CN117605675A - Ultrathin radial plunger oil pump capable of achieving same-side in-out - Google Patents

Abstract

The invention discloses an ultrathin radial plunger oil pump with same-side inlet and outlet, which comprises an end cover, a flange ring, a pump body, an eccentric part, a rotating shaft, a baffle disc, a sealing cover and a plunger rod, wherein the pump body is arranged in the flange ring, the end cover and the sealing cover are respectively arranged on the two sealing pump bodies of the flange ring, the rotating shaft is rotationally connected with the end cover and the sealing cover, the outer end of the rotating shaft penetrates out of the end cover, and the eccentric part is positioned in the pump body and is connected with the rotating shaft. The radial plunger oil pump is characterized in that the oil way structure is changed, the power input ends of the oil inlet and outlet and the rotating shaft which are originally divided into two sides are concentrated on one side of the oil pump, the two sides of the oil pump are divided into a working surface and a mounting surface, and the oil pump is directly attached to the mounting base through the mounting surface, so that the oil pump is lighter and thinner, and the space is occupied less. Simultaneously, with the help of first fastening hole and second fastening hole, can compress tightly the oil duct in the oil pump jointly from inner periphery and periphery, guarantee the validity of sealing washer, prevent the oil leak, improve the durability of oil pump.

Description

Ultrathin radial plunger oil pump capable of achieving same-side in-out

Technical Field

The invention relates to the technical field of radial plunger oil pumps, in particular to an ultrathin radial plunger oil pump with same-side inlet and outlet.

Background

For the civil air defense door field, because the door leaf comprises iron sheet and concrete, lead to heavier, need open and close with the help of hydraulic system or mechanical transmission structure in many cases, some civil air defense door products at present are towards frivolous and economical and practical's direction development simultaneously, so generally select thinner radial plunger pump as the actuating source in the hydraulic system to for civil air defense door further improves economical and practical, often require radial plunger pump frivolous more and simple durable.

In the existing design, as disclosed in the chinese patent application publication No. CN201910903897.1, the name of which is a variable radial plunger pump and the name of which is CN202311331935.3, the pump body inlet and outlet oil of these radial plunger pumps are respectively located at two sides, and based on the consideration of the structural design of the pump body, the inlet and outlet oil interfaces are arranged at two sides of the pump nearby, which necessarily results in the increase of the overall thickness of the pump. If a parallel mounting mode is adopted, an oil inlet and outlet interface of the radial plunger pump needs to be avoided, and the mounting space also needs to be further increased; if the vertical installation mode is adopted (the installation flange is usually arranged on the pump shell), the space occupation is larger, and the original purpose of the light and thin design of the product is overcome.

In addition, the axial connection of a general radial plunger pump is only provided with bolts at the outer periphery, after the radial plunger pump is used for many times, the sealing ring of the oil groove is found to fail from the inner periphery of the sealing ring to generate oil leakage, and the applicant analyzes the flow direction of an oil path of the oil pump and the stress condition of parts because the oil pump begins to pressurize from an axle center, the pressure is dispersed to the periphery, namely the center of the oil pump begins to bear and bulge, the inner periphery of the sealing ring is propped up, and oil leakage is further generated. The durability of the radial plunger pump is insufficient, and the sealing ring needs to be frequently overhauled and replaced.

Disclosure of Invention

The invention aims to provide an ultrathin radial plunger oil pump capable of entering and exiting from the same side, so as to solve the problems that the radial plunger pump is light and thin, oil leakage is easy to occur and durability is insufficient.

In order to solve the technical problems, the invention adopts the following technical scheme:

the ultrathin radial plunger oil pump comprises an end cover, a flange ring, a pump body, eccentric parts, a rotating shaft, a baffle disc, a sealing cover and a plunger rod, wherein the pump body is arranged in the flange ring; wherein,

a first fastening hole is formed among the end cover, the flange ring, the baffle disc and the sealing cover;

a second fastening hole is formed among the end cover, the pump body, the baffle disc and the sealing cover;

the oil outlet channels and the oil inlet channels are symmetrically arranged on two side surfaces of the pump body, the annular groove is formed in one side of the pump body, an oil inlet of the first oil channel and a plurality of oil outlet channels are all located in the annular groove, an oil outlet of the first oil channel and an oil inlet of the second oil channel are located in one side of the pump body and are respectively communicated with the two first oil holes on the end cover, and an oil outlet of the second oil channel is located in the other side of the pump body;

the end cover is provided with a useful oil outlet groove, and a one-way valve for blocking the adaptation of the oil outlet channel is arranged in the oil outlet groove;

the baffle disc is arranged between the sealing cover and the pump body, and the one-way valve is arranged in the oil inlet channel and used for sealing a second oil hole on the baffle disc;

an oil outlet of the second oil duct is communicated with an oil inlet groove on the sealing cover through a third oil hole on the baffle disc, and the oil inlet groove is arranged opposite to the second oil hole.

