Sealing energy-saving slurry pump for well drilling

Abstract

The invention relates to the technical field of slurry pumps, and particularly discloses a sealed energy-saving slurry pump for well drilling, which comprises a pump shell and a main shaft, one side of the pump shell is fixedly connected with an inlet joint, the other side of the pump shell is fixedly connected with a rear shell, a fixed lantern ring is fixedly mounted in the rear shell, and a second chute is formed in the inner ring of the fixed lantern ring; a tensioning mechanism comprising a sliding rod is arranged in the fixing lantern ring, a bearing is fixedly connected to one side of the rear shell, a spindle which is horizontally arranged and penetrates to the inlet connector is rotationally connected to the center of the bearing, impellers which are symmetrical in structure are fixedly connected to the portion, located in the pump shell, of the spindle, and sealing mechanisms comprising sealing shaft sleeves and sealing rings are arranged at the connecting portions of the impellers and the spindle. An outlet connector is arranged at the top of the pump shell, and an adjusting mechanism comprising a movable groove and a sectioning sliding block is arranged at the top of the outlet connector. The working pressure of the inlet and the outlet of the slurry pump can be increased through the inducer and the adjusting mechanism to reduce the cavitation phenomenon, and the power consumption of the motor can also be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mud pumps, and in particular to a sealed energy-saving mud pump for drilling. Background Art

[0002] Drilling refers to the work of using mechanical equipment to drive the drill bit to rotate and drill holes in the bottom layer. It is usually seen in the exploration or development of oil, natural gas and other projects. During drilling, a mud pump is needed to cool the working drill bit and pump out the water in the well.

[0003] As the drilling depth increases, the depth of water accumulated to cool the drill bit also increases, and the workload of the mud pump also increases. When the inlet pressure of the currently commonly used centrifugal mud pump is less than the saturated vapor pressure of the liquid at ambient temperature, water will hit the metal surface of the blade with a greater force, causing the blade to be damaged and vibrate, which is called cavitation. Therefore, as the depth increases, the inlet pressure of the mud pump needs to be increased, otherwise cavitation is likely to occur and affect the normal operation of the mud pump. Since the mud pump conveys well water containing impurities such as mud and sand, the sealing ring of the mud pump is more likely to wear and tear, resulting in poor sealing and affecting the operating pressure of the mud pump. Therefore, it is necessary to propose a mud pump with good sealing effect that can adjust the inlet and working pressure. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a sealed energy-saving mud pump for drilling.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A sealed energy-saving mud pump for drilling, comprising a pump casing and a main shaft, wherein one side of the pump casing is fixedly connected with an inlet joint, the other side of the pump casing is fixedly connected with a rear casing, a fixed collar is fixedly installed in the rear casing, a second slide groove is provided in the inner ring of the fixed collar, a tensioning mechanism including a slide rod is provided in the fixed collar, one side of the rear casing is fixedly connected with a bearing, a main shaft horizontally arranged and penetrating to the inlet joint is rotatably connected to the center of the bearing, a structurally symmetrical impeller is fixedly connected to the main shaft located in the pump casing, a sealing mechanism including a sealing sleeve and a sealing ring is provided at the connection part between the impeller and the main shaft, an outlet joint is provided at the top of the pump casing, and an adjustment mechanism including a movable groove and a petal slider is provided at the top of the outlet joint;

[0007] The main shaft is slidably connected with a sealing sleeve on the side close to the impeller, a sealing ring is sleeved on the main shaft between the sealing sleeve and the side wall of the impeller, four wedge-shaped grooves are evenly opened on the side wall of the outer ring of the sealing sleeve, and a plurality of balls are rotatably connected to the inner ring of the sealing sleeve close to the sealing ring;

[0008] The outer ring of the fixed collar is evenly provided with four arc-shaped sliding grooves, and a sliding rod is slidably connected between the bottom of the four arc-shaped sliding grooves and the inner ring of the fixed collar, and the end of the sliding rod is a wedge-shaped structure, and the wedge-shaped structures at the ends of the four sliding rods are respectively abutted against the four wedge-shaped grooves;

[0009] The inner wall at the top of the outlet joint is provided with a movable groove penetrating to the outer wall of the outlet joint, and four evenly distributed petal sliding blocks are slidably connected in the movable groove.

[0010] Preferably, a pulley is fixedly connected to the end of the main shaft, a motor is arranged on one side of the pump housing, and the output shaft of the motor is connected to the pulley via an output wheel and a belt.

