An automatic pitching device

Abstract

The application belongs to the technical field of oil transportation, and particularly relates to an automatic ball throwing device, which comprises a pump body, a supporting plate fixedly installed at the bottom of the pump body, a ball falling cylinder fixedly installed at the bottom of the supporting plate, the pump body fixedly connected to the top of the ball falling cylinder through the supporting plate, a box body fixedly installed at the top of the pump body, a ball storage box fixedly installed at the middle of the top of the box body, a placing hopper fixedly installed at the top of the ball storage box, and a ball throwing assembly arranged in the pump body. The motor drives the transmission wheel to rotate. When the transmission wheel rotates, the transmission wheel drives the toothed plate to move. The toothed plate slides downward between the two arc blocks. The ball pushing plate slides on the inner wall of the two arc blocks, so that the wax removal ball can be prevented from being stuck between the two arc blocks and cannot be thrown out, and the ball throwing is assisted. Meanwhile, the ball pushing plate slides between the two arc blocks, so that the oil in the oil pipeline can be prevented from entering between the two arc blocks when the wax removal ball is thrown, and scale blocking is avoided.

Description

Technical Field

[0001] This invention belongs to the field of petroleum transportation technology, specifically an automatic ball-throwing device. Background Technology

[0002] Oilfield pipelines are a vital component of the oil and gas industry, playing a crucial role in the production, transportation, and distribution of oil. Oilfield pipeline systems encompass various types of pipelines, such as oil and gas gathering and transportation pipelines, clean oil and gas pipelines, water supply pipelines, sewage pipelines, and water injection pipelines.

[0003] An automatic ball-throwing device is used for dewaxing oil pipelines in oil fields. Its main function is to remove wax deposits from the pipeline walls by automatically throwing balls at set times, thereby ensuring the normal flow and efficient transportation of crude oil. This device has significant application value in oilfield production.

[0004] In current technology, when dewaxing balls are deployed to oilfield pipelines, the diameter of the ball loading barrel and the diameter of the dewaxing balls are not much different. When the ball valve is turned, crude oil is easily carried into the ball loading barrel, causing scale to form on the barrel wall, the balls to stick together and swell. As a result, the dewaxing balls get stuck in the barrel and cannot fall into the ball valve, affecting the effectiveness of the ball deployment.

[0005] Therefore, the present invention provides an automatic ball-throwing device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The automatic ball-throwing device of the present invention includes a pump body, a support plate fixedly installed at the bottom of the pump body, a ball-dropping cylinder fixedly installed at the bottom of the support plate, the pump body being fixedly connected to the top of the ball-dropping cylinder through the support plate, a box fixedly installed at the top of the pump body, a ball storage box fixedly installed at the middle position of the top of the box, a placement funnel fixedly installed at the top of the ball storage box, a ball-throwing assembly is provided inside the pump body, the ball-throwing assembly includes a plunger, the ball-throwing assembly is used to drive the dewaxed balls to be thrown through the plunger, an opening and closing assembly is provided inside the box, the opening and closing assembly is used to drive the dewaxed balls from the ball storage box to the pump body, a ball-lifting assembly is provided inside the ball storage box, the ball-lifting assembly is used to lift the remaining dewaxed balls when one of the dewaxed balls moves from the ball storage box to the pump body, and a synchronous drive assembly is provided inside the box, the synchronous drive assembly is used to drive the ball-lifting assembly and the ball-throwing assembly to move synchronously.

[0008] Before use, multiple wax-removing balls are sequentially placed into the ball storage box through the placement funnel. Once all the wax-removing balls are in the storage box, the installation is complete. When ball placement is required in the oilfield pipeline, the ball placement assembly drives the plunger to deploy the wax-removing balls into the pipeline. During operation, the ball placement assembly, through the co-drive assembly, drives the ball lifting assembly. This causes the ball lifting assembly to scoop up and lift the multiple wax-removing balls from the storage box, separating them and preventing them from piling up and causing jamming. Simultaneously, by… The separation of multiple wax-removing balls by shoveling them apart also prevents the balls from sticking together. When the ball-lifting assembly scoops up multiple wax-removing balls, it drives the opening and closing assembly to open, allowing a wax-removing ball located at the bottom of the storage box to fall into the pump body for ball loading. When the ball-throwing assembly drops the wax-removing ball into the oilfield pipeline through the ball drop tube for resetting, it drives the ball-lifting assembly to reset. At the same time, the ball-lifting assembly resets and drives the opening and closing assembly to close, preventing the ball-throwing assembly from bringing crude oil into the storage box during the resetting and ball-throwing process, which could cause fouling and affect the loading effect.

[0009] Preferably, the throwing assembly further includes a control actuator, which is fixedly installed on the top of the support plate. A support base is fixedly installed on the top of the support plate, and a motor is fixedly installed on the top of the support base. One end of the control actuator is fixedly connected to one side of the motor. A rotating rod is fixedly installed on the output end of the motor. Arc-shaped blocks are symmetrically rotatably connected to the inner wall of the pump body. A plunger is placed between two arc-shaped blocks. Connecting parts are symmetrically fixedly installed on the outer wall of the plunger. One end of each connecting part is slidably connected to the inner wall of the two arc-shaped blocks. A transmission wheel is fixedly installed on the outer wall of the rotating rod, and a toothed plate is fixedly installed on the inner wall of the plunger. The teeth on the transmission wheel and the teeth on the toothed plate... The device features a toothed mesh, with grooved blocks fixedly installed on one side of each of the two arc-shaped blocks. A telescopic cylinder is fixedly installed at one end of the rotating rod, and torque rods are fixedly installed at both output ends of the telescopic cylinder. When throwing the ball, the telescopic cylinder first drives the two torque rods to engage with the two grooved blocks, thus forming the two arc-shaped blocks with the rotating rod through the two torque rods. Then, the actuator controls the motor to rotate. When the motor rotates, it drives the plunger and the arc-shaped blocks to rotate within the housing, causing the top of the plunger to rotate directly above the ball drop tube. This allows the dewax ball placed on the top of the plunger to be thrown into the oilfield pipeline through the ball drop tube, thus achieving the function of throwing the ball.

