Transportation pipeline dredging device for precious metal tailing treatment

Abstract

The transport pipeline dredging device for precious metal tailing treatment comprises a fixing ring, winding devices are rotationally mounted at the left end and the right end of the upper side of the fixing ring correspondingly, and a sealing belt is fixedly wound on the outer surface of each winding device; the lower ends of the two sealing belts extend into the conveying pipeline, and the edges of the parts, extending into the conveying pipeline, of the two sealing belts are mutually connected to form a cylinder. The dredging device further comprises a push plate located in the conveying pipeline, and the bottom ends of the two sealing belts are folded and fixedly connected with the round push plate. The push plate advances along the pipeline under the action of air pressure, the push plate is in contact with the inner wall of the pipeline all the time in the advancing process, all positions of the pipeline are fully covered, the dredging effect is good, and the dredging efficiency is high. When dredging cannot be carried out, the position of a blockage point can be determined through the metering device, and a basis is provided for pipeline replacement and replacement.

Description

Technical Field

[0001] The present invention relates to a pipeline dredging device, specifically a dredging device for tailings transportation pipelines. Background Art

[0002] In the beneficiation and smelting processes of precious metals (such as gold, silver, platinum, etc.), a large amount of tailings containing trace precious metal components are generated. To recover the valuable metals in the tailings, the tailings slurry is often transported to the reprocessing workshop by pipeline. However, due to the characteristics of high concentration, high viscosity, and easy sedimentation of the tailings slurry, the transportation pipeline is prone to blockage problems, resulting in a decrease in production efficiency, an increase in maintenance costs, and even potential safety hazards.

[0003] In response to the above problems, the Chinese utility model patent with the authorization announcement number CN218079457U discloses an underground portable slurry pipeline dredging device, which includes a wind pressure boosting device and a water conveyance device. The wind pressure boosting device and the water conveyance device are respectively connected to a straight-through pipe through a mixing tee, and the straight-through pipe is connected to a high-pressure flushing pipe for dredging by spraying high-pressure water flow. Although this method can achieve a certain dredging effect, it also has the following drawbacks: (1) This method can only dredge the blockage points near the spraying end. If the blockage point is far away, the pressure of the spraying water flow has already decreased when it reaches, so it cannot play a good dredging role.

[0004] (2) This method cannot comprehensively check the blockage situation along the pipe wall, and the acting point of the spraying may not be the actual blockage point, so the dredging effect is limited.

[0005] (3) When the pipeline cannot be dredged and a pipeline section needs to be replaced, this method cannot assist the operator in locating the blockage point. It can only remove all pipe sections, check, and then replace them, with cumbersome operations and low efficiency. Summary of the Invention

[0006] The present invention proposes a transportation pipeline dredging device for precious metal tailings treatment, and its purpose is to solve the problems of poor dredging effect and cumbersome pipeline replacement operation when the blockage cannot be dredged.

[0007] The technical solution of the present invention is as follows: A transportation pipeline dredging device for precious metal tailings treatment includes a fixing ring for fixedly installing the end of the transportation pipeline. At the left and right ends on the upper side of the fixing ring, winding devices are rotatably installed, and a sealing tape is fixedly wound on the outer surface of each winding device; The lower ends of the two sealing tapes extend into the transportation pipeline, and the edges of the parts extending into the transportation pipeline are joined together to form a cylindrical body; The dredging device further includes a push plate located inside the transportation pipeline. The bottom ends of the two sealing tapes are closed and fixedly connected to the circular push plate; A length measuring device is fixedly installed on the winding device for measuring the length of the sealing tape drawn out. A lower sealing cover is arranged inside the two sealing tapes, and the lower sealing cover is located above the push plate; an upper sealing cover is fixed to the upper end of the lower sealing cover, and a connecting sleeve is penetrated through the upper end of the upper sealing cover; an air delivery pipe is further arranged above the upper sealing cover, and the air delivery pipe is communicated with the connecting sleeve, and high-pressure gas is delivered into the cavity surrounded by the lower sealing cover, the push plate and the two sealing tapes through the connecting sleeve to push the push plate to drive the sealing tape to move deeper into the transportation pipeline.

[0008] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: Biting teeth are fixedly arranged at the adjacent edges of the two sealing tapes. When the sealing tape enters the interior of the transportation pipeline, its outer surface fits with the pipe wall, prompting the biting teeth at the edges to mesh with each other alternately to achieve a sealed connection.

[0009] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: The upper end of the connecting sleeve is used to detachably connect a push rod with elasticity.

[0010] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: Two symmetrically arranged and horizontally extending extension sleeves are fixedly arranged on the side surface of the upper sealing cover, and the extension sleeves correspond to the connection positions between the two sealing tapes; A fixing device is arranged inside the extension sleeve for locking the upper sealing cover and the lower sealing cover at any position inside the transportation pipeline; The fixing device includes a butting sleeve slidably installed in the extension sleeve, and anti-slip teeth are arranged on the outer surface of the butting sleeve for contacting the inner wall of the transportation pipeline; An air guide cylinder is fixedly installed at the inner end of the extension sleeve, a passive rod extending outward is installed on the air guide cylinder, and a transmission spring for pushing the passive rod outward is also installed inside the air guide cylinder; the outer end of the passive rod is fixedly connected with the butting sleeve.

