CN118030437A - Swash plate and valve flow distribution miniature plunger pump - Google Patents

Swash plate and valve flow distribution miniature plunger pump Download PDF

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Publication number
CN118030437A
CN118030437A CN202410096595.9A CN202410096595A CN118030437A CN 118030437 A CN118030437 A CN 118030437A CN 202410096595 A CN202410096595 A CN 202410096595A CN 118030437 A CN118030437 A CN 118030437A
Authority
CN
China
Prior art keywords
plunger
hole
swash plate
valve
plunger pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410096595.9A
Other languages
Chinese (zh)
Inventor
杨毅博
陈经跃
黄玖琦
蔡金典
任鹏
李奕宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Flight Automatic Control Research Institute of AVIC
Original Assignee
Xian Flight Automatic Control Research Institute of AVIC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Flight Automatic Control Research Institute of AVIC filed Critical Xian Flight Automatic Control Research Institute of AVIC
Priority to CN202410096595.9A priority Critical patent/CN118030437A/en
Publication of CN118030437A publication Critical patent/CN118030437A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/143—Cylinders
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/146—Swash plates; Actuating elements
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/16—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having two or more sets of cylinders or pistons
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/18—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having self-acting distribution members, i.e. actuated by working fluid

Landscapes

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

Abstract

The invention provides a swash plate and valve flow distribution miniature plunger pump, comprising: a drive shaft having a slotted swash plate; a slipper in contact with the swash plate; a through-hole plunger in contact with the shoe; a cylinder body in clearance fit with the through hole plunger; the central spherical hinge is arranged on the cylinder body; one end of the return spring is abutted against the cylinder body, and the other end is abutted against the central spherical hinge; one end of the return disc is contacted with the central spherical hinge, and the other end is contacted with the through hole plunger through the plunger gasket; a flow distribution valve seat in contact with the cylinder; the flat valve core is arranged on the flow distribution valve seat; and one end of the valve core spring 9 is abutted against the flow distribution valve seat, and the other end is abutted against the flat valve core. The swash plate and valve flow distribution miniature plunger pump provided by the invention discharges oil through the slotted swash plate oil suction and flat plate flow distribution valve, outputs flow and pressure, and has the characteristics of simple processing, strong pollution resistance and high efficiency.

