CN114542456A - Can realize high-efficient gear pump of simple and easy installation - Google Patents
Can realize high-efficient gear pump of simple and easy installation Download PDFInfo
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- CN114542456A CN114542456A CN202210225292.3A CN202210225292A CN114542456A CN 114542456 A CN114542456 A CN 114542456A CN 202210225292 A CN202210225292 A CN 202210225292A CN 114542456 A CN114542456 A CN 114542456A
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- bearing seat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/04—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for reversible machines or pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0088—Lubrication
- F04C15/0092—Control systems for the circulation of the lubricant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a high-efficiency gear pump capable of realizing simple installation, which comprises a front bearing seat, a pump body, a rear bearing seat, a pump cover, an input gear, an output gear and four valves, wherein the front bearing seat, the pump body, the rear bearing seat and the pump cover are sequentially connected, the input gear and the output gear are installed in the pump body, a circular through hole A and a circular through hole B are formed in the pump cover, and the circular through hole A and the circular through hole B are respectively provided with two valves. The invention solves the problem that the oil suction and the oil discharge can be reliably realized under the condition that the input gear rotates clockwise or anticlockwise, greatly meets the requirements of various working conditions, improves the reliability of a working system, and has great market application value. Meanwhile, the invention also carries out optimization design from the transmission system, reduces the operation temperature, reduces the leakage of the system and improves the efficiency of the oil pump.
Description
Technical Field
The invention relates to a high-efficiency gear pump capable of realizing simple installation.
Background
The gear pump can divide into motor shaft rotation drive and the rotatory end drive of work machine shaft from the drive mode and two kinds, because the shaft end driving pump has simple structure than motor driving pump, occupation space is little, need not to connect the power cord, with low costs and reduce advantages such as fault point, therefore have extensive application in the market.
The input gear and the output gear are in meshing transmission in a cavity formed by the front bearing seat, the pump body and the rear bearing seat. After the running direction of the gear is determined, the positions of the oil suction cavity and the oil discharge cavity are fixed, the oil suction cavity and the oil discharge cavity can only output in a single direction, a plurality of reciprocating working conditions exist in the industrial gear box, the oil suction pipe and the oil discharge pipe under the working conditions are fixedly connected with the box body, and normal oil supply and lubrication of the gear pump cannot be realized by adopting a conventional shaft end driving gear pump.
Disclosure of Invention
The invention aims to provide an efficient gear pump capable of realizing simple installation so as to solve the problems in the prior art.
The technical scheme adopted for achieving the purpose of the invention is that the high-efficiency gear pump capable of achieving simple installation comprises a front bearing seat, a pump body, a rear bearing seat, a pump cover, an input gear, an output gear and four valves.
The front bearing seat, the pump body and the rear bearing seat are all of cylindrical structures, the axes of the front bearing seat, the pump body, the rear bearing seat and the pump cover are overlapped, and the front bearing seat, the pump body, the rear bearing seat and the pump cover are sequentially stacked along the axis direction of the front bearing seat and are connected through a plurality of connecting screws.
The pump cover is provided with circular through hole A and circular through hole B, circular through hole A and circular through hole B parallel interval arrangement, the length direction of circular through hole A and circular through hole B is perpendicular with the axis direction of front bearing frame, port C and port D are marked respectively to the both ends that circular through hole A runs through the pump cover lateral wall, port E and port F are marked respectively to the both ends that circular through hole B runs through the pump cover lateral wall, port C and port E lie in same one side of pump cover, port D and port F lie in same one side of pump cover.
The pump cover is provided with elliptical hole I and elliptical hole J, and elliptical hole I communicates circular through-hole A and circular through-hole B, and elliptical hole J communicates circular through-hole A and circular through-hole B, and elliptical hole I is close to port C and port E, and elliptical hole J is close to port D and port F.
An elliptical hole G is formed in the inner wall of the middle position of the circular through hole A, an elliptical hole H is formed in the inner wall of the middle position of the circular through hole B, and the elliptical hole G and the elliptical hole H penetrate through one side, in contact with the rear bearing seat, of the pump cover.
