CN218678647U

CN218678647U - Urea pump motor

Info

Publication number: CN218678647U
Application number: CN202223195912.8U
Authority: CN
Inventors: 黄爱勇
Original assignee: Wuxi Borristone Technology Co ltd
Current assignee: Wuxi Borristone Technology Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-03-21
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a urea pump motor, including the motor main part, the top of main part is provided with the top cap, is provided with contact pin mouth and oiling mouth on the top cap, is provided with the tube-shape extension on the interior roof of top cap, and the extension intercommunication is passed through in the inboard and the outside of top cap, and the extension inboard is provided with flexible diaphragm, and diaphragm sealing connection is inboard at the extension. The utility model discloses inside and outside pressure differential of extension balanced motor of intercommunication urea pump motor, the diaphragm plays the effect of sealed extension, and flexible can make the extension guarantee sealed effect when adjusting pressure differential through the activity of diaphragm, through the interior outside pressure differential of accommodate motor, has reduced the probability of the phenomenon that the motor takes place the oil impregnate, has promoted the stability and the reliability of motor work.

Description

Urea pump motor

Technical Field

The utility model belongs to the technical field of the urea pump, especially, relate to a urea pump motor.

Background

The urea pump is an important component of the urea solution injection metering system, and has the main functions of pumping the urea solution in the urea tank, keeping a certain pressure and then conveying the urea solution to the injection unit to meet the requirements of the injection metering system on flow and pressure.

Urea pump usually provides power through the urea pump motor, realize the injection of urea, current urea pump motor is as shown in figure 1, usually including motor main part and top cap, be provided with the needle mouth that is used for connecting external lines on the top cap and be used for the oiling mouth, when the motor uses, when meetting high temperature environment or high altitude low pressure condition, motor internal pressure is greater than external pressure and produces pressure differential, the inside oil of motor oozes from the junction under the pressure differential effect, lead to the inside oil mass of motor not enough, influence the normal use of motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a urea pump motor to solve the technical problem that the oil impregnate easily takes place for current urea pump motor under high temperature and high altitude low pressure condition.

In order to achieve the above object, the specific technical solution of the urea pump motor of the present invention is as follows:

the utility model provides a urea pump motor, includes the motor main part, the top of main part is provided with the top cap, be provided with contact pin mouth and oiling mouth on the top cap, be provided with the tube-shape extension on the interior roof of top cap, the inboard and the outside of top cap are passed through the extension intercommunication, the extension inboard is provided with flexible diaphragm, diaphragm sealing connection be in the extension is inboard.

Preferably, in order to prevent the diaphragm from being adsorbed inside the main body and influencing the normal operation of the motor, the top end of the extension part and the top cover are integrally formed, the bottom end of the extension part is sealed and arranged, and a plurality of through holes are uniformly distributed at the bottom end of the extension part.

Preferably, in order to improve the stability of the connection between the extension part and the top cover, a reinforcing rib is further connected between the extension part and the top cover.

Preferably, in order to facilitate the movement of the diaphragm in the extension portion, the diaphragm is of a cylindrical structure, the first end of the diaphragm is arranged in a closed manner, the second end of the diaphragm is arranged in an open manner, and the second end of the diaphragm is detachably connected with the top end of the extension portion.

Preferably, in order to realize replacement of the septum, a support ring is circumferentially arranged on the inner side wall of the top end of the extension part, a threaded sleeve is arranged on one side of the support ring, which is adjacent to the needle opening, the outer peripheral surface of the threaded sleeve is in threaded connection with the inner peripheral surface of the extension part, and the edge of the second end opening of the septum is circumferentially arranged between the support ring and the threaded sleeve.

Preferably, in order to improve the sealing performance between the diaphragm and the extension part, an annular groove is circumferentially arranged on the side surface of the support ring adjacent to the threaded sleeve, and a sealing ring is arranged in the annular groove.

Preferably, in order to improve the firmness of the installation of the diaphragm, a fastening ring is further arranged between the threaded sleeve and the support ring, an ejector pin is arranged on the side face of one side of the fastening ring, blind holes are formed in the side face, adjacent to the annular groove, of the support ring, the number of the ejector pins is equal to that of the blind holes, the ejector pins are in one-to-one correspondence with the blind holes, the ejector pins are matched with the blind holes, and the ejector pins penetrate through the diaphragm and then are inserted into the blind holes.

