CN216741798U

CN216741798U - Electric pump filter with filtering function

Info

Publication number: CN216741798U
Application number: CN202220370285.8U
Authority: CN
Inventors: 黄兴明; 秦根华; 范新军; 黄小虎; 马业存
Original assignee: Anhui Weil Low Carbon Technology Co ltd
Current assignee: Anhui Weil Low Carbon Technology Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-06-14
Anticipated expiration: 2032-02-23

Abstract

The utility model discloses an electric pump filter with a filtering function, which comprises an upper base body, a tank body and an electric pump assembly, wherein a filter element assembly is arranged in the tank body, a transverse pump oil outlet cavity is formed in the side wall of the upper base body, the electric pump assembly is arranged in the pump oil outlet cavity, a pump oil inlet cavity is arranged in the middle of the inner part of the upper base body, one end of the pump oil inlet cavity is communicated with the side wall of the pump oil outlet cavity, the other end of the pump oil inlet cavity is connected with the middle of the filter element assembly arranged in the filter tank, a one-way valve is arranged at the communication position of the filter element assembly and the pump oil inlet cavity, the electric pump assembly comprises an electric pump body, a plastic bracket, a pump body base and a wiring port, the electric pump filter has the characteristics of reasonable design, reliable performance, low cost, good filtering effect and the like on the whole, and can efficiently complete the fuel filtering function of an automobile fuel common rail system, has high practicability and popularization value.

Description

Electric pump filter with filtering function

Technical Field

The utility model relates to the technical field of filters, in particular to an electric pump filter with a filtering function.

Background

The common rail system is a closed loop system consisting of a high pressure oil pump, a pressure sensor and an ECU, and is an oil supply method which completely separates the generation of injection pressure and the injection process from each other. The high-pressure fuel oil is conveyed to the public oil supply pipe by the high-pressure oil pump, and the oil pressure in the public oil supply pipe is accurately controlled, so that the pressure of the high-pressure oil pipe is irrelevant to the rotating speed of an engine, and the change of the oil supply pressure of the diesel engine along with the rotating speed of the engine can be greatly reduced, thereby reducing the defects of the traditional diesel engine.

At present, diesel engines in the market are mostly negative pressure systems, and along with the application of the national six-new common rail system, because the host computer is arranged, the filter position, pipeline length and the like all have certain difference in different vehicle systems, therefore, the difficult starting phenomenon of more vehicles has appeared in the market, the electric pump fires oil filter and can solve these problems to a certain extent, but the electric pump itself can't satisfy the requirement of common rail system because of the cleanliness, so can often produce the harm to high-precision components such as oil delivery pump and the fuel sprayer of common rail system, thereby influence the stability of common rail system.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: provides an electric pump filter with a filtering function to solve the defects.

In order to achieve the above purpose, the utility model provides the following technical scheme:

an electric pump filter with a filtering function comprises an upper base body, a tank body and an electric pump assembly, wherein a filter element assembly is arranged inside the tank body, the upper base body is connected with the tank body through a threaded interface, a transverse pump oil outlet cavity is formed in the side wall of the upper base body, the electric pump assembly is arranged in the pump oil outlet cavity, a pump oil inlet cavity is formed in the middle of the inside of the upper base body, one end of the pump oil inlet cavity is communicated to the side wall of the pump oil outlet cavity, the other end of the pump oil inlet cavity is connected with the middle of the filter element assembly arranged inside the filter tank, a one-way valve is arranged at the communication position of the filter element assembly and the pump oil inlet cavity, the one-way valve only allows fuel oil to flow to the pump oil inlet cavity end from the filter element assembly end, the filter element assembly divides the inside of the tank body into a dirty oil side positioned outside the filter material and a clean oil side positioned inside the filter material, and the clean oil side is communicated with the pump oil inlet cavity after passing through the one-way valve, the oil pump is characterized in that the upper seat body is provided with an oil inlet channel and an oil outlet channel, the oil inlet channel is communicated with the dirty oil side, the oil outlet channel is communicated with the pump oil outlet cavity, the electric pump assembly comprises an electric pump body, a plastic support, a pump body seat and a wiring port, the electric pump body is arranged in the plastic support, the plastic support comprises a support rib, the support rib is in net distribution, so that a plurality of hollowed parts are formed on the surface of the support rib, the plastic support is fixed on one side of the pump body seat, the wiring port is arranged on the other side of the pump body seat, the support rib is provided with a circle of positioning steps on the same axial horizontal plane, the positioning steps divide the support body of the plastic support into two parts with unequal circumferential radiuses, the circumferential radius of the part of the support body of the plastic support far away from the pump body seat is smaller than the circumferential radius of the part of the support body close to the pump body seat, and the inner wall of the pump oil outlet cavity is arranged to form a matched ladder shape with the plastic support, the two ends of the outer wall of the plastic support, which are far away from the pump body seat and close to the pump body seat, are respectively provided with a first sealing ring and a second sealing ring, the pump oil inlet cavity is communicated to the hollow-out part on the plastic support between the first sealing ring and the second sealing ring, a filtering nylon mesh cloth is arranged in the hollow-out part, and the oil outlet channel is communicated with the pump oil outlet cavity outside the closed space formed by the first sealing ring and the second sealing ring.

