CN215633557U

CN215633557U - Plunger pump for high-pressure cleaning machine

Info

Publication number: CN215633557U
Application number: CN202120874636.4U
Authority: CN
Inventors: 徐天红
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2022-01-25
Anticipated expiration: 2031-04-26

Abstract

The utility model belongs to the technical field of cleaning machines, in particular to a plunger pump for a high-pressure cleaning machine, which comprises a driving motor, a reduction gearbox, a pump body, a water inlet and a water outlet which are sequentially arranged, wherein a movable plunger is arranged in the pump body; the reduction gearbox is internally provided with a reduction gear and a transmission shaft, the transmission shaft is sleeved with a swash plate assembly, the plunger is abutted against the swash plate assembly, and the plunger is sleeved with a return spring, so that the space layout is reasonable and compact, compared with the conventional driving mode of a cam or an eccentric shaft in the prior art, the driving mode of the swash plate assembly and the plunger is more stable, the pressure output is uniform, the pressure loss is small, a plurality of plungers can be arranged according to the use requirement to increase the output flow, and the high-pressure cleaning machine is not required to occupy too much space to cause the volume and the weight; meanwhile, the axial force of the bearing is decomposed to the plane of the swash plate, the power output is consistent and stable, the failure rate is low, and the service life of the plunger pump is prolonged.

Description

Plunger pump for high-pressure cleaning machine

Technical Field

The utility model belongs to the technical field of cleaning machines, and particularly relates to a plunger pump for a high-pressure cleaning machine.

Background

At present, a plunger pump is a pressure generating device of a high-pressure cleaning machine, belongs to a core component of the high-pressure cleaning machine, and is a displacement pump which utilizes the reciprocating motion of a plunger in a pump body, repeatedly sucks and discharges liquid and increases the liquid pressure through the change of the volume between the plunger and a pump wall. The plunger drives the pump to alternately suck water and press water continuously through continuous reciprocating motion.

The existing cleaning machine is usually provided with a double-plunger pump, a three-plunger pump and a multi-cylinder plunger pump for increasing the flow and improving the efficiency, in order to realize the arrangement of multiple plungers in the prior art, the plungers are usually correspondingly connected with a cam, the structure limits the number of the plungers and also increases the volume of a pump body, and when the cam rotating at high speed pushes the plungers, the plungers are all single-point force application on the cam, so that a rolling bearing of a gear on a reduction gearbox connected with the cam bears larger axial force, the separation of an inner ring and an outer ring of the rolling bearing is easily caused, and the service life of the plunger pump is shortened.

Disclosure of Invention

The utility model aims to provide a plunger pump for a high-pressure cleaning machine, which has the advantages of simple structure, small volume, high working efficiency, continuous and stable output and long service life.

The purpose of the utility model is realized as follows:

a plunger pump for a high-pressure cleaning machine comprises a driving motor, a reduction gearbox and a pump body which are sequentially arranged, wherein the driving motor can drive the pump body to work through the reduction gearbox; a reduction gear is arranged in the reduction box and comprises a first gear and a second gear which are meshed with each other, the first gear is connected with a motor shaft of the driving motor, a transmission shaft is connected with the second gear, a swash plate assembly is sleeved on the transmission shaft, a plunger hole is formed in the pump body, a plunger is arranged in the plunger hole and abutted against the swash plate assembly, and the plunger can be driven to reciprocate axially through the rotation of the swash plate assembly; and the plunger is sleeved with a return spring.

Furthermore, the swash plate assembly comprises a swash plate, a ball plate and a return plate which are sequentially arranged, the swash plate is fixedly connected with the ball plate, a plurality of ball grooves are uniformly formed in the ball plate in the circumferential direction, and a plurality of balls are arranged in the ball grooves; one side of the return disc, which is in contact with the sliding shoes on the plunger, is a plane, and a plurality of ball grooves are formed in the other side of the return disc, which corresponds to the ball disc, the balls are arranged between the ball disc and the return disc, and a ball sleeve ring is further arranged between the ball disc and the return disc.

Furthermore, the sloping cam plate includes sloping cam plate portion, and the protruding shaping in sloping cam plate portion below has the installation department, has seted up on the sloping cam plate and has link up the mounting hole of sloping cam plate portion and installation department.

Furthermore, a fixing part for mounting the ball plate is formed under the swash plate in a protruding mode.

Furthermore, the transmission shaft is provided with a clamping portion and a limiting portion, the clamping portion is used for installation, the clamping portion is installed in the installation hole and is abutted against the side wall of the installation hole, and the limiting portion is abutted against the surface of the swash plate.

Furthermore, one side of the sliding shoe, which is in contact with the return disc, is an arc surface, and the other side of the sliding shoe is a plane.