[0011] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: A rotating plate is rotatably installed at the inner end of the extension sleeve through a shaft rod, a movable wheel is rotatably installed at the outer end of the rotating plate, and the movable wheel is located inside the butting sleeve; when the rotating plate rotates outward, the movable wheel extends to the outside of the butting sleeve; A butting rod is rotatably installed at the outer end of the rotating plate, the butting rod penetrates through the extension sleeve, and a support ring is fixedly connected to the inner end of the extension sleeve; Two symmetrically arranged arc-shaped fixing plates are fixedly installed at the inner end of the upper sealing cover, and the gap between the two fixing plates corresponds to the position of the butting rod; a driving ring is sleeved on the side of the two fixing plates, and the driving ring is fixedly installed on the outer surface of the connecting sleeve; the driving ring and the fixing plate are slidably matched in the up and down direction; two driving grooves are arranged on the outer surface of the driving ring, and the two driving grooves are matched with the inner ends of the corresponding butting rods.

[0012] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: at the inner bottom end of the upper sealing cover, two symmetrically arranged air transmission cylinders are fixedly installed, and the two air transmission cylinders correspond to the position of the extension sleeve; the air transmission cylinder and the air guide cylinder are connected by an air guide pipe; An activity ring is sleeved at the inner end of the upper sealing cover. The activity ring is located below the driving ring and rotatably sleeved on the outer surface of the connecting sleeve; two driving cylinders are installed on the activity ring, and the two driving cylinders correspond to the positions of the two air transmission cylinders; The lower end of the driving cylinder is fixedly connected with a transmission pipe, and the lower end of the transmission pipe is sleeved on the upper end of the air transmission cylinder; The upper end of the driving cylinder is also sleeved with a transfer pipe, and the upper end of the transfer pipe is fixedly connected with an air outlet sleeve, and the air outlet sleeve is fixed at the inner upper end of the upper sealing cover.

[0013] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: a sealing sleeve is fixedly installed at the inner end of the driving cylinder, a central block penetrates through the inner end of the sealing sleeve, sealing rings are fixedly installed at both the upper and lower ends of the inner side of the sealing sleeve, and the sealing rings are sleeved on the outer surface of the central block; a limiting block is arranged in the middle of the outer surface of the central block, and a gap is left between the limiting block and the sealing sleeve; stabilizing springs are arranged on both the upper and lower sides of the limiting block, and the outer ends of the two stabilizing springs are abutted against the corresponding side ends of the sealing sleeve; an air vent groove is also formed on the outer surface of the central block, and the air vent groove is arranged between the two sealing rings; when the central block moves up and down, the air vent groove slides past the sealing ring and is exposed outside the sealing sleeve.

[0014] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: a passive gear ring is fixedly sleeved on the outer surface of the transmission pipe; a driving gear is fixedly installed on the outer surface of the connecting sleeve, and the driving gear meshes with the passive gear ring; the thickness of the driving gear is greater than that of the passive gear ring to ensure that the connecting sleeve drives the driving gear to move up and down and always remains meshed with the passive gear ring; A sealing plate is fixedly installed at the inner upper end of the air transmission cylinder; multiple groups of air permeation holes are arranged on both the sealing plate and the partition plate in the middle of the transmission pipe, and the two groups of air permeation holes are arranged in a staggered manner; only when the transmission pipe rotates a specific angle can the two groups of air permeation holes communicate with each other.

[0015] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: a bottom plate is rotatably connected to the inner bottom end of the lower sealing cover, and the bottom end of the air transmission cylinder penetrates through the bottom plate and communicates with the chamber below the bottom plate; A connecting ring is fixedly installed at the inner end of the lower sealing cover, a gas guide ring is fixedly welded to the bottom end of the connecting ring, and the air transmission cylinder and the gas guide ring are communicated through a conduit; A plurality of passive cylinders are fixedly connected and communicated with the outer side surface of the air guide ring, and the plurality of passive cylinders are arranged in a ring shape; a movable plug extending outward is installed in each passive cylinder; a clamping plate is installed at the outer end of the movable plug, and a return spring for pushing the movable plug inward is further installed between the movable plug and the limiting ring inside the passive cylinder; Sealing grooves are formed on the outer surface of the lower sealing cover, and a plurality of through holes are formed at the inner ends of the sealing grooves, and the plurality of through holes are respectively matched with the clamping plates; the outer side surface of the clamping plate is used for contacting the inner side surface of an external sealing belt; A plurality of sealing strips are arranged in the sealing groove, the sealing strips are arranged in a ring shape, and adjacent sealing strips are connected by a rotating connection method; the outer surface of the sealing strip contacts the inner wall of the transportation pipeline, and after the sealing belt moves downward, the sealing strip is in close contact with the outer surface of the sealing belt and rotates automatically under the action of friction.

