WO2023272934A1 - Extrémité hydraulique de pompe à émulsion et pompe à émulsion - Google Patents

Extrémité hydraulique de pompe à émulsion et pompe à émulsion Download PDF

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Publication number
WO2023272934A1
WO2023272934A1 PCT/CN2021/116731 CN2021116731W WO2023272934A1 WO 2023272934 A1 WO2023272934 A1 WO 2023272934A1 CN 2021116731 W CN2021116731 W CN 2021116731W WO 2023272934 A1 WO2023272934 A1 WO 2023272934A1
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WIPO (PCT)
Prior art keywords
hole
peripheral surface
outer peripheral
annular
plunger
Prior art date
Application number
PCT/CN2021/116731
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English (en)
Chinese (zh)
Inventor
李然
王初亮
刘昊
韦文术
叶健
吴梦雨
陈荣明
刘波
Original Assignee
北京天玛智控科技股份有限公司
北京煤科天玛自动化科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202110751428.XA external-priority patent/CN113404684A/zh
Priority claimed from CN202121506694.8U external-priority patent/CN215805120U/zh
Application filed by 北京天玛智控科技股份有限公司, 北京煤科天玛自动化科技有限公司 filed Critical 北京天玛智控科技股份有限公司
Publication of WO2023272934A1 publication Critical patent/WO2023272934A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves

Definitions

  • Embodiments of the present disclosure relate to the field of mine liquid injection power equipment, and in particular to an emulsion pump fluid end and an emulsion pump.
  • valve body of the emulsion pump is mostly of integral and compact design. Due to structural limitations, before replacing the suction valve core and suction valve seat, the liquid supply pipeline, suction box, and positioning flange of the suction valve seat must be removed. The maintenance is complicated, operability is poor, maintenance time is long, and the cost is high.
  • the discharge valve seat is installed on the valve body with interference.
  • the discharge valve seat When assembling the discharge valve seat, it needs to be cold-fitted or press-fitted. When disassembling, special tools must be used to pull it out, which is easy to cause strain on the valve body.
  • the present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.
  • embodiments of the present disclosure propose a fluid end of an emulsion pump, which is easy to disassemble and assemble, easy to maintain, reduces maintenance time and cost, and can also reduce damage to a valve body.
  • Embodiments of the present disclosure provide an emulsion pump.
  • the fluid end of the emulsion pump is easy to assemble and disassemble, the maintenance is simple, the maintenance time and cost are reduced, and the damage to the valve body can also be reduced.
  • the fluid end of an emulsion pump includes: a valve body, the valve body has a plurality of valve cavities, and the valve cavities include a first installation hole and a column connected in sequence along the height direction of the valve body. Plug cavity, second installation hole and third installation hole, the apertures of the first installation hole, second installation hole and third installation hole increase in turn; the suction valve seat, the liquid suction valve seat is arranged on the In the first installation hole, one end of the suction valve seat is matched with the end of the first installation hole away from the plunger cavity; a spacer, the spacer is arranged in the plunger cavity, and One end of the spacer is against the other end of the suction valve seat, and the peripheral wall of the spacer has a liquid hole, and the liquid hole communicates with the inner cavity of the spacer and the plunger cavity; Valve seat, the drain valve seat is set in the second installation hole, the other end of the spacer is against one end of the drain valve seat; valve stopper, the valve stopper is
  • the diameter of the first mounting hole is smaller than that of the second mounting hole, and the diameter of the second mounting hole is smaller than that of the third mounting hole, so that the suction valve seat, the liquid discharge
  • the valve seat and valve stop are installed in sequence and disassembled in reverse order, without removing the packing assembly, plunger assembly and other structural parts.
  • the liquid suction valve seat does not come into contact with the second mounting hole and the third mounting hole when being disassembled, and the liquid discharge valve seat does not come into contact with the third mounting hole when being disassembled, which can reduce damage to the valve body.
  • the liquid suction valve core moves, and the liquid discharge valve core can play a position-limiting role to avoid excessive suction pressure and irreversible damage to the first return spring.
  • the fluid end of the emulsion pump in the embodiment of the present disclosure is easy to assemble and disassemble, and the maintenance is simple, which reduces maintenance time and cost, and can also reduce damage to the valve body.
  • annular protrusion is provided at an end of the first mounting hole away from the plunger cavity, and the one end of the suction valve seat abuts against the annular protrusion.
