Slurry circulating device for trenchless horizontal directional drilling

Abstract

The invention relates to the technical field of slurry circulation, and discloses a non-excavation horizontal directional drilling slurry circulation device which comprises a base, a storage barrel is arranged on the upper side of the base, a filtering mechanism comprises a box body, the box body communicates with the top of the base, a filtering plate is fixedly connected to the middle of the inner side of the box body, and the filtering plate is fixedly connected to the bottom of the box body. Side filter screens are arranged on the left side and the right side in the box body, baffles are fixedly connected to the left end and the right end of the lower middle portion of the inner side of the box body, a protective shell is fixedly connected to the upper middle portion of the inner side of each filter plate, a transmission rod is rotatably connected to the middle of the top end of each protective shell, and first scraping plates are fixedly connected to the bottoms of the front side and the rear side of each transmission rod; the front end and the rear end of the first scraping plate are rotationally connected with second scraping plates. The mud is filtered through the filtering plate, the first scraping plate can scrape impurities on the filtering plate, the impurities fall onto the baffle, the filtering plate cannot be blocked due to impurity accumulation, and the impurities can be conveniently collected and cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of mud circulation, in particular to a mud circulation device for trenchless horizontal directional drilling. Background Art

[0002] Trenchless horizontal directional drilling is an advanced underground pipeline laying construction technology. It can complete the laying, replacement and repair of various pipelines in complex underground environments without large-scale excavation of the ground, greatly reducing the impact on traffic, surrounding buildings and the environment, effectively reducing construction costs and improving construction efficiency.

[0003] Trenchless horizontal directional drilling technology has developed rapidly around the world because it can lay various underground public facilities without excavating the surface. However, when horizontal directional drilling rigs are digging and expanding underground passages, the drill bit will generate high temperature due to friction with soil and rocks. Mud and water are needed to lubricate and cool the drill bit, thereby improving excavation efficiency and extending the life of the drill bit.

[0004] At present, the trenchless horizontal directional drilling mud circulation device on the market is mainly composed of a mud pump, a sedimentation tank and a circulation pipeline. When in use, the mud and sediment can be stored in the recovery tank, and the mud pump can realize the circulation of the horizontal directional drilling mud through the circulation pipeline. However, when the device is in use, the mud will carry sand and gravel after passing through the horizontal directional drilling. After the sand and gravel enter the circulation pump and the pipeline, it will cause blockage, causing damage to the circulation pump and the pipeline. To solve the above problems, the prior art often collects impurities in the mud by adding a filter net inside the recovery tank. However, in actual use of the device, impurities in the mud will accumulate on the filter net, causing the filter net to be blocked, and it is inconvenient for the staff to collect the impurities, which reduces the practicability of the device and cannot meet the needs of users. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a mud circulation device for trenchless horizontal directional drilling, which solves the problem that mud may be blocked during filtering and impurities may not be easily collected.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a mud circulation device for trenchless horizontal directional drilling, comprising a base, a storage barrel is arranged on the upper side of the base, a horizontal directional drilling rig is arranged on the left side of the base, a filtering mechanism is arranged on the upper side of the storage barrel, the filtering mechanism is used to facilitate filtering of the mud, a mixing mechanism is arranged on the top of the base, the mixing mechanism is used to facilitate mixing of the mud, a control mechanism is arranged on the middle and upper part of the right side of the storage barrel, the control mechanism is used to facilitate adding a reagent to the mud; The filtering mechanism includes a box body, which is connected to the top of the base, a filter plate is fixedly connected to the inner middle part of the box body, side filters are arranged on the left and right sides of the inner part of the box body, baffles are fixedly connected to the left and right ends of the inner middle and lower part of the box body, a protective shell is fixedly connected to the inner middle and upper part of the filter plate, a transmission rod is rotatably connected to the middle part of the top end of the protective shell, the front and rear bottom parts of the transmission rod are fixedly connected to the first scraper, the front and rear ends of the first scraper are rotatably connected to the second scraper, a driving assembly is arranged on the inner side of the protective shell, a pushing assembly is arranged on the left and right sides of the first scraper, and a moving assembly is arranged on the inner middle and lower part of the box body.

