CN108691737B - A kind of piston high-density pump of hydraulic-driven - Google Patents

A kind of piston high-density pump of hydraulic-driven Download PDF

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Publication number
CN108691737B
CN108691737B CN201810480340.7A CN201810480340A CN108691737B CN 108691737 B CN108691737 B CN 108691737B CN 201810480340 A CN201810480340 A CN 201810480340A CN 108691737 B CN108691737 B CN 108691737B
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CN
China
Prior art keywords
fluid port
hydraulic
hydraulic fluid
valve
flow hole
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Application number
CN201810480340.7A
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Chinese (zh)
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CN108691737A (en
Inventor
邵玉刚
Original Assignee
江苏佳佩环保机械设备有限公司
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Priority to CN201810480340.7A priority Critical patent/CN108691737B/en
Publication of CN108691737A publication Critical patent/CN108691737A/en
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Publication of CN108691737B publication Critical patent/CN108691737B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves

Abstract

The invention discloses a kind of piston high-density pumps of hydraulic-driven, including hydraulic cylinder, the mud pump housing, piston rod, and are arranged between the hydraulic cylinder and the mud pump housing for connecting the link block of the hydraulic cylinder and the mud pump housing;The piston rod is slidably connected in the link block, and its left end is located in the hydraulic cylinder, and right end end is located in the slush pump body;The hydraulic piston being connected with the piston rod left end is slidably connected in the hydraulic cylinder, and the mud piston being connected with the piston rod right end is slidably connected in the slush pump body;The left end of the hydraulic cylinder is equipped with hydraulic end cap, and the hydraulic end covers the automatic diverter valve for being equipped with and moving back and forth for controlling the hydraulic piston;The right end of the mud pump housing is equipped with mud end cap, and the mud end cap is equipped with for controlling the check valve assembly that mud passes in and out in the slush pump body;The slush pump is not only simple in structure, and is not necessarily to electric control.

Description

A kind of piston high-density pump of hydraulic-driven
Technical field
The present invention relates to mud pump technical field, specially a kind of piston high-density pump of hydraulic-driven.
Background technique
With the large-scale application of heavy mechanical equipment, hydraulic-driven obtains extensively as a kind of critically important driving method Using hydraulic system and its relevant technologies also reach its maturity.Especially in slush pump applied technical field, traditional slush pump is It realizes that piston moves back and forth in cylinder body using crank link mechanism in turn to pump out mud, the slush pump of this mode exports arteries and veins It rushes big, unstable, and is easy to block under bad working environments, in addition realizes reciprocating motion of the pistons in current hydraulic slurry pump Reversal valve, mostly use solenoid directional control valve and displacement sensor to match control commutation greatly, all by close to switch control sensor, It is unstable, unreliable to commutate, and structure is complicated, and replacement is inconvenient;The control circuit part of reversing arrangement is using circuit board control System, because wiring board is non-standard, and production processing is relatively difficult, and maintenance is just extremely difficult after damage, while if there is Also be inconvenient to search reason after problem, greatly reduce production efficiency;Existing reversing arrangement, if long-term lasting energization, very It is easily damaged gadget, the requirement being electrified for a long time is able to satisfy, has also influenced production efficiency to a certain extent.And certain fields There is extremely stringent requirement of explosion proof, it is desirable that simplification system as far as possible is intervened without extraneous, is such as applied in petroleum mine, coal filling Slush pump (having requirement of explosion proof) in the fields such as note, natural gas compressing station, a kind of reciprocating mud of hydraulic-driven of desirability The intervention for pumping to meet without personnel's short distance can voluntarily commutate but also meet the needs of explosion-proof.
Summary of the invention
(1) technical problems to be solved
It is an object of the invention to overcome the defect in the prior art, provide a kind of structure it is simple, it is easy to use and run The piston high-density pump of stable hydraulic-driven.