  • the valve body further has a first plunger hole and a second plunger hole, the first plunger hole is provided on one side in the width direction of the valve body, and the second plunger hole
  • the plug hole is arranged on the other side in the width direction of the valve body, one end of the first plunger hole is a first connection hole, and the other end of the first plunger hole communicates with the plunger chamber, One end of the second plunger hole is a second connection hole, and the other end of the second plunger hole communicates with the plunger cavity;
  • the fluid end of the emulsion pump further includes: a first compression nut, The first compression nut cooperates with the second connection hole to block the second plunger hole, and the packing assembly, one end of the packing assembly cooperates with the first connection hole to cover
  • the first plunger hole, the packing assembly has a through hole, and the plunger assembly, a part of the plunger assembly is located in the through hole, the outer peripheral surface of the plunger assembly is in contact with the through hole
  • the walls are clearance fit
  • the peripheral wall of the spacer also has a positioning hole, and the positioning hole is arranged opposite to the liquid hole along the width direction of the valve body,
  • the fluid end of the emulsion pump also includes a first positioning column, the first positioning column is arranged in the second plunger hole, and at least part of the first positioning column is located in the first compression nut and between the spacers,
  • a part of the outer peripheral surface of the first positioning post is in contact with the wall at the other end of the second plunger hole, and a first annular groove is provided on the part of the outer peripheral surface of the first positioning post.
  • a first annular seal is arranged in the first annular groove,
  • One end of the first positioning column adjacent to the spacer has a positioning protrusion, and the positioning protrusion protrudes into the positioning hole for circumferential positioning of the spacer.
  • the valve cavity further includes a liquid suction port, the liquid suction port communicates with the first installation hole, and the liquid suction port runs through one side of the valve body in the height direction, the liquid suction port
  • the third mounting hole runs through the other side of the valve body in the height direction, and a drain hole is arranged on the wall of the third mounting hole,
  • the fluid end of the emulsion pump also includes:
  • the water suction box assembly is arranged on the said side of the valve body, the water suction box assembly is provided with a liquid suction cavity, and the liquid suction cavity communicates with the liquid suction port;
  • the plurality of pressing plates correspond to the plurality of valve cavities one by one, and the pressing plates are arranged on the other side of the valve body so as to cover the third installation hole , one side of the pressure plate adjacent to the third installation hole is in contact with the other end of the valve stopper.
  • the first plunger hole is a stepped hole
  • the end surface of the one end of the packing assembly is in contact with the stepped surface of the stepped hole
  • the end surface of the one end of the packing assembly is set
  • the outer peripheral surface of the liquid suction valve seat is in clearance fit with the wall surface of the first installation hole, the outer peripheral surface of the liquid suction valve seat is provided with a third annular groove, and the third annular groove There is a third annular seal in the groove,
  • the outer peripheral surface of the drain valve seat is in clearance fit with the wall surface of the second mounting hole, the outer peripheral surface of the drain valve seat is provided with a fourth annular groove, and the fourth annular groove is provided with a fourth Ring seal.
  • the valve stop includes:
  • a base the base is located at the other end of the valve stop, the outer peripheral surface of the base is in clearance fit with the wall surface of the third installation hole, and the outer peripheral surface of the base is provided with a fifth ring a groove, a fifth annular seal is arranged in the fifth annular groove;
  • a stop frame the stop frame is set on the one end of the valve stop device, the stop frame is provided with a movable groove, the other end of the liquid discharge valve core is located in the movable groove, and the movable
  • the bottom wall of the groove is provided with a sixth annular groove, and one end of the second return spring is arranged in the sixth annular groove;
  • a connecting rod, the connecting rod is connected between the base and the stop frame.
  • the packing assembly includes:
  • a connecting seat the outer peripheral surface of one end of the connecting seat is provided with a first thread, the outer peripheral surface of the other end of the connecting seat is provided with a second thread, the one end of the connecting seat is threaded with the first connecting hole Matching, the inner peripheral surface of the connecting seat surrounds the through hole, the inner peripheral surface of the connecting seat is provided with an annular groove, and the second annular groove is arranged on the end surface of the one end of the connecting seat;
  • a second compression nut the second compression nut is threadedly matched with the other end of the connecting seat, the second compression nut is provided with a central hole, the central hole communicates with the annular groove, and the diameter of the central hole is smaller than the diameter of the annular groove;
  • a guide ring the guide ring includes a first part and a second part, the outer diameter of the first part is smaller than the outer diameter of the second part, the outer peripheral surface of the first part is in contact with the wall surface of the central hole, the The outer peripheral surface of the second part is in contact with the peripheral wall surface of the annular groove;
  • An anti-extrusion ring the outer peripheral surface of the anti-extrusion ring is in contact with the peripheral wall surface of the annular groove, and one side of the anti-extrusion ring is in contact with the guide ring;
  • the outer peripheral surface of the packing is in contact with the peripheral wall of the annular groove, and one side of the packing is in contact with the other side of the anti-extrusion ring;
  • the outer peripheral surface of the first gasket is in contact with the peripheral wall surface of the annular groove, and one side of the first gasket is in contact with the other side of the packing;
  • the second gasket the outer peripheral surface of the second gasket is in contact with the peripheral wall surface of the annular groove, one side of the second gasket is in contact with the other side of the first gasket, and the other side of the second gasket is in contact with the second gasket.