The further technical scheme is as follows: and one part of the first fastening holes is a fixing hole connected with an external foundation.

The further technical scheme is as follows: the one-way valve consists of a spring and a blocking ball, and the spring abuts against the blocking ball.

The further technical scheme is as follows: an inspection opening is formed in the end cover.

The further technical scheme is as follows: and a limiting groove for the one-way valve is arranged in the oil outlet groove.

The further technical scheme is as follows: the eccentric member is an eccentric bearing.

Compared with the prior art, the invention has at least one of the following beneficial effects:

the invention provides an ultrathin radial plunger oil pump with same-side inlet and outlet, which changes an oil path structure by means of the combination of a lighter end cover, a pump body, a baffle disc and a sealing cover, wherein the oil inlet and outlet which are originally divided into two sides are concentrated on one side of the oil pump, and meanwhile, a power input end of a rotating shaft is positioned on the same side as the oil inlet and outlet, namely, two sides of the oil pump are respectively divided into a working surface and a mounting surface, and the oil pump is directly attached to the mounting foundation through the mounting surface, so that the oil pump is lighter and thinner, and occupies less space.

Simultaneously, set up first fastening hole and end cover, pump body, fender dish and sealed lid between with the help of end cover, flange ring, fender and seal lid between set up the second fastening hole, can compress tightly the oil duct in the oil pump jointly from inner periphery and periphery, guarantee the validity of sealing washer, prevent the oil leak, improve the durability of oil pump.

Drawings

FIG. 1 is a schematic structural view of an ultra-thin radial plunger oil pump of the present invention with in and out on the same side.

Fig. 2 is a schematic view of the end cap of fig. 1 according to the present invention.

Fig. 3 is a schematic view of the pump body of fig. 1 according to the present invention.

Fig. 4 is a schematic view of the structure of fig. 3 at another view angle according to the present invention.

Fig. 5 is a schematic view showing the structure of the sealing cap of fig. 1 according to the present invention.

Reference numerals: 1. an end cap; 2. a flange ring; 3. a pump body; 31. a plunger hole; 32. a first oil passage; 33. a second oil passage; 34. a ring groove; 35. an oil outlet duct; 36. an oil inlet duct; 4. an eccentric member; a rotating shaft; 6. a baffle disc; 7. sealing cover; 8. a plunger rod; 9. a first oil hole; 10. a second oil hole; 11. a third oil hole; 12. an oil inlet groove; 13. a first fastening hole; 14. a second fastening hole; 15. an inspection port; 16. a limit groove; 17. and (5) discharging the oil from the oil groove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present invention and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Embodiment one:

the embodiment is shown in fig. 1, 2, 3, 4 and 5, and an ultrathin radial plunger oil pump with same-side inlet and outlet comprises an end cover 1, a flange ring 2, a pump body 3, an eccentric element 4, a rotating shaft 5, a baffle disc 6, a sealing cover 7 and a plunger rod 8, wherein the pump body 3 is arranged in the flange ring 2, the end cover 1 and the sealing cover 7 are respectively arranged at two parts of the flange ring 2 and seal the pump body 3, the rotating shaft 5 is in rotary connection with the end cover 1 and the sealing cover 7, the outer end of the rotating shaft 5 penetrates out of the end cover 1, and the eccentric element 4 is positioned in the pump body 3 and is connected with the rotating shaft 5; wherein,

a first fastening hole 13 is arranged among the end cover 1, the flange ring 2, the baffle disc 6 and the sealing cover 7;

a second fastening hole 14 is arranged among the end cover 1, the pump body 3, the baffle disc 6 and the sealing cover 7;