The valve comprises a valve seat, a valve core, a spring, a baffle and an elastic retainer ring for a shaft, wherein the valve seat is of a hollow cylindrical structure, a through hole I is formed in the center of one end face of the valve seat, a plurality of through holes II are formed in the other end face of the valve seat, a guide pipe is fixed in the center of the through hole II, and a groove I is formed in the through hole I along the circumferential direction of the through hole I.
The stiff end of stand pipe and the inside intercommunication of disk seat, the direction that the disk seat was kept away from to the free end orientation extends.
The valve core comprises a disc I and a cylindrical rod, one end of the cylindrical rod is connected to the central position of the disc I, a groove II is formed in the disc I along the circumferential direction of the disc I, and the groove II is matched with the groove I.
The cylindrical rod penetrates through the valve seat and extends out of the guide pipe, and a shaft elastic retainer ring is fixed on a rod section of the cylindrical rod extending out of the guide pipe.
The separation blade is the disc structure that has central through-hole, and the separation blade cover is established on the cylinder pole, and the circlip for the axle is towards the one side of stand pipe and is contacted with the separation blade.
The spring is sleeved on the guide tube and the cylindrical rod, one end of the spring is tightly abutted to the valve seat, and the other end of the spring is tightly abutted to the blocking piece.
The four valves are respectively marked as a valve u, a valve v, a valve w and a valve x, the valve u and the valve v are installed in the circular through hole B, and the valve w and the valve x are installed in the circular through hole A.
The valve seat of the valve u is fixed on the inner wall of the circular through hole B and is positioned between the elliptical hole H and the elliptical hole I, and the free end of the guide pipe of the valve u extends into the elliptical hole H.
The valve seat of the valve v is fixed on the inner wall of the circular through hole B and is positioned between the elliptical hole H and the elliptical hole J, and the free end of the guide pipe of the valve v faces the elliptical hole J.
The valve seat of the valve w is fixed on the inner wall of the circular through hole A and is positioned between the elliptical hole G and the elliptical hole I, and the free end of the guide pipe of the valve w extends into the elliptical hole G.
The valve seat of the valve x is fixed on the inner wall of the circular through hole A and is positioned between the elliptical hole G and the elliptical hole J, and the free end of the guide pipe of the valve x faces the elliptical hole J.
Two through holes III are formed in the rear bearing seat, the through holes III penetrate through two sides of the rear bearing seat perpendicular to the axis of the rear bearing seat, and the two through holes III are symmetrical about the center of the rear bearing seat. Two circular blind holes I have been seted up with one side of pump body contact to the rear bearing frame, circular blind hole I and III along the circumference staggered arrangement of rear bearing frame of through-hole, a through-hole III and elliptical aperture G intercommunication, another through-hole III and elliptical aperture H intercommunication.
The pump body is provided with a through hole IV, the through hole IV penetrates through two sides of the pump body perpendicular to the axis of the pump body, and the through hole IV is communicated with two through holes III and two round blind holes I.
The front bearing seat is provided with a through hole V, the through hole V penetrates through two sides of the front bearing seat vertical to the axis of the front bearing seat, one side of the front bearing seat contacting with the pump body is provided with a circular blind hole II, and the through hole V and the circular blind hole II are communicated with a through hole IV on the pump body.
The input gear and the output gear which are meshed with each other are arranged in a through hole IV on the pump body, one end of a rotating shaft of the input gear penetrates through a through hole V of the front bearing seat and extends out of the front bearing seat, and the other end of the rotating shaft of the input gear is arranged in a round blind hole I of the rear bearing seat.
One end of a rotating shaft of the output gear is installed in the round blind hole II of the front bearing seat, and the other end of the rotating shaft of the output gear is installed in the round blind hole I of the rear bearing seat.
The extending end of the rotating shaft of the input gear is connected with power equipment, at least one of the port D and the port F is connected with a box body filled with lubricating oil, at least one of the port C and the port E is connected with an oil receiving device, and the unconnected port of the port D, the port F, the port C and the port E is blocked by a sealing plug.