  • One side is in contact with the side wall of the annular groove, and an annular cavity is provided inside the second gasket;
  • a packing spring the packing spring is arranged in the annular cavity.
  • the liquid end, the liquid end is the liquid end of the emulsion pump as described in any one of the above embodiments;
  • a power end the power end includes a power shaft and a guide cylinder, the outer peripheral surface of the power shaft is in clearance fit with the inner peripheral surface of the guide cylinder, so that the power shaft reciprocates along the axial direction of the guide cylinder;
  • a crosshead one end of the crosshead is connected with the plunger assembly, and the other end of the crosshead is connected with the power shaft.
  • the emulsion pump also includes a sealed box assembly, and the sealed box assembly includes:
  • the sealing frame includes a flange plate, a first annular boss and a second annular boss, the first annular boss is connected between the flange plate and the second annular boss,
  • the radial dimension of the outer peripheral surface of the first annular boss is smaller than the radial dimension of the outer peripheral surface of the flange plate, and the radial dimension of the outer peripheral surface of the second annular boss is smaller than that of the first annular boss.
  • the radial dimension of the outer peripheral surface of the boss, the radial dimension of the inner peripheral surface of the first annular boss is smaller than the radial dimension of the inner peripheral surface of the flange plate, the inner periphery of the second annular boss
  • the radial dimension of the surface is smaller than the radial dimension of the inner peripheral surface of the first annular boss
  • the flange plate is connected to the end surface of one end of the guide cylinder, the outer peripheral surface of the first annular boss is in contact with the first part of the outer peripheral surface of the guide cylinder, and the outer peripheral surface of the second annular boss is in contact with the outer peripheral surface of the first annular boss.
  • the inner peripheral surface of the second part of the guide cylinder is in contact, the outer peripheral surface of the second annular boss is provided with a seventh annular groove, the seventh annular groove is provided with a sixth annular seal, and the first annular A sealing gasket is provided on the end surface of the boss adjacent to the second annular boss;
  • An oil seal and a pressure ring the outer peripheral surface of the oil seal is in contact with the inner peripheral surface of the first annular boss, one side of the oil seal is in contact with the end of the second annular boss adjacent to the first annular boss
  • the outer peripheral surface of the pressure ring is connected to the inner peripheral surface of the flange plate, and one side of the pressure ring is in contact with the other side of the oil seal.
  • Fig. 1 is a schematic perspective view of an emulsion pump according to an exemplary embodiment of the present disclosure.
  • Fig. 2 is a schematic perspective view of another emulsion pump according to an exemplary embodiment of the present disclosure.
  • Fig. 3 is an exploded view of an emulsion pump according to an exemplary embodiment of the present disclosure.
  • Fig. 4 is a cross-sectional view of another emulsion pump according to an exemplary embodiment of the present disclosure.
  • Fig. 5 is a schematic perspective view of the fluid end of an emulsion pump according to an exemplary embodiment of the present disclosure.
  • Fig. 6 is a schematic perspective view of another liquid end of an emulsion pump according to an exemplary embodiment of the present disclosure.
  • Fig. 7 is a cross-sectional view of a fluid end of an emulsion pump shown in an exemplary embodiment of the present disclosure.
  • Fig. 8 is a cross-sectional view of a valve body shown in an exemplary embodiment of the present disclosure.
  • Fig. 9 is a schematic structural view of another valve body shown in an exemplary embodiment of the present disclosure.
  • Fig. 10 is a schematic structural diagram of a packing assembly according to an exemplary embodiment of the present disclosure.
  • Fig. 11 is a schematic structural view of a liquid suction valve seat shown in an exemplary embodiment of the present disclosure.
  • Fig. 12 is a schematic structural view of a liquid suction valve core shown in an exemplary embodiment of the present disclosure.
  • Fig. 13 is a schematic structural view of a spacer according to an exemplary embodiment of the present disclosure.
  • Fig. 14 is a schematic structural view of a drain valve seat according to an exemplary embodiment of the present disclosure.
  • Fig. 15 is a schematic structural view of a liquid discharge valve core according to an exemplary embodiment of the present disclosure.
  • Fig. 16 is a schematic structural view of a valve stopper according to an exemplary embodiment of the present disclosure.
  • Fig. 17 is a schematic structural diagram of a sealed box assembly shown in an exemplary embodiment of the present disclosure.
