CN219472268U - Light and small radial plunger pump - Google Patents

Abstract

The utility model discloses a light and small radial plunger pump, which comprises a shell, a plunger rod, a rotary disk, a sealing cover and a positioning disk, wherein the shell is of a tubular structure, a deep groove is formed in the wall of the tube to form a double-layer tubular structure integrally, the inner wall is low, the outer wall is high, the bottom of the deep groove is an inclined plane, an outlet is formed in the highest position of the inclined plane, and an inlet is formed in the lowest position of the inclined plane. The utility model improves the shell mechanism, adopts a double-layer tubular structure to embed the motor, greatly reduces the whole volume of the hydraulic pump, adopts a method of rotating the plunger with a fixed inclined plane, and has the advantages of simpler whole structure, less number of parts, higher detachability, more stable performance and easier maintenance.

Description

Light and small radial plunger pump

Technical Field

The utility model belongs to the technical field of plunger pumps, and particularly relates to a light and small radial plunger pump.

Background

In the development history of hydraulic pumps, a wide variety of hydraulic pumps have emerged. Currently, common hydraulic pumps are classified into gear pumps, vane pumps, plunger pumps, screw pumps, and the like. In the development process of various hydraulic pumps, a plurality of novel hydraulic pumps which are mutually fused and used for reference exist. The direction of hydraulic pump development is generally toward high volumetric efficiency, low leakage, low failure rate, high accuracy, and adjustable. In addition, in the structures of various pumps, a separated design is adopted between a transmission device (a motor) and a working part of a hydraulic pump, and heating is a great problem in some special environments, and the heating of the motor is difficult to avoid under the design.

For vane pumps, the higher the rotational speed the greater the pressure of the vane against the chamber wall, and therefore the greater the heat generation, since the vane needs to be thrown out during rotation to slide along the chamber wall. In addition, the volumetric efficiency of the vane pump is directly related to the size of the cavity, and the overall volume of the vane pump inevitably becomes large to improve the efficiency, so that the vane pump is not dominant in volume. For the plunger pump, the motor and the plunger are arranged in a straight line, and the motor and the plunger inevitably occupy a great space. In addition, the two pumps have complex structures, which is not beneficial to maintenance.

Disclosure of Invention

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that: the utility model provides a light small-size radial plunger pump, includes shell, plunger stick, rotary disk, sealed lid, positioning disk, the shell is a tubular structure, has opened a deep groove again on the pipe wall of pipe and has made whole into a bilayer tubular structure, and the low outer wall of inner wall is high, and the bottom of deep groove becomes a inclined plane, sets up an export in the highest department of inclined plane, sets up an entry in the lowest department of inclined plane, the plunger stick is the metal stick of the same size of shape, and the bottom of stick is the sphere, be provided with the mounting hole that does not run through of same quantity with the plunger stick on the rotary disk to there is round bottom groove one on the rotary disk top surface, set up compression spring in the mounting hole, also set up the recess two that correspond with round bottom groove one in the sealed lid, place the steel ball between recess two in round bottom groove one and the sealed lid, be provided with the locating hole with plunger stick the same quantity on the positioning disk, the plunger stick passes the locating hole on the positioning disk respectively and is connected with the rotary disk, and the effect of positioning disk is that lets each plunger stick keep certain relative positional relation.

As a further aspect of the utility model: the sealing cover is connected with the shell through bolts.

As a further aspect of the utility model: the number of the plunger rods is 6, and the number of the corresponding mounting holes and the corresponding positioning holes are 6.

The beneficial effects are that:

the utility model improves the shell mechanism, adopts a double-layer tubular structure to embed the motor, greatly reduces the whole volume of the hydraulic pump, adopts a method of rotating the plunger with a fixed inclined plane, and has the advantages of simpler whole structure, less number of parts, higher detachability, more stable performance and easier maintenance.

Drawings

In the drawings:

FIG. 1 is an exploded view of the structure of the present utility model;

FIG. 2 is a front view of the assembled utility model;

fig. 3 is a schematic perspective view of the present utility model.

In the figure: 1, a shell; 2, a plunger rod; 3, rotating the disc; 4, sealing the cover; 5, positioning a disc; 6, compressing a spring; 7, steel balls; 8, mounting holes; 9 a first round bottom groove; 10, a second groove; 11 positioning holes; 12 outlets; 13 inlet.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model.