[0010] Preferably, both ends of the plunger are fixedly equipped with ball-pushing plates. The outer walls of the two ball-pushing plates can slide and connect with the inner sides of the two arc-shaped blocks. When the motor drives the plunger to rotate directly above the ball-dropping cylinder, the motor drives the rotating rod to rotate. When the rotating rod rotates, it drives the transmission wheel to rotate. Since the transmission wheel and the toothed plate are meshed, when the transmission wheel rotates, the transmission wheel drives the toothed plate to move. The toothed plate will slide downward between the two arc-shaped blocks, and the ball-pushing plates will slide against the inner walls of the two arc-shaped blocks, preventing the wax-removing balls from being unable to be released between the two arc-shaped blocks, thus playing an auxiliary role in ball release. At the same time, by sliding the ball-pushing plates between the two arc-shaped blocks, it can prevent oil in the oil pipeline from entering between the two arc-shaped blocks when the wax-removing balls are released, causing scale blockage. The two ends of the plunger are symmetrically arranged. When one end of the plunger is placed directly above the ball-dropping cylinder, the other end of the plunger will be placed directly below the ball storage box.

[0011] Preferably, the ball-lifting assembly includes two ball-holding racks symmetrically arranged inside the ball storage box. The space between the two racks is used to hold the wax-removing balls. Symmetrically arranged inside the ball storage box are shifting rods, each with multiple ball-lifting blocks fixedly installed on its inner side. Each shifting rod has a pressure block fixedly installed at one end. Multiple through-holes are formed on the inner walls of both ball-holding racks. The outer walls of the multiple ball-lifting blocks are slidably connected to the inner walls of the through-holes. One end of each pressure block is an inclined sliding surface. When the motor drives the plunger to move between the two curved blocks, the motor pushes the two pressure blocks inward through the co-drive assembly. When the two pressure blocks move inward, the pressure blocks... The motor drives multiple ball-lifting blocks to move into the ball-receiving rack. When the motor drives the ball-pushing plate to the bottom between the two arc-shaped blocks, the multiple ball-lifting blocks lift the multiple wax-removed balls in the ball-receiving rack through the through-hole, separating the multiple wax-removed balls and preventing them from piling up and getting stuck during loading. At the same time, by scooping up and separating the multiple wax-removed balls, it can also prevent the balls from sticking to each other. Since the ball-lifting block at the bottom is located a distance away from the bottom of the ball-receiving rack, when the multiple wax-removed balls in the ball-receiving rack are scooped up, the wax-removed ball at the bottom of the ball-receiving rack cannot be scooped up, so that it can be replenished for the next ball loading operation.

[0012] Preferably, a round rod is fixedly installed on the outer wall of the telescopic cylinder, and an electronic telescopic rod is slidably connected to the inner wall of one end of the round rod. A rotary table is fixedly installed on one end of the electronic telescopic rod. When the actuator drives the top of the plunger to rotate directly above the ball drop tube, the telescopic cylinder drives two rods to move out from inside the two slots. Then, the electronic telescopic rod is inserted into the round rod, so that when the motor rotates, the motor can drive the rotary table to rotate through the electronic telescopic rod, thus playing the role of assembly transmission.

[0013] Preferably, the co-drive assembly includes two shafts, both ends of which are rotatably connected to the inner wall of the housing. Each shaft has a threaded opening in the middle, and push blocks are threadedly connected to the outer walls of both threaded openings. One end of each push block is a sloping surface, and each end of the push block can slide against one end of each of the two pressure blocks. A drive shaft is fixedly installed at one end of each shaft and one end of the rotary table. A belt rotatably connects the inner walls of the three drive shafts. When the rotary table rotates, it drives the two shafts to rotate via the drive shafts and belts. As the shafts rotate, the threaded drive causes the two push blocks to move along the threaded openings on the shafts, pushing the two pressure blocks and causing the two shifting rods to move inward. Simultaneously, multiple ball-lifting blocks scoop up the wax balls placed in the ball storage box, achieving a synchronous drive effect.

[0014] Preferably, two sets of sliding rods are fixedly installed on the inner wall of the ball storage box. The inner walls of the two shift rods are slidably connected to the outer walls of the two sets of sliding rods. Two sets of return springs are symmetrically arranged between the inner wall of the box and the outer walls of the two shift rods. The two sets of return springs are placed outside the two sets of sliding rods. When the push block moves from one end of the shaft to the other end, the pressure block will lose its limiting thrust. The shift rod will return to its original position under the elastic return force of the return spring, so that one end of the pressure block is placed back to the side of the push block, which is convenient for the next ball shoveling operation.