[0016] As a further improvement of the transportation pipeline dredging device for precious metal tailings treatment: an air outlet pipe penetrating up and down is fixedly installed on the bottom plate; the lower end of the connecting sleeve is connected to the upper end of the air outlet pipe; An air guide cover is fixedly welded inside the air outlet pipe, and a plurality of ventilation holes are formed on the outer surface of the air guide cover; a central rod passes through the middle of the air guide cover, and a partition plate is fixedly installed at the bottom end of the central rod by bolts, and the partition plate is located below the air guide cover; a sealing gasket is sleeved on the outer surface of the partition plate to realize sealing between the outer edge of the air guide cover; a spring piece is further arranged between the central rod and the air guide cover, and the spring piece is used for pushing the central rod upward to drive the partition plate to move upward to contact the bottom end of the air guide cover, so as to block the ventilation holes on the surface of the air guide cover.

[0017] Compared with the prior art, the present invention has the following positive effects: (1) The push plate of the present invention can directly act on the blockage point of the pipe wall, and during the traveling process, the push plate is in contact with the inner wall of the pipe, covering all positions along the way, with good dredging effect and high dredging efficiency, without excessive human intervention, especially suitable for complex or difficult-to-directly-contact blockage scenarios.

[0018] (2) When the pipeline cannot be dredged, the position of the blockage can be determined through the measuring device on the winding device, which can be used as a reference for replacing the pipe section, so that it is not necessary to repeatedly disassemble, inspect, improve the maintenance efficiency, effectively avoid the solidification of the blockage causing greater damage or production interruption, and reduce the maintenance time and economic losses.

[0019] (3) By adding a push rod above the connecting sleeve in the present invention, when the push plate is pushed by high-pressure air, it can assist in shortening the distance between the push plate and the bottom plate, improving the air pressure transmission efficiency in the chamber, thereby enhancing the dredging ability of deep blockages, improving the overall auxiliary conduction effect, and ensuring the smoothness of the transportation pipeline. Description of the Drawings

[0020] Figure 1 Schematic structural diagram of the present invention; Figure 2 Schematic structural diagram of the positional relationship between the fixing ring and the sealing belt; Figure 3 Schematic structural diagram of the upper sealing cover, the lower sealing cover and the sealing belt part, where the sealing belt is in a truncated state in the figure; Figure 4 Schematic structural diagram of the upper sealing cover and the push rod part; Figure 5 Schematic structural diagram of the interior of the upper sealing cover; Figure 6 Schematic structural diagram of the interior of the extension sleeve; Figure 7 Schematic structural diagram of the abutting rod and the driving groove; Figure 8 Schematic structural diagram of the interior of the movable ring; Figure 9 Schematic structural diagram of the interior of the driving cylinder; Figure 10 Explosion diagram of the conduit and the air transfer cylinder; Figure 11 Schematic structural diagram of the interior of the lower sealing cover; Figure 12 Schematic structural diagram of the interior of the passive cylinder; Figure 13 Schematic structural diagram of the interior of the air outlet pipe; Figure 14 Schematic diagram of the positional relationship between the sealing belt and the sealing groove; Figure 15 Cross-sectional schematic diagram when the edges of the two sealing belts coincide;

[0021] Reference numerals include: 1. Fixed ring; 2. Winding device; 3. Push rod; 4. Sealing belt; 5. Push plate; 11. Gas transmission pipe; 12. Connecting sleeve; 101. Upper sealing cover; 102. Lower sealing cover; 103. Sealing strip; 104. Extension sleeve; 105. Contact sleeve; 106. Air outlet sleeve; 107. Driving ring; 108. Movable wheel; 109. Air guide cylinder; 110. Transmission spring; 111. Passive rod; 112. Rotating plate; 113. Air guide pipe; 114. Contact rod; 201. Fixed plate; 202. Movable ring; 203. Air transmission cylinder; 204. Driving groove; 205. Driving gear; 206. Passive gear ring; 207. Driving cylinder; 208. Transfer pipe; 209. Stabilizing spring; 210. Central block; 211. Venting groove; 212. Transfer conduit; 213. Sealing sleeve; 214. Sealing plate; 301. Air outlet pipe; 302. Connecting ring; 303. Clamping plate; 304. Air guide ring; 305. Bottom plate; 306. Sealing groove; 307. Passive cylinder; 308. Movable plug; 309. Return spring; 310. Central rod; 311. Air guide cover; 312. Partition plate. Detailed implementation mode

[0022] The technical solution of the present invention will be described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0023] As Figures 1-4 , Figure 15 , a transportation pipeline dredging device for treating precious metal tailings, includes a fixed ring 1 for fixedly installing the end of the transportation pipeline. At the upper side of the fixed ring 1, winding devices 2 are rotatably installed at both left and right ends. A sealing belt 4 is fixedly wound around the outer surface of each winding device 2. The lower ends of the two sealing belts 4 extend into the transportation pipeline, and the edges of the parts extending into the transportation pipeline are joined to form a cylindrical body. The dredging device further includes a push plate 5 located inside the transportation pipeline. The bottom ends of the two sealing belts 4 are closed and fixedly connected to the circular push plate 5. Correspondingly, after the connecting parts of the two sealing belts 4 extend upward for a certain distance, they are separated, and the overall shape is "Y".

[0024] A length measuring device (determining the length by measuring the number of turns of the rotating cylinder in contact with the sealing belt 4) is fixedly installed on the winding device 2, which can display the length of the sealing belt 4 drawn out in real time.

[0025] The winding device 2 and the sealing belt 4 adopt a modular design, and the specifications can be flexibly configured according to the inner diameter of the pipeline to ensure the continuity of long-distance dredging operations.

