CN114135461A - Reciprocating liquid-driven high-pressure water pump - Google Patents
Reciprocating liquid-driven high-pressure water pump Download PDFInfo
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- CN114135461A CN114135461A CN202111658535.4A CN202111658535A CN114135461A CN 114135461 A CN114135461 A CN 114135461A CN 202111658535 A CN202111658535 A CN 202111658535A CN 114135461 A CN114135461 A CN 114135461A
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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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/109—Piston 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 plural pumping chambers
- F04B9/111—Piston 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 plural pumping chambers with two mechanically connected pumping members
- F04B9/113—Piston 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 plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting liquid motor
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A reciprocating type liquid-driven high-pressure water pump comprises a pump body, a drainage body and a water inlet body, wherein a water inlet channel and a drainage channel are respectively arranged on the water inlet body and the drainage body; the water inlet channel and the water discharge channel are respectively communicated with the working cavity in the pump body through one-way valves; a reversing valve sleeve is arranged in the working cavity, and the middle part of the working cavity is divided into an oil return cavity, an oil inlet cavity and a transition cavity; two ends of the reversing valve sleeve are respectively connected with a left piston and a right piston; an oil inlet and an oil return port are formed in one side of the pump body; a valve core assembly is arranged in the reversing valve sleeve, and a cavity between the valve core assembly and the right piston is communicated with the oil inlet cavity through a first oil duct; when the reversing valve sleeve and the piston slide to a left dead point, the cavity is communicated with the oil return cavity through a second oil duct; the transition cavity is communicated with the oil return cavity through a third oil duct; when the reversing valve sleeve and the piston slide to a right dead point, the cavity is communicated with the oil inlet cavity through a second oil duct; the transition cavity is communicated with the oil inlet cavity through a fourth oil duct. The water pump has the advantages of compact structure, small volume, large water yield and high working efficiency.
Description
Technical Field
The invention relates to a water pump, in particular to a reciprocating type liquid-driven high-pressure water pump.
Background
The high-pressure plunger pump industry has good development space in domestic markets, but enterprises still occupy larger market shares in high-end product markets and abroad enterprises. The high-pressure water pumps commonly used in domestic host factories are mainly of Finland Dynaset brands, a series of special equipment needs to be arranged, the cost is greatly increased, the technology is restricted, and the development of the high-pressure water pumps of own brands is imperative.
Chinese utility model patent with publication number CN200985867Y discloses a reciprocating two-way water pump that goes out, it includes the cylinder body, arrange the piston in the cylinder body, the connecting rod, the piston divide into cavity and cavity down with the cylinder body, in addition, still include the drainage jar, be equipped with the outlet on the drainage jar, be equipped with water inlet and delivery port on last cavity and the cavity down respectively, be equipped with the check valve corresponding with water inlet and delivery port on water inlet and the delivery port, the drainage jar communicates with last cavity, the delivery port of cavity down, adopt the water pump of such structure, require not high to power input, the water yield is great, moreover, the steam generator is simple in structure, the cost is low and general.
Above-mentioned reciprocating type two-way play water pump of tradition is mostly vertical, though adopted the mode of two-way play water, can improve water efficiency, but its during operation still needs external power device to drive piston reciprocating motion, increased overall dimension and manufacturing cost among the intangible, restricted its volume and mounted position, made this water pump be difficult to the installation on mobile devices such as excavator.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a reciprocating liquid-driven high-pressure water pump which is compact in structure, small in size, large in water yield and high in working efficiency.
