Fracturing ball device

Abstract

The present invention relates to the technical field of fracturing ball-throwing devices, and is a fracturing ball-throwing device, comprising a mounting mechanism, an elastic mechanism provided in an inner cavity of the mounting mechanism, a push-out mechanism provided at one end of the elastic mechanism, a driving mechanism provided above the mounting mechanism, the driving mechanism being able to retract the push-out mechanism to store force by driving the elastic mechanism, a disengaging mechanism provided at the lower side of the driving mechanism, the disengaging mechanism being able to release the retracted and stored force state of the push-out mechanism so that it extends out to push out a temporary blocking ball, a ball storage mechanism provided at the upper side of the mounting mechanism, a linkage member connected to the ball outlet end of the ball storage mechanism in a transmission manner with the driving mechanism. The present invention has a reasonable and compact structure and is easy to use, and the cooperation between the ball storage mechanism and the linkage member allows a single temporary blocking ball to be dropped at a time, and then the temporary blocking ball is knocked out by the cooperation of the elastic mechanism, the push-out mechanism, the driving mechanism, and the disengaging mechanism, thereby improving the stability of the temporary blocking ball when it pops out and the ball-throwing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of fracturing ball throwing devices, in particular to a fracturing ball throwing device. Background Art

[0002] In the oil and gas industry, fracturing refers to the use of hydraulic pressure to create cracks in oil and gas layers during oil or gas production. Fracturing artificially creates cracks in the formation, improving the flow of oil underground and increasing well production. It plays a crucial role in improving bottomhole flow conditions, mitigating interlayer friction, and improving reservoir production.

[0003] In the prior art, a Chinese utility model patent with publication number CN211038579U discloses a temporary plugging ball throwing device for oilfield acid fracturing, comprising a ball throwing cavity, a fixed plate welded to four sides of the inner wall of the ball throwing cavity, sliding openings for telescopic rods on both sides of the fixed plate, a compression mechanism provided on the inner wall at one end of the ball throwing cavity, a ball pushing mechanism provided on the inner wall at the other end of the ball throwing cavity, an elastic observation mechanism provided on the top end of the ball throwing cavity, and a pressure ball cutting mechanism provided on the other end of the ball throwing cavity; a temporary plugging ball ejection outlet provided on one side of the ball throwing cavity, and a ball outlet provided on the inner wall at the bottom of the ball throwing cavity The bottom outer wall of the ball-throwing cavity is welded to one end of a temporary blocking ball upper tube, and a ball-throwing mechanism is provided on the inner wall of the temporary blocking ball upper tube. The bottom inner wall of the temporary blocking ball upper tube is threaded. The pressure ball-cutting mechanism includes a hydraulic cylinder fixing box welded to one end of the top outer wall of the ball-throwing cavity. A second hydraulic cylinder is fixed to the top inner wall of the hydraulic cylinder fixing box via screws. A telescopic rod opening is provided at one end of the top of the ball-throwing cavity, and a lower cutting block is threadedly connected to one end of the telescopic rod of the second hydraulic cylinder. The ball-pushing mechanism includes a push rod, a push plate is threadedly connected to the other end of the push rod, and a stopper is welded to the outer wall of one end of the push rod. This utility model provides a first hydraulic cylinder, and the telescopic rod of the first hydraulic cylinder is extended and retracted to control the compression degree of the ball-throwing spring, thereby adjusting the force with which the temporary blocking ball is ejected, making it convenient to use the temporary blocking ball at different speeds.

[0004] Although the pitching device in the above technical solution is convenient for adjusting the force of pitching, the following deficiencies still exist in this technical solution: the pitching device uses the elasticity of the spring to lift the ball during the ball throwing process, and the lower layer of balls will increase the pressure on the ball to be ejected, affecting the ejection stability of the temporarily blocked ball, and the temporarily blocked balls in the lower layer may slow down the thrust of part of the ball pushing plate, affecting the ejection force of the temporarily blocked ball. At the same time, when the number of temporarily blocked balls is large, the ball pushed out by the ball pushing plate will be affected by the temporarily blocked balls in the lower layer, and thus hit the edge of the ejection outlet when ejecting, affecting the accuracy of the ejection angle of the temporarily blocked ball. Summary of the Invention

[0005] The present invention provides a ball - throwing device for fracturing, which overcomes the deficiencies of the above - mentioned prior art and can effectively solve the problem of insufficient accuracy of the ejection angle of the temporary plugging ball in the existing ball - throwing device.