(2) technical solution
To achieve the above object, the present invention provides a kind of piston high-density pumps of hydraulic-driven, including hydraulic cylinder, mud Stuff pump body, piston rod, and be arranged between the hydraulic cylinder and the mud pump housing for connect the hydraulic cylinder and The link block of the mud pump housing;The piston rod is slidably connected in the link block, and its left end is located at the hydraulic cylinder In vivo, right end end is located in the slush pump body;It slidably connects in the hydraulic cylinder and is connected with the piston rod left end Hydraulic piston slidably connects the mud piston being connected with the piston rod right end in the slush pump body;The hydraulic cylinder Left end hydraulic end cap is installed, the hydraulic end covers the automatic reverse for being equipped with and moving back and forth for controlling the hydraulic piston Valve;The right end of the mud pump housing is equipped with mud end cap, and the mud end cap is equipped with for controlling in the slush pump body The check valve assembly of mud disengaging;The check valve assembly includes that mud passes in and out in rodless cavity in the slush pump body for controlling The first check valve and second one-way valve, and it is unidirectional for controlling in the slush pump body third that mud passes in and out in rod chamber Valve and the 4th check valve;It is equipped in the slush pump body for being connected to rod chamber in the third one-way valved outlet and slush pump body First runner, and the second flow channel for being connected to rodless cavity in the 4th check valve inlet and slush pump body.By upper It states the hydraulic cylinder that the hydraulic slurry pump is set and mud pump housing Integral connection structure is more compact, and mud piston is reciprocal Movement is without automatically controlled.
In further technical solution, the automatic diverter valve includes internal equipped with P hydraulic fluid port, A hydraulic fluid port, B hydraulic fluid port, T hydraulic fluid port Valve body, the left and right ends of the valve body are equipped with end cap, the master for control port on-off are slidably connected in the valve body The inside of spool, the main valve plug is axially arranged with perforative mounting hole along it, slidably connects pilot valve in the mounting hole; Axially first shoulder, the second shoulder, third shoulder are successively arranged from left to right along it on the side of the main valve plug, described first The first master control chamber is formed between shoulder and the end cap, and the second master control chamber is formed between the third shoulder and the end cap;Institute It states and forms the first first guide cavity between the left end of main valve plug and the end cap, formed between the right end of the main valve plug and the end cap Second first guide cavity;When the main valve plug is located at left position, the P hydraulic fluid port is communicated with the B hydraulic fluid port, the A hydraulic fluid port and the T Hydraulic fluid port communicates;When the main valve plug is located at location right, the P hydraulic fluid port is communicated with the A hydraulic fluid port, the B hydraulic fluid port and T oil Mouth communicates;The side of the first shoulder is equipped with the first through flow hole for being connected to the mounting hole and the T hydraulic fluid port;It is described The side of third shoulder is equipped with the second through flow hole for being connected to the mounting hole and the T hydraulic fluid port;Second shoulder Side is equipped with the third through flow hole for being connected to the mounting hole and the P hydraulic fluid port;It is equipped in the main valve plug for being connected to 4th through flow hole of the first master control chamber and the mounting hole, and for being connected to the second master control chamber and the mounting hole The 5th through flow hole;When the pilot valve is located at left position, the third through flow hole is communicated with the 4th through flow hole, institute The second through flow hole is stated to communicate with the 5th through flow hole;When the pilot valve is located at location right, the third through flow hole with 5th through flow hole communicates, and first through flow hole is communicated with the 4th through flow hole;It is additionally provided on the end cap for controlling Make the overflow-valve device of the pilot valve movement, and the push rod device for controlling the pilot valve initial position.
Through the above technical solutions, push rod device only need to be pushed manually before P hydraulic fluid port oil inlet, pilot valve is made to be in one A initial position (being equivalent to launch computer), if being pulled to pilot valve by push rod device is moved to the left to limit position It sets, then the oil liquid of P hydraulic fluid port enters the first master control by third through flow hole (and P hydraulic fluid port communicates always), mounting hole, the 4th through flow hole Chamber, then main valve plug moves right (if before main valve plug not extreme position on the right) or is maintained at the right extreme position (such as Just extreme position on the right before fruit), such P hydraulic fluid port lead to the logical T hydraulic fluid port of A hydraulic fluid port, B hydraulic fluid port.When A hydraulic fluid port pressure rise to overflow valve When the pressure of device setting, oil liquid enters the first first guide cavity by A hydraulic fluid port, pushes pilot valve to move right, wherein the second guide The oil liquid of chamber flows back to T hydraulic fluid port by overflow-valve device, and the pressure of such P hydraulic fluid port is by third through flow hole, mounting hole, the 5th through-flow Hole enters the second master control chamber, and the intracavitary oil liquid of the first master control passes through the 4th through flow hole, mounting hole, the first through flow hole and T hydraulic fluid port phase Logical, main valve plug is moved to the left and is switched to the logical B hydraulic fluid port of P hydraulic fluid port, A hydraulic fluid port leads to T hydraulic fluid port position.When the pressure rise of B hydraulic fluid port is to overflow When the pressure of valve gear setting, oil liquid enters the second first guide cavity by B hydraulic fluid port, and pilot valve is pushed to be moved to the left, the first first guide cavity Oil liquid T hydraulic fluid port is flowed back to by overflow-valve device, the oil liquid of such P hydraulic fluid port passes through third through flow hole, mounting hole, the 4th through flow hole Into the first master control chamber, the oil liquid of the second master control chamber is communicated by the 5th through flow hole, mounting hole, the second through flow hole and T hydraulic fluid port, main Spool moves right and is switched to the logical A hydraulic fluid port of P hydraulic fluid port, B hydraulic fluid port leads to T hydraulic fluid port position, so far forms circulation, is not necessarily to automatically controlled control.