The technical scheme of the invention is as follows:
a reciprocating type liquid-driven high-pressure water pump comprises a pump body, wherein a cylindrical working cavity is arranged in the pump body, the upper end surface and the lower end surface of the pump body are respectively connected with a water discharging body 5 and a water inlet body 1, and the water inlet body 1 and the water discharging body 5 are respectively and correspondingly provided with a water inlet channel and a water discharging channel along the longitudinal direction; the upper end face and the lower end face of the two ends of the pump body are respectively provided with a one-way valve in opposite directions, and the water inlet channel and the water discharge channel are respectively communicated with the working cavity through the one-way valves;
a reversing valve sleeve is slidably mounted in the middle of the working cavity through a sealing spacer bush and is used for dividing the middle of the working cavity into an oil return cavity, an oil inlet cavity and a transition cavity which are sequentially arranged; the two ends of the reversing valve sleeve are respectively connected with a left piston and a right piston, and the left piston and the right piston are in sliding fit with the inner wall of the working cavity through sliding seal and are used for forming a left water cavity and a right water cavity at the two ends of the working cavity; an oil inlet and an oil return port which are correspondingly communicated with the oil inlet cavity and the oil return cavity respectively are arranged on one side of the pump body;
a valve core assembly is arranged in the reversing valve sleeve in a sliding fit manner, and a cavity between the valve core assembly and the right piston is communicated with the oil inlet cavity through a first oil duct arranged on the reversing valve sleeve; when the reversing valve sleeve, the left piston and the right piston slide to a left dead point in the working cavity, a cavity between the valve core assembly and the left piston is communicated with the oil return cavity through a second oil duct arranged on the reversing valve sleeve, and the reversing valve sleeve is used for reversing the valve core assembly; the transition cavity is communicated with the oil return cavity through a third oil duct formed by the reversing valve sleeve and the valve core assembly and is used for realizing the reversing of the reversing valve sleeve and the left and right pistons;
when the reversing valve sleeve, the left piston and the right piston slide to a right dead point in the working cavity, a cavity between the valve core assembly and the left piston is communicated with the oil inlet cavity through the second oil duct and is used for reversing the valve core assembly; the transition cavity is communicated with the oil inlet cavity through a fourth oil duct formed by the reversing valve sleeve and the valve core assembly and used for achieving reversing of the reversing valve sleeve, the left piston and the right piston.
Preferably, the pump body is composed of a reversing body and pump covers hermetically connected to two ends of the reversing body, the upper end face and the lower end face of each pump cover are respectively provided with a water drainage hole and a water inlet hole, and the one-way valves are respectively installed in the corresponding water drainage holes and the corresponding water inlet holes.
Preferably, the sliding seals are multiple and are respectively arranged between the left piston and the pump cover inner cavity and between the right piston and the pump cover inner cavity.
Preferably, the sealing spacer is inserted into the reversing body and limited by the open baffle ring.
Preferably, the outer edge of the reversing valve sleeve is in a step shape, the left end of the outer edge of the reversing valve sleeve is in sliding clearance fit with the sealing spacer sleeve, the right end of the outer edge of the reversing valve sleeve is in sliding clearance fit with the inner wall of the reversing body, and a sliding seal is arranged between the outer edge of the reversing valve sleeve and the sealing spacer sleeve.
Preferably, the first oil passage is composed of an annular groove formed in the middle of the outer edge of the reversing valve sleeve and a plurality of radial long holes uniformly distributed in the annular groove along the circumferential direction.
Preferably, the second oil passage is composed of an annular groove arranged on the outer edge of the reversing valve sleeve and close to the left end, and a plurality of radial small holes uniformly distributed in the annular groove along the circumferential direction.
Preferably, the third oil passage is formed by sequentially communicating a trapezoidal groove formed in the right end of the reversing valve sleeve, a first axial hole uniformly distributed in the right end of the reversing valve sleeve on the circumference, a first ring groove formed in the middle of the reversing valve sleeve, an inner hole of the reversing valve sleeve, a second ring groove formed in the middle of the reversing valve sleeve, a second axial hole uniformly distributed in the left end of the reversing valve sleeve on the circumference and the trapezoidal groove formed in the left end of the reversing valve sleeve.
Preferably, the fourth oil duct is formed by sequentially communicating a first oil duct, a third ring groove formed in the middle of the reversing valve sleeve, an inner hole of the reversing valve sleeve, a first ring groove formed in the middle of the reversing valve sleeve, first axial holes uniformly distributed in the right end of the reversing valve sleeve on the circumference and a trapezoidal groove formed in the right end of the reversing valve sleeve.
