Downhole filling assembly

Abstract

The underground filling assembly comprises a support, a conveying pipe and a plurality of filling pipes corresponding to different filling positions, and further comprises a sliding mechanism and a reversing valve, the sliding mechanism comprises a rail and a sliding block, the rail is connected to the support and extends upwards in the height direction, and the sliding block is slidably connected to the rail; the reversing valve is connected between the conveying pipe and the multiple filling pipes so that the conveying pipe can be switched to communicate with the different filling pipes, and the reversing valve is connected to the sliding block. According to the underground filling assembly, the sliding mechanism is arranged, so that the reversing valve can be lifted on the sliding mechanism, the reversing valve does not occupy the space of the bottom face of the support, the reversing valve can slide along the rail to adapt to movement of the support, and the length of the conveying pipe is reduced; according to the underground filling assembly, a worker can move on the support more conveniently, good safety is achieved, and the situation that the worker cannot clean the support easily due to the fact that the worker cannot clean the support easily in the cleaning process of the support is avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of underground mining, and specifically, to an underground filling assembly. Background Art

[0002] During the process of underground mining, it is necessary to inject concrete paste into the goaf for filling. In the related art, the concrete paste is conveyed into the filling pipeline through a conveying pipeline, and then the concrete paste is injected into the goaf through the filling pipeline. The conveying pipeline and the filling pipeline at different positions are connected through a reversing valve. The traditional reversing valve is relatively bulky and is usually arranged in a floor-standing manner. Such an arrangement not only occupies a large amount of space and is not conducive to the staff to pass through, but also is not conducive to the subsequent cleaning work of the pipeline and the mounting rack. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide an underground filling assembly, which can reduce the occupied space of the reversing valve.

[0004] To achieve the above purpose, the present disclosure provides an underground filling assembly, including a bracket, a conveying pipe, and a plurality of filling pipes corresponding to different filling positions, and further including:

[0005] A sliding mechanism, the sliding mechanism includes a track and a slider, the track is connected to the bracket and is arranged upward in the height direction, and the slider is slidably connected to the track;

[0006] A reversing valve, connected between the conveying pipe and the plurality of filling pipes for switching the connection between the conveying pipe and different filling pipes, and the reversing valve is connected to the slider.

[0007] Optionally, the reversing valve includes a valve body and a valve core. A connecting plate is provided at the top of the valve body for cooperating with the slider to connect the valve body to the slider. A cylindrical receiving groove is further provided in the valve body, the opening of the receiving groove is located at the bottom of the valve body, and three valve ports are further provided on the valve body, and the valve ports are communicated with the receiving groove. The valve core is rotatably connected in the receiving groove so as to rotate relative to the axis of the receiving groove to connect different two valve ports.

[0008] Optionally, the valve core is cylindrical, and the outer wall of the valve core fits with the inner wall of the receiving groove. A connecting channel is provided in the valve core, and the connecting channel includes at least two interfaces. The interfaces are located at the ends of the connecting channel and penetrate the outer surface of the valve core, and can rotate with the valve core to dock with the valve ports and connect the two docked valve ports.

[0009] Optionally, the connecting channel is T-shaped, and there are three interfaces, namely two coaxially arranged first interfaces and a second interface. The three valve ports are also arranged in a T shape, including two first valve ports coaxially arranged with the first interfaces, and a second valve port coaxially arranged with the second interface and oppositely arranged. The valve core can connect different valve ports by rotating 90° relative to the valve body.

[0010] Optionally, two limit posts are provided on the valve body, and the two limit posts are respectively located at the edge positions of the accommodating groove and are 90° apart along the circumference of the accommodating groove. A limit rod is provided at the bottom of the valve core, and the limit rod extends radially outward from the valve core and is located between the two limit posts. The limit post is used to block the limit rod so that the limit rod can only rotate between the two limit posts.

