阅读说明：本技术 一种多点支撑整体式液力端结构的五缸泵 (Five-cylinder pump with multi-point support integral hydraulic end structure ) 是由 曾德刚 嵇兵 于 2020-04-28 设计创作，主要内容包括：本发明公开一种多点支撑整体式液力端结构的五缸泵,包括驱动电机、曲轴箱体、十字头箱体、液力端总成,驱动电机、曲轴箱体、十字头箱体、液力端总成均安装于总成架上,驱动电机输出轴端套设有第一连接轮,第一连接轮通过皮带传动连接第二连接轮,曲轴箱体内转动设置有圆柱滚子轴。本发明若干下支撑弹簧等弧度安装于凸台外缘位置,凸台上安装有导向凸起,导向凸起安装于凸台圆心位置,移动座、排出压盖底部均安装有定位柱,两个定位柱分别固定于移动座、排出压盖底部圆心位置处,定位柱底部开设有凹槽,定位柱与导向凸起为配合构件,通过以上结构,多个支撑弹簧可以多点支撑阀体,保证阀座与对应阀体的密闭性。(The invention discloses a five-cylinder pump with a multipoint-supporting integral type hydraulic end structure, which comprises a driving motor, a crankshaft box body, a crosshead box body and a hydraulic end assembly, wherein the driving motor, the crankshaft box body, the crosshead box body and the hydraulic end assembly are all arranged on an assembly frame, a first connecting wheel is sleeved at the output shaft end of the driving motor and is connected with a second connecting wheel through a belt in a transmission manner, and a cylindrical roller shaft is rotatably arranged in the crankshaft box body. The valve body support structure comprises a plurality of support springs, a boss, a guide bulge, positioning columns, a movable seat, a discharge gland and a plurality of support springs, wherein the support springs are arranged at the outer edge of the boss in equal radian, the guide bulge is arranged on the boss and is arranged at the circle center position of the boss, the positioning columns are arranged at the bottoms of the movable seat and the discharge gland respectively and are fixed at the circle center positions of the bottoms of the movable seat and the discharge gland respectively, the bottom of each positioning column is provided with a groove, the positioning columns and the guide bulge are matched components, and through the structure.)

1. The five-cylinder pump with the multi-point support integral type hydraulic end structure is characterized by comprising a driving motor (1), a crankcase body (2), a crosshead case body (3) and a hydraulic end assembly (4), wherein the driving motor (1), the crankcase body (2), the crosshead case body (3) and the hydraulic end assembly (4) are all installed on an assembly frame (100), a first connecting wheel (5) is sleeved at an output shaft end of the driving motor (1), the first connecting wheel (5) is connected with a second connecting wheel (6) through belt transmission, a cylindrical roller shaft (8) is arranged in the crankcase body (2) in a rotating mode, the second connecting wheel (6) is sleeved at one end of a driving shaft rod (7), one end, far away from the second connecting wheel (6), of the driving shaft rod (7) is connected with the cylindrical roller shaft (8), a crankshaft (10) is connected to the cylindrical roller shaft (8) in a rotating mode, the hydraulic oil cylinder is characterized in that the crankshaft (10) is installed at one end of a crank (11), one end, far away from the crankshaft (10), of the crank (11) is rotatably connected with a crosshead (12), the crosshead (12) is fixedly connected with a pull rod (13), one end, far away from the crosshead (12), of the pull rod (13) is connected with a plunger (14), a lower through groove (16) and an upper through groove (17) are formed in a hydraulic end assembly (4), valve seats (18) are arranged at the lower side positions of the inner walls of the lower through groove (16) and the upper through groove (17), a plurality of limiting grooves (181) are formed in the valve seats (18), a plurality of circulation holes (182) are further formed in the valve seats (18), limiting columns (191) are inserted into the limiting grooves (181), the limiting columns (191) are all installed at the bottom of a valve body (19), a plurality of supporting springs (192) are installed on the valve body (19), and a plurality of supporting springs (, a plurality of supporting spring (192) that are located logical groove (17) on all are fixed in discharge gland (22) bottom, remove seat (20) top and install disk seat guide holder (21), remove and seted up a plurality of connecting channel (201) on seat (20).