Description

Swash plate and valve flow distribution miniature plunger pump
Technical Field
The invention belongs to the plunger pump technology, and particularly relates to a swash plate and valve flow distribution miniature plunger pump.
Background
Along with the development of modern industry, the plunger pump of a key power element in a hydraulic system is developed towards miniaturization and high pressure, and the miniature hydraulic pump has the advantages of light weight, small size, high pressure, high power density, strong environmental adaptability and the like, and is widely applied to the fields of petroleum exploration, small EHA systems, robots and the like.
The traditional miniature plunger pump plunger component adopts roll package processing, and the technology is complicated, and manufacturing cost is high, and main shaft, sloping cam plate part are many and the structure is complicated, and the reliability is poor.
Disclosure of Invention
The invention provides a swash plate and valve flow distribution miniature plunger pump which has the functions of output flow and pressure and can work in a high-temperature environment; the plug-in type structure is adopted, so that the maintenance and the use are convenient.
The invention provides a swash plate and valve flow distribution miniature plunger pump, which comprises: the valve comprises a shell 1, a driving shaft 2, a sliding shoe 3, a return disc 5, a through hole plunger 6, a flat valve core 8, a valve core spring 9, a center ball winch 10, a center spring 11, a cylinder 13 and a distributing valve seat 14; wherein,
The middle position of the shell 1 is provided with oil inlets uniformly distributed on the circumference;
The driving shaft 2, the cylinder body 13 and the distributing valve seat 14 are sequentially sleeved in the shell 1, one end of the driving shaft 2 is connected with the plunger pump, the other end of the driving shaft is provided with a sloping cam plate, and the end face of the sloping cam plate is provided with N oil absorption grooves; n is an integer greater than 1;
the center of the cylinder body 13 is provided with a central concave hole, N cylinder holes are formed around the central concave hole, a central spring 11 is arranged in the central concave hole, and a through hole plunger 6 is arranged in the cylinder holes;
One end of each through hole plunger 6 is a spherical plunger head, and the other end is a plunger rod; the plunger rod is in clearance fit with a cylinder hole on the cylinder body 13, the spherical plunger head passes through the return disc 5 to connect the sliding shoe 3, and the sliding shoe 3 is abutted against the end face of the swash plate; the sliding shoe 3 and the through hole plunger 6 are respectively provided with a through hole;
One end of the central ball winch 10 is a concave spherical surface, and the other end is contacted with the central spring 11;
one surface of the return disc 5, which is far away from the sloping cam plate, is a convex spherical surface and is in contact fit with the concave spherical surface of the central spherical winch 10;
The center of the distributing valve seat 14 is provided with an oil outlet, N flat valve holes are arranged around the oil outlet, and each flat valve hole is communicated with the oil outlet; each flat valve hole is correspondingly communicated with each cylinder hole of the cylinder body 13;
A valve core spring 9 is arranged in the flat valve hole, and the flat valve core 8 is arranged between the cylinder 13 and the valve core spring 9;
When the driving shaft 2 rotates, the swash plate rotates to drive the through hole plunger 6 to reciprocate, when one through hole plunger 6 moves linearly towards the swash plate, the sliding shoe 3 corresponding to the through hole plunger 6 is communicated with the oil suction groove, oil flows through the through hole plunger 6 from the swash plate oil suction groove to enter the cylinder hole, the oil suction process is carried out, and at the moment, the flat valve core 8 closes the passage between the flat valve hole and the oil outlet hole under the action of the elasticity of the valve core spring 9; when the swash plate rotates to disconnect the sliding shoe 3 corresponding to the through hole plunger 6 from the oil suction groove, the through hole plunger 6 is pushed to squeeze the corresponding flat valve core 8, so that the flat valve core 8 moves to communicate the passage of the flat valve hole and the oil outlet hole, and the process is a pressure oil process.
Optionally, N has a value of 3.
Optionally, the outer side of the flat valve core 8 is spherical;
An annular sealing belt is arranged on the flat valve core 8.