Preferably, in order to provide the membrane with better elasticity and softness, the membrane is a rubber membrane.

Preferably, in order to enlarge a movable range of the diaphragm to offset a pressure difference between the inside and the outside of the motor, a length of the diaphragm is larger than a length of the extension portion, and the diaphragm is folded and arranged inside the extension portion.

The utility model discloses a urea pump motor has following advantage: the extension part for communicating the inside and the outside of the urea pump motor can balance the pressure difference between the inside and the outside of the motor, the diaphragm plays a role in sealing the extension part, the extension part can ensure the sealing effect while adjusting the pressure difference through the movable extension of the diaphragm, the probability of oil leakage of the motor is reduced by adjusting the pressure difference between the inside and the outside of the motor, and the working stability and the working reliability of the motor are improved.

Drawings

FIG. 1 is a schematic structural diagram of a urea pump motor according to the present invention;

fig. 2 is a schematic structural view of the top cover of the present invention;

fig. 3 is a schematic view of a connection structure of the extension part and the diaphragm of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

the notation in the figure is: 1. a main body; 2. a top cover; 3. a needle insertion opening; 4. an oil filling port; 5. an extension portion; 6. reinforcing ribs; 7. a through hole; 8. a diaphragm; 9. a threaded sleeve; 10. a fastening ring; 11. an annular groove; 12. a seal ring; 13. a support ring; 14. blind holes; 15. and (4) a thimble.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings.

A urea pump motor comprises a motor main body 1, as shown in figure 1, a top cover 2 is arranged on the top cover of the main body 1, a pin port 3 and an oil filling port 4 are arranged on the top cover 2, a pin is arranged in the pin port 3 and epoxy resin is injected to realize sealing, the pin port 3 is used for connecting an external plug and is used for supplying power to the motor and realizing electric control of the motor, a sealing cover is arranged on the oil filling port 4, when the motor is in a high-temperature environment or a high-altitude low-pressure environment, the air pressure in the motor is larger than the external air pressure, so that oil leakage easily occurs at the sealing part of the motor, as shown in figures 2 and 3, a cylindrical extension part 5 is arranged on the inner top wall of the top cover 2, the top end of the extension part 5 and the top cover 2 are integrally formed, a reinforcing rib 6 is further connected between the extension part 5 and the top cover 2 and used for reinforcing the extension part 5, the bottom end of the extension part 5 is sealed, and a plurality of uniformly distributed through holes 7 are formed in the bottom end, so that the inner side and the outer side of the top cover 2 are communicated through the extension part 5; set up flexible diaphragm 8 in extension 5 inboards, 8 optional rubber materials of diaphragm, make it still have better elasticity when having certain compliance, diaphragm 8 is the tubular structure, diaphragm 8's first end seals the setting, the uncovered setting of second end, diaphragm 8's first end open-ended border and the inside wall sealing connection on extension top, make diaphragm 8 can realize the sealing to extension 5, diaphragm 8's length is greater than extension 5's length, diaphragm 8 is folding to be set up in extension 5 inboardly, make diaphragm 8 can form a great airtight space, in order to hold more gas, in order to enlarge the scope that the motor adjusted to the pressure differential.

When the internal pressure of the motor is greater than the external pressure, the gas inside the motor can be discharged through the extension part 5, so that the internal and external pressure difference of the motor is eliminated, meanwhile, the diaphragm 8 is used for sealing the extension part 5, the integral sealing performance of the motor is ensured, the diaphragm 8 can move towards the outside of the motor through the gas discharged by the extension part 5, and a space for containing the gas is formed.