[0007] Preferably, the mixing mechanism includes a shell, the shell is fixedly connected to the top of the base, the top of the shell is fixedly connected to the storage barrel, the inner bottom end of the shell is rotatably connected with a transmission square shaft, the outer side of the transmission square shaft is slidably connected with a movable shaft, the outer middle and lower part of the outer side of the movable shaft is rotatably connected with a connecting block, the inner middle part of the shell is slidably connected with a movable plate, the front side of the connecting block is fixedly connected to the movable plate, the front side of the movable plate is provided with a groove, the inner front side of the shell is rotatably connected with a first rotating rod, the rear end of the first rotating rod is fixedly connected with a support plate, the rear side of the support plate is fixedly connected with a connecting column, the connecting column is slidably connected to the groove, the top end of the movable shaft passes through the storage barrel, a plurality of stirring blades are fixedly connected at equal distances around the outer side of the movable shaft, and a transmission assembly is provided inside the shell.

[0008] Preferably, the control mechanism includes a feed pipe, which is connected to the upper middle part of the right side of the storage barrel, a metering cylinder is arranged on the upper side of the feed pipe, the top of the feed pipe is connected to a concave disk, the inner bottom end of the concave disk is rotatably connected to a plurality of valve bodies, one side of the plurality of valve bodies is rotatably connected to a pull plate, one side of the top of the plurality of pull plates is rotatably connected to a rotating shaft, the top of the concave disk is rotatably connected to a movable ring, the bottoms of the plurality of movable rings are respectively fixedly connected to the corresponding rotating shafts, the inner side of the movable ring is fixedly connected to a connecting pipe, and the top of the connecting pipe is connected to the metering cylinder.

[0009] Preferably, the driving assembly includes a motor, which is fixedly connected to the upper and middle part of the rear side of the casing, the output end of the motor passes through the casing and the protective shell in sequence and is fixedly connected to a first bevel gear, the top end of the transmission rod passes through the protective shell and is fixedly connected to a second bevel gear, and the second bevel gear is meshingly connected to the first bevel gear.

[0010] Preferably, the pushing assembly includes a hollow tube, and the two hollow tubes are respectively rotatably connected to the left and right sides of the first scraper, and the inner adjacent ends of the two hollow tubes are fixedly connected with springs, and the ends away from the two springs are fixedly connected with sliding rods, and the two sliding rods are respectively rotatably connected to the corresponding second scrapers.

[0011] Preferably, the movable assembly includes a first mounting seat, two of the first mounting seats are respectively fixedly connected to adjacent sides of the two side filters, the adjacent sides of the two first mounting seats are rotatably connected to a connecting rod, the adjacent ends of the two connecting rods are rotatably connected to the same second mounting seat, the rear side of the second mounting seat is fixedly connected to a lever, the rear end of the lever passes through a box body, the front and rear sides of the interior of the box body are fixedly connected to slide rails, and the front and rear sides of the two side filters are respectively slidably connected to the corresponding slide rails.

[0012] Preferably, the transmission assembly includes a motor and a transmission belt, the motor is fixedly connected to the front bottom of the shell, the output end of the motor passes through the shell and is fixedly connected to the second rotating rod, the rear end of the second rotating rod is fixedly connected to the third bevel gear, the lower middle part of the outer side of the transmission square shaft is fixedly connected to the fourth bevel gear, the fourth bevel gear is meshingly connected to the third bevel gear, the outer sides of the second rotating rod and the first rotating rod are fixedly connected to pulleys, and the two pulleys are connected by transmission belt transmission.

[0013] Preferably, the filtering mechanism further comprises a box door, wherein the two box doors are respectively arranged on the left and right sides of the box body, and the front ends of the two box doors on the opposite sides are fixedly connected with hinges, and the two box doors are rotatably connected to the box body through corresponding hinges.

[0014] Preferably, the control mechanism further comprises a handle, the handle is fixedly connected to the top right side of the movable ring, an observation window is provided on the front side of the quantitative cylinder, and a top cover is threadedly connected to the top of the quantitative cylinder.

[0015] Preferably, a mud pump is fixedly connected to the left side of the top of the base, the left side of the mud pump is connected to the horizontal directional drilling rig, the top of the mud pump is connected to a discharge pipe, the right end of the discharge pipe is connected to the storage barrel, the top of the box is connected to a return pipe, and the left end of the return pipe is connected to the horizontal directional drilling rig.

