immediately for inspection and troubleshooting; Step 6: backfilling is completed. When the backfilling material reaches an ideal state, backfilling is performed through the discharge port. The size of the discharge port is continuously adjusted to meet the backfilling requirements of different gaps. After the backfilling task is completed, the drive motor (201) is turned off to stop the operation of the equipment. Step 7: Clean the equipment, disconnect the power supply, ensure the safety of the equipment, clean the backfill material residue inside the device body (1), check each component, and ensure that the equipment is clean and not damaged.

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