A ground source heat pump pipeline connection device

Abstract

A ground source heat pump pipeline connection device, belonging to the field of pipeline connection devices, includes a double U-joint body. The upper end of the double U-joint body is cylindrical, and the lower end is a truncated cone. Two sets of U-shaped grooves are formed on the double U-joint body. One end of each U-shaped groove is fixedly connected to an inlet pipe, and the other end is fixedly connected to an outlet pipe. A vent hole is formed in the middle of the double U-joint body. A vertical shaft is movably installed inside the vent hole and is rotatably mounted on the double U-joint body. Helical blades are fixedly installed on the outer periphery of the vertical shaft. This invention has a simple structure and ingenious design. It can use the pushing force of the push rod on the double U-joint body to continuously clean the vent hole, thereby maintaining the pressure relief function of the vent hole. It can meet market demands and is suitable for promotion.

Description

Technical Field

[0001] This invention belongs to the field of pipe connection devices, specifically a ground source heat pump pipe connection device. Background Technology

[0002] Ground source heat pumps utilize the relatively stable characteristics of underground, ambient-temperature soil and groundwater. Through a pipe system buried deep around buildings or in the groundwater, they employ the heat pump principle, using a small amount of high-grade electrical energy input to transfer low-grade heat energy to high-grade heat energy for heat exchange with the building. Currently, the buried pipes used in ground source heat pump air conditioning systems face significant resistance during construction due to the depth of the well. The pipes themselves are insufficient for proper lowering to the appropriate depth in the well. Typically, a metal push rod is used to brace against the U-shaped connector of the buried pipe, connecting the U-shaped connector and the buried pipe. Push the double U-shaped connector into the underground pipe well to an appropriate depth. When pushing the double U-shaped connector into the underground pipe well, due to the large size of the double U-shaped connector, the outer circumference of the double U-shaped connector fits against the inner wall of the underground pipe well, resulting in a pressure difference between the upper and lower parts of the double U-shaped connector. This increases the resistance of the double U-shaped connector as it is pushed into the underground pipe well. Usually, a vent hole is set in the middle of the double U-shaped connector to release the pressure below the double U-shaped connector. However, the vent hole is often blocked by soil or mud, causing the vent hole to lose its pressure release capacity and fail to meet the actual needs. Therefore, we have invented a ground source heat pump pipe connection device that can automatically clean the vent hole. Summary of the Invention

[0003] This invention provides a ground source heat pump pipeline connection device to overcome the deficiencies in the prior art.

[0004] This invention is achieved through the following technical solution:

[0005] A ground source heat pump pipeline connection device includes a double U-joint body. The upper end of the double U-joint body is cylindrical and the lower end is a truncated cone. Two sets of U-shaped grooves are opened on the double U-joint body. One end of the U-shaped groove is fixedly connected to the liquid inlet pipe and the other end is fixedly connected to the liquid outlet pipe. A vent hole is opened in the middle of the double U-joint body. A vertical shaft is movably installed in the vent hole. The vertical shaft is rotatably mounted on the double U-joint body. A spiral blade is fixedly installed on the outer circumference of the vertical shaft. The spiral blade is movably located in the vent hole. A sleeve is movably fitted on the outer side of the upper part of the vertical shaft. The sleeve is connected to the double U-joint body through a spring telescopic rod. A rotating ring is rotatably installed on the upper end of the vertical shaft through a one-way bearing. A spiral groove is opened on the inner circumference of the sleeve. A sliding rod is slidably installed in the spiral groove and fixed on the rotating ring.

[0006] As described above, in a ground source heat pump pipeline connection device, the vertical shaft is rotatably mounted on the double U-joint body via a conical ring. The conical ring is rotatably mounted on the lower end of the double U-joint body. The inner hole of the conical ring is coaxially arranged with the vent hole, and the vertical shaft is connected to the conical ring.

[0007] As described above, in a ground source heat pump pipeline connection device, the outer periphery of the double U-joint body and the conical ring is provided with the same helical blade ring, the helical blade ring is fixed on the conical ring, and the upper part of the inner periphery of the helical blade ring slides and contacts the outer periphery of the double U-joint body.