[0016] The present invention provides a mud circulation device for trenchless horizontal directional drilling. It has the following beneficial effects: 1. The present invention filters the mud through the filter plate, and impurities will accumulate on the filter plate. The driving assembly drives the transmission rod to rotate, thereby driving the first scraper to scrape the impurities on the filter plate, so that the impurities fall onto the top of the baffle, so that the filter plate will not be blocked due to the accumulation of impurities, and the second mounting seat is pushed forward by the lever, and the connecting rod will push the first mounting seats on both sides to move to both sides, and the side filter can push the impurities above the baffle out of the box, so that the impurities can be collected and cleaned, thereby improving the practicality of the device and meeting the needs of users.

[0017] 2. The present invention drives the second rotating rod to rotate through a motor, and drives the transmission square shaft to rotate through the meshing transmission of the third bevel gear and the fourth bevel gear, thereby driving the movable shaft to rotate, and the second rotating rod can drive the first rotating rod to rotate through the pulley and the transmission belt, and the support plate will drive the connecting column to perform circular motion, thereby pushing the movable plate to move up and down through the groove, and the connecting block will drive the movable shaft to move, and the movable shaft will drive the stirring blade to rotate up and down, so that the mud inside the storage barrel can be mixed, so that the mud will not settle, thereby improving the convenience of the device.

[0018] 3. The present invention injects chemicals into the metering cylinder and rotates the movable ring. The movable ring can pull the pull plate to move through the rotating shaft, and the pull plate will drive the valve body to rotate. When the valve body rotates, the size of the flow channel inside the connecting pipe can be controlled, thereby controlling the feeding speed of the chemical. During the mud circulation process, chemicals can be automatically added to the mud, reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 for Figure 1 A in the enlarged view; Figure 3 It is a front view of the present invention; Figure 4 It is a partial structural cross-sectional view of the filtering mechanism of the present invention; Figure 5 It is a cross-sectional view of the hollow tube structure of the present invention; Figure 6 It is a cross-sectional view of the box structure of the present invention; Figure 7 It is a partial structural cross-sectional view of the mixing mechanism of the present invention; Figure 8 It is a partial structural exploded diagram of the mixing mechanism of the present invention; Fig. 9 It is a partial structural breakdown diagram of the control mechanism of the present invention.