When the power equipment provides the rotating force in the set direction to the input gear, the through hole III communicated with the elliptical hole H serves as an oil suction cavity, and the through hole III communicated with the elliptical hole G serves as an oil discharge cavity. And starting the power equipment, generating negative pressure between the valve u and the valve v, tightly matching the groove I and the groove II of the valve u, and closing the valve u. When the negative pressure between the valve u and the valve v is larger than the spring elasticity of the valve v, the spring of the valve v is compressed, the groove I and the groove II of the valve v are separated, and the valve v is in an open state. Lubricating oil in the box body flows into the pump body through the valve v, the elliptical hole H and the oil suction cavity, the lubricating oil flows into the elliptical hole G through the oil discharge cavity under the drive of the input gear and the output gear, positive pressure is generated between the valve w and the valve x, the groove I and the groove II of the valve x are tightly matched, and the valve x is in a closed state. When the positive pressure between the valve w and the valve x is larger than the spring elasticity of the valve w, the spring of the valve w is compressed, the groove I and the groove II of the valve w are separated, the valve w is in an open state, and the lubricating oil flows into the oil receiving device through the valve w.
When the power equipment provides a rotating force in the opposite direction to the input gear, the through hole III communicated with the elliptical hole H serves as an oil discharge cavity, and the through hole III communicated with the elliptical hole G serves as an oil suction cavity. And starting the power equipment, generating negative pressure between the valve w and the valve x, tightly matching the groove I and the groove II of the valve w, and closing the valve w. When the negative pressure between the valve w and the valve x is larger than the spring elasticity of the valve x, the spring of the valve x is compressed, the groove I and the groove II of the valve x are separated, and the valve x is in an open state. Lubricating oil in the box body flows into the pump body through the valve x, the elliptical hole G and the oil suction cavity, the lubricating oil flows into the elliptical hole H through the oil discharge cavity under the drive of the input gear and the output gear, positive pressure is generated between the valve u and the valve v, the groove I and the groove II of the valve v are tightly matched, and the valve v is in a closed state. When the positive pressure between the valve u and the valve v is larger than the spring force of the valve u, the spring of the valve u is compressed, the groove I and the groove II of the valve u are separated, the valve u is in an open state, and lubricating oil flows into the oil receiving device through the valve u.
Furthermore, the front bearing seat, the pump body, the rear bearing seat and the pump cover are axially positioned by adopting two internal thread cylindrical pins.
Further, the port C, the port D, the port E and the port F are all provided with internal threads.
Furthermore, two unloading grooves I are formed in one side, in contact with the pump body, of the rear bearing seat, the two unloading grooves I are communicated with the two through holes III respectively, notches of the two unloading grooves I are communicated with the through hole IV, and the two unloading grooves I are located at the meshing position of the input gear and the output gear.
Furthermore, two unloading grooves II are formed in one side, in contact with the pump body, of the front bearing seat, notches of the two unloading grooves II are communicated with the through hole IV, and the two unloading grooves II are located at the meshing position of the input gear and the output gear.
Furthermore, one side of the front bearing seat, which is far away from the pump body, is provided with a circular positioning spigot, the positioning spigot is coaxial with the through hole V, the front bearing seat is positioned and installed with power equipment through the positioning spigot, and the contact surface of the front bearing seat and the power equipment is sealed by an O-shaped gasket.
Furthermore, an O-shaped gasket is adopted for sealing between the front bearing seat and the pump body, an O-shaped gasket is adopted for sealing between the pump body and the rear bearing seat, and an O-shaped gasket is adopted for sealing between the rear bearing seat and the pump cover.
Furthermore, a C-shaped flat key is arranged at the extending end of the rotating shaft of the input gear.
Furthermore, a bearing is arranged between the rotating shaft of the input gear and the inner wall of the through hole V, a bearing is arranged between the rotating shaft of the input gear and the inner wall of the circular blind hole I, a bearing is arranged between the rotating shaft of the output gear and the inner wall of the circular blind hole II, and a bearing is arranged between the rotating shaft of the output gear and the inner wall of the circular blind hole I.