2. The five-cylinder pump of integral fluid end structure of multiple spot support according to claim 1, characterized in that, the sound absorption cotton is installed to cross head box (3) inner wall, a plurality of support columns (25) are installed to cross head box (3) bottom, and a plurality of support columns (25) are installed in cross head box (3) bottom equidistantly, support column (25) bilateral symmetry is provided with two bracing struts (251), bracing strut (251) welds in cross head box (3) bottom, install two connecting rods (252) on support column (25), connecting rod (252) one end welding bracing strut (251) is kept away from to support column (25).

3. The five-cylinder pump with the multi-point support integrated hydraulic end structure as claimed in claim 1, wherein a hoop (15) is mounted on the pull rod (13), the pull rod (13) is fixedly connected with the plunger (14) through the hoop (15), a communication pipeline (24) is formed in the hydraulic end assembly (4), and the communication pipeline (24) is communicated with the upper through groove (17).

4. A multi-point support integrated fluid end structure five-cylinder pump according to claim 1, wherein the tie rod (13) is movably inserted through the connecting position of the crankcase (2) and the crosshead case (3), and the plunger (14) is movably inserted through the connecting position of the crosshead case (3) and the fluid end assembly (4).

5. The five-cylinder pump with the multi-point support integrated hydraulic end structure as claimed in claim 1, wherein the lower through groove (16) is arranged right below the upper through groove (17), the upper end of the discharge gland (22) is connected with the bottom of the pressure cap (23), the pressure cap (23) is in threaded connection with the inner wall of the upper side of the upper through groove (17), the two valve seats (18) are in threaded connection with the inner walls of the lower through groove (16) and the upper through groove (17), and the lower through groove (16) and the upper through groove (17) are respectively used for entering and exiting hydraulic oil.

6. The five-cylinder pump with the multi-point support integrated hydraulic end structure as claimed in claim 1, wherein an arc-shaped groove is formed in the upper surface of the valve seat (18), the number of the limiting grooves (181) and the number of the flow holes (182) are six, the six limiting grooves (181) are arranged on the valve seat (18) in an equal radian shape, the six flow holes (182) are arranged on the valve seat (18) in an equal radian shape, the six limiting grooves (181) are arranged at the outer edge position of the arc-shaped groove, the six flow holes (182) are arranged at the inner edge position of the arc-shaped groove, and the inner wall of each limiting groove (181) is in contact with the outer peripheral surface of the limiting column (191).

7. The five-cylinder pump of multi-point support integrated fluid end structure of claim 1, it is characterized in that a sealing ring is sleeved on the peripheral surface of the valve body (19), the sealing ring is sleeved on the peripheral surface of the valve body (19) close to the bottom, a plurality of limiting columns (191) are fixed at the bottom of the valve body (19) in equal radian, a boss is arranged on the top of the valve body (19), the boss is arranged in the middle of the top of the valve body (19), a plurality of lower supporting springs (192) are arranged at the outer edge of the boss in equal radian, a guide bulge (193) is arranged on the boss, the guide protrusion (193) is installed at the center position of the boss, positioning columns are installed at the bottoms of the moving seat (20) and the discharge gland (22), the two positioning columns are fixed at the center positions of the bottoms of the moving seat (20) and the discharge gland (22) respectively, a groove is formed in the bottom of each positioning column, and the positioning columns and the guide protrusion (193) are matched components.

8. The five-cylinder pump with the multipoint-supporting integral type hydraulic end structure is characterized in that a positioning hole (202) is formed in the moving seat (20), the positioning hole (202) is formed in the position of the center of a circle of the top of the moving seat (20), a plurality of connecting channels (201) are formed in the position of the outer edge of the moving seat (20) in an equal radian mode, a positioning protrusion (212) is inserted into the positioning hole (202), the bottom of the positioning protrusion (212) is abutted to the bottom of the inner wall of the positioning hole (202), two support protective sleeves (211) are installed on the valve seat guide seat (21), and the two support protective sleeves (211) are symmetrically installed on two sides of the valve seat guide seat (21).