[0011] Preferably, four first sliding grooves are evenly opened at one end of the main shaft located at the inlet joint, a sliding sleeve is slidably connected in the four first sliding grooves through four first sliding blocks, and an inducer wheel is fixedly connected to the outer wall of the sliding sleeve.

[0012] Preferably, an annular groove is provided on the outer wall of the impeller at the side close to the rear shell and connected to the main shaft key, a plurality of balls are rollingly connected to the annular groove, and a plurality of reinforcing blocks are evenly arranged on the two output surfaces of the impeller.

[0013] Preferably, four second sliding blocks are fixedly connected to the outer wall of the sealing sleeve, and each second sliding block is slidably connected to each second sliding groove.

[0014] Preferably, an isolation ring fixed to the inner wall of the rear shell is installed between the impeller and the rear shell, the isolation ring is fixedly connected to the fixed sleeve ring, and each second sliding block is slidably connected to the inner ring of the isolation ring at the same time.

[0015] Preferably, the outer ring of the fixed collar is rotatably connected to an annular rotating block, and the inner ring of the annular rotating block is evenly provided with four arc-shaped fixed blocks slidably connected to four arc-shaped sliding grooves, and the outer wall of each arc-shaped fixed block is respectively abutted against the head end of each sliding rod.

[0016] Preferably, two handles are symmetrically connected to the outer wall of the annular rotating block, and the two handles pass through the rear shell.

[0017] Preferably, the inner ring of the petal slider is fixedly connected to a spiral block, the outer ring of the petal slider is slidably connected to the movable groove through a guide block, the bottom of the movable groove is rotatably connected to a rotating ring, the outer ring of the rotating ring passes through the bottom of the movable groove and extends to the outside of the outlet joint, the inner ring of the rotating ring is fixedly connected to a trapezoidal ring, the outer ring of the trapezoidal ring is provided with a thread, and the spiral blocks of the four petal sliders are threadedly connected to the threads.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention arranges a sliding sleeve and an inducer. Since the inducer is arranged at the inlet joint, the inlet pressure of the well water can be increased by rotating the inducer, so that the inlet pressure of the mud pump is increased and cavitation is reduced, thereby ensuring the normal operation of the mud pump. Since the sliding sleeve can be conveniently disassembled and assembled on the main shaft, as the drilling depth increases, inducers with different spirals can be replaced before pumping water, so that the water inlet pressure provided by the inducer is gradually increased to meet the use requirements of the mud pump.

[0020] The present invention provides a sealing mechanism, and the sealing ring separates the impeller and the sealing sleeve, so that the sealing ring can be used as both a sealing member and a friction member. After the sealing ring is worn, it can be directly replaced, which is more economical than replacing the sealing sleeve. At the same time, by using the sealing ring as a friction member, the adverse effects such as vibration of the sealing sleeve during operation can be effectively reduced, the sealing effect of the sealing sleeve can be ensured, and the pressure relief of the mud pump due to sealing failure can be prevented, which ultimately affects the pumping work. The additional electrical energy consumed by the increase in motor output due to lax sealing can also be reduced, thereby saving energy.

[0021] The present invention provides a tensioning mechanism, which can be used in conjunction with the sealing mechanism. The wedge-shaped structure at the end of the sliding rod abuts the wedge-shaped groove to position the sealing sleeve, so that the sealing sleeve is not easily displaced by vibration during operation, thereby ensuring the sealing effect of the sealing sleeve and the sealing ring. When the sealing ring is worn, the sealing effect is lost, and the vibration generated by the rotation of the impeller increases. At this time, the vibration signal intensity of the vibration sensor increases, and an alarm is given through an external signal light. At this time, the tensioning mechanism is manually operated to push the sealing sleeve to squeeze the sealing ring, so that the sealing ring is tightly attached to the side wall of the impeller to offset the worn part of the sealing ring. The wear of the sealing ring can be compensated to extend the service life of the sealing ring. The sealing effect of the mud pump can also be maintained by compensating for the wear of the sealing ring to prevent pressure relief from affecting the normal operation of the impeller, thereby allowing the sealing ring to continue to be used until the next replacement.

