CN212337232U - Automatic ball injector for oil field underground - Google Patents

Abstract

The utility model relates to the technical field of oilfield machinery, in particular to an automatic ball-throwing device under an oilfield; comprises an upper joint, an outer cylinder, a lower joint and a positioning sleeve; the upper joint is fixedly mounted with the outer barrel, the outer barrel is fixedly mounted with the lower joint, the positioning sleeve is located on the lower portion of the inner cavity of the upper joint, the ball storage barrel is fixedly mounted on the left portion of the inner cavity of the outer barrel, the bottom plug is fixedly mounted on the inner side of the lower end of the ball storage barrel, the guide sleeve is fixedly mounted on the right portion of the inner cavity of the outer barrel, corresponding ball holes are respectively formed in the right side of the lower portion of the ball storage barrel and the left side of the lower portion of the guide sleeve, and the lower end of the crank shaft penetrates through the positioning sleeve and is. The utility model has the advantages of reasonable and compact structure, convenient to use, fine realization need not to provide the purpose that the sucker rod can the layer change, have safe and reliable's characteristics, made things convenient for the operation, improved work efficiency, greatly reduced operating personnel's intensity of labour and measure expense, current technological requirement of satisfying that can be fine.

Description

Automatic ball injector for oil field underground

Technical Field

The utility model relates to an oil field machinery technical field is an automatic bowling device in oil field pit.

Background

Because the horizontal well has larger oil drainage area and higher recovery ratio than the conventional vertical well, in recent years, the number of the horizontal wells is more and more, the water content gradually rises along with the continuation of the production time of the horizontal well, the condition of early water breakthrough is highlighted, the recovery ratio is further reduced, even the water flooding condition of some wells occurs, and the water content of the produced liquid is more than 95 percent, so that the research and the updating of the water finding process are the premise of high-efficiency production of the horizontal well. At present, the opening of a pumping layer position and the closing of the pumped layer position are realized by using a ball throwing mode in a horizontal well mechanical subsection control water exploration process which is generally adopted at home, but due to the existence of a sucker rod, the purpose of layer changing can be completed only by lifting the sucker rod and throwing and pressing the sucker rod when the layer is changed, for a tubular column with the position of packing more than 3 layers, the sucker rod needs to be lifted and placed for more than 3 times in the water exploration process, particularly for a deep well, the working efficiency is low, time and labor are wasted, the measure cost is high, and the existing process requirements cannot be met.

Disclosure of Invention

The utility model provides an automatic bowling device in oil field pit has overcome above-mentioned prior art not enough, and it can effectively solve current mechanical segment control water exploration technology and must propose the sucker rod when trading the layer and throw again and suppress and just can accomplish the layer switching purpose, leads to work efficiency low, waste time and energy and measure the expense height, can not satisfy the problem of current technological requirement.

The technical scheme of the utility model is realized through following measure: an automatic ball injection device in an oil field underground comprises an upper joint, an outer cylinder, a lower joint, a positioning sleeve, a crank shaft, a trigger rod and a trigger rod joint; the outer side of the lower part of the upper joint and the inner side of the upper end of the outer cylinder are fixedly installed together, the inner side of the lower end of the outer cylinder and the outer side of the upper part of the lower joint are fixedly installed together, at least three connecting ribs are integrally fixed on the outer side of the positioning sleeve along the circumference at intervals, the positioning sleeve is positioned on the lower part of the inner cavity of the upper joint, the outer ends of the connecting ribs and the inner wall of the upper joint are fixedly installed together, a ball storage cylinder is fixedly installed on the left part of the inner cavity of the outer cylinder, a bottom plug is fixedly installed on the inner side of the lower end of the ball storage cylinder, a guide sleeve is fixedly installed on the right part of the inner cavity of the outer cylinder, corresponding ball holes are respectively formed in the right side of the lower part of the ball storage cylinder and the left side of the lower part of the guide sleeve, the lower end of a crank shaft penetrates through the positioning sleeve and, ball hole on the uide bushing with treat that the ball room is linked together, upper end outside an organic whole that connects at the trigger bar is fixed with the boss, interval fixed mounting has annular spring holder and orifice plate down in proper order from last in the lower part inboard of urceolus, the spring is installed in the outside of the trigger bar joint between boss and annular spring holder, the boss seat is on the spring, left side at the trigger bar joint is equipped with the guide way along the axial, fixed mounting has the locating piece on the annular spring holder, the right part of locating piece is located the guide way, the liquid flow hole that is equipped with at least one in the left part of orifice plate, be equipped with the ball hole that falls in the right part of orifice plate, the up end of end stopper, the left part up end of orifice plate and the bottom face of treating the ball room are.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the crank shaft structure further comprises a rod type pump cylinder lower ejector rod, and the lower end of the rod type pump cylinder lower ejector rod is connected with the upper end of the crank shaft.