  • Emulsion pump 100 Emulsion pump 100
  • Emulsion pump fluid end 120
  • Valve body 10 first installation hole 101; liquid suction port 1011; plunger chamber 102; second installation hole 103; third installation hole 104; liquid discharge hole 1041; first plunger hole 105; The second plunger hole 106; the second connection hole 1061;
  • Suction box assembly 20 pressure plate 30; first compression nut 40; first positioning column 41; first annular groove 411;
  • Packing assembly 50 second compression nut 501; connecting seat 502; second annular groove 5021; guide ring 503; anti-extrusion ring 504; packing 505; first washer 506; second washer 507; packing spring 508; plunger assembly 51;
  • Suction valve seat 60 third annular groove 601; third annular boss 602; guide sleeve 603;
  • Suction valve core 61 sliding rod 611; first stop plate 612; support column 613; second positioning column 614; first return spring 62;
  • Spacer 70 liquid hole 701; positioning hole 702;
  • Valve stopper 90 base 901; fifth annular groove 9011; stop frame 902; movable groove 9021; sixth annular groove 9022; connecting rod 903;
  • Seal box assembly 140 seal frame 141; flange plate 1411; first annular boss 1412; second annular boss 1413; seventh annular groove 1414; oil seal 142; pressure ring 143.
  • the fluid end 120 of the emulsion pump includes a valve body 10 , a suction valve seat 60 , a spacer 70 , a discharge valve seat 80 , a valve stop 90 , a suction Liquid valve core 61, liquid discharge valve core 81, packing assembly 50 and plunger assembly 51.
  • the valve body 10 has a plurality of valve cavities, and the valve cavity includes a first installation hole 101, a plunger cavity 102, a second installation hole 103 and a third installation hole 101, which are sequentially communicated along the height direction of the valve body 10 (as shown in the up and down direction in Figure 4). Mounting holes 104 .
  • the valve body 10 also has a first plunger hole 105 , and the first plunger hole 105 is disposed on one side (the left side in FIG. 6 ) in the width direction of the valve body 10 (the left-right direction in FIG. 6 ).
  • the end of the first mounting hole 101 away from the plunger chamber 102 is provided with an annular protrusion, the aperture of the first mounting hole 101 is smaller than the aperture of the second mounting hole 103, and the aperture of the second mounting hole 103 is smaller than the aperture of the first mounting hole 103.
  • the liquid suction valve seat 60 is arranged in the first installation hole 101, and one end of the liquid suction valve seat 60 (the lower end of the liquid suction valve seat 60 in Figure 6) is against the annular protrusion, thereby being in contact with the first An end of the mounting hole 101 away from the plunger cavity 102 is fitted.
  • the spacer 70 is arranged in the plunger chamber 102, and one end of the spacer 70 (the lower end of the spacer 70 as shown in Figure 6 ) is offset against the other end of the suction valve seat 60 (such as the upper end of the suction valve seat 60 in Figure 6 ).
  • the peripheral wall of the spacer 70 has a liquid hole 701 , and the liquid hole 701 communicates with the inner cavity of the spacer 70 and the first plunger hole 105 . Therefore, the emulsion can enter and leave the first plunger hole 105 from the inner cavity of the spacer 70 , and then the emulsion can be pressed from the inner cavity of the suction valve seat 60 to the inner cavity of the discharge valve seat 80 .
  • the discharge valve seat 80 is located in the second installation hole 103, and the other end of the spacer 70 (the upper end of the spacer 70 as shown in Figure 6 ) is connected to one end of the discharge valve seat 80 (such as the top of the liquid discharge valve seat 80 in Figure 6 ). lower end) offset.
  • Valve stopper 90 is located in the third installation hole 104, and one end of valve stopper 90 (as the lower end of valve stopper 90 in Figure 6) and the other end of drain valve seat 80 (like the bottom of drain valve seat 80 in Figure 6 top) offset.
  • valve stopper 90 can axially position the suction valve seat 60 , the discharge valve seat 80 and the spacer 70 .
  • One end of the suction valve core 61 (as shown in the upper end of the liquid suction valve core 61 in Figure 6) and one end of the liquid discharge valve core 81 (as shown in the lower end of the liquid discharge valve core 81 in Figure 6) cooperate with each other through the first return spring 62,
  • the other end of the liquid discharge valve core 81 (as shown in the upper end of the liquid discharge valve core 81 in Figure 6) cooperates with one end of the valve stopper 90 through the second return spring 82, and the part of the liquid suction valve core 61 can be connected to the liquid suction valve seat.
  • the other end of the drain valve seat 80 can be offset against the other end of the drain valve seat 80 .
  • the suction valve core 61 can move upwards, and when the plunger assembly 51 enters the plunger chamber 102 to the left, the liquid discharge valve core 81 can move upwards.
  • the plunger chamber absorbs liquid the plunger assembly 51 withdraws from the plunger chamber 102 to the right, the liquid suction valve core 61 moves upward, and the liquid discharge valve core can play a position-limiting role to avoid excessive suction pressure. cause irreversible damage.