In further technical solution, the overflow-valve device includes the first overflow valve being arranged on the end cap and the The oil inlet of two overflow valves, first overflow valve passes through the 6th through flow hole being arranged in the end cap and the A hydraulic fluid port phase Logical, overflow port passes through the 7th through flow hole being arranged in the end cap and communicates with the described first first guide cavity;It is set in the end cap There is the 8th through flow hole for being connected to the 7th through flow hole and the T hydraulic fluid port, the first resistance is installed in the 8th through flow hole Buddhist nun's device;The oil inlet of second overflow valve is identical as the B hydraulic fluid port by the 9th through flow hole being arranged in the end cap, Overflow port passes through the tenth through flow hole being arranged in the end cap and communicates with the described second first guide cavity;It is equipped with and is used in the end cap It is connected to the 11st through flow hole of the tenth through flow hole and the T hydraulic fluid port, the second damping is installed in the 11st through flow hole Device.
In further technical solution, the push rod device includes being plugged in the end cap and being located at the guide The first push rod and the second push rod of spool left and right ends.
In further technical solution, the both ends on the main valve plug in mounting hole are separately installed with for preventing the elder generation Guide valve core is detached from the first screw plug and the second screw plug of the mounting hole, is axially arranged with along it for described on first screw plug First spliced eye of one push rod grafting is axially arranged on second screw plug along it and inserts for the second of the second push rod grafting Connect hole.
In further technical solution, it is axially successively arranged the 4th from left to right along it on the side of the pilot valve Shoulder, the 5th shoulder, the 6th shoulder, the 7th shoulder, first through flow hole and the mounting hole connectivity part are located at described 4th Between shoulder and the 5th shoulder, second through flow hole and the mounting hole connectivity part are located at the 6th shoulder and described Between seven shoulders, the third through flow hole and the mounting hole connectivity part be located at the 5th shoulder and the 6th shoulder it Between.
In further technical solution, it is equipped in the hydraulic end cap for being connected to the A hydraulic fluid port and the hydraulic cylinder The third flow channel of interior rodless cavity;The 4th runner being connected to the B hydraulic fluid port, the hydraulic cylinder are additionally provided in the hydraulic end cap It is interior to be equipped with equipped with the 5th runner being connected to the 4th runner, in the link block for being connected to the 5th runner and described 6th runner of rod chamber in hydraulic cylinder.