Furthermore, a safety valve is arranged at the water outlet end of the pump cavity connected with the water outlet.

Furthermore, a first bearing and a second bearing are sleeved on the transmission shaft, and a second gear is sleeved between the first bearing and the second bearing.

Furthermore, at least three plungers are arranged in the pump body, the plungers are uniformly distributed in the pump body, and one exposed ends of the plungers are abutted to the swash plate.

Furthermore, a detachable pump cover is arranged on the pump body, and the reduction gearbox is arranged between the pump body and the pump cover.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

the space layout of the high-pressure cleaning machine is reasonable and compact, the swash plate assembly is sleeved on the transmission shaft connected with the reduction gear, the movable plunger is arranged in the pump shell and is abutted against the swash plate assembly, and the plunger can be driven to reciprocate along the axial direction through the rotation of the swash plate assembly; meanwhile, the axial force of the bearing is decomposed on the plane of the swash plate, so that greater pressure can be generated for the plunger, cleaning water with greater pressure is generated, the power output is consistent and stable, the failure rate is low, the maintenance is simple and convenient, and the service life of the plunger pump is prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a perspective view of the present invention with the pump housing removed.

Fig. 4 is a schematic view of a partial structure of a water inlet end.

Fig. 5 is a schematic view of the structure of the water outlet end part.

FIG. 6 is a perspective view one of the drive shaft and swash plate assembly.

FIG. 7 is a second perspective view of the drive shaft and swash plate assembly.

FIG. 8 is an exploded view of the swash plate assembly.

Fig. 9 is an exploded view of the swash plate assembly two.

Fig. 10 is a perspective view of the plunger.

The reference numerals in the figures denote the meanings:

1-driving a motor; 2-a reduction gearbox; 3-a pump body; 4-a water inlet; 5-water outlet; 6-plunger piston;

7-a water inlet one-way valve; 8-water outlet one-way valve; 9-a first gear; 10-a second gear; 11-motor shaft;

12-a drive shaft; 13-a swash plate assembly; 14-a plunger bore; 15-a return spring; 16-a swash plate;

17-a ball pan; 18-a return disc; 19-a ball groove; 20-a ball bearing; 21-a slipper; 22-ball race;

23-a swash plate portion; 24-a mounting portion; 25-mounting holes; 26-a fixed part; 27-a snap-in part; 28-a limiting part; 29-safety valve; 30-a first bearing; 31-a second bearing; 32-pump cover.

Detailed Description

The utility model is further described below with reference to specific examples:

a plunger pump for a high-pressure cleaning machine comprises a driving motor 1, a reduction gearbox 2 and a pump body 3 which are sequentially arranged, wherein the driving motor 1 can drive the pump body 3 to work through the reduction gearbox 2, the pump body 3 comprises a pump shell, a water inlet 4 and a water outlet 5 are formed in the pump shell, a movable plunger 6 is arranged in the pump shell, a pump cavity is formed in one side of the plunger 6 in the pump shell, a water inlet check valve 7 is arranged at the water inlet end of the pump cavity, which is connected with the water inlet 4, and a water outlet check valve 8 is arranged at the water outlet end of the pump cavity, which is connected with the water outlet 5; a reduction gear is arranged in the reduction gearbox 2 and comprises a first gear 9 and a second gear 10 which are meshed with each other, the first gear 9 is a small gear, the second gear 10 is a big gear, the first gear 9 is connected with a motor shaft 11 of the driving motor 1, a transmission shaft 12 is connected to the second gear 10, a swash plate assembly 13 is sleeved on the transmission shaft 12, a plunger hole 14 is formed in the pump body 3, the plunger 6 is installed in the plunger hole 14, the plunger 6 is abutted to the swash plate assembly 13, and the plunger 6 can be driven to reciprocate axially through the rotation of the swash plate assembly 13; the plunger 6 is sleeved with a return spring 15.

The space layout of the utility model is reasonable and compact, the swash plate assembly 13 is sleeved on the transmission shaft 12 connected with the reduction gear, the movable plunger 6 is arranged in the pump shell, the plunger 6 is abutted against the swash plate assembly 13, and the plunger 6 can be driven to reciprocate along the axial direction through the rotation of the swash plate assembly 13, compared with the conventional driving mode of a cam or an eccentric shaft and an eccentric block in the prior art, the driving mode of the swash plate assembly 13 and the plunger 6 is more stable, the pressure output is uniform, the pressure loss is small, a plurality of plungers 6 can be arranged according to the use requirement to increase the output flow, and the volume and the weight of the high-pressure cleaning machine are not required to be occupied by too much space; meanwhile, the axial force of the bearing is decomposed on the plane of the swash plate 16, so that larger pressure can be generated for the plunger 6, cleaning water with larger pressure is generated, the power output is coherent and stable, the failure rate is low, the maintenance is simple and convenient, and the service life of the plunger pump is prolonged.