Preferably, hickey includes screw thread, O type circle groove, end ear, bottom plate, the screw thread is provided with the twice that can close each other soon, and the twice can close each other soon the screw thread sets up respectively on the jar mouthful lateral wall of the jar body and on the inner wall of upper base body, O type circle groove is the cyclic annular plate body of the mutual parallel arrangement of two circles, O type circle groove sets up the below of screw thread on the jar body, O type inslot is equipped with O type circle, the bottom plate sets up on the lateral wall of the jar body of O type circle groove below, end ear sets up the bottom opening part at the upper base body, end ear and bottom plate are two cyclic annular plate bodies that the excircle diameter equals.

Preferably, a transition surface between two steps of the positioning step is an inclined surface.

Preferably, the filtering effect of the filtering nylon mesh cloth meets the requirement of the common rail system on the cleanliness of parts, and the filtering nylon mesh cloth and the plastic support are subjected to injection molding together.

The utility model has the beneficial effects that:

the electric pump filter with the filtering function can effectively solve the problem that a six-country light fuel vehicle is difficult to start, the electric pump assembly has filtering effect, the cleanliness of the electric pump assembly is improved, and a high-pressure common rail system can be better protected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1: the utility model has a structure schematic diagram;

FIG. 2: the structure of the electric pump assembly is schematic;

FIG. 3: the utility model is a structural schematic diagram of a threaded interface;

description of reference numerals:

1. an upper base body; 11. pumping oil into the cavity; 12. pumping oil out of the cavity; 2. a tank body; 21. a clean oil side; 22. dirty oil side; 3. an electric pump assembly; 31. an electric pump body; 32. a plastic support; 321. a bracket rib; 322. hollowing out; 323. positioning a step; 33. a first seal ring; 34. a second seal ring; 35. a pump body seat; 36. and a wiring port.

Detailed Description

The following description of the embodiments of the present invention is made with reference to the accompanying drawings 1-3:

as shown in figures 1-3, an electric pump filter with a filtering function comprises an upper seat body 1, a tank body 2 and an electric pump assembly 3, wherein a filter element assembly 5 is arranged inside the tank body 2, the upper seat body 1 is connected with the tank body 2 through a threaded interface 6, the threaded interface 6 comprises a thread 61, an O-shaped ring groove 62, a bottom lug 63 and a bottom plate 64, the thread 61 is provided with two mutually screwed threads, the two mutually screwed threads 61 are respectively arranged on the outer side wall of a tank opening of the tank body 2 and the inner wall of the upper seat body 1, the O-shaped ring groove 62 is two annular plate bodies which are arranged in parallel, the O-shaped ring groove 62 is arranged below the thread 61 on the tank body 2, an O-shaped ring is arranged in the O-shaped ring groove 62, the bottom plate 64 is arranged on the outer side wall of the tank body 2 below the O-shaped ring groove 62, the bottom lug 63 is arranged at the bottom end of the upper seat body 1, the bottom lug 63 and the bottom plate 64 are two annular plate bodies with the same diameter of the outer circle, when the upper seat body 1 and the tank body 2 are screwed, the tank body 2 can continuously sink towards the inside of the upper seat body 1 until the bottom lug 63 and the bottom plate 64 are attached to each other, so that the maximum screwing depth is reached, and at the moment, the inner wall of the upper seat body 1 is tightly pressed on an O-shaped ring arranged in the O-shaped ring groove 62, so that the sealing connection between the upper seat body 1 and the tank body 2 is realized.