Further, one end, facing the port E, of the valve seat of the valve u is axially limited by a hole elastic check ring, one end, facing the port F, of the valve v is axially limited by a hole elastic check ring, one end, facing the port C, of the valve w is axially limited by a hole elastic check ring, and one end, facing the port D, of the valve x is axially limited by a hole elastic check ring.
The oil-suction oil-discharge device has the advantages that reliable oil suction and oil discharge can be realized no matter the input gear rotates clockwise or anticlockwise, the requirements of various working conditions are greatly met, the reliability of a working system is improved, and the oil-suction oil-discharge device has great market application value. Meanwhile, the invention also carries out optimization design from the transmission system, reduces the operation temperature, reduces the leakage of the system and improves the efficiency of the oil pump.
Drawings
FIG. 1 is a three-dimensional view of a gear pump according to the present invention;
FIG. 2 is a cross-sectional view of a gear pump according to the present invention;
FIG. 3 is a cross-sectional view of a pump cap;
FIG. 4 is a schematic diagram I illustrating the distribution of holes inside a pump cover;
FIG. 5 is a schematic diagram II illustrating the distribution of holes inside the pump cover;
FIG. 6 is a schematic view of the clockwise rotation of the input gear;
FIG. 7 is a schematic view of the installation of valve u, valve v, valve w and valve x;
FIG. 8 is a cross-sectional view taken along line N-N of FIG. 2;
FIG. 9 is a schematic view of a front bearing block;
FIG. 10 is a schematic view of the pump body;
FIG. 11 is a schematic view of a rear bearing mount;
FIG. 12 is a schematic view of a valve seat;
fig. 13 is a schematic view of a valve cartridge.
In the figure: the pump comprises a front bearing seat 1, a through hole V101, a circular blind hole II 102, an unloading groove II 103, a pump body 2, a through hole IV 201, a rear bearing seat 3, a through hole III 301, a circular blind hole I302, an unloading groove I303, a pump cover 4, a connecting screw 5, an O-shaped gasket 6, a C-shaped flat key 7, an input gear 8, an output gear 9, an internal thread cylindrical pin 13, a hole elastic retainer ring 14, a valve seat 15, a through hole I1501, a through hole II 1502, a guide pipe 1503, a valve core 16, a disc I1601, a cylindrical rod 1602, a spring 17, a baffle 18, a shaft elastic retainer ring 19 and a positioning spigot 21.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses a high-efficient gear pump that can realize simple and easy installation, including front bearing frame 1, the pump body 2, rear bearing frame 3, pump cover 4, input gear 8, output gear 9 and four valves. The gear pump can be used for sucking and discharging oil in the horizontal direction or sucking and discharging oil in the vertical direction, and referring to fig. 1 or 2, the gear pump is used for sucking and discharging oil in the horizontal direction.
Referring to fig. 1, the front bearing seat 1, the pump body 2 and the rear bearing seat 3 are all cylinder structures with vertical axes, the rear bearing seat 3 is installed on the upper surface of the pump cover 4, the pump body 2 is installed on the upper surface of the rear bearing seat 3, the bearing seat 1 is installed on the upper surface of the pump body 2, and the front bearing seat 1, the pump body 2, the rear bearing seat 3 and the pump cover 4 are axially positioned by two internal thread cylindrical pins 13 and fixed by a plurality of connecting screws 5.
Referring to fig. 4 or 5, the pump cover 4 is provided with a circular through hole a and a circular through hole B, the axes of which are horizontal, the circular through hole a and the circular through hole B are arranged in parallel at intervals, two ends of the circular through hole a penetrating through the side wall of the pump cover 4 are respectively marked as a port C and a port D, two ends of the circular through hole B penetrating through the side wall of the pump cover 4 are respectively marked as a port E and a port F, the port C and the port E are located on the same side of the pump cover 4, and the port D and the port F are located on the same side of the pump cover 4. And the port C, the port D, the port E and the port F are all provided with internal threads.
The pump cover 4 is provided with elliptical hole I and elliptical hole J, and elliptical hole I communicates circular through-hole A and circular through-hole B, and elliptical hole J communicates circular through-hole A and circular through-hole B, and elliptical hole I is close to port C and port E, and elliptical hole J is close to port D and port F.