Optionally, the swash plate and valve flow distribution miniature plunger pump further comprises: a plunger gasket 4, the plunger gasket 4 being disposed between the spherical plunger head and the return disc 5;
The side of the plunger gasket 4 facing the spherical plunger head is a concave spherical surface.
Optionally, the swash plate and valve flow distribution miniature plunger pump further comprises: a retainer ring 12;
a first annular step is arranged in the shell 1, and the driving shaft 2 and the cylinder 13 are positioned at two sides of the first annular step;
The retainer ring 12 is arranged between the cylinder 13 and the first annular step.
Optionally, the swash plate and valve flow distribution miniature plunger pump further comprises: a seal ring 7;
a sealing ring 7 is arranged between the cylinder 13 and the housing 1.
Optionally, a second annular step is arranged in the shell 1;
The driving shaft 2 is sleeved in the shell 1 through two deep groove ball bearings and a thrust ball bearing;
The two deep groove ball bearings and one thrust ball bearing are sleeved on the driving shaft 2, and the thrust ball bearing is arranged between the two deep groove ball bearings;
and the end face of the deep groove ball bearing far away from one side of the swash plate is attached to the second annular step.
Optionally, the swash plate and valve flow distribution miniature plunger pump further comprises: a plug 15;
The plug 15 is sleeved on one end of the distributing valve seat 14 far away from the cylinder body 13, and the plug 15 is in threaded connection with the shell 1.
Alternatively, the drive shaft 2 and the swash plate are of an integral structure.
Optionally, the center of the return tray 5 is provided with a center hole.
The invention provides a swash plate and valve flow distribution miniature plunger pump, which comprises: the valve comprises a shell 1, a driving shaft 2, a sliding shoe 3, a return disc 5, a through hole plunger 6, a flat valve core 8, a valve core spring 9, a center ball winch 10, a center spring 11, a cylinder 13 and a distributing valve seat 14; compared with the traditional plunger piston shoe structure adopting the rolling process, the through hole plunger piston and piston shoe abutting structure form adopted by the invention can effectively avoid the functional failure of the miniature plunger pump caused by the pulling-off of the plunger piston shoe. Compared with the rolling bag structure, the structure has the advantages of simple processing technology, easy production and flexible rotation. Compared with a flow distribution structure of a flow distribution plate, the invention adopts a flow distribution structure form of a sloping cam plate and a flat valve, effectively avoids the problems of increased internal leakage, increased abrasion, reduced efficiency and the like of the miniature plunger pump caused by overturning a cylinder body, greatly improves the efficiency, reliability and service life of the miniature plunger pump. The invention adopts the valve to discharge oil, thereby improving the working pressure. Compared with a cylinder body rotary driving structure, the invention adopts a main shaft rotary driving structure form, effectively avoids the problems of low efficiency and the like of the miniature plunger pump caused by oil stirring of a cylinder body rotor assembly, and improves the working efficiency of the miniature plunger pump. Compared with the cylinder body rotation driving, the structure has less parts, low production cost and high reliability.
Drawings
FIG. 1 is a schematic diagram of a swash plate and valve flow distribution micro plunger pump provided by the invention;
FIG. 2 is a schematic view of a drive shaft;
FIG. 3 is a schematic view of a flat spool;
reference numerals illustrate:
1-a housing; 2-driving shaft; 3-skid shoes; 4-plunger gaskets; 5-a return tray; 6-a through hole plunger; 7-a sealing ring; 8-a flat valve core; 9-a valve core spring; 10-center ball twisting; 11-a center spring; 12-check ring; 13-a cylinder; 14-a distributing valve seat; 15-plugging.
Detailed Description
The micro plunger pump with swash plate and valve flow distribution provided by the invention is explained below with reference to the attached drawings.
Referring to fig. 1, the present application provides a micro plunger pump with swash plate and valve flow distribution, comprising: the valve comprises a shell 1, a driving shaft 2, a sliding shoe 3, a plunger gasket 4, a return disc 5, a through hole plunger 6, a sealing ring 7, a flat valve core 8, a valve core spring 9, a center ball winch 10, a center spring 11, a retainer ring 12, a cylinder body 13, a distributing valve seat 14 and a plug 15.