Preferably, the swash plate assembly 13 comprises a swash plate 16, a ball plate 17 and a return plate 18 which are sequentially arranged, the swash plate 16 is fixedly connected with the ball plate 17, a plurality of ball grooves 19 are uniformly formed in the circumferential direction of the ball plate 17, and a plurality of balls 20 are arranged in the ball grooves 19; the contact side of the return disc 18 and the sliding shoe 21 on the plunger 6 is a plane, the other side is also provided with a plurality of ball grooves 19 corresponding to the ball disc 17, the balls 20 are arranged between the ball disc 17 and the return disc 18, and a ball sleeve 22 is arranged between the ball disc 17 and the return disc 18.

The utility model discloses a specific swash plate assembly structure which is simple in structure and convenient to disassemble, assemble and maintain. The swash plate assembly 13 comprises a swash plate 16, a ball plate 17 and a return plate 18 which are sequentially arranged, the swash plate 16 is fixedly connected with the ball plate 17, abrasion caused by direct connection of balls 20 and the swash plate 16 is avoided, a plurality of ball grooves 19 are uniformly formed in the circumferential direction of the ball plate 17, a plurality of balls 20 are arranged in the ball grooves 19, the size of the arranged balls 20 is small, the number of the arranged balls is large, not only is too much space not occupied, but also the movement between the sliding shoes 21 on the plunger 6 and the swash plate 16 is changed from sliding to rolling, the friction resistance is reduced, the abrasion of related parts is reduced, and the service life of the plunger piston assembly is prolonged. The return disk 18 is flat on the side contacting the shoe 21 of the plunger 6, and can be preferably abutted against the shoe 21. The ball bearing ring 22 is arranged between the ball bearing disc 17 and the return disc 18 and wraps the balls 20 in the ball bearing ring, the balls 20 are not easy to fall off, the appearance is smoother, the balls 20 can keep moving synchronously, and the stress is more uniform.

Preferably, the swash plate 16 comprises a swash plate portion 23, a mounting portion 24 is formed below the swash plate portion 23 in a protruding mode, and a mounting hole 25 penetrating through the swash plate portion 23 and the mounting portion 24 is formed in the swash plate 16, so that the installation is convenient and the installation is stable. Preferably, the mounting hole 25 is offset from the center of the swash plate 16, and the surface of the swash plate 16 abutting against the bearing on the transmission shaft 12 is an inclined surface with different inclination angles, so that the plunger 6 can be better driven to reciprocate.

Preferably, a fixing portion 26 for mounting the ball tray 17 is further formed under the inclined tray portion 23 in a protruding manner, so that connection is convenient.

Preferably, the transmission shaft 12 is formed with a clamping portion 27 and a limiting portion 28 for mounting the swash plate 16, the clamping portion 27 is installed in the mounting hole 25 and abuts against the side wall thereof, and the limiting portion 28 abuts against the surface of the swash plate 16.

Preferably, one side of the slipper 21, which is in contact with the return disc 18, is an arc surface, and the other side is a plane, when the swash plate assembly 13 rotates, and the swash plate 16 drives the return disc 18 to incline and press the slipper 21, the contact surface is more attached, the stress surface is larger, and friction and contact stress can be reduced.

Preferably, the outlet end of the pump chamber connected to the outlet 5 is also provided with a safety valve 29. When the water outlet 5 is blocked, the water flow out of the water outlet one-way valve 8 is accumulated at the water outlet 5, and when the water flow reaches the threshold value of the safety valve 29, the safety valve 29 is opened, and the water flows back to the pump cavity, so that the utility model is prevented from being damaged.

Preferably, the transmission shaft 12 is sleeved with a first bearing 30 and a second bearing 31, the second gear 10 is sleeved between the first bearing 30 and the second bearing 31, and the first bearing 30 and the second bearing 31 are used for supporting the transmission shaft 12 and friction between parts.

Preferably, at least three plungers 6 are arranged in the pump body 3, the plungers 6 are uniformly distributed in the pump body 3, and one exposed end of each plunger 6 is abutted to the swash plate 16.

