CN220505307U

CN220505307U - Roots vacuum pump lubricating arrangement

Info

Publication number: CN220505307U
Application number: CN202322257360.7U
Authority: CN
Inventors: 耿成龙; 白宇; 宰永阳
Original assignee: Suzhou Duer Oxygen Equipment Co ltd
Current assignee: Suzhou Duer Oxygen Equipment Co ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2024-02-20
Anticipated expiration: 2033-08-22

Abstract

The utility model discloses a Roots vacuum pump lubricating device, and relates to the technical field of Roots vacuum pumps. Wherein, this roots vacuum pump lubricating arrangement includes: a pump body; the adapter flange is connected with the upper end face of the pump body; the sealing oil inlet is arranged at one side of the adapter flange; the filter is communicated with the sealing oil inlet through a first pipeline; the variable-frequency constant-current pump is communicated with the input end of the filter through a second pipeline; and the oil drum is communicated with the input end of the variable-frequency constant-current pump through a third pipeline. The utility model solves the problems that the fluidity is high due to low concentration of desalted water, and the temperature of the vacuum pump is lost due to insufficient reduction, so that the temperature of the vacuum pump can be reduced due to the need of large flow; and the desalinated water with high water quality requirement and poor water quality can generate scale between impellers to influence the performance and service life of the vacuum pump, and the desalinated water manufacturing device has high price, the cost of manufacturing water is high, and the cost of users can be increased after long-term use.

Description

Roots vacuum pump lubricating arrangement

Technical Field

The utility model relates to the technical field of Roots vacuum pumps, in particular to a Roots vacuum pump lubricating device.

Background

The conventional small wet Roots vacuum pump lubricating device uses desalted water as a medium, and has the main effects that a sealed cavity is formed between an impeller and a pump body through a large amount of desalted water to achieve a sealing effect, and the impeller is rotated to generate high Wen Daizou by utilizing the fluidity of the desalted water, so that the temperature of a vacuum pump unit is reduced. However, the use of desalted water has the following drawbacks: the low concentration of desalted water leads to high fluidity, which leads to loss of the temperature of the vacuum pump when the temperature of the vacuum pump is not sufficiently reduced, so that a large flow is needed to reduce the temperature of the vacuum pump; and the desalinated water with high water quality requirement and poor water quality can generate scale between impellers to influence the performance and service life of the vacuum pump, and the desalinated water manufacturing device has high price, the cost of manufacturing water is high, and the cost of users can be increased after long-term use. In view of the above-mentioned problems, no effective solution has been proposed yet.

Disclosure of Invention

The utility model aims to: a Roots vacuum pump lubrication device is provided to solve the above problems in the prior art.

The technical scheme is as follows: roots vacuum pump lubricating arrangement includes: a pump body; the adapter flange is connected with the upper end face of the pump body; the sealing oil inlet is arranged at one side of the adapter flange; the filter is communicated with the sealing oil inlet through a first pipeline; the variable-frequency constant-current pump is communicated with the input end of the filter through a second pipeline; the oil drum is communicated with the input end of the variable-frequency constant-current pump through a third pipeline; the liquid level sensor is arranged in the pump body and is electrically connected with the variable-frequency constant-current pump; the liquid level sensor is used for detecting the liquid level of engine oil in the pump body, a detection signal is fed back to the variable-frequency constant-current pump, and the variable-frequency constant-current pump sends a driving signal according to the fed-back detection signal to convey the engine oil in the oil drum into the pump body.

Preferably, three rotors are disposed in the pump body along the horizontal direction, and the three rotors include: the driving rotor is respectively connected with the two driven rotors in a meshed mode, a rotating shaft is arranged at the center of the driving rotor, and one end of the rotating shaft is connected with the servo motor.

Preferably, the three rotors each have a four-bladed shape.

Preferably, the blades of the driving rotor which are oppositely arranged are arranged along the vertical direction, and the driven rotors are symmetrically arranged relative to the driving rotor.

Preferably, the top of the adapter flange is provided with an oil supplementing assembly.

Preferably, the oil supplementing assembly comprises: the oil storage shell that sets up perpendicularly, the through-hole has been seted up to oil storage shell's bottom center department, the bottom of through-hole is provided with the extension pipe, be provided with the ball valve in the extension pipe, the ball valve extends to preset engine oil position in the pump body.