[0026] Specifically, the sealing belt 4 is made of silicone rubber and has good anti-folding performance. When the sealing belt 4 is drawn out from the winding device 2, it is arc-shaped in its natural state. Adjacent edges of the two sealing belts 4 are fixedly provided with engaging teeth. When the sealing belt 4 enters the interior of the transportation pipeline, its outer surface fits against the pipe wall, causing the engaging teeth at the edges to mesh with each other in a staggered manner, thereby achieving a sealed connection (as Figure 15 shown). A magnetic object can also be added here to improve the stability and tightness of the connection.

[0027] Inside the two sealing belts 4, a lower sealing cover 102 is provided, and the lower sealing cover 102 is located above the push plate 5. The outer surface of the lower sealing cover 102 contacts the inner wall of the cylindrical body formed by the two sealing belts 4.

[0028] Specifically, the upper end edge of the lower sealing cover 102 is provided with a rounded corner to prevent the surface of the sealing belt 4 from being scratched by the sharp edge when it contacts the lower sealing cover 102.

[0029] Furthermore, the outer surface of the lower sealing cover 102 is of a tapered structure that gradually expands from top to bottom and finally fits tightly against the inner wall of the sealing belt 4. At the same time, the outer wall of the sealing belt 4 is in close contact with the inner wall of the transportation pipeline, achieving a double-sealing effect.

[0030] The upper sealing cover 101 is fixedly welded to the upper end of the lower sealing cover 102. A connecting sleeve 12 is provided through the upper end of the upper sealing cover 101, and the upper end of the connecting sleeve 12 is used to detachably connect to an elastic push rod 3. The push rod 3 can be connected in sections one by one. Each time a section of the push rod 3 is connected, the upper sealing cover 101 is pushed a certain distance into the transportation pipeline. Conversely, the upper sealing cover 101 can also be pulled out of the transportation pipeline through the push rod 3. Both the upper and lower ends of the push rod 3 are provided with matching male and female snap fasteners, which form a stable support structure after connection. The push rod 3 is made of rubber material and has a flexible steering function while providing sufficient support force.

[0031] Above the upper sealing cover 101, an air delivery pipe 11 is also provided, and the air delivery pipe 11 is connected to the connecting sleeve 12. High-pressure gas is delivered into the cavity surrounded by the lower sealing cover 102, the push plate 5, and the two sealing belts 4 through the connecting sleeve 12, pushing the push plate 5 to drive the sealing belt 4 to move deeper into the transportation pipeline.

[0032] On the side of the upper sealing cover 101, two symmetrically arranged and horizontally extending extension sleeves 104 are fixedly provided, and the extension sleeves 104 correspond to the joints between the two sealing belts 4.

[0033] A fixing device is provided inside the extension sleeve 104 for locking the upper sealing cover 101 and the lower sealing cover 102 at any position inside the transportation pipeline.

[0034] Furthermore, as Figures 4-7, the fixing device includes an abutting sleeve 105 slidably mounted in the extension sleeve 104, and the outer surface of the abutting sleeve 105 is used to contact the inner wall of the transportation pipeline. Two air guide cylinders 109 are fixedly installed at the inner end of the extension sleeve 104 through a clamp, and the two air guide cylinders 109 are interconnected through a conduit. A passive rod 111 extending outward is installed on the air guide cylinder 109, and a transmission spring 110 for pushing the passive rod 111 outward is also installed inside the air guide cylinder 109. The outer end of the passive rod 111 is fixedly connected to the abutting sleeve 105. The extension sleeve 104 and the abutting sleeve 105 cooperate to separate the overlapping sealing band 4 below when moving downward.

[0035] Furthermore, anti-slip teeth are also provided on the outer surface of the abutting sleeve 105. When the abutting sleeve 105 moves outward, as the acting force increases, the biting force between the anti-slip teeth and the inner wall of the transportation pipeline increases, thereby achieving an anti-slip effect.

[0036] Such as Figure 5 , Figure 6 , Figure 7 As shown, a rotating plate 112 is rotatably installed at the inner end of the extension sleeve 104 through a shaft rod. An activity wheel 108 is rotatably installed at the outer end of the rotating plate 112. The supporting shaft end of the activity wheel 108 passes through two round holes at the outer end of the rotating plate 112, and the activity wheel 108 is located inside the abutting sleeve 105. The rotating plate 112 and the extension sleeve 104 form an angular structure. When the rotating plate 112 rotates outward, the activity wheel 108 extends to the outside of the abutting sleeve 105. During use, since the activity wheel 108 is always located inside the transportation pipeline and the length of the rotating plate 112 is greater than that of the abutting sleeve 105, the outer surface of the activity wheel 108 continuously contacts the inner wall of the transportation pipeline.

[0037] An abutting rod 114 is rotatably installed at the outer end of the rotating plate 112. The abutting rod 114 passes through the extension sleeve 104, and the rotating connection of the abutting rod 114 is located between the two activity wheels 108. A support ring is also fixedly connected to the inner end of the extension sleeve 104.