[0011] Optionally, a connecting shaft extending in a vertical direction is provided at the bottom of the valve core. The connecting shaft is fixedly connected to the valve core and is concentrically arranged with the valve core. An operating rod is also provided in the connecting shaft. The operating rod extends radially along the above-mentioned valve core and is used to drive the connecting shaft to rotate along its own axis.

[0012] Optionally, a telescopic tube is provided at the valve port, and the telescopic tube includes an outer tube and an inner tube. The outer tube is fixedly connected to the valve port, and the inner tube is located in the outer tube and can be telescoped relative to the axis of the outer tube. An annular protrusion is also provided on the inner tube, and the annular protrusion is used to connect with the delivery tube and the filling tube.

[0013] Optionally, an annular clamping block is provided in the inner cavity of the outer tube away from the valve port, and an annular clamping groove is provided on the outer wall of the inner tube for cooperating with the clamping block, and the annular clamping groove extends along the axis of the inner tube, and the telescopic length of the inner tube along the outer tube is the same as the extension distance of the clamping groove along the axis of the inner tube.

[0014] Optionally, a plurality of limiting holes and at least two limiting members are provided on the track, and the plurality of limiting holes are arranged at intervals along the extension direction of the track, and at least two limiting members can be inserted into different limiting holes to limit the sliding range of the slider in the track to between the two limiting members.

[0015] Optionally, baffles are provided at both ends of the track to prevent the slider from sliding out of the track, and one of the baffles is fixedly connected to the track, and the other baffle is detachably connected to the track.

[0016] Compared with the prior art, the advantages of the present disclosure are as follows: The downhole filling assembly of the present disclosure includes a sliding mechanism and a reversing valve. The sliding mechanism includes a track and a slider, and the reversing valve is connected to the slider and can slide on the track along with the slider. By providing the sliding mechanism, the reversing valve can be lifted on the sliding mechanism, so that the reversing valve is at a certain distance from the bottom surface of the support, thus preventing the reversing valve from occupying the space on the bottom surface of the support. And since the reversing valve can slide along the track, it has a certain moving distance, so that the conveying pipe connected to the reversing valve does not need to be set at a long distance to adapt to the movement of the support. Furthermore, the downhole filling assembly of the present disclosure is more convenient for the staff to move on the support, has better safety, and will not cause obstacles during the cleaning process of the support, making it difficult for the staff to clean the support.

[0017] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0019] Figure 1 is the front view of the downhole filling assembly provided in the exemplary embodiment of the present disclosure;

[0020] Figure 2 is the front view of the track in the downhole filling assembly provided in the exemplary embodiment of the present disclosure;

[0021] Figure 3 is the side view of the track in the downhole filling assembly provided in the exemplary embodiment of the present disclosure;

[0022] Figure 4 is the structural schematic diagram of the valve body in the downhole filling assembly provided in the exemplary embodiment of the present disclosure;

[0023] Figure 5 is the top view of the valve body in the downhole filling assembly provided in the exemplary embodiment of the present disclosure;

[0024] Figure 6 is the cross-sectional view of the telescopic pipe in the downhole filling assembly provided in the exemplary embodiment of the present disclosure;

[0025] Figure 7 is the structural schematic diagram of the valve core in the downhole filling assembly provided in the exemplary embodiment of the present disclosure;

[0026] Figure 8 is the top view of the valve core in the downhole filling assembly provided in the exemplary embodiment of the present disclosure.

[0027] Description of Reference Numerals

[0028] 1 - Sliding mechanism; 11 - Track; 111 - Limit hole; 112 - Limiting member; 113 - Baffle; 12 - Slide block;

[0029] 2 - Directional control valve; 21 - Valve port; 211 - First valve port; 212 - Second valve port; 22 - Valve body; 221 - Connection plate; 222 - Accommodating groove; 223 - Limit post; 23 - Spool; 231 - Connection channel; 232 - Interface; 2321 - First interface; 2322 - Second interface; 233 - Limit rod; 234 - Connection shaft; 235 - Operating rod; 24 - Expansion tube; 241 - Outer tube; 242 - Inner tube; 243 - Annular protrusion; 244 - Annular clamping block; 245 - Annular clamping groove;

[0030] 3 - Bracket. Detailed Description of the Invention

[0031] The following is a detailed description of the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present disclosure, and are not intended to limit the present disclosure.