(3) beneficial effect
Compared with prior art, technical solution of the present invention have the advantage that the hydraulic slurry pump hydraulic cylinder and Mud pump housing Integral connection structure is more compact, and the reciprocating motion of mud piston is by automatic diverter valve according to hydraulic piston After reaching both ends extreme position, automatic feedback control, without automatically controlled, more reliable and adapt to the complicated and explosion-proof ring of operating condition Border;In addition when the automatic diverter valve works, before P hydraulic fluid port oil inlet, push rod device only need to be pushed manually, is in pilot valve One initial position (being equivalent to launch computer), if being pulled to pilot valve by push rod device is moved to the left to limit position It sets, then the oil liquid of P hydraulic fluid port enters the first master control by third through flow hole (and P hydraulic fluid port communicates always), mounting hole, the 4th through flow hole Chamber, then main valve plug moves right (if before main valve plug not extreme position on the right) or is maintained at the right extreme position (such as Just extreme position on the right before fruit), such P hydraulic fluid port lead to the logical T hydraulic fluid port of A hydraulic fluid port, B hydraulic fluid port.When A hydraulic fluid port pressure rise to overflow valve When the pressure of device setting, oil liquid enters the first first guide cavity by A hydraulic fluid port, pushes pilot valve to move right, wherein the second guide The oil liquid of chamber flows back to T hydraulic fluid port by overflow-valve device, and the pressure of such P hydraulic fluid port is by third through flow hole, mounting hole, the 5th through-flow Hole enters the second master control chamber, and the intracavitary oil liquid of the first master control passes through the 4th through flow hole, mounting hole, the first through flow hole and T hydraulic fluid port phase Logical, main valve plug is moved to the left and is switched to the logical B hydraulic fluid port of P hydraulic fluid port, A hydraulic fluid port leads to T hydraulic fluid port position, so far forms circulation, is not necessarily to automatically controlled control System;The valve arrangement is simple, easy to process.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the piston high-density pump of hydraulic-driven in the present embodiment;
Fig. 2 is the first section structure diagram of automatic diverter valve in the present embodiment;
Fig. 3 is the second section structure diagram of automatic diverter valve in the present embodiment;
Fig. 4 is the hydraulic schematic diagram of automatic diverter valve in the present embodiment;
Fig. 5 is the schematic diagram of the section structure of main valve core assembly in the present embodiment.
The corresponding component names of appended drawing reference are: 1. end caps;1.1. the 6th through flow hole;1.2. the 7th through flow hole;1.3. the Eight through flow holes;1.4. the 9th through flow hole;1.5. the tenth through flow hole;1.6. the 11st through flow hole;1a. the first master control chamber;1b. second Master control chamber;1c. third master control chamber;The 4th master control chamber of 1d.;3. pilot valve;301. the 4th shoulders;302. the 5th shoulders;303. 6th shoulder;304. the 7th shoulders;4. main valve plug;401. mounting hole;402. first shoulder;403. second shoulders;404. third Shoulder;4.1. the first through flow hole;4.2. third through flow hole;4.3. the 5th through flow hole;4.4. the second through flow hole;4.5. the 4th is through-flow Hole;The first overflow valve of 5a.;The second overflow valve of 5b.;The first damper of 6a.;The second damper of 6b.;The first screw plug of 7a.;7b. Two screw plugs;701. first spliced eyes;702. second spliced eyes;The first push rod of 8a.;The second push rod of 8b.;9. valve body;901.P oily Mouthful;902.A hydraulic fluid port;903.B hydraulic fluid port;904.T hydraulic fluid port;11. hydraulic cylinder;12. the mud pump housing;13. piston rod;14. link block; 15. hydraulic piston;16. mud piston;17. hydraulic end cap;18. mud end cap;19. the first check valve;20. second one-way valve; 21. third check valve;22. the 4th check valve;23. first runner;24. second flow channel;25. third flow channel;26. the 4th runner; 27. the 5th runner;28. the 6th runner.
Specific embodiment
Fig. 1-5 is please referred to, the present invention provides a kind of piston high-density pump of hydraulic-driven, including hydraulic cylinder 11, mud The pump housing 12, piston rod 13, and be arranged between the hydraulic cylinder 11 and the mud pump housing 12 described hydraulic for connecting The link block 14 of cylinder body 11 and the mud pump housing 12;The piston rod 13 is slidably connected in the link block 14, and it is left End is located in the hydraulic cylinder 11, and right end end is located in the mud pump housing 12;It is slidably connected in the hydraulic cylinder 11 The hydraulic piston 15 being connected with 13 left end of piston rod, slidably connects in the mud pump housing 12 and the piston rod 13 is right The connected mud piston 16 in end;The left end of the hydraulic cylinder 11 is equipped with hydraulic end cap 17, and the hydraulic end cap 17 is equipped with The automatic diverter valve moved back and forth for controlling the hydraulic piston 15;The right end of the mud pump housing 12 is equipped with mud end cap 18, the mud end cap 18 is equipped with for controlling the check valve assembly that mud passes in and out in the slush pump body;The check valve Component includes the first check valve 19 and second one-way valve 20 for controlling mud disengaging in rodless cavity in the mud pump housing 12, And for controlling the third check valve 21 and the 4th check valve 22 that mud passes in and out in rod chamber in the mud pump housing 12;It is described The first runner 23 for being connected to rodless cavity in the outlet of third check valve 21 and slush pump body is equipped in the mud pump housing 12, with And the second flow channel 24 for being connected to rod chamber in 22 import of the 4th check valve and slush pump body.