[0038] Two symmetrically arranged arc-shaped fixing plates 201 are fixedly installed at the inner end of the upper sealing cover 101. The gap between the two fixing plates 201 corresponds to the position of the abutting rod 114. A driving ring 107 is sleeved on the side of the two fixing plates 201. The driving ring 107 is fixedly installed on the outer surface of the connecting sleeve 12. The driving ring 107 and the fixing plates 201 are slidably matched in the up and down direction and the stroke of this sliding is limited. Two driving grooves 204 are opened on the outer surface of the driving ring 107, and the two driving grooves 204 cooperate with the inner ends of the corresponding abutting rods 114.

[0039] Furthermore, the inner walls of the driving grooves 204 and the outer surfaces of the abutting rods 114 are both rounded, and lubricating grease is also applied inside the driving grooves 204.

[0040] When the driving ring 107 moves upward or downward under the action of the connecting sleeve 12, it can squeeze and push the abutting rod 114 away from the driving ring 107 by pressing against the inner side of the driving groove 204, thereby pulling the rotating plate 112 to rotate and changing the position of the movable wheel 108.

[0041] As Figure 5 、 Figures 8-10 shown, two symmetrically arranged air transmission cylinders 203 are fixedly installed at the inner bottom end of the upper sealing cover 101 through a clamp, and the two air transmission cylinders 203 correspond to the position of the extension sleeve 104. The air transmission cylinder 203 is connected to the air guide cylinder 109 through an air duct 113.

[0042] An activity ring 202 is sleeved at the inner end of the upper sealing cover 101. The activity ring 202 is located below the driving ring 107, and the activity ring 202 is rotatably sleeved on the outer surface of the connecting sleeve 12 (the intermediate connection part is not shown in the figure). When the connecting sleeve 12 rotates, it cannot drive the activity ring 202 to rotate, but the connecting sleeve 12 can drive the activity ring 202 to move up and down. Two driving cylinders 207 are installed on the activity ring 202 through a clamp, and the two driving cylinders 207 correspond to the positions of the two air transmission cylinders 203.

[0043] A sealing sleeve 213 is fixedly installed at the inner end of the driving cylinder 207. A central block 210 is inserted through the inner end of the sealing sleeve 213. Sealing rings are fixedly installed at both the upper and lower ends inside the sealing sleeve 213, and the sealing rings are sleeved on the outer surface of the central block 210. A limiting block is provided in the middle of the outer surface of the central block 210, and a gap is left between the limiting block and the sealing sleeve 213. Stable springs 209 are arranged on both the upper and lower sides of the limiting block, and the outer ends of the two stable springs 209 are abutted against the corresponding side ends of the sealing sleeve 213. An air vent groove 211 is also formed on the outer surface of the central block 210, and the air vent groove 211 is arranged between the two sealing rings. When the central block 210 moves up and down, the air vent groove 211 slides past the sealing ring and is exposed outside the sealing sleeve 213.

[0044] The lower end of the driving cylinder 207 is fixedly connected with a transmission pipe 212, and the lower end of the transmission pipe 212 is sleeved on the upper end of the air transmission cylinder 203. A passive gear ring 206 is fixedly sleeved on the outer surface of the transmission pipe 212. A driving gear 205 is fixedly installed on the outer surface of the connecting sleeve 12, and the driving gear 205 meshes with the passive gear ring 206. The thickness of the driving gear 205 is greater than the thickness of the passive gear ring 206 to ensure that the driving gear 205 always meshes with the passive gear ring 206 when the connecting sleeve 12 drives the driving gear 205 to move up and down.

[0045] A sealing plate 214 is fixedly installed on the inner side of the upper end of the air transmission cylinder 203. Multiple groups of air permeation holes are provided on the sealing plate 214 and on the partition plate in the middle of the transmission pipe 212, and the two groups of air permeation holes are arranged in a staggered manner. Only when the transmission pipe 212 rotates a specific angle can the two groups of air permeation holes communicate with each other.

[0046] A limiting block is fixedly installed on the outer surface of the connecting sleeve 12, and a limiting groove is fixedly installed at the inner end of the upper sealing cover 101. The limiting block is inserted into the limiting groove to limit the rotation area of the connecting sleeve 12. However, the limiting groove does not affect the up-and-down movement of the connecting sleeve 12.

[0047] The upper end of the driving cylinder 207 is also sleeved with a transfer pipe 208. The upper end of the transfer pipe 208 is fixedly connected with an air outlet sleeve 106, and the air outlet sleeve 106 is fixedly installed at the upper inner side of the upper sealing cover 101.

[0048] Further, as Figure 4 、 Figure 5 、 Figures 11-15 , a bottom plate 305 is rotatably connected to the inner bottom end of the lower sealing cover 102. A sealing rubber ring is provided between the outer wall of the bottom plate 305 and the inner wall of the lower sealing cover 102 to increase airtightness. The bottom end of the air transmission cylinder 203 penetrates through the bottom plate 305 and communicates with the chamber below the bottom plate 305.

[0049] A connecting ring 302 is fixedly installed at the inner end of the lower sealing cover 102. A guide air ring 304 is fixedly welded to the bottom end of the connecting ring 302. The air transmission cylinder 203 and the guide air ring 304 are connected through a conduit, and the conduit is made of rubber. A plurality of passive cylinders 307 are fixedly communicated with the outer side surface of the guide air ring 304, and the plurality of passive cylinders 307 are arranged in a ring shape. An activity plug 308 extending outwards is installed in the passive cylinder 307. A sealing ring is provided between the outer surface of the activity plug 308 and the inner wall of the passive cylinder 307. A clamping plate 303 is installed at the outer end of the activity plug 308, and a return spring 309 for pushing the activity plug 308 inwards is also installed between the activity plug 308 and the limiting ring inside the passive cylinder 307.