The connecting block is integrally fixed on the left side of the upper end of the trigger rod, and the lower end of the crank shaft is fixedly connected with the connecting block through at least one screw.

The connecting plate is fixedly connected to the inner side of the upper portion of the outer barrel, the left portion and the right portion of the connecting plate are respectively provided with the left mounting hole and the right mounting hole, the upper end of the ball storage barrel is fixedly mounted in the left mounting hole of the connecting plate, and the upper end of the guide sleeve is fixedly mounted in the right mounting hole of the connecting plate.

The upper end face of the trigger rod joint is provided with a mounting blind hole, the lower end of the trigger rod is integrally fixed with a connecting column, the outer side of the connecting column and the inner side of the mounting blind hole are respectively provided with threads, and the connecting column is fixedly mounted in the mounting blind hole of the trigger rod joint through the threads; or/and the bottom end surface of the left part of the ball waiting chamber is lower than the upper end surface of the right part of the bottom plug.

A distance is reserved between the annular spring seat and the left inner wall of the outer cylinder, and the distance between the annular spring seat and the left inner wall of the outer cylinder is greater than or equal to the outer diameter of the ball storage cylinder; the left part of the annular spring seat is provided with a positioning block mounting hole, threads are arranged on the outer side of the left part of the positioning block and the inner side of the positioning block mounting hole, the left part of the positioning block is fixedly mounted in the positioning block mounting hole of the annular spring seat through the threads, the lower end of the trigger rod joint is located in the annular spring seat, and the left side of the trigger rod joint between the annular spring seat and the boss is provided with a guide groove along the axial direction.

The upper part of the upper joint is provided with an external thread or/and an internal thread, and the lower part of the lower joint is provided with an external thread or/and an internal thread; the upper joint and the outer cylinder are fixedly installed together through threads, the outer cylinder and the lower joint are fixedly installed together through threads, and the connecting ribs and the upper joint are fixedly installed together through threads; at least one sealing ring is arranged between the upper joint and the outer cylinder, and at least one sealing ring is arranged between the outer cylinder and the lower joint.

The utility model has the advantages of reasonable and compact structure, convenient to use uses through the cooperation of top connection, urceolus, lower clutch, position sleeve, crank axle, trigger bar and storage ball section of thick bamboo, has realized need not to propose the purpose that the sucker rod can the layer change, has safe and reliable's characteristics, has made things convenient for the operation, has improved work efficiency, greatly reduced operating personnel's intensity of labour and measure expense, can be fine satisfy current technological requirement.

Drawings

Fig. 1 is a schematic view of a partial sectional structure of a front view of an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along line A-A of FIG. 1.

FIG. 3 is an enlarged sectional view of the structure at B-B in FIG. 1.

FIG. 4 is an enlarged cross-sectional view at C-C of FIG. 1.

The codes in the figures are respectively: the device comprises a top joint, an outer cylinder, a lower joint, a positioning sleeve, a crankshaft, a trigger rod joint, a connecting rib, a connecting rod joint, a ball storage cylinder, a bottom plug, a guide sleeve, a ball hole, a ball waiting chamber, a ball chamber, a boss, a ring spring seat, an orifice plate, a spring, a guide groove, a positioning block, a liquid flow hole, a ball falling hole, a rod pump cylinder lower ejector rod, a connecting block, a screw, a connecting plate, a blind hole, a connecting column, a sealing ring and a low-density ball, wherein the top joint is 1, the outer cylinder is 2, the lower joint is 3, the positioning sleeve is 4, the crankshaft is 5, the trigger rod.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.

