Ground source heat pump pipeline connecting device

Abstract

A ground source heat pump pipeline connecting device belongs to the field of pipeline connecting devices and comprises a double-U connector body, the upper end of the double-U connector body is a cylinder, the lower end of the double-U connector body is a cone frustum, two sets of U-shaped grooves are formed in the double-U connector body, one end of each U-shaped groove is fixedly communicated with a liquid inlet pipe, and the other end of each U-shaped groove is fixedly communicated with a liquid outlet pipe. A ventilation through hole is formed in the middle of the double-U connector body, a vertical shaft is movably arranged in the ventilation through hole and rotationally installed on the double-U connector body, and spiral blades are fixedly installed on the periphery of the vertical shaft. The double-U connector is simple in structure and ingenious in conception, the ventilation through hole can be continuously cleaned through thrust of the push rod on the double-U connector body, so that the ventilation through hole keeps the pressure discharging function, the market requirement can be met, and the double-U connector is suitable for popularization.

Description

Technical Field

[0001] The invention belongs to the field of pipeline connection devices, in particular to a ground source heat pump pipeline connection device. Background Art

[0002] Ground source heat pump is a technology that utilizes the relatively stable characteristics of underground normal temperature soil and groundwater, and uses the heat pump principle to transfer low-level heat energy to high-level heat energy and complete heat exchange with the building through a pipe system or groundwater deeply buried around the building. Through a small amount of high-level electrical energy input, it uses the heat pump principle. At present, the buried pipes used in ground source heat pump air conditioners are too deep in the well and have great resistance to the well during construction. The support of the buried pipes themselves is not enough to lower the buried pipes to the appropriate depth of the buried pipe well. Usually, a metal push rod is used to push against the U-shaped joint of the buried pipe to connect the U-shaped joint together with the buried pipe. Push it into the buried pipe well to an appropriate depth; when pushing the double U-shaped joint into the buried pipe well, due to the large size of the double U-shaped joint, the outer circumference of the double U-shaped joint fits with the inner wall of the buried pipe well, resulting in a pressure difference between the upper and lower parts of the double U-shaped joint, increasing the resistance of the double U-shaped joint to enter the buried pipe well. Usually, a ventilation hole is set in the middle of the double U-shaped joint to discharge the pressure under the double U-shaped joint, but the ventilation hole is often blocked by soil or mud, resulting in the ventilation hole losing its pressure discharge ability and being unable to meet actual needs. Therefore, we have invented a ground source heat pump pipe connection device that can automatically clean the ventilation hole. Summary of the invention

[0003] The invention provides a ground source heat pump pipeline connection device to solve the defects in the prior art.

[0004] The present invention is achieved through the following technical solutions:

[0005] A ground source heat pump pipeline connection device comprises a double U-joint main body, the upper end of the double U-joint main body is a cylinder, the lower end is a frustum, two groups of U-shaped grooves are arranged on the double U-joint main body, one end of the U-shaped groove is fixedly connected to a liquid inlet pipe, and the other end is fixedly connected to a liquid outlet pipe, a ventilation hole is arranged in the middle of the double U-joint main body, a vertical shaft is movably arranged in the ventilation hole, the vertical shaft is rotatably installed on the double U-joint main body, a spiral blade is fixedly installed on the outer periphery of the vertical shaft, the spiral blade is movably located in the ventilation hole, a sleeve is movably mounted on the outer side of the upper part of the vertical shaft, the sleeve is connected to the double U-joint main 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 slide groove is arranged on the inner periphery of the sleeve, a sliding rod is slidably arranged in the spiral slide groove, and the sliding rod is 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 through 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 air permeable through hole, and the vertical shaft is connected to the conical ring.

[0007] In a ground source heat pump pipe connection device as described above, the outer periphery of the double U joint body and the conical ring is provided with a same spiral blade ring, the spiral blade ring is fixed on the conical ring, and the upper part of the inner periphery of the spiral blade ring is in sliding contact with the outer periphery of the double U joint body.