Elliptical hole G is formed in the inner wall of the middle position of the circular through hole A, elliptical hole H is formed in the inner wall of the middle position of the circular through hole B, and the elliptical hole G and the elliptical hole H penetrate through the upper surface of the pump cover 4.
Referring to fig. 3, the valve comprises a valve seat 15, a valve core 16, a spring 17, a baffle plate 18 and an elastic collar 19 for a shaft, referring to fig. 12, the valve seat 15 is of a hollow cylindrical structure, a through hole i 1501 is formed in the center of one end face of the valve seat 15, a plurality of through holes ii 1502 are formed in the other end face of the valve seat, a guide pipe 1503 is fixed in the center of the through hole i 1501, and a groove i is formed in the through hole i 1501 along the circumferential direction of the through hole i 1502.
The fixed end of the guide tube 1503 communicates with the interior of the valve seat 15, and the free end extends in a direction away from the valve seat 15.
Referring to fig. 13, the valve core 16 includes a disc i 1601 and a cylindrical rod 1602, one end of the cylindrical rod 1602 is connected to the center of the disc i 1601, the disc i 1601 is provided with a groove ii along the circumference thereof, and the groove ii is matched with the groove i.
Referring to fig. 3, the cylindrical rod 1602 passes through the valve seat 15 and extends out of the guide tube 1503, and a shaft circlip 19 is fixed to a rod section of the cylindrical rod 1602 extending out of the guide tube 1503.
The blocking piece 18 is a disk structure with a central through hole, the blocking piece 18 is sleeved on the cylindrical rod 1602, and one side of the shaft circlip 19 facing the guide tube 1503 contacts the blocking piece 18.
The spring 17 is sleeved on the guide tube 1503 and the cylindrical rod 1602, one end of the spring 17 abuts against the valve seat 15, and the other end of the spring 17 abuts against the baffle 18.
Referring to fig. 7, the four valves are respectively marked as a valve u, a valve v, a valve w and a valve x, the valve u and the valve v are installed in the circular through hole B, and the valve w and the valve x are installed in the circular through hole a.
The valve seat 15 of the valve u is fixed on the inner wall of the circular through hole B and is positioned between the elliptical hole H and the elliptical hole I, and the free end of the guide tube 1503 of the valve u extends into the elliptical hole H.
The valve seat 15 of the valve v is fixed on the inner wall of the circular through hole B and is positioned between the elliptical hole H and the elliptical hole J, and the free end of the guide tube 1503 of the valve v faces the elliptical hole J.
The valve seat 15 of the valve w is fixed on the inner wall of the circular through hole A and is positioned between the elliptical hole G and the elliptical hole I, and the free end of the guide tube 1503 of the valve w extends into the elliptical hole G.
The valve seat 15 of the valve x is fixed on the inner wall of the circular through hole a and is positioned between the elliptical hole G and the elliptical hole J, and the free end of the guide tube 1503 of the valve x faces the elliptical hole J.
The end, facing the port E, of the valve seat 15 of the valve u is axially limited by the aid of the hole elastic check ring 14, the end, facing the port F, of the valve v is axially limited by the aid of the hole elastic check ring 14, the end, facing the port C, of the valve w is axially limited by the aid of the hole elastic check ring 14, and the end, facing the port D, of the valve x is axially limited by the aid of the hole elastic check ring 14. The circlip for hole 14 at the valve u and the circlip for hole 14 at the valve v are symmetrical about the elliptical hole H, and the circlip for hole 14 at the valve w and the circlip for hole 14 at the valve x are symmetrical about the elliptical hole H.
Referring to fig. 11, the rear bearing seat 3 is provided with two through holes iii 301 penetrating through the upper and lower surfaces thereof, and the two through holes iii 301 are symmetrical with respect to the center of the rear bearing seat 3. Two circular blind holes I302 have been seted up to the upper surface of back bearing frame 3, and circular blind hole I302 and III 301 along the circumference staggered arrangement of back bearing frame 3 of through-hole, III 301 and elliptical hole G intercommunication of a through-hole, III 301 and elliptical hole H intercommunication of another through-hole.
