CN210033813U

CN210033813U - Plastic gear pump

Info

Publication number: CN210033813U
Application number: CN201920620282.3U
Authority: CN
Inventors: 房国曙; 陈甲兵
Original assignee: Suzhou Mackay West Fluid Technology Co Ltd
Current assignee: Suzhou Mackay West Fluid Technology Co Ltd
Priority date: 2019-05-01
Filing date: 2019-05-01
Publication date: 2020-02-07
Anticipated expiration: 2029-05-01

Abstract

The utility model discloses a plastic gear pump, including polyphenylene sulfide front bezel and cavity, the inside of polyphenylene sulfide front bezel is provided with polyether ether ketone bush, hexagon socket head cap screw is installed to the top of polyphenylene sulfide front bezel, 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 bezel, the inside of cavity is provided with the locating pin all around, the inside of cavity is provided with driven gear, and driven gear's top installs the driving gear, the polyphenylene sulfide back seat is installed to one side of cavity, and one side of polyphenylene sulfide back seat installs the cage, the clamp plate is all installed to the upper and lower both sides of cage, the inside of clamp plate is provided with coiled head cross screw. This plastic gear pump is provided with the cage, can effectually separate outside object and the inside subassembly of gear pump through the cage, and corrosion-resistant titanium alloy material can effectual improvement gear pump anticorrosion's performance.

Description

Plastic gear pump

Technical Field

The utility model relates to a plastic gear pump technical field specifically is a plastic gear pump.

Background

The gear pump is a rotary pump which conveys liquid or boosts the liquid by means of the change and movement of working volume formed between a pump cylinder and meshing gears, and comprises two gears, a pump body and front and rear covers, when the gears rotate, the volume of the space at the gear disengagement side is changed from small to large to form vacuum to suck the liquid, the volume of the space at the gear meshing side is changed from large to small to squeeze the liquid into a pipeline, a suction cavity and a discharge cavity are separated by the meshing line of the two gears, the pressure of the discharge port of the gear pump completely depends on the resistance at the pump outlet, the gear pumps are various, the application field is wide, and therefore the gear pump needs to have adaptive functions.

The existing plastic gear pump is often not good in corrosion resistance in the using process, and the problem that the existing plastic gear pump cannot adapt to the application in the acid-base special chemical industry exists, and technical innovation is performed on the basis of the existing plastic gear pump aiming at the situation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastic gear pump to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a plastic gear pump, includes polyphenylene sulfide front bezel and cavity, the inside of polyphenylene sulfide front bezel is provided with the polyether ether ketone bush, hexagon socket head cap screw is installed to the top of polyphenylene sulfide front bezel, 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 bezel, the inside of cavity is provided with the locating pin all around, the inside of cavity is provided with driven gear, and driven gear's top installs the driving gear, the polyphenylene sulfide back seat is installed to one side of cavity, and installs the cage in 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 coiled head cross screw, the inside of cage is provided with the plastic permanent magnet rotor of.

Preferably, the polyphenylene sulfide front seat is in threaded connection with the cavity and the polyphenylene sulfide rear seat respectively through socket head cap screws, and the socket head cap screws penetrate through the interior of the polyphenylene sulfide front seat, the interior of the cavity and the edge of the other side of the polyphenylene sulfide rear seat respectively.

Preferably, the driven gear and the driving gear are both made of polyether-ether-ketone, and the driven gear and the driving gear are in meshing transmission.

Preferably, the positioning pins are made of zirconia and are uniformly distributed along the periphery of the cavity.

Preferably, the fully plastic-coated permanent magnet rotor is made of polyphenylene sulfide fully plastic-coated permanent magnet, and the horizontal center line of the fully plastic-coated permanent magnet rotor and the horizontal center line of the polyphenylene sulfide rear seat are overlapped with each other.