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

[0009] In the ground source heat pump pipe connection device as described above, a coaxial cone is fixedly installed at the lower end of the vertical axis, the tip of the cone faces downward, and the cone can block the inner hole of the conical ring.

[0010] In the ground source heat pump pipe connection device as described above, the top side of the cone is provided with a frustum chamfer.

[0011] In the ground source heat pump pipeline connection device as described above, the upper and lower ends of the strip-shaped slide groove are respectively provided with inclined chamfers.

[0012] In the ground source heat pump pipe connection device as described above, a plurality of air permeable grooves are provided on the outer periphery of the double U-joint body.

[0013] In the ground source heat pump pipeline connection device as described above, a coaxial insertion rod is fixedly provided on the upper end of the sleeve, the outer periphery of the insertion rod is movably sleeved with a sleeve, and the upper end of the sleeve is fixedly connected to the push rod.

[0014] The advantages of the present invention are: the present invention has a simple structure and an ingenious design, and can utilize the thrust of the push rod on the double U-joint body to continuously clean the vent holes, thereby enabling the vent holes to maintain a pressure relief function, and can meet market demand and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A view from point A; Figure 3 is along Figure 2 A partial cross-sectional view of line BB; Figure 4 yes Figure 1 A partial enlarged view of location Ⅰ; Figure 5 yes Figure 1A partial enlarged view of location II.

[0017] Figure numerals: 1. double U joint body, 2. U-shaped groove, 201. vertical groove, 202. connecting groove, 3. liquid inlet pipe, 4. liquid outlet pipe, 5. air permeable hole, 6. vertical axis, 7. spiral blade, 8. sleeve, 9. spring telescopic rod, 10. rotating ring, 11. spiral slide groove, 12. slide rod, 20. conical ring, 30. spiral blade ring, 40. strip slide groove, 41. slider, 50. cone, 60. frustum chamfer, 70. inclined chamfer, 80. air permeable groove, 90. plug rod, 91. sleeve, 92. push rod. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0019] A ground source heat pump pipeline connection device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, it includes a double U-joint main body 1, the upper end of the double U-joint main body 1 is a cylinder, and the lower end is a truncated cone. Two groups of U-shaped grooves 2 are provided on the double U-joint main body 1, and the U-shaped grooves 2 include vertical grooves 201 and connecting grooves 202. Four vertical grooves 201 are provided on the top side of the double U-joint main body 1, and the corresponding two 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 liquid inlet pipe 3, and the other end is fixedly connected to the liquid outlet pipe 4. A ventilating through hole 5 is provided in the middle of the double U-joint main body 1, and a vertical shaft 6 is movably provided in the ventilating through hole 5. The vertical shaft 6 is rotatably installed on the double U-joint main body 1, and a spiral blade 7 is fixedly installed on the outer periphery of the vertical shaft 6, and the spiral blade 7 is movably located in the ventilating through hole 5. The double U-joint main body 1, the ventilating through hole 5, the vertical shaft 6 and the spiral blade 7 are coaxially arranged, and the outer