  • One end of the packing assembly 50 (as shown in the right end of the packing assembly 50 in Figure 6) cooperates with the first connection hole 1051 to cover the first plunger hole 105, the packing assembly 50 has a through hole, and the part of the plunger assembly 51 Located in the through hole, the outer peripheral surface of the plunger assembly 51 is in clearance fit with the wall surface of the through hole, so the plunger assembly 51 can move along the axial direction of the through hole (as shown in the left and right directions in FIG. 6 ).
  • the valve cavity also includes a liquid suction port 1011, which communicates with the first installation hole 101, and the liquid suction port 1011 runs through one side of the valve body 10 in the height direction (as shown in Figure 6 Below the valve body 10), the third mounting hole 104 runs through the other side of the valve body 10 in the height direction (as shown above the valve body 10 in Figure 6), and the wall of the third mounting hole 104 is provided with a drain hole 1041.
  • the fluid end 120 of the emulsion pump in the embodiment of the present disclosure further includes a suction box assembly 20 and a pressure plate 30 .
  • the water suction box assembly 20 is arranged under the valve body 10 , and the water suction box assembly 20 is provided with a liquid suction cavity, which communicates with the liquid suction port 1011 .
  • the suction box assembly 20 can be connected with the valve body 10 through a connecting piece (such as a screw), and the suction box assembly 20 can also be integrally connected with the valve body 10 .
  • a connecting piece such as a screw
  • different connection methods are adopted for different usage requirements and working environments.
  • the emulsion can enter the liquid suction port 1011 from the liquid suction cavity of the suction box assembly 20 , then enter the internal cavity of the liquid suction valve seat 60 into the liquid discharge valve seat 80 , and then be discharged through the liquid discharge hole 1041 .
  • the pressure plate 30 is arranged above the valve body 10 to cover the third installation hole 104.
  • the bottom of the pressure plate 30 is connected to the other end of the valve stopper 90. (the upper end of stop valve device 90 as shown in Figure 6) offset. Therefore, the pressure plate 30 can axially position the valve stopper 90 , thereby axially position the suction valve seat 60 , the liquid discharge valve seat 80 and the spacer 70 .
  • the aperture diameter of the first installation hole 101 is smaller than the aperture diameter of the second installation hole 103
  • the aperture diameter of the second installation hole 103 is smaller than the aperture diameter of the third installation hole 104.
  • the valve seat 60, the drain valve seat 80 and the valve stopper 90 are installed in sequence and disassembled in reverse order, without dismantling the packing assembly 50, the plunger assembly 51 and other structural parts.
  • the liquid suction valve seat 60 will not come into contact with the second mounting hole 103 and the third mounting hole 104 when being disassembled, and the liquid discharge valve seat 80 will not be in contact with the third mounting hole 104 when being disassembled. Body 10 damage.
  • the fluid end 120 of the emulsion pump in the embodiment of the present disclosure is easy to assemble and disassemble, easy to maintain, reduces maintenance time and cost, and can also reduce damage to the valve body 10 .
  • the valve body 10 also has a second plunger hole 106, and the second plunger hole 106 is arranged on the other side of the valve body 10 in the width direction (the right side in FIG. 6 ), and the second post One end of the plug hole 106 (the right end in FIG. 6 ) is the second connection hole 1061 , and the other end of the second plunger hole 106 (the left end in FIG. 6 ) communicates with the plunger cavity 102 .
  • the fluid end 120 of the emulsion pump in the embodiment of the present disclosure also includes a first compression nut 40 and a first positioning column 41, and the first compression nut 40 is threadedly matched with the second connecting hole 1061 to block the second plunger hole 106.
  • the first positioning post 41 is disposed in the second plunger hole 106 , and at least part of the first positioning post 41 is located between the first compression nut 40 and the spacer 70 . Therefore, the first compression nut 40 can compress the first positioning post 41 .
  • Part of the outer peripheral surface of the first positioning post 41 is in contact with the wall surface of the other end of the second plunger hole 106, a part of the outer peripheral surface of the first positioning post 41 is provided with a first annular groove 411, and the first annular groove 411 is provided with There is a first annular seal. Therefore, the first annular seal can seal between part of the outer peripheral surface of the first positioning post 41 and the wall surface at the other end of the second plunger hole 106 to avoid leakage of the emulsion.
  • the peripheral wall of the spacer 70 also has a positioning hole 702 , and the positioning hole 702 is opposite to the liquid hole 701 along the width direction of the valve body 10 . That is, the positioning hole 702 is located on the right side, and the liquid hole 701 is located on the left side.
  • One end of the first positioning column 41 adjacent to the spacer 70 has a positioning protrusion, and the positioning protrusion extends into the positioning hole 702 for circumferential positioning of the spacer 70 . Therefore, the position of the spacer 70 within the plunger cavity 102 is fixed.