[0050] A sealing groove 306 is formed on the outer surface of the lower sealing cover 102, and a plurality of through holes are formed at the inner end of the sealing groove 306, and the plurality of through holes are respectively matched with the clamping plates 303. The outer side surface of the clamping plate 303 is used for contacting with the inner side surface of the external sealing strip 4.

[0051] Further, a plurality of sealing strips 103 are arranged in the sealing groove 306, and the sealing strips 103 are arranged in a ring shape. Adjacent sealing strips 103 are connected by a rotatable connection method. The sealing strip 4 contacts with the sealing groove 306 under the constraint of the sealing strips 103 to further increase airtightness. The outer surface of the sealing strip 103 contacts with the inner wall of the transportation pipeline. After the sealing strip 4 moves downwards, the sealing strip 103 is in close contact with the outer surface of the sealing strip 4 and rotates automatically under the action of friction.

[0052] An air outlet pipe 301 penetrating up and down is fixedly installed on the bottom plate 305. The lower end of the connecting sleeve 12 is connected to the upper end of the air outlet pipe 301.

[0053] Inside the air outlet pipe 301, a gas guide cover 311 is fixedly welded. A plurality of ventilation holes are formed on the outer surface of the gas guide cover 311. A central rod 310 passes through the middle of the gas guide cover 311. At the bottom end of the central rod 310, a partition plate 312 is fixedly installed by bolts, and the partition plate 312 is located below the gas guide cover 311. A sealing gasket is sleeved on the outer surface of the partition plate 312 to achieve sealing between the outer edge of the gas guide cover 311. A spring piece is also provided between the central rod 310 and the gas guide cover 311. The spring piece is used to push the central rod 310 upward, drive the partition plate 312 to move upward and then contact the bottom end of the gas guide cover 311, so as to block the ventilation holes on the surface of the gas guide cover 311. Therefore, air can only enter the area below the bottom plate 305 from above the gas guide cover 311.

[0054] The working principle of this device is: The transportation pipeline adopts a series structure of multiple sections of pipelines to achieve the function of long-distance transportation. When the transportation pipeline is blocked, the fixing ring 1 is fixed at the entrance of the transportation pipeline, and then the push plate 5 is inserted into the inside of the transportation pipeline. Since the sealing belt 4 is connected to the push plate 5, as the sealing belt 4 continuously enters, the two sealing belts 4 are gradually joined from bottom to top. Then, the lower sealing cover 102 is placed into the transportation pipeline. Under the limitation of the lower sealing cover 102, the joined area of the sealing belt 4 is fixed, and the two sealing belts 4 can be prevented from separating.

[0055] Then, the chamber between the bottom plate 305 and the push plate 5 is filled with high-pressure gas through the air delivery pipe 11, so that the air in the chamber between the bottom plate 305 and the push plate 5 increases, and the push plate 5 continuously moves deeper. At the same time, there is a certain distance between the extension sleeve 104 and the lower sealing cover 102. Therefore, when the sealing belt 4 reaches the position of the lower sealing cover 102, they have already overlapped with each other. Air also enters the inside of the air guide cylinder 109 through the air transfer cylinder 203 and the air guide pipe 113, and pushes the abutting sleeve 105 to move through the passive rod 111, so that it is stably fixed inside the transportation pipeline.

[0056] With the continuous injection of high-pressure air, the push plate 5 moves continuously, pushing the blocked substances inside the transportation pipeline, thus achieving the effect of auxiliary conduction. As the blocked object gets deeper, the chamber between the push plate 5 and the bottom plate 305 becomes larger, which will lead to a decrease in the air pressure transmission efficiency. Therefore, it is necessary to shorten the distance between the bottom plate 305 and the push plate 5. Specifically, rotate the push rod 3 to drive the connecting sleeve 12 to rotate, drive the driving gear 205 to drive the passive gear ring 206 to rotate, and then drive the transmission pipe 212 to rotate, so that the two groups of air-permeable holes of the transmission pipe 212 and the sealing plate 214 are interconnected and the internal and external air pressures are connected. Then install the push rod 3 above the connecting sleeve 12 and gradually continue to connect. Push the upper sealing cover 101 downward through the push rod 3. The connecting sleeve 12 is forced to move downward, and through the driving ring 107, two abutting rods 114 are pushed to move away from the connecting sleeve 12, so that the movable wheel 108 fits against the inner wall of the transportation pipeline to reduce friction and make the process of pushing the upper sealing cover 101 downward smoother. The two sealing belts 4 are separated as the extension sleeve 104 moves downward. After the distance between the bottom plate 305 and the push plate 5 is reduced, turn the connecting sleeve 12 back to its initial position so that the two groups of air-permeable holes of the transmission pipe 212 and the sealing plate 214 are staggered again. Then, send high-pressure gas into the interior through the air delivery pipe 11 again, so that the push plate 5 can dredge the blocked object deeper.