[0020] Among them, 1. base; 2. filter mechanism; 201. box; 202. filter plate; 203. side filter; 204. baffle; 205. transmission rod; 206. first scraper; 207. second scraper; 208. protective shell; 209. motor; 210. first bevel gear; 211. second bevel gear; 212. hollow tube; 213. spring; 214. slide bar; 215. first mounting seat; 216. connecting rod; 217. second mounting seat; 218. lever; 219. slide rail; 220. box door; 221. hinge; 3. mixing mechanism; 301. shell; 302. transmission square shaft; 303. movable shaft; 304. connecting block; 3 05. movable plate; 306. groove; 307. first rotating rod; 308. supporting plate; 309. connecting column; 310. stirring blade; 311. motor; 312. second rotating rod; 313. third bevel gear; 314. fourth bevel gear; 315. pulley; 316. transmission belt; 4. control mechanism; 401. feed pipe; 402. metering cylinder; 403. concave plate; 404. valve body; 405. pull plate; 406. rotating shaft; 407. movable ring; 408. connecting pipe; 409. handle; 410. observation window; 411. top cover; 5. storage barrel; 6. horizontal directional drilling rig; 7. return pipe; 8. mud pump; 9. discharge pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Reference Figure 4 , Figure 5 and Figure 6 The embodiment of the present invention provides a mud circulation device for trenchless horizontal directional drilling, comprising a base 1, a storage barrel 5 is arranged on the upper side of the base 1, a horizontal directional drilling machine 6 is arranged on the left side of the base 1, a filtering mechanism 2 is arranged on the upper side of the storage barrel 5, the filtering mechanism 2 is used to facilitate filtering of the mud, a mixing mechanism 3 is arranged on the top of the base 1, the mixing mechanism 3 is used to facilitate mixing of the mud, and a control mechanism 4 is arranged on the middle and upper part of the right side of the storage barrel 5, the control mechanism 4 is used to facilitate adding a reagent to the mud; The filtering mechanism 2 includes a box body 201, which is connected to the top of the base 1. A filter plate 202 is fixedly connected to the inner middle part of the box body 201, and the filter plate 202 can filter the mud. Side filter screens 203 are arranged on the left and right sides of the inner middle and lower parts of the box body 201. Baffles 204 are fixedly connected to the left and right ends of the inner middle and lower parts of the box body 201. A protective shell 208 is fixedly connected to the inner middle and upper parts of the filter plate 202. A transmission rod 205 is rotatably connected to the middle part of the top of the protective shell 208. The front and rear bottoms of the transmission rod 205 are fixedly connected to the first scraper 206. The transmission rod 205 will drive the first scraper 206 to rotate. The front and rear ends of the first scraper 206 are both rotatably connected. A second scraper 207 is connected, and the second scraper 207 makes the scraping work without dead angles. A driving component is arranged on the inner side of the protective shell 208, and a pushing component is arranged on the left and right sides of the first scraper 206. A moving component is arranged on the middle and lower part of the inner side of the box body 201, and the driving component includes a motor 209, and the motor 209 is fixedly connected to the middle and upper part of the rear side of the box body 201. The output end of the motor 209 passes through the box body 201 and the protective shell 208 in sequence and is fixedly connected to the first bevel gear 210. The motor 209 drives the first bevel gear 210 to rotate, and the top end of the transmission rod 205 passes through the protective shell 208 and is fixedly connected to the second bevel gear 211. The second bevel gear 211 and the first bevel gear The wheels 210 are meshed and connected. When the first bevel gear 210 rotates, the second bevel gear 211 will drive the transmission rod 205 to rotate. The pushing component includes a hollow tube 212. The two hollow tubes 212 are respectively rotatably connected to the left and right sides of the first scraper 206. The inner adjacent ends of the two hollow tubes 212 are fixedly connected with springs 213. The ends of the two springs 213 that are far away are fixedly connected with sliding rods 214. The two sliding rods 214 are respectively rotatably connected to the corresponding second scrapers 207. The springs 213 can push the second scrapers 207 to rotate through the sliding rods 214. The moving component includes a first mounting seat 215. The two first mounting seats 215 are respectively fixedly connected to the two side filters 203 The first mounting seat 215 drives the side filter 203 to move, and the adjacent sides of the two first mounting seats 215 are rotatably connected with the connecting rod 216. The adjacent ends of the two connecting rods 216 are rotatably connected with the same second mounting seat 217. The second mounting seat 217 pushes the first mounting seat 215 to move through the connecting rod 216. The rear side of the second mounting seat 217 is fixedly connected with a lever 218. The rear end of the lever 218 penetrates the box body 201. The front and rear sides of the box body 201 are fixedly connected with slide rails 219. The front and rear sides of the two side filters 203 are respectively slidably connected with the corresponding slide rails 219, and the side filter 203 can move on the slide rails 219. In the present invention, when the device is used, the recovered mud will enter the box 201, and the filter plate 202 can filter the mud. The mud can pass through the filter plate 202 and flow into the storage barrel 5. At this time, the filter plate 202 will intercept impurities in the mud. At this time, the motor 209 is started, and then the first bevel gear 210 starts to rotate. Since the second bevel gear 211 is engaged with the first bevel gear 210, the second bevel gear 211 will also rotate accordingly, and drive the transmission rod 205 to rotate, and then drive the first scraper 206 to rotate. The first scraper 206 can scrape off the impurities accumulated on the filter plate 202, and the impurities will fall above the baffle 204, and in this process, The spring 213 will apply pressure to push the sliding rod 214 to move, thereby driving the second scraper 207 to rotate, so that there are no dead corners in the scraping work, and the filter plate 202 will not be blocked due to the accumulation of impurities. In addition, when it is necessary to clean the impurities accumulated above the baffle 204, push the lever 218 forward, and the movement of the lever 218 will drive the second mounting seat 217 to move forward. Through the action of the connecting rod 216, the first mounting seats 215 on both sides are moved to both sides respectively, and the side filter 203 can push the impurities above the baffle 204 out of the box body 201, thereby facilitating the cleaning of impurities, improving the practicality of the device, and meeting the needs of users.