Referring to fig. 10, a through hole iv 201 penetrating through the upper and lower surfaces of the pump body 2 is formed, and the through hole iv 201 is communicated with two through holes iii 301 and two round blind holes i 302.
Two unloading grooves I303 are formed in the upper surface of the rear bearing seat 3, the two unloading grooves I303 are respectively communicated with the two through holes III 301, notches of the two unloading grooves I303 are communicated with the through hole IV 201, and the two unloading grooves I303 are located at the meshing position of the input gear 8 and the output gear 9.
Referring to fig. 9, a through hole v 101 penetrating through the upper surface and the lower surface of the front bearing seat 1 is formed in the front bearing seat 1, a circular blind hole ii 102 is formed in the lower surface of the front bearing seat 1, and the through hole v 101 and the circular blind hole ii 102 are both communicated with a through hole iv 201 in the pump body 2.
Referring to fig. 2, the input gear 8 and the output gear 9 which are meshed with each other are mounted in a through hole iv 201 on the pump body 2, the upper end of a rotating shaft of the input gear 8 penetrates through the through hole v 101 of the front bearing seat 1 and extends out of the front bearing seat 1, a C-shaped flat key 7 is arranged at the extending end of the rotating shaft of the input gear 8, and the lower end of the rotating shaft of the input gear 8 is mounted in a round blind hole i 302 of the rear bearing seat 3.
The input gear 8 and the output gear 9 are made of low-carbon steel, the heat treatment process adopts carburizing and quenching, the tooth surface hardness can reach HRC58-HRC62, and the gear grinding process is adopted, so that the processing precision is improved, and the operating efficiency of the gear pump is improved.
The upper end of the rotating shaft of the output gear 9 is arranged in a round blind hole II 102 of the front bearing seat 1, and the lower end of the rotating shaft of the output gear 9 is arranged in a round blind hole I302 of the rear bearing seat 3. Referring to fig. 8, the lower surface of the front bearing seat 1 is provided with two unloading grooves ii 103, notches of the two unloading grooves ii 103 are both communicated with a through hole iv 201, and the two unloading grooves ii 103 are both located at the meshing position of the input gear 8 and the output gear 9.
The front bearing seat 1, the pump body 2 and the rear bearing seat 3 are all processed in a numerical control mode, the processing precision is guaranteed, the cavity formed by the end face of the input gear 8 and the end face of the output gear 9, the front bearing seat 1, the pump body 2 and the rear bearing seat 3 has a 0.1mm gap, the cavity corresponding to the pump body 2 and the tooth top has a 0.1mm gap, leakage is reduced on the premise that no interference is guaranteed, and the operating efficiency of the gear pump is improved.
The extension end of the rotating shaft of the input gear 8 is connected with power equipment, at least one of the port D and the port F is connected with a box body filled with lubricating oil, at least one of the port C and the port E is connected with an oil receiving device, and the ports which are not connected among the port D, the port F, the port C and the port E are blocked by sealing plugs.
Referring to fig. 2, a circular positioning spigot 21 is arranged on the upper surface of the front bearing seat 1, the positioning spigot 21 is coaxial with the through hole v 101, the front bearing seat 1 is positioned and mounted with power equipment through the positioning spigot 21, and the contact surface of the front bearing seat 1 and the power equipment is sealed by an O-shaped gasket 6. The front bearing seat 1 and the pump body 2 are sealed by adopting an O-shaped gasket 6, the pump body 2 and the rear bearing seat 3 are sealed by adopting the O-shaped gasket 6, and the rear bearing seat 3 and the pump cover 4 are sealed by adopting the O-shaped gasket 6.