As a further preference, when the reversing valve sleeve, the left piston and the right piston slide to a left dead point in the working cavity, the valve core assembly is clamped at the step of the inner hole of the reversing valve sleeve after reversing, so that the third oil passage can be switched on, and the fourth oil passage is switched off; when the reversing valve sleeve, the left piston and the right piston slide to a right dead point in the working cavity, the valve core assembly is clamped at the step of the inner hole of the reversing valve sleeve after reversing, the third oil duct can be disconnected, and the fourth oil duct is connected; so as to be convenient for reversing the reversing valve sleeve and the left and right pistons.
Preferably, the valve core assembly is composed of a hollow reversing valve core and a valve core nut, and the reversing valve core and the valve core nut are inserted from two ends of an inner hole of the reversing valve sleeve and are connected with each other through threads.
Preferably, a guide plug is fixed at the center of the right end of the left piston, a large hole at the left end of the reversing valve core is sleeved on the outer edge of the guide plug in a sliding clearance fit manner, and a sliding seal is arranged between the large hole and the guide plug and used for ensuring the coaxiality of the valve core assembly during installation.
The invention has the beneficial effects that:
1. the reciprocating type liquid-driven high-pressure water pump is compact in structure, all moving parts are integrated in one pump body, the overall dimension can reach 324mmX158mmX235mm, the overall size is small, and the installation is convenient.
2. Pressure oil is pumped into the pump body to drive the reversing valve sleeve to drive the left piston and the right piston to reciprocate, so that the left water cavity and the right water cavity at two ends of the working cavity alternately form a vacuum pumping state, and liquid is sucked in a reciprocating manner; and the liquid sucked before is discharged while the liquid reversely moves, the water yield is high, the liquid flow can be controlled by the oil supply flow, the maximum flow can reach 150L/min, the highest pressure of the discharged water is 9Mpa, the lift can reach 90 meters, and the working efficiency is high. The application range is wide, and the device is not only suitable for mounting of a mobile vehicle, but also suitable for factory mounting, and is particularly suitable for mounting on an excavator, mining equipment, a tractor and a caravan.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a sectional view B-B of fig. 1.
Fig. 5 is a schematic structural diagram of the reversing valve sleeve and the left and right pistons when moving to a left dead center.
Fig. 6 is a schematic structural diagram of the reversing valve sleeve and the left and right pistons when moving to the right dead center.
Fig. 7 is a side view of the reversing valve sleeve of fig. 3.
Fig. 8 is a cross-sectional view C-C of fig. 7.
In the figure: the water inlet structure comprises a water inlet body 1, a water inlet channel 101, a sealing plug 2, a bolt 3, a pump cover 4, a water draining body 5, a water draining channel 501, a reversing body 6, a water inlet body 7, an oil inlet hole 701, an oil return hole 702, a working cavity 8, a sliding seal 9, a guide sealing ring 10, a screw 11, a water inlet one-way valve 12, a left piston 13, a water draining one-way valve 14, a guide plug 15, a sealing spacer sleeve 16, an opening baffle ring 17, a reversing valve sleeve 18, a reversing valve core 19, a valve core nut 20, a sliding seal 21, a right piston 22, a sliding seal 23, a first oil channel 24, a second oil channel 25, a third oil channel 26 and a fourth oil channel 27.
The annular groove 1801, the radial slot 1802, the annular groove 1803, the radial small hole 1804, the trapezoidal groove 1805, the first axial hole 1806, the first annular groove 1807, the second annular groove 1808, the second axial hole 1809, the trapezoidal groove 1810, and the third annular groove 1811.
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.
As shown in fig. 1 to 6, the reciprocating type liquid-driven high-pressure water pump according to the present invention comprises a pump body, a cylindrical working chamber 8 is provided in the pump body, a water discharging body 5 and a water inlet body 1 are fixedly connected to the upper and lower end surfaces of the pump body through screws, a water inlet passage 101 and a water discharging passage 501 are provided on the water inlet body 1 and the water discharging body 5 along the longitudinal direction thereof, and the water inlet passage 101 and the water discharging passage 501 are vertically connected by a long hole and connecting holes provided at both ends of the long hole; and one ends of the long holes of the water inlet channel and the water discharge channel are respectively provided with a sealing plug 2. The upper end face and the lower end face of the two ends of the pump body are respectively provided with a one-way valve in opposite directions, and the water inlet channel 101 and the water outlet channel 501 are respectively communicated with the two ends of the working cavity 8 through the one-way valves.