[0022] The present invention provides an adjusting mechanism, which can be adjusted according to the depth of the well water. As the depth increases, the inlet pressure can be increased by replacing the inducer, and the outlet pressure can be increased by reducing the outlet size. The adjusting mechanism adjusts the height positions of the four petal sliders so that the top ends of the petal sliders are close to each other until they are completely fitted together, thereby reducing the outlet size of the outlet joint, thereby increasing the outlet pressure. By replacing the inducer to increase the working pressure of the mud pump, deeper well water extraction can be achieved. The pressure can also be increased in these ways to reduce the power consumption of the motor, thereby saving electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the rear shell structure of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of a pump casing of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0026] Figure 4 A side view of the internal structure of a pump casing of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of an inducer of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the sliding sleeve structure of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the main shaft structure of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0030] Figure 8 A sealed energy-saving mud pump for drilling proposed by the present invention Figure 7 A magnified view of the structure of the area in the middle;

[0031] Fig. 9 A side view of a sealing sleeve of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0032] Fig.10 A schematic diagram of a two-view impeller structure of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0033] Fig.11 This is a schematic diagram of the structure of an isolation ring and a fixed collar of a sealing energy-saving mud pump for drilling proposed by the present invention;

[0034] Fig.12 A cross-sectional view of a tensioning mechanism of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0035] Fig.13 This is a schematic diagram of the structure of an annular rotary block of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0036] Fig.14 This is a schematic diagram of the outlet joint structure of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0037] Fig.15 This is a schematic diagram of the structure of an adjustment mechanism of a sealed energy-saving mud pump for drilling proposed by the present invention;

[0038] Fig.16 This is an exploded view of the adjustment mechanism of a sealed energy-saving mud pump for drilling proposed by the present invention.

[0039] In the figure: 1. pump casing; 2. inlet joint; 3. rear casing; 4. bearing; 5. main shaft; 6. pulley; 7. motor; 8. first slide groove; 9. sliding sleeve; 91. first slider; 10. inducer; 11. impeller; 111. annular groove; 112. output surface; 113. reinforcement block; 12. sealing mechanism; 121. sealing sleeve; 122. second slider; 123. wedge groove; 124. ball; 13. sealing ring; 14. isolation ring; 15. tensioning mechanism; 16. fixing ring; 161. second slide groove; 162. slide rod; 17. annular rotating block; 171. handle; 18. arc-shaped fixed block; 19. outlet joint; 20. adjustment mechanism; 21. rotating ring; 22. trapezoidal ring; 23. thread; 24. petal slider; 25. spiral block. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] Reference Figure 1-16 A sealed energy-saving mud pump for drilling, comprising a pump casing 1 and a main shaft 5, wherein an inlet joint 2 is fixedly connected to one side of the pump casing 1, and a rear casing 3 is fixedly connected to the other side of the pump casing 1, a fixed collar 16 is fixedly installed in the rear casing 3, a second slide groove 161 is provided in the inner ring of the fixed collar 16, a tensioning mechanism 15 including a slide rod 162 is arranged in the fixed collar 16, a bearing 4 is fixedly connected to one side of the rear casing 3, a main shaft 5 which is horizontally arranged and passes through the inlet joint 2 is rotatably connected to the center of the bearing 4, a structurally symmetrical impeller 11 is fixedly connected to the main shaft 5 located in the pump casing 1, a sealing mechanism 12 including a sealing sleeve 121 and a sealing ring 13 is arranged at the connecting portion between the impeller 11 and the main shaft 5, an outlet joint 19 is arranged at the top of the pump casing 1, and an adjusting mechanism 20 including a movable groove and a petal slider 24 is arranged at the top of the outlet joint 19;

[0042] A sealing sleeve 121 is slidably connected to the side of the main shaft 5 close to the impeller 11, a sealing ring 13 is sleeved on the main shaft 5 between the sealing sleeve 121 and the side wall of the impeller 11, four wedge-shaped grooves 123 are evenly opened on the side wall of the outer ring of the sealing sleeve 121, and a plurality of balls 124 are rotatably connected to the inner ring of the sealing sleeve 121 close to the sealing ring 13;

[0043] The outer ring of the fixed collar 16 is evenly provided with four arc-shaped slide grooves, and a slide rod 162 is slidably connected between the bottom of the four arc-shaped slide grooves and the inner ring of the fixed collar 16. The end of the slide rod 162 is a wedge-shaped structure, and the wedge-shaped structures at the ends of the four slide rods 162 are respectively in contact with the four wedge-shaped grooves 123;