[0057] After the dredging is completed, stop providing high-pressure gas. Lift the upper sealing cover 101 and the lower sealing cover 102 through the push rod 3, and recycle the sealing belt 4 through the winding device 2.

[0058] If the blocked object cannot be dredged, it is necessary to check the position of the blocked object by looking at the meter on the winding device 2, then remove the section of the transportation pipeline at the blocked position and replace it with a new section of the transportation pipeline to avoid losses caused by the solidification of the blocked object.

[0059] It should be noted that for those skilled in the art, obviously, the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A transportation pipeline dredging device for precious metal tailings treatment, characterized in that: It includes a fixing ring (1) for fixedly installing the end of a transportation pipeline. At both left and right ends of the upper side of the fixing ring (1), winding devices (2) are rotatably installed. A sealing tape (4) is fixedly wound around the outer surface of each winding device (2); The lower ends of the two sealing tapes (4) extend into the transportation pipeline, and the edges of the parts extending into the transportation pipeline are joined to form a cylindrical body; The dredging device further includes a push plate (5) located inside the transportation pipeline. The bottom ends of the two sealing tapes (4) are joined together and are both fixedly connected to the circular push plate (5); A length measuring device is fixedly installed on the winding device (2) for measuring the length of the sealing tape (4) drawn out; Inside the two sealing tapes (4), there is a lower sealing cover (102), and the lower sealing cover (102) is located above the push plate (5); an upper sealing cover (101) is fixed to the upper end of the lower sealing cover (102), and a connecting sleeve (12) passes through the upper end of the upper sealing cover (101); an air delivery pipe (11) is also arranged above the upper sealing cover (101), and the air delivery pipe (11) is communicated with the connecting sleeve (12). High-pressure gas is delivered into the cavity formed by the lower sealing cover (102), the push plate (5), and the two sealing tapes (4) through the connecting sleeve (12) to push the push plate (5) to drive the sealing tape (4) to move deeper into the transportation pipeline.

2. The transportation pipeline dredging device for treating precious metal tailings according to claim 1, characterized in that: At the adjacent edges of the two sealing tapes (4), engaging teeth are fixedly provided. When the sealing tape (4) enters the inside of the transportation pipeline, its outer surface fits with the pipe wall, causing the engaging teeth at the edges to mesh with each other in an interlaced manner to achieve a sealed connection.

3. The transportation pipeline dredging device for precious metal tailings treatment according to claim 1, wherein: The upper end of the connecting sleeve (12) is used to detachably connect to an elastic push rod (3).

4. The transportation pipeline dredging device for precious metal tailings treatment according to claim 1, wherein: On the side surface of the upper sealing cover (101), two symmetrically arranged and horizontally extending extension sleeves (104) are fixedly provided, and the extension sleeves (104) correspond to the connection part between the two sealing tapes (4); Inside the extension sleeve (104), there is a fixing device for locking the upper sealing cover (101) and the lower sealing cover (102) at any position inside the transportation pipeline; The fixing device includes an abutting sleeve (105) slidably installed in the extension sleeve (104). Anti-slip teeth are provided on the outer surface of the abutting sleeve (105) for contacting the inner wall of the transportation pipeline; At the inner end of the extension sleeve (104), a guide air cylinder (109) is fixedly installed. A passive rod (111) extending outward is installed on the guide air cylinder (109), and a transmission spring (110) for pushing the passive rod (111) outward is also installed inside the guide air cylinder (109); the outer end of the passive rod (111) is fixedly connected to the abutting sleeve (105).

5. The transportation pipeline dredging device for treating precious metal tailings according to claim 4, wherein: At the inner end of the extension sleeve (104), a rotating plate (112) is rotatably installed through a shaft rod. An activity wheel (108) is rotatably installed at the outer end of the rotating plate (112), and the activity wheel (108) is located inside the abutting sleeve (105); when the rotating plate (112) rotates outward, the activity wheel (108) extends to the outside of the abutting sleeve (105); At the outer end of the rotating plate (112), an abutting rod (114) is rotatably installed. The abutting rod (114) passes through the extension sleeve (104), and a support ring is fixedly connected to the inner end of the extension sleeve (104); Two symmetrically arranged arc-shaped fixing plates (201) are fixedly installed at the inner end of the upper sealing cover (101). The gap between the two fixing plates (201) corresponds to the position of the abutting rod (114); a driving ring (107) is sleeved on the sides of the two fixing plates (201), and the driving ring (107) is fixedly installed on the outer surface of the connecting sleeve (12); the driving ring (107) and the fixing plate (201) are slidably matched in the up and down direction; two driving grooves (204) are formed on the outer surface of the driving ring (107), and the inner ends of the two driving grooves (204) are matched with the inner ends of the corresponding abutting rods (114).

