CN220646188U

CN220646188U - Plastic gear pump

Info

Publication number: CN220646188U
Application number: CN202321080979.9U
Authority: CN
Inventors: 雷鸣
Original assignee: Xiamen Jier Micropump Co ltd
Current assignee: Xiamen Jier Micropump Co ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2024-03-22
Anticipated expiration: 2033-05-08

Abstract

The utility model discloses a plastic gear pump which comprises a pump body, wherein an oil inlet pipe is welded at an oil inlet of the pump body, an oil outlet pipe is welded at an oil outlet of the pump body, a spiral groove is formed at the oil inlet of the oil inlet pipe, a filter tip is connected in the spiral groove through an annular spiral table, a bending type shifting plate is annularly distributed in the filter tip, a driving gear is distributed at the upper side in the pump body, and a driven gear is distributed at the lower side in the pump body. The beneficial effects are that: according to the utility model, the screw groove is formed in the oil inlet pipe, and the filter tip is fixed at the oil inlet pipe through the screw table and the screw groove, so that the filter tip is used for prefiltering the oil entering the plastic gear pump on the premise of not influencing the normal connection of the oil inlet pipe, impurities are effectively prevented from entering the pump body along with the oil in the use process of the plastic gear pump, the abrasion of the driving gear and the driven gear is delayed, and the service life of the plastic gear pump is greatly prolonged.

Description

Plastic gear pump

Technical Field

The utility model relates to the technical field of gear pumps, in particular to a plastic gear pump.

Background

The gear pump is a rotary pump which conveys liquid or pressurizes the liquid by means of the change and movement of working volume formed between a pump cylinder and an engaged gear, two closed spaces are formed by two gears, a pump body and a front cover and a rear cover, when the gears rotate, the volume of the space at the disengaging side of the gears is changed from small to large to form vacuum, the liquid is sucked, the volume of the space at the engaging side of the gears is changed from large to small to squeeze the liquid into a pipeline, a suction cavity and a discharge cavity are separated by the engaging line of the two gears, the pressure of the discharge port of the gear pump completely depends on the resistance of the pump, the variety of the gear pump is more, the application field of the gear pump is wider, and the gear pump needs to have a corresponding function.

In order to realize the application of gear pump in acid-base trade, chinese patent No. CN201920620282.3 discloses a plastics gear pump, including polyphenylene sulfide front seat and cavity, the inside of polyphenylene sulfide front seat is provided with the polyether ether ketone bush, hexagon socket head cap screw is installed to the top of polyphenylene sulfide front seat, perfluororubber O type circle is all installed to the upper and lower both sides of cavity, and the cavity is located one side of polyphenylene sulfide front seat, the inside of cavity is provided with the locating pin all around, the inside of cavity is provided with driven gear, and installs the driving gear in driven gear's top, the polyphenylene sulfide back seat is installed to one side of cavity, and the cage is installed to one side of polyphenylene sulfide back seat, the clamp plate is all installed to the upper and lower both sides of cage, the inside of clamp plate is provided with the pan head cross screw.

The plastic gear pump with the structure still cannot filter oil entering the gear pump at the oil inlet pipe during use, so that the gear pump is easy to wear seriously during operation due to the fact that impurities enter the pump body along with the oil, and the service life of the plastic gear pump is greatly reduced.

Disclosure of Invention

First, the technical problem to be solved

Aiming at the current state of the art, the utility model provides the plastic gear pump which can pre-filter the oil entering the pump body and avoid the entry of impurities in the oil.

(II) technical scheme

The utility model is realized by the following technical scheme: the utility model provides a plastic gear pump, which comprises a pump body, wherein an oil inlet pipe is welded at an oil inlet of the pump body, an oil outlet pipe is welded at an oil outlet of the pump body, a screw groove is formed at the oil inlet of the oil inlet pipe, a filter tip is connected in the screw groove through an annular screw table, a bending type shifting plate is annularly distributed in the filter tip, a driving gear is distributed at the upper side in the pump body, and a driven gear is distributed at the lower side in the pump body.

Further, the power input end of the driving gear is connected with a full plastic-coated permanent magnet rotor, a polyphenylene sulfide front seat is fixed on one side of the pump body, a polyphenylene sulfide rear seat is fixed on the other side of the pump body, an isolation cover is fixed on the polyphenylene sulfide rear seat, located on the outer side of the full plastic-coated permanent magnet rotor, and a mounting plate is fixed on the periphery of the isolation cover.