The invention will be further described with reference to the following examples and drawings:

as shown in the attached figures 1, 2, 3 and 4, the automatic ball-throwing device for the oil field underground comprises an upper joint 1, an outer cylinder 2, a lower joint 3, a positioning sleeve 4, a crank shaft 5, a trigger rod 6 and a trigger rod joint 7; the outer side of the lower part of an upper joint 1 and the inner side of the upper end of an outer cylinder 2 are fixedly installed together, the inner side of the lower end of the outer cylinder 2 and the outer side of the upper part of a lower joint 3 are fixedly installed together, at least three connecting ribs 8 are integrally fixed on the outer side of a positioning sleeve 4 along the circumference at intervals, the positioning sleeve 4 is positioned at the lower part of an inner cavity of the upper joint 1, the outer end of each connecting rib 8 and the inner wall of the upper joint 1 are fixedly installed together, a ball storage cylinder 9 is fixedly installed at the left part of the inner cavity of the outer cylinder 2, a bottom plug 10 is fixedly installed at the inner side of the lower end of the ball storage cylinder 9, a guide sleeve 11 is fixedly installed at the right part of the inner cavity of the outer cylinder 2, corresponding ball holes 12 are respectively arranged at the right side of the lower part of the ball storage cylinder 9 and the left side of the lower part of the guide sleeve 11, the lower end of a crank shaft, a ball waiting chamber 13 is arranged in the left part of the trigger rod 6 corresponding to the position of the ball hole 12, the ball hole 12 on the guide sleeve 11 is communicated with the ball waiting chamber 13, a boss 14 is integrally fixed on the outer side of the upper end of the trigger rod joint 7, an annular spring seat 15 and a pore plate 16 are sequentially and fixedly arranged on the inner side of the lower part of the outer cylinder 2 at intervals from top to bottom, a spring 17 is mounted on the outside of the trigger lever joint 7 between the boss 14 and the annular spring seat 15, the boss 14 is seated on the spring 17, a guide groove 18 is axially arranged on the left side of the trigger rod joint 7, a positioning block 19 is fixedly arranged on the annular spring seat 15, the right part of the positioning block 19 is positioned in the guide groove 18, at least one liquid flow hole 20 is arranged at the left part of the orifice plate 16, a ball falling hole 21 is arranged at the right part of the orifice plate 16, and the upper end surface of the bottom plug 10, the upper end surface of the left part of the orifice plate 16 and the bottom end surface of the ball waiting chamber 13 are all inclined surfaces with high outside and low inside. Like this, through the cooperation use of top connection 1, urceolus 2, lower clutch 3, position sleeve 4, crank axle 5, trip lever 6 and storage ball section of thick bamboo 9, realized need not to propose the purpose that the sucker rod can trade the layer, have safe and reliable's characteristics, made things convenient for the operation, improved work efficiency, greatly reduced operating personnel's intensity of labour and measure expense, can be fine satisfy current technological requirement.

The automatic ball throwing device in the oil field can be further optimized or/and improved according to actual requirements:

as shown in fig. 1, the device further comprises a rod-type pump cylinder lower ejector 22, and the lower end of the rod-type pump cylinder lower ejector 22 is connected with the upper end of the crankshaft 5.

As shown in fig. 1, a connecting block 23 is integrally fixed to the left side of the upper end of the trigger lever 6, and the lower end of the crank shaft 5 and the connecting block 23 are fixedly connected together by at least one screw 24. Thus, the connection of the crank shaft 5 and the trigger lever 6 is facilitated to be more secure.

As shown in fig. 1 and 3, a connecting plate 25 is fixedly connected to the inner side of the upper portion of the outer cylinder 2, a left mounting hole and a right mounting hole are respectively formed in the left portion and the right portion of the connecting plate 25, the upper end of the ball storage cylinder 9 is fixedly mounted in the left mounting hole of the connecting plate 25, and the upper end of the guide sleeve 11 is fixedly mounted in the right mounting hole of the connecting plate 25. Thus, the ball storage barrel 9 and the guide sleeve 11 are better arranged at the left part and the right part of the inner cavity of the outer barrel 2 side by side through the connecting plate 25, because the distance between the ball storage barrel 9 and the guide sleeve 11 is small, balls stored in the ball storage barrel 9 easily enter the ball waiting chamber 13 in the trigger rod 6 through the ball holes 12 on the ball storage barrel 9 and the guide sleeve 11, the volume of the ball waiting chamber 13 is slightly larger than the volume of one ball, and only one ball can be accommodated in the ball waiting chamber 13 at one time; meanwhile, in order to make the drawings more clearly recognizable, the lower ejector rod 22 of the rod-type pump cylinder, the crank shaft 5, the trigger rod 6 and the trigger rod joint 7 are not sectioned; the rod pump barrel lower ejector 22, the crank shaft 5, the trigger lever 6 and the trigger lever joint 7 can all be solid bodies.