9. The five-cylinder pump of a multi-point support integrated hydraulic end structure according to claim 1, wherein a supporting leg (9) is installed at the bottom of the crankcase body (2), a groove is formed in the bottom of the supporting leg (9), a plurality of telescopic springs are installed at the top of the inner wall of the groove of the supporting leg (9), the plurality of telescopic springs are installed on the upper surface of the lifting sheet (92), a plurality of guide rods (93) penetrate through the lifting sheet (92) in a movable mode, a spring is sleeved on each guide rod (93), the spring is arranged below the lifting sheet (92), the plurality of guide rods (93) are installed at the top of a bottom column (91), and the bottom column (91) is welded on the assembly frame (100).

10. The five-cylinder pump with a multipoint support integral hydraulic end structure as claimed in claim 1, wherein the five-cylinder pump works as follows:

the method comprises the following steps: an output shaft of a driving motor (1) drives a first connecting wheel (5) to rotate, the first connecting wheel (5) drives a second connecting wheel (6) to rotate through a belt, the second connecting wheel (6) drives a cylindrical roller shaft (8) to rotate through a driving shaft rod (7), the cylindrical roller shaft (8) is matched with a crankshaft (10) to drive a crank (11) to reciprocate and stretch, the crank (11) drives a pull rod (13) to reciprocate in a crosshead box body (3) through a crosshead (12), and then a plunger (14) reciprocates in a hydraulic end assembly (4);

step two: when the plunger (14) moves rightwards in the hydraulic end assembly (4), the lower through groove (16) and the upper through groove (17) are in negative pressure, so that a valve body (19) in the upper through groove (17) moves downwards, a limiting column (191) at the bottom of the valve body (19) is inserted into a limiting groove (181) at a corresponding position on a valve seat (18), the valve seat (18) in the upper through groove (17) blocks the valve body (19) to move downwards continuously, the valve body (19) in the lower through groove (16) moves upwards, the valve body (19) compresses a supporting spring (192) upwards, a guide bulge (193) on the valve body (19) is inserted into a positioning hole (202) at the bottom of a movable seat (20), the movable seat (20) drives a valve seat guide seat (21) to move upwards, hydraulic oil at the lower side enters the lower through a circulation hole (182) in the valve seat (18) in the lower through groove (16) to flow to the periphery of the plunger (14), when the plunger (14) stops, a support spring (192) at the bottom of a movable seat (20) in the lower through groove (16) pushes a valve body (19) downwards to an initial position, when the plunger (14) moves leftwards in the hydraulic end assembly (4), the lower through groove (16) and the upper through groove (17) are high-pressure, hydraulic oil applies pressure to the valve body (19) in the lower through groove (16) and the upper through groove (17), a valve seat (18) in the lower through groove (16) blocks the valve body (19) to descend, the hydraulic oil applies pressure to the valve body (19) in the upper through groove (17), and the hydraulic oil flows out from a communicating pipeline (24);

step three: during the working process, the crankcase body (2) vibrates, the vibration generated by the crankcase body (2) is buffered through the spring in the groove of the supporting leg (9), the lifting piece (92) is driven to reciprocate up and down, and the reciprocating process of the lifting piece (92) is buffered through the spring on the guide rod (93).

Technical Field

The invention relates to the technical field of five-cylinder pumps, in particular to a five-cylinder pump with a multipoint support integral type hydraulic end structure.

Background

Reciprocating pumps are positive displacement pumps that deliver or pressurize fluid by virtue of a piston, plunger or diaphragm reciprocating within a pump cylinder to alternately increase and decrease the working volume within the cylinder. The five-cylinder pump is a reciprocating pump which is more widely applied.

Patent document (201420160466.3) discloses a five-cylinder pump, in which a plurality of screw holes are formed on the surface of a cylinder body, and the distance between each screw hole is equal, so that the strength of the cylinder body can be ensured, and the firmness of the internal structure of the cylinder body can be improved while the strength is ensured; the plastic feet are arranged to be circular rings and four foot notes are arranged, so that the connection between the plastic feet and the crankcase is more compact and firm. The five-cylinder pump cannot solve the problem that the tightness between the valve seat and the valve body is not high in the prior art, and meanwhile, the valve body is easy to deviate in the reciprocating process in the hydraulic end assembly, so that the valve body is easy to damage, and large vibration and noise are easy to generate in the working process of the five-cylinder pump.