Preferably, the isolation cover is made of a corrosion-resistant titanium alloy material, and the isolation cover and the polyphenylene sulfide rear seat form a detachable structure through the matching between the pan head cross screw and the pressing plate.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model is provided with the inner hexagon screw, and can effectively provide stable fixation for the connection among the polyphenylene sulfide front seat, the cavity and the polyphenylene sulfide rear seat through the inner hexagon screw, thereby ensuring the normal work of the gear pump;

2. the utility model discloses being provided with the locating pin, can effectually providing a plurality of hookup locations for the fixed of cavity through the locating pin to can effectually improve the stability that cavity and gear pump are connected, be provided with the cage, can effectually separate outside object and the subassembly of gear pump inside through the cage, and corrosion-resistant titanium alloy material can effectually improve the anti-corrosion performance of gear pump;

3. the utility model discloses be provided with driven gear and driving gear, the power transmission efficiency that can effectual improvement gear pump through the cooperation between driven gear and the driving gear to can the effectual power loss that reduces the gear pump, and polyether ether ketone has physical and chemical properties such as high temperature resistant, resistant chemical corrosion, thereby can the effectual corrosion resisting property who improves driven gear and driving gear.

Drawings

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

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

fig. 3 is a schematic cross-sectional view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a polyphenylene sulfide front seat; 2. a perfluororubber O-ring; 3. a polyetheretherketone liner; 4. a pan head cross screw; 5. a fully plastic-coated permanent magnet rotor; 6. a polyphenylene sulfide rear seat; 7. a socket head cap screw; 8. an isolation cover; 9. pressing a plate; 10. a driven gear; 11. positioning pins; 12. a driving gear; 13. a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a plastic gear pump comprises a polyphenylene sulfide front seat 1 and a cavity 13, wherein a polyether ether ketone bush 3 is arranged inside the polyphenylene sulfide front seat 1, an inner hexagonal screw 7 is arranged above the polyphenylene sulfide front seat 1, perfluorinated rubber O-rings 2 are arranged on the upper side and the lower side of the cavity 13, the cavity 13 is positioned on one side of the polyphenylene sulfide front seat 1, the polyphenylene sulfide front seat 1 is in threaded connection with the cavity 13 and a polyphenylene sulfide rear seat 6 through the inner hexagonal screw 7, the inner hexagonal screw 7 penetrates through the interior of the polyphenylene sulfide front seat 1, the interior of the cavity 13 and the edge of the other side of the polyphenylene sulfide rear seat 6 respectively, and the inner hexagonal screw 7 can effectively provide stable fixation for connection among the polyphenylene sulfide front seat 1, the cavity 13 and the polyphenylene sulfide rear seat 6, so that normal work of the gear pump can be guaranteed;

positioning pins 11 are arranged around the inner part of the cavity 13, the positioning pins 11 are made of zirconia, the positioning pins 11 are uniformly distributed along the periphery of the cavity 13, a plurality of connecting positions can be effectively provided for fixing the cavity 13 through the positioning pins 11, thereby effectively improving the stability of the connection between the cavity 13 and the gear pump, the driven gear 10 is arranged in the cavity 13, a driving gear 12 is arranged above the driven gear 10, the driven gear 10 and the driving gear 12 are both made of polyether ether ketone, the driven gear 10 and the driving gear 12 are in meshing transmission, the power transmission efficiency of the gear pump can be effectively improved by the cooperation between the driven gear 10 and the driving gear 12, therefore, the power loss of the gear pump can be effectively reduced, and the polyether-ether-ketone has the physical and chemical properties of high temperature resistance, chemical corrosion resistance and the like, so that the corrosion resistance of the driven gear 10 and the driving gear 12 can be effectively improved;

one side of the cavity 13 is provided with a polyphenylene sulfide rear seat 6, one side of the polyphenylene sulfide rear seat 6 is provided with an isolation cover 8, the fully plastic-coated permanent magnet rotor 5 is made of polyphenylene sulfide fully plastic-coated permanent magnet, the horizontal central line of the fully-plastic-coated permanent magnet rotor 5 and the horizontal central line of the polyphenylene sulfide rear seat 6 are superposed with each other, the upper side and the lower side of the isolation cover 8 are both provided with pressing plates 9, the isolation cover 8 is made of corrosion-resistant titanium alloy material, and the isolation cover 8 and the polyphenylene sulfide rear seat 6 form a detachable structure through the matching between the pan head cross screw 4 and the pressure plate 9, external objects can be effectively isolated from components in the gear pump through the isolation cover 8, and the corrosion-resistant titanium alloy material can effectively improve the corrosion-resistant performance of the gear pump, the pan head cross screw 4 is arranged in the pressing plate 9, and the full-plastic-coated permanent magnet rotor 5 is arranged in the isolation cover 8.