[0006] The technical solution of the present invention is achieved by the following measures: A ball - throwing device for fracturing includes an installation mechanism. Inside the cavity of the installation mechanism, there is an elastic mechanism. One end of the elastic mechanism is installed with a pushing - out mechanism. Above the installation mechanism, there is a driving mechanism. The driving mechanism can retract and store energy for the pushing - out mechanism by driving the elastic mechanism. Below the driving mechanism, there is a unlocking mechanism. The unlocking mechanism can release the retracted and stored - energy state of the pushing - out mechanism to make it extend and eject the temporary plugging ball. On the upper side of the installation mechanism, there is a ball - storage mechanism connected in a communicating way. The ball - outlet end of the ball - storage mechanism is provided with a linkage member传动连接 which is传动连接 with the driving mechanism. The linkage member can make one temporary plugging ball fall into the installation mechanism each time.

[0007] The following is a further optimization or / and improvement of the above - mentioned invention technical solution:

[0008] Preferably, the installation mechanism includes an installation square tube. The elastic mechanism is installed inside the installation square tube. The elastic mechanism includes a telescopic outer cylinder, a telescopic inner rod, and a pop - up spring. The telescopic inner rod is slidably inserted into one end of the telescopic outer cylinder. The pushing - out mechanism includes a push rod and a push plate. The other end of the telescopic outer cylinder is installed with the push plate. The right end of the push plate is installed with the push rod. Between the inner wall of the installation square tube and the push plate, there is a pop - up spring sleeved on the outer sides of the telescopic outer cylinder and the telescopic inner rod. On the upper side of the middle part of the push plate, there is a convex block fixedly installed. On the upper side of the installation square tube, there is a through - hole inner - outer chute. The middle part of the convex block can slide in the chute. On the front side and the rear side of the push plate, there are symmetric limiting blocks. Inside the installation square tube, there are limiting grooves matching the two limiting blocks.

[0009] Preferably, the driving mechanism includes a screw rod, a motor, a moving block, and a dialing block. The motor is传动连接 with the screw rod. The moving block is threadedly connected to the screw rod. On the lower right side of the moving block, there is an installation groove. The upper part of the dialing block is slidably connected in the installation groove. On the front side and the rear side of the upper part of the dialing block, there are side blocks fixedly connected. On the upper parts of the front and rear sides of the installation groove, there are side grooves for the side blocks to slide and connect. On the upper right side of the dialing block, there is a top beam fixedly installed. Between the upper side of the dialing block and the upper side of the installation groove, there is a return spring installed. The lower right end of the dialing block is rounded. The upper left end of the convex block is rounded. The lower right end of the dialing block and the upper left end of the convex block can contact.

[0010] Preferably, the unlocking mechanism includes a cylinder and a pushing frame. The cylinder is arranged directly below the motor. The telescopic end of the cylinder is fixedly connected to the pushing frame. The pushing frame is arranged in a U - shape with an opening to the right. The upper side of the pushing frame is an inclined plane that slopes from left to right. The inclined plane can抵触 with the lower side of the top beam.

[0011] It should be noted that in the above translation, "传动连接" is left in Chinese because it's not clear what the specific English expression should be based on the context. It might be something like "drivably connected" or other more accurate terms depending on the specific mechanical connection relationship described in the patent.Preferably, the ball storage mechanism includes a guide square tube and a ball storage bucket. The ball storage bucket is fixedly connected to the upper end of the guide square tube. The left and right sides of the lower end of the guide square tube are fixedly connected to a docking plate. A second fixing bolt bolted to the mounting square tube is installed on the docking plate. The mounting square tube is provided with a conical ball groove connected to the guide square tube.

[0012] Preferably, the linkage includes a connecting angle plate, a lower blocking plate and an upper blocking plate, the lower blocking plate and the upper blocking plate are spaced apart in an upper and lower manner, the spacing between the lower blocking plate and the upper blocking plate is greater than the diameter of the temporary blocking ball, the lower blocking plate and the upper blocking plate are connected by an inverted L-shaped connecting angle plate, the front and rear sides of the guide square tube are respectively provided with sockets for the lower blocking plate and the upper plate to be plugged in, the other end of the screw is rotatably installed on the outside of the guide square tube, the screw is transmission-installed with a drive gear near the guide square tube, a transmission gear is rotatably installed on the outside of the guide square tube, the drive gear is meshed with the transmission gear, a tooth portion is provided on the connecting angle plate at the upper side of the transmission gear, the transmission gear is meshed with the tooth portion.

[0013] Preferably, a buffer part is also included. Two groups of buffer parts are provided between the right side of the two limit blocks and the right side of the limit groove. The buffer part includes a telescopic sleeve and a disc fixedly connected to the two ends of the telescopic sleeve. A buffer spring is installed between the discs at both ends and is sleeved on the outside of the telescopic sleeve.