The automatic diverter valve includes the internal valve body 9 for being equipped with P hydraulic fluid port 901, A hydraulic fluid port 902, B hydraulic fluid port 903, T hydraulic fluid port 904, The left and right ends of the valve body 9 are equipped with end cap 1, and the main valve plug for control port on-off is slidably connected in the valve body 9 4, the inside of the main valve plug 4 is axially arranged with perforative mounting hole 401 along it, slidably connects guide in the mounting hole 401 Spool 3;It is axially successively arranged first shoulder 402, the second shoulder 403, third from left to right along it on the side of the main valve plug 4 Shoulder 404, forms the first master control chamber 1a between the first shoulder 402 and the end cap 1, the third shoulder 404 and described The second master control chamber 1b is formed between end cap 1;The first first guide cavity 1c, institute are formed between the left end and the end cap 1 of the main valve plug 4 It states and forms the second first guide cavity 1d between the right end of main valve plug 4 and the end cap 1;The side of the first shoulder 402, which is equipped with, to be used In the first through flow hole 4.1 of the connection mounting hole 401 and the T hydraulic fluid port 904;The side of the third shoulder 404 is equipped with For being connected to the second through flow hole 4.4 of the mounting hole 401 and the T hydraulic fluid port 904;It is set on the side of second shoulder 402 There is the third through flow hole 4.2 for being connected to the mounting hole 401 and the P hydraulic fluid port 901;It is equipped in the main valve plug 4 for connecting Lead to the 4th through flow hole 4.5 of the first master control chamber 1a and the mounting hole 401, and for being connected to the second master control chamber 1b With the 5th through flow hole 4.3 of the mounting hole 401;It is additionally provided on the end cap 1 for controlling overflowing for the movement of pilot valve 3 Flow valve device, and the push rod device for controlling 3 initial position of pilot valve.
The overflow-valve device includes the first overflow valve 5a being arranged on the end cap 1 and the second overflow valve 5b, described The oil inlet of first overflow valve 5a passes through the 6th through flow hole 1.1 being arranged in the end cap 1 and communicates with the A hydraulic fluid port 902, Overflow port is communicated by the 7th through flow hole 1.2 with the first elder generation guide cavity 1c;It is equipped in the end cap 1 for being connected to the described 7th 8th through flow hole 1.3 of through flow hole 1.2 and the T hydraulic fluid port 904 is equipped with the first damper 6a in the 8th through flow hole 1.3; The oil inlet of the second overflow valve 5b passes through the 9th through flow hole 1.4 being arranged in the end cap 1 and 903 phase of B hydraulic fluid port Together, overflow port passes through the tenth through flow hole 1.5 being arranged in the end cap 1 and communicates with the second elder generation guide cavity 1d;The end Interior the 11st through flow hole 1.6 being equipped with for being connected to the tenth through flow hole 1.5 and the T hydraulic fluid port 904 of lid 1, the described 11st Second damper 6b is installed in through flow hole 1.6.
The push rod device includes for being plugged in the end cap 1 and being located at 3 left and right ends of pilot valve One push rod 8a and the second push rod 8b.It is separately installed at the both ends of mounting hole 401 for preventing the guide on the main valve plug 4 Spool 3, which is detached from the first screw plug 7a and the second screw plug 7b, the first screw plug 7a of the mounting hole 401, is axially arranged with use along it It is axially arranged with along it for described second on the first spliced eye 701 of the first push rod 8a grafting, the second screw plug 7b Second spliced eye 702 of push rod 8b grafting.
On the side of the pilot valve 3 along its axially be successively arranged from left to right the 4th shoulder 301, the 5th shoulder 302, 6th shoulder 303, the 7th shoulder 304, first through flow hole 4.1 are located at described 4th with 401 connectivity part of mounting hole Between shoulder 301 and the 5th shoulder 302, second through flow hole 4.4 and 401 connectivity part of the mounting hole are located at the described 6th Between shoulder 303 and the 7th shoulder 304, the third through flow hole 4.2 and 401 connectivity part of the mounting hole are located at described the Between five shoulders 302 and the 6th shoulder 303.