As shown in fig. 1, an installation blind hole 26 is formed in the upper end surface of the trigger rod joint 7, a connection column 27 is integrally fixed to the lower end of the trigger rod 6, threads are respectively formed on the outer side of the connection column 27 and the inner side of the installation blind hole 26, and the connection column 27 is fixedly installed in the installation blind hole 26 of the trigger rod joint 7 through the threads; or/and the bottom end surface of the left part of the ball waiting chamber 13 is lower than the upper end surface of the right part of the bottom plug 10. Therefore, the balls in the ball storage barrel 9 can easily enter the ball waiting chamber 13; the trigger rod 6 and the trigger rod joint 7 are firmly connected, and the installation and the disassembly of the trigger rod 6 and the trigger rod joint 7 are facilitated.

As shown in the attached figure 1, a distance is reserved between the annular spring seat 15 and the left inner wall of the outer cylinder 2, and the distance between the annular spring seat 15 and the left inner wall of the outer cylinder 2 is larger than or equal to the outer diameter of the ball storage cylinder 9; a positioning block mounting hole is formed in the left portion of the annular spring seat 15, threads are formed in the outer side of the left portion of the positioning block 19 and the inner side of the positioning block mounting hole, the left portion of the positioning block 19 is fixedly mounted in the positioning block mounting hole of the annular spring seat 15 through the threads, the lower end of the trigger rod joint 7 is located in the annular spring seat 15, and a guide groove 18 is formed in the left side of the trigger rod joint 7 between the annular spring seat 15 and the boss 14 in the axial direction. Thus, when the trigger lever 6 and the trigger lever joint 7 move downwards, the right part of the positioning block 19 is always positioned in the guide groove 18 of the trigger lever joint 7, and the trigger lever 6 is prevented from rotating; meanwhile, after the initial state or the pitching and the spring 17 is reset, the ball hole 12 on the guide sleeve 11 is always communicated with the ball waiting chamber 13.

As shown in the attached fig. 1 and 2, the upper part of the upper joint 1 is provided with an external thread or/and an internal thread, and the lower part of the lower joint 3 is provided with an external thread or/and an internal thread; the upper joint 1 and the outer cylinder 2 are fixedly installed together through threads, the outer cylinder 2 and the lower joint 3 are fixedly installed together through threads, and the connecting rib 8 and the upper joint 1 are fixedly installed together through threads; at least one sealing ring 28 is arranged between the upper joint 1 and the outer cylinder 2, and at least one sealing ring 28 is arranged between the outer cylinder 2 and the lower joint 3. Thus, the installation and the disassembly are convenient through threaded connection, and the sealing ring 28 is additionally arranged to achieve a better sealing effect.

The utility model has the advantages that:

1. the utility model discloses a push rod 22 pushes down under the rod-type pump cylinder and triggers the bowling, once throws a ball that corresponds the size once pushing down.

2. The utility model discloses a cooperation of crank axle 5, trip bar 6 and storage ball section of thick bamboo 9 has realized that the ball in the storage ball section of thick bamboo 9 is triggered one at every turn.

3. The utility model discloses well ball that uses is the variation in size, from little to big from the bottom up in proper order range, and the range of ball is 1.5 mm.

4. The utility model discloses the interior room 13 of treating the ball of well trigger bar 6 is a curved surface nest column structure, can guarantee to treat at every turn that ball room 13 can only hold a ball.

5. The utility model discloses a cooperation of locating piece 19 on the annular spring seat 15 and the guide way 18 on the trigger bar joint 7, when realizing initial condition or the trigger bar 6 back that resets again down, store up ball hole 12 on the ball section of thick bamboo 9, the ball hole 12 on the uide bushing 11 and treat that ball room 13 is linked together all the time, make and treat that there is a ball all the time in the ball room 13.

6. The utility model discloses a setting of orifice plate 16 structure has satisfied and can be detained temporarily in orifice plate 16 top after the ball triggers to can not influence the requirement that the liquid was crossed in the suction, the left part of orifice plate 16 is little slope design, and after the trigger bar 6 resets, the ball alright fall smoothly.

7. The utility model provides a store up and have the interval between ball section of thick bamboo 9 and the uide bushing 11, formed the passageway that overflows of certain area, no matter beat liquid or suction and cross liquid and all can satisfy the requirement.

8. The utility model discloses can realize changing layers many times, at every turn throw the ball and trade the layer after, spring 17 resets to the trigger bar joint 7, has made the preparation of throwing the ball once more.