It has a horizontal pump oil to go out chamber 12 to open on the lateral wall of upper base body 1, electric pump assembly 3 sets up in pump oil goes out chamber 12, the centre of upper base body 1 inside is equipped with a pump oil and goes into chamber 11, the pump oil goes into the one end intercommunication of chamber 11 and goes out on the lateral wall of chamber 12 to the pump oil, the other end that pump oil goes into chamber 11 links to each other with the centre that sets up filter element group spare 5 inside filter cartridge 2, filter element group spare 5 and pump oil go into the intercommunication department of chamber 11 and be equipped with check valve 4, check valve 4 only allows the fuel to flow to pump oil from filter element group spare 5 end and go into chamber 11 end, filter element group spare 5 falls into the inside of jar body 2 and is located the outside dirty oil side 22 of filter element group spare filter media and is located the inside clean oil side 21 of filter media, clean oil side 21 is gone into chamber 11 intercommunication with pump oil after through check valve 4, be equipped with oil inlet channel and oil outlet on the upper base body 1, oil inlet channel and dirty oil side 22 communicate each other, oil outlet channel and pump oil go out chamber 12 and be linked together.

The electric pump assembly 3 comprises an electric pump body 31, a plastic support 32, a pump body seat 35 and a wiring port 36, wherein the electric pump body 31 is arranged inside the plastic support 32, the plastic support 32 comprises support ribs 321, the support ribs 321 are distributed in a net shape, so that a plurality of hollowed-out parts 322 are formed on the surface of the support ribs 321, the plastic support 32 is fixed on one side of the pump body seat 35, the wiring port 36 is arranged on the other side of the pump body seat 35, the wiring port 36 is communicated with an external power supply and an intelligent control unit, a circle of positioning steps 323 are arranged on the support ribs 321 on the same axial horizontal plane, the frame body of the plastic support 32 is divided into two parts with unequal circumferential radiuses by the positioning steps 323, the circumferential radius of the part of the frame body of the plastic support 32 far away from the pump body seat 35 is smaller than the circumferential radius of the part of the frame body near the pump body seat 35, and the inner wall of the pump oil outlet cavity 12 is arranged to form a matched ladder shape with the plastic support 32, the positioning step 323 can form a limit to the insertion depth of the electric pump assembly 3 when the electric pump assembly 3 is inserted into the pump oil outlet chamber 12, the transition surface between the two steps of the positioning step 323 is an inclined surface, also can reduce holistic stress concentration when realizing supplementary centering, thereby guarantee electric pump assembly 3's positioning accuracy, be provided with first sealing washer 33 and second sealing washer 34 respectively at the both ends of keeping away from pump body seat 35 and being close to pump body seat 35 on the outer wall of plastics support 32, pump oil goes into chamber 11 and communicates to fretwork 322 department on the plastics support 32 between first sealing washer 33 and the second sealing washer 34, be equipped with in the fretwork 322 and filter the nylon screen cloth, the filter effect of filtering the nylon screen cloth satisfies the cleanliness requirement of common rail system to spare part, filter the nylon screen cloth and plastics support 32 injection moulding together, it goes out chamber 12 with the pump oil in the airtight space outside that first sealing washer 33 and second sealing washer 34 constitute to go out the oil drain way and is linked together.

The utility model relates to an electric pump filter with a filtering function, in the actual working process, fuel oil enters the filter from an upper oil inlet channel of an upper seat body 1, then reaches the dirty oil side 22, reaches the clean oil side 21 positioned in the filter material after being filtered by the filter element assembly 5, then enters the pump oil inlet cavity 11 through the one-way valve 4, then enters the pump oil outlet cavity 12 positioned between the first sealing ring 33 and the second sealing ring 34 from the pump oil inlet cavity 11, the fuel oil flows to the pump oil outlet cavity 12 through the electric pump body 31 after being filtered again by the hollow 322 through the filtering nylon mesh cloth and finally flows out of the filter from the oil outlet passage, thereby completing all filtering processes of the fuel oil, the fixing between the electric pump assembly 3 and the pump oil outlet cavity 12 can be by means of frictional resistance between the first and

second sealing rings

33 and 34 and the inner wall of the pump oil outlet cavity 12, or by means of screw fixing, or by means of gluing, etc.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above embodiments, and it is within the scope of the utility model to adopt the method concept and technical solution of the utility model to make such insubstantial modifications, or to directly apply the concept and technical solution of the utility model to other applications without any modification.