[0008] As described above, in a ground source heat pump pipeline connection device, the vertical shaft is slidably connected to a conical ring, a strip groove is opened on the inner circumference of the conical ring, a slider is slidably provided in the strip groove, and the slider is fixedly connected to the vertical shaft.

[0009] As described above, in a ground source heat pump pipeline connection device, a coaxial cone is fixedly installed at the lower end of the vertical shaft, with the tip of the cone pointing downwards, and the cone can block the inner hole of the conical ring.

[0010] As described above, in a ground source heat pump pipeline connection device, the top side of the cone is provided with a chamfered frustum.

[0011] As described above, in a ground source heat pump pipeline connection device, the upper and lower ends of the strip groove are respectively provided with beveled edges.

[0012] As described above, in a ground source heat pump pipeline connection device, several venting grooves are opened on the outer periphery of the double U-joint body.

[0013] As described above, in a ground source heat pump pipeline connection device, a coaxial insert rod is fixedly provided at the upper end of the sleeve, and a sleeve is movably fitted on the outer periphery of the insert rod, with the upper end of the sleeve being fixedly connected to a push rod.

[0014] The advantages of this invention are: the invention has a simple structure and ingenious design, and can use the pushing force of the push rod on the main body of the double U-joint to continuously clean the vent hole, thereby maintaining the pressure relief function of the vent hole, which can meet market demand and is suitable for promotion. Attached Figure Description

[0015] 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 View from point A; Figure 3 It is along Figure 2 A partial sectional view of the BB line; Figure 4 yes Figure 1 Enlarged view of section I; Figure 5 yes Figure 1A magnified view of section II.

[0017] Reference numerals: 1. Double U-connector body; 2. U-shaped groove; 201. Vertical groove; 202. Connecting groove; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Vent hole; 6. Vertical shaft; 7. Helical blade; 8. Sleeve; 9. Spring telescopic rod; 10. Rotating ring; 11. Helical groove; 12. Sliding rod; 20. Conical ring; 30. Helical blade ring; 40. Strip groove; 41. Sliding block; 50. Cone; 60. Chamfered truncated cone; 70. Beveled chamfer; 80. Vent groove; 90. Insert rod; 91. Sleeve; 92. Push rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0019] A ground source heat pump pipeline connection device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the device includes a double U-connector body 1. The upper end of the double U-connector body 1 is cylindrical, and the lower end is a truncated cone. Two sets of U-shaped grooves 2 are formed on the double U-connector body 1. Each U-shaped groove 2 includes a vertical groove 201 and a connecting groove 202. Four vertical grooves 201 are formed on the top side of the double U-connector body 1. Two corresponding vertical grooves 201 are connected through the connecting groove 202 to form a U-shaped groove 2. One end of the U-shaped groove 2 is fixedly connected to the inlet pipe 3, and the other end is fixedly connected to the outlet pipe 4. A vent hole 5 is formed in the middle of the double U-connector body 1. A vertical shaft 6 is movably installed in the vent hole 5. The vertical shaft 6 is rotatably mounted on the double U-connector body 1. A spiral blade 7 is fixedly installed on the outer periphery of the vertical shaft 6. The spiral blade 7 is movably located in the vent hole 5. The double U-connector body 1, the vent hole 5, the vertical shaft 6, and the spiral blade 7 are coaxially arranged. The outer periphery of the spiral blade 7 slides in contact with the inner periphery of the vent hole 5. In conjunction