[0015] Preferably, the opening and closing assembly includes two toothed rods. Two ball-blocking blocks are symmetrically arranged between the top of the pump body and the inner wall of the housing. The outer walls of both ball-blocking blocks are slidably connected to the inner wall of the top of the pump body. One end of each toothed rod is fixedly connected to the outer wall of the two ball-blocking blocks. Gears are symmetrically arranged on the inner wall of the housing. The teeth of the two gears mesh with the teeth of the two shift rods and the toothed rods. The outer walls of the two arc-shaped blocks can slidably connect to the bottom of the two ball-blocking blocks. When the two pressure blocks move inward, the shift rods drive the toothed rods to move via the gears, causing the two toothed rods to open by moving along the inner wall of the top of the pump body. When multiple lifting blocks scoop up the wax-removing balls, the two blocking blocks fully open, and the wax-removing balls at the bottom of the ball receiving rack lose their limiting position, allowing them to fall from the bottom of the ball receiving rack between the two arc-shaped blocks, thus completing the ball loading operation. When the shift rod returns to its original position under the elastic restoring force of the return spring, the shift rod will push the gear to reverse, and the two blocking blocks will slide and close at the top of the pump body. This prevents the arc-shaped blocks from carrying crude oil into the ball storage box when the control actuator drives them to rotate, avoiding scale buildup inside the ball receiving rack and preventing the wax-removing balls from falling. This serves to block oil flow.

[0016] Preferably, a controller is fixedly installed on one side of the ball storage box. Before operation, the time for placing the wax cleaning balls is input into the system of the controller, and the controller will control the device to place the wax cleaning balls at regular intervals. The controller is set to remotely control the timed placement.

[0017] Preferably, a hydraulic cylinder is fixedly installed on the other side of the ball storage box, and a strip plate is fixedly installed on the output end of the hydraulic cylinder. Connecting rods are symmetrically fixedly installed on the outer walls of the two ball receiving frames. One end of each of the four connecting rods is connected to the inner wall of the two strip plates in pairs. The bottom ends of the two ball receiving frames are slidably connected to the inner walls of the two ball blocking blocks respectively. By controlling the hydraulic cylinder to drive the strip plate to move, the strip plate drives the ball receiving frame to move in the ball storage box through the connecting rods, thereby adjusting the distance between the two ball receiving frames. Different sizes of dewaxing balls can be placed between the two ball receiving frames, making this device suitable for placing dewaxing balls in oilfield pipelines of different sizes.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The automatic ball-throwing device of the present invention uses a motor to drive a transmission wheel to rotate. When the transmission wheel rotates, it drives a toothed plate to move. The toothed plate slides downward between two arc-shaped blocks, and the ball-pushing plate slides against the inner wall of the two arc-shaped blocks, preventing the wax-removing ball from getting stuck between the two arc-shaped blocks and thus assisting in the ball-throwing process. At the same time, the sliding of the ball-pushing plate between the two arc-shaped blocks prevents oil from the oil pipeline from entering between the two arc-shaped blocks during the throwing of the wax-removing ball, thus preventing scaling and blockage.

[0020] 2. The automatic ball-throwing device of the present invention, when the motor drives the plunger to move between two arc-shaped blocks, the motor pushes two pressure blocks inward through the co-drive assembly. When the two pressure blocks move inward, the pressure blocks drive multiple ball-lifting blocks to move into the ball-receiving rack. When the motor drives the ball-pushing plate to the bottom end between the two arc-shaped blocks, at this time, the multiple ball-lifting blocks lift multiple waxed balls in the ball-receiving rack through the through-hole, so that the multiple waxed balls are separated from each other, preventing the waxed balls from stacking and causing ball jamming during loading. At the same time, by scooping up and separating the multiple waxed balls, it can also prevent the balls from sticking to each other.

[0021] 3. In the automatic ball-throwing device of the present invention, when the two pressure blocks move inward, the shift rod drives the rack through the gear to move. The two racks will then move and open on the inner wall of the top of the pump body. When multiple ball-lifting blocks scoop up the wax balls, the two ball-blocking blocks will be fully opened. The wax balls located at the bottom of the ball rack will lose the limit of the ball-blocking blocks and fall from the bottom of the ball rack between the two arc-shaped blocks. When the shift rod returns to its original position under the elastic restoring force of the return spring, the shift rod will push the gear to reverse. The two ball-blocking blocks will then slide and close at the top of the pump body. This prevents the arc-shaped blocks from carrying crude oil into the ball storage box when the controller drives the arc-shaped blocks to rotate, and avoids scale buildup in the ball rack, which would prevent the wax balls from falling. This device serves to block oil flow.

[0022] 4. The automatic ball-throwing device of the present invention controls the hydraulic cylinder to drive the bar plate to move, so that the bar plate drives the ball-holding rack to move in the ball storage box through the connecting rod, thereby adjusting the distance between the two ball-holding racks, so that different sizes of dewaxing balls can be placed between the two ball-holding racks, making the device suitable for throwing dewaxing balls of different sizes into oilfield pipelines.

[0023] 5. The automatic ball-throwing device of the present invention, when the rotating disc rotates, the rotating disc drives two shafts to rotate through the transmission shaft and belt. When the two shafts rotate, through the threaded transmission, the shafts drive two push blocks to move on the threaded openings on the shafts. The two push blocks then push two pressure blocks, thereby causing the two shifting rods to move inward. At the same time, multiple ball-lifting blocks scoop up the waxed balls placed in the ball storage box, which plays a role in synchronous driving. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a main body diagram of the present invention;

[0026] Figure 2 This is an overall diagram of the invention;

[0027] Figure 3 This is a schematic diagram of the structure of the plunger in this invention;

[0028] Figure 4 This is a schematic diagram of the structure of the ball rack in this invention;

[0029] Figure 5 This is a schematic diagram of the push block structure in this invention;

[0030] Figure 6 This is a schematic diagram of the structure at the transmission shaft in this invention;

[0031] Figure 7This is a schematic diagram of the toothed plate in this invention;

[0032] Figure 8 This is a schematic diagram of the structure of the ball-blocking block in this invention.

