CN212130753U

CN212130753U - Bellows positive displacement hydraulic pump

Info

Publication number: CN212130753U
Application number: CN202020469509.1U
Authority: CN
Inventors: 柏洋
Original assignee: Nanjing Puyikang Intelligent Technology Co ltd
Current assignee: Nanjing Puyikang Intelligent Technology Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-12-11
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a bellows positive displacement hydraulic pump, including shell, connecting plate, base, check valve and through-hole, the top surface of shell is run through by the cylinder piece, and the fixed plate that is provided with of basal surface of cylinder piece to the fixed plate is located the inside of shell, the external fixed surface of fixed plate is connected with the fixed block, and the lower surface of fixed block is connected with the spring to the terminal fixed setting of spring is in the inside of shell, the lower fixed surface of fixed plate is connected with bellows main part, and the terminal fixed setting of bellows main part is on the top surface of connecting plate, and the through-hole has been seted up to the central point of connecting plate. This bellows positive displacement hydraulic pump has replaced the plunger rod through bellows main part, can directly fix the top and the end of bellows main part respectively on the top surface of fixed plate basal surface and connecting block to realize the oil absorption oil extraction through the closure of bellows main part and expansion, need not adjust higher precision, it is convenient to make.

Description

Bellows positive displacement hydraulic pump

Technical Field

The utility model relates to a relevant technical field of hydraulic pump specifically is a bellows positive displacement hydraulic pump.

Background

The pump is an important power device in a hydraulic system, and the hydraulic pump realizes oil absorption and oil pressing by changing the volume in a cylinder body through the reciprocating motion of a plunger in the cylinder body, and finally outputs pressure P and flow Q. The plunger pump has the advantages of small leakage, high rated pressure, compact structure, high volumetric efficiency and the like, is widely applied to high-pressure and large-flow occasions, but has some defects:

firstly, the plunger rod and the cylinder body of the common plunger pump have small fit clearance, high manufacturing precision and high cost;

secondly, when the plunger reciprocates, the clearance between the plunger and the cylinder body is easy to cause leakage, and when the viscosity of the medium is high, the efficiency of the pump can be greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bellows positive displacement hydraulic pump, which solves the problems that the plunger rod proposed in the background technology needs to have higher precision with the cylinder body, and the manufacture is inconvenient; the liquid that absorbs leaks from the clearance easily, the problem that the efficiency is lower.

In order to achieve the above object, the utility model provides a following technical scheme: a bellows positive displacement hydraulic pump comprises a shell, a connecting plate, a base, a one-way valve and a through hole, wherein the top surface of the shell is penetrated by a cylindrical block, the bottom surface of the cylindrical block is fixedly provided with a fixing plate which is positioned inside the shell, the outer surface of the fixing plate is fixedly connected with a fixing block, the lower surface of the fixing block is connected with a spring, the tail end of the spring is fixedly arranged inside the shell, the lower surface of the fixing plate is fixedly connected with a bellows main body, the tail end of the bellows main body is fixedly arranged on the top surface of the connecting plate, the central point of the connecting plate is provided with the through hole, the lower surface of the connecting plate is connected with the base, the left side surface of the base is provided with a discharge hole, the right side surface of the base is provided with a, and the outer surface of input tube and output tube all fixes and is provided with the check valve, the basal surface of shell and the top surface of base all fix and are provided with the sealing washer, and shell, connecting plate and base have all seted up the hole to shell, connecting plate and base are all run through by the bolt, the upper surface of cylinder piece is connected with the disc piece, and the disc piece is fixed to be set up at the end of fixed column, and the fixed column is located the top of cylinder piece.

Preferably, the cylindrical block and the shell form a sliding structure through the fixing plate, and the upper surface of the cylindrical block is attached to the outer surface of the disc block.

Preferably, the fixing blocks and the shell form an elastic structure through springs, and the fixing blocks are symmetrically distributed about a longitudinal center line of a side view surface of the fixing plate.

Preferably, the connecting plate and the fixing plate form an elastic structure through the corrugated pipe main body, and the radius of the through hole in the connecting plate is smaller than the inner diameter of the corrugated pipe main body.

Preferably, the connecting plate, the shell and the base are in threaded connection with the bolt through inner holes, and the sealing ring on the shell and the sealing ring of the base are attached to the outer surface of the connecting plate.

Preferably, the central axis of the disk block and the central axis of the fixing column are not in the same horizontal line, and the fixing column and the cylindrical block are perpendicular to each other.