Disclosure of Invention

The invention aims to provide a five-cylinder pump with a multipoint-supporting integral hydraulic end structure, which solves the following technical problems: (1) the bottom of the positioning column is provided with a groove, and the positioning column and the guide bulge are matched components, so that the technical problem that the tightness of a valve seat and a corresponding valve body in the prior art is low is solved; (2) when the plunger moves rightwards in the hydraulic end assembly, the lower through groove and the upper through groove are in negative pressure, so that the valve body in the upper through groove moves downwards, the limiting column at the bottom of the valve body is inserted into the limiting groove at the corresponding position on the valve seat, the valve seat in the upper through groove stops the valve body to move downwards continuously, the valve body in the lower through groove moves upwards, the valve body compresses the supporting spring upwards, the guide protrusion on the valve body is inserted into the positioning hole at the bottom of the moving seat, the moving seat drives the valve seat guide seat to move upwards, the hydraulic oil at the lower side enters the lower through groove through the circulation hole on the valve seat in the lower through groove and then circulates to the periphery of the plunger, when the plunger stops, the supporting spring at the bottom of the moving seat in the lower through groove pushes the valve body downwards to the initial position, when the plunger moves leftwards in the hydraulic end assembly, the lower through groove and the upper through groove are in high, the hydraulic oil applies pressure to the valve body in the upper through groove, and the hydraulic oil flows out from the communicating pipeline, so that the technical problem that the valve body is easy to damage due to easy deviation in the reciprocating process of the valve body in the prior art is solved; (3) the crankcase body produces the vibration in the working process, cushions the vibration that the crankcase body produced through the spring in the landing leg recess, drives the lift piece simultaneously and reciprocates from top to bottom, and the spring on the guide bar cushions the reciprocal process of lift piece, solves among the prior art five jar pumps operation in-process vibration and the big technical problem of noise.

The purpose of the invention can be realized by the following technical scheme:

the five-cylinder pump comprises a driving motor, a crankshaft box body, a crosshead box body and a hydraulic end assembly, wherein the driving motor, the crankshaft box body, the crosshead box body and the hydraulic end assembly are all mounted on an assembly frame, a first connecting wheel is sleeved at an output shaft end of the driving motor and connected with a second connecting wheel through belt transmission, a cylindrical roller shaft is arranged in the crankshaft box body in a rotating mode and sleeved at one end of a driving shaft rod, one end, far away from the crosshead of the second connecting wheel, of the driving shaft rod is connected with the cylindrical roller shaft, a crankshaft is connected to the cylindrical roller shaft in a rotating mode and mounted at one end of the crank, one end, far away from the crankshaft, of the crank is connected with a crosshead in a rotating mode, the crosshead is fixedly connected with a pull rod, one end, far away from the pull rod, of the pull rod is connected with a plunger, a lower through groove is formed, Go up logical groove, lead to the groove down, go up logical inslot side position all to be provided with the disk seat, a plurality of spacing grooves have been seted up on the disk seat, a plurality of circulation holes have still been seted up on the disk seat, it has spacing post to peg graft on the spacing groove, and a plurality of spacing posts are all installed in the valve body bottom, install a plurality of supporting spring on the valve body, a plurality of supporting spring that lie in logical inslot down all are fixed in and remove the seat bottom, lie in a plurality of supporting spring that lead to the inslot and all are fixed in discharge gland bottom, remove the seat top and install the disk seat guide holder, remove and seted up a plurality.

Further, cross head box inner wall is installed and is inhaled the sound cotton, cross head bottom half is installed a plurality of support columns, and equidistant the installing in cross head bottom half of the support column, support column bilateral symmetry is provided with two bearing diagonal poles, the bearing diagonal pole welds in cross head bottom half, install two connecting rods on the support column, connecting rod one end welding bearing diagonal pole is kept away from to the support column.

Further, install the clamp on the pull rod, the pull rod passes through clamp fixed connection plunger, the intercommunication pipeline has been seted up in the hydraulic end assembly, the intercommunication pipeline is linked together with last logical groove.