[0033] In the diagram: 1. Housing; 101. Shaft; 102. Threaded end; 103. Push block; 104. Belt; 105. Drive shaft; 106. Indexing plate; 107. Electronic telescopic rod; 2. Pump body; 201. Arc block; 202. Piston; 203. Push ball bearing plate; 204. Drive wheel; 205. Gear plate; 206. Connecting part; 3. Ball storage box; 301. Ball receiving rack; 302. Ball blocking block; 303. Gear; 304. Shifting frame 305. Rod; 306. Pressure block; 307. Return spring; 308. Ball lifting block; 309. Limiting rod; 3010. Through-hole; 3010. Gear; 4. Placement funnel; 5. Control actuator; 6. Motor; 601. Rotating rod; 602. Support; 7. Ball dropping tube; 8. Hydraulic cylinder; 801. Strip plate; 802. Connecting rod; 9. Support plate; 10. Controller; 11. Telescopic cylinder; 12. Groove block; 13. Rectangular rod; 14. Round rod. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] like Figures 1 to 8 As shown in the embodiment of the present invention, an automatic ball-throwing device includes a pump body 2, a support plate 9 fixedly installed at the bottom of the pump body 2, a ball-dropping cylinder 7 fixedly installed at the bottom of the support plate 9, the pump body 2 being fixedly connected to the top of the ball-dropping cylinder 7 via the support plate 9, a box 1 fixedly installed at the top of the pump body 2, a ball storage box 3 fixedly installed at the middle position of the top of the box 1, a placement funnel 4 fixedly installed at the top of the ball storage box 3, a ball-throwing assembly inside the pump body 2, the ball-throwing assembly including a plunger 202, the ball-throwing assembly being used to drive the dewaxed balls to be thrown through the plunger 202, an opening and closing assembly inside the box 1, the opening and closing assembly being used to drive the dewaxed balls from the ball storage box 3 to the pump body 2, a ball-lifting assembly inside the ball storage box 3, the ball-lifting assembly being used to lift the remaining dewaxed balls when one of the dewaxed balls moves from the ball storage box 3 to the pump body 2, and a synchronous drive assembly inside the box 1, the synchronous drive assembly being used to drive the ball-lifting assembly and the ball-throwing assembly to move synchronously.

[0036] Because the ball valve can easily carry crude oil into the ball loading cylinder when it rotates, it can cause scale buildup on the cylinder wall, sticking together of the balls, and swelling, which can cause the dewaxing balls to get stuck in the cylinder and not fall into the ball valve.

[0037] Before use, multiple wax-removing balls are sequentially placed into the ball storage box 3 through the placement funnel 4. Once all the wax-removing balls are in the ball storage box 3, the installation is complete. When it is necessary to drop the balls into the oilfield pipeline, the dropping assembly drives the plunger 202 to operate, dropping the wax-removing balls into the pipeline. During operation, the dropping assembly, through the co-drive assembly, drives the lifting assembly. The lifting assembly scoops up and lifts the multiple wax-removing balls in the ball storage box 3, separating them and preventing them from piling up and causing jamming. Simultaneously, by scooping up and separating the multiple wax-removing balls... This also prevents multiple wax-removing balls from sticking together. When the ball-lifting assembly scoops up multiple wax-removing balls, it drives the opening and closing assembly to open, allowing a wax-removing ball located at the bottom of the ball storage box 3 to fall into the pump body 2 for ball loading and assembly. When the ball-throwing assembly throws the wax-removing ball into the oilfield pipeline through the ball dropper 7 for resetting, the ball-throwing assembly drives the ball-lifting assembly to reset. At the same time, the ball-lifting assembly resets and drives the opening and closing assembly to close, preventing the ball-throwing assembly from carrying crude oil into the ball storage box 3 during the resetting and ball-throwing process, which would cause fouling and affect the loading effect. By repeating this method, the loading of wax-removing balls can be completed.

[0038] like Figures 3 to 7 As shown, the throwing assembly also includes a control actuator 5, which is fixedly installed on the top of the support plate 9. A support base 602 is fixedly installed on the top of the support plate 9, and a motor 6 is fixedly installed on the top of the support base 602. One end of the control actuator 5 is fixedly connected to one side of the motor 6. A rotating rod 601 is fixedly installed on the output end of the motor 6. Arc-shaped blocks 201 are symmetrically rotatably connected to the inner wall of the pump body 2. A plunger 202 is placed between two arc-shaped blocks 201. A connecting rod is symmetrically fixedly installed on the outer wall of the plunger 202. The connector 206 has one end slidably connected to the inner wall of the two arc blocks 201 respectively. The outer wall of the rotating rod 601 is fixedly installed with a transmission wheel 204. The inner wall of the plunger 202 is fixedly installed with a toothed plate 205. The teeth on the transmission wheel 204 mesh with the teeth on the toothed plate 205. A groove block 12 is fixedly installed on one side of each of the two arc blocks 201. A telescopic cylinder 11 is fixedly installed at one end of the rotating rod 601. A torque rod 13 is fixedly installed at both output ends of the telescopic cylinder 11.