Preferably, a threaded sealing cover is arranged at the top of the oil storage shell.

Preferably, a filter cavity is arranged in the oil drum, the filter cavity is positioned at the center of the oil drum, and a plurality of filter holes are formed in one side, close to the top of the filter cavity, of the filter cavity.

Preferably, the filter cavity is detachably connected with the oil drum.

Preferably, the outer side of the bottom of the filter cavity is provided with a containing groove, and the outer edge of the containing groove is attached to the inner wall of the oil drum.

The beneficial effects are that: in the embodiment of the application, the mode of oil lubrication and automatic liquid level control is adopted, the liquid level sensor is used for detecting the liquid level of the engine oil in the pump body, the detection signal is fed back to the variable-frequency constant-current pump, the variable-frequency constant-current pump sends a driving signal according to the fed-back detection signal, and the engine oil in the oil drum is conveyed into the pump body, so that the purposes of lubricating the impeller and controlling the liquid level are achieved, good technical effects of reducing the temperature and reducing the cost are achieved, the problem that the fluidity is high due to low concentration of desalted water, the temperature of the vacuum pump is lost due to insufficient reduction of the concentration of desalted water, and the temperature of the vacuum pump can be reduced due to the need of large flow; and the desalinated water with high water quality requirement and poor water quality can generate scale between impellers to influence the performance and service life of the vacuum pump, and the desalinated water manufacturing device has high price, the cost of manufacturing water is high, and the technical problem of increasing the cost of users can be solved.

Drawings

FIG. 1 is a schematic plan view of a lubricating apparatus for a Roots vacuum pump according to the present utility model;

FIG. 2 is a schematic diagram of the rotor structure of the Roots vacuum pump lubrication device of the present utility model;

FIG. 3 is a schematic diagram of the oil replenishing assembly of the Roots vacuum pump lubrication device of the present utility model;

fig. 4 is a schematic diagram of the oil drum structure of the roots vacuum pump lubrication device of the present utility model.

The reference numerals are:

1. a pump body; 2. an adapter flange; 3. sealing the oil inlet; 4. a filter; 5. a first pipe; 6. a variable frequency constant flow pump; 7. a second pipe; 8. an oil drum; 9. a third conduit; 10. a driving rotor; 11. a driven rotor; 12. an oil supplementing assembly; 13. an oil storage housing; 14. an extension tube; 15. a ball valve; 16. a threaded sealing cover; 17. a filter chamber; 18. and a containing groove.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the present application relates to a roots vacuum pump lubrication device. This roots vacuum pump lubricating arrangement includes: a pump body 1; the pump body 1 is a main body part of the Roots vacuum pump, and can realize good accommodating effect; meanwhile, corresponding functions can be realized through assembly and matching among the components.

The adapter flange 2 is connected with the upper end face of the pump body 1; through being provided with adapter flange 2, can realize good adapter cooperation effect to the effect of multiple function.

A sealing oil inlet 3 arranged at one side of the adapter flange 2; good sealing oil access to the pump body 1 can be achieved.

A filter 4 which communicates with the seal oil inlet 3 through a first pipe 5; good filtering effect can be realized, so that the proportion of impurities entering the pump body 1 is reduced, and the service life of the pump body 1 is prolonged.

The variable-frequency constant-current pump 6 is communicated with the input end of the filter 4 through a second pipeline 7; the variable-frequency constant-current pump 6 controls the rotating speed of the motor through a frequency converter, and adjusts the output frequency and voltage of the motor according to actual requirements, so that the constant flow is realized; meanwhile, the running speed of the pump can be automatically regulated according to the process requirement, so that the flow is always kept at a preset value.

The oil drum 8 is communicated with the input end of the variable-frequency constant-current pump 6 through a third pipeline 9; a good oil supply effect can be achieved. The diameters of the conveying pipelines selected from the first pipeline 5, the second pipeline 7 and the third pipeline 9 are 2.1-2.5 mm, and the lubricating effect of the wet vacuum pump can be met only by 0.5 liter of oil every day, so that the use of desalted water is abandoned, and the large cost of a desalted water device and the manufacturing of desalted water is saved. And the influence of scale generated on the impeller due to poor quality of the desalted water on the service life and performance of the equipment is avoided.

The liquid level sensor is arranged in the pump body 1 and is electrically connected with the variable-frequency constant-current pump 6; good engine oil liquid level detection effect can be achieved, so that engine oil is guaranteed to be in a preset position, and good lubrication effect is achieved.

