Single rotary vane type lubricating oil pump

Abstract

The utility model relates to a single rotary vane type lubricating oil pump, which belongs to the technical field of single rotary vane type lubricating oil pumps, and comprises a pump body, a pump cavity is arranged in the pump body, two mounting through holes are arranged at the top of the pump body, the mounting through holes are communicated with the pump cavity, an input pipe is arranged in one mounting through hole in a penetrating manner, and an output pipe is arranged in the other mounting through hole in a penetrating manner. A communicating pipe is fixedly installed on the surface of the input pipe, and a filtering assembly is installed on the top of the input pipe in a threaded mode. According to the single-rotary-vane type lubricating oil pump, the filtering assembly is arranged in the input pipe, impurities such as scrap iron in oil liquid are left in the filtering net bag when the oil liquid enters the pump cavity, when oil pressure is reduced, the filtering assembly can be taken out, the filtering net bag is cleaned, and the problem that the scrap iron falling from parts such as gears directly enters the lubricating oil pump is solved; the problems that when a rotary vane rotates, scrap iron is driven to rotate, the cavity wall of a pump cavity is prone to being damaged, sealing is not tight, and oil conveying pressure is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of single-vane lubricating oil pumps, in particular to a single-vane lubricating oil pump. Background Art

[0002] The lubricating oil pump is mainly composed of pump body, gear, shaft, bearing, front cover and rear cover, sealing parts, coupling and other parts. At present, the oil pump used in the lubrication part of the elevator gearbox is mainly valve-matched plunger pump; this type of oil pump has the disadvantages of high cost, high operating failure rate, poor pollution resistance and short life.

[0003] Therefore, Chinese patent CN207364625U discloses a single-vane lubricating oil pump, comprising a pump body, a rotor, a vane and a pressure plate, wherein the pump body is provided with two eccentric circular pump chambers, a rotor is provided in the circular pump chamber at the bottom of the pump body, the outer circle of the rotor matches the inner hole of the circular pump chamber, a vane is provided in the eccentric circular pump chamber at the top of the pump body, the outer circle of the vane matches the inner hole of the eccentric circular pump chamber at the top of the pump body, a U-shaped groove is provided on the end face of the rotor, a boss is provided on the vane, the U-shaped groove cooperates with the boss on the vane, two oil inlet holes symmetrical to the U-shaped groove are provided on the end face of the rotor, and the two oil inlet holes are connected to the oil inlet on the pump body.

[0004] The oil pump of this structure has a dual rotation function, that is, no matter whether the output rotation direction of the gearbox is forward or reverse, the oil outlet of the oil pump can output lubricating oil normally. The oil pump has good low-speed performance. The lubricating oil pump can stably output lubricating oil at a speed of 20rpm, and has a simple structure and is easy to process.

[0005] However, the oil inlet of the lubricating oil pump in this structure is not provided with a filtering structure, resulting in the lubricating oil in the gearbox being directly sucked into the interior of the lubricating oil pump. When the gearbox is working, the gears and other components therein are prone to drop iron filings, which directly enter the interior of the lubricating oil pump. When the vane rotates, it drives the iron filings to rotate, which can easily cause damage to the cavity wall of the pump cavity, resulting in poor sealing and reduced oil delivery pressure. In view of this, the present application proposes a single-vane lubricating oil pump. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a single-vane lubricating oil pump, which has the advantages of filtering the oil before the oil enters the interior of the lubricating oil pump, thereby solving the problem that iron filings dropped from components such as gears directly enter the interior of the lubricating oil pump. When the vane rotates, it drives the iron filings to rotate, which can easily damage the cavity wall of the pump cavity, resulting in poor sealing and reduced oil delivery pressure.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a single rotary vane lubricating oil pump, comprising a pump body, a pump cavity is formed inside the pump body, two mounting through holes are formed on the top of the pump body, the mounting through holes are connected to the pump cavity, an input pipe is passed through the inside of one of the mounting through holes, a connecting pipe is fixedly installed on the surface of the input pipe, a filter assembly is threadedly installed on the top of the input pipe, and an output pipe is passed through the inside of the other mounting through hole;

[0008] The filter assembly includes a sealing cover threadedly mounted on the top of the input pipe, a connecting rod with one end extending to the bottom of the connecting pipe is fixedly mounted on the bottom of the sealing cover, a connecting plate is fixedly mounted on the bottom end of the connecting rod, an inner liner pipe is fixedly mounted on the surface of the connecting plate, and a filter net bag is fixedly mounted on the bottom of the inner liner pipe.