[0039] When throwing the ball, the telescopic cylinder 11 first drives the two rods 13 to be inserted into the two slot blocks 12 respectively, so that the two arc blocks 201 are integrated with the rotating rod 601 through the two rods 13. Then, the actuator 5 controls the motor 6 to rotate. When the motor 6 rotates, it can drive the plunger 202 and the arc block 201 to rotate in the housing 1, so that the top of the plunger 202 rotates to be directly above the ball drop tube 7, thereby throwing the wax ball placed on the top of the plunger 202 into the oilfield pipeline through the ball drop tube 7, which plays the role of throwing the ball.

[0040] like Figures 6 to 7 As shown, both ends of the plunger 202 are fixedly installed with ball-pushing plates 203, and the outer walls of the two ball-pushing plates 203 can slide and connect with the inner side of the two arc blocks 201.

[0041] When the motor 6 drives the plunger 202 to rotate directly above the ball dropper 7, the motor 6 drives the rotating rod 601 to rotate. The rotating rod 601 then drives the transmission wheel 204 to rotate. Since the transmission wheel 204 is meshed with the toothed plate 205, when the transmission wheel 204 rotates, it drives the toothed plate 205 to move. The toothed plate 205 then slides downwards between the two arc-shaped blocks 201, and the ball-pushing plate 203 slides against the inner wall of the two arc-shaped blocks 201. The movement of the plunger 202 prevents the dewaxing ball from being unable to be released between the two arc-shaped blocks 201, thus assisting in the ball release. At the same time, the sliding of the ball-pushing plate 203 between the two arc-shaped blocks 201 prevents oil from the oil pipeline from entering between the two arc-shaped blocks 201 during the release of the dewaxing ball, causing scaling and blockage. The two ends of the plunger 202 are symmetrically arranged. When one end of the plunger 202 is placed directly above the ball-dropping cylinder 7, the other end of the plunger 202 will be placed directly below the ball storage box 3.

[0042] like Figures 4 to 5 As shown, the ball lifting assembly includes a ball holding rack 301. There are two ball holding racks 301, which are symmetrically arranged inside the ball storage box 3. The space between the two ball holding racks 301 is used to place clear wax balls. The ball storage box 3 is symmetrically arranged with a moving frame rod 304 inside. Multiple ball lifting blocks 307 are fixedly installed on the inner side of each of the two moving frame rods 304. A pressure block 305 is fixedly installed at one end of each of the two moving frame rods 304. Multiple through holes 309 are opened on the inner wall of each of the two ball holding racks 301. The outer wall of the multiple ball lifting blocks 307 is slidably connected to the inner wall of the multiple through holes 309. One end of each of the two pressure blocks 305 is an inclined sliding surface.

[0043] When motor 6 drives plunger 202 to move between the two arc-shaped blocks 201, motor 6 pushes two pressure blocks 305 inward through the co-drive assembly. As the two pressure blocks 305 move inward, they drive multiple ball-lifting blocks 307 to move into the ball-holding rack 301. When motor 6 drives the ball-pushing plate 203 to the bottom between the two arc-shaped blocks 201, the multiple ball-lifting blocks 307 lift multiple wax-removing balls inside the ball-holding rack 301 through the through-hole 309. Multiple wax balls are separated to prevent them from piling up and getting stuck during loading. Also, separating multiple wax balls prevents them from sticking together. Since the bottom-mounted ball-lifting block 307 is a distance from the bottom of the ball-holding rack 301, when multiple wax balls in the rack are lifted, the wax ball at the bottom of the rack cannot be lifted, allowing for replenishment in the next loading operation.

[0044] like Figures 5 to 6 As shown, a round rod 14 is fixedly installed on the outer wall of the telescopic cylinder 11, and an electronic telescopic rod 107 is slidably connected to the inner wall of one end of the round rod 14. A rotary table 106 is fixedly installed on one end of the electronic telescopic rod 107.

[0045] When the actuator 5 drives the top of the plunger 202 to rotate directly above the ball dropper 7, the telescopic cylinder 11 drives the two rods 13 to move out of the two slot blocks 12. Then, the electronic telescopic rod 107 is inserted into the round rod 14, so that when the motor 6 rotates, the motor 6 can drive the rotary table 106 to rotate through the electronic telescopic rod 107, which plays the role of assembly transmission.

[0046] like Figures 5 to 6 As shown, the co-drive assembly includes two shafts 101. Both ends of the two shafts 101 are rotatably connected to the inner wall of the housing 1. A threaded opening 102 is provided in the middle of each of the two shafts 101. Push blocks 103 are threadedly connected to the outer walls of the two threaded openings 102. One end of each push block 103 is a sloping surface. One end of each push block 103 can be slidably connected to one end of each of the two pressure blocks 305. A drive shaft 105 is fixedly installed on one end of each of the two shafts 101 and one end of the rotary table 106. A belt 104 is rotatably connected between the inner walls of the three drive shafts 105.

[0047] When the indexing disk 106 rotates, it drives two shafts 101 to rotate via the drive shaft 105 and belt 104. When the two shafts 101 rotate, through the threaded drive, the shafts 101 drive two push blocks 103 to move on the threaded openings 102 on the shafts 101. The two push blocks 103 then push the two pressure blocks 305, thereby causing the two shifting rods 304 to move inward. At the same time, multiple ball lifting blocks 307 scoop up the wax balls placed in the ball storage box 3, which plays a role in synchronous driving. It should be noted that the number of turns of the threaded opening 102 is the same as the number of turns of the drive wheel 204. The number of turns of the drive wheel 204 and the number of teeth on the toothed plate 205 need to be calculated based on actual measurements.