periphery of the spiral blade 7 is in sliding contact with the inner periphery of the ventilating through hole 5. In coordination, a sleeve 8 is movably mounted on the outer side of the upper part of the vertical shaft 6, and the inner periphery of the lower port of the sleeve 8 is in sliding contact with the outer periphery of the vertical shaft 6, and the upper port is closed to reduce the adverse effects caused by the entry of mud into the sleeve 8. The sleeve 8 is connected to the double U joint main body 1 through a spring telescopic rod 9. Two spring telescopic rods 9 are provided, and both can only be telescoped up and down. 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 main body 1. The upper end of the vertical shaft 6 is rotatably installed with a rotating ring 10 through 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 provided on the inner periphery of the sleeve 8, and the spiral groove 11 is coaxially arranged with the sleeve 8. A sliding rod 12 is provided for sliding in the spiral groove 11, and the sliding rod 12 is fixed on the rotating ring 10. The present invention has a simple structure and an ingenious design. It can use the thrust of the push rod 92 on the double U-joint body 1 to continuously clean the vent hole 5, so that the vent hole 5 maintains the pressure relief function, can meet market demand, and is suitable for promotion.When using the present invention, firstly, the buried pipe is connected with the corresponding liquid inlet pipe 3 and liquid outlet pipe 4. The two buried pipes in each group are connected through the U-shaped groove 2 to form a heat exchange channel for water inlet and return water, that is, the liquid in the liquid inlet buried pipe enters the corresponding U-shaped groove 2 through the liquid inlet pipe 3, and then enters the liquid outlet buried pipe through the liquid outlet pipe 4; when the buried pipe is pushed into the buried pipe well, the sleeve 8 is pushed by the push rod 92. Since the push rod 92 is located between the four buried pipes, the push rod 92 is prevented from deviating, and the push rod 92 can accurately push the sleeve 8. When the sleeve 8 is pushed, the sleeve 8 moves downward relative to the double U joint body 1, and the spring telescopic rod 9 is compressed. Since the vertical axis 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 slide groove 11 to move downward, the sliding rod 12 slides along the spiral slide groove 11, and the sliding rod 12 drives the rotating ring 10 along the vertical axis 6. The axis rotates forward, and the rotating ring 10 drives the vertical shaft 6 to rotate through the one-way bearing, and the vertical shaft 6 drives the spiral blade 7 to rotate. The spiral blade 7 can push the blockage in the air permeable hole 5 downward, thereby clearing the air permeable 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, and the sleeve 8 gradually moves upward and resets under the elastic thrust of the spring telescopic rod 9, and the slide bar 12 slides reversely along the spiral slide groove 11, and the slide bar 12 drives the rotating ring 10 to rotate reversely 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 air permeable hole 5 again. By repeatedly pushing and lifting the push rod 92, the sleeve 8 moves up and down relative to the double U joint body 1, so that the spiral blade 7 rotates continuously forward, thereby continuously clearing the blockage in the air permeable hole 5, so that the air permeable hole 5 maintains the pressure relief function.