[0032] In the present disclosure, unless otherwise specified, the directional terms such as "upper, lower, high, low, top, bottom" generally refer to the orientation of the corresponding components or structures in the direction of gravity. "Inner, outer" refer to the inside and outside of the contour of the corresponding components. In addition, it should be noted that the terms such as "first, second" are used to distinguish one element from another, and do not have sequence or importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same elements. The above definitions are only for the purpose of explaining and illustrating the present disclosure, and should not be construed as a limitation to the present disclosure.

[0033] For the sake of easy understanding, the following refers to the attached Figures 1 to 8 drawings and describes in detail the specific structure and working principle of the downhole filling assembly of the present disclosure in conjunction with the embodiments.

[0034] The downhole filling assembly of the present disclosure can fill the part of the downhole that has been mined with concrete paste, including a bracket, which provides an installation foundation for other components of the filling assembly, usually made of metal materials. It also includes a delivery pipe and filling pipes corresponding to multiple positions to be filled. Among them, the delivery pipe is connected to the outside and can transport the concrete paste from the outside to the downhole, while each different filling pipe extends to the position to be filled, so that the concrete paste in the delivery pipe can be transported to the position to be filled through the filling pipe for filling.

[0035] See Figure 1, the downhole filling assembly of the present disclosure further includes a sliding mechanism 1 and a reversing valve 2. The sliding mechanism 1 includes a track 11 and a slider 12. The track 11 is connected to the support. It can be linear or curved, depending on the actual situation. And the track 11 is arranged upward in the height direction so that the track 11 can be at a certain height from the ground. The slider 12 is slidably connected to the track 11. The reversing valve 2 is connected to the slider 12 and can slide along the track 11 with the slider 12. The delivery pipe and multiple filling pipes are all connected to the reversing valve 2 to switch the connection between the delivery pipe and different filling pipes through the reversing valve 2. And since there are multiple positions to be filled downhole, the number of reversing valves 2 can also be set to multiple, specifically depending on the actual situation.

[0036] In the related art, the reversing valve 2 is usually fixedly arranged on the ground, so it occupies a certain space on the bottom surface of the support. As a result, when workers walk on the support, they are easily tripped by the reversing valve 2, and safety hazards are likely to occur. Also, during the cleaning of the support, it is obstructed by the reversing valve 2 and difficult to clean. And since the support also needs to move a certain distance according to the actual situation during the mining process, the fixed arrangement of the reversing valve 2 results in a longer length of the delivery pipe between the reversing valves 2, which is arranged in an S shape or a U shape to ensure that the delivery pipe will not break during the movement of the support. This further reduces the moving area of the workers and is more likely to cause safety hazards.

[0037] However, in the downhole filling assembly of the present disclosure, by setting the sliding mechanism 1, the reversing valve 2 can be lifted on the sliding mechanism 1, so that the reversing valve 2 is at a certain distance from the bottom surface of the support, thus preventing the reversing valve 2 from occupying the space on the bottom surface of the support. And since the reversing valve 2 can slide along the track 11, the reversing valve 2 has a certain moving distance, so that the delivery pipe connected to the reversing valve 2 does not need to be set at a longer distance to adapt to the movement of the support. Furthermore, the downhole filling assembly of the present disclosure is more convenient for workers to move on the support, has better safety, and does not cause obstruction during the cleaning of the support, making it difficult for workers to clean the support.