Compared with the prior art, the beneficial effects of the utility model are that: the displacement type hydraulic pump with the corrugated pipe has the advantages that,

1. the corrugated pipe main body replaces a plunger rod, and the top end and the tail end of the corrugated pipe main body can be directly fixed on the bottom surface of the fixing plate and the top surface of the connecting block respectively, so that oil absorption and oil discharge are realized through the closing and the unfolding of the corrugated pipe main body, higher precision does not need to be adjusted, and the manufacturing is convenient;

2. the hydraulic pump realizes oil absorption and oil discharge of the pump by using the volume change and the sealing performance of the corrugated pipe main body, the process has no leakage, the volume efficiency is high, and the oil absorption efficiency can be effectively improved;

3. this hydraulic pump promotes the fixed block on the fixed plate through the self effort of spring for the top that the fixed plate drove the bellows main part upwards slides, reaches automatic re-setting's effect.

Drawings

FIG. 1 is a schematic overall front sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall operation of the present invention;

FIG. 3 is a schematic structural view of the whole explosion front section of the present invention;

FIG. 4 is a schematic side sectional view of the present invention;

fig. 5 is the utility model discloses the fixed plate is connected with the fixed block and is pitched the sectional structure sketch map.

In the figure: 1. a housing; 2. a cylindrical block; 3. a fixing plate; 4. a fixed block; 5. a spring; 6. a bellows body; 7. a connecting plate; 8. a base; 9. a discharge port; 10. a feeding port; 11. an output pipe; 12. an input tube; 13. a one-way valve; 14. a seal ring; 15. an inner bore; 16. a bolt; 17. a disc block; 18. fixing a column; 19. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a bellows positive displacement hydraulic pump comprises a shell 1, a cylindrical block 2, a fixed plate 3, a fixed block 4, a spring 5, a bellows main body 6, a connecting plate 7, a base 8, a discharge port 9, a feeding port 10, an output pipe 11, an input pipe 12, a check valve 13, a seal ring 14, an inner hole 15, a bolt 16, a disc block 17, a fixed column 18 and a through hole 19, wherein the top surface of the shell 1 is penetrated by the cylindrical block 2, the fixed plate 3 is fixedly arranged on the bottom surface of the cylindrical block 2, the fixed plate 3 is positioned in the shell 1, the fixed block 4 is fixedly connected on the outer surface of the fixed plate 3, the spring 5 is connected on the lower surface of the fixed block 4, the tail end of the spring 5 is fixedly arranged in the shell 1, the bellows main body 6 is fixedly connected on the lower surface of the fixed plate 3, the tail end of the bellows main body, the lower surface of connecting plate 7 is connected with base 8, and discharge gate 9 has been seted up to base 8's left side surface, and pan feeding mouth 10 has been seted up to base 8's right side surface, the left side surface of discharge gate 9 is connected with output tube 11, the right side surface of pan feeding mouth 10 is connected with input tube 12, and the equal fixed check valve 13 that is provided with of surface of input tube 12 and output tube 11, the basal surface of shell 1 and base 8's top surface is all fixed and is provided with sealing washer 14, and shell 1, hole 15 has all been seted up to connecting plate 7 and base 8, and shell 1, connecting plate 7 and base 8 all run through by bolt 16, the last surface connection of cylinder piece 2 has disc piece 17, and disc piece 17 is fixed to be set up at the end of fixed column 18, and fixed.

The cylinder block 2 forms a sliding structure with the housing 1 through the fixing plate 3, and the upper surface of the cylinder block 2 is attached to the outer surface of the disc block 17, so that the cylinder block 2 can be pressed in the rotating process of the disc block 17, and the cylinder block 2 can slide downwards in the housing 1 through the fixing plate 3 when the cylinder block 2 is pressed.

Fixed block 4 constitutes elastic construction through spring 5 and shell 1, and fixed block 4 is distributed about the longitudinal center line symmetry of side view of fixed plate 3, and when spring 5 produced the effort to fixed block 4, fixed block 4 at both ends can promote fixed plate 3 and upwards slide.

The connecting plate 7 and the fixing plate 3 form an elastic structure through the corrugated pipe body 6, and the radius of the through hole 19 on the connecting plate 7 is smaller than the inner diameter of the corrugated pipe body 6, and the volume change of the corrugated pipe can be changed by using the elasticity of the corrugated pipe body 6 because the corrugated pipe body 6 has elasticity.

Connecting plate 7, shell 1 and base 8 all are threaded connection through hole 15 and bolt 16, and sealing washer 14 on the shell 1 and the sealing washer 14 of base 8 all laminate mutually with the surface of connecting plate 7, and accessible hole 15 and bolt 16 install connecting plate 7, shell 1 and base 8 fixedly, and through sealing washer 14 on the shell 1 and the sealing washer 14 of base 8, improve holistic leakproofness, prevent the weeping.

The central axis of the disk block 17 and the central axis of the fixing column 18 are not in the same horizontal line, and the fixing column 18 is perpendicular to the cylindrical block 2, and because the central axis of the disk block 17 and the central axis of the fixing column 18 are not in the same horizontal line, the fixing column 18 drives the disk block 17 to eccentrically rotate, so that the disk block 17 eccentrically rotates to extrude the cylindrical block 2 back and forth.