The diaphragm 8 has a limited service life, and needs to be maintained and replaced in time to ensure the reliability of the operation thereof, as shown in fig. 4, a support ring 13 is circumferentially arranged on the inner side wall of the top end of the extension portion 5, a threaded sleeve 9 is arranged on one side of the support ring 13 adjacent to the pin port 3, the outer peripheral surface of the threaded sleeve 9 is in threaded connection with the inner peripheral surface of the extension portion 5, the edge of the second end opening of the diaphragm 8 is circumferentially arranged between the support ring 13 and the threaded sleeve 9, an annular groove 11 is circumferentially arranged on the side of the support ring 13 adjacent to the threaded sleeve 9, a seal ring 12 is arranged in the annular groove 11, a fastening ring 10 is further arranged between the threaded sleeve 9 and the support ring 13, a thimble 15 is arranged on one side of the fastening ring 10, blind holes 14 are arranged on the side of the support ring 13 adjacent to the annular groove 11, the thimbles 15 and the blind holes 14 are equal in number and correspond one-to one, the thimbles 15 are matched with the blind holes 14, and the thimbles 15 are inserted into the blind holes 14 after penetrating through the diaphragm 8.

During the use, thimble 15 runs through the border of 8 openings of diaphragm, can prevent effectively that diaphragm 8 from taking place to drop, sealing washer 12 promotes the sealed effect between diaphragm 8 and the support ring 13, in order to guarantee the sealed of diaphragm 8 to extension 5, during the dismouting, only need screw sleeve 9 of unscrewing, later take off tighrening ring 10 and can realize the dismantlement of diaphragm 8, then reverse step is carried out during the installation, the convenient degree that diaphragm 8 changed has been promoted, simultaneously through the setting of thimble 15, can fix 8 openings of diaphragm's border circumference on tighrening ring 10 in advance, later be connected tighrening ring 10 and support ring 13, promote the convenient degree that diaphragm 8 installed in place.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a urea pump motor, includes motor main part (1), the top of main part (1) is provided with top cap (2), be provided with contact pin mouth (3) and oiling mouth (4) on top cap (2), its characterized in that:

the inner top wall of the top cover (2) is provided with a cylindrical extension part (5), the inner side and the outer side of the top cover (2) are communicated through the extension part (5), the inner side of the extension part (5) is provided with a flexible diaphragm (8), and the diaphragm (8) is connected to the inner side of the extension part (5) in a sealing mode.

2. The urea pump motor according to claim 1, wherein the top end of the extension portion (5) is integrally formed with the top cover (2), the bottom end of the extension portion (5) is closed, and a plurality of through holes (7) are uniformly distributed at the bottom end of the extension portion (5).

3. Urea pump motor according to claim 1, characterized in that a reinforcement rib (6) is also connected between the extension (5) and the top cover (2).

4. A urea pump motor according to claim 1, characterized in that said diaphragm (8) is a cylindrical structure, said diaphragm (8) is closed at a first end and open at a second end, and said second end of said diaphragm (8) is detachably connected to the top end of said extension (5).

5. Urea pump motor according to claim 4, characterized in that a support ring (13) is arranged circumferentially on the inside wall at the top end of the extension (5), that a threaded sleeve (9) is arranged on the side of the support ring (13) adjacent to the needle opening (3), that the outer circumference of the threaded sleeve (9) is in threaded connection with the inner circumference of the extension (5), and that the rim of the second end opening of the diaphragm (8) is arranged circumferentially between the support ring (13) and the threaded sleeve (9).

6. Urea pump motor according to claim 5, characterized in that the support ring (13) is provided with an annular groove (11) circumferentially adjacent to the side of the threaded sleeve (9), a sealing ring (12) being provided in the annular groove (11).

7. The urea pump motor according to claim 6, wherein a fastening ring (10) is further disposed between the threaded sleeve (9) and the support ring (13), a side surface of one side of the fastening ring (10) is provided with ejector pins (15), a side surface of the support ring (13) adjacent to the annular groove (11) is provided with blind holes (14), the number of the ejector pins (15) is equal to that of the blind holes (14) and corresponds to that of the blind holes (14), the ejector pins (15) are matched with the blind holes (14), and the ejector pins (15) penetrate through the diaphragm (8) and then are inserted into the blind holes (14).

8. Urea pump motor according to claim 4, characterized in that the membrane (8) is a rubber membrane (8).

9. Urea pump motor according to claim 8, characterized in that the length of the membrane (8) is larger than the length of the extension (5), the membrane (8) being arranged folded inside the extension (5).