CN213899193U

CN213899193U - Oil distribution shaft of radial plunger pump

Info

Publication number: CN213899193U
Application number: CN202022736953.8U
Authority: CN
Inventors: 常志
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-08-06
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a radial plunger pump's oil distribution shaft, including oil distribution shaft body, be equipped with the first oil distribution window and the second oil distribution window that are used for the radial effort that the balanced oil distribution shaft body received on the oil distribution shaft body, first oil distribution window includes that the front oil discharge distinguishes and the back oil absorption district, and the second oil distribution window includes that the front oil absorption distinguishes and the back oil extraction district, and the front oil absorption distinguishes and the back oil absorption intercommunication, and the front oil discharge distinguishes and the back oil extraction district intercommunication. Through the corresponding setting in two oil absorption district and two oil extraction districts, make the oil distribution axle can solve the unbalanced problem of radial force that receives, improve the big problem of oil distribution axle bending deformation volume, alleviate the wearing and tearing of oil distribution axle.

Description

Oil distribution shaft of radial plunger pump

Technical Field

The utility model relates to a plunger pump technical field, concretely relates to oil distribution shaft of radial plunger pump.

Background

The plunger pump realizes oil suction and oil discharge through the change of the sealed working volume when the plunger reciprocates in the plunger hole. Because the plunger and the inner hole of the cylinder are both cylindrical surfaces, and the matching precision of the sliding surfaces is high, the pump has the characteristics of small leakage, high volumetric efficiency and capability of working under a high-pressure condition.

In the prior art, the abrasion of the flow distribution shaft can be caused by the reason that the oil distribution shaft of the radial plunger pump in a shaft flow distribution mode and a cylinder body are machined and assembled, so that the flow distribution gap is continuously increased, the leakage problem is serious day by day, and the volumetric efficiency of the radial plunger pump is greatly influenced. Particularly, the oil distribution shaft is under the action of radial unbalanced hydraulic pressure, so that the bending deformation of the oil distribution shaft is large, the abrasion of the oil distribution shaft is large, and the service life of the radial plunger pump is further shortened.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to overcome prior art not enough, provide a radial plunger pump's oil distribution shaft, can overcome the unbalanced problem of the radial force that the oil distribution shaft receives, improve the big problem of oil distribution shaft bending deformation volume, alleviate the wearing and tearing of oil distribution shaft.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides an oil distribution shaft of radial plunger pump, includes the oil distribution shaft body, is equipped with the first oil distribution window and the second oil distribution window that are used for balancing the radial effort that the oil distribution shaft body received on the oil distribution shaft body.

As a further improvement of the above technical solution: the first oil distribution window comprises a front oil discharge area and a rear oil suction area, the second oil distribution window comprises a front oil suction area and a rear oil discharge area, the front oil discharge area is located above the front oil suction area, the rear oil suction area is located above the rear oil discharge area, the front oil suction area is communicated with the rear oil suction area, and the front oil discharge area is communicated with the rear oil discharge area.

As a further improvement of the above technical solution: the oil distribution shaft body is further provided with an oil suction port, an oil discharge port, a first channel and a second channel, one end of the first channel is communicated with the oil suction port, the front oil suction area and the rear oil suction area are communicated with the other end of the first channel, one end of the second channel is communicated with the oil discharge port, and the front oil discharge area and the rear oil discharge area are communicated with the other end of the second channel.

As a further improvement of the above technical solution: the oil distribution shaft body is further provided with an oil suction port, an oil discharge port, a first channel, a second channel, a third channel and a fourth channel, one end of the first channel is communicated with the oil suction port, the other end of the first channel is communicated with the front oil suction area, one end of the second channel is communicated with the oil discharge port, the other end of the second channel is communicated with the rear oil discharge area, one end of the third channel is communicated with the first channel, the other end of the third channel is communicated with the rear oil suction area, one end of the fourth channel is communicated with the second channel, and the other end of the fourth channel is communicated with the front oil discharge area.

As a further improvement of the above technical solution: the first channel is communicated with the third channel through a first opening, the second channel is communicated with the fourth channel through a second opening, the first opening corresponds to the oil suction port, and the second opening corresponds to the oil discharge port.

As a further improvement of the above technical solution: and a plurality of triangular unloading grooves are formed at the junction of the closed volumes of the first oil distribution window and the second oil distribution window.

Compared with the prior art, the beneficial effects of the utility model reside in that: when the radial plunger pump works, under the action of pressure oil, two opposite radial acting forces which are mutually offset are formed at the circumferences of the first oil distribution window 31 and the second oil distribution window 32, the problem of unbalanced radial acting force borne by an oil distribution shaft body is solved, the problem of large bending deformation of the oil distribution shaft is improved, and the abrasion of the oil distribution shaft is reduced.