The hydraulic end cap 17 is equipped with for being connected to rodless cavity in the A hydraulic fluid port 902 and the hydraulic cylinder 11 Three runners 25;The 4th runner 26 being connected to the B hydraulic fluid port 903, the hydraulic cylinder 11 are additionally provided in the hydraulic end cap 17 It is interior equipped with the 5th runner 27 being connected to the 4th runner 26, be equipped in the link block 14 for being connected to the 5th runner 27 and the hydraulic cylinder 11 in rod chamber the 6th runner 28.
P hydraulic fluid port 901 and T hydraulic fluid port 904 are connected with hydraulic oil source when the hydraulic cement slurry pump work, A hydraulic fluid port 902 and B oil Mouth 903 is connected with the rodless cavity of hydraulic cylinder 11 and rod chamber respectively;Before 901 oil inlet of P hydraulic fluid port, first need to be only pushed manually Push rod 8a or the second push rod 8b makes pilot valve 3 be in an initial position (being equivalent to launch computer), if having pushed Two push rod 8b, then pilot valve 3, which is pulled to, is moved to the left to extreme position, as shown in Fig. 2, then the oil liquid of P hydraulic fluid port 901 is by the Threeway discharge orifice 4.2 (and P hydraulic fluid port communicates always), mounting hole 401, the 4th through flow hole 4.5 enter the first master control chamber 1a, then main valve plug 4 move right (if main valve plug before is not extreme position on the right) or be maintained at the right extreme position (if before The right extreme position), such P hydraulic fluid port 901 leads to A hydraulic fluid port 902, B hydraulic fluid port 903 leads to T hydraulic fluid port 904, the hydraulic work in hydraulic cylinder 11 15 drive piston rod 13 of plug starts to move right, and then the mud piston 16 being located in the mud pump housing 12 is driven to transport to the right It is dynamic, so that the mud in the mud pump housing 12 in rodless cavity is discharged, simultaneously because forming vacuum in rod chamber in the mud pump housing 12 And then mud sucking is waited and is discharged.After the hydraulic piston 15 in hydraulic cylinder 11 moves right to the end, A hydraulic fluid port 902 is pressed When power is increased to the setting pressure of the first overflow valve 5a, oil liquid by A hydraulic fluid port 902, pass through the 6th through flow hole 1.1, the first overflow valve 5a, the 7th through flow hole 1.2 enter the first first guide cavity 1c, and pilot valve 3 is pushed to move right, wherein the oil liquid of the second first guide cavity 1d T hydraulic fluid port 904, the pressure of such P hydraulic fluid port 901 are flowed back to by the tenth through flow hole 1.5, the 11st through flow hole 1.6, the second damper 6b Enter the oil in the second master control chamber 1b, the first master control chamber 1a by third through flow hole 4.2, mounting hole 401, the 5th through flow hole 4.3 Liquid is communicated by the 4th through flow hole 4.5, mounting hole 401, the first through flow hole 4.1 and T hydraulic fluid port 904, and main valve plug 4 is moved to the left switching Lead to B hydraulic fluid port 903 to P hydraulic fluid port 901, A hydraulic fluid port 902 leads to 904 position of T hydraulic fluid port, the hydraulic piston 15 in hydraulic cylinder 11 is with piston Bar 13 starts to move downward, and then the mud piston 16 being located in the mud pump housing 12 is driven to move downward, so that slush pump Mud in body 12 in rod chamber is discharged, simultaneously because forming vacuum in the mud pump housing 12 in rodless cavity and then sucking mud Waiting is discharged.After the hydraulic piston 15 in hydraulic cylinder 11 moves downward to the end, the pressure rise of B hydraulic fluid port 903 to second When the setting pressure of overflow valve 5b, oil liquid passes through the 9th through flow hole 1.4, the second overflow valve 5b, the tenth through flow hole by B hydraulic fluid port 903 1.5 enter the second first guide cavity 1d, and pilot valve 3 is pushed to be moved to the left, and the oil liquid of the first first guide cavity 1c passes through the 7th through flow hole 1.2, the 8th through flow hole 1.3, the first damper 6a flow back to T hydraulic fluid port 904, and the oil liquid of such P hydraulic fluid port 901 passes through third through flow hole 4.2, the oil liquid that mounting hole 401, the 4th through flow hole 4.5 enter the first master control chamber 1a, the second master control chamber 1b passes through the 5th through flow hole 4.3, mounting hole 401, the second through flow hole 4.4 and T hydraulic fluid port 904 communicate, main valve plug 4 move right be switched to P hydraulic fluid port 901 lead to A oil Mouth 902, B hydraulic fluid port 903 lead to 904 position of T hydraulic fluid port, so far form circulation, the hydraulic piston 15 in hydraulic cylinder 11 is in reversal valve The lower mud piston 16 driven in the mud pump housing 12 of control moves back and forth, and sucking and the pump of mud can be realized without automatically controlled control Out.