[0014] Preferably, the mounting mechanism also includes a detachable end cover and a detachable extension tube, the end cover is provided with multiple groups of first fixing bolts bolted to the mounting square tube, the other side of the end cover is provided with a spring seat for pop-up spring installation, one end of the extension tube is provided with a connecting screw ring, the right end of the mounting square tube is provided with a connecting screw hole, the extension tube is threadedly connected to the connecting screw hole through the connecting screw ring, the inner cavity of the mounting square tube is cylindrical, the inner wall of the mounting square tube is fixedly connected to a guide tube for sliding insertion of the push rod, and the lower surface of the mounting square tube is detachably connected to two groups of support frames; or / and, it also includes a protective mechanism, the protective mechanism includes a protective cover and a visual panel installed on the upper end surface of the protective cover, a protective cover is provided on the upper side of the mounting square tube, a guide groove running through the upper and lower parts is provided in the middle of the upper end surface of the protective cover, the upper part of the moving block is located in the guide groove, and the upper ends of the front and rear sides of the protective cover are provided with scale grooves for reading the moving distance of the ejection mechanism.

[0015] The present invention has a reasonable and compact structure and is easy to use. The cooperation between the ball storage mechanism and the linkage part can drop a single temporarily blocked ball at a time, and then the temporarily blocked ball is knocked out through the cooperation of the elastic mechanism, the pushing mechanism, the driving mechanism, and the unlocking mechanism, thereby improving the stability of the temporarily blocked ball when it is ejected and the pitching efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attachment Figure 1 Schematic diagram of the three-dimensional structure of an embodiment of the present invention.

[0017] Attachment Figure 2For attachment Figure 1 Schematic diagram of the cross-sectional structure.

[0018] Attachment Figure 3 It is a schematic diagram of the cross-sectional enlarged structure of the driving mechanism.

[0019] Attachment Figure 4 It is a partial cross-sectional enlarged structural schematic diagram of the ball storage mechanism.

[0020] Attachment Figure 5 It is a schematic diagram of the cross-sectional enlarged structure of the installation mechanism.

[0021] Attachment Figure 6 It is a schematic diagram of the enlarged structure of the ejection mechanism.

[0022] Attachment Figure 7 It is a schematic diagram of the enlarged structure of the linkage.

[0023] Attachment Figure 8 This is an enlarged structural diagram of the buffer.

[0024] The codes in the attached drawings are as follows: 1. Mounting mechanism; 101. Mounting square tube; 102. End cover; 103. First fixing bolt; 104. Spring seat; 105. Extension tube; 106. Connecting screw ring; 107. Connecting screw hole; 108. Guide tube; 109. Limiting groove; 110. Slide groove; 2. Protection mechanism; 21. Protection cover; 22. Guide groove; 23. Scale groove; 24. Visual panel; 3. Driving mechanism; 31. Screw; 32. Motor; 33. Driving gear; 34. Moving block; 35. Mounting groove; 36. Side groove; 37. Shifting block; 38. Side block; 39. Top beam; 4. Unlocking mechanism ;41. Cylinder;42. Push rack;43. Inclined surface;5. Ball storage mechanism;51. Guide square tube;52. Ball storage bucket;53. Docking plate;54. Second fixing bolt;55. Socket;56. Transmission gear;6. Linkage;61. Lower blocking plate;62. Upper blocking plate;63. Connecting angle plate;64. Tooth portion;7. Elastic mechanism;71. Telescopic outer cylinder;72. Telescopic inner rod;73. Pop-up spring;8. Push mechanism;81. Push rod;82. Push plate;83. Limit block;84. Bump;9. Buffer;91. Telescopic sleeve;92. Disc;93. Buffer spring;10. Support frame. DETAILED DESCRIPTION

[0025] The present invention is not limited to the following embodiments, and specific implementation methods can be determined based on the technical solutions of the present invention and actual conditions.

[0026] In the present invention, for the convenience of description, the relative position relationship of each component is described based on the Figure 1For example, the positional relationships of front, back, up, down, left, and right are determined according to the layout directions of the drawings in the specification.

[0027] The present invention will be further described below in conjunction with the embodiments and accompanying drawings:

[0028] Example 1: As shown in the attached Figure 1-8 As shown, the fracturing ball throwing device includes a mounting mechanism 1, an elastic mechanism 7 is provided in the inner cavity of the mounting mechanism 1, and a pushing mechanism 8 is installed at one end of the elastic mechanism 7. A driving mechanism 3 is provided above the mounting mechanism 1, and the driving mechanism 3 can retract the pushing mechanism 8 to store force by driving the elastic mechanism 7. A disengaging mechanism 4 is provided on the lower side of the driving mechanism 3, and the disengaging mechanism 4 can release the retracted and stored force state of the pushing mechanism 8 to make it extend and push out the temporary blocking ball. A ball storage mechanism 5 is provided on the upper side of the mounting mechanism 1, and a linkage part 6 is provided at the ball outlet end of the ball storage mechanism 5 to be transmission-connected to the driving mechanism 3. The linkage part 6 can make the temporary blocking ball fall into the mounting mechanism 1 one at a time.