The shell 1, the intermediate position of shell 1 is equipped with oil inlets (not shown in the figure) that circumference equipartition was put.
The driving shaft 2 is arranged in the shell 1, and the driving shaft 2 is arranged on one side of the shell 1 through two deep groove ball bearings and a thrust ball bearing.
As shown in fig. 2, the drive shaft 2 has a swash plate which is in contact engagement with the shoes 3, and an oil suction groove is provided on one side of the swash plate end face. The shape of the oil suction groove is overlapped with the motion track of the oil suction hole arranged on the sliding shoe 3 at one side of the sloping cam plate.
The driving shaft and the sloping cam plate adopt an integral structure, and the oil suction groove realizes that oil is sucked into the sliding shoe 3.
The other side of the shell 1 is provided with a plug 15, and one side of the plug 15 is sequentially provided with a distributing valve seat 14 and a cylinder body 13.
The cylinder block 13 is provided with 3 cylinder bores. Each of the 3 cylinder bores has a through-hole plunger 6.
The through hole plunger 6 comprises a spherical plunger head and a plunger rod connected with the spherical plunger head, one end of the through hole plunger 6 is in contact with the sliding shoe 3, one end of the through hole plunger 6 is in clearance fit with a cylinder hole of the cylinder body 13, and the through hole plunger 6 is provided with a through hole.
And a plunger gasket 4, one end of which is contacted with the through hole plunger 6 and the other end of which is contacted with the return disc 5.
A convex spherical surface and a central hole are arranged on one side of the return disc 5 and are used for being in contact fit with a concave spherical surface arranged on the central spherical winch 10; the center hole communicates oil to the spherical surface matching surface to provide lubrication.
A central ball winch 10, one end of which is contacted with the return tray 5. One side of the central ball winch 10 is abutted against the central spring 11 arranged on the cylinder 13, and the other side is in contact fit with the return disc 5.
The center spring 11 is arranged in the cylinder 13, one end of the center spring 11 is abutted against the cylinder 13, the other end is abutted against the center ball winch 10, the spring force of the center spring 11 is transmitted to the through hole plunger 6 through the center ball winch 10, the return disc 5 and the plunger gasket 4, and the return force is provided for reciprocating motion of the plunger.
An oil outlet is arranged in the distributing valve seat 14, and the flat valve core 8 is arranged on the distributing valve seat 14.
Illustratively, the center of the distributing valve seat 14 is provided with an oil outlet, 3 plate valve holes are arranged around the oil outlet, and each plate valve hole is communicated with the oil outlet; each flat valve hole is correspondingly communicated with each cylinder hole of the cylinder body 13;
the flat valve core 8 is arranged in a flat valve hole of the distributing valve seat 14.
The flat valve core 8 is a sphere with truncated two sides, one end of the sphere is concavely arranged, the other end of the sphere is convexly arranged, the concave side corresponds to a cylinder hole arranged on the communicated cylinder 13, and the valve core spring 9 is sleeved on the convex end of the flat valve core 8, as shown in fig. 3. When the flat valve core 8 is pressed by the spring force to be attached to the cylinder 13, the outer ring of the flat valve core 8 serves as an annular sealing band to disconnect the oil outlet from each flat valve hole.
The valve core spring 9 is arranged in the distributing valve seat 14, one side of the valve core spring is abutted against the distributing valve seat 14, and the other side of the valve core spring is abutted against the flat valve core 8.
One side of the flat valve core 8 is limited by a cylinder 13.
The annular sealing band of the flat valve core 8 is used for sealing oil when the flat valve core 8 is closed. The outer side of the flat valve core 8 is spherical, and the valve core is prevented from being blocked with the distributing valve seat 14 when moving.
Optionally, the housing 1 has a first step therein; the first step is used to set the cylinder 13.
A distributing valve seat 14 is in contact with the cylinder 13.
Optionally, a plug 15 is sleeved on the distributing valve seat, the plug 15 is in threaded connection with the shell 1, and the plug 15 is used for providing a pressing force for the distributing valve seat 14 and the cylinder body 13.