A bearing is arranged between the rotating shaft of the input gear 8 and the inner wall of the through hole V101, a bearing is arranged between the rotating shaft of the input gear 8 and the inner wall of the circular blind hole I302, a bearing is arranged between the rotating shaft of the output gear 9 and the inner wall of the circular blind hole II 102, and a bearing is arranged between the rotating shaft of the output gear 9 and the inner wall of the circular blind hole I302. The bearing comprises an HK series open type punched outer ring needle roller bearing (without an inner ring) and an LR series grinding raceway inner ring, the transmission precision of the bearing is higher than that of a common bearing, the operation noise is lower, the transmission efficiency is higher, the LR series grinding raceway inner ring is wider than the widths of a retainer and an outer ring of the HK series open type punched outer ring needle roller bearing, and gaps are guaranteed to exist in the operation process of the end face of an input gear and the end face of an output gear as well as the end faces of the bearing retainer and the outer ring. The inner ring of the bearing raceway adopts a grinding process, so that the roughness of the raceway is improved, the running noise is reduced, and the running efficiency of the bearing is improved.
Referring to fig. 6, when the power unit provides a rotational force to the input gear 8 in a set direction (clockwise in this embodiment), the through hole iii 301 communicating with the elliptical hole H serves as an oil suction chamber, and the through hole iii 301 communicating with the elliptical hole G serves as an oil discharge chamber. And starting the power equipment, generating negative pressure between the valve u and the valve v, tightly matching the groove I and the groove II of the valve u, and closing the valve u. When the negative pressure between the valve u and the valve v is larger than the elastic force of the spring 17 of the valve v, the spring 17 of the valve v is compressed, the groove I and the groove II of the valve v are separated, and the valve v is in an open state. Lubricating oil in the box body flows into the pump body 2 through the valve v, the elliptical hole H and the oil suction cavity, the lubricating oil flows into the elliptical hole G through the oil discharge cavity under the drive of the input gear 8 and the output gear 9, positive pressure is generated between the valve w and the valve x, the groove I and the groove II of the valve x are tightly matched, and the valve x is in a closed state. When the positive pressure between the valve w and the valve x is larger than the elastic force of the spring 17 of the valve w, the spring 17 of the valve w is compressed, the groove I and the groove II of the valve w are separated, the valve w is in an open state, and lubricating oil flows into the oil receiving device through the valve w.
When the power equipment provides a rotating force to the input gear 8 in the opposite direction, the through hole III 301 communicated with the elliptical hole H serves as an oil discharge cavity, and the through hole III 301 communicated with the elliptical hole G serves as an oil suction cavity. And starting the power equipment, generating negative pressure between the valve w and the valve x, tightly matching the groove I and the groove II of the valve w, and closing the valve w. When the negative pressure between the valve w and the valve x is larger than the elastic force of the spring 17 of the valve x, the spring 17 of the valve x is compressed, the groove I and the groove II of the valve x are separated, and the valve x is in an open state. Lubricating oil in the box body flows into the pump body 2 through the valve x, the elliptical hole G and the oil suction cavity, the lubricating oil flows into the elliptical hole H through the oil discharge cavity under the drive of the input gear 8 and the output gear 9, positive pressure is generated between the valve u and the valve v, the groove I and the groove II of the valve v are tightly matched, and the valve v is in a closed state. When the positive pressure between the valve u and the valve v is larger than the elastic force of the spring 17 of the valve u, the spring 17 of the valve u is compressed, the groove I and the groove II of the valve u are separated, the valve u is in an open state, and lubricating oil flows into the oil receiving device through the valve u.
The embodiment adopts the optimal design, and after the installation direction of the valve seat and the valve core in the pump cover is determined, no matter the gear pump chamber rotates forwards or backwards, the positions of the oil suction port and the oil discharge port are fixed, and the rotation direction of the input gear does not need to be considered, so that the connection is reliable in the actual use process, the operation is simple, and the operation is convenient. Meanwhile, the invention also carries out optimization design from the transmission system, reduces the operation temperature, reduces the leakage of the system and improves the efficiency of the oil pump.
Example 2:
the embodiment discloses a high-efficient gear pump that can realize simple and easy installation, including front bearing frame 1, the pump body 2, rear bearing frame 3, pump cover 4, input gear 8, output gear 9 and four valves.
The front bearing seat 1, the pump body 2 and the rear bearing seat 3 are all of cylindrical structures and are overlapped in axis, and the front bearing seat 1, the pump body 2, the rear bearing seat 3 and the pump cover 4 are sequentially stacked in the axis direction of the front bearing seat 1 and are connected through a plurality of connecting screws 5.