The liquid level sensor is used for detecting the liquid level of the engine oil in the pump body 1, a detection signal is fed back to the variable-frequency constant-current pump 6, and the variable-frequency constant-current pump 6 sends a driving signal according to the fed-back detection signal to convey the engine oil in the oil drum 8 into the pump body 1. The liquid level sensor is adopted to automatically detect the liquid level height of the engine oil, so that the real-time liquid level detection effect can be realized; meanwhile, the engine oil in the oil drum 8 can be injected into the pump body 1 for lubrication through the variable-frequency constant-current pump 6, so that the effects of prolonging the service life of the pump body 1 and reducing the production cost are achieved.

By adopting the device, the device is simple to manufacture, low in price, economical and practical and convenient to install; the No. 68 turbine oil used by the device has good lubricating effect, can reduce the temperature rise of the impeller and the shell of the vacuum pump, and can also form a certain sealing effect between the impeller and the pump body 1.

The small wet Roots vacuum pump solves the problems that the manufacturing cost is high, the manufacturing device is expensive, and the requirement on water quality is high due to the use of desalted water.

From the above description, it can be seen that the following technical effects are achieved:

in the embodiment of the application, the mode of oil lubrication and automatic liquid level control is adopted, the liquid level sensor is used for detecting the liquid level of the engine oil in the pump body 1 and feeding back detection signals to the variable-frequency constant-current pump 6, the variable-frequency constant-current pump 6 sends driving signals according to the fed-back detection signals, and the engine oil in the oil drum 8 is conveyed into the pump body 1, so that the purposes of lubricating impellers and controlling the liquid level are achieved, the good technical effects of temperature reduction and cost reduction are achieved, the problem that the fluidity is high due to low concentration of desalted water, the temperature of a vacuum pump is lost due to insufficient reduction, and the temperature of the vacuum pump can be reduced due to large flow; and the desalinated water with high water quality requirement and poor water quality can generate scale between impellers to influence the performance and service life of the vacuum pump, and the desalinated water manufacturing device has high price, the cost of manufacturing water is high, and the technical problem of increasing the cost of users can be solved.

As shown in fig. 2, three rotors are disposed in the pump body 1 along the horizontal direction, and the three rotors include: the driving rotor 10 is respectively connected with the two driven rotors 11 in a meshed mode, a rotating shaft is arranged at the center of the driving rotor 10, and one end of the rotating shaft is connected with the servo motor. It can be appreciated that by adopting three rotors, an improvement in production efficiency can be achieved; meanwhile, a mode of matching the master rotor and the slave rotor is adopted, so that a good meshing transmission effect can be achieved.

Further, the three rotors are four-bladed in shape. It will be appreciated that by using a four-lobed rotor shape, the effect of force equalisation can be achieved, thereby reducing the amount of clearance created by deformation.

Further, the blades of the driving rotor 10 which are oppositely disposed are disposed along a vertical direction, and the driven rotors 11 are symmetrically disposed with respect to the driving rotor 10.

Further, the top of the adapter flange 2 is provided with an oil supplementing assembly 12. It can be appreciated that by adding the oil supplementing assembly 12, the auxiliary oil supplementing effect can be realized; meanwhile, the start-stop frequency of the variable-frequency constant-current pump 6 can be reduced, so that the effect of reducing energy consumption is achieved, and the effect of saving cost is achieved. Meanwhile, by the aid of the oil supplementing assembly 12, the Roots vacuum pump does not need to stop for adding lubricating oil, so that safe operation of equipment is guaranteed, the problem of unqualified product quality caused by stopping is solved, and stable operation of the atmospheric and vacuum device is guaranteed.

As shown in fig. 3, the oil replenishment assembly 12 includes: the oil storage casing 13 of perpendicular setting, the bottom center department of oil storage casing 13 has seted up the through-hole, the bottom of through-hole is provided with extension pipe 14, be provided with ball valve 15 in the extension pipe 14, ball valve 15 extends to preset engine oil position in the pump body 1. It will be appreciated that the number of components,

when the oil replenishing assembly 12 is installed, the ball valve 15 at the lower side of the oil storage shell 13 is in an open state during the running of the Roots vacuum pump, and when the liquid level of the Roots vacuum pump is reduced and lubricating oil needs to be added, the ball valve 15 is closed, and the threaded sealing cover 16 at the top of the oil storage shell 13 is opened for filling. Preferably, the oil compensating assembly 12 is entirely formed by turning polytetrafluoroethylene.

