CN214836797U

CN214836797U - Novel roller type diesel pump

Info

Publication number: CN214836797U
Application number: CN202120239492.5U
Authority: CN
Inventors: 池长风; 石少雷
Original assignee: Jiangsu Benteng Auto Tech Co ltd
Current assignee: Jiangsu Benteng Auto Tech Co ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-11-23
Anticipated expiration: 2031-01-28

Abstract

The utility model discloses a novel roller type diesel pump, which comprises a shell, a stator component, a pump body component, a rotor component and a valve seat component; one end of the rotor component is provided with a pentagonal counter bore; a coupler is arranged at one end of the pump body assembly, and a pentagonal connecting block is arranged at the end part of the coupler and assembled with a pentagonal counter bore of the rotor assembly; the end part of the pump body component is provided with a pump body end cover; the other end of the rotor assembly is provided with a valve seat assembly; a pressure release valve is arranged in the pump body component; oil discharge grooves are formed in two sides of the pressure release valve, and the pressure release valve 32 is communicated with the inside of the pressure release valve. The carbon commutator rotor and the conventional end face commutator motor are adopted in the structure, the manufacturing cost is low, the service life is prolonged, the pentagonal counter bore designed at the tail of the rotor is matched with the coupler, the assembly is convenient and rapid, the torque force is large, and the coaxiality is ensured; the pump cover bearing of the pump body assembly is pressed, so that the operation is flexible, and the performance is stable and reliable; the space is reduced by the structure of the pressure release valve; the oil discharge grooves on two sides can reduce the pressure relief and injection noise.

Description

Novel roller type diesel pump

Technical Field

The utility model relates to a fuel pump especially relates to a roller formula diesel pump.

Background

A review of the relevant prior art, and the problems and disadvantages of the prior art, and where possible, the reasons for such problems and disadvantages and the difficulties encountered in solving such problems, are presented.

In the automobile fuel pump industry, the roller type diesel pump is basically designed and formed by a pump body fixed shaft and a rotor hollow shaft, a hollow shaft rotor can only use a radial commutator, and the rotor has three defects: 1. the hollow shaft has poor strength, is easy to generate bending deformation, has extremely high requirements on the production control precision of parts and has higher manufacturing cost; 2. the radial commutator has few carbon commutators, no universal model and high cost; 3. the hollow shaft has deformation, resulting in rotor balance control deviation, pump core vibration and noise. The pump body dead axle and the end face commutator rotor leave the counter bore design after taking the shaft coupling to form (the counter bore is stayed to the shaft coupling, the rotor shaft does not stand out the head), this kind of rotor part is fairly high with process control, because of the disappearance rotor shaft location benchmark, rotor dynamic balance and commutator finish turning difficulty, easy out of control lead to manufacturing cost height, the quality is poor, and vibration noise is big.

Disclosure of Invention

The utility model discloses the purpose is: the improved product structure is provided, so that the assembly is convenient and rapid, the quality is stable and reliable, and the cost is reduced; the rotor uses a carbon commutator, so that the service life is prolonged; the armature rotor uses the conventional end face commutator motor to reduce cost, and control and reduce vibration and noise.

The technical scheme of the utility model is that: the pump comprises a shell, a stator assembly, a pump body assembly, a rotor assembly and a valve seat assembly; a stator component is arranged in the shell; a rotor assembly is arranged in the stator assembly; one end of the rotor component is provided with a pentagonal counter bore; a coupler is arranged at one end of the pump body assembly, and a pentagonal connecting block is arranged at the end part of the coupler and assembled with a pentagonal counter bore of the rotor assembly; the end part of the pump body component is provided with a pump body end cover; the other end of the rotor assembly is provided with a valve seat assembly; a pressure release valve is arranged in the pump body assembly; the oil discharge grooves are formed in the two sides of the pressure release valve, and the pressure release grooves are communicated with the inside of the pressure release valve, so that pressure release and injection noise can be reduced.

Preferably, the pressure relief valve comprises a pressure relief valve cavity, a steel ball and a spring; the pump cover, the pump ring and the through hole arranged on the cover plate of the pump body assembly form a pressure relief valve cavity; a steel ball is arranged in the pressure valve cavity; the spring pushes the steel ball to seal the sealing hole on the cover plate, and the space of the pressure release valve is reduced.

Preferably, the spring is a tower-shaped spring, and the tower-shaped spring controls the pressure to be stable; the sealing hole is decompressed by 90 degrees and is reliably matched and sealed with the steel ball.

Preferably, the pump body assembly is provided with a bearing at the matching position of the rotor shaft of the rotor assembly, and the pump body assembly is flexible in operation, concise in assembly and stable and reliable in performance.

Preferably, the bearing is a graphite bearing.

Preferably, the oil outlet external oil nozzle of the valve seat assembly does not rotate relative to the valve seat assembly.