[0009] Furthermore, a sealing plug is fixedly installed on the bottom of the sealing cover, and the sealing plug is threadedly connected to the input pipe.

[0010] Furthermore, an oil hole is provided on the top of the connecting plate, and the surface of the lining pipe contacts the inner wall of the input pipe.

[0011] Furthermore, the pump body has installation cavities at both ends of the pump cavity, the inner diameter of the installation cavity is smaller than the inner diameter of the pump cavity, and the pump cavity and the installation cavity are eccentric.

[0012] Furthermore, a rotor is rotatably mounted inside the mounting cavity, the outer diameter of the rotor is equal to that of the mounting cavity, and a mounting groove having the same length as that of the pump cavity is provided on the surface of the rotor.

[0013] Furthermore, a spring is fixedly mounted at the bottom of the mounting groove, a rotary vane is fixedly mounted at one end of the spring, the rotary vane is slidably mounted inside the mounting groove, and one side of the rotary vane contacts the inner wall of the pump chamber.

[0014] Furthermore, a rotating shaft is rotatably mounted on one side of the pump body, one end of the rotating shaft extends into the interior of the mounting cavity and is fixedly connected to one side of the rotor, and the other end of the rotating shaft is fixedly connected to an external power device.

[0015] Compared with the prior art, the utility model provides a single-vane lubricating oil pump, which has the following beneficial effects:

[0016] The single vane lubricating oil pump connects the lubricating oil output end of the gearbox with the connecting pipe by arranging a filter assembly inside the input pipe. When the oil enters the input pipe through the connecting pipe, the oil first enters the interior of the inner liner pipe and enters the filter net bag through the oil hole. Impurities such as iron filings in the oil are retained in the filter net bag. The oil enters the pump chamber through the filter net bag. When the oil pressure decreases, the filter assembly can be taken out and the filter net bag can be cleaned, which solves the problem of iron filings dropped from components such as gears directly entering the interior of the lubricating oil pump. When the vane rotates, it drives the iron filings to rotate, which is easy to damage the cavity wall of the pump cavity, resulting in poor sealing and reduced oil delivery pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a side sectional view of the utility model;

[0019] Figure 3 This is a cross-sectional view of the filter assembly of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the cross-section of the pump body of the utility model.

[0021] In the figure: 1. pump body; 2. pump chamber; 201. mounting through hole; 3. input pipe; 4. connecting pipe; 5. filter assembly; 51. sealing cover; 511. sealing plug; 52. connecting rod; 53. connecting plate; 531. oil hole; 54. lining pipe; 55. filter net bag; 6. output pipe; 7. mounting chamber; 8. rotor; 9. mounting groove; 10. spring; 11. rotor; 12. rotating shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figure 1-4 A single-vane lubricating oil pump comprises a pump body 1, a pump chamber 2 is provided inside the pump body 1, two mounting through holes 201 are provided on the top of the pump body 1, the mounting through holes 201 are connected with the pump chamber 2, an input pipe 3 is passed through the inside of one of the mounting through holes 201, a connecting pipe 4 is fixedly installed on the surface of the input pipe 3, a filter assembly 5 is threadedly installed on the top of the input pipe 3, and an output pipe 6 is passed through the inside of the other mounting through hole 201.

[0024] The filter assembly 5 includes a sealing cover 51 threadedly mounted on the top of the input pipe 3, a connecting rod 52 with one end extending to the bottom of the connecting pipe 4 is fixedly mounted on the bottom of the sealing cover 51, a connecting plate 53 is fixedly mounted on the bottom of the connecting rod 52, an inner liner 54 is fixedly mounted on the surface of the connecting plate 53, and a filter net bag 55 is fixedly mounted on the bottom of the inner liner 54. The filter net bag 55 is extended into the input pipe 3, and then the sealing cover 51 is mounted on the top of the input pipe 3, the oil enters the input pipe 3 through the connecting pipe 4, and enters the pump chamber 2 after being filtered by the filter net bag 55, so as to protect the pump chamber 2.

[0025] Secondly, a sealing plug 511 is fixedly installed at the bottom of the sealing cover 51, and the sealing plug 511 is threadedly connected to the input pipe 3. An oil hole 531 is provided on the top of the connecting plate 53, and the surface of the inner lining pipe 54 contacts the inner wall of the input pipe 3. After the oil enters the inner lining pipe 54, it enters the filter net bag 55 below the connecting plate 53 through the oil hole 531.

[0026] Meanwhile, installation cavities 7 are provided at both ends of the pump cavity 2 inside the pump body 1 . The inner diameter of the installation cavity 7 is smaller than the inner diameter of the pump cavity 2 , and the pump cavity 2 and the installation cavity 7 are eccentric.