Furthermore, the pull rod movably penetrates through the connecting position of the crankcase body and the crosshead case body, and the plunger movably penetrates through the connecting position of the crosshead case body and the hydraulic end assembly.

Further, lead to the groove and set up under last logical groove down, discharge gland upper end is connected and is pressed the cap bottom, press the cap and lead to groove upside inner wall looks spiro union on with last, two disk seats respectively with lead to the groove down, lead to inslot wall looks spiro union on, lead to the groove down, go up to lead to the groove and be used for business turn over hydraulic oil respectively.

Further, the arc recess has been seted up to the disk seat upper surface, spacing groove and opening quantity are six, and six spacing grooves are equal radian form and offer on the disk seat, and six openings are equal radian form and offer on the disk seat, and arc recess outer fringe position department is offered to six spacing grooves, and arc recess inner edge position department is offered to six openings, spacing inslot wall contacts with spacing post outer peripheral face.

Further, the valve body outer peripheral face cover is equipped with the sealing washer, and the sealing washer cover is located the valve body and is close to the bottom global, and radians such as a plurality of spacing posts are fixed in the valve body bottom, the boss is installed at the valve body top, and the boss is installed in valve body top intermediate position, and radians such as a plurality of under bracing springs are installed in boss outer fringe position, install the direction arch on the boss, the direction arch is installed in boss centre of a circle position, remove seat, discharge gland bottom and all install the reference column, two reference columns are fixed in respectively and are removed seat, discharge gland bottom centre of a circle position department, and the recess has been seted up.

Furthermore, a positioning hole is formed in the movable seat, the positioning hole is formed in the position of the circle center of the top of the movable seat, a plurality of connecting channels and other radians are formed in the position of the outer edge of the movable seat, a positioning protrusion is inserted into the positioning hole, the bottom of the positioning protrusion is abutted to the bottom of the inner wall of the positioning hole, two support protective sleeves are mounted on the valve seat guide seat, and the two support protective sleeves are symmetrically mounted on two sides of the valve seat guide seat.

Further, the landing leg is installed to bent axle box bottom, the landing leg bottom is seted up flutedly, a plurality of expanding spring are installed at the recess inner wall top of landing leg, and a plurality of expanding spring are installed in lift upper surface, the activity runs through on the lift piece has a plurality of guide bars, the cover is equipped with the spring on the guide bar, and the spring sets up in lift piece below, and a plurality of guide bars are installed in the foundation top, the foundation welds on the assembly frame.

Further, the working process of the five-cylinder pump is as follows:

the method comprises the following steps: an output shaft of the driving motor drives the first connecting wheel to rotate, the first connecting wheel drives the second connecting wheel to rotate through a belt, the second connecting wheel drives the cylindrical roller shaft to rotate through a driving shaft rod, the cylindrical roller shaft is matched with the crankshaft to drive the crank to extend and retract in a reciprocating manner, the crank drives the pull rod to reciprocate in the crosshead box through the crosshead, and then the plunger reciprocates in the hydraulic end assembly;

step two: when the plunger moves rightwards in the hydraulic end assembly, the lower through groove and the upper through groove are in negative pressure, so that the valve body in the upper through groove moves downwards, the limiting column at the bottom of the valve body is inserted into the limiting groove at the corresponding position on the valve seat, the valve seat in the upper through groove stops the valve body to move downwards continuously, the valve body in the lower through groove moves upwards, the valve body compresses the supporting spring upwards, the guide protrusion on the valve body is inserted into the positioning hole at the bottom of the moving seat, the moving seat drives the valve seat guide seat to move upwards, the hydraulic oil at the lower side enters the lower through groove through the circulation hole on the valve seat in the lower through groove and then circulates to the periphery of the plunger, when the plunger stops, the supporting spring at the bottom of the moving seat in the lower through groove pushes the valve body downwards to the initial position, when the plunger moves leftwards in the hydraulic end assembly, the lower through groove and the upper through groove are in high, the hydraulic oil applies pressure to the valve body in the upper through groove, and the hydraulic oil flows out from the communicating pipeline;

step three: the crankcase body vibrates in the working process, the vibration generated by the crankcase body is buffered through the spring in the supporting leg groove, the lifting piece is driven to reciprocate up and down, and the reciprocating process of the lifting piece is buffered through the spring on the guide rod.