Preferably, the stator assembly is assembled by magnetic steel, and is simple and firm.

Preferably, the pump body assembly is fastened by screws and is safe and reliable.

Preferably, a sealing ring is arranged between the casing and the pump body end cover and between the casing and the valve seat assembly, the sealing ring is an O-shaped sealing ring, radial sealing and axial sealing are guaranteed, and the fluororubber is resistant to high and low temperatures and resistant to gasoline and diesel media.

Preferably, the rotor assembly employs a carbon commutator.

The utility model has the advantages that:

1. using a carbon commutator rotor: the conventional end face commutator motor has low manufacturing cost and good balance, the rotor tail is provided with a pentagonal counter bore matched with the coupler, the assembly is convenient and quick, the pump rotor is driven, the torque force is large, the coupler hole is matched with the rotor shaft, and the coaxiality is ensured;

2. the pump body assembly is designed for pump cover bearing press mounting, and is flexible in operation, concise in assembly and stable and reliable in performance;

3. the pressure relief valve is provided with oil discharge grooves on two sides, so that the pressure relief injection noise can be reduced, the pressure is controlled to be stable by using a tower-shaped spring, and a pressure relief valve hole is formed by combining a pump cover, a pump ring and a cover plate, so that the space is reduced;

4. the rotor uses the carbon commutator, improves life.

Drawings

The invention will be further described with reference to the following drawings and examples:

FIG. 1 is a schematic overall front view structure diagram of a novel roller-type diesel pump according to the present invention;

FIG. 2 is a schematic cross-sectional view of a novel roller-type diesel pump according to the present disclosure;

FIG. 3 is a left side view schematic diagram of a novel roller-type diesel pump according to the present disclosure;

FIG. 4 is a schematic diagram of a right-side view structure of a novel roller-type diesel pump according to the present disclosure;

FIG. 5 is a schematic structural diagram of a rotor assembly of a novel roller-type diesel pump according to the present invention;

FIG. 6 is a schematic perspective view of a rotor assembly of a novel roller-type diesel pump according to the present invention;

FIG. 7 is a right side view schematic structural view of a rotor assembly of a novel roller type diesel pump according to the present invention;

FIG. 8 is a left side view of the structure of the rotor assembly of the new roller-type diesel pump;

FIG. 9 is a schematic cross-sectional view of a pump body assembly of a rotor assembly of a novel roller-type diesel pump according to the present disclosure;

FIG. 10 is a schematic cross-sectional view of a valve seat assembly of a rotor assembly of a new type of roll-type diesel pump according to the present disclosure;

fig. 11 is a right-side structural view of a pump body assembly of a rotor assembly of a novel roller-type diesel pump according to the present disclosure;

FIG. 12 is a schematic cross-sectional view of a coupling of a rotor assembly of a novel roller diesel pump according to the present invention;

fig. 13 is a schematic right-view structural view of a coupling of a rotor assembly of a novel roller-type diesel pump according to the present invention;

fig. 14 is a schematic perspective view of a coupling of a rotor assembly of a novel roller-type diesel pump according to the present invention;

fig. 15 is a schematic structural view of a pump ring of a pump body assembly of a rotor assembly of a novel roller-type diesel pump according to the present invention;

Detailed Description

Example (b):

as shown in fig. 1-15, a novel roller-type diesel pump comprises a casing 1, a stator assembly 2, a pump body assembly 3, a rotor assembly 4 and a valve seat assembly 5; a stator assembly 2 is arranged in the machine shell 1; a rotor assembly 4 is arranged in the stator assembly 2; one end of the rotor assembly 4 is provided with a pentagonal counter bore 41; the pump body component is characterized in that a coupler 6 is arranged at one end of the pump body component 3, a pentagonal connecting block 61 is arranged at the end part of the coupler 6 and is assembled with a pentagonal counter bore 41 of the rotor component 4, the pentagonal counter bore 41 in the rotor component 4 is matched with the pentagonal connecting block 61 of the coupler 6, the assembly is convenient and rapid, the torque force is large, a coupler hole is matched with a rotor shaft, the coaxiality is ensured, the coupler 6 is made of PA66 (PA 66 is called polyamide 66 or nylon 66) material, the temperature resistance is realized, the deformation is avoided, the toughness is good, the torque force is strong, the coupler 6 is provided with five clamping jaws 62, and the clamping jaws 62 are connected with the pump body component 3 to drive the pump body component 3; the end part of the pump body component 3 is provided with a pump body end cover 7; the pump body assembly 3 is fastened by screws 31; the other end of the rotor assembly 4 is provided with a valve seat assembly 5; a pressure release valve is arranged in the pump body component 3; the two sides of the pressure release valve are provided with oil discharge grooves 32, the inside of the pressure release grooves 32 is communicated with the pressure release valve, pressure release injection noise can be reduced, and the pressure is controlled stably by using a tower-shaped spring. The precision turning of the stator assembly steel pipe is used as a reference, the valve seat assembly, the rotor assembly and the pump body assembly are matched, and the coaxiality is guaranteed.