[0023] Reference Figure 3 , Figure 7 and Figure 8The mixing mechanism 3 includes a shell 301, which is fixedly connected to the top of the base 1, and the top of the shell 301 is fixedly connected to the storage barrel 5. The inner bottom end of the shell 301 is rotatably connected to a transmission square shaft 302, and the outer side of the transmission square shaft 302 is slidably connected to a movable shaft 303, and the transmission square shaft 302 can drive the movable shaft 303 to rotate. The outer middle and lower part of the movable shaft 303 is rotatably connected to a connecting block 304, and the connecting block 304 will drive the movable shaft 303 to rotate. The inner middle part of the shell 301 is slidably connected to a movable plate 305, and the connecting block 304 The front side is fixedly connected to the movable plate 305, and the movable plate 305 will drive the connecting block 304 to move. A groove 306 is provided on the front side of the movable plate 305. The front side of the inner part of the shell 301 is rotatably connected to the first rotating rod 307. The rear end of the first rotating rod 307 is fixedly connected to the supporting disk 308. The first rotating rod 307 will drive the supporting disk 308 to rotate. The rear side of the supporting disk 308 is fixedly connected to a connecting column 309. The connecting column 309 is slidably connected to the groove 306. The connecting column 309 can push the movable plate 305 to move through the groove 306. The movable shaft 30 The top of the movable shaft 303 passes through the storage barrel 5, and multiple stirring blades 310 are fixedly connected to the outer side of the movable shaft 303 at equal intervals. The movable shaft 303 can drive the stirring blades 310 to move and rotate. A transmission component is arranged inside the shell 301, and the transmission component includes a motor 311 and a transmission belt 316. The motor 311 is fixedly connected to the front bottom of the shell 301. The output end of the motor 311 passes through the shell 301 and is fixedly connected to a second rotating rod 312. The motor 311 can drive the second rotating rod 312 to rotate. The rear end of the second rotating rod 312 is fixedly connected to a third cone Gear 313, a fourth bevel gear 314 is fixedly connected to the middle and lower part of the outer side of the transmission square shaft 302, and the fourth bevel gear 314 is meshed with the third bevel gear 313. When the third bevel gear 313 rotates, the fourth bevel gear 314 will drive the transmission square shaft 302 to rotate. The outer sides of the second rotating rod 312 and the first rotating rod 307 are fixedly connected with pulleys 315. The two pulleys 315 are connected through a transmission belt 316. The second rotating rod 312 can drive the first rotating rod 307 to rotate through the transmission effect of the pulley 315 and the transmission belt 316; In the present invention, when the mud is stored, the motor 311 drives the third bevel gear 313 to start rotating through the driving of the second rotating rod 312. Since the fourth bevel gear 314 is meshed with the third bevel gear 313, the fourth bevel gear 314 will also rotate accordingly, and drive the transmission square shaft 302 to start rotating, thereby driving the movable shaft 303 to rotate. The second rotating rod 312 can drive the first rotating rod 307 to rotate through the transmission effect of the pulley 315 and the transmission belt 316. The rotation of the first rotating rod 307 will cause the support plate 308 to rotate. The connecting column 309 at the rear side of the support disk 308 performs a circular motion during the rotation process. When the connecting column 309 rotates, the groove 306 can push the movable plate 305 to move up and down. The movable plate 305 is connected to the movable shaft 303 through the connecting block 304, so that the movable shaft 303 can also move up and down. The movable shaft 303 can drive the stirring blade 310 to perform a rotational motion to move up and down, which can ensure that the mud inside the storage barrel 5 is fully mixed, thereby avoiding the sedimentation of the mud and improving the convenience of the device.