[0038] In an embodiment of the present disclosure, refer to Figure 2 and Figure 3, a plurality of limiting holes 111 and at least two limiting members 112 are arranged on the track 11, and the plurality of limiting holes 111 are arranged at intervals along the extending direction of the track 11. When in use, one limiting hole 111 can be selected from each of the limiting holes 111 on both sides of the slider 12, and then the limiting members 112 are respectively inserted into the selected limiting holes 111 so that the slider 12 is located between the two limiting members 112, so as to limit the sliding range of the slider 12 on the track 11 between the two limiting members 112, avoiding the breakage of the conveying pipe or filling pipe connected to the reversing valve 2 caused by the slider 12 sliding a long distance.

[0039] In an embodiment of the present disclosure, refer to Figure 2 and Figure 3 , baffles 113 are arranged at both ends of the track 11, and one of the baffles 113 is fixedly connected to the track 11, and the other baffle 113 is detachably connected to the track 11. By arranging the baffles 113, it is possible to prevent the slider 12 from sliding out of the end of the track 11 during the sliding process, and the detachable connection of one of the baffles 113 to the end of the track 11 makes it more convenient for the staff to disassemble the slider 12. In this embodiment, the track 11 is in an I-shape, and the detachable connection manner between the baffle 113 and the track 11 can be directly snapped onto the track 11. Of course, in other embodiments, the shape of the track 11 and the connection manner between the baffle 113 and the track 11 can also be of other types, which can be determined according to the actual situation, and the present disclosure does not limit this.

[0040] In the related art, the commutation of the reversing valve 2 is usually driven hydraulically to drive the valve core 23 to move in the valve body 22, and this commutation method usually causes the concrete paste in the reversing valve 2 to be extruded out of the reversing valve 2 to contaminate the bracket, and it is also difficult to clean after the filling is completed. To solve the above problems, the reversing valve 2 of the present disclosure commutes by rotating the valve core 23 relative to the valve body 22, so as to avoid the concrete paste being extruded out of the reversing valve 2 during the commutation process.

[0041] In an embodiment of the present disclosure, refer to Figure 4 , Figure 5 and Figure 7 , the reversing valve 2 includes a valve body 22 and a valve core 23. A connecting plate 221 is arranged on the top of the valve body 22, which can cooperate with the slider 12 to connect the reversing valve 2 to the slider 12, refer to Figure 4The connection method can be to set a circular hole on the connecting plate 221, and connect the reversing valve 2 to the slider 12 through a rope or the like. A cylindrical receiving groove 222 and a valve port 21 are also provided in the valve body 22, and the valve port 21 can be provided with multiple valve ports for connecting the delivery pipe and the filling pipe. In this embodiment, three valve ports 21 are provided, and the reversing valve 2 is a three-way reversing valve. Of course, in other embodiments, more valve ports 21 can be provided, and the present disclosure does not limit this. The receiving groove 222 is used to accommodate a cylindrical valve core 23, so that the valve core 23 can be rotated relative to the axis of the receiving groove 222 to connect two different valve ports 21, thereby completing the switching of the connection between the delivery pipe and different filling pipes.

[0042] In one embodiment of the present disclosure, see Figure 5 and Figure 6 A telescopic tube 24 is provided at the valve port 21, and the delivery tube and the filling tube can be connected to the valve port 21 through the telescopic tube 24. The delivery tube and the filling tube can be flexibly connected by providing the telescopic tube 24, which facilitates the rapid disassembly of the pipeline. Specifically, the telescopic tube 24 includes an outer tube 241 and an inner tube 242. One end of the outer tube 241 is fixedly connected to the valve port 21. The inner tube 242 is located in the outer tube 241 and can be telescoped relative to the axis of the outer tube 241. An annular protrusion 243 is also provided on the outer wall of the inner tube 242. The annular protrusion 243 extends outward along the radial direction of the inner tube 242, so that the delivery tube and the filling tube can be connected to the telescopic tube 24 by being clamped on the annular protrusion 243. When connecting the delivery pipe and the filling pipe, it is only necessary to insert the delivery pipe or the filling pipe into the telescopic pipe 24 and clamp it on the annular protrusion 243 to complete the connection with the valve port 21. When disassembling, it is necessary to move the inner tube 242 in the direction of the outer tube 241 and simultaneously pull the delivery pipe and the filling pipe to complete the quick disassembly from the valve port 21.