with the vertical shaft 6, the outer side of the upper part is fitted with a movable sleeve 8. The inner circumference of the lower end of the sleeve 8 slides and contacts the outer circumference of the vertical shaft 6, while the upper end is closed to reduce the adverse effects caused by soil entering the sleeve 8. The sleeve 8 is connected to the double U-joint body 1 via a spring telescopic rod 9. There are two spring telescopic rods 9, both of which can only extend and retract vertically. The upper end of the spring telescopic rod 9 is fixedly connected to the sleeve 8, and the lower end is fixedly connected to the double U-joint body 1. The upper end of the vertical shaft 6 is rotatably mounted with a rotating ring 10 via a one-way bearing. The inner ring of the one-way bearing is fixedly connected to the vertical shaft 6, and the outer ring of the one-way bearing is fixedly connected to the rotating ring 10. The vertical shaft 6, the one-way bearing, the rotating ring 10, and the sleeve 8 are coaxially arranged. A spiral groove 11 is opened on the inner circumference of the sleeve 8. The spiral groove 11 is coaxially arranged with the sleeve 8. A sliding rod 12 is slidably arranged in the spiral groove 11 and is fixed on the rotating ring 10. This invention has a simple structure and ingenious design. It can use the pushing force of the push rod 92 on the double U-joint body 1 to continuously clean the vent hole 5, thereby maintaining the pressure relief function of the vent hole 5. It can meet market demand and is suitable for promotion.When using this invention, firstly, the buried pipe is connected to the corresponding inlet pipe 3 and outlet pipe 4. The two buried pipes in each group are connected through a U-shaped groove 2 to form a heat exchange channel for water inlet and outlet. That is, the liquid in the inlet buried pipe enters the corresponding U-shaped groove 2 through the inlet pipe 3, and then enters the outlet buried pipe through the outlet pipe 4. When pushing the buried pipe into the buried pipe well, the push rod 92 pushes the sleeve 8. Since the push rod 92 is located between the four buried pipes, it prevents the push rod 92 from deviating. The push rod 92 can accurately push the sleeve 8. When pushing the sleeve 8, the sleeve 8 moves downward relative to the double U-joint body 1, and the spring telescopic rod 9 is compressed. Since the vertical shaft 6 does not move downward, the rotating ring 10 and the sliding rod 12 do not move downward. Since the sleeve 8 drives the spiral groove 11 to move downward, the sliding rod 12 slides along the spiral groove 11. The sliding rod 12 drives the rotating ring 10 along the vertical shaft 6. When the axis rotates in the forward direction, the rotating ring 10 drives the vertical shaft 6 to rotate through the one-way bearing. The vertical shaft 6 drives the spiral blade 7 to rotate. The spiral blade 7 can push the blockage in the vent hole 5 downward, thereby clearing the vent hole 5. When the push rod 92 is lifted upward, the downward pressure of the push rod 92 on the sleeve 8 is gradually removed. Under the elastic thrust of the spring telescopic rod 9, the sleeve 8 gradually moves upward and resets. The slide rod 12 slides in the reverse direction along the spiral groove 11. The slide rod 12 drives the rotating ring 10 to rotate in the reverse direction along the axis of the vertical shaft 6. At this time, the rotating ring 10 no longer drives the vertical shaft 6 to rotate through the one-way bearing, thereby preventing the blockage from returning to the vent hole 5. By repeatedly pushing and lifting the push rod 92, the sleeve 8 moves up and down relative to the double U-joint body 1, causing the spiral blade 7 to rotate continuously in the forward direction, thereby continuously clearing the blockage in the vent hole 5 and maintaining the pressure relief function of the vent hole 5.