[0024] Reference Figure 1 , Figure 2 and Fig. 9 The control mechanism 4 includes a feed pipe 401, which is connected to the upper middle part of the right side of the storage barrel 5. A quantitative cylinder 402 is arranged on the upper side of the feed pipe 401, and the quantitative cylinder 402 can perform quantitative work on the device. The top of the feed pipe 401 is connected to a concave disk 403, and the inner bottom end of the concave disk 403 is rotatably connected to a plurality of valve bodies 404, and the valve bodies 404 can rotate. One side of the plurality of valve bodies 404 is rotatably connected to a pull plate 405, and the pull plate 405 The valve body 404 can be pulled to rotate, and one side of the top of the multiple pull plates 405 is rotatably connected to the rotating shaft 406, and the top of the concave disk 403 is rotatably connected to the movable ring 407, and the bottoms of the multiple movable rings 407 are respectively fixedly connected to the corresponding rotating shaft 406. When the movable ring 407 rotates, the valve body 404 can be pulled to rotate by the pull plate 405. The inner side of the movable ring 407 is fixedly connected to the connecting pipe 408, and the top of the connecting pipe 408 is connected to the quantitative cylinder 402; In the present invention, when it is necessary to add chemicals to the mud, the chemicals are first injected into the metering cylinder 402, and then the movable ring 407 is rotated. When the movable ring 407 rotates, it can pull the pull plate 405 to move through the rotating shaft 406. The movement of the pull plate 405 will further drive the valve body 404 to rotate synchronously. During the rotation of the valve body 404, the size of the flow channel inside the connecting pipe 408 can be accurately controlled. By controlling the size of the flow channel of the connecting pipe 408, the precise control of the chemical feeding speed can be achieved, so that during the mud circulation process, chemicals can be automatically and accurately added to the mud, thereby ensuring that the chemical composition and performance of the mud meet the predetermined requirements and reducing the workload of the staff.

[0025] Reference Figure 1 , Figure 2 and Figure 3 The filtering mechanism 2 also includes a box door 220, and the two box doors 220 are respectively arranged on the left and right sides of the box body 201. The front ends of the two box doors 220 that are far away from each other are fixedly connected with hinges 221. The two box doors 220 are rotatably connected to the box body 201 through the corresponding hinges 221, and the box body 201 can be easily opened through the hinges 221. A mud pump 8 is fixedly connected to the left side of the top of the base 1, and the left side of the mud pump 8 is connected to the horizontal directional drilling rig 6. The top of the mud pump 8 is connected to a discharge pipe 9, and the right end of the discharge pipe 9 is connected to the storage barrel 5. The top of the box body 201 is connected to a return pipe 7, and the left end of the return pipe 7 is connected to the horizontal directional drilling rig 6. The mud pump 8 can complete the circulation of mud through the return pipe 7 and the discharge pipe 9; In the present invention, the impurities inside the box body 201 can be easily cleaned by opening the box door 220, the discharge pipe 9 can connect the mud pump 8 with the storage barrel 5, and the mud pump 8 can complete the circulation of the mud through the discharge pipe 9 and the return pipe 7.

[0026] Reference Figure 2 and Fig. 9 The control mechanism 4 further includes a handle 409, which is fixedly connected to the top right side of the movable ring 407. The handle 409 facilitates the staff to rotate the movable ring 407. An observation window 410 is provided on the front side of the quantitative cylinder 402. A top cover 411 is threadedly connected to the top of the quantitative cylinder 402. The top cover 411 can seal the quantitative cylinder 402. In the present invention, the movable ring 407 can be easily rotated by the handle 409, the observation window 410 is convenient for the staff to perform quantitative work, and the top cover 411 can be used to conveniently close the quantitative cylinder 402.