The invention has the beneficial effects that:

(1) according to the five-cylinder pump with the multipoint-support integral type hydraulic end structure, the lower support springs are arranged at the outer edge of the boss in an equal radian mode, the guide protrusions are arranged on the boss and are arranged at the circle center positions of the boss, the positioning columns are arranged at the bottoms of the movable seat and the discharge gland respectively and are fixed at the circle center positions of the bottoms of the movable seat and the discharge gland respectively, the bottoms of the positioning columns are provided with the grooves, the positioning columns and the guide protrusions are matched components, and through the structure, the valve body can be supported by the support springs in a multipoint mode, and the tightness of the valve seat and the corresponding valve body is guaranteed;

(2) when the plunger moves rightwards in the hydraulic end assembly, the lower through groove and the upper through groove are in negative pressure, so that the valve body in the upper through groove moves downwards, the limiting column at the bottom of the valve body is inserted into the limiting groove at the corresponding position on the valve seat, the valve seat in the upper through groove stops the valve body to move downwards continuously, the valve body in the lower through groove moves upwards, the valve body compresses the supporting spring upwards, the guide protrusion on the valve body is inserted into the positioning hole at the bottom of the moving seat, the moving seat drives the valve seat guide seat to move upwards, the hydraulic oil at the lower side enters the lower through groove through the circulation hole on the valve seat in the lower through groove and then circulates to the periphery of the plunger, when the plunger stops, the supporting spring at the bottom of the moving seat in the lower through groove pushes the valve body downwards to the initial position, when the plunger moves leftwards in the hydraulic end assembly, the lower through groove and the upper through groove are in high, the hydraulic oil applies pressure to the valve body in the upper through groove, the hydraulic oil flows out from the communicating pipeline, through the structural arrangement, the five-cylinder pump is ensured to work, the valve seat guide seat is designed on the moving seat in the lower through groove, the stability of the moving seat in the reciprocating process of the lower through groove is ensured, and the condition of deviation in the reciprocating process of the valve body is avoided, so that the valve body is prevented from being damaged;

(3) crankcase produces the vibration in the course of the work, cushions the vibration that the crankcase produced through the spring in the landing leg recess, drives the lift piece simultaneously and reciprocates from top to bottom, and the spring on the guide bar cushions the reciprocal process of lift piece, through above structure, effectively reduces the vibration that produces in the five jar pump working process to guarantee the operation of five jar pumps steady, reduce the noise that the during operation produced simultaneously.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a five-cylinder pump with a multi-point support integrated hydraulic end structure according to the present invention;

FIG. 2 is a cross-sectional view of the crankcase, crosshead case, fluid end assembly of the present invention;

FIG. 3 is a top view of the valve seat of the present invention;

FIG. 4 is a schematic structural view of the valve body of the present invention;

FIG. 5 is a top view of the valve body of the present invention;

FIG. 6 is a schematic view of the structure of the movable base of the present invention;

FIG. 7 is a top view of the mobile station of the present invention;

FIG. 8 is a side view of the valve seat guide of the present invention;

fig. 9 is an internal structural view of the leg of the present invention.