[0043] In one embodiment of the present disclosure, see Figure 5 and Figure 6 An annular clamping block 244 is provided in the inner cavity of the end of the outer tube 241 away from the valve port 21, and an annular clamping groove 245 is provided on the outer wall of the inner tube 242 located at the outer tube 241. The annular clamping block 244 can be located at the pipe mouth position of the outer tube 241 and in the annular clamping groove 245 to ensure that the inner tube 242 will not be separated from the outer tube 241. The annular clamping groove 245 extends along the axis of the inner tube 242, and the telescopic length of the inner tube 242 in the outer tube 241 is equal to the extension distance of the annular clamping groove 245 along the axis of the inner tube 242. When the inner tube 242 needs to be moved, just pull the inner tube 242 to move the annular clamping block 244 in the annular clamping groove 245.

[0044] In one embodiment of the present disclosure, see Figure 7 andFigure 8 , the valve core 23 is cylindrical, and the outer wall of the valve core 23 fits against the inner wall of the receiving groove 222 to ensure that the concrete paste does not leak during the rotation of the valve core 23 relative to the receiving groove 222. A connection channel 231 is also provided in the valve core 23. The connection channel 231 includes at least two interfaces 232. The interfaces 232 are located at the ends of the connection channel 231 and penetrate the outer surface of the valve core 23 for docking with the valve ports 21. The at least two interfaces 232 can ensure that they can dock with the two valve ports 21 during the rotation of the valve core 23 and connect the two docked valve ports 21.

[0045] In an embodiment of the present disclosure, refer to Figure 5 and Figure 8 , the connection channel 231 is in a T shape, and there are three interfaces 232, namely two coaxially arranged first interfaces 2321 and a second interface 2322 perpendicular to the axes of the two first interfaces 2321. There are also three valve ports 21 on the corresponding valve body 22 and they are arranged in a T shape, including two first valve ports 211 coaxially arranged with the first interfaces 2321, and a second valve port 212 coaxially and oppositely arranged with the second interface 2322. In the initial position, the outer sides of the two first valve ports 211 are connected with conveying pipes and are docked with the two first interfaces 2321, and the filling pipe is connected to the second valve port 212. Such a setting can enable the concrete paste between the two conveying pipes to flow in a straight line during flow, with lower resistance and smoother flow.

[0046] When it is necessary to switch the conveying pipe, the staff needs to rotate the valve core 23 so that the valve core 23 rotates 90° relative to the valve body 22, so that one of the first interfaces 2321 on the connection channel 231 of the valve core 23 is disengaged from a first valve port 211 and docked with the second valve port 212, and the other first interface 2321 rotates to the position of the original second interface 2322, and the second interface 2322 rotates to dock with the first valve port 211 disengaged from the first interface 2321 to complete the connection between the conveying pipe at the first valve port 211 and the filling pipe at the second valve port 212. Of course, in other embodiments, the structures of the valve ports 21 and the interfaces 232 in the valve core 23 and the valve body 22 can also be of other types, which can be determined according to the actual situation, and the present disclosure does not limit this.

[0047] In an embodiment of the present disclosure, refer to Figure 4 and Figure 5, a connecting shaft 234 extending in the vertical direction is provided at the bottom of the valve core 23. The connecting shaft is fixedly connected to the valve core 23 and is concentric with the valve core 23. An operating rod 235 is provided on the connecting shaft 234. The operating rod 235 extends radially along the valve core 23, so that when an operator needs to rotate the valve core 23, the connecting shaft 234 can be rotated by rotating the operating rod 235, and then the valve core 23 can be driven to rotate by the connecting shaft 234. Of course, in other embodiments, the valve core 23 can also be driven to rotate in other ways, which can be determined according to the actual situation, and the present disclosure does not limit this.