[0020] Specifically, such as Figure 1 and Figure 4 As shown, in this embodiment, the vertical shaft 6 is rotatably mounted on the double U-connector body 1 via a conical ring 20. The conical ring 20 is rotatably mounted on the lower end of the double U-connector body 1, and is coaxial with the double U-connector body 1. The upper end of the conical ring 20 is rotatably connected to the lower end of the double U-connector body 1 via a bearing. The inner ring of the bearing is fixedly connected to the conical ring 20, and the outer ring of the bearing is fixedly connected to the double U-connector body 1. To allow the top side of the conical ring 20 to slide and contact the bottom side of the double U-connector body 1, a groove is formed on the top side of the conical ring 20, and the bearing is located in the groove. The inner hole of the conical ring 20 is coaxial with the vent hole 5, and the inner circumference of the conical ring 20 and the inner circumference of the vent hole 5 are on the same curved surface. The vertical shaft 6 is connected to the conical ring 20. When the vertical shaft 6 rotates, it drives the conical ring 20 to rotate synchronously; the inner hole of the conical ring 20 is connected to the vent hole 5, maintaining the air permeability of the upper and lower ends of the double U-connector body 1.

[0021] Specifically, such as Figure 1 , Figure 3 and Figure 4As shown, in this embodiment, the outer periphery of the double U-connector body 1 and the conical ring 20 is provided with the same helical blade ring 30. The helical blade ring 30, the double U-connector body 1 and the conical ring 20 are coaxially arranged. The helical blade ring 30 is fixed on the conical ring 20. The lower part of the inner periphery of the helical blade ring 30 is fixedly connected to the outer periphery of the conical ring 20. The upper part of the inner periphery of the helical blade ring 30 is in sliding contact with the outer periphery of the double U-connector body 1. The outer diameter of the lower part of the helical blade ring 30 gradually decreases with the conical surface of the conical ring 20, which facilitates the insertion of the helical blade ring 30 into the soil. When the conical ring 20 rotates, it drives the spiral blade ring 30 to rotate. The spiral blade ring 30 and the conical ring 20 form a drill bit, which facilitates the spiral blade ring 30 to be screwed into the mud or soil, and facilitates the insertion of the double U-joint body 1 into the buried pipe well. At the same time, the rotation of the spiral blade ring 30 relative to the double U-joint body 1 can clean away the mud adsorbed on the outer periphery of the double U-joint body 1, reduce the adhesion of clay to the outer periphery of the double U-joint body 1, and thus reduce the resistance of the double U-joint body 1 moving down along the buried pipe well. When the double U-joint body 1 descends to the bottom of the buried pipe well, the conical ring 20 continues to rotate, so that the spiral blade ring 30 can continue to be screwed into the soil, so that the double U-joint body 1 is embedded in the foundation soil, increasing the stability of the double U-joint body 1 in the buried pipe well and reducing the risk of the buried pipe moving upward and detaching.

[0022] Furthermore, such as Figure 1 and Figure 4 As shown, in this embodiment, the vertical shaft 6 is slidably connected to the conical ring 20. A strip groove 40 is opened on the inner circumference of the conical ring 20, and a slider 41 is slidably disposed in the strip groove 40. The slider 41 is fixedly connected to the vertical shaft 6. When the sleeve 8 moves downward, the friction between the sliding rod 12 and the spiral groove 11, as well as the resistance of the rotation of the vertical shaft 6 and the spiral blade 7, drives the sliding rod 12, the rotating ring 10, the vertical shaft 6 and the spiral blade 7 to move downward first. The vertical shaft 6 drives the slider 41 to move downward along the strip groove 40. At this time, the conical ring 20 does not rotate. When the slider 41 moves to the lower end of the strip groove 40, it can no longer move downward. During the process of the vertical shaft 6 and the spiral blade 7 sliding downward along the vent hole 5 and the inner hole of the conical ring 20, the mud blocked in the vent hole 5 and the inner hole of the conical ring 20 can be pushed out, further increasing the cleaning effect of the vent hole 5.

[0023] Furthermore, such as Figure 1 , Figure 3 and Figure 4As shown, in this embodiment, a coaxial cone 50 is fixedly installed at the lower end of the vertical shaft 6. The tip of the cone 50 faces downward. The cone 50 can block the inner hole of the conical ring 20. The conical surface of the cone 50, the conical surface of the conical ring 20 and the conical surface at the lower end of the double U-joint body 1 form a continuous conical surface, which reduces the resistance of the double U-joint body 1 moving downward in the buried pipe well. Under the thrust of the spring telescopic rod 9, when the sleeve 8 moves to the highest position, the slide rod 12 is located at the lowest end of the spiral groove 11, and the vertical shaft 6 is also at the highest position along with the sleeve 8 through the slide rod 12. At this time, the top side of the cone 50 abuts against the bottom side of the conical ring 20, thereby blocking the inner hole of the conical ring 20. This can prevent mud or soil from entering the vent hole 5 from the inner hole of the conical ring 20, reducing the blockage of the vent hole 5. When the sleeve 8 is pressed again, the sleeve 8 first drives the cone 50 to move down through the vertical shaft 6, and the inner hole of the conical ring 20 opens again, keeping the vent hole 5 unobstructed.

[0024] Furthermore, such as Figure 1 and Figure 4 As shown, the cone 50 in this embodiment has a truncated cone chamfer 60 on its top side. The truncated cone chamfer 60 facilitates the falling of soil and mud from the top of the cone 50 downwards.

[0025] Furthermore, such as Figure 1 and Figure 4 As shown, the upper and lower ends of the strip-shaped chute 40 in this embodiment are respectively provided with beveled chamfers 70. The beveled chamfers 70 facilitate the slider 41 to push out the soil or mud that has entered the strip-shaped chute 40.