  • the first plunger hole 105 is a stepped hole
  • the right end surface of the packing assembly 50 is in contact with the stepped surface of the stepped hole
  • the end surface of one end of the packing assembly 50 is provided with The second annular groove 5021
  • the second annular sealing element is arranged in the second annular groove 5021. Therefore, the second annular seal can seal between the right end surface of the packing assembly 50 and the stepped surface of the stepped hole to avoid leakage of the emulsion.
  • the outer peripheral surface of the liquid suction valve seat 60 is in clearance fit with the wall surface of the first installation hole 101 , and the outer peripheral surface of the liquid suction valve seat 60 is provided with a third annular groove 601 , the third annular groove 601 is provided with a third annular seal. Therefore, the third annular seal can seal between the outer peripheral surface of the liquid suction valve seat 60 and the wall surface of the first installation hole 101 to avoid leakage of the emulsion.
  • the outer peripheral surface of the discharge valve seat 80 is in clearance fit with the wall surface of the second installation hole 103, the outer peripheral surface of the liquid discharge valve seat 80 is provided with a fourth annular groove 801, and the fourth annular groove 801 is provided with a fourth annular seal . Therefore, the fourth annular seal can seal between the outer peripheral surface of the liquid suction valve seat 60 and the wall surface of the second installation hole 103 to avoid leakage of the emulsion.
  • the upper end of the suction valve seat 60 is provided with a third annular boss 602 , and the third annular boss 602 extends into the inner cavity of the spacer 70 so as to abut against the lower end of the spacer 70 .
  • the upper end of the liquid suction valve seat 60 is also provided with a first tapered surface, and the first tapered surface is respectively connected with the inner peripheral surface and the upper end surface of the liquid suction valve seat 60 .
  • the inner cavity of the liquid suction valve seat 60 is also provided with a guide sleeve 603, and the guide sleeve 603 is connected with the inner peripheral surface of the liquid suction valve seat 60 through a plurality of connecting pieces.
  • the liquid suction valve core 61 includes a sliding rod 611 , a first stop disc 612 and a support post 613 , and the first stop disc 612 is connected between the slide rod 611 and the support post 613 .
  • the sliding rod 611 extends into the guide sleeve 603 , and the peripheral surface of the sliding rod 611 is in clearance fit with the inner peripheral surface of the guide sleeve 603 .
  • the cross-section of the edge of the first stop disc 612 is substantially V-shaped, and the lower edge of the first stop disc 612 abuts against the first tapered surface.
  • the upper end of the support column 613 is provided with a second positioning column 614 , and the lower end of the first return spring 62 is sleeved on the second positioning column 614 .
  • the lower end of the drain valve seat 80 is provided with a fourth annular boss 802, and the fourth annular boss 802 extends into the inner cavity of the spacer 70, so that it can be connected with the spacer 70. top offset.
  • the upper end of the liquid suction valve seat 60 is also provided with a second tapered surface, and the second tapered surface is respectively connected with the inner peripheral surface and the upper end surface of the liquid discharge valve seat 80 .
  • the liquid discharge valve core 81 includes a connecting portion 811 and a second stop disc 812 .
  • a third positioning post 813 is provided at the lower end of the connecting portion 811
  • a fourth positioning post 814 is provided at the upper end of the second stop plate 812 .
  • the upper end of the first return spring 62 is sheathed on the third positioning post 813 , and the third positioning post 813 is connected to the upper end of the first return spring 62 .
  • the lower end of the second return spring 82 is sleeved on the fourth positioning post 814 .
  • the cross-section of the edge of the second stop disc 812 is substantially V-shaped, and the lower edge of the second stop disc 812 abuts against the second tapered surface.
  • the valve stopper 90 includes a base 901 , a stop frame 902 and a connecting rod 903 .
  • the connecting rod 903 is connected between the base 901 and the stop frame 902 .
  • the base 901 is located at the upper end of the valve stopper 90, and the outer peripheral surface of the base 901 is matched with the wall surface of the third installation hole.
  • the outer peripheral surface of the base 901 is provided with a fifth annular groove 9011, and the fifth annular groove 9011 is provided with There is a fifth annular seal. Therefore, the fifth sealing member can seal between the outer peripheral surface of the base 901 and the wall surface of the third installation hole to avoid leakage of the emulsion.
  • the stop frame 902 is arranged at the lower end of the valve stopper 90, the stop frame 902 is provided with a movable groove 9021, the upper end of the liquid discharge valve core 81 is located in the movable groove 9021, and the bottom wall of the movable groove 9021 is provided with a sixth annular groove 9022 , the upper end of the second return spring 82 is set in the sixth annular groove 9022 , and the lower end of the stop frame 902 is against the upper end of the discharge valve seat 80 .