Further, a threaded sealing cover 16 is arranged at the top of the oil storage shell 13. It will be appreciated that by providing the screw thread sealing cap 16, not only can a good sealing effect be achieved, but also an effect of facilitating the addition of oil can be achieved.

Further, a filter cavity 17 is arranged in the oil drum 8, the filter cavity 17 is positioned at the center of the oil drum 8, and a plurality of filter holes are formed in one side, close to the top, of the filter cavity 17. It can be understood that by providing the filter cavity 17, a good engine oil filtering effect can be achieved, so that the purity of engine oil is improved; and only be provided with the filtration pore in filter chamber 17 near top one side, can further improve the effect of filtration, make the whole sediment in filter chamber 17 bottom outside.

Further, the filter chamber 17 is detachably connected with the oil drum 8. It can be understood that the effect of easy disassembly and assembly can be realized, thereby realizing the effect of convenient cleaning.

As shown in fig. 4, a receiving groove 18 is provided on the outer side of the bottom of the filter cavity 17, and the outer edge of the receiving groove 18 is attached to the inner wall of the oil drum 8. It can be understood that a good impurity accommodating effect can be achieved, thereby achieving an effect of facilitating taking out. Preferably, the shape of the accommodating cavity can be U-shaped or V-shaped; both forms can realize the effect of taking out after easily precipitating the impurity.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present utility model within the scope of the technical concept of the present utility model, and these equivalent changes all fall within the scope of the present utility model.

Claims

1. Roots vacuum pump lubricating arrangement, its characterized in that includes:

a pump body;

the adapter flange is connected with the upper end face of the pump body;

the sealing oil inlet is arranged at one side of the adapter flange;

the filter is communicated with the sealing oil inlet through a first pipeline;

the variable-frequency constant-current pump is communicated with the input end of the filter through a second pipeline;

the oil drum is communicated with the input end of the variable-frequency constant-current pump through a third pipeline; and

The liquid level sensor is arranged in the pump body and is electrically connected with the variable-frequency constant-current pump;

the liquid level sensor is used for detecting the liquid level of engine oil in the pump body, a detection signal is fed back to the variable-frequency constant-current pump, and the variable-frequency constant-current pump sends a driving signal according to the fed-back detection signal to convey the engine oil in the oil drum into the pump body.

2. The roots vacuum pump lubrication device according to claim 1, wherein three rotors are provided in the pump body in a horizontal direction, the three rotors including: the driving rotor is respectively connected with the two driven rotors in a meshed mode, a rotating shaft is arranged at the center of the driving rotor, and one end of the rotating shaft is connected with the servo motor.

3. The roots vacuum pump lubrication device according to claim 2, wherein three of the rotors are four-bladed in shape.

4. A roots vacuum pump lubrication device according to claim 3, wherein the oppositely disposed vanes of the driving rotor are disposed in a vertical direction, and the two driven rotors are disposed symmetrically with respect to the driving rotor.

5. The roots vacuum pump lubrication device of claim 1, wherein the top of the adapter flange is provided with an oil refill assembly.

6. The roots vacuum pump lubrication device of claim 5, wherein the oil refill assembly comprises: the oil storage shell that sets up perpendicularly, the through-hole has been seted up to oil storage shell's bottom center department, the bottom of through-hole is provided with the extension pipe, be provided with the ball valve in the extension pipe, the ball valve extends to preset engine oil position in the pump body.

7. The roots vacuum pump lubrication device of claim 6, wherein a threaded sealing cover is provided on top of the oil storage housing.

8. The roots vacuum pump lubrication device according to claim 1, wherein a filter cavity is arranged in the oil drum, the filter cavity is positioned at the center of the oil drum, and a plurality of filter holes are formed in one side of the filter cavity close to the top of the filter cavity.

9. The roots vacuum pump lubrication apparatus of claim 8, wherein the filter chamber is removably connected to the oil drum.

10. The roots vacuum pump lubrication device according to claim 8, wherein a containing groove is formed in the outer side of the bottom of the filter cavity, and the outer edge of the containing groove is attached to the inner wall of the oil drum.