The pump body comprises a reversing body 6 and pump covers 4 which are connected with two ends of the reversing body 6 in a sealing mode through bolts 3, drain holes and water inlet holes are formed in the upper end face and the lower end face of each pump cover 4 respectively, the one-way valves are divided into drain one-way valves 14 and water inlet one-way valves 12 which are inserted into the corresponding drain holes and the corresponding water inlet holes respectively, the water inlet one-way valves 12 located in the water inlet holes only enable liquid in the water inlet channels to flow into left water cavities and right water cavities at two ends of the working cavity 8, and the drain one-way valves 14 located in the drain holes only enable liquid in the left water cavities and the right water cavities at two ends of the working cavity 8 to enter the drain channels to be discharged.
A reversing valve sleeve 18 is slidably mounted in the middle of the working cavity 8, namely the reversing body 6, through a sealing spacer 16, and is used for dividing the middle of the working cavity 8 into an oil return cavity 801, an oil inlet cavity 802 and a transition cavity 803 which are sequentially arranged and can change in size at any time; the sealing spacer is inserted in the reversing body 6 and limited by an opening baffle ring 17. The outer edge of the reversing valve sleeve 18 is in a step shape, the left end of the outer edge of the reversing valve sleeve is in sliding clearance fit with the sealing spacer sleeve, the right end of the outer edge of the reversing valve sleeve is in sliding clearance fit with the inner wall of the reversing body 6, and a sliding seal 21 is arranged between the outer edge of the reversing valve sleeve and the sealing spacer sleeve.
The two ends of the reversing valve sleeve 18 are respectively connected with a left piston 13 and a right piston 22 through threads, and the left piston and the right piston are in sliding fit with the inner wall of the working cavity 8 through a sliding seal 23 and are used for forming a left water cavity and a right water cavity at the two ends of the working cavity 8; the sliding seals 23 are uniformly distributed between the left piston and the right piston and between the inner cavities of the pump cover 4, and the sliding seals 21 and 23 are GREEN rings.
An oil inlet 601 and an oil return port 602 are arranged in parallel on one side of the front face of the reversing body 6 of the pump body, and the oil inlet and the oil return port are correspondingly communicated with the oil inlet cavity 802 and the oil return cavity 801 respectively. An oil inlet body 7 is fixedly connected in front of the reversing body 6 through a bolt, an oil inlet hole 701 and an oil return hole 702 are formed in the oil inlet body 7, and the oil inlet hole and the oil return hole are correspondingly communicated with an oil inlet and an oil return port respectively.
The reversing valve sleeve 18 is internally provided with a valve core assembly in a sliding fit manner, the valve core assembly is formed by connecting a hollow reversing valve core 19 and a valve core nut 20, the outer edge and the inner hole of the reversing valve core 19 are in a step shape, and the outer edge and the inner hole of the reversing valve core 19 and the valve core nut 20 are respectively inserted from two ends of the inner hole of the reversing valve sleeve 18 and are mutually connected through threads. The guide sealing ring 10 is embedded in the inner hole of the reversing valve sleeve 18 corresponding to the reversing valve core 19.
The cavity between the valve core assembly and the right piston 22 is communicated with the oil inlet cavity 802 through a first oil passage 24 arranged on the reversing valve sleeve 18; when the reversing valve sleeve 18 and the left and right pistons slide to a left dead point in the working chamber 8, a cavity between the valve core assembly and the left piston 13 is communicated with the oil return chamber 801 through a second oil passage 25 arranged on the reversing valve sleeve 18, so as to realize the reversing of the valve core assembly; the transition cavity 803 is communicated with the oil return cavity 801 through a third oil duct 26 formed by the reversing valve sleeve 18 and the valve core assembly, and is used for realizing the reversing of the reversing valve sleeve 18 and the left and right pistons.