The working principle is as follows: when the bellows positive displacement hydraulic pump is used, according to the figures 1, 2, 3, 4 and 5, firstly, the bolt 16 is plugged into the inner holes 15 of the connecting plate 7, the shell 1 and the base 8 to be screwed, so that the sealing ring 14 is tightly attached to the gap between the shell 1 and the connecting plate 7 and the gap between the connecting plate 7 and the base 8, thereby preventing leakage, then the output pipe 11 and the input pipe 12 are respectively installed on a device needing liquid extraction and a device needing liquid extraction, and the installation is completed at this time, then when the fixed column 18 installed on a certain rotating shaft drives the disc block 17 to rotate, when the eccentric disc block 17 rotates and does not press the cylindrical block 2, the spring 5 can push the fixed block 4 and the fixed block 3 to slide upwards, so that the fixed block 3 drives the top end of the bellows main body 6 to slide upwards to change the volume to generate suction, and liquid is sucked into the through hole 19 from the inlet 10 and the input pipe 12 through the one-way valve 13 to be stored inside the bellows main, and when eccentric disc piece 17 was rotatory when producing thrust to cylinder piece 2, cylinder piece 2 can be slided downwards and extrudees fixed plate 3, make fixed plate 3 drive bellows main part 6 and slide downwards, bellows main part 6's volume changes once more this moment, because input tube 12's check valve 13 only can make liquid get into, and check valve 13 on the output tube 11 can export unable entering, so can push liquid into discharge gate 9 when liquid in the bellows main part 6 receives the promotion, the check valve 13 through output tube 11 discharges, the circulation is so, reach the effect of circulation extraction liquid, whole practicality has been increased.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bellows positive displacement hydraulic pump, includes shell (1), connecting plate (7), base (8), check valve (13) and through-hole (19), its characterized in that: the top surface of the shell (1) is penetrated by the cylindrical block (2), the bottom surface of the cylindrical block (2) is fixedly provided with the fixing plate (3), the fixing plate (3) is positioned inside the shell (1), the outer surface of the fixing plate (3) is fixedly connected with the fixing block (4), the lower surface of the fixing block (4) is connected with the spring (5), the tail end of the spring (5) is fixedly arranged inside the shell (1), the lower surface of the fixing plate (3) is fixedly connected with the corrugated pipe main body (6), the tail end of the corrugated pipe main body (6) is fixedly arranged on the top surface of the connecting plate (7), the central point of the connecting plate (7) is provided with a through hole (19), the lower surface of the connecting plate (7) is connected with the base (8), the left side surface of the base (8) is provided with the discharge hole (9), and the right side surface of, the left side surface of discharge gate (9) is connected with output tube (11), the right side surface of pan feeding mouth (10) is connected with input tube (12), and the surface of input tube (12) and output tube (11) all fixes and is provided with check valve (13), the basal surface of shell (1) and the top surface of base (8) all fix and are provided with sealing washer (14), and shell (1), connecting plate (7) and base (8) have all seted up hole (15), and shell (1), connecting plate (7) and base (8) all run through by bolt (16), the last surface connection of cylinder piece (2) has disc piece (17), and disc piece (17) are fixed to be set up at the end of fixed column (18), and fixed column (18) are located the top of cylinder piece (2).

2. A bellows positive displacement hydraulic pump as claimed in claim 1, wherein: the cylindrical block (2) and the shell (1) form a sliding structure through the fixing plate (3), and the upper surface of the cylindrical block (2) is attached to the outer surface of the disc block (17).

3. A bellows positive displacement hydraulic pump as claimed in claim 1, wherein: the fixing block (4) and the shell (1) form an elastic structure through the spring (5), and the fixing block (4) is symmetrically distributed about the longitudinal center line of the side view surface of the fixing plate (3).

4. A bellows positive displacement hydraulic pump as claimed in claim 1, wherein: the connecting plate (7) and the fixing plate (3) form an elastic structure through the corrugated pipe main body (6), and the radius of a through hole (19) in the connecting plate (7) is smaller than the inner diameter of the corrugated pipe main body (6).

5. A bellows positive displacement hydraulic pump as claimed in claim 1, wherein: connecting plate (7), shell (1) and base (8) all are threaded connection through hole (15) and bolt (16), and sealing washer (14) on shell (1) and sealing washer (14) of base (8) all laminate mutually with the surface of connecting plate (7).

6. A bellows positive displacement hydraulic pump as claimed in claim 1, wherein: the central axis of the disc block (17) and the central axis of the fixed column (18) are not in the same horizontal line, and the fixed column (18) and the cylindrical block (2) are perpendicular to each other.