Claims

1. The electric pump filter with the filtering function is characterized by comprising an upper base body (1), a tank body (2) and an electric pump assembly (3), wherein a filter element assembly (5) is arranged inside the tank body (2), the upper base body (1) is connected with the tank body (2) through a threaded interface (6), a transverse pump oil outlet cavity (12) is formed in the side wall of the upper base body (1), the electric pump assembly (3) is arranged in the pump oil outlet cavity (12), a pump oil inlet cavity (11) is formed in the middle of the inside of the upper base body (1), one end of the pump oil inlet cavity (11) is communicated to the side wall of the pump oil outlet cavity (12), the other end of the pump oil inlet cavity (11) is connected with the middle of the filter element assembly (5) arranged inside the tank body (2), a one-way valve (4) is arranged at the communication position of the filter element assembly (5) and the pump oil inlet cavity (11), the check valve (4) only allows fuel to enter the chamber (11) end from filter element group spare (5) end flow direction pump oil, filter element group spare (5) falls into the inside of jar body (2) and lies in filter element group spare (5) filter media outside dirty oil side (22) and lie in filter media inside clean oil side (21), go into chamber (11) intercommunication with pump oil behind clean oil side (21) through check valve (4), be equipped with oil feed and play oil duct on upper base body (1), oil feed and dirty oil side (22) communicate each other, it goes out chamber (12) with pump oil to be linked together to go out the oil duct, electric pump subassembly (3) include the electric pump body (31), plastic support (32), pump body seat (35), wiring mouth (36), the electric pump body (31) set up the inside at plastic support (32), plastic support (32) include support muscle (321), thereby support muscle (321) are netted and distribute and form a plurality of fretwork (322) on the surface of support muscle (321), the plastic support (32) is fixed on one side of the pump body seat (35), the wiring port (36) is arranged on the other side of the pump body seat (35), a circle of positioning step (323) is arranged on the support rib (321) and on the same axial horizontal plane, the frame body of the plastic support (32) is divided into two parts with unequal circumferential radiuses by the positioning step (323), the frame body of the plastic support (32) is far away from the pump body seat (35), the circumferential radiuses of the partial frame body of the plastic support (32) are smaller than the circumferential radiuses of the partial frame body close to the pump body seat (35), the inner wall of the pump oil outlet cavity (12) is arranged to form a matched step shape with the plastic support (32), a first sealing ring (33) and a second sealing ring (34) are respectively arranged at two ends of the outer wall of the plastic support (32) far away from the pump body seat (35) and close to the pump body seat (35), and the pump oil inlet cavity (11) is communicated to the plastic support sealing ring (32) between the first sealing ring (33) and the second sealing ring (34) The hollow-out (322) department, be equipped with the filtration nylon screen cloth in the hollow-out (322), the pump oil that goes out the oil drain and the airtight space outside that first sealing washer (33) and second sealing washer (34) constitute goes out chamber (12) and is linked together.

2. The electric pump filter with filtering function of claim 1, the threaded interface (6) comprises a thread (61), an O-shaped ring groove (62), a bottom lug (63) and a bottom plate (64), the threads (61) are provided with two mutually screwed threads, the two mutually screwed threads (61) are respectively arranged on the outer side wall of the tank opening of the tank body (2) and the inner wall of the upper seat body (1), the O-shaped ring groove (62) is two rings of annular plate bodies which are arranged in parallel, the O-shaped ring groove (62) is arranged below the upper thread (61) of the tank body (2), an O-shaped ring is arranged in the O-shaped ring groove (62), the bottom plate (64) is arranged on the outer side wall of the tank body (2) below the O-shaped ring groove (62), the base lug (63) is arranged at the opening at the bottom end of the upper base body (1), and the base lug (63) and the bottom plate (64) are two annular plate bodies with the same excircle diameter.

3. The electric pump filter with filtering function of claim 1, wherein the transition surface between two steps of the positioning step (323) is an inclined surface.

4. The electric pump filter with the filtering function as recited in claim 1, wherein the filtering effect of the filtering nylon mesh cloth meets the cleanliness requirement of a common rail system on parts, and the filtering nylon mesh cloth is injection molded together with the plastic support (32).