When the reversing valve sleeve 18 and the left and right pistons slide to the right dead center in the working chamber 8, the cavity between the valve core assembly and the left piston 13 is communicated with the oil inlet chamber 802 through the second oil passage 25, so as to realize the reversing of the valve core assembly; the transition cavity 803 is communicated with the oil inlet cavity 802 through a fourth oil passage 27 formed by the reversing valve sleeve 18 and the valve core assembly, and is used for realizing the reversing of the reversing valve sleeve 18 and the left and right pistons.
As shown in fig. 7-8, the first oil passage 24 is formed by communicating and combining an annular groove 1801 formed in the middle of the outer edge of the reversing valve sleeve 18 and a plurality of radial long holes 1802 uniformly distributed in the annular groove 1801 along the circumferential direction. The second oil passage 25 is formed by communicating and combining an annular groove 1803 which is arranged at the outer edge of the reversing valve sleeve 18 and is close to the left end with a plurality of radial small holes 1804 which are uniformly distributed in the annular groove 1803 along the circumferential direction.
The third oil passage 26 is formed by sequentially communicating a trapezoidal groove 1805 formed at the right end of the reversing valve sleeve 18, first axial holes 1806 uniformly distributed at the right end of the reversing valve sleeve 18 on the circumference, a first annular groove 1807 formed at the middle part in the reversing valve sleeve 18, an inner hole of the reversing valve sleeve 18, a second annular groove 1808 formed at the middle part in the reversing valve sleeve 18, second axial holes 1809 uniformly distributed at the left end of the reversing valve sleeve 18 on the circumference and a trapezoidal groove 1810 formed at the left end of the reversing valve sleeve 18.
The fourth oil passage 27 is formed by sequentially communicating a first oil passage 24, a third ring groove 1811 formed in the middle of the interior of the reversing valve sleeve 18, an inner hole of the reversing valve sleeve 18, a first ring groove 1807 formed in the middle of the interior of the reversing valve sleeve 18, first axial holes 1806 uniformly distributed on the right end of the reversing valve sleeve 18 in the circumferential direction, and a trapezoidal groove 1805 formed in the right end of the reversing valve sleeve 18.
When the reversing valve sleeve 18 and the left and right pistons slide to a left dead point in the working chamber 8, the valve core assembly is clamped at the inner hole step of the reversing valve sleeve 18 after reversing, so that the third oil passage 26 can be connected, and the fourth oil passage 27 is disconnected; when the reversing valve sleeve 18 and the left and right pistons slide to the right dead point in the working chamber 8, the valve core assembly is clamped at the inner hole step of the reversing valve sleeve 18 after reversing, the third oil passage 26 can be disconnected, and the fourth oil passage 27 is communicated; to facilitate the reversal of the reversing valve sleeve 18 and the left and right pistons.
A guide plug 15 is fixed at the center of the right end of the left piston 13 through a screw 11, a large hole at the left end of the reversing valve core 19 is sleeved on the outer edge of the guide plug 15 through sliding clearance fit, and a sliding seal 9 is arranged between the large hole and the guide plug for ensuring the coaxiality of the valve core assembly during installation.
When the water pump is used, the water pump is connected with an oil pump and an oil tank through an oil inlet hole and an oil return hole respectively, is connected with a water source through a water inlet channel inlet, and is connected with a spray head through a water drainage channel outlet. When the device works, an oil pump is started, pressure oil enters an oil inlet cavity 802 through an oil inlet hole, the direction-changing valve sleeve 18 and the left and right pistons are pushed to move towards the right side under the action of pressure, the oil in the transition cavity 803 is unloaded through the third oil duct 26, the oil return cavity 801 and the oil return hole in sequence, at the moment, a vacuumizing state is formed in the left water cavity, the water inlet one-way valve 12 corresponding to the left water cavity is opened, and an aqueous medium is pumped into the left water cavity;
as shown in fig. 6, after the reversing valve sleeve 18 moves to the right dead point together with the left and right pistons, because the cavity between the valve core assembly and the left piston 13 is communicated with the oil inlet cavity 802 through the second oil passage 25, the pressure oil enters the cavity between the valve core assembly and the left piston 13 through the second oil passage 25, and pushes the valve core assembly to move rightwards, so that the third oil passage 26 is disconnected, and the fourth oil passage 27 is connected; at this time, the pressure oil in the oil inlet cavity 802 flows into the transition cavity 803 through the fourth oil passage 27, the reversing valve sleeve 18 and the left and right pistons are pushed to move leftwards, the water medium in the left water cavity is pushed by the left piston 13, the drainage check valve 14 corresponding to the left water cavity is opened, and water is drained through the drainage channel; when the reversing valve sleeve 18 moves leftwards, the right water cavity is simultaneously vacuumized to synchronously absorb water.