Through adopting above-mentioned technical scheme, the permanent magnet rotor of plastic-coated entirely can drive after the circular telegram the driving gear rotates to the driving gear with the convenient pumping of fluid is realized under driven gear effect.

Further, the screw groove is in screwed connection with the screw table, the screw table is formed on the filter tip, and the filter tip is of a porous structure.

Through adopting above-mentioned technical scheme, the filter tip can be with entering into the internal fluid of pump filters, avoids impurity to enter into along with fluid in the pump body promotes this holistic life of plastics gear pump.

Further, the poking plates are welded with the filter tip, and the poking plates are three.

By adopting the technical scheme, the convenient disassembly and assembly of the filter tip at the oil inlet pipe can be realized by stirring the stirring plate.

Further, the driving gear is in key connection with the power output shaft of the full plastic-coated permanent magnet rotor, the driven gear is in rotary connection with the pump body, and the driving gear is meshed with the driven gear.

By adopting the technical scheme, the driving gear and the driven gear can be conveniently and fixedly installed.

Further, the polyphenylene sulfide front seat is in bolt connection with the pump body and the polyphenylene sulfide rear seat, and the mounting plate is in bolt connection with the isolation cover and the polyphenylene sulfide rear seat.

By adopting the technical scheme, the polyphenylene sulfide front seat and the polyphenylene sulfide rear seat can effectively improve the overall corrosion resistance of the plastic gear pump.

Furthermore, the driving gear and the driven gear are both made of polyether-ether-ketone materials, and the isolation cover is made of titanium alloy materials.

By adopting the technical scheme, the acid and alkali corrosion resistance of the driving gear, the driven gear and the isolation cover can be effectively improved.

(III) beneficial effects

Compared with the prior art, the utility model has the following beneficial effects:

in order to solve the problems that the prior plastic gear pump can not filter the oil entering the plastic gear pump in advance by matching with a polyphenylene sulfide front seat, a polyphenylene sulfide rear seat and an isolation cover through changing the materials of a driving gear and a driven gear, but the oil entering the gear pump can not be filtered by the oil inlet pipe of the plastic gear pump with the structure when in use, so that the driving gear and the driven gear are easily worn seriously during operation due to the fact that impurities enter a pump body along with the oil in operation of the gear pump, the service life of the plastic gear pump is greatly prolonged.

Drawings

FIG. 1 is a schematic view of a plastic gear pump according to the present utility model;

FIG. 2 is an enlarged view of the plastic gear pump of the present utility model at A in FIG. 1;

FIG. 3 is a left side cross-sectional view of a plastic gear pump according to the present utility model;

fig. 4 is an enlarged view of B in fig. 3 of a plastic gear pump according to the present utility model.

The reference numerals are explained as follows:

1. a mounting plate; 2. a pump body; 3. a polyphenylene sulfide front seat; 4. an oil outlet pipe; 5. an oil inlet pipe; 6. a filter; 7. a full plastic-coated permanent magnet rotor; 8. an isolation cover; 9. a polyphenylene sulfide backseat; 10. a poking plate; 11. a drive gear; 12. a driven gear; 13. a screw groove; 14. a screw table.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1-4, a plastic gear pump in this embodiment includes a pump body 2, an oil inlet pipe 5 is welded at an oil inlet of the pump body 2, an oil outlet pipe 4 is welded at an oil outlet of the pump body 2, a spiral groove 13 is formed at an oil inlet of the oil inlet pipe 5, a filter tip 6 is connected in the spiral groove 13 through an annular spiral table 14, a bending type shifting plate 10 is annularly arranged in the filter tip 6, the filter tip 6 can filter oil entering the pump body 2, impurities are prevented from entering the pump body 2 along with the oil, the service life of the plastic gear pump is prolonged, the shifting plate 10 can be conveniently and rapidly disassembled and assembled at the oil inlet pipe 5, a driving gear 11 is arranged at the upper side in the pump body 2, a driven gear 12 is arranged at the lower side in the pump body 2, and the driving gear 11 and the driven gear 12 are main components for realizing oil pumping.