[0029] The driving mechanism 3, the ball storage mechanism 5 and the linkage member 6 cooperate with each other to drop a single temporarily blocked ball at a time, thereby preventing the temporarily blocked ball from being affected by other temporarily blocked balls at the moment of popping out, and then the elastic mechanism 7, the pushing mechanism 8, the driving mechanism 3 and the unlocking mechanism 4 cooperate to knock out the dropped single temporarily blocked ball, thereby improving the accuracy of the temporarily blocked ball when it pops out and the pitching efficiency, and solving the problem of insufficient accuracy of the ejection angle caused by the temporary blocked ball being affected during pitching.

[0030] The above-mentioned fracturing ball throwing device can be further optimized and / or improved according to actual needs:

[0031] Example 2: As shown in the attached Figure 2 、 6 As shown, the mounting mechanism 1 includes a mounting square tube 101, the elastic mechanism 7 is mounted in the mounting square tube 101, the elastic mechanism 7 includes a telescopic outer tube 71, a telescopic inner rod 72 and a pop-up spring 73, the telescopic inner rod 72 is slidably inserted into one end of the telescopic outer tube 71, the pushing mechanism 8 includes a push rod 81 and a push plate 82, the other end of the telescopic outer tube 71 is installed with a push plate 82, and the right end of the push plate 82 is installed with a push rod 81. Between the inner wall of the mounting square tube 101 and the push plate 82, a pop-up spring 73 is installed which is sleeved on the outer side of the telescopic outer tube 71 and the telescopic inner rod 72, and a protrusion 84 is fixedly mounted on the upper middle side of the push plate 82. The upper side of the mounting square tube 101 is provided with a sliding groove 110 which passes through the inside and outside, and the middle part of the protrusion 84 can slide in the sliding groove 110. Symmetrical limit blocks 83 are provided on the front and rear sides of the push plate 82, and a limit groove 109 matching the two limit blocks 83 is provided on the inside of the mounting square tube 101.

[0032] When the projection 84 moves leftward, the push plate 82 slides along the limiting groove 109 within the mounting square tube 101. The pop-up spring 73 is compressed, increasing its elastic potential energy. The unlocking mechanism 4 is able to release the position restriction of the projection 84, thereby releasing the pop-up spring 73. The elastic potential energy of the pop-up spring 73 is released and reduced. During this process, the limiting block 83 on the push plate 82 slides rightward along the limiting groove 109, and the push rod 81 quickly strikes the temporarily blocked ball, causing it to be quickly released, thereby achieving the release of the temporarily blocked ball. The limiting groove 109 prevents the push plate 82 from rotating during movement, thereby guiding the movement path of the push rod 81 and controlling the pitching accuracy. By controlling the distance that the projection 84 moves, the potential energy accumulated in the pop-up spring 73 is controlled, thereby controlling the impact force of the push rod 81 on the temporarily blocked ball.

[0033] Example 3: As shown in the attached Figure 3 As shown, the driving mechanism 3 includes a screw 31, a motor 32, a moving block 34, and a shift block 37. The motor 32 is connected to the screw 31 for transmission. The moving block 34 is threadedly connected to the screw 31. A mounting groove 35 is provided on the right side of the lower end of the moving block 34. The upper part of the shift block 37 is slidably connected in the mounting groove 35. The front and rear sides of the upper part of the shift block 37 are fixedly connected to side blocks 38. The upper parts of the front and rear sides of the mounting groove 35 are provided with side grooves 36 for the sliding connection of the side blocks 38. A top beam 39 is fixedly installed on the upper right side of the shift block 37. A return spring is installed between the upper side of the shift block 37 and the upper side of the mounting groove 35. The lower right end of the shift block 37 is rounded, and the upper left end of the protrusion 84 is rounded. The lower right end of the shift block 37 can contact the upper left end of the protrusion 84.