The working principle is as follows: the three plungers 6 are arranged, the water absorption/drainage efficiency is higher, the three plungers 6 are arranged in plunger holes 14, the exposed tail ends of the plungers 6 are spherical arc-shaped sliding shoes 21, the sliding shoes 21 completely press the plungers 6 on a swash plate 16 through a return plate 18 under the pressure of a return spring 15, a driving motor 1 drives a transmission shaft 12 to rotate under the action of a reduction box 2, the transmission shaft 12 drives the swash plate 16 to rotate, the three plungers 6 axially reciprocate due to the eccentric rotation of the swash plate 16, and the plungers 6 move to enable a pump cavity to form a vacuum state, so that negative pressure is generated, water is absorbed from a water inlet 4 and then is discharged from a water outlet 5, and the high-speed circulation reciprocation realizes the stable water flow sprayed out of the cleaning machine to perform cleaning work.

Preferably, a detachable pump cover 32 is arranged on the pump body 3, and the reduction gearbox 2 is arranged between the pump body 3 and the pump cover 32. Equivalently, the reduction gearbox 2 is arranged in the pump body 3, so that the structure is more compact, and the size is smaller.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a plunger pump for high pressure cleaner, is including driving motor (1), reducing gear box (2) and the pump body (3) that set gradually, and driving motor (1) can drive pump body (3) work, its characterized in that through reducing gear box (2): the pump body (3) comprises a pump shell, a water inlet (4) and a water outlet (5) are arranged on the pump shell, a movable plunger (6) is arranged in the pump shell, a pump cavity is formed in the pump shell on one side of the plunger (6), a water inlet check valve (7) is arranged at the water inlet end of the pump cavity connected with the water inlet (4), and a water outlet check valve (8) is arranged at the water outlet end of the pump cavity connected with the water outlet (5); a reduction gear is arranged in the reduction gearbox (2), the reduction gear comprises a first gear (9) and a second gear (10) which are meshed with each other, the first gear (9) is connected with a motor shaft (11) of the driving motor (1), the second gear (10) is connected with a transmission shaft (12), a swash plate assembly (13) is sleeved on the transmission shaft (12), a plunger hole (14) is formed in the pump body (3), the plunger (6) is installed in the plunger hole (14), the plunger (6) is abutted against the swash plate assembly (13), and the plunger (6) can be driven to reciprocate axially through the rotation of the swash plate assembly (13); and a return spring (15) is sleeved on the plunger (6).

2. The plunger pump for a high-pressure washer according to claim 1, characterized in that: the swash plate assembly (13) comprises a swash plate (16), a ball plate (17) and a return plate (18) which are sequentially arranged, the swash plate (16) is fixedly connected with the ball plate (17), a plurality of ball grooves (19) are uniformly formed in the ball plate (17) in the circumferential direction, and a plurality of balls (20) are arranged in the ball grooves (19); one side of the return disc (18), which is in contact with the sliding shoes (21) on the plunger (6), is a plane, the other side of the return disc is also provided with a plurality of ball grooves (19) corresponding to the ball disc (17), the balls (20) are arranged between the ball disc (17) and the return disc (18), and a ball ferrule (22) is further arranged between the ball disc (17) and the return disc (18).

3. The plunger pump for a high-pressure washer according to claim 2, characterized in that: the swash plate (16) comprises a swash plate part (23), a mounting part (24) is formed below the swash plate part (23) in a protruding mode, and a mounting hole (25) penetrating through the swash plate part (23) and the mounting part (24) is formed in the swash plate (16).

4. A plunger pump for a high-pressure washer according to claim 3, characterized in that: a fixing part (26) for mounting the ball plate (17) is also convexly formed below the inclined plate part (23).

5. A plunger pump for a high-pressure washer according to claim 3, characterized in that: the shaping is used for the installation on transmission shaft (12) joint portion (27) and spacing portion (28) of sloping cam plate (16), joint portion (27) pack into in mounting hole (25) and rather than the lateral wall butt, spacing portion (28) with the surface butt of sloping cam plate (16).

6. The plunger pump for a high-pressure washer according to claim 2, characterized in that: one side of the sliding shoe (21) contacted with the return disc (18) is an arc surface, and the other side is a plane.

7. The plunger pump for a high-pressure washer according to claim 1, characterized in that: the water outlet end of the pump cavity connected with the water outlet (5) is also provided with a safety valve (29).

8. The plunger pump for a high-pressure washer according to claim 1 or 2, characterized in that: the transmission shaft (12) is sleeved with a first bearing (30) and a second bearing (31), and the second gear (10) is sleeved between the first bearing (30) and the second bearing (31).

9. The plunger pump for a high-pressure washer according to claim 8, characterized in that: the pump is characterized in that at least three plungers (6) are arranged in the pump body (3), the plungers (6) are uniformly distributed in the pump body (3), and one exposed ends of the plungers (6) are abutted to the swash plate (16).

10. The plunger pump for a high-pressure washer according to any one of claims 1 to 7, characterized in that: the pump body (3) is provided with a detachable pump cover (32), and the reduction gearbox (2) is arranged between the pump body (3) and the pump cover (32).