In the figure: 100. an assembly frame; 1. a drive motor; 2. a crankcase body; 3. a crosshead case; 4. a fluid end assembly; 5. a first connecting wheel; 6. a second fifth wheel; 7. a drive shaft; 8. a cylindrical roller shaft; 9. a support leg; 91. a bottom pillar; 92. a lifting sheet; 93. a guide bar; 10. a crankshaft; 11. a crank; 12. a crosshead; 13. a pull rod; 14. a plunger; 15. clamping a hoop; 16. a lower through groove; 17. an upper through groove; 18. a valve seat; 181. a limiting groove; 182. a flow-through hole; 19. a valve body; 191. a limiting column; 192. a support spring; 193. a guide projection; 20. a movable seat; 201. a connecting channel; 202. positioning holes; 21. a valve seat guide seat; 211. a stent protective sheath; 212. positioning the projection; 22. a discharge gland; 23. pressing the cap; 24. a communicating pipe; 25. a support pillar; 251. an inclined support rod; 252. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention is a five-cylinder pump with a multi-point supporting integrated fluid end structure, including a driving motor 1, a crankcase 2, a crosshead case 3, and a fluid end assembly 4, where the driving motor 1, the crankcase 2, the crosshead case 3, and the fluid end assembly 4 are all mounted on an assembly frame 100, an output shaft of the driving motor 1 is sleeved with a first connecting wheel 5, the first connecting wheel 5 is connected with a second connecting wheel 6 through a belt transmission, a cylindrical roller shaft 8 is rotatably disposed in the crankcase 2, the second connecting wheel 6 is sleeved at one end of the driving shaft 7, one end of the driving shaft 7 away from the second connecting wheel 6 is connected with the cylindrical roller shaft 8, the cylindrical roller shaft 8 is rotatably connected with a crankshaft 10, the crankshaft 10 is mounted at one end of a crank 11, one end of the crank 11 away from the crankshaft 10 is rotatably connected with a crosshead 12, the crosshead 12 is fixedly connected with a pull rod 13, one end of the pull rod 13 away, logical groove 16 under having seted up in fluid end assembly 4, go up logical groove 17, logical groove 16 down, it all is provided with disk seat 18 to go up logical groove 17 inner wall downside position, a plurality of spacing grooves 181 have been seted up on disk seat 18, still a plurality of circulation holes 182 have been seted up on disk seat 18, it has spacing post 191 to peg graft on the spacing groove 181, a plurality of spacing posts 191 are all installed in 19 bottoms of valve body, install a plurality of supporting spring 192 on the valve body 19, a plurality of supporting spring 192 that lie in logical groove 16 down all are fixed in and remove 20 bottoms of seat, a plurality of supporting spring 192 that lie in logical groove 17 all are fixed in discharge gland 22 bottoms, remove 20 tops of seat and install disk seat guide 21, remove and seted up a plurality of connecting channel 201.

Specifically, the sound cotton is inhaled to 3 inner walls of cross head box, and a plurality of support columns 25 are installed to cross head box 3 bottom, and equidistant the installation in cross head box 3 bottom of a plurality of support columns 25, and support column 25 bilateral symmetry is provided with two bearing diagonal 251, and bearing diagonal 251 welds in cross head box 3 bottom, installs two connecting rods 252 on the support column 25, and connecting rod 252 one end welding bearing diagonal 251 is kept away from to support column 25. The pull rod 13 is provided with a hoop 15, the pull rod 13 is fixedly connected with the plunger 14 through the hoop 15, a communicating pipeline 24 is arranged in the hydraulic end assembly 4, and the communicating pipeline 24 is communicated with the upper through groove 17. The pull rod 13 movably penetrates through the connecting position of the crankcase body 2 and the crosshead case body 3, and the plunger 14 movably penetrates through the connecting position of the crosshead case body 3 and the hydraulic end assembly 4. The lower through groove 16 is arranged right below the upper through groove 17, the upper end of the discharge gland 22 is connected with the bottom of a pressing cap 23, the pressing cap 23 is in threaded connection with the inner wall of the upper side of the upper through groove 17, the two valve seats 18 are in threaded connection with the inner walls of the lower through groove 16 and the upper through groove 17 respectively, and the lower through groove 16 and the upper through groove 17 are used for feeding and discharging hydraulic oil respectively. The upper surface of the valve seat 18 is provided with an arc-shaped groove, the number of the limiting grooves 181 and the number of the circulation holes 182 are six, the six limiting grooves 181 are arranged on the valve seat 18 in an equal radian shape, the six circulation holes 182 are arranged on the valve seat 18 in an equal radian shape, the six limiting grooves 181 are arranged at the outer edge position of the arc-shaped groove, the six circulation holes 182 are arranged at the inner edge position of the arc-shaped groove, and the inner wall of the limiting groove 181 is in contact with the outer peripheral surface of the limiting column 191. 19 outer peripheral face covers of valve body is equipped with the sealing washer, the sealing washer cover is located valve body 19 and is close to bottom global, radian such as a plurality of spacing posts 191 is fixed in the 19 bottom of valve body, the boss is installed at 19 top intermediate position of valve body, radian such as a plurality of bottom support springs 192 are installed in boss outer fringe position, install guide protrusion 193 on the boss, guide protrusion 193 installs in boss centre of a circle position, remove seat 20, the reference column is all installed to discharge gland 22 bottom, two reference columns are fixed in respectively and are removed seat 20, discharge gland 22 bottom centre of a circle position department, the reference column bottom is seted up flutedly, the reference column is the cooperation component with guide protrusion. The movable seat 20 is provided with a positioning hole 202, the positioning hole 202 is arranged at the position of the center of the circle at the top of the movable seat 20, a plurality of connecting channels 201 are arranged at the position of the outer edge of the movable seat 20 at equal radians, the positioning hole 202 is inserted with a positioning bulge 212, the bottom of the positioning bulge 212 is abutted against the bottom of the inner wall of the positioning hole 202, the valve seat guide seat 21 is provided with two support protective sleeves 211, and the two support protective sleeves 211 are symmetrically arranged at two sides of the valve seat guide seat 21. Landing leg 9 is installed to 2 bottoms of crankcase, and landing leg 9 is seted up flutedly in the bottom, and a plurality of expanding spring are installed at the recess inner wall top of landing leg 9, and a plurality of expanding spring are installed in lift piece 92 upper surface, and the activity runs through on the lift piece 92 has a plurality of guide bars 93, and the cover is equipped with the spring on the guide bar 93, and the spring sets up in lift piece 92 below, and a plurality of guide bars 93 are installed in sill 91 top, and sill 91 welds on assembly frame 100.