As shown in fig. 5, when the reversing valve sleeve 18 moves to a left dead center together with the left and right pistons, since the cavity between the valve core assembly and the left piston 13 is communicated with the oil return cavity 801 through the second oil passage 25, the oil previously entering between the valve core assembly and the left piston 13 is unloaded, the pressure oil entering the oil inlet cavity 802 enters the cavity between the valve core assembly and the right piston 22 through the first oil passage 24, the valve core assembly is pushed to move left, the third oil passage 26 is conducted, the fourth oil passage 27 is disconnected, and the oil entering the transition cavity 803 can be unloaded through the third oil passage 26; at this time, the pressure oil in the oil inlet chamber 802 can push the reversing valve sleeve 18 and the left and right pistons to move to the right in a reversing manner, thereby completing a working cycle. The continuous operation of the water pump can be realized by reciprocating in this way.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (12)
1. The utility model provides a reciprocating type liquid drives high-pressure water pump, includes the pump body, is equipped with a working chamber in the pump body, characterized by: the upper end surface and the lower end surface of the pump body are respectively connected with a water discharging body and a water inlet body, and the water inlet body and the water discharging body are respectively and correspondingly provided with a water inlet channel and a water discharging channel; the upper end face and the lower end face of the two ends of the pump body are respectively provided with a one-way valve in opposite directions, and the water inlet channel and the water discharge channel are respectively communicated with the working cavity through the one-way valves;
a reversing valve sleeve is slidably mounted in the middle of the working cavity through a sealing spacer bush and is used for dividing the middle of the working cavity into an oil return cavity, an oil inlet cavity and a transition cavity which are sequentially arranged; the two ends of the reversing valve sleeve are respectively connected with a left piston and a right piston, and the left piston and the right piston are in sliding fit with the inner wall of the working cavity through sliding seal and are used for forming a left water cavity and a right water cavity at the two ends of the working cavity; an oil inlet and an oil return port which are correspondingly communicated with the oil inlet cavity and the oil return cavity respectively are arranged on one side of the pump body;
a valve core assembly is arranged in the reversing valve sleeve in a sliding fit manner, and a cavity between the valve core assembly and the right piston is communicated with the oil inlet cavity through a first oil duct arranged on the reversing valve sleeve; when the reversing valve sleeve, the left piston and the right piston slide to a left dead point in the working cavity, a cavity between the valve core assembly and the left piston is communicated with the oil return cavity through a second oil duct arranged on the reversing valve sleeve, and the reversing valve sleeve is used for reversing the valve core assembly; the transition cavity is communicated with the oil return cavity through a third oil duct formed by the reversing valve sleeve and the valve core assembly and is used for realizing the reversing of the reversing valve sleeve and the left and right pistons;
when the reversing valve sleeve, the left piston and the right piston slide to a right dead point in the working cavity, a cavity between the valve core assembly and the left piston is communicated with the oil inlet cavity through the second oil duct and is used for reversing the valve core assembly; the transition cavity is communicated with the oil inlet cavity through a fourth oil duct formed by the reversing valve sleeve and the valve core assembly and used for achieving reversing of the reversing valve sleeve, the left piston and the right piston.
2. The reciprocating fluid-driven high-pressure water pump according to claim 1, characterized in that: the pump body is composed of a reversing body and pump covers which are connected to two ends of the reversing body in a sealing mode, drain holes and water inlet holes are formed in the upper end face and the lower end face of each pump cover respectively, and the check valves are installed in the corresponding drain holes and the corresponding water inlet holes respectively.
3. The reciprocating fluid-driven high-pressure water pump according to claim 2, characterized in that: the sliding seals are multiple and are respectively arranged between the left piston and the pump cover inner cavity and between the right piston and the pump cover inner cavity.