9. The utility model discloses the success rate can reach 100%, simultaneously the utility model discloses current technology has improved work efficiency greatly, greatly reduced operating personnel's intensity of labour and measure expense, measure expense can reduce 20% to 30% than current technology.

The working process of the utility model is as follows: when the ball storage cylinder 9 is filled with balls (generally five low-density balls 29), the upper joint 1 is connected with an upper oil pipe, the lower joint 3 is connected with a lower oil pipe, after a sucker rod and a rod type working pump are put in, a rod type pump cylinder lower ejector rod 22 is connected with the rod type working pump, the first ball at the lowest part in the ball storage cylinder 9 enters the ball waiting chamber 13 in the trigger rod 6, the rod type pump cylinder lower ejector rod 22 can press the crank shaft 5 downwards after the rod type pump cylinder is seated in the clamping seat, so as to drive the trigger rod 6 and the trigger rod joint 7 to descend together, after the ball waiting chamber 13 in the trigger rod 6 descends to the lower part of the guide sleeve 11, the ball in the ball waiting chamber 13 falls onto the upper end surface of the left part of the pore plate 16, the ball falling hole 21 at the right part of the pore plate 16 is occupied by the lower part of the trigger rod joint 7, so that the ball temporarily stays at this time, and the liquid at the lowest layer can be sucked, analyzing the water content, and considering the change of a pumping target layer after a certain data collection amount is reached; at the moment, the pump can be lifted for a certain distance, at the moment, the lower ejector rod 22 of the rod pump cylinder loses the downward pressure on the crankshaft 5, the trigger rod joint 7 moves upwards to reset under the action of the spring 17 to leave the ball falling hole 21 at the right part of the pore plate 16, at the moment, the trigger rod 6 is also reset (the second ball in the ball storage cylinder 9 enters the ball waiting chamber 13 in the trigger rod 6), the ball on the pore plate 16 falls into the lower oil pipe through the ball falling hole 21, and at the moment, the rod pump working cylinder also has an overflowing channel because the rod pump working cylinder leaves the pump seat; at the moment, the ball falling into the oil pipe can be pressed and sent from the oil pipe at the well mouth, the ball falls into the upper part of the sliding sleeve at the corresponding position and is locked and sealed, the pressure is increased to a certain value at the moment, if the pressure drops suddenly, the channel at the corresponding position is opened, the pumped channel is blocked at the same time, the rod-type pump working barrel is lowered and is seated into the pump seat, the pumping operation can be started, the operation is repeated after the pumping, the second ball falls into the upper end surface of the left part of the orifice plate 16 again, and the next layer lifting and layer changing of the pump are waited; so relapse can accomplish multilayer trade layer suction work under the condition of not repeatedly proposing the sucker rod, according to the water content of suction fluid, through data analysis and calculation, can lock out the water horizon, for the shutoff goes out the water horizon and makes ready work.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims (10)

1. An automatic ball injection device in an oil field underground is characterized by comprising an upper joint, an outer cylinder, a lower joint, a positioning sleeve, a crank shaft, a trigger rod and a trigger rod joint; the outer side of the lower part of the upper joint and the inner side of the upper end of the outer cylinder are fixedly installed together, the inner side of the lower end of the outer cylinder and the outer side of the upper part of the lower joint are fixedly installed together, at least three connecting ribs are integrally fixed on the outer side of the positioning sleeve along the circumference at intervals, the positioning sleeve is positioned on the lower part of the inner cavity of the upper joint, the outer ends of the connecting ribs and the inner wall of the upper joint are fixedly installed together, a ball storage cylinder is fixedly installed on the left part of the inner cavity of the outer cylinder, a bottom plug is fixedly installed on the inner side of the lower end of the ball storage cylinder, a guide sleeve is fixedly installed on the right part of the inner cavity of the outer cylinder, corresponding ball holes are respectively formed in the right side of the lower part of the ball storage cylinder and the left side of the lower part of the guide sleeve, the lower end of a crank shaft penetrates through the positioning sleeve and, ball hole on the uide bushing with treat that the ball room is linked together, upper end outside an organic whole that connects at the trigger bar is fixed with the boss, interval fixed mounting has annular spring holder and orifice plate down in proper order from last in the lower part inboard of urceolus, the spring is installed in the outside of the trigger bar joint between boss and annular spring holder, the boss seat is on the spring, left side at the trigger bar joint is equipped with the guide way along the axial, fixed mounting has the locating piece on the annular spring holder, the right part of locating piece is located the guide way, the liquid flow hole that is equipped with at least one in the left part of orifice plate, be equipped with the ball hole that falls in the right part of orifice plate, the up end of end stopper, the left part up end of orifice plate and the bottom face of treating the ball room are.