As shown in fig. 1-4, in this embodiment, a power input end of a driving gear 11 is connected with a fully plastic-coated permanent magnet rotor 7, a polyphenylene sulfide front seat 3 is fixed on one side of a pump body 2, a polyphenylene sulfide rear seat 9 is fixed on the other side of the pump body 2, an isolation cover 8 is fixed on the polyphenylene sulfide rear seat 9 and positioned on the outer side of the fully plastic-coated permanent magnet rotor 7, a mounting plate 1 is fixed on the periphery of the isolation cover 8, and the fully plastic-coated permanent magnet rotor 7 drives the driving gear 11 to rotate after being electrified, so that oil is pumped conveniently under the action of the driving gear 11 and a driven gear 12.

As shown in fig. 1-4, in this embodiment, the screw groove 13 is screwed with the screw table 14, the screw table 14 is formed on the filter tip 6, the filter tip 6 is of a porous structure, the shifting plate 10 is welded with the filter tip 6, the shifting plate 10 is three, the driving gear 11 is connected with the power output shaft of the fully plastic-covered permanent magnet rotor 7, the driven gear 12 is rotationally connected with the pump body 2, the driving gear 11 is meshed with the driven gear 12, the convenient installation and fixation of the driving gear 11 and the driven gear 12 can be realized, the polyphenylene sulfide front seat 3 is in bolt connection with the pump body 2 and the polyphenylene sulfide rear seat 9, the mounting plate 1 is in bolt connection with the isolation cover 8 and the polyphenylene sulfide rear seat 9, the polyphenylene sulfide front seat 3 and the polyphenylene sulfide rear seat 9 can effectively improve the overall corrosion resistance of the plastic gear pump, the driving gear 11 and the driven gear 12 are all made of polyether ether ketone, the isolation cover 8 is made of titanium alloy, and the acid and alkali resistance of the driving gear 11, the driven gear 12 and the isolation cover 8 can be effectively improved.

The specific implementation process of this embodiment is as follows: when the novel plastic gear pump is used, the plastic gear pump is fixed at a using position, the oil inlet pipe 5 and the oil outlet pipe 4 are respectively connected with an external pipeline, and then the plastic gear pump can be used only by electrifying and starting the plastic gear pump, wherein in the using process, when oil enters the pump body 2 from the oil inlet pipe 5, the oil can be filtered in advance under the action of the filter tip 6, so that impurities in the oil are effectively prevented from entering the pump body 2, the abrasion of the driving gear 11 and the driven gear 12 is delayed, and the service life of the plastic gear pump is greatly prolonged.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plastic gear pump, characterized in that: including pump body (2), oil inlet department welding of pump body (2) has oil pipe (5), oil outlet department welding of pump body (2) has oil pipe (4), spiral shell groove (13) have been seted up to oil inlet department of oil pipe (5), be connected with filter tip (6) through annular spiral shell platform (14) in spiral shell groove (13), be annular in filter tip (6) and set up plate (10) of bending, driving gear (11) have been laid to the upside in pump body (2), driven gear (12) have been laid to the downside in pump body (2).

2. A plastic gear pump according to claim 1, wherein: the power input end of the driving gear (11) is connected with a full plastic-covered permanent magnet rotor (7), a polyphenylene sulfide front seat (3) is fixed on one side of the pump body (2), a polyphenylene sulfide rear seat (9) is fixed on the other side of the pump body (2), an isolation cover (8) is fixed on the polyphenylene sulfide rear seat (9) and positioned on the outer side of the full plastic-covered permanent magnet rotor (7), and a mounting plate (1) is fixed on the periphery of the isolation cover (8).

3. A plastic gear pump according to claim 1, wherein: the screw groove (13) is screwed with the screw table (14), the screw table (14) is formed on the filter tip (6), and the filter tip (6) is of a porous structure.

4. A plastic gear pump according to claim 1, wherein: the poking plates (10) are welded with the filter tip (6), and the poking plates (10) are three.

5. A plastic gear pump according to claim 2, characterized in that: the driving gear (11) is in key connection with the power output shaft of the full plastic-coated permanent magnet rotor (7), the driven gear (12) is in rotary connection with the pump body (2), and the driving gear (11) is meshed with the driven gear (12).

6. A plastic gear pump according to claim 2, characterized in that: the polyphenylene sulfide front seat (3) is in bolt connection with the pump body (2) and the polyphenylene sulfide rear seat (9), and the mounting plate (1) is in bolt connection with the isolation cover (8) and the polyphenylene sulfide rear seat (9).

7. A plastic gear pump according to claim 2, characterized in that: the driving gear (11) and the driven gear (12) are made of polyether-ether-ketone materials, and the isolation cover (8) is made of titanium alloy materials.