[0027] Working principle: When the device is used, the recovered mud will enter the box 201, and the filter plate 202 will be able to filter the mud. The mud will then pass through the filter plate 202 and enter the storage barrel 5. Impurities will accumulate on the filter plate 202. At this time, the motor 209 will drive the first bevel gear 210 to rotate. Since the second bevel gear 211 is engaged with the first bevel gear 210, the second bevel gear 211 will drive the transmission rod 205 to rotate, and the first scraper 206 can scrape the impurities on the filter plate 202, so that the impurities fall above the baffle 204. , and the spring 213 will push the slide bar 214 to move, thereby driving the second scraper 207 to rotate, so that there is no dead angle in the scraping work, so that the filter plate 202 will not be blocked due to the accumulation of impurities, and when it is necessary to clean the impurities above the baffle 204, push the lever 218 forward, the lever 218 will drive the second mounting seat 217 to move forward, thereby pushing the first mounting seats 215 on both sides to move to both sides through the connecting rod 216, and the side filter 203 can push the impurities above the baffle 204 out of the box body 201, so that the impurities can be cleaned conveniently; When the mud is stored, the motor 311 drives the third bevel gear 313 to rotate through the second rotating rod 312. Since the fourth bevel gear 314 is meshed with the third bevel gear 313, the fourth bevel gear 314 will drive the transmission square shaft 302 to rotate, and the transmission square shaft 302 can drive the movable shaft 303 to rotate, and the second rotating rod 312 can drive the first rotating rod 307 to rotate through the transmission effect of the pulley 315 and the transmission belt 316. The first rotating rod 307 will drive the support plate 308 to rotate. At this time, the connecting column 309 on the rear side of the support plate 308 will perform a circular motion and can push the movable plate 305 to move up and down through the groove 306. The movable plate 305 will drive the movable shaft 303 to move up and down through the connecting block 304. The movable shaft 303 will drive the stirring blade 310 to rotate up and down at this time, so that the mud inside the storage barrel 5 can be mixed, so that the mud will not precipitate. When it is necessary to add chemicals to the mud, the chemicals are first injected into the metering cylinder 402, and the movable ring 407 is rotated. When the movable ring 407 rotates, the pull plate 405 can be pulled to move through the rotating shaft 406, and the pull plate 405 will drive the multiple valve bodies 404 to rotate. When the multiple valve bodies 404 rotate, the size of the flow channel inside the connecting pipe 408 can be controlled, thereby controlling the feeding speed of the chemicals. By controlling the feeding speed of the chemicals, chemicals can be automatically added to the mud during the mud circulation process.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mud circulation device for trenchless horizontal directional drilling, comprising a base (1), characterized in that: A storage barrel (5) is arranged on the upper side of the base (1), a horizontal directional drilling machine (6) is arranged on the left side of the base (1), a filtering mechanism (2) is arranged on the upper side of the storage barrel (5), the filtering mechanism (2) is used to facilitate filtering of the mud, a mixing mechanism (3) is arranged on the top of the base (1), the mixing mechanism (3) is used to facilitate mixing of the mud, and a control mechanism (4) is arranged on the middle upper part of the right side of the storage barrel (5), the control mechanism (4) is used to facilitate adding a reagent to the mud; The filtering mechanism (2) comprises a box (201), the box (201) being connected to the top of the base (1), a filter plate (202) being fixedly connected to the middle of the inner side of the box (201), side filter screens (203) being arranged on the left and right sides of the inner side of the box (201), baffle plates (204) being fixedly connected to the left and right ends of the inner middle and lower part of the box (201), a protective shell (208) being fixedly connected to the inner middle and upper part of the filter plate (202), and the filter screen (203) being fixedly connected to the inner middle and upper part of the filter plate (202). The middle part of the top of the protective shell (208) is rotatably connected to a transmission rod (205), the front and rear bottoms of the transmission rod (205) are fixedly connected to a first scraper (206), the front and rear ends of the first scraper (206) are rotatably connected to a second scraper (207), a driving component is arranged on the inner side of the protective shell (208), a pushing component is arranged on the left and right sides of the first scraper (206), and a moving component is arranged on the inner middle and lower part of the box body (201).

2. A mud circulation device for trenchless horizontal directional drilling according to claim 1, characterized in that: The mixing mechanism (3) comprises a shell (301), wherein the shell (301) is fixedly connected to the top of the base (1), the top of the shell (301) is fixedly connected to the storage barrel (5), the inner bottom end of the shell (301) is rotatably connected to a transmission square shaft (302), the outer side of the transmission square shaft (302) is slidably connected to a movable shaft (303), the outer middle and lower part of the movable shaft (303) is rotatably connected to a connecting block (304), the inner middle part of the shell (301) is slidably connected to a movable plate (305), and the front side of the connecting block (304) is fixedly connected to the movable plate (305). A groove (306) is provided on the front side of the movable plate (305); a first rotating rod (307) is rotatably connected to the front side of the shell (301); a supporting plate (308) is fixedly connected to the rear end of the first rotating rod (307); a connecting column (309) is fixedly connected to the rear side of the supporting plate (308); the connecting column (309) is slidably connected to the groove (306); the top end of the movable shaft (303) passes through the storage barrel (5); a plurality of stirring blades (310) are fixedly connected to the outer side of the movable shaft (303) at equal intervals; and a transmission assembly is provided inside the shell (301).

