CN218348390U

CN218348390U - Positive displacement gear lubricating pump

Info

Publication number: CN218348390U
Application number: CN202222523130.6U
Authority: CN
Inventors: 吴洋舟; 徐海东
Original assignee: Jiangyin Taiyang Cnc Equipment Co ltd
Current assignee: Jiangyin Taiyang Cnc Equipment Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-20
Anticipated expiration: 2032-09-23

Abstract

The utility model discloses a positive displacement gear lubricating pump, including the oil tank, the oil tank top sets up the medium plate, and the medium plate top sets up motor, inlet port and manometer, sets up liquid level siren, the pump body, pump head in the oil tank, and the pump head export is passed through the oil outlet joint that oil pipe connected the medium plate top and set up. The utility model has the advantages of reasonable design it is ingenious, overall structure is simple compact, small, the quality is light, and the equipment feedback is sensitive, and the pump body self priming reinforce pollutes the insensitivity to fluid, and the rotational speed scope is big, can impact resistance load, makes the pump maintain convenient, the reliable operation.

Description

Positive displacement gear lubricating pump

Technical Field

The utility model relates to a positive displacement gear lubricating pump.

Background

The lubricating system of the numerical control machine tool occupies an important position in the whole machine of the machine tool, has a lubricating effect and a cold cutting effect, and reduces the influence of the thermal deformation of the machine tool on the precision. The oil pump is used for pumping up lubricating oil and periodically sending the lubricating oil to a lubricating part through the proportional valve, and is used for guide rails and the like on machine tools with high automation degree, such as numerical control machine tools and the like. In a lubricating system of a machine tool guide rail, a hydrostatic lubricating system can eliminate the creeping problem of the machine tool guide rail through a hydrostatic bearing effect, and ensure the durability, safety and the like of the machine tool guide rail, so that the hydrostatic lubricating system is widely applied. The quantitative oil supply lubricating system is a type of hydrostatic pressure lubricating system, and needs to supply equal amount of oil to each lubricating point of a machine tool guide rail to keep the system stable.

The gear pump has the outstanding advantages of simple structure, easy manufacture, low price, strong pollution resistance and the like, and generally, in a lubricating system, the gear pump is often adopted as an oil supply device of the system. In the quantitative oil supply lubrication system, if single pump shunting oil supply is adopted, the liquid resistance of each shunt is different due to different pressures applied to each lubrication point, and the oil amount reaching each lubrication point by shunting oil through the shunt is different, so that the system is unstable.

The positive displacement gear pump is a multipoint lubrication pump developed on the basis of a common gear pump, and is applied to a quantitative oil supply lubrication system. The flow of the oil pump is not affected by load, is uniform, can provide the same amount of oil for each lubricating point, can achieve the use performance of a plurality of pumps although the volume is relatively small, and has economical efficiency. The aluminum alloy die-casting structure is mainly used, and the cavity, the pressure regulation and the pressure relief structure are complex and high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a positive displacement gear lubricating pump, simple structure is compact, convenient maintenance, and stability is high.

To achieve the purpose, the utility model adopts the structure that: the positive displacement gear lubricating pump comprises an oil tank, wherein a middle plate sealed oil tank is arranged at the top of the oil tank, a motor, a pressure gauge, an oil outlet port and an oil inlet hole are arranged at the top of the middle plate, a rotating shaft of the motor extends into the oil tank to be connected with a pump body in the oil tank, the top of the pump body is connected with the bottom of the middle plate through a support, the bottom of the pump body is a pump head, a pressure release valve and a pressure regulating valve are arranged on the pump body, and an outlet of the pump body is connected with the oil outlet port through an oil pipe; the pump head includes the casing, and the casing is connected in the bottom of the pump body, is provided with intermeshing's driving gear and driven gear in the casing, and driving gear connection motor shaft, pump head bottom set up the oil inlet, and the top sets up the oil-out, and the die cavity in the oil-out intercommunication pump body.

And a liquid level alarm is arranged in the oil tank.

The oil inlet is internally provided with a filter screen which is a reverse buckling filter screen and is fixed at the bottom of the middle plate.

The motor is a 220V 30W alternating current motor.

The middle plate is an engineering plastic plate and is connected with the oil tank through a copper joint.