[0044] The inner wall at the top of the outlet joint 19 is provided with a movable groove which extends to the outer wall of the outlet joint 19, and four evenly distributed petal sliders 24 are slidably connected in the movable groove. The pump casing 1 is installed on the ground by bolts, and the inlet joint 2 is connected to the water pipe in the well for use. The rear shell 3 and the pump casing 1 are installed to form an integral mud pump casing. The impeller 11 is used as the main rotating part to pump well water. Friction is inevitable between the side wall of the impeller 11 and the sealing sleeve 121. Therefore, a sealing ring 13 is required to separate the impeller 11 and the sealing sleeve 121, so that the sealing ring 13 can be used as both a sealing part and a friction part. After the sealing ring 13 is worn, it can be directly replaced, which is more economical than replacing the sealing sleeve 121. At the same time, by using the sealing ring 13 as a friction part, the adverse effects such as vibration of the sealing sleeve 121 during operation can also be effectively reduced, which can ensure the sealing sleeve 121. The sealing effect can prevent the mud pump from being depressurized due to seal failure and ultimately affecting the pumping work. It can also reduce the extra power consumed by the motor 7 due to the increase in the output of the motor 7 caused by poor sealing, which can save energy. The tensioning mechanism 15 can be used in conjunction with the sealing mechanism 12, and the sealing sleeve 121 can be positioned by abutting the wedge-shaped groove 123 with the wedge-shaped structure at the end of the sliding rod 162, so that the sealing sleeve 121 is not easily displaced by vibration during operation, thereby ensuring the sealing effect of the sealing sleeve 121 and the sealing ring 13. The bottom end of the ball 124 is rollingly connected to the annular groove 111, and the top end of the ball 124 is rollingly connected to the receiving end of the vibration sensor built into the sealing sleeve 121. When the sealing ring 13 is not When the impeller 11 is worn, the vibration generated by the rotation of the impeller 11 is relatively uniform, and the vibration signals of each vibration sensor are close. When the sealing ring 13 is worn, the sealing effect is lost, and the vibration generated by the rotation of the impeller 11 will increase. At this time, the vibration signal intensity of the vibration sensor will increase, and then an alarm will be given through the external signal light. At this time, the manually operated tensioning mechanism 15 pushes the sealing sleeve 121 to squeeze the sealing ring 13, so that the sealing ring 13 is close to the side wall of the impeller 11 and the worn part of the sealing ring 13 is offset. The wear of the sealing ring 13 can be compensated to extend the service life of the sealing ring 13, and the sealing effect of the mud pump can be maintained by compensating for the wear of the sealing ring 13 to prevent pressure release from affecting the normal operation of the impeller 11 Working, the sealing ring 13 can continue to be used until the next replacement. The adjusting mechanism 20 can be adjusted according to the depth of the well water. With the increase of the depth, the inlet pressure can be increased by replacing the inducer 10, and the outlet pressure can be increased by reducing the outlet size. The adjusting mechanism 20 adjusts the height position of the four petal sliders 24 so that the top ends of the petal sliders 24 are close to each other until they are fully fitted to reduce the outlet size of the outlet joint 19, thereby increasing the outlet pressure. In conjunction with replacing the inducer 10 to increase the working pressure of the mud pump, it can meet the needs of deeper well water extraction. The pressure can also be increased in these ways to reduce the power consumption of the motor 7, thereby saving electric energy.

[0045] As a technical optimization solution of the present invention, a pulley 6 is fixedly connected to the end of the main shaft 5, and a motor 7 is arranged on one side of the pump housing 1. The output shaft of the motor 7 is connected to the pulley 6 through an output wheel and a belt. The motor 7 is also installed on the ground by bolts, and the pulley 6 and the main shaft 5 are driven to rotate by the rotation of the motor 7, and then the impeller 11 is driven to rotate to pump the well water.