[0034] The starting motor 32 drives the screw 31 to drive the moving block 34 to move to the right, and the lower right end of the shift block 37 contacts the upper left end of the protrusion 84. Due to the rounded corners, the shift block 37 is squeezed and the return spring is compressed to move it upward, so that it can slide over the upper left end of the protrusion 84 and be located to the right of the protrusion 84 during the movement of the shift block 37 to the right. The moving block 34 is controlled to move to the left according to the distance that the temporary blocking ball needs to be released. The moving block 34 moves to the left, driving the shift block 37 to move to the left. The left side of the shift block 37 pushes the right side of the protrusion 84 to the specified position, thereby compressing the pop-up spring 73 to accumulate elastic potential energy.

[0035] Example 4: As shown in the attached Figure 2 、 3As shown in the figure, the unlocking mechanism 4 includes a cylinder 41 and a push frame 42. The cylinder 41 is arranged directly below the motor 32, and the telescopic end of the cylinder 41 is fixedly connected to the push frame 42. The push frame 42 is arranged in a U shape with an opening to the right. The upper side of the push frame 42 is an inclined surface 43 that slopes from left to right, and the inclined surface 43 can abut against the lower side of the top beam 39. When the convex block 84 moves to a specified position under the push of the dial block 37 and compresses the ejection spring 73 to store elastic potential energy, the cylinder 41 drives the push frame 42 to move below the screw 31. The inclined surface 43 abuts against the lower side of the top beam 39. The dial block 37 is located in the middle cavity of the push frame 42, and the push frame 42 continues to move to the right to raise the top beam 39 along the inclined surface 43. The top beam 39 then drives the dial block 37 to move upward until the dial block 37 is located above the convex block 84, thus releasing the position restriction of the convex block 84, thereby releasing the ejection spring 73. The push rod 81 quickly strikes the temporary blocking ball to complete the ball throwing action.

[0036] Embodiment 5: As shown in the attached Figure 1 、 2 、Figure 4, the ball storage mechanism 5 includes a guiding square tube 51 and a ball storage hopper 52. The ball storage hopper 52 is fixedly connected to the upper end of the guiding square tube 51. Docking plates 53 are fixedly connected to the left and right sides of the lower end of the guiding square tube 51. A second fixing bolt 54 for bolting to the mounting square tube 101 is installed on the docking plate 53. A conical ball inlet groove communicating with the guiding square tube 51 is provided on the mounting square tube 101. Through the ball storage hopper 52, it is convenient to store more temporary blocking balls. The temporary blocking balls fall one by one along the guiding square tube 51 under the action of gravity and are filled in the guiding square tube 51 and enter the conical ball inlet groove in the mounting square tube 101.

[0037] Embodiment 6: As shown in the attached Figure 2 、 4 、Figure 7, the linkage member 6 includes a connecting angle plate 63, a lower blocking plate 61 and an upper blocking plate 62. The lower blocking plate 61 and the upper blocking plate 62 are arranged at intervals up and down. The distance between the lower blocking plate 61 and the upper blocking plate 62 is greater than the diameter of the temporary blocking ball. The lower blocking plate 61 and the upper blocking plate 62 are connected by an inverted L-shaped connecting angle plate 63. Insertion holes 55 for inserting the lower blocking plate 61 and the upper blocking plate 62 are respectively provided on the front and rear sides of the guiding square tube 51. The other end of the screw 31 is rotatably installed outside the guiding square tube 51. A driving gear 33 is drivingly installed near the guiding square tube 51 on the screw 31. A transmission gear 56 is rotatably installed outside the guiding square tube 51. The driving gear 33 meshes with the transmission gear 56. A tooth portion 64 is provided on the connecting angle plate 63 at the upper side position of the transmission gear 56. The transmission gear 56 meshes with the tooth portion 64.

[0038] In the initial state, the temporary blocking balls are filled in the guiding square tube 51 under the action of gravity, the temporary blocking ball at the bottom is located on the lower blocking plate 61, the moving block 34 is located at the end of the screw 31 away from the motor 32, and the pop-up spring 73 is in a relaxed state. When the force is accumulated before the ball is thrown, the motor 32 is started to drive the screw 31 to drive the moving block 34 and the shift block 37 to push the protrusion 84 to the left to compress the pop-up spring 73, and the driving gear 33 drives the transmission gear 56 to engage with the tooth portion 64, pushing the connecting angle plate 63 to move backward, so that the upper blocking plate 62 moves backward and is inserted between the two groups of temporary blocking balls on the upper side of the temporary blocking ball at the bottom. The lower blocking plate 61 moves backward to release the support for the temporary blocking ball at the bottom, so that the temporary blocking ball falls into the mounting square tube 101 through the conical ball groove, and the push rod 81 will push the conical ball into the After the temporary blocking ball in the groove hits the pitching ball, it is reset. The specific process is that the motor 32 drives the screw 31 to reset the position of the moving block 34, and the driving gear 33 engages the transmission gear 56 again to drive the connecting angle plate 63 to reset forward, the upper blocking plate 62 is pulled forward, and the lower blocking plate 61 is inserted forward, so that the temporary blocking ball on the upper side of the upper blocking plate 62 falls on the lower blocking plate 61, preparing for the next pitching. By setting a linkage part 6 linked to the driving mechanism 3, the bottom temporarily blocked ball can be released when the ball is needed, and the upper blocking plate 62 can support the temporarily blocked ball adjacent to the bottom temporarily blocked ball, so that the upper temporarily blocked ball will not affect the falling temporarily blocked ball, thereby not affecting the projection angle and accuracy, and can maintain a more stable projection with higher efficiency and better projection accuracy.