the pump body 3 is provided with plunger holes 31, first oil channels 32, second oil channels 33, annular grooves 34, oil outlet channels 35 and oil inlet channels 36, a plurality of plunger holes 31 are distributed annularly and are arranged in the radial direction, a plunger rod 8 is installed in the plunger holes 31 in a sliding mode, one end of the plunger rod 8 is abutted against an eccentric piece 4 through a spring, the oil outlet channels 35 and the oil inlet channels 36 are symmetrically arranged on two side surfaces of the pump body 3, a pair of the oil outlet channels 35 and the oil inlet channels 36 are communicated with one plunger hole 31, the annular grooves 34 are arranged on one side of the pump body 3, an oil inlet of the first oil channel 32 and a plurality of the oil outlet channels 35 are located in the annular grooves 34, an oil outlet of the first oil channel 32 and an oil inlet of the second oil channel 33 are located on one side of the pump body 3 and are respectively communicated with two first oil holes 9 on an end cover 1, and an oil outlet of the second oil channel 33 is located on the other side of the pump body 3;

the end cover 1 is provided with an oil outlet groove 17, and a check valve matched with the oil outlet duct 35 is arranged in the oil outlet groove 17;

the baffle disc 6 is arranged between the sealing cover 7 and the pump body 3, and the one-way valve is arranged in the oil inlet duct 36 and used for blocking the second oil hole 10 on the baffle disc 6;

the oil outlet of the second oil duct 33 is communicated with the oil inlet groove 12 on the sealing cover 7 through the third oil hole 11 on the baffle disc 6, and the oil inlet groove 12 is arranged opposite to the second oil hole 10.

According to the oil pump, on the basis of a reciprocating plunger pump, all components, such as an end cover 1, a flange ring 2, a pump body 3, an eccentric part 4, a rotating shaft 5, a baffle disc 6 and a sealing cover 7 are made lighter and thinner, the whole oil pump is lighter and thinner, meanwhile, an oil path structure is changed by means of the combination of the lighter and thinner end cover 1, the pump body 3, the baffle disc 6 and the sealing cover 7, an oil inlet and an oil outlet which are originally divided into two sides are concentrated on one side of the oil pump, and meanwhile, a power input end of the rotating shaft and the oil inlet and the oil outlet are positioned on the same side, namely two sides of the oil pump are respectively divided into a working face and a mounting face, and the oil pump is directly attached to the mounting base through the mounting face, so that the oil pump is lighter and thinner, and occupies less space.

Simultaneously, set up first fastening hole 13 and end cover 1 between end cover 1, flange ring 2, fender dish 6 and the sealed lid 7, set up second fastening hole 14 between pump body 3, fender dish 6 and the sealed lid 7, can compress tightly the oil duct in the oil pump jointly from inner periphery and periphery, guarantee the validity of sealing washer, prevent the oil leak, improve the durability of oil pump.

Preferably, a part of the first fastening holes 13 is a fixing hole connected to an external foundation.

Preferably, the one-way valve consists of a spring and a blocking ball against which the spring abuts.

The one-way valves are used for blocking the oil outlet channel 35, the blocking balls block the oil outlet channel 35, and oil can not enter the oil outlet channel; the other group of check valves are used for blocking the oil inlet channel 36, and the blocking balls block the second oil holes 10 on the baffle disc 6, so that oil can not only enter or exit.

The oil outlet passage 35 and the oil inlet passage 36 are stepped holes.

Preferably, the end cap 1 is provided with an inspection port 15.

Preferably, a limit groove 16 for a one-way valve is arranged in the oil outlet groove 17.

The limit groove 16 prevents the check valve from being displaced.

Preferably, the eccentric 4 is an eccentric bearing.

The eccentric bearing outer race may be connected to the ends of the plurality of plunger rods 8, changing the sliding friction to rolling friction.