Optionally, a retainer ring 12 is disposed between the cylinder 13 and the first step, and the retainer ring 12 is used for adjusting the installation position of the through hole plunger 6.
The return disc 5 is provided with a convex spherical surface and a central hole, and the convex spherical surface is in contact fit with a concave spherical surface arranged on the central spherical hinge 10. The central hole is used for guiding oil to enter the spherical surface for the spherical lubrication.
Optionally, a sealing ring 7 is disposed between the cylinder 13 and the housing 1, and is used for preventing oil from leaking, and simultaneously providing friction force for the cylinder 3, so as to prevent the cylinder 3 from rotating to cause the failure of the plunger pump.
Optionally, the cylinder hole is correspondingly communicated with a flat valve hole arranged on the distributing valve seat 14, and a sealing ring is arranged on the cylinder body 13 and used for isolating oil in the pump from high-pressure oil leaked by the distributing valve seat 14 and providing friction force at the same time so as to prevent the cylinder body 13 from rotating to cause the failure of the plunger pump; the distributing valve seat 14 is provided with a sealing ring to prevent oil in the plunger pump from leaking.
Optionally, the plunger spacer 4 is provided with a concave spherical surface for contact engagement with a spherical plunger head on the through-hole plunger 6.
Compared with the traditional plunger piston shoe structure adopting the rolling process, the through hole plunger piston and piston shoe abutting structure form adopted by the application can effectively avoid the functional failure of the miniature plunger pump caused by the pulling-off of the plunger piston shoe. Compared with the rolling bag structure, the structure has the advantages of simple processing technology, easy production and flexible rotation.
Compared with a flow distribution structure of a flow distribution plate, the application adopts a flow distribution structure form of a sloping cam plate and a flat valve, effectively avoids the problems of increased internal leakage, increased abrasion, reduced efficiency and the like of the miniature plunger pump caused by overturning a cylinder body, greatly improves the efficiency, reliability and service life of the miniature plunger pump.
Compared with a cylinder body rotary driving structure, the application adopts a main shaft rotary driving structure form, effectively avoids the problems of low efficiency and the like of the miniature plunger pump caused by oil stirring of a cylinder body rotor assembly, and improves the working efficiency of the miniature plunger pump. Compared with the cylinder body rotation driving, the structure has less parts, low production cost and high reliability.
The principle of the micro plunger pump is as follows: the plunger pump drives the driving shaft 2 to rotate, drives the swash plate to rotate, and the shoe 3 is abutted against the swash plate due to the return force of the center spring 11, and the through-hole plunger 6 makes linear reciprocating motion in the cylinder hole of the cylinder block 13 along with the rotation of the swash plate.
The sliding shoe 3, the through hole plunger 6, the cylinder hole, the flat valve core and the distributing valve seat are all sealed hard.
When the driving shaft 2 rotates, the swash plate rotates to drive the through hole plunger 6 to reciprocate, when the through hole plunger 6 moves linearly leftwards, a low-pressure cavity is formed between the through hole plunger 6 and the cylinder hole, the slipper hole is communicated with the swash plate oil suction groove, the flat valve core 8 is closed, and oil flows through the through hole plunger from the swash plate oil suction groove to enter the cylinder hole, and the process is called an oil suction process.
On the contrary, when the through-hole plunger 6 moves linearly to the right, a high-pressure cavity is formed between the through-hole plunger 6 and the cylinder hole, and at this time, the swash plate oil suction groove is disconnected from the shoe 3, and the flat valve core 8 is opened, which is called a pressure oil process.
The miniature plunger pump for swash plate and valve flow distribution is provided with three through hole plungers 6, and three sets of corresponding sliding shoes 3, plunger gaskets 4, cylinder holes, flat valve cores 8, valve core springs 9 and the like are arranged. According to the miniature plunger pump provided by the invention, through the arrangement of the length of the oil suction groove on the end face of the swash plate, when one through hole plunger sucks oil, the other two through hole plungers suck oil, so that the efficiency is improved.