[0039] Example 7: As shown in the attached Figure 2 、 8 As shown, the device further includes a buffer member 9. Two sets of buffer members 9 are provided between the right sides of the two limit blocks 83 and the right side of the limit slot 109. The buffer member 9 comprises a telescopic sleeve 91 and a disc 92 fixedly connected to each end of the telescopic sleeve 91. A buffer spring 93 is mounted between the discs 92 at both ends and is sleeved on the outside of the telescopic sleeve 91. When the protrusion 84 is released, the push plate 82 and the push rod 81 are ejected to the right by the restoring force of the ejection spring 73. To prevent the push plate 82 from violently colliding with the right side of the limit slot 109, the buffer member 9 is used to provide a buffer for the push plate 82, thereby increasing the service life of the device as a whole.

[0040] Example 8: As shown in the attached Figure 5As shown, the mounting mechanism 1 also includes a detachable end cover 102 and a detachable extension tube 105. The end cover 102 is provided with multiple groups of first fixing bolts 103 bolted to the mounting square tube 101. The other side of the end cover 102 is provided with a spring seat 104 for installing the pop-up spring 73. One end of the extension tube 105 is provided with a connecting screw ring 106. The right end of the mounting square tube 101 is provided with a connecting screw hole 107. The extension tube 105 is threadedly connected to the connecting screw hole 107 through the connecting screw ring 106. The inner cavity of the mounting square tube 101 is cylindrical. The inner wall of the mounting square tube 101 is fixedly connected to a guide tube 108 for sliding insertion of the push rod 81. The lower surface of the mounting square tube 101 is detachably connected to two groups of support frames 10.

[0041] The guide tube 108 is used to limit the push rod 81, thereby ensuring the stability of the push rod 81 in pushing the temporary blocking ball. The extension tube 105 is used to adjust the release distance of the temporary blocking ball. At the same time, the end cover 102 is easily disassembled to improve the maintenance efficiency of the device and reduce the difficulty of maintenance.

[0042] Example 9: As shown in the attached Figure 3 As shown, the protective mechanism 2 is also included. The protective mechanism 2 includes a protective cover 21 and a visual panel 24 mounted on the upper end surface of the protective cover 21. The protective cover 21 is provided on the upper side of the mounting square tube 101. A guide groove 22 extending vertically through the middle of the upper end surface of the protective cover 21 is provided. The upper portion of the movable block 34 is located within the guide groove 22. The upper ends of the front and rear sides of the protective cover 21 are each provided with a graduated groove 23 for reading the travel distance of the ejection mechanism 8. The visual panel 24 is a transparent hard plastic plate. The position of the movable block 34 can be easily observed through the visual panel 24. The graduated groove 23 can indicate the specific position of the movable block 34, thereby determining the length of the ejection spring 73 compressed by the push plate 82, thereby facilitating control of the ejection force. At the same time, the guide groove 22 improves the stability of the movement of the movable block 34.

[0043] Example 10: The working process is as follows: When in use, the temporary blocking ball is placed in the ball storage hopper 52. The temporary blocking ball is quickly filled in the guide square tube 51 under the action of gravity. The temporary blocking ball at the lower end is located on the lower blocking plate 61. At this time, the moving block 34 is located at the end of the screw 31 away from the motor 32. The pop-up spring 73 is in a relaxed state. The push rod 81 hits one end of the temporary blocking ball and penetrates the conical ball groove. The motor 32 is started to drive the screw 31 to drive the moving block 34 to slide in the guide groove 22. The moving block 34 is controlled to move to the specified position according to the distance the temporary blocking ball needs to be placed. Through the scale groove 23 For distance control, during the movement of the moving block 34, the shifting block 37 contacts the protruding block 84, causing the push plate 82 to slide in the installation square tube 101. The pop-up spring 73 is compressed to increase the elastic potential energy. At the same time, the striking end of the push rod 81 is stored in the guide cylinder 108. The screw 31 drives the moving block 34 and drives the transmission gear 56 to engage with the tooth portion 64 through the driving gear 33, thereby inserting the upper blocking plate 62 between the two groups of temporary blocking balls, supporting and limiting the temporary blocking balls on the upper layer. The lower blocking plate 61 releases its support for the temporary blocking balls, allowing the temporary blocking balls to fall into the installation square tube 101 through the ball groove.