[0046] As a technical optimization solution of the present invention, four first sliding grooves 8 are evenly opened at one end of the main shaft 5 located at the inlet joint 2, and a sliding sleeve 9 is slidably connected in the four first sliding grooves 8 through four first sliding blocks 91, and an inducer wheel 10 is fixedly connected to the outer wall of the sliding sleeve 9. The sliding sleeve 9 is slidably connected to one end of the main shaft 5, and through the first sliding groove 8 and the first sliding block 91 fixedly connected to the inner wall of the sliding sleeve 9, the sliding sleeve 9 can rotate coaxially with the main shaft 5, that is, when the main shaft 5 rotates, the inducer 10 can be driven to rotate synchronously with the impeller 11. The head end of the sliding sleeve 9 is fastened to the side wall of one end of the main shaft 5 by bolts. Since the inducer 10 is arranged at the inlet joint 2, the inlet pressure of the well water can be increased by rotating the inducer 10, so that the inlet pressure of the mud pump is increased and the cavitation phenomenon is reduced, which can ensure the normal operation of the mud pump. Since the sliding sleeve 9 can be easily disassembled and assembled on the main shaft 5, as the drilling depth increases, the inducer 10 with different spirals can be replaced before pumping, so that the water inlet pressure provided by the inducer 10 is gradually increased to meet the use requirements of the mud pump.

[0047] As a technical optimization solution of the present invention, an annular groove 111 is provided on the outer wall of the portion of the impeller 11 close to the rear shell 3 and keyed to the main shaft 5, and a plurality of balls 124 are rollingly connected to the annular groove 111, and a plurality of reinforcing blocks 113 are evenly arranged on the two output surfaces 112 of the impeller 11. The width of the annular groove 111 is greater than the diameter of the balls 124, and the normal movement of the sealing sleeve 121 will not be affected when the tensioning mechanism 15 pushes the sealing sleeve 121, and the balls 124 can also ensure that the vibration of the impeller 11 can be transmitted. Since the well water extracted by the mud pump contains mud and sand, the output of the output surface 112 can be increased by adding reinforcing blocks 113 to the two output surfaces 112, so that the working pressure of the mud pump is increased, and the strength and wear resistance of the impeller 11 can be enhanced, and the wear of the impeller 11 by mud and sand due to long operation time can be reduced.

[0048] As a technical optimization solution of the present invention, four second sliders 122 are fixedly connected to the outer wall of the sealing sleeve 121, and each second slider 122 is respectively slidably connected to each second slide groove 161. The sealing sleeve 121 seals between the main shaft 5 and the impeller 11.

[0049] As a technical optimization solution of the present invention, an isolating ring 14 fixed to the inner wall of the rear shell 3 is installed between the impeller 11 and the rear shell 3, the isolating ring 14 is fixedly connected to the fixing ring 16, and each second slider 122 is simultaneously slidably connected to the inner ring of the isolating ring 14. The isolating ring 14 is fixed to the rear shell 3, and the isolating ring 14 is connected to the fixing ring 16 so that the isolating ring 14 and the fixing ring 16 are integrally sleeved on the outer ring of the sealing sleeve 121, so that the sealing sleeve 121 combined with the sealing ring 13 can meet the overall sealing requirements of the impeller 11, the rear shell 3 and the fixing ring 16.

[0050] As a technical optimization solution of the present invention, the outer ring of the fixed collar 16 is rotatably connected with an annular rotating block 17, and the inner ring of the annular rotating block 17 is evenly provided with four arc-shaped fixed blocks 18 slidably connected to four arc-shaped sliding grooves, and the outer wall of each arc-shaped fixed block 18 is respectively in contact with the head end of each slide rod 162. When the external signal light alarms, it is necessary to compress the sealing ring 13 through the tensioning mechanism 15 to compensate for wear. At this time, the annular rotating block 17 can be manually rotated counterclockwise to rotate the annular rotating block 17 around the fixed collar 16, so that the arc-shaped fixed block 18 can be rotated to push the slide rod 162 to slide in the direction of the sealing sleeve 121. During the sliding process, the slide rod 162 can push the wedge-shaped groove 123 to make the sealing sleeve 121 slide in the direction of the sealing ring 13, so that the sealing ring 13 can be compressed, thereby maintaining the sealing effect of the sealing ring 13.

[0051] As a technical optimization solution of the present invention, two handles 171 are symmetrically connected to the outer wall of the annular rotating block 17, and the two handles 171 pass through the rear shell 3. The handles 171 can be conveniently operated to rotate the annular rotating block 17.