[0026] Furthermore, such as Figure 2 As shown, several ventilation grooves 80 are formed on the outer periphery of the double U-joint body 1 in this embodiment. The ventilation grooves 80 can prevent the outer periphery of the double U-joint body 1 from being overly fitted with the inner wall of the buried pipe well, which would cause inconsistent air pressure on the upper and lower sides of the double U-joint body 1.

[0027] Furthermore, such as Figure 1 As shown, in this embodiment, a coaxial insertion rod 90 is fixedly provided at the upper end of the sleeve 8. A sleeve 91 is movably fitted around the outer periphery of the insertion rod 90. The upper end of the sleeve 91 is fixedly connected to a push rod 92. The push rod 92 is composed of several push rod tubes, and the adjacent ends of the push rod tubes are connected by threaded engagement to form a long push rod 92. When the double U-joint body 1 is pushed downward by the push rod 92, the sleeve 91 is fitted around the outer periphery of the insertion rod 90 for positioning, so that the sleeve 8 can be accurately pushed each time. When the push rod 90 is moved out, the push rod 92 can be pulled upward directly to separate the sleeve 91 from the insertion rod 90.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ground source heat pump pipeline connection device, comprising a double U-joint body (1), the upper end of the double U-joint body (1) being a cylinder and the lower end being a truncated cone, two sets of U-shaped grooves (2) being opened on the double U-joint body (1), one end of the U-shaped groove (2) being fixedly connected to the liquid inlet pipe (3), and the other end being fixedly connected to the liquid outlet pipe (4), and a vent hole (5) being opened in the middle of the double U-joint body (1), characterized in that: A vertical shaft (6) is movably installed inside the vent hole (5). The vertical shaft (6) is rotatably mounted on the double U-connector body (1). A spiral blade (7) is fixedly installed on the outer periphery of the vertical shaft (6). The spiral blade (7) is movably located inside the vent hole (5). A sleeve (8) is movably fitted on the outer side of the upper part of the vertical shaft (6). The sleeve (8) is connected to the double U-connector body (1) through a spring telescopic rod (9). A rotating ring (10) is rotatably installed on the upper end of the vertical shaft (6) through a one-way bearing. A spiral groove (11) is opened on the inner periphery of the sleeve (8). A sliding rod (12) is slidably installed in the spiral groove (11). The sliding rod (12) is fixed on the rotating ring (10). The vertical shaft (6) is rotatably mounted on the double U-connector body (1) through a conical ring (20). The conical ring (20) is rotatably mounted on the double U-connector body (1). At the lower end of the double U-connector body (1), the inner hole of the conical ring (20) is coaxially arranged with the vent hole (5), and the vertical shaft (6) is connected to the conical ring (20); the vertical shaft (6) is slidably connected to the conical ring (20), and a strip groove (40) is opened on the inner circumference of the conical ring (20). A slider (41) is slidably arranged in the strip groove (40), and the slider (41) is fixedly connected to the vertical shaft (6); a coaxial cone (50) is fixedly installed at the lower end of the vertical shaft (6), with the tip of the cone (50) pointing downwards, and the cone (50) can block the inner hole of the conical ring (20); a coaxial insert rod (90) is fixedly arranged at the upper end of the sleeve (8), and a sleeve (91) is movably fitted on the outer circumference of the insert rod (90), and the upper end of the sleeve (91) is fixedly connected to the push rod (92).

2. The ground source heat pump pipeline connection device according to claim 1, characterized in that: The outer periphery of the double U-connector body (1) and the conical ring (20) is provided with the same helical blade ring (30). The helical blade ring (30) is fixed on the conical ring (20), and the upper part of the inner periphery of the helical blade ring (30) slides and contacts the outer periphery of the double U-connector body (1).

3. The ground source heat pump pipeline connection device according to claim 1, characterized in that: The top side of the cone (50) is provided with a frustum chamfer (60).

4. The ground source heat pump pipeline connection device according to claim 1, characterized in that: The upper and lower ends of the strip groove (40) are respectively provided with chamfered surfaces (70).

5. A ground source heat pump pipeline connection device according to claim 1, characterized in that: Several ventilation grooves (80) are opened on the outer periphery of the double U-joint body (1).

Images