Drawings

Fig. 1 is a schematic structural view of the oil distribution shaft of the radial plunger pump of the present invention.

Fig. 2 is a bottom view of the oil distribution shaft of the present invention.

Fig. 3 is a cross-sectional view taken at a-a in fig. 2.

Fig. 4 is a cross-sectional view taken at B-B in fig. 2.

Fig. 5 is a partially enlarged view of C in fig. 1.

Fig. 6 is a front view of the oil distribution shaft of the present invention.

Fig. 7 is a cross-sectional view taken at D-D in fig. 6.

Fig. 8 is a cross-sectional view at F-F in fig. 6.

The reference numerals in the figures denote: 31. a first oil distribution window; 32. a second oil distribution window; 33. an oil suction port; 34. an oil discharge port; 35. a first channel; 36. a second channel; 37. a third channel; 38. a fourth channel; 39. a first opening; 40. a second opening; 42. a triangular unloading groove; 311. a front oil drain region; 312. a post oil absorption zone; 321. a front oil suction zone; 322. and a back oil discharge area.

Detailed Description

The invention is described in further detail below with reference to the drawings and specific examples.

Fig. 1 to 8 show the utility model discloses an embodiment of radial plunger pump oil distribution shaft, the radial plunger pump oil distribution shaft of this embodiment, including the oil distribution shaft body, be equipped with the first oil distribution window 31 and the second oil distribution window 32 that are used for balancing the radial effort that the oil distribution shaft body received on the oil distribution shaft body.

When the radial plunger pump works, under the action of pressure oil, two opposite radial acting forces which are mutually offset are formed at the circumferences of the first oil distribution window 31 and the second oil distribution window 32, and the problem of unbalanced radial acting force borne by the oil distribution shaft body is solved.

Further, in this embodiment, the first oil distribution window 31 includes a front oil exhaust area 311 and a rear oil exhaust area 312, the second oil distribution window 32 includes a front oil exhaust area 321 and a rear oil exhaust area 322, the front oil exhaust area 311 is located above the front oil exhaust area 321, the rear oil exhaust area 312 is located above the rear oil exhaust area 322, the front oil exhaust area 321 is communicated with the rear oil exhaust area 312, and the front oil exhaust area 311 is communicated with the rear oil exhaust area 322. The front and rear position relations are axially distinguished by the oil distribution shaft body, under the action of pressure oil, two acting forces which are opposite in direction and mutually offset are generated at the circumferences of the front oil discharge area 311 and the rear oil discharge area 322, and the problem of unbalanced radial acting force borne by the oil distribution shaft body is further solved.

Further, in this embodiment, the oil distribution shaft body is further provided with an oil suction port 33, an oil discharge port 34, a first passage 35 and a second passage 36, one end of the first passage 35 is communicated with the oil suction port 33, the front oil suction area 321 and the rear oil suction area 312 are both communicated with the other end of the first passage 35, one end of the second passage 36 is communicated with the oil discharge port 34, and the front oil discharge area 311 and the rear oil discharge area 322 are both communicated with the other end of the second passage 36. When the radial plunger pump sucks oil, the oil flows into the first passage 35 through the oil suction port 33 and further flows into the front oil suction area 321 and the rear oil suction area 312, and when the radial plunger pump discharges oil, the pressure oil flows into the second passage 36 through the front oil discharge area 311 and the rear oil discharge area 322 and is further discharged through the oil discharge port 34; when the oil flow direction of the radial plunger pump is changed reversely, the oil suction and oil discharge functions of the two oil suction areas and the two oil discharge areas are also exchanged.

Further, in this embodiment, the oil distribution shaft body is further provided with an oil suction port 33, an oil discharge port 34, a first passage 35, a second passage 36, a third passage 37 and a fourth passage 38, one end of the first passage 35 is communicated with the oil suction port 33, the other end of the first passage is communicated with the front oil suction area 321, one end of the second passage 36 is communicated with the oil discharge port 34, the other end of the second passage is communicated with the rear oil discharge area 322, one end of the third passage 37 is communicated with the first passage 35, the other end of the third passage is communicated with the rear oil suction area 312, one end of the fourth passage 38 is communicated with the second passage 36, and the other end of the fourth passage 38 is communicated with the front oil discharge area 311. When the radial plunger pump sucks oil, the oil flows into the first passage 35 and the third passage 37 through the oil suction port 33 and further flows into the front oil suction area 321 and the rear oil suction area 312, and when the radial plunger pump discharges oil, the pressure oil flows into the fourth passage 38 and the second passage 36 through the front oil discharge area 311 and the rear oil discharge area 322 and is discharged through the oil discharge port 34. When the oil flow direction of the radial plunger pump is changed reversely, the oil suction and oil discharge functions of the two oil suction areas and the two oil discharge areas are also exchanged.