The working process of the invention is as follows: the oil pump is installed with an external foundation through part of first fastening holes 13 (12 in the figure, six are used for fixed installation), then the rotating shaft 5 is connected with the outer end (power input end) of the rotating shaft 5 through driving equipment such as a motor, the rotating shaft 5 carries an eccentric part 4 to eccentrically rotate in a pump cavity of the pump body 3, the eccentric part 4 drives a plurality of plunger rods 8 (8 in the figure) to alternately reciprocate in the plunger holes 31 during rotation, oil enters an oil inlet of a second oil duct 33 through a first oil hole 9 in an end cover 1, an oil outlet of the second oil duct 33 is positioned on the other surface of the pump body 3, when the plunger rods 8 generate negative pressure in the plunger holes 31, a one-way valve in an oil inlet channel 36 is opened, under the action of the negative pressure, the oil in the second oil duct 33 sequentially enters the plunger holes 31 through a third oil hole 11 in the baffle disc 6, an oil inlet groove 12 in the sealing cover 7, the second oil hole 10 in the baffle disc 6 and the oil inlet channel 36 in the pump body 3, when the plunger rods 8 generate positive pressure in the plunger holes 31, the oil in the plunger rods 31 is extruded into an oil outlet channel 35, the oil in the first oil outlet channel 17 enters the first oil duct 17, the oil outlet channel 32 enters the first oil channel 17 through the valve in the first oil outlet channel 17, and then enters the one-way into the first oil channel 32, and then enters the one-way opening and then enters the one-way valve 32 from the first oil channel 1.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (6)

1. An ultra-thin radial plunger oil pump of homonymy business turn over, its characterized in that: the novel sealing device comprises an end cover (1), a flange ring (2), a pump body (3), an eccentric part (4), a rotating shaft (5), a baffle disc (6), a sealing cover (7) and a plunger rod (8), wherein the pump body (3) is installed in the flange ring (2), the end cover (1) and the sealing cover (7) are respectively installed on the two sides of the flange ring (2) and seal the pump body (3), the rotating shaft (5) is rotationally connected with the end cover (1) and the sealing cover (7), the outer end of the rotating shaft (5) penetrates out of the end cover (1), and the eccentric part (4) is located in the pump body (3) and is connected with the rotating shaft (5); wherein,

a first fastening hole (13) is formed among the end cover (1), the flange ring (2), the baffle disc (6) and the sealing cover (7);

a second fastening hole (14) is formed among the end cover (1), the pump body (3), the baffle disc (6) and the sealing cover (7);

the oil pump comprises a pump body (3), wherein a plunger hole (31), a first oil passage (32), a second oil passage (33), a ring groove (34), an oil outlet passage (35) and an oil inlet passage (36) are arranged on the pump body (3), a plurality of plunger holes (31) are annularly distributed and are arranged along the radial direction, a plunger rod (8) is slidably arranged in the plunger hole (31), one end of the plunger rod (8) is abutted against an eccentric piece (4) through a spring, the oil outlet passage (35) and the oil inlet passage (36) are symmetrically arranged on two side surfaces of the pump body (3), a pair of the oil outlet passage (35) and the oil inlet passage (36) are communicated with one plunger hole (31), the ring groove (34) is arranged on one side of the pump body (3), an oil inlet of the first oil passage (32) and a plurality of the oil outlet passages (35) are respectively positioned in the ring groove (34), and an oil outlet of the first oil passage (32) and an oil outlet of the second oil passage (33) are respectively positioned on one side of the pump body (3) and are respectively communicated with the oil outlet of the first end cover (9);

the end cover (1) is provided with a useful oil outlet groove (17), and a one-way valve for blocking the adaptation of the oil outlet channel (35) is arranged in the oil outlet groove (17);

the baffle disc (6) is arranged between the sealing cover (7) and the pump body (3), and the one-way valve is arranged in the oil inlet duct (36) and used for blocking the second oil hole (10) on the baffle disc (6);

an oil outlet of the second oil duct (33) is communicated with an oil inlet groove (12) on the sealing cover (7) through a third oil hole (11) on the baffle disc (6), and the oil inlet groove (12) is arranged opposite to the second oil hole (10).

2. The ipsilateral in and out ultra-thin radial plunger oil pump according to claim 1, wherein: and part of the first fastening holes (13) are fixing holes connected with an external foundation.

3. The ipsilateral in and out ultra-thin radial plunger oil pump according to claim 1, wherein: the one-way valve consists of a spring and a blocking ball, and the spring abuts against the blocking ball.

4. The ipsilateral in and out ultra-thin radial plunger oil pump according to claim 1, wherein: an inspection opening (15) is formed in the end cover (1).

5. The ipsilateral in and out ultra-thin radial plunger oil pump according to claim 1, wherein: a limiting groove (16) for the one-way valve is arranged in the oil outlet groove (17).

6. The ipsilateral in and out ultra-thin radial plunger oil pump according to claim 1, wherein: the eccentric part (4) is an eccentric bearing.