[0048] like Figures 4 to 5 As shown, two sets of limiting rods 308 are fixedly installed on the inner wall of the ball storage box 3. The inner walls of the two shift rods 304 are slidably connected to the outer walls of the two sets of limiting rods 308 respectively. Two sets of return springs 306 are symmetrically arranged between the inner wall of the box 1 and the outer walls of the two shift rods 304. The two sets of return springs 306 are respectively placed outside the two sets of limiting rods 308.

[0049] When the push block 103 moves from one end of the shaft 101 to the other end, the pressure block 305 will lose its limiting thrust, and the shift rod 304 will return to its original position under the elastic restoring force of the return spring 306, so that one end of the pressure block 305 is returned to the side of the push block 103, which is convenient for the next ball shoveling operation.

[0050] like Figures 4 to 5 As shown, the opening and closing assembly includes a toothed rod 303, and there are two toothed rods 303. A ball-blocking block 302 is symmetrically arranged between the top of the pump body 2 and the inner wall of the housing 1. The outer walls of the two ball-blocking blocks 302 are slidably connected to the top inner wall of the pump body 2. One end of the two toothed rods 303 is fixedly connected to the outer walls of the two ball-blocking blocks 302 respectively. Gears 3010 are symmetrically arranged on the inner wall of the housing 1. The teeth of the two gears 3010 mesh with the teeth on the two shift rods 304 and the toothed rods 303 respectively. The outer walls of the two arc-shaped blocks 201 can be slidably connected to the bottom of the two ball-blocking blocks 302.

[0051] When the two pressure blocks 305 move inward, the shift rod 304 drives the rack 303 to move via the gear 3010. The two racks 303 then move and open on the inner wall of the top of the pump body 2. When the multiple lifting blocks 307 scoop up the wax-removing balls, the two blocking blocks 302 fully open. The wax-removing balls located at the bottom of the ball receiving frame 301 lose the restraint of the blocking blocks 302, causing them to fall from the bottom of the ball receiving frame 301 between the two arc-shaped blocks 201, thus completing the process. During the ball loading operation, when the shift rod 304 returns to its original position under the elastic restoring force of the return spring 306, the shift rod 304 will drive the gear 3010 to reverse. The two ball blocking blocks 302 will then slide and close at the top of the pump body 2. This prevents the arc surface block 201 from carrying crude oil into the ball storage box 3 when the control actuator 5 drives the arc surface block 201 to rotate. It also prevents scale buildup inside the ball holder 301 and avoids the phenomenon that the dewaxing balls cannot fall off, thus playing a role in blocking oil.

[0052] like Figures 1 to 2 As shown, a controller 10 is fixedly installed on one side of the ball storage box 3;

[0053] Before operation, the time for dispensing the wax cleaning balls is input into the system of the controller 10. The controller 10 will then control the device to dispense the wax cleaning balls at regular intervals. The settings of the controller 10 enable remote control of timed dispensing.

[0054] like Figures 5 to 8 As shown, a hydraulic cylinder 8 is fixedly installed on the other side of the ball storage box 3. A strip plate 801 is fixedly installed on the output end of the hydraulic cylinder 8. Connecting rods 802 are symmetrically fixedly installed on the outer walls of the two ball holding racks 301. One end of the four connecting rods 802 is connected to the inner wall of the two strip plates 801 in pairs. The bottom ends of the two ball holding racks 301 are slidably connected to the inner walls of the two ball blocking blocks 302 respectively.

[0055] Before use, the hydraulic cylinder 8 is controlled to move the strip plate 801, which in turn moves the ball rack 301 within the ball storage box 3 via the connecting rod 802. This adjusts the distance between the two ball racks 301, allowing different sizes of dewaxing balls to be placed between them. This makes the device suitable for placing dewaxing balls on oilfield pipelines of different sizes.

[0056] Working principle: Before use, multiple wax-removing balls are sequentially placed into the ball storage box 3 through the placement funnel 4. Once all the wax-removing balls are in the ball storage box 3, the installation is complete. When ball placement is required in the oilfield pipeline, the ball placement assembly drives the plunger 202 to place the wax-removing balls into the pipeline. During operation, the ball placement assembly, through the co-drive assembly, drives the ball lifting assembly. This causes the ball lifting assembly to scoop up and lift the multiple wax-removing balls in the ball storage box 3, separating them and preventing them from piling up and causing jamming. By scooping up and separating multiple wax-removing balls, it is also possible to prevent the balls from sticking together. When the ball-lifting assembly scoops up and lifts multiple wax-removing balls, it drives the opening and closing assembly to open. A wax-removing ball located at the bottom of the ball storage box 3 will fall into the pump body 2 for ball loading and assembly. When the ball-throwing assembly throws the wax-removing ball into the oilfield pipeline through the ball drop tube 7 for resetting, the ball-throwing assembly drives the ball-lifting assembly to reset. At the same time, the ball-lifting assembly resets and drives the opening and closing assembly to close. This prevents the ball-throwing assembly from carrying crude oil into the ball storage box 3 during the resetting and ball-throwing process, which would cause fouling in the ball storage box 3 and affect the delivery effect.

[0057] When throwing the ball, the telescopic cylinder 11 first drives the two rods 13 to be inserted into the two slot blocks 12 respectively, so that the two arc blocks 201 are integrated with the rotating rod 601 through the two rods 13. Then, the actuator 5 controls the motor 6 to rotate. When the motor 6 rotates, it can drive the plunger 202 and the arc block 201 to rotate in the housing 1, so that the top of the plunger 202 rotates to the top of the ball drop tube 7, thereby throwing the wax ball placed at the top of the plunger 202 into the oilfield pipeline through the ball drop tube 7, which plays the role of throwing the ball.