[0048] In an embodiment of the present disclosure, refer to Figure 4 and Figure 5 , in order to ensure the rotation angle of the valve core 23 and prevent the valve core 23 from having an excessive or insufficient rotation angle during rotation, resulting in the inability to connect the two valve ports 21, two limit posts 223 are provided on the valve body 22. The two limit posts 223 are respectively located at the edge positions of the receiving groove 222 and are 90° apart along the circumferential direction of the receiving groove 222. A limit rod 233 is provided at the bottom of the valve core 23. The limit rod 233 extends radially along the valve core 23 and is located between the two limit posts 223. The rotation angle of the limit rod 233 can be blocked by the limit posts 223, so that the limit rod 233 can only rotate 90° between the two limit posts 223.

[0049] When the operator needs to rotate the valve core 23 to adjust the connection between different valve ports 21, for example, in the initial position, the two first valve ports 211 and the first interface 2321 are connected, and the limit rod 233 is in contact with one of the limit posts 223. When it is necessary to adjust to the connection between the first valve port 211 and the second valve port 212, the operator only needs to pay attention to the position of the limit rod 233 after rotating the valve core 23, so that the limit rod 233 is in contact with the other limit post 223 after the rotation is completed, which can ensure that the valve core 23 is in the correct position to connect the first valve port 211 and the second valve port 212.

[0050] When the downhole filling assembly of the present disclosure is in use, the reversing valve 2 can be first installed on the slider 12, and then the conveying pipe and the filling pipe are connected to the opposite valve ports 21 of the reversing valve 2. When it is necessary to fill the concrete paste at one of the positions to be filled, the operator can rotate the operating rod 235 to rotate the valve core 23 by 90° to connect the first valve port 211 connected to the conveying pipe with the filling pipe connected to the second valve port 212, so as to complete the filling of the concrete paste at the position to be filled. After the filling is completed, when the support needs to be moved, the reversing valve 2 can also slide on the track 11. For the downhole filling assembly of the present disclosure, by providing the sliding mechanism 1, the reversing valve 2 can be hoisted on the sliding mechanism 1, so that there is a certain distance between the reversing valve 2 and the bottom surface of the support, so that the reversing valve 2 does not occupy the space of the bottom surface of the support. And because the reversing valve 2 can slide along the track 11, the reversing valve 2 has a certain moving distance, so that the conveying pipe connected to the reversing valve 2 does not need to be set at a long distance to adapt to the movement of the support. Furthermore, the downhole filling assembly of the present disclosure can be more convenient for the operator to move on the support, has better safety, and will not cause obstacles during the cleaning process of the support, making it difficult for the operator to clean the support.

[0051] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0052] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0053] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. An underground filling assembly, comprising a support, a delivery pipe, and a plurality of filling pipes corresponding to different filling positions, characterized in that, Further comprising: A sliding mechanism (1), the sliding mechanism (1) includes a track (11) and a slider (12), the track (11) is connected to the bracket and is arranged upward in the height direction, and the slider (12) is slidably connected to the track (11); A reversing valve (2), connected between the delivery pipe and the plurality of filling pipes for switching the connection between the delivery pipe and different filling pipes, and the reversing valve (2) is connected to the slider (12).