As shown in fig. 1 to 3, a light and small radial plunger pump comprises a shell 1, a plunger rod 2, a rotating disc 3, a sealing cover 4 and a positioning disc 5, wherein the shell 1 is of a tubular structure, a deep groove is formed in the wall of the tube to form a double-layer tubular structure integrally, the inner wall is low and the outer wall is high, the bottom of the deep groove is an inclined plane, an outlet 12 is formed in the highest position of the inclined plane, an inlet 13 is formed in the lowest position of the inclined plane, the plunger rod 2 is a metal rod with the same shape and size, the bottom end of the rod is a spherical surface, the rotating disc 3 is provided with a circle of non-penetrating mounting holes 8 which are the same as the plunger rod 2, a circle of round bottom grooves I9 are formed in the top surface of the rotating disc 3, a compression spring 6 is arranged in the mounting holes 8, a groove II 10 corresponding to the round bottom grooves I9 are also formed in the sealing cover 4, steel balls 7 are placed between the round bottom grooves I9 and the groove II 10, positioning holes with the same number as the plunger rod 2 are formed in the highest position, the positioning disc 2 respectively penetrates through the positioning holes 11 on the rotating disc to keep a certain relative position with the positioning disc 5, and the positioning disc has a certain function of keeping the relative relation with the positioning disc. The sealing cover 4 is connected with the shell 1 through bolts; the number of the plunger rods 2 is 6, and the number of the corresponding mounting holes 8 and the corresponding positioning holes 11 is 6.

In the assembly process of the utility model, a compression spring 6 is respectively placed in 6 mounting holes 8 of a rotating disc 3, six plunger rods 2 are inserted, the plunger rods are then put into a deep groove of a shell 1 together with the rotating disc 3 and a positioning disc 5, steel balls 7 are put into a circular round bottom groove 9 of the rotating disc 3, a sealing cover 4 is arranged, and the sealing cover 4 is connected with the shell 1 through bolts. In order to make the whole volume of the pump small, the hollow in the middle of the casing 1 is the installation position of the motor, and the motor is hidden in the center of the pump in the whole. When the motor is operated, the rotary disk 3 is driven to rotate, the rotary disk 3 rotates to drive the plunger rod 2 to rotate around the center of the shell 1 along the groove of the shell 1, the compression spring 6 is additionally arranged in the mounting hole of the rotary disk 3, the other end of the plunger rod 2 can be tightly attached to the inclined surface of the bottom of the deep groove of the shell, and when the rotary disk 3 rotates, steel balls exist between the rotary disk 3 and the sealing cover 4, so that the sealing cover 4 cannot be influenced.

Working principle: when the two plunger rods pass through the oil suction inlet at the bottommost position, the space formed by the two plunger rods and the deep groove of the shell is maximum, when the two plunger rods rotate to the bottommost position, the space becomes minimum, the space compression causes the pressure of oil to increase, and at the moment, the oil is released from the oil discharge outlet at the bottommost position. The utility model adopts a built-in motor method, so that the whole volume of the hydraulic pump is greatly reduced. And the inclined plane is fixed, and the plunger rotates, so that the whole structure becomes simpler, the number of parts is less, the detachability is higher, the performance is more stable, and the maintenance is easier.

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

Claims (3)

1. The utility model provides a light and small-size radial plunger pump which is characterized in that, including shell (1), plunger rod (2), rotary disk (3), sealed lid (4), positioning disk (5), shell (1) is a tubular structure, have opened a deep groove again on the pipe wall of pipe and have made wholly become a bilayer tubular structure, and the inner wall is low outer wall height, the bottom of deep groove becomes a inclined plane, set up an export (12) in the highest department of inclined plane, set up an entry (13) in the lowest department of inclined plane, plunger rod (2) are the metal rod that the shape size is the same, the bottom of rod is the sphere, be provided with on rotary disk (3) and be provided with non-throughout mounting hole (8) of the same quantity as plunger rod (2) to round bottom recess one (9) have on rotary disk (3) top surface, set up compression spring (6) in mounting hole (8), also set up recess two (10) corresponding with round bottom recess one (9) in sealed lid, place (7) between recess one (9) and sealed recess two (10) in the inclined plane, the positioning disk (5) are provided with the same quantity as plunger rod (2) on the top of the rotary disk (3) and the positioning disk is passed through respectively, the positioning disk (5) is used for keeping a certain relative position relation of each plunger rod.

2. A lightweight small radial piston pump as in claim 1, wherein the sealing cap (4) is bolted to the housing (1).

3. A lightweight and compact radial plunger pump as in claim 1, wherein the number of plunger rods (2) is 6, and the corresponding mounting holes (8) and positioning holes (11) are 6.