6. The transportation pipeline dredging device for precious metal tailings treatment according to claim 4, characterized in that: Two symmetrically arranged air transmission cylinders (203) are fixedly installed at the inner bottom end of the upper sealing cover (101). The two air transmission cylinders (203) correspond to the position of the extension sleeve (104); the air transmission cylinder (203) and the air guide cylinder (109) are connected by an air duct (113). A movable ring (202) is sleeved at the inner end of the upper sealing cover (101). The movable ring (202) is located below the driving ring (107), and the movable ring (202) is rotatably sleeved on the outer surface of the connecting sleeve (12); two driving cylinders (207) are installed on the movable ring (202), and the two driving cylinders (207) correspond to the positions of the two air transmission cylinders (203). The lower end of the driving cylinder (207) is fixedly connected with a transmission pipe (212), and the lower end of the transmission pipe (212) is sleeved on the upper end of the air transmission cylinder (203). The upper end of the driving cylinder (207) is also sleeved with a transfer pipe (208). The upper end of the transfer pipe (208) is fixedly connected with an air outlet sleeve (106), and the air outlet sleeve (106) is fixed at the inner upper end of the upper sealing cover (101).

7. The transportation pipeline dredging device for precious metal tailings treatment according to claim 6, wherein: A sealing sleeve (213) is fixedly installed at the inner end of the driving cylinder (207). A central block (210) passes through the inner end of the sealing sleeve (213). Sealing rings are fixedly installed at the upper and lower ends of the inner side of the sealing sleeve (213), and the sealing rings are sleeved on the outer surface of the central block (210); a limiting block is arranged in the middle of the outer surface of the central block (210), and a gap is left between the limiting block and the sealing sleeve (213); stabilizing springs (209) are arranged on both the upper and lower sides of the limiting block, and the outer ends of the two stabilizing springs (209) are abutted against the corresponding ends of the sealing sleeve (213); an air vent groove (211) is also formed on the outer surface of the central block (210), and the air vent groove (211) is arranged between the two sealing rings; when the central block (210) moves up and down, the air vent groove (211) slides past the sealing ring and is exposed outside the sealing sleeve (213).

8. The transportation pipeline dredging device for precious metal tailings treatment according to claim 6, characterized in that: A passive gear ring (206) is fixedly sleeved on the outer surface of the transmission pipe (212); a driving gear (205) is fixedly installed on the outer surface of the connecting sleeve (12), and the driving gear (205) meshes with the passive gear ring (206); the thickness of the driving gear (205) is greater than the thickness of the passive gear ring (206) to ensure that the connecting sleeve (12) drives the driving gear (205) to move up and down and always meshes with the passive gear ring (206). A sealing plate (214) is fixedly installed inside the upper end of the air transmission cylinder (203); a plurality of air permeable holes are provided on the sealing plate (214) and on the partition plate in the middle of the air transmission pipe (212), and the two groups of air permeable holes are arranged staggeredly; only when the air transmission pipe (212) rotates a specific angle can the two groups of air permeable holes communicate with each other.

9. The transportation pipeline dredging device for precious metal tailings treatment according to claim 6, characterized in that: A bottom plate (305) is rotatably connected to the inner bottom end of the lower sealing cover (102), and the bottom end of the air transmission cylinder (203) penetrates through the bottom plate (305) and communicates with the chamber below the bottom plate (305); A connecting ring (302) is fixedly installed at the inner end of the lower sealing cover (102), a guide air ring (304) is fixedly welded to the bottom end of the connecting ring (302), and the air transmission cylinder (203) is communicated with the guide air ring (304) through a conduit; A plurality of passive cylinders (307) are fixedly communicated with the outer side surface of the guide air ring (304), and the plurality of passive cylinders (307) are arranged in a ring shape; a movable plug (308) extending outward is installed inside the passive cylinder (307); a clamping plate (303) is installed at the outer end of the movable plug (308), and a return spring (309) for pushing the movable plug (308) inward is also installed between the movable plug (308) and the limiting ring inside the passive cylinder (307); A sealing groove (306) is formed on the outer surface of the lower sealing cover (102), and a plurality of through holes are formed at the inner end of the sealing groove (306), and the plurality of through holes are respectively matched with the clamping plates (303); the outer side surface of the clamping plate (303) is used for contacting the inner side surface of the external sealing belt (4); A plurality of sealing strips (103) are arranged in the sealing groove (306), the sealing strips (103) are arranged in a ring shape, and adjacent sealing strips (103) are connected by a rotatable connection method; the outer surface of the sealing strip (103) contacts the inner wall of the transportation pipeline, and after the sealing belt (4) moves downward, the sealing strip (103) is in close contact with the outer surface of the sealing belt (4) and rotates automatically under the action of friction.

10. The transportation pipeline dredging device for precious metal tailings treatment according to any one of claims 1 to 9, characterized in that: An air outlet pipe (301) penetrating up and down is fixedly installed on the bottom plate (305); the lower end of the connecting sleeve (12) is connected to the upper end of the air outlet pipe (301); A guide air cover (311) is fixedly welded inside the air outlet pipe (301), and a plurality of ventilation holes are formed on the outer surface of the guide air cover (311); a central rod (310) penetrates through the middle of the guide air cover (311), a partition plate (312) is fixedly installed at the bottom end of the central rod (310) through a bolt, and the partition plate (312) is located below the guide air cover (311); a sealing gasket is sleeved on the outer surface of the partition plate (312) to realize the seal between the partition plate (312) and the outer edge of the guide air cover (311); a spring piece is also arranged between the central rod (310) and the guide air cover (311), and the spring piece is used for pushing the central rod (310) upward, driving the partition plate (312) to move upward and contact the bottom end of the guide air cover (311), so as to block the ventilation holes on the surface of the guide air cover (311).

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