The pressure relief valve comprises a pressure relief valve cavity 33, a steel ball 34 and a spring 35; the pump cover 36, the pump ring 37 and the cover plate 38 of the pump body assembly 3 are provided with through holes to form a pressure relief valve cavity; a steel ball 34 is arranged in the pressure valve cavity 33; the spring 35 presses the steel ball 34 to seal the sealing hole 381 on the cover plate 38, and the structure of the pressure release valve reduces the space relative to an external pressure release valve; the cover plate 38 is a powder metallurgy cover plate; the spring 35 is a tower-shaped spring, and the pressure of the tower-shaped spring is controlled to be stable; the sealing hole 381 is a 90-degree pressure relief sealing hole and is reliably matched with the steel ball 34 for sealing; the oil drain groove 32 communicates with a relief valve chamber 33.

The bearing 39 is arranged at the matching position of the pump body component 3 and the rotor shaft of the rotor component 4, so that the pump body component 3 is flexible in operation, simple in assembly and stable and reliable in performance; the bearing 39 is a graphite bearing pressed into the pump body assembly, and has high wear resistance. The pump ring 37, the roller 371, the rotating tooth assembly 372 and the cover plate 38 in the pump body assembly 3 are made of powder metallurgy materials, and the roller pump is high in wear resistance and good in vacuum suction; rotor subassembly 4 adopts carbon commutator 42, improves life, and armature rotor uses conventional end face commutator motor reduce cost, control reduction vibration and noise.

The oil outlet external oil nozzle 51 of the valve seat assembly 5 and the valve seat assembly 5 do not rotate relatively; a carbon brush spring 53 is arranged on the electric brush 52 in the valve seat assembly 5, so that the elastic force is stably controlled; the brush frame 54 of the valve seat component 5 is made of high-performance thermoplastic resin plastic (called PPS material), so that the valve seat component is resistant to temperature and deformation and good in wear resistance; the brush 52 of the valve seat component 5 is welded with the diameter of the binding post, and is firm and reliable.

The stator assembly 2 adopts magnetic steel, and the assembly is simple and firm.

Two sealing rings 8 are arranged between the machine shell 1 and the pump body end cover 7 and between the machine shell and the valve seat assembly 5; the sealing ring 8 is an O-shaped sealing ring, radial sealing and axial sealing are guaranteed, and the sealing ring is made of fluororubber, resistant to high and low temperatures and resistant to gasoline and diesel media.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical concepts of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a novel roller formula diesel pump which characterized in that: the pump comprises a shell, a stator assembly, a pump body assembly, a rotor assembly and a valve seat assembly; a stator component is arranged in the shell; a rotor assembly is arranged in the stator assembly; one end of the rotor component is provided with a pentagonal counter bore; a coupler is arranged at one end of the pump body assembly, and a pentagonal connecting block is arranged at the end part of the coupler and assembled with a pentagonal counter bore of the rotor assembly; the end part of the pump body component is provided with a pump body end cover; the other end of the rotor assembly is provided with a valve seat assembly; a pressure release valve is arranged in the pump body assembly; and oil discharge grooves are formed in two sides of the pressure release valve, and the pressure release valve of each oil discharge groove is communicated with the inside of the pressure release valve.

2. The novel roller-type diesel pump as claimed in claim 1, wherein: the pressure relief valve comprises a pressure relief valve cavity, a steel ball and a spring; the pump cover, the pump ring and the through hole arranged on the cover plate of the pump body assembly form a pressure relief valve cavity; a steel ball is arranged in the pressure valve cavity; the spring pushes the steel ball to seal the sealing hole on the cover plate.

3. The novel roller-type diesel pump as set forth in claim 2, wherein: the spring is a tower-shaped spring; the sealing hole is decompressed by 90 degrees.

4. The novel roller-type diesel pump as claimed in claim 1, wherein: and a bearing is arranged at the matching position of the pump body assembly and the rotor shaft of the rotor assembly.

5. The novel roller-type diesel pump according to claim 4, wherein: the bearing is a graphite bearing.

6. The novel roller-type diesel pump as claimed in claim 1, wherein: the oil outlet external oil nozzle of the valve seat assembly does not rotate relative to the valve seat assembly.

7. The novel roller-type diesel pump as claimed in claim 1, wherein: the stator assembly is assembled by adopting magnetic steel.

8. The novel roller-type diesel pump as claimed in claim 1, wherein: and the pump body assembly is fastened by screws.

9. The novel roller-type diesel pump as claimed in claim 1, wherein: and a sealing ring is arranged between the casing and the pump body end cover and between the casing and the valve seat assembly.