2. The automatic ball-throwing device in oil field well according to claim 1, characterized in that it further comprises a rod pump cylinder lower top rod, the lower end of the rod pump cylinder lower top rod is connected with the upper end of the crankshaft.

3. The automatic ball throwing device in the oil field well according to the claim 1 or 2, characterized in that the upper end left side of the trigger bar is integrally fixed with a connecting block, and the lower end of the crank shaft and the connecting block are fixedly connected together through at least one screw.

4. The automatic ball throwing device in the oil field well according to the claim 1 or 2, characterized in that the inner side of the upper part of the outer cylinder is fixedly connected with a connecting plate, the left part and the right part of the connecting plate are respectively provided with a left mounting hole and a right mounting hole, the upper end of the ball storage cylinder is fixedly mounted in the left mounting hole of the connecting plate, and the upper end of the guide sleeve is fixedly mounted in the right mounting hole of the connecting plate.

5. The automatic ball throwing device in oil field well according to claim 3, characterized in that the inner side of the upper part of the outer cylinder is fixedly connected with a connecting plate, the left part and the right part of the connecting plate are respectively provided with a left mounting hole and a right mounting hole, the upper end of the ball storage cylinder is fixedly mounted in the left mounting hole of the connecting plate, and the upper end of the guide sleeve is fixedly mounted in the right mounting hole of the connecting plate.

6. The automatic ball throwing device in the oil field well according to the claim 1 or 2, characterized in that the upper end face of the trigger rod joint is provided with a blind mounting hole, the lower end of the trigger rod is integrally fixed with a connecting column, the outer side of the connecting column and the inner side of the blind mounting hole are respectively provided with threads, and the connecting column is fixedly mounted in the blind mounting hole of the trigger rod joint through the threads; or/and the bottom end surface of the left part of the ball waiting chamber is lower than the upper end surface of the right part of the bottom plug.

7. The automatic ball throwing device in the oil field well according to claim 5, characterized in that the upper end face of the trigger rod joint is provided with a blind mounting hole, the lower end of the trigger rod is integrally fixed with a connecting column, the outer side of the connecting column and the inner side of the blind mounting hole are respectively provided with threads, and the connecting column is fixedly mounted in the blind mounting hole of the trigger rod joint through the threads; or/and the bottom end surface of the left part of the ball waiting chamber is lower than the upper end surface of the right part of the bottom plug.

8. The automatic ball throwing device in the oil field well according to the claim 1 or 2, characterized in that there is a space between the ring spring seat and the left inner wall of the outer cylinder, the distance between the ring spring seat and the left inner wall of the outer cylinder is larger than or equal to the outer diameter of the ball storage cylinder; the left part of the annular spring seat is provided with a positioning block mounting hole, threads are arranged on the outer side of the left part of the positioning block and the inner side of the positioning block mounting hole, the left part of the positioning block is fixedly mounted in the positioning block mounting hole of the annular spring seat through the threads, the lower end of the trigger rod joint is located in the annular spring seat, and the left side of the trigger rod joint between the annular spring seat and the boss is provided with a guide groove along the axial direction.

9. The automatic ball throwing device in the oil field well according to claim 7, wherein a distance is reserved between the annular spring seat and the left inner wall of the outer cylinder, and the distance between the annular spring seat and the left inner wall of the outer cylinder is larger than or equal to the outer diameter of the ball storage cylinder; the left part of the annular spring seat is provided with a positioning block mounting hole, threads are arranged on the outer side of the left part of the positioning block and the inner side of the positioning block mounting hole, the left part of the positioning block is fixedly mounted in the positioning block mounting hole of the annular spring seat through the threads, the lower end of the trigger rod joint is located in the annular spring seat, and the left side of the trigger rod joint between the annular spring seat and the boss is provided with a guide groove along the axial direction.

10. The automatic ball throwing device in the oil field well according to the claim 9, characterized in that the upper part of the upper joint is provided with external thread or/and internal thread, and the lower part of the lower joint is provided with external thread or/and internal thread; the upper joint and the outer cylinder are fixedly installed together through threads, the outer cylinder and the lower joint are fixedly installed together through threads, and the connecting ribs and the upper joint are fixedly installed together through threads; at least one sealing ring is arranged between the upper joint and the outer cylinder, and at least one sealing ring is arranged between the outer cylinder and the lower joint.

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