It is only the preferred embodiment of the present invention described in top, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications Also it should be regarded as protection scope of the present invention.

Claims (5)

1. a kind of piston high-density pump of hydraulic-driven, which is characterized in that including hydraulic cylinder, the mud pump housing, piston rod, and It is arranged between the hydraulic cylinder and the mud pump housing for connecting the connection of the hydraulic cylinder and the mud pump housing Block;The piston rod is slidably connected in the link block, and its left end is located in the hydraulic cylinder, and right end end is located at described In slush pump body;The hydraulic piston being connected with the piston rod left end, the slush pump are slidably connected in the hydraulic cylinder The mud piston being connected with the piston rod right end is slidably connected in vivo;The left end of the hydraulic cylinder is equipped with hydraulic end Lid, the hydraulic end cover the automatic diverter valve for being equipped with and moving back and forth for controlling the hydraulic piston;The mud pump housing Right end is equipped with mud end cap, and the mud end cap is equipped with for controlling the unidirectional valve group that mud passes in and out in the slush pump body Part;The check valve assembly includes for controlling the first check valve and second that mud passes in and out in rodless cavity in the slush pump body Check valve, and for controlling the third check valve and the 4th check valve that mud passes in and out in rod chamber in the slush pump body;Institute State the first runner being equipped in slush pump body for being connected to rod chamber in the third one-way valved outlet and slush pump body, Yi Jiyong In the second flow channel for being connected to rodless cavity in the 4th check valve inlet and slush pump body;
The automatic diverter valve includes the internal valve body for being equipped with P hydraulic fluid port, A hydraulic fluid port, B hydraulic fluid port, T hydraulic fluid port, the left and right two of the valve body End is equipped with end cap, and the main valve plug for control port on-off, the inside edge of the main valve plug are slidably connected in the valve body It is axially arranged with perforative mounting hole, slidably connects pilot valve in the mounting hole;Along it on the side of the main valve plug It is axial to be successively arranged first shoulder, the second shoulder, third shoulder from left to right, it is formed between the first shoulder and the end cap First master control chamber forms the second master control chamber between the third shoulder and the end cap;The left end of the main valve plug and the end The first first guide cavity is formed between lid, and the second first guide cavity is formed between the right end of the main valve plug and the end cap;The main valve plug When positioned at left position, the P hydraulic fluid port is communicated with the B hydraulic fluid port, and the A hydraulic fluid port is communicated with the T hydraulic fluid port;The main valve plug position When location right, the P hydraulic fluid port is communicated with the A hydraulic fluid port, and the B hydraulic fluid port is communicated with the T hydraulic fluid port;The first shoulder Side is equipped with the first through flow hole for being connected to the mounting hole and the T hydraulic fluid port;The side of the third shoulder is equipped with For being connected to the second through flow hole of the mounting hole and the T hydraulic fluid port;The side of second shoulder is equipped with for being connected to State the third through flow hole of mounting hole and the P hydraulic fluid port;It is equipped in the main valve plug for being connected to the first master control chamber and described 4th through flow hole of mounting hole, and the 5th through flow hole for being connected to the second master control chamber and the mounting hole;The elder generation When guide valve core is located at left position, the third through flow hole is communicated with the 4th through flow hole, second through flow hole with it is described 5th through flow hole communicates;When the pilot valve is located at location right, the third through flow hole is communicated with the 5th through flow hole, First through flow hole is communicated with the 4th through flow hole;It is additionally provided on the end cap for controlling the pilot valve movement Overflow-valve device, and the push rod device for controlling the pilot valve initial position;The overflow-valve device includes setting The first overflow valve and the second overflow valve on the end cap, the oil inlet of first overflow valve is by being arranged in the end cap The 6th interior through flow hole is communicated with the A hydraulic fluid port, overflow port pass through the 7th through flow hole that is arranged in the end cap with it is described First first guide cavity communicates;The 8th through flow hole for being connected to the 7th through flow hole and the T hydraulic fluid port, institute are equipped in the end cap It states in the 8th through flow hole and the first damper is installed;The oil inlet of second overflow valve passes through the be arranged in the end cap Nine through flow holes are communicated with the B hydraulic fluid port, and overflow port passes through the tenth through flow hole being arranged in the end cap and described second first Guide cavity communicates;It is equipped with the 11st through flow hole for being connected to the tenth through flow hole and the T hydraulic fluid port in the end cap, described the Second damper is installed in 11 through flow holes.