The working principle is as follows: when the plastic gear pump is used, firstly, the polyether-ether-ketone bush 3 is respectively arranged in the polyphenylene sulfide front seat 1 and the polyphenylene sulfide rear seat 6; secondly, the polyphenylene sulfide front seat 1, the cavity 13 and the polyphenylene sulfide rear seat 6 are positioned and fixed through positioning pins 11, the cavity 13, the polyphenylene sulfide front seat 1, the cavity 13 and the polyphenylene sulfide rear seat 6 are provided with perfluororubber O-shaped rings 2 for sealing, and are locked and fixed through hexagon socket head cap screws 7, then, a fully plastic-coated permanent magnet rotor 5 is arranged on a connecting shaft of a driving gear 12, and then an isolation cover 8 is arranged;

and finally, the polyphenylene sulfide rear seat 6 and the isolation cover 8 are provided with a perfluororubber O-shaped ring 2 for sealing, and are compressed through the matching between the pressing plate 9 and the pan head cross screw 4, so that the working principle of the plastic gear pump is realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a plastic gear pump, includes polyphenylene sulfide front bezel (1) and cavity (13), its characterized in that: the polyphenylene sulfide front seat is characterized in that a polyether-ether-ketone bushing (3) is arranged inside the polyphenylene sulfide front seat (1), an inner hexagon screw (7) is installed above the polyphenylene sulfide front seat (1), perfluororubber O-shaped rings (2) are installed on the upper side and the lower side of a cavity (13), the cavity (13) is located on one side of the polyphenylene sulfide front seat (1), positioning pins (11) are arranged on the periphery of the inside of the cavity (13), a driven gear (10) is arranged inside the cavity (13), a driving gear (12) is installed above the driven gear (10), a polyphenylene sulfide rear seat (6) is installed on one side of the cavity (13), an isolation cover (8) is installed on one side of the polyphenylene sulfide rear seat (6), pressing plates (9) are installed on the upper side and the lower side of the isolation cover (8), and a pan head cross screw (4) is arranged inside, and a fully plastic-coated permanent magnet rotor (5) is arranged in the isolation cover (8).

2. A plastic gear pump as set forth in claim 1, wherein: the polyphenylene sulfide front seat (1) is in threaded connection with the cavity (13) and the polyphenylene sulfide rear seat (6) through the inner hexagon screws (7), and the inner hexagon screws (7) penetrate through the interior of the polyphenylene sulfide front seat (1), the interior of the cavity (13) and the edge of the other side of the polyphenylene sulfide rear seat (6) respectively.

3. A plastic gear pump as set forth in claim 1, wherein: the driven gear (10) and the driving gear (12) are both made of polyether-ether-ketone, and the driven gear (10) and the driving gear (12) are in meshing transmission.

4. A plastic gear pump as set forth in claim 1, wherein: the positioning pins (11) are made of zirconia, and the positioning pins (11) are uniformly distributed along the periphery of the cavity (13).

5. A plastic gear pump as set forth in claim 1, wherein: the fully plastic-coated permanent magnet rotor (5) is made of polyphenylene sulfide fully plastic-coated permanent magnet, and the horizontal center line of the fully plastic-coated permanent magnet rotor (5) and the horizontal center line of the polyphenylene sulfide rear seat (6) are superposed with each other.

6. A plastic gear pump as set forth in claim 1, wherein: the isolation cover (8) is made of corrosion-resistant titanium alloy materials, and the isolation cover (8) forms a detachable structure with the polyphenylene sulfide rear seat (6) through the cooperation between the pan head cross screw (4) and the pressing plate (9).