2. The downhole filling assembly according to claim 1, characterized in that, The reversing valve (2) includes a valve body (22) and a valve core (23). A connecting plate (221) is provided at the top of the valve body (22) for cooperating with the slider (12) to connect the valve body (22) to the slider (12). A cylindrical receiving groove (222) is also provided in the valve body (22). The opening of the receiving groove (222) is located at the bottom of the valve body (22). Three valve ports (21) are further provided on the valve body (22), and the valve ports (21) communicate with the receiving groove (222). The valve core (23) is rotatably connected in the receiving groove (222) so that by rotating relative to the axis of the receiving groove (222), two different valve ports (21) are communicated.

3. The downhole filling assembly according to claim 2, wherein The valve core (23) is cylindrical, and the outer wall of the valve core (23) fits with the inner wall of the receiving groove (222). A connecting channel (231) is provided in the valve core (23). The connecting channel (231) includes at least two interfaces (232). The interfaces (232) are located at the ends of the connecting channel (231) and penetrate the outer surface of the valve core (23), and can rotate with the valve core (23) to dock with the valve ports (21) and communicate the two docked valve ports (21).

4. The downhole filling assembly according to claim 3, characterized in that The connecting channel (231) is in a T shape. There are three interfaces (232), namely two coaxially arranged first interfaces (2321) and a second interface (2322). The three valve ports (21) are also arranged in a T shape, including two first valve ports (211) coaxially arranged with the first interfaces (2321) and a second valve port (212) coaxially and oppositely arranged with the second interface (2322). The valve core (23) can rotate 90° relative to the valve body (22) to communicate different valve ports (21).

5. The downhole filling assembly according to claim 4, characterized in that, Two limit posts (223) are provided on the valve body (22). The two limit posts (223) are respectively located at the edge positions of the receiving groove (222) and are 90° apart in the circumferential direction of the receiving groove (222). A limit rod (233) is provided at the bottom of the valve core (23). The limit rod (233) extends radially outward along the valve core (23) and is located between the two limit posts (223). The limit posts (223) are used to block the limit rod (233) so that the limit rod (233) can only rotate between the two limit posts (223).

6. The downhole filling assembly according to claim 3, wherein, A connecting shaft (234) extending in a vertical direction is provided at the bottom of the valve core (23); the connecting shaft (234) is fixedly connected to the valve core (23) and is arranged concentrically with the valve core (23); an operating rod (235) is also provided in the connecting shaft (234); the operating rod (235) extends in a radial direction of the valve core (23) and is used to drive the connecting shaft (234) to rotate along its own axis.

7. The downhole filling assembly according to claim 2, characterized in that, A telescopic tube (24) is provided at the valve port (21), the telescopic tube (24) comprising an outer tube (241) and an inner tube (242), the outer tube (241) being fixedly connected to the valve port (21), the inner tube (242) being located in the outer tube (241) and being capable of telescoping relative to the axis of the outer tube (241), and an annular protrusion (243) being provided on the inner tube (242), the annular protrusion (243) being used for connecting with the delivery tube and the filling tube.

8. The downhole filling assembly according to claim 7, wherein, An annular clamping block (244) is arranged in the inner cavity of the outer tube (241) at one end away from the valve port (21); an annular clamping groove (245) is arranged on the outer wall of the inner tube (242) for cooperating with the clamping block (244); the annular clamping groove (245) extends along the axis of the inner tube (242); and the telescopic length of the inner tube (242) along the outer tube (241) is the same as the extension distance of the clamping groove (245) along the axis of the inner tube (242).

9. The downhole filling assembly according to claim 1, characterized in that, The track (11) is provided with a plurality of limiting holes (111) and at least two limiting members (112); the plurality of limiting holes (111) are arranged at intervals along the extension direction of the track (11); at least two limiting members (112) can be inserted into different limiting holes (111) to limit the sliding range of the slider (12) in the track (11) to between the two limiting members (112).

10. The downhole filling assembly according to claim 1, wherein Baffles (113) are provided at both ends of the track (11) for preventing the slider (12) from sliding out of the track (11), and one of the baffles (113) is fixedly connected to the track (11), while the other baffle (113) is detachably connected to the track (11).

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