Claims (10)

1. A swash plate, valve-split micro plunger pump, comprising: the valve comprises a shell (1), a driving shaft (2), a sliding shoe (3), a return disc (5), a through hole plunger (6), a flat valve core (8), a valve core spring (9), a center ball hinge (10), a center spring (11), a cylinder body (13) and a distributing valve seat (14); wherein,
The middle position of the shell (1) is provided with oil inlets uniformly distributed on the circumference;
The driving shaft (2), the cylinder body (13) and the distributing valve seat (14) are sequentially sleeved in the shell (1), one end of the driving shaft (2) is connected with the plunger pump, the other end of the driving shaft is provided with a sloping cam plate, and the end face of the sloping cam plate is provided with N oil absorption grooves; n is an integer greater than 1;
A central concave hole is formed in the center of the cylinder body (13), N cylinder holes are formed around the central concave hole, a central spring (11) is arranged in the central concave hole, and a through hole plunger (6) is arranged in the cylinder hole;
one end of each through hole plunger (6) is a spherical plunger head, and the other end is a plunger rod; the plunger rod is in clearance fit with a cylinder hole on the cylinder body (13), the spherical plunger head penetrates through the return disc (5) to be connected with the sliding shoe (3), and the sliding shoe (3) is abutted against the end face of the swash plate; the sliding shoe (3) and the through hole plunger (6) are provided with through holes;
One end of the central ball winch (10) is a concave spherical surface, and the other end is contacted with the central spring (11);
one surface of the return disc (5) far away from the sloping cam plate is a convex spherical surface and is contacted and matched with the concave spherical surface of the central spherical winch (10);
The center of the distributing valve seat (14) is provided with an oil outlet, N flat valve holes are arranged around the oil outlet, and each flat valve hole is communicated with the oil outlet; each flat valve hole is correspondingly communicated with each cylinder hole of the cylinder body (13);
A valve core spring (9) is arranged in the flat valve hole, and the flat valve core (8) is arranged between the cylinder body (13) and the valve core spring (9);
When the driving shaft (2) rotates, the swash plate rotates to drive the through hole plunger (6) to reciprocate, when a certain through hole plunger (6) moves linearly towards the swash plate, the sliding shoes (3) corresponding to the through hole plunger (6) are communicated with the oil suction grooves, oil flows through the through hole plunger (6) from the swash plate oil suction grooves to enter cylinder holes, the oil suction process is an oil suction process, and at the moment, the flat valve core (8) closes the passages of the flat valve holes and the oil outlet holes under the action of the elasticity of the valve core springs (9); when the swash plate rotates to disconnect the sliding shoes (3) corresponding to the through hole plungers (6) from the oil suction grooves, the through hole plungers (6) are pushed to squeeze the corresponding flat valve cores (8), the flat valve cores (8) are moved, and the passages of the flat valve holes and the oil outlet holes are communicated, so that the process of pressing oil is realized.
2. The swash plate, valve split micro plunger pump of claim 1, wherein N has a value of 3.
3. The swash plate and valve flow distribution miniature plunger pump according to claim 1, wherein the outer side of the flat valve core (8) is spherical;
an annular sealing belt is arranged on the flat valve core (8).
4. The swash plate, valve split micro plunger pump of claim 1, further comprising: a plunger gasket (4), the plunger gasket (4) being arranged between the spherical plunger head and the return disc (5);
The surface of the plunger gasket (4) facing the spherical plunger head is a concave spherical surface.
5. The swash plate, valve split micro plunger pump of claim 1, further comprising: a retainer ring (12);
a first annular step is arranged in the shell (1), and the driving shaft (2) and the cylinder body (13) are positioned at two sides of the first annular step;
the retainer ring (12) is arranged between the cylinder (13) and the first annular step.
6. The swash plate, valve split micro plunger pump of claim 1, further comprising: a seal ring (7);
The sealing ring (7) is arranged between the cylinder body (13) and the shell (1).
7. The swash plate and valve flow distribution miniature plunger pump according to claim 1, wherein a second annular step is arranged in the housing (1);
the driving shaft (2) is sleeved in the shell (1) through two deep groove ball bearings and one thrust ball bearing;
The two deep groove ball bearings and one thrust ball bearing are sleeved on the driving shaft (2), and the thrust ball bearing is arranged between the two deep groove ball bearings;
and the end face of the deep groove ball bearing far away from one side of the swash plate is attached to the second annular step.
8. The swash plate, valve split micro plunger pump of claim 7, further comprising: a plug (15);
The plug (15) is sleeved on one end, far away from the cylinder body (13), of the distributing valve seat (14), and the plug (15) is in threaded connection with the shell (1).
9. The swash plate and valve flow distribution miniature plunger pump according to claim 1, wherein the drive shaft (2) and the swash plate are of an integral structure.
10. The swash plate, valve-split micro plunger pump according to claim 1, characterized in that the center of the return disc (5) is provided with a central hole.
CN202410096595.9A 2024-01-24 2024-01-24 Swash plate and valve flow distribution miniature plunger pump Pending CN118030437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410096595.9A CN118030437A (en) 2024-01-24 2024-01-24 Swash plate and valve flow distribution miniature plunger pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410096595.9A CN118030437A (en) 2024-01-24 2024-01-24 Swash plate and valve flow distribution miniature plunger pump

Publications (1)

Publication Number Publication Date
CN118030437A true CN118030437A (en) 2024-05-14

Family

ID=90996119

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410096595.9A Pending CN118030437A (en) 2024-01-24 2024-01-24 Swash plate and valve flow distribution miniature plunger pump

Country Status (1)

Country Link
CN (1) CN118030437A (en)

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