  • valve stopper 90 can move up the liquid discharge valve seat 80 and can also provide a movable space for the liquid discharge valve core 81 .
  • the packing assembly 50 includes a connecting seat 502, a second compression nut 501, a guide ring 503, an anti-extrusion ring 143504, a packing 505, a first washer 506, Second washer 507 and packing spring 508 .
  • the guide ring 503, the anti-extrusion ring 143504, the packing 505, the first washer 506 and the second washer 507 are arranged in sequence from left to right.
  • the outer peripheral surface of the right end of the connecting seat 502 is provided with a first thread
  • the outer peripheral surface of the left end of the connecting seat 502 is provided with a second thread
  • the right end of the connecting seat 502 is threadedly engaged with the first connecting hole 1051 .
  • the inner peripheral surface of the connecting seat 502 is surrounded by a through hole
  • the inner peripheral surface of the connecting seat 502 is provided with an annular groove
  • the second annular groove 5021 is arranged on the end surface of one end of the connecting seat 502 .
  • the second compression nut 501 is threadedly engaged with the left end of the connecting seat 502.
  • the second compression nut 501 is provided with a central hole, the central hole communicates with the annular groove, and the diameter of the central hole is smaller than the diameter of the annular groove.
  • the guide ring 503 includes a first part and a second part, the outer diameter of the first part is smaller than the outer diameter of the second part, the outer peripheral surface of the first part is in contact with the wall surface of the central hole, and the outer peripheral surface of the second part is in contact with the peripheral wall surface of the annular groove. touch.
  • the outer peripheral surface of the anti-extrusion ring 143504 is in contact with the peripheral wall of the annular groove, and the left side of the anti-extrusion ring 143504 is in contact with the guide ring 503 .
  • the outer peripheral surface of the packing 505 is in contact with the peripheral wall of the annular groove, and the left side of the packing 505 is in contact with the other side of the anti-extrusion ring 143504.
  • the outer peripheral surface of the first washer 506 is in contact with the peripheral wall of the annular groove, and the left side of the first washer 506 is in contact with the right side of the packing 505 .
  • the outer peripheral surface of the second gasket 507 is in contact with the peripheral wall of the annular groove, the left side of the second gasket 507 is in contact with the right side of the first gasket 506, and the right side of the second gasket 507 is in contact with the side wall of the annular groove.
  • the inside of the second gasket 507 is provided with an annular cavity.
  • the packing spring 508 is disposed in the annular cavity.
  • connection seat 502 only the right end of the connection seat 502 needs to be connected to the valve body 10 or removed from the valve body 10 when the packing assembly 50 is disassembled.
  • packing 505 it is only necessary to separate the second compression nut 501 from the left end of the connection seat 502, and then remove the guide ring 503, the anti-extrusion ring 143504 and the packing 505 in sequence.
  • the fluid end 120 of the emulsion pump in the embodiment of the present disclosure is easy to assemble and disassemble, easy to maintain, and reduces maintenance time and cost.
  • the emulsion pump 100 of the embodiment of the present disclosure will be described below with reference to the drawings.
  • an emulsion pump 100 includes a fluid end, a power end 110 , a crosshead 130 and a seal box assembly 140 .
  • the liquid end is the emulsion pump liquid end 120 as described in any one of the above embodiments.
  • the power end 110 includes a power shaft and a guide cylinder.
  • the outer peripheral surface of the power shaft is in clearance fit with the inner peripheral surface of the guide cylinder so that the power shaft can reciprocate along the axial direction of the guide cylinder.
  • the right end of the crosshead 130 is connected with the plunger assembly 51 , and the left end of the crosshead 130 is connected with the power shaft.
  • the seal box assembly 140 includes a seal frame 141 , an oil seal 142 and a pressure ring 143 .
  • the sealing frame 141 includes a flange plate 1411 , a first annular boss 1412 and a second annular boss 1413 , and the first annular boss 1412 is connected between the flange plate 1411 and the second annular boss 1413 .
  • the flange plate 1411 , the first annular boss 1412 and the second annular boss 1413 are sequentially integrally connected from right to left.
  • the radial dimension of the outer peripheral surface of the first annular boss 1412 is smaller than the radial dimension of the outer peripheral surface of the flange plate 1411, and the radial dimension of the outer peripheral surface of the second annular boss 1413 is smaller than that of the outer peripheral surface of the first annular boss 1412.
  • Radial dimension, the radial dimension of the inner peripheral surface of the first annular boss 1412 is smaller than the radial dimension of the inner peripheral surface of the flange plate 1411, and the radial dimension of the inner peripheral surface of the second annular boss 1413 is smaller than the radial dimension of the first annular boss 1413
  • the radial dimension of the inner peripheral surface of the boss 1412 is smaller than the radial dimension of the outer peripheral surface of the flange plate 1411, and the radial dimension of the outer peripheral surface of the second annular boss 1413 is smaller than that of the outer peripheral surface of the first annular boss 1412.