[0044] When the temporarily blocked ball is released, the cylinder 41 drives the push frame 42 to slide along the inner wall of the protective cover 21, so that the inclined surface 43 of the push frame 42 contacts the top beam 39 of the shift block 37, and the top beam 39 rises along the inclined surface 43 and causes the shift block 37 to separate from the protrusion 84, thereby releasing the limit on the protrusion 84, and the elastic potential energy of the pop-up spring 73 is released and reduced. During this process, the limit block 83 on the push plate 82 slides along the limit groove 109, and the push rod 81 quickly penetrates the guide cylinder 108 and hits the temporarily blocked ball, so that the temporarily blocked ball is quickly thrown out, thereby realizing the delivery of the temporarily blocked ball, and the delivery process will not be affected by the other temporarily blocked balls, and the delivery accuracy will not be greatly affected by the outlet during the delivery process, thereby improving the delivery efficiency of the temporarily blocked ball;

[0045] After a group of temporarily blocked balls is released, the motor 32 drives the screw 31 to reset the position of the moving block 34, and the driving gear 33 engages the transmission gear 56 again to drive the connecting angle plate 63 to reset. The upper blocking plate 62 is withdrawn, and the lower blocking plate 61 blocks the temporarily blocked balls, completing the storage of the next group of temporarily blocked balls. When the dial block 37 is located to the right of the protrusion 84, the pop-up spring 73 is in a relaxed state, which is convenient for the next ball release.

[0046] Repeating the above operation can realize continuous delivery of temporary blocking balls, thereby improving the delivery efficiency of temporary blocking balls.

[0047] The above technical features respectively constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

Claims

1. A ball throwing device for fracturing, characterized in that It includes an installation mechanism. Inside the cavity of the installation mechanism, there is an elastic mechanism. One end of the elastic mechanism is equipped with a pushing mechanism. Above the installation mechanism, there is a driving mechanism. The driving mechanism can retract and store energy for the pushing mechanism by driving the elastic mechanism. Below the driving mechanism, there is a unlocking mechanism. The unlocking mechanism can release the retracted and stored energy state of the pushing mechanism to make it extend and push out a temporary blocking ball. On the upper side of the installation mechanism, there is a ball storage mechanism connected in a communicating way. The ball storage mechanism includes a guiding square tube and a ball storage hopper. The ball storage hopper is fixedly connected to the upper end of the guiding square tube. On the left and right sides of the lower end of the guiding square tube, docking plates are fixedly connected. On the docking plates, there are second fixing bolts bolted to the installation mechanism. On the installation mechanism, there is a conical ball inlet groove connected to the guiding square tube. At the ball outlet end of the ball storage mechanism, there is a linkage member传动连接 with the driving mechanism. The linkage member can make a single temporary blocking ball fall into the installation mechanism; the linkage member includes a connecting angle plate, a lower blocking plate and an upper blocking plate. The lower blocking plate and the upper blocking plate are arranged at an interval up and down. The distance between the lower blocking plate and the upper blocking plate is greater than the diameter of the temporary blocking ball. The lower blocking plate and the upper blocking plate are connected by an inverted L-shaped connecting angle plate. On the front and rear sides of the guiding square tube, there are insertion holes for the lower blocking plate and the upper blocking plate to be inserted. On the outer side of the guiding square tube, a transmission gear is rotatably installed. On the connecting angle plate at the upper side position of the transmission gear, there is a tooth part. The transmission gear meshes with the tooth part.

2. The fracturing ball throwing device according to claim 1, characterized in that The installation mechanism includes an installation square tube. The elastic mechanism is installed inside the installation square tube. The elastic mechanism includes a telescopic outer cylinder, a telescopic inner rod and a pop-up spring. The telescopic inner rod is slidably inserted into one end of the telescopic outer cylinder. The pushing mechanism includes a push rod and a push plate. The other end of the telescopic outer cylinder is equipped with a push plate. The right end of the push plate is equipped with a push rod. Between the inner wall of the installation square tube and the push plate, there is a pop-up spring sleeved on the outer sides of the telescopic outer cylinder and the telescopic inner rod. On the upper side of the middle part of the push plate, a convex block is fixedly installed. On the upper side of the installation square tube, there is a through groove inside and outside. The middle part of the convex block can slide in the groove. On the front and rear sides of the push plate, there are symmetrical limiting blocks. Inside the installation square tube, there are limiting grooves matching the two limiting blocks.