[0020] Specifically, if Figure 1 and Figure 4 As shown, the vertical shaft 6 described in this embodiment is rotatably mounted on the double U joint body 1 through a conical ring 20, and the conical ring 20 is rotatably mounted on the lower end of the double U joint body 1. The conical ring 20 is coaxially arranged with the double U joint body 1, and the upper end of the conical ring 20 is rotatably connected with the lower end of the double U joint body 1 through a bearing, and the inner ring of the bearing is fixedly connected with the conical ring 20, and the outer ring of the bearing is fixedly connected with the double U joint body 1. In order to make the top side of the conical ring 20 and the bottom side of the double U joint body 1 slide and contact, a sink groove is provided on the top side of the conical ring 20, and the bearing is located in the sink groove. The inner hole of the conical ring 20 is coaxially arranged with the air-permeable through hole 5, and the inner periphery of the conical ring 20 and the inner periphery of the air-permeable through hole 5 are in the same curved surface, and the vertical shaft 6 is connected with 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 with the air-permeable through hole 5, and the air permeability of the upper and lower ends of the double U joint body 1 is maintained.

[0021] Specifically, Figure 1 , Figure 3 and Figure 4As shown, the outer periphery of the double U joint body 1 and the conical ring 20 described in this embodiment is provided with the same spiral blade ring 30, the spiral blade ring 30, the double U joint body 1 and the conical ring 20 are coaxially arranged, the spiral blade ring 30 is fixed on the conical ring 20, the lower part of the inner periphery of the spiral blade ring 30 is fixedly connected to the outer periphery of the conical ring 20, the upper part of the inner periphery of the spiral blade ring 30 is in sliding contact with the outer periphery of the double U joint body 1, and the outer diameter of the lower part of the spiral blade ring 30 gradually decreases with the conical surface of the conical ring 20, so as to facilitate the insertion of the spiral blade ring 30 into the soil. When the conical ring 20 rotates, the spiral blade ring 30 is driven to rotate. The spiral blade ring 30 and the conical ring 20 form a drill bit, which makes it easy for the spiral blade ring 30 to be screwed into the mud or soil, and for the double U joint body 1 to be inserted into the buried pipe well; at the same time, the spiral blade ring 30 rotates relative to the double U joint body 1, which can clean up the mud adsorbed on the outer periphery of the double U joint body 1, reduce the clay adhering to the outer periphery of the double U joint body 1, and thus reduce the resistance of the double U joint body 1 to move 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, thereby 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] Further, such as Figure 1 and Figure 4 As shown, the vertical shaft 6 of this embodiment is slidably connected with the conical ring 20, and a strip chute 40 is provided on the inner periphery of the conical ring 20, and a slider 41 is slidably provided in the strip chute 40, and the slider 41 is fixedly connected with the vertical shaft 6. When the sleeve 8 moves downward, the friction between the slide bar 12 and the spiral chute 11 and the resistance of the rotation of the vertical shaft 6 and the spiral blade 7 are used to drive the slide bar 12, the rotating ring 10, the vertical shaft 6 and the spiral blade 7 to move downward first, and the vertical shaft 6 drives the slider 41 to move downward along the strip chute 40. At this time, the conical ring 20 does not rotate until the slider 41 moves to the lower end of the strip chute 40 and cannot move downward further. During the downward sliding process of the vertical shaft 6 and the spiral blade 7 along the inner hole of the air-permeable through hole 5 and the conical ring 20, the mud blocked in the inner hole of the air-permeable through hole 5 and the conical ring 20 can be pushed out, further increasing the cleaning effect of the air-permeable through hole 5.

[0023] Furthermore, Figure 1 , Figure 3 and Figure 4As shown, a coaxial cone 50 is fixedly installed at the lower end of the vertical axis 6 described in this embodiment, and 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 of the lower end of the double U-joint main body 1 form a continuous conical surface, thereby reducing the resistance of the double U-joint main body 1 to move 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 bar 12 is located at the lower end of the spiral slide groove 11, and the vertical shaft 6 is also located at the highest position with the sleeve 8 through the slide bar 12. At this time, the top side of the cone 50 is in contact with the bottom side of the conical ring 20, so that the cone 50 blocks the inner hole of the conical ring 20. At this time, mud or soil can be prevented from entering the air hole 5 from the inner hole of the conical ring 20, reducing the blockage of the air hole 5; when the sleeve 8 is pressed again, the sleeve 8 first drives the cone 50 to move downward through the vertical shaft 6, and the inner hole of the conical ring 20 is opened again, so that the air hole 5 remains unobstructed.

[0024] Furthermore, Figure 1 and Figure 4 As shown, the top side of the cone 50 of this embodiment is provided with a truncated cone chamfer 60. The truncated cone chamfer 60 facilitates the soil and mud above the cone 50 to fall downward from the top of the cone 50.

[0025] Furthermore, Figure 1 and Figure 4 As shown, the upper and lower ends of the strip chute 40 of this embodiment are respectively provided with inclined chamfers 70. The inclined chamfers 70 facilitate the slider 41 to push out the soil or mud entering the strip chute 40.

[0026] Furthermore, Figure 2 As shown, the outer periphery of the double U joint body 1 of this embodiment is provided with a plurality of air permeable grooves 80. The air permeable grooves 80 can prevent the outer periphery of the double U joint body 1 from being excessively attached to the inner wall of the buried pipe well, resulting in inconsistent air pressure on the upper and lower sides of the double U joint body 1.