  • the flange plate 1411 is connected to the right end surface of the guide cylinder, and the outer peripheral surface of the first annular boss 1412 is in contact with the first part of the outer peripheral surface of the guide cylinder.
  • the outer peripheral surface of the second annular boss 1413 is in contact with the inner peripheral surface of the second part of the guide cylinder, the outer peripheral surface of the second annular boss 1413 is provided with a seventh annular groove 1414, and the seventh annular groove 1414 is provided with a sixth annular groove 1414.
  • a sealing gasket is provided on the end surface of the first annular boss 1412 adjacent to the second annular boss 1413 . Therefore, the sixth annular seal and the sealing gasket can seal the contact portion between the seal frame 141 and the guide cylinder.
  • the outer peripheral surface of the oil seal 142 is in contact with the inner peripheral surface of the first annular boss 1412, the left side of the oil seal 142 is in contact with the end surface of the second annular boss 1413 adjacent to the first annular boss 1412, and the outer peripheral surface of the pressure ring 143 is in contact with the inner peripheral surface of the first annular boss 1412.
  • the inner peripheral surface of the flange plate 1411 is connected, and the left side of the pressing ring 143 is in contact with the right side of the oil seal 142 .
  • the flange plate 1411, the first annular boss 1412 and the second annular boss 1413 are integrally connected, which can reduce the fit relationship, facilitate sealing, and reduce the weight of the sealing box assembly 140. thickness.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • a first feature being “on” or “under” a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention concerne une extrémité hydraulique de pompe à émulsion et une pompe à émulsion. Une extrémité hydraulique de pompe à émulsion (120) comprend : un corps de soupape (10), le corps de soupape (10) ayant de multiples chambres de soupape, les chambres de soupape comprenant un premier trou de montage (101), une chambre de piston (102), un deuxième trou de montage (103) et un troisième trou de montage (104) en communication en séquence le long d'une direction de hauteur du corps de soupape (10), des ouvertures du premier trou de montage (101), du deuxième trou de montage (103) et du troisième trou de montage (104) augmentant en séquence. L'extrémité hydraulique de pompe à émulsion est pratique à démonter et à assembler, la maintenance est simple, le temps de maintenance et les coûts sont réduits, et un endommagement du corps de soupape peut être réduit.
PCT/CN2021/116731 2021-07-02 2021-09-06 Extrémité hydraulique de pompe à émulsion et pompe à émulsion WO2023272934A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202110751428.X 2021-07-02
CN202110751428.XA CN113404684A (zh) 2021-07-02 2021-07-02 乳化液泵液力端和乳化液泵
CN202121506694.8U CN215805120U (zh) 2021-07-02 2021-07-02 乳化液泵液力端和乳化液泵
CN202121506694.8 2021-07-02

Publications (1)

Publication Number Publication Date
WO2023272934A1 true WO2023272934A1 (fr) 2023-01-05

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WO (1) WO2023272934A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB503566A (en) * 1937-12-18 1939-04-11 Bryce Ltd Improvements relating to reciprocating pumps for the delivery of mixed liquids
FR2295331A1 (fr) * 1974-12-20 1976-07-16 Weserhuette Ag Eisenwerk Dispositif de commande electrique pour vannes ou soupapes a voies multiples actionnees hydrauliquement
CN111734598A (zh) * 2020-07-23 2020-10-02 北京天地玛珂电液控制系统有限公司 一种乳化液柱塞泵
CN111734599A (zh) * 2020-07-23 2020-10-02 北京天地玛珂电液控制系统有限公司 一种柱塞泵及泵站
CN212656944U (zh) * 2020-07-23 2021-03-05 北京天地玛珂电液控制系统有限公司 一种乳化液柱塞泵

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB503566A (en) * 1937-12-18 1939-04-11 Bryce Ltd Improvements relating to reciprocating pumps for the delivery of mixed liquids
FR2295331A1 (fr) * 1974-12-20 1976-07-16 Weserhuette Ag Eisenwerk Dispositif de commande electrique pour vannes ou soupapes a voies multiples actionnees hydrauliquement
CN111734598A (zh) * 2020-07-23 2020-10-02 北京天地玛珂电液控制系统有限公司 一种乳化液柱塞泵
CN111734599A (zh) * 2020-07-23 2020-10-02 北京天地玛珂电液控制系统有限公司 一种柱塞泵及泵站
CN212656944U (zh) * 2020-07-23 2021-03-05 北京天地玛珂电液控制系统有限公司 一种乳化液柱塞泵

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