[0052] As a technical optimization scheme of the present invention, the inner ring of the petal slider 24 is fixedly connected with a spiral block 25, the outer ring of the petal slider 24 is slidably connected to the movable groove through a guide block, a rotating ring 21 is rotatably connected to the bottom of the movable groove, the outer ring of the rotating ring 21 passes through the bottom of the movable groove and extends to the outside of the outlet joint 19, the inner ring of the rotating ring 21 is fixedly connected with a trapezoidal ring 22, the outer ring of the trapezoidal ring 22 is provided with a thread 23, and the spiral blocks 25 of the four petal sliders 24 are all threadedly connected to the thread 23. A sealing gasket is installed between the rotating ring 21 and the outlet joint 19. When the outlet size of the outlet joint 19 needs to be reduced, the rotating ring 21 can be rotated to drive the trapezoidal ring 22 to rotate synchronously. Since the four petal sliders 24 are obliquely connected to the outside of the trapezoidal ring 22, and the outer ring of the petal slider 24 is slidably connected to the movable groove, when the trapezoidal ring 22 rotates, the petal slider 24 can slide obliquely upward along the direction of the guide block through the cooperation of the thread 23 and the spiral block 25. At this time, the top of the petal slider 24 can compress the outlet size of the outlet joint 19 until the side walls of the four petal sliders 24 abut against each other. In this state, the outlet of the outlet joint 19 is replaced by the combined petal slider 24, and the outlet is compressed to a minimum, thereby increasing the outlet pressure.

[0053] When the present invention is in use, the pump housing 1 is installed on the ground by bolts, the inlet joint 2 is connected to the water pipe in the well for use, the motor 7 is started, the motor 7 rotates to drive the pulley 6 and the main shaft 5 to rotate, and then drives the impeller 11 to rotate to pump the well water. At this time, the impeller 11 rotates so that the bottom end of the ball 124 is rollingly connected with the annular groove 111, and the top end of the ball 124 is rollingly connected with the receiving end of the vibration sensor built into the sealing sleeve 121. The vibration generated by the rotation of the impeller 11 is relatively uniform, and the vibration signals of each vibration sensor are close. When the sealing ring 13 is worn, the sealing effect is lost, and the impeller 11 is The vibration generated by the rotation of the wheel 11 will increase, and the vibration signal intensity of the vibration sensor will increase, and then an alarm will be given through the external signal light. At this time, the annular swivel block 17 can be manually rotated counterclockwise through the handle 171 to make the annular swivel block 17 rotate around the fixed ring 16, so that the arc-shaped fixed block 18 can be rotated to push the slide rod 162 to slide in the direction of the sealing sleeve 121. During the sliding process, the slide rod 162 can push the wedge-shaped groove 123 to make the sealing sleeve 121 slide in the direction of the sealing ring 13, so that the sealing ring 13 can be compressed, thereby maintaining the sealing effect of the sealing ring 13.

[0054] As the drilling depth increases, the working pressure required by the mud pump also increases. At this time, the connecting bolts between the original sliding sleeve 9 and the main shaft 5 can be removed in front of the motor 7, and the sliding sleeve 9 can be pulled out of the first sliding groove 8 to replace an inducer 10 with a different spiral. The new inducer 10 generates greater pressure when it rotates, which can increase the inlet pressure at the inlet joint 2. Then, the rotating ring 21 is rotated to drive the trapezoidal ring 22 to rotate synchronously. Since the four petal sliders 24 are obliquely connected to the outside of the trapezoidal ring 22, and the outer ring of the petal slider 24 is slidably connected to the movable groove, when the trapezoidal ring 22 rotates, the petal slider 24 can slide upward along the direction of the guide block through the cooperation of the thread 23 and the spiral block 25. At this time, the top of the petal slider 24 can compress the outlet size of the outlet joint 19 until the side walls of the four petal sliders 24 are abutted. In this state, the outlet of the outlet joint 19 is replaced by the combined petal slider 24, and the outlet is compressed to the minimum, thereby increasing the outlet pressure. After the adjustment is completed, the water pipe is installed again, and the motor 7 is started to perform the pumping operation.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0056] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealed energy-saving mud pump for drilling, comprising a pump casing (1) and a main shaft (5), characterized in that: The pump housing (1) is fixedly connected to an inlet joint (2) on one side, and is fixedly connected to a rear housing (3) on the other side. A fixing ring (16) is fixedly installed in the rear housing (3). A second sliding groove (161) is provided in the inner ring of the fixing ring (16). A tensioning mechanism (15) including a sliding rod (162) is provided in the fixing ring (16). A bearing (4) is fixedly connected to one side of the rear housing (3). A main shaft (5) which is horizontally arranged and passes through the inlet joint (2) is rotatably connected to the center of the bearing (4). The main shaft (5) located in the pump housing (1) is fixedly connected to an impeller (11) with a symmetrical structure. A sealing mechanism (12) including a sealing sleeve (121) and a sealing ring (13) is provided at the connecting portion between the impeller (11) and the main shaft (5). An outlet joint (19) is provided at the top of the pump housing (1). An adjusting mechanism (20) including a movable groove and a petal sliding block (24) is provided at the top of the outlet joint (19). A sealing sleeve (121) is slidably connected to the side of the main shaft (5) close to the impeller (11); a sealing ring (13) is sleeved on the main shaft (5) between the sealing sleeve (121) and the side wall of the impeller (11); four wedge-shaped grooves (123) are evenly arranged on the side wall of the outer ring of the sealing sleeve (121); and a plurality of balls (124) are rotatably connected to the side of the inner ring of the sealing sleeve (121) close to the sealing ring (13); The outer ring of the fixed collar (16) is evenly provided with four arc-shaped sliding grooves, and a sliding rod (162) is slidably connected between the bottom of the four arc-shaped sliding grooves and the inner ring of the fixed collar (16), and the end of the sliding rod (162) is a wedge-shaped structure, and the wedge-shaped structures at the ends of the four sliding rods (162) are respectively in contact with the four wedge-shaped grooves (123); The top inner wall of the outlet joint (19) is provided with a movable groove penetrating to the outer wall of the outlet joint (19), and four evenly distributed petal sliding blocks (24) are slidably connected in the movable groove.