[0027] A rotor 8 is rotatably mounted inside the mounting cavity 7 , the outer diameter of the rotor 8 is equal to that of the mounting cavity 7 , and a mounting groove 9 having the same length as that of the pump cavity 2 is provided on the surface of the rotor 8 .

[0028] Embodiment 2: Based on Embodiment 1, a spring 10 is fixedly installed at the bottom of the mounting groove 9, and a vane 11 is fixedly installed at one end of the spring 10. The vane 11 is slidably installed inside the mounting groove 9, and one side of the vane 11 is in contact with the inner wall of the pump chamber 2. The spring 10 applies pressure to the vane 11, so that the vane 11 is always in contact with the inner wall of the pump chamber 2. During the rotation of the rotor 8, the space of the pump chamber 2 on one side of the forward direction of the vane 11 is continuously compressed, and the oil is pressed into the output pipe 6. The space of the pump chamber 2 on the other side of the vane 11 is synchronously expanded to form a negative pressure, and the oil is sucked into the inside of the pump chamber 2.

[0029] A rotating shaft 12 is rotatably mounted on one side of the pump body 1 , one end of the rotating shaft 12 extends into the interior of the mounting cavity 7 and is fixedly connected to one side of the rotor 8 , and the other end of the rotating shaft 12 is fixedly connected to an external power device.

[0030] When this embodiment is in use, the rotating shaft 12 rotates, driving the rotor 8 to rotate, causing the vane 11 to rotate, sucking the oil into the pump chamber 2 through the input pipe 3, and outputting the oil from the output pipe 6. Before the oil enters the pump chamber 2, it is filtered through the filter assembly 5 to block impurities such as iron filings inside, thereby preventing the impurities such as iron filings from damaging the pump chamber 2.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single vane lubricating oil pump, comprising a pump body (1), characterized in that: The pump body (1) has a pump chamber (2) formed inside, and the top of the pump body (1) has two mounting through holes (201) formed thereon, the mounting through holes (201) being in communication with the pump chamber (2), an input pipe (3) being passed through one of the mounting through holes (201), a connecting pipe (4) being fixedly mounted on the surface of the input pipe (3), a filter assembly (5) being threadedly mounted on the top of the input pipe (3), and an output pipe (6) being passed through the other of the mounting through holes (201); The filter assembly (5) comprises a sealing cover (51) threadedly mounted on the top of the input pipe (3); a connecting rod (52) having one end extending to the bottom of the connecting pipe (4) is fixedly mounted on the bottom of the sealing cover (51); a connecting plate (53) is fixedly mounted on the bottom end of the connecting rod (52); an inner lining tube (54) is fixedly mounted on the surface of the connecting plate (53); and a filter net bag (55) is fixedly mounted on the bottom of the inner lining tube (54).

2. A single vane lubricating oil pump according to claim 1, characterized in that: A sealing plug (511) is fixedly mounted on the bottom of the sealing cover (51), and the sealing plug (511) is threadedly connected to the input pipe (3).

3. A single vane lubricating oil pump according to claim 1, characterized in that: An oil hole (531) is provided on the top of the connecting plate (53), and the surface of the inner lining pipe (54) is in contact with the inner wall of the input pipe (3).

4. A single vane lubricating oil pump according to claim 1, characterized in that: The pump body (1) is provided with mounting cavities (7) at both ends of the pump cavity (2); the inner diameter of the mounting cavity (7) is smaller than the inner diameter of the pump cavity (2); and the pump cavity (2) and the mounting cavity (7) are eccentric.

5. A single vane lubricating oil pump according to claim 4, characterized in that: A rotor (8) is rotatably mounted inside the mounting cavity (7). The outer diameter of the rotor (8) is equal to that of the mounting cavity (7). A mounting groove (9) having the same length as that of the pump cavity (2) is provided on the surface of the rotor (8).

6. A single vane lubricating oil pump according to claim 5, characterized in that: A spring (10) is fixedly mounted at the bottom of the mounting groove (9), a rotary vane (11) is fixedly mounted at one end of the spring (10), the rotary vane (11) is slidably mounted inside the mounting groove (9), and one side of the rotary vane (11) is in contact with the inner wall of the pump chamber (2).

7. The single vane lubricating oil pump according to claim 5, characterized in that: A rotating shaft (12) is rotatably mounted on one side of the pump body (1), one end of the rotating shaft (12) extends into the interior of the mounting cavity (7) and is fixedly connected to one side of the rotor (8), and the other end of the rotating shaft (12) is fixedly connected to an external power device.

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