[0058] When the motor 6 drives the plunger 202 to rotate directly above the ball dropper 7, the motor 6 drives the rotating rod 601 to rotate. The rotating rod 601 then drives the transmission wheel 204 to rotate. Since the transmission wheel 204 is meshed with the toothed plate 205, when the transmission wheel 204 rotates, it drives the toothed plate 205 to move. The toothed plate 205 then slides downwards between the two arc-shaped blocks 201, and the ball-pushing plate 203 slides against the inner wall of the two arc-shaped blocks 201. The movement of the ball-removing plate 203 between the two arc-shaped blocks 201 helps to prevent the dewaxing ball from being unable to be released. At the same time, the ball-pushing plate 203 slides between the two arc-shaped blocks 201 to prevent oil from the oil pipeline from entering between the two arc-shaped blocks 201 and causing scale blockage when the dewaxing ball is released. The two ends of the plunger 202 are symmetrically arranged. When one end of the plunger 202 is placed directly above the ball-dropping cylinder 7, the other end of the plunger 202 will be placed directly below the ball storage box 3.

[0059] When motor 6 drives plunger 202 to move between the two arc-shaped blocks 201, motor 6 pushes two pressure blocks 305 inward through the co-drive assembly. As the two pressure blocks 305 move inward, they drive multiple ball-lifting blocks 307 to move into the ball-holding rack 301. When motor 6 drives the ball-pushing plate 203 to the bottom between the two arc-shaped blocks 201, the multiple ball-lifting blocks 307 lift multiple wax-removing balls inside the ball-holding rack 301 through the through-hole 309. Multiple wax balls are separated to prevent them from piling up and getting stuck during loading. Also, separating multiple wax balls by scooping them up can prevent them from sticking together. Since the bottom ball lifting block 307 is located a distance from the bottom of the ball receiving rack 301, when multiple wax balls in the ball receiving rack 301 are scooped up, the wax ball at the bottom of the ball receiving rack 301 cannot be scooped up, so that it can be replenished for the next loading operation.

[0060] When the actuator 5 drives the top of the plunger 202 to rotate directly above the ball dropper 7, the telescopic cylinder 11 drives the two rods 13 to move out of the two slot blocks 12. Then, the electronic telescopic rod 107 is inserted into the round rod 14, so that when the motor 6 rotates, the motor 6 can drive the rotary table 106 to rotate through the electronic telescopic rod 107, which plays the role of assembly transmission.

[0061] When the indexing disk 106 rotates, the indexing disk 106 drives the two shafts 101 to rotate through the transmission shaft 105 and the belt 104. When the two shafts 101 rotate, through the threaded transmission, the shafts 101 will drive the two push blocks 103 to move on the threaded openings 102 on the shafts 101. The two push blocks 103 will push the two pressure blocks 305, thereby causing the two shifting rods 304 to move inward. At the same time, multiple ball lifting blocks 307 will scoop up the wax balls placed in the ball storage box 3, which plays a role in synchronous driving.

[0062] When the push block 103 moves from one end of the shaft 101 to the other end, the pressure block 305 will lose its limiting thrust, and the shift rod 304 will return to its original position under the elastic restoring force of the return spring 306, so that one end of the pressure block 305 is returned to the side of the push block 103, which is convenient for the next shovel operation.

[0063] When the two pressure blocks 305 move inward, the shift rod 304 drives the rack 303 to move via the gear 3010. The two racks 303 then move and open on the inner wall of the top of the pump body 2. When the multiple lifting blocks 307 scoop up the wax-removing balls, the two blocking blocks 302 fully open. The wax-removing balls located at the bottom of the ball receiving frame 301 lose the restraint of the blocking blocks 302, causing them to fall from the bottom of the ball receiving frame 301 between the two arc-shaped blocks 201, thus completing the process. During the ball loading operation, when the shift rod 304 returns to its original position under the elastic restoring force of the return spring 306, the shift rod 304 will push the gear 3010 to reverse. The two ball blocking blocks 302 will then slide and close at the top of the pump body 2. This prevents the arc surface block 201 from carrying crude oil into the ball storage box 3 when the control actuator 5 drives the arc surface block 201 to rotate. It also prevents scale buildup inside the ball holder 301 and avoids the phenomenon that the dewaxing balls cannot fall off, thus playing a role in blocking oil.

[0064] Before operation, the time for the wax removal ball to be placed is input into the system of the controller 10. The controller 10 will then control the device to place the wax removal ball at regular intervals. The settings of the controller 10 enable remote control of timed placement.