Referring to fig. 1 to 9, the operation of the five-cylinder pump with a multi-point supporting integrated hydraulic end structure of the present embodiment is as follows:

the method comprises the following steps: an output shaft of a driving motor 1 drives a first connecting wheel 5 to rotate, the first connecting wheel 5 drives a second connecting wheel 6 to rotate through a belt, the second connecting wheel 6 drives a cylindrical roller shaft 8 to rotate through a driving shaft rod 7, the cylindrical roller shaft 8 is matched with a crankshaft 10 to drive a crank 11 to extend and retract in a reciprocating mode, the crank 11 drives a pull rod 13 to reciprocate in a crosshead box body 3 through a crosshead 12, and then a plunger 14 reciprocates in a hydraulic end assembly 4;

step two: when the plunger 14 moves rightwards in the hydraulic end assembly 4, the lower through groove 16 and the upper through groove 17 are in negative pressure, and then the valve body 19 in the upper through groove 17 moves downwards, the limiting column 191 at the bottom of the valve body 19 is inserted into the limiting groove 181 at the corresponding position on the valve seat 18, the valve seat 18 in the upper through groove 17 blocks the valve body 19 from continuously moving downwards, the valve body 19 in the lower through groove 16 moves upwards, the valve body 19 compresses the supporting spring 192 upwards, the guide projection 193 on the valve body 19 is inserted into the positioning hole 202 at the bottom of the movable seat 20, the movable seat 20 drives the valve seat guide seat 21 to move upwards, the hydraulic oil at the lower side enters the lower through groove 16 through the flow hole 182 on the valve seat 18 in the lower through groove 16 and then flows to the periphery of the plunger 14, when the plunger 14 stops, the supporting spring 192 at the bottom of the movable seat 20 in the lower through groove 16 pushes the valve body 19 downwards to the initial position, and when the plunger 14 moves leftwards, the hydraulic oil applies pressure to the valve body 19 in the lower through groove 16 and the upper through groove 17, the valve seat 18 in the lower through groove 16 prevents the valve body 19 from descending, the hydraulic oil applies pressure to the valve body 19 in the upper through groove 17, and the hydraulic oil flows out from the communicating pipeline 24;

step three: during the working process, the crankcase body 2 vibrates, the vibration generated by the crankcase body 2 is buffered through the spring in the groove of the supporting leg 9, the lifting piece 92 is driven to reciprocate up and down, and the reciprocating process of the lifting piece 92 is buffered through the spring on the guide rod 93.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.