3. The fracturing ball throwing device according to claim 2, characterized in that The driving mechanism includes a screw rod, a motor, a moving block and a dialing block. The motor is传动连接 with the screw rod. The moving block is threadedly connected to the screw rod. On the right side of the lower end of the moving block, there is an installation groove. The upper part of the dialing block is slidably connected in the installation groove. On the front and rear sides of the upper part of the dialing block, side blocks are fixedly connected. On the upper parts of the front and rear sides of the installation groove, there are side grooves for the side blocks to be slidably connected. On the upper right side of the dialing block, a top beam is fixedly installed. Between the upper side of the dialing block and the upper side of the installation groove, there is a reset spring. The right lower end of the dialing block is rounded. The left upper end of the convex block is rounded. The right lower end of the dialing block and the left upper end of the convex block can contact; the other end of the screw rod is rotatably installed on the outer side of the guiding square tube. Near the guiding square tube, a driving gear is传动安装 on the screw rod. The driving gear meshes with the transmission gear.

4. The fracturing ball throwing device according to claim 3, characterized in that The unlocking mechanism includes a cylinder and a pushing frame. The cylinder is arranged directly below the motor. The telescopic end of the cylinder is fixedly connected to the pushing frame. The pushing frame is arranged in a U shape with an opening to the right. The upper side of the pushing frame is an inclined surface in a left-high and right-low shape. The inclined surface can抵触 with the lower side of the top beam.

5. The fracturing ball throwing device according to claim 2, 3 or 4, characterized in that It also includes a buffer part. Two groups of buffer parts are provided between the right side of the two limit blocks and the right side of the limit slot. The buffer part includes a telescopic sleeve and a disc fixedly connected to the two ends of the telescopic sleeve. A buffer spring is installed between the two ends of the disc and is sleeved on the outside of the telescopic sleeve.

6. The fracturing ball throwing device according to claim 5, characterized in that It also includes a buffer part. Two groups of buffer parts are provided between the right side of the two limit blocks and the right side of the limit slot. The buffer part includes a telescopic sleeve and a disc fixedly connected to the two ends of the telescopic sleeve. A buffer spring is installed between the two ends of the disc and is sleeved on the outside of the telescopic sleeve.

7. The fracturing ball throwing device according to claim 3, 4 or 6, characterized in that The mounting mechanism also includes a detachable end cover and a detachable extension tube, the end cover is provided with multiple groups of first fixing bolts bolted to the mounting square tube, the other side of the end cover is provided with a spring seat for pop-up spring installation, one end of the extension tube is provided with a connecting screw ring, the right end of the mounting square tube is provided with a connecting screw hole, the extension tube is threadedly connected to the connecting screw hole through the connecting screw ring, the inner cavity of the mounting square tube is cylindrical, the inner wall of the mounting square tube is fixedly connected to a guide tube for sliding insertion of the push rod, and the lower surface of the mounting square tube is detachably connected to two groups of support frames; or / and, also includes a protective mechanism, the protective mechanism includes a protective cover and a visual panel installed on the upper end surface of the protective cover, a protective cover is provided on the upper side of the mounting square tube, a guide groove that runs through the upper and lower parts is provided in the middle of the upper end surface of the protective cover, the upper part of the moving block is located in the guide groove, and the upper ends of the front and rear sides of the protective cover are provided with scale grooves for reading the moving distance of the ejection mechanism.

8. The fracturing ball throwing device according to claim 5, characterized in that The mounting mechanism also includes a detachable end cover and a detachable extension tube, the end cover is provided with multiple groups of first fixing bolts bolted to the mounting square tube, the other side of the end cover is provided with a spring seat for pop-up spring installation, one end of the extension tube is provided with a connecting screw ring, the right end of the mounting square tube is provided with a connecting screw hole, the extension tube is threadedly connected to the connecting screw hole through the connecting screw ring, the inner cavity of the mounting square tube is cylindrical, the inner wall of the mounting square tube is fixedly connected to a guide tube for sliding insertion of the push rod, and the lower surface of the mounting square tube is detachably connected to two groups of support frames; or / and, also includes a protective mechanism, the protective mechanism includes a protective cover and a visual panel installed on the upper end surface of the protective cover, a protective cover is provided on the upper side of the mounting square tube, a guide groove that runs through the upper and lower parts is provided in the middle of the upper end surface of the protective cover, the upper part of the moving block is located in the guide groove, and the upper ends of the front and rear sides of the protective cover are provided with scale grooves for reading the moving distance of the ejection mechanism.

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