3. The mud circulation device for trenchless horizontal directional drilling according to claim 1, characterized in that: The control mechanism (4) comprises a feed pipe (401), wherein the feed pipe (401) is connected to the middle and upper part of the right side of the storage barrel (5), a metering cylinder (402) is arranged on the upper side of the feed pipe (401), and the top of the feed pipe (401) is connected to a concave disk (403), and the inner bottom end of the concave disk (403) is rotatably connected to a plurality of valve bodies (404), one side of each of the plurality of valve bodies (404) is rotatably connected to a pull plate (405), and one side of the top of each of the plurality of pull plates (405) is rotatably connected to a rotating shaft (406), and the top of the concave disk (403) is rotatably connected to a movable ring (407), and the bottoms of the plurality of movable rings (407) are respectively fixedly connected to the corresponding rotating shafts (406), and the inner side of the movable ring (407) is fixedly connected to a connecting pipe (408), and the top end of the connecting pipe (408) is connected to the metering cylinder (402).

4. The mud circulation device for trenchless horizontal directional drilling according to claim 1, characterized in that: The driving assembly comprises a motor (209), the motor (209) being fixedly connected to the middle and upper part of the rear side of the housing (201), the output end of the motor (209) passing through the housing (201) and the protective shell (208) in sequence and being fixedly connected to a first bevel gear (210), the top end of the transmission rod (205) passing through the protective shell (208) and being fixedly connected to a second bevel gear (211), and the second bevel gear (211) being meshingly connected to the first bevel gear (210).

5. The mud circulation device for trenchless horizontal directional drilling according to claim 1, characterized in that: The pushing assembly comprises a hollow tube (212), wherein the two hollow tubes (212) are rotatably connected to the left and right sides of the first scraper (206), respectively; the inner adjacent ends of the two hollow tubes (212) are fixedly connected to springs (213), and the ends of the two springs (213) that are away from each other are fixedly connected to sliding rods (214), and the two sliding rods (214) are rotatably connected to the corresponding second scrapers (207), respectively.

6. The mud circulation device for trenchless horizontal directional drilling according to claim 1, characterized in that: The moving assembly comprises a first mounting seat (215), the two first mounting seats (215) are respectively fixedly connected to adjacent sides of the two side filters (203), the adjacent sides of the two first mounting seats (215) are rotatably connected to a connecting rod (216), the adjacent ends of the two connecting rods (216) are rotatably connected to the same second mounting seat (217), the rear side of the second mounting seat (217) is fixedly connected to a lever (218), the rear end of the lever (218) passes through the box (201), the front and rear sides of the interior of the box (201) are fixedly connected to slide rails (219), and the front and rear sides of the two side filters (203) are respectively slidably connected to the corresponding slide rails (219).

7. The mud circulation device for trenchless horizontal directional drilling according to claim 2, characterized in that: The transmission assembly comprises a motor (311) and a transmission belt (316); the motor (311) is fixedly connected to the front bottom of the housing (301); the output end of the motor (311) passes through the housing (301) and is fixedly connected to a second rotating rod (312); the rear end of the second rotating rod (312) is fixedly connected to a third bevel gear (313); a fourth bevel gear (314) is fixedly connected to the middle and lower part of the outer side of the transmission square shaft (302); the fourth bevel gear (314) is meshingly connected to the third bevel gear (313); the outer sides of the second rotating rod (312) and the first rotating rod (307) are both fixedly connected to pulleys (315); the two pulleys (315) are connected in transmission via a transmission belt (316).

8. The mud circulation device for trenchless horizontal directional drilling according to claim 1, characterized in that: The filtering mechanism (2) further comprises a box door (220), wherein the two box doors (220) are respectively arranged on the left and right sides of the box body (201), and the front ends of the two box doors (220) on the sides away from each other are fixedly connected with hinges (221), and the two box doors (220) are respectively rotatably connected to the box body (201) via corresponding hinges (221).

9. The mud circulation device for trenchless horizontal directional drilling according to claim 3, characterized in that: The control mechanism (4) further comprises a handle (409), wherein the handle (409) is fixedly connected to the top right side of the movable ring (407), an observation window (410) is provided on the front side of the quantitative cylinder (402), and a top cover (411) is threadedly connected to the top of the quantitative cylinder (402).

10. The mud circulation device for trenchless horizontal directional drilling according to claim 1, characterized in that: A mud pump (8) is fixedly connected to the left side of the top of the base (1), the left side of the mud pump (8) is connected to the horizontal directional drilling rig (6), the top of the mud pump (8) is connected to a discharge pipe (9), the right end of the discharge pipe (9) is connected to the storage barrel (5), and the top of the box (201) is connected to a return pipe (7), the left end of the return pipe (7) is connected to the horizontal directional drilling rig (6).

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