2. the piston high-density pump of hydraulic-driven according to claim 1, which is characterized in that the push rod device includes inserting Connect in the end cap and be located at the first push rod and the second push rod of the pilot valve left and right ends.
3. the piston high-density pump of hydraulic-driven according to claim 2, which is characterized in that installed on the main valve plug The both ends in hole are separately installed with the first screw plug and the second screw plug for preventing the pilot valve to be detached from the mounting hole, described The first spliced eye for the first push rod grafting is axially arranged with along it on first screw plug, along its axial direction on second screw plug Equipped with the second spliced eye for the second push rod grafting.
4. the piston high-density pump of hydraulic-driven according to claim 3, which is characterized in that the side of the pilot valve On along it be axially successively arranged the 4th shoulder, the 5th shoulder, the 6th shoulder, the 7th shoulder, first through flow hole from left to right With the mounting hole connectivity part between the 4th shoulder and the 5th shoulder, second through flow hole and the installation Hole connectivity part is between the 6th shoulder and the 7th shoulder, the third through flow hole and mounting hole connectivity part position Between the 5th shoulder and the 6th shoulder.
5. the piston high-density pump of hydraulic-driven according to claim 4, which is characterized in that be equipped in the hydraulic end cap For being connected to the third flow channel of rodless cavity in the A hydraulic fluid port and the hydraulic cylinder;It is additionally provided in the hydraulic end cap and the B 4th runner of hydraulic fluid port connection, the hydraulic cylinder is interior to be equipped with the 5th runner being connected to the 4th runner, the link block Interior the 6th runner being equipped with for being connected to rod chamber in the 5th runner and the hydraulic cylinder.
CN201810480340.7A 2018-05-18 2018-05-18 A kind of piston high-density pump of hydraulic-driven CN108691737B (en)

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CN201810480340.7A CN108691737B (en) 2018-05-18 2018-05-18 A kind of piston high-density pump of hydraulic-driven

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Application Number Priority Date Filing Date Title
CN201810480340.7A CN108691737B (en) 2018-05-18 2018-05-18 A kind of piston high-density pump of hydraulic-driven

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CN108691737B true CN108691737B (en) 2019-11-22

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2762674B1 (en) * 1997-04-24 2000-11-03 Caterpillar Inc HYDRAULIC LOAD DETECTION SYSTEM
CN201057181Y (en) * 2007-10-27 2008-05-07 常德信诚液压有限公司 Balancing brake valve
CN201396327Y (en) * 2009-05-07 2010-02-03 刘常芝 Self control positioning two-directional hydraulic reversing valve
CN102537179A (en) * 2012-01-20 2012-07-04 河海大学常州校区 Master control hydraulic damper
CN106523335A (en) * 2016-08-25 2017-03-22 湖南莫尔顿智能勘探机器人有限公司 Automatic reversing water pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2762674B1 (en) * 1997-04-24 2000-11-03 Caterpillar Inc HYDRAULIC LOAD DETECTION SYSTEM
CN201057181Y (en) * 2007-10-27 2008-05-07 常德信诚液压有限公司 Balancing brake valve
CN201396327Y (en) * 2009-05-07 2010-02-03 刘常芝 Self control positioning two-directional hydraulic reversing valve
CN102537179A (en) * 2012-01-20 2012-07-04 河海大学常州校区 Master control hydraulic damper
CN106523335A (en) * 2016-08-25 2017-03-22 湖南莫尔顿智能勘探机器人有限公司 Automatic reversing water pump

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