[0027] Furthermore, Figure 1 As shown, the upper end of the sleeve 8 in this embodiment is fixed with a coaxial insertion rod 90, and the outer periphery of the insertion rod 90 is movably sleeved with a sleeve 91, and the upper end of the sleeve 91 is fixedly connected with a push rod 92, and the push rod 92 is composed of several sections of push rod tubes, and the adjacent ends of the push rod tubes are connected by threaded cooperation 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 sleeved on 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 directly pulled upward 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, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions 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) is a cylinder, the lower end is a truncated cone, two groups of U-shaped grooves (2) are provided on the double U-joint body (1), one end of the U-shaped groove (2) is fixedly connected to a liquid inlet pipe (3), and the other end is fixedly connected to a liquid outlet pipe (4), and a ventilation hole (5) is provided in the middle of the double U-joint body (1), characterized in that: A vertical shaft (6) is movably arranged in the air-permeable through hole (5), and the vertical shaft (6) is rotatably mounted on the double U joint body (1). A spiral blade (7) is fixedly mounted on the outer periphery of the vertical shaft (6), and the spiral blade (7) is movably located in the air-permeable through hole (5). A sleeve (8) is movably mounted on the outer side of the upper part of the vertical shaft (6), and the sleeve (8) is connected to the double U joint body (1) through a spring telescopic rod (9). A rotating ring (10) is rotatably mounted on the upper end of the vertical shaft (6) through a one-way bearing. A spiral slide groove (11) is arranged on the inner periphery of the sleeve (8), and a sliding rod (12) is slidably arranged in the spiral slide groove (11), and the sliding rod (12) is fixed on the rotating ring (10).

2. A ground source heat pump pipeline connection device according to claim 1, characterized in that: The vertical shaft (6) is rotatably mounted on the double U joint body (1) via a conical ring (20). The conical ring (20) is rotatably mounted at the lower end of the double U joint body (1). The inner hole of the conical ring (20) is coaxially arranged with the air-permeable through hole (5). The vertical shaft (6) is connected to the conical ring (20).

3. A ground source heat pump pipeline connection device according to claim 2, characterized in that: The outer circumferences of the double U joint body (1) and the conical ring (20) are provided with a same spiral blade ring (30), the spiral blade ring (30) is fixed on the conical ring (20), and the upper part of the inner circumference of the spiral blade ring (30) is in sliding contact with the outer circumference of the double U joint body (1).

4. A ground source heat pump pipeline connection device according to claim 2, characterized in that: The vertical shaft (6) is slidably connected to the conical ring (20), a strip-shaped slide groove (40) is provided on the inner periphery of the conical ring (20), a sliding block (41) is slidably provided in the strip-shaped slide groove (40), and the sliding block (41) is fixedly connected to the vertical shaft (6).

5. A ground source heat pump pipeline connection device according to claim 4, characterized in that: A coaxial cone (50) is fixedly mounted on the lower end of the vertical shaft (6), with the tip of the cone (50) facing downwards. The cone (50) can block the inner hole of the conical ring (20).

6. A ground source heat pump pipeline connection device according to claim 5, characterized in that: The top side of the cone (50) is provided with a truncated cone chamfer (60).

7. A ground source heat pump pipeline connection device according to claim 4, characterized in that: The upper and lower ends of the strip-shaped slide groove (40) are respectively provided with inclined chamfers (70).

8. A ground source heat pump pipeline connection device according to claim 1, characterized in that: A plurality of air permeable grooves (80) are provided on the outer periphery of the double U joint body (1).

9. A ground source heat pump pipeline connection device according to claim 1, characterized in that: A coaxial insertion rod (90) is fixedly provided at the upper end of the sleeve (8), and a sleeve (91) is movably sleeved on the outer periphery of the insertion rod (90), and the upper end of the sleeve (91) is fixedly connected to a push rod (92).

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