4. The reciprocating fluid-driven high-pressure water pump according to claim 2, characterized in that: the sealing spacer bush is inserted in the reversing body and limited by the opening baffle ring.
5. The reciprocating fluid-driven high-pressure water pump according to claim 2, characterized in that: the outer edge of the reversing valve sleeve is in a step shape, the left end of the outer edge of the reversing valve sleeve is in sliding clearance fit with the sealing spacer sleeve, the right end of the outer edge of the reversing valve sleeve is in sliding clearance fit with the inner wall of the reversing body, and sliding sealing is arranged between the outer edge of the reversing valve sleeve and the inner wall of the reversing body.
6. The reciprocating fluid-driven high-pressure water pump according to claim 1, characterized in that: the first oil channel consists of an annular groove arranged in the middle of the outer edge of the reversing valve sleeve and a plurality of radial long holes uniformly distributed in the annular groove along the circumferential direction.
7. The reciprocating liquid-driven high-pressure water pump according to claim 1 or 6, characterized in that: the second oil duct is composed of an annular groove arranged on the outer edge of the reversing valve sleeve and close to the left end and a plurality of radial small holes uniformly distributed in the annular groove along the circumferential direction.
8. The reciprocating fluid driven high pressure water pump of claim 7, wherein: the third oil duct is formed by sequentially communicating a trapezoidal groove arranged at the right end of the reversing valve sleeve, a first axial hole uniformly distributed at the right end of the reversing valve sleeve, a first annular groove arranged at the middle part in the reversing valve sleeve, a reversing valve sleeve inner hole, a second annular groove arranged at the middle part in the reversing valve sleeve, a second axial hole uniformly distributed at the left end of the reversing valve sleeve and the trapezoidal groove arranged at the left end of the reversing valve sleeve.
9. The reciprocating fluid driven high pressure water pump of claim 8, wherein: the fourth oil duct is formed by sequentially communicating a first oil duct, a third ring groove formed in the middle of the reversing valve sleeve, an inner hole of the reversing valve sleeve, a first ring groove formed in the middle of the reversing valve sleeve, first axial holes circumferentially and uniformly distributed in the right end of the reversing valve sleeve and a trapezoidal groove formed in the right end of the reversing valve sleeve.
10. The reciprocating liquid-driven high-pressure water pump according to claim 1 or 9, characterized in that: when the reversing valve sleeve, the left piston and the right piston slide to a left dead point in the working cavity, the valve core assembly is clamped at the step of the inner hole of the reversing valve sleeve after reversing, the third oil duct can be switched on, and the fourth oil duct is switched off; when the reversing valve sleeve, the left piston and the right piston slide to a right dead point in the working cavity, the valve core assembly is clamped at the step of the inner hole of the reversing valve sleeve after reversing, the third oil duct can be disconnected, and the fourth oil duct is connected; so as to be convenient for reversing the reversing valve sleeve and the left and right pistons.
11. The reciprocating fluid driven high pressure water pump of claim 10, wherein: the valve core assembly consists of a hollow reversing valve core and a valve core nut, and the reversing valve core and the valve core nut are inserted from two ends of an inner hole of the reversing valve sleeve and are connected with each other through threads.
12. The reciprocating fluid-driven high pressure water pump of claim 11, wherein: a guide plug is fixed at the center of the right end of the left piston, a large hole at the left end of the reversing valve core is sleeved on the outer edge of the guide plug in a sliding clearance fit mode, and a sliding seal is arranged between the large hole and the guide plug and used for ensuring the coaxiality of the valve core assembly during installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111658535.4A CN114135461A (en) | 2021-12-30 | 2021-12-30 | Reciprocating liquid-driven high-pressure water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111658535.4A CN114135461A (en) | 2021-12-30 | 2021-12-30 | Reciprocating liquid-driven high-pressure water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114135461A true CN114135461A (en) | 2022-03-04 |
Family
ID=80383908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111658535.4A Pending CN114135461A (en) | 2021-12-30 | 2021-12-30 | Reciprocating liquid-driven high-pressure water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114135461A (en) |
-
2021
- 2021-12-30 CN CN202111658535.4A patent/CN114135461A/en active Pending
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