Further, in the present embodiment, the first passage 35 and the third passage 37 communicate through a first opening 39, the second passage 36 and the fourth passage 38 communicate through a second opening 40, the first opening 39 corresponds to the oil suction port 33, and the second opening 40 corresponds to the oil discharge port 34. The first and

second openings

39 and 40 effectively separate oil from oil drawn and drained.

Further, in this embodiment, a plurality of triangular unloading grooves 42 are respectively disposed at the junction of the closed volumes of the first oil distribution window 31 and the second oil distribution window 32. The design of triangle unloading groove 42 solves the problem of trapped oil in the closed volume area, and reduces the noise and vibration during the operation of the radial plunger pump.

When the plunger pump sucks oil, the oil flows into the first channel 35 and the third channel 37 through the oil suction port 33 and respectively enters the plunger cavities on the lower side of the front oil suction area 321 and the upper side of the rear oil suction area 312 through the first opening 39 to finish the oil suction process; when the plunger pump discharges oil, the generated pressure oil respectively enters the fourth channel 38 and the second channel 36 from the plunger cavity on the upper side of the front oil discharge area 311 and on the lower side of the rear oil discharge area 322 and is discharged through the second opening 40 through the oil discharge port 34 to finish the oil discharge process; at this time, two acting forces with opposite directions and mutually offset are generated at the circumferences of the front oil discharge area 311 and the rear oil discharge area 322, so as to achieve the purpose of radial force balance of the oil distribution shaft body. When the direction of oil suction and oil discharge of the radial plunger pump is changed, the oil suction and oil discharge functions of the two oil suction areas and the two oil discharge areas are also mutually exchanged. Through the design of the radial stress balance of the oil distribution shaft body, the problem that the radial force borne by the oil distribution shaft body is unbalanced is solved, the problem that the bending deformation of the oil distribution shaft body is large is solved, and the abrasion of the oil distribution shaft body is reduced. The oil distribution shaft can be adapted to a unidirectional quantitative radial plunger pump, a unidirectional variable radial plunger pump, a bidirectional quantitative radial plunger pump and a bidirectional variable radial plunger pump.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a radial plunger pump's oil distribution shaft, includes the oil distribution shaft body, its characterized in that: the oil distribution shaft body is provided with a first oil distribution window (31) and a second oil distribution window (32) which are used for balancing radial acting force applied to the oil distribution shaft body.

2. The oil distribution shaft of a radial plunger pump according to claim 1, characterized in that: the first oil distribution window (31) comprises a front oil discharge area (311) and a rear oil suction area (312), the second oil distribution window (32) comprises a front oil suction area (321) and a rear oil discharge area (322), the front oil discharge area (311) is located above the front oil suction area (321), the rear oil suction area (312) is located above the rear oil discharge area (322), the front oil suction area (321) is communicated with the rear oil suction area (312), and the front oil discharge area (311) is communicated with the rear oil discharge area (322).

3. The oil distribution shaft of a radial plunger pump according to claim 2, characterized in that: the oil distribution shaft body is further provided with an oil suction port (33), an oil discharge port (34), a first channel (35) and a second channel (36), one end of the first channel (35) is communicated with the oil suction port (33), the front oil suction area (321) and the rear oil suction area (312) are both communicated with the other end of the first channel (35), one end of the second channel (36) is communicated with the oil discharge port (34), and the front oil discharge area (311) and the rear oil discharge area (322) are both communicated with the other end of the second channel (36).

4. The oil distribution shaft of a radial plunger pump according to claim 2, characterized in that: the oil distribution shaft body is further provided with an oil suction port (33), an oil discharge port (34), a first channel (35), a second channel (36), a third channel (37) and a fourth channel (38), one end of the first channel (35) is communicated with the oil suction port (33), the other end of the first channel is communicated with the front oil suction area (321), one end of the second channel (36) is communicated with the oil discharge port (34), the other end of the second channel is communicated with the rear oil discharge area (322), one end of the third channel (37) is communicated with the first channel (35), the other end of the third channel is communicated with the rear oil suction area (312), one end of the fourth channel (38) is communicated with the second channel (36), and the other end of the fourth channel is communicated with the front oil discharge area (311).

5. The oil distribution shaft of a radial plunger pump according to claim 4, characterized in that: the first channel (35) communicates with the third channel (37) through a first opening (39), the second channel (36) communicates with the fourth channel (38) through a second opening (40), the first opening (39) corresponds to the oil suction opening (33), and the second opening (40) corresponds to the oil discharge opening (34).

6. The oil distribution shaft of a radial plunger pump according to any one of claims 1 to 5, characterized in that: and a plurality of triangular unloading grooves (42) are arranged at the junction of the closed volumes of the first oil distribution window (31) and the second oil distribution window (32).