The beneficial effects are as follows: the utility model has the advantages of reasonable design it is ingenious, overall structure is simple compact, small, the quality is light, and the equipment feedback is sensitive, and the pump body self priming reinforce pollutes the insensitivity to fluid, and the rotational speed scope is big, can impact resistance load, makes the pump maintain convenient, the reliable operation.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a view of the pump body coupled to the pump head;

FIG. 4 is a schematic diagram of the pump head;

fig. 5 is a sectional structure view of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

The positive displacement gear lubricating pump shown in fig. 1-2 comprises an oil tank 14, wherein a middle plate 2 is arranged at the top of the oil tank 14 to seal the oil tank 14, a motor 1, a pressure gauge 12, an oil outlet 11 and an oil inlet 13 are arranged at the top of the middle plate 2, a rotating shaft of the motor 1 extends into the oil tank 14 to be connected with a pump body 5 in the oil tank, the top of the pump body 5 is connected with the bottom of the middle plate 2 through a support 4, the bottom of the pump body 5 is a pump head 7, a pressure release valve 8 and a pressure regulating valve 6 are arranged on the pump body 5, and an outlet of the pump body 5 is connected with the oil outlet 11 through an oil pipe 9. As shown in fig. 3, the pump head 7 includes a housing 71, the housing 71 is connected to the bottom of the pump body 5, a driving gear 73 and a driven gear 72 which are engaged with each other are disposed in the housing, the driving gear 73 is connected to a rotating shaft of the motor 1, an oil inlet 74 is disposed at the bottom of the pump head 7, an oil outlet 75 is disposed at the top, the oil outlet 75 is communicated with a cavity in the pump body 5, as shown in fig. 4, when the motor 1 rotates to drive the driving gear 73 to rotate, a suction force generated in a process of engaging and rotating the driving gear 73 and the driven gear 72 sucks the lubricating oil from the oil inlet 74 and stably conveys the lubricating oil to the cavity of the pump body 5 in an equivalent amount in a periodic moving process of the gear, when a pressure is greater than 1.5MPa, the rubber plug 15 in the cavity is pushed, so that the rubber plug 15 blocks the pressure release valve 6, and the lubricating oil enters the oil pipe 9.

A liquid level alarm 3 is arranged in the oil tank 14.

Be equipped with filter screen 10 in the inlet port 13, filter screen 10 is the turn-buckle formula filter screen, fixes in medium plate 2 bottom, and when filling lubricating oil, the filter screen can't be taken out like this, avoids dirty oil to get into the oil pump unfiltered.

The motor 1 is an 220V 30W alternating current motor.

The middle plate 2 is an engineering plastic plate and is connected with the oil tank 14 through a copper joint.

The utility model has the advantages of reasonable design ingenious, overall structure is simple compact, small, the quality is light, and the equipment feedback is sensitive, and the pump body self priming is strong, and is insensitive to fluid pollution, and the rotational speed scope is big, can the impact load, makes the pump maintain convenient, the reliable operation.

The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.

Claims

1. The positive displacement gear lubricating pump comprises an oil tank and is characterized in that a middle plate sealed oil tank is arranged at the top of the oil tank, a motor, a pressure gauge, an oil outlet interface and an oil inlet hole are arranged at the top of the middle plate, a rotating shaft of the motor extends into the oil tank to be connected with a pump body in the oil tank, the top of the pump body is connected with the bottom of the middle plate through a support, the bottom of the pump body is a pump head, a pressure release valve and a pressure regulating valve are arranged on the pump body, and an outlet of the pump body is connected with the oil outlet interface through an oil pipe; the pump head includes the casing, and the casing is connected in the bottom of the pump body, is provided with intermeshing's driving gear and driven gear in the casing, and driving gear connection motor shaft, pump head bottom set up the oil inlet, and the top sets up the oil-out, and the die cavity in the oil-out intercommunication pump body.

2. The positive displacement gear lubrication pump of claim 1, wherein a fluid level alarm is disposed within said oil tank.

3. The positive displacement gear lubrication pump as claimed in claim 1, wherein a strainer is disposed in said oil inlet hole, and said strainer is a reverse buckling type strainer fixed to the bottom of said middle plate.

4. The positive displacement gear lubrication pump of claim 1, wherein said motor is a 220V 30W ac motor.

5. The positive displacement gear lubrication pump as claimed in claim 1, wherein said middle plate is an engineering plastic plate and is connected to an oil tank through a copper joint.