2. A sealed energy-saving mud pump for drilling according to claim 1, characterized in that: The end of the main shaft (5) is fixedly connected to a pulley (6), and a motor (7) is arranged on one side of the pump housing (1). The output shaft of the motor (7) is connected to the pulley (6) via an output wheel and a belt.

3. A sealed energy-saving mud pump for drilling according to claim 1, characterized in that: The main shaft (5) is evenly provided with four first sliding grooves (8) at one end of the inlet joint (2), and a sliding sleeve (9) is slidably connected in the four first sliding grooves (8) via four first sliding blocks (91), and an inducer wheel (10) is fixedly connected to the outer wall of the sliding sleeve (9).

4. A sealed energy-saving mud pump for drilling according to claim 1, characterized in that: An annular groove (111) is provided on the outer wall of the portion of the impeller (11) that is key-connected to the main shaft (5) on one side of the impeller (11) close to the rear shell (3), a plurality of balls (124) are rollingly connected to the annular groove (111), and a plurality of reinforcing blocks (113) are evenly arranged on two output surfaces (112) of the impeller (11).

5. The sealed energy-saving mud pump for drilling according to claim 1, characterized in that: Four second sliding blocks (122) are fixedly connected to the outer wall of the sealing sleeve (121), and each second sliding block (122) is slidably connected to each second sliding groove (161).

6. A sealed energy-saving mud pump for drilling according to claim 5, characterized in that: An isolating ring (14) fixed to the inner wall of the rear shell (3) is installed between the impeller (11) and the rear shell (3); the isolating ring (14) is fixedly connected to the fixing ring (16); and each second sliding block (122) is simultaneously slidably connected to the inner ring of the isolating ring (14).

7. A sealed energy-saving mud pump for drilling according to claim 1, characterized in that: The outer ring of the fixed collar (16) is rotatably connected to an annular rotating block (17), and the inner ring of the annular rotating block (17) is evenly provided with four arc-shaped fixed blocks (18) slidably connected to four arc-shaped sliding grooves, and the outer wall of each arc-shaped fixed block (18) is respectively abutted against the head end of each sliding rod (162).

8. A sealed energy-saving mud pump for drilling according to claim 7, characterized in that: Two handles (171) are symmetrically connected to the outer wall of the annular rotating block (17), and the two handles (171) pass through the rear shell (3).

9. A sealed energy-saving mud pump for drilling according to claim 1, characterized in that: The inner ring of the split slider (24) is fixedly connected to a spiral block (25); the outer ring of the split slider (24) is slidably connected to the movable groove through a guide block; a rotating ring (21) is rotatably connected to the bottom of the movable groove; the outer ring of the rotating ring (21) passes through the bottom of the movable groove and extends to the outside of the outlet joint (19); the inner ring of the rotating ring (21) is fixedly connected to a trapezoidal ring (22); the outer ring of the trapezoidal ring (22) is provided with a thread (23); the spiral blocks (25) of the four split sliders (24) are all threadedly connected to the thread (23).

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