[0065] By controlling the hydraulic cylinder 8 to move the strip plate 801, the strip plate 801 moves the ball rack 301 within the ball storage box 3 via the connecting rod 802, thereby adjusting the distance between the two ball racks 301. This allows different sizes of dewaxing balls to be placed between the two ball racks 301, making the device suitable for placing dewaxing balls on oilfield pipelines of different sizes.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic ball-throwing device, characterized in that: The pump body (2) includes a support plate (9) fixedly installed at the bottom of the pump body (2), a ball drop tube (7) fixedly installed at the bottom of the support plate (9), the pump body (2) is fixedly connected to the top of the ball drop tube (7) through the support plate (9), a box (1) is fixedly installed at the top of the pump body (2), a ball storage box (3) is fixedly installed at the middle position of the top of the box (1), a placement funnel (4) is fixedly installed at the top of the ball storage box (3), and a ball throwing assembly is provided inside the pump body (2), the ball throwing assembly includes a plunger (202). The ball-throwing assembly is used to drive the dewax-removing ball to be thrown by the plunger (202). The box (1) is equipped with an opening and closing assembly, which is used to drive the dewax-removing ball from the ball storage box (3) to the pump body (2). The ball storage box (3) is equipped with a ball-lifting assembly, which is used to lift the remaining dewax-removing balls when one of the dewax-removing balls moves from the ball storage box (3) to the pump body (2). The box (1) is equipped with a synchronous drive assembly, which is used to drive the ball-lifting assembly and the ball-throwing assembly to move synchronously. The pitching assembly also includes a control actuator (5), which is fixedly installed on the top of the support plate (9). A support base (602) is fixedly installed on the top of the support plate (9), and a motor (6) is fixedly installed on the top of the support base (602). One end of the control actuator (5) is fixedly connected to one side of the motor (6). A rotating rod (601) is fixedly installed on the output end of the motor (6). Arc blocks (201) are symmetrically rotatably connected to the inner wall of the pump body (2). A plunger (202) is placed between two arc blocks (201). A connecting rod is symmetrically fixedly installed on the outer wall of the plunger (202). The two connecting parts (206) are slidably connected at one end to the inner wall of the two arc blocks (201), respectively. The outer wall of the rotating rod (601) is fixedly installed with a transmission wheel (204), and the inner wall of the plunger (202) is fixedly installed with a toothed plate (205). The teeth on the transmission wheel (204) mesh with the teeth on the toothed plate (205). A groove block (12) is fixedly installed on one side of each of the two arc blocks (201). A telescopic cylinder (11) is fixedly installed at one end of the rotating rod (601), and a torque rod (13) is fixedly installed at both output ends of the telescopic cylinder (11).

2. The automatic ball-throwing device according to claim 1, characterized in that: Both ends of the plunger (202) are fixedly installed with ball-pushing plates (203), and the outer walls of the two ball-pushing plates (203) can slide and connect with the inner side of the two arc blocks (201).

3. The automatic ball-throwing device according to claim 2, characterized in that: The ball lifting assembly includes a ball rack (301), and there are two ball racks (301). The two ball racks (301) are symmetrically arranged inside the ball storage box (3). The space between the two ball racks (301) is used to place clear wax balls. The ball storage box (3) is symmetrically arranged with a moving rod (304). Multiple ball lifting blocks (307) are fixedly installed on the inner side of each of the two moving rods (304). A pressure block (305) is fixedly installed at one end of each of the two moving rods (304). Multiple through holes (309) are opened on the inner wall of each of the two ball racks (301). The outer wall of the multiple ball lifting blocks (307) is slidably connected to the inner wall of the multiple through holes (309). One end of each of the two pressure blocks (305) is a sloping surface.

4. An automatic ball-throwing device according to claim 3, characterized in that: A round rod (14) is fixedly installed on the outer wall of the telescopic cylinder (11). An electronic telescopic rod (107) is slidably connected to the inner wall of one end of the round rod (14). A rotary table (106) is fixedly installed on one end of the electronic telescopic rod (107).

5. An automatic ball-throwing device according to claim 4, characterized in that: The co-drive assembly includes two shafts (101). Both ends of the two shafts (101) are rotatably connected to the inner wall of the housing (1). A threaded opening (102) is provided in the middle of the two shafts (101). Push blocks (103) are threadedly connected to the outer wall of the two threaded openings (102). One end of the two push blocks (103) is a sloping surface. One end of the two push blocks (103) can be slidably connected to one end of the two pressure blocks (305). A drive shaft (105) is fixedly installed at one end of the two shafts (101) and one end of the rotary table (106). A belt (104) is rotatably connected between the inner walls of the three drive shafts (105).

6. An automatic ball-throwing device according to claim 5, characterized in that: Two sets of sliding rods (308) are fixedly installed on the inner wall of the ball storage box (3). The inner walls of the two moving rods (304) are slidably connected to the outer walls of the two sets of sliding rods (308). Two sets of return springs (306) are symmetrically arranged between the inner wall of the box body (1) and the outer walls of the two moving rods (304). The two sets of return springs (306) are respectively placed outside the two sets of sliding rods (308).

7. An automatic ball-throwing device according to claim 6, characterized in that: The opening and closing assembly includes a rack (303), and there are two racks (303). A ball block (302) is symmetrically arranged between the top of the pump body (2) and the inner wall of the box (1). The outer walls of the two ball blocks (302) are slidably connected to the inner wall of the top of the pump body (2). One end of the two racks (303) is fixedly connected to the outer walls of the two ball blocks (302). Gears (3010) are symmetrically arranged on the inner wall of the box (1). The teeth of the two gears (3010) mesh with the teeth on the two shift rods (304) and the racks (303), respectively. The outer walls of the two arc blocks (201) can be slidably connected to the bottom of the two ball blocks (302).

8. An automatic ball-throwing device according to claim 7, characterized in that: A controller (10) is fixedly installed on one side of the ball storage box (3).

9. An automatic ball-throwing device according to claim 8, characterized in that: A hydraulic cylinder (8) is fixedly installed on the other side of the ball storage box (3). A strip plate (801) is fixedly installed at the output end of the hydraulic cylinder (8). Connecting rods (802) are symmetrically fixedly installed on the outer walls of the two ball racks (301). One end of the four connecting rods (802) is connected to the inner wall of the two strip plates (801). The bottom ends of the two ball racks (301) are slidably connected to the inner walls of the two ball blocking blocks (302).

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