The pump cover 4 is provided with a circular through hole A and a circular through hole B which are arranged at intervals in parallel, the length directions of the circular through hole A and the circular through hole B are perpendicular to the axis direction of the front bearing seat 1, two ends of the circular through hole A penetrating through the side wall of the pump cover 4 are respectively marked as a port C and a port D, two ends of the circular through hole B penetrating through the side wall of the pump cover 4 are respectively marked as a port E and a port F, the port C and the port E are located on the same side of the pump cover 4, and the port D and the port F are located on the same side of the pump cover 4.
The pump cover 4 is provided with elliptical hole I and elliptical hole J, and elliptical hole I communicates circular through-hole A and circular through-hole B, and elliptical hole J communicates circular through-hole A and circular through-hole B, and elliptical hole I is close to port C and port E, and elliptical hole J is close to port D and port F.
An elliptical hole G is formed in the inner wall of the middle position of the circular through hole A, an elliptical hole H is formed in the inner wall of the middle position of the circular through hole B, and the elliptical hole G and the elliptical hole H penetrate through one side, in contact with the rear bearing seat 3, of the pump cover 4.
The valve comprises a valve seat 15, a valve core 16, a spring 17, a baffle plate 18 and an elastic retainer ring 19 for a shaft, wherein the valve seat 15 is of a hollow cylindrical structure, a through hole I1501 is formed in the center of one end face of the valve seat 15, a plurality of through holes II 1502 are formed in the other end face of the valve seat, a guide pipe 1503 is fixed in the center of the through hole I1501, and a groove I is formed in the through hole I1501 along the circumferential direction of the through hole I1501.
The fixed end of the guide tube 1503 communicates with the interior of the valve seat 15, and the free end extends in a direction away from the valve seat 15.
The cylindrical rod 1602 passes through the valve seat 15 and extends out of the guide tube 1503, and a shaft circlip 19 is fixed to the rod section of the cylindrical rod 1602 extending out of the guide tube 1503.
The blocking piece 18 is a disk structure with a central through hole, the blocking piece 18 is sleeved on the cylindrical rod 1602, and one side of the shaft circlip 19 facing the guide tube 1503 contacts the blocking piece 18.
The spring 17 is sleeved on the guide tube 1503 and the cylindrical rod 1602, one end of the spring 17 abuts against the valve seat 15, and the other end abuts against the baffle 18.
The four valves are respectively marked as a valve u, a valve v, a valve w and a valve x, the valve u and the valve v are installed in the circular through hole B, and the valve w and the valve x are installed in the circular through hole A.
The valve seat 15 of the valve u is fixed on the inner wall of the circular through hole B and is positioned between the elliptical hole H and the elliptical hole I, and the free end of the guide tube 1503 of the valve u extends into the elliptical hole H.
The valve seat 15 of the valve v is fixed on the inner wall of the circular through hole B and is positioned between the elliptical hole H and the elliptical hole J, and the free end of the guide tube 1503 of the valve v faces the elliptical hole J.
The valve seat 15 of the valve w is fixed on the inner wall of the circular through hole A and is positioned between the elliptical hole G and the elliptical hole I, and the free end of the guide tube 1503 of the valve w extends into the elliptical hole G.
The valve seat 15 of the valve x is fixed on the inner wall of the circular through hole a and is positioned between the elliptical hole G and the elliptical hole J, and the free end of the guide tube 1503 of the valve x faces the elliptical hole J.
Two through holes III 301 are formed in the rear bearing seat 3, the through holes III 301 penetrate through the two sides of the rear bearing seat 3 perpendicular to the axis of the rear bearing seat, and the two through holes III 301 are symmetrical about the center of the rear bearing seat 3. Two circular blind holes I302 have been seted up to one side that rear bearing frame 3 and pump body 2 contacted, circular blind hole I302 and III 301 along rear bearing frame 3's circumference staggered arrangement of through-hole, III 301 and elliptical hole G intercommunication of a through-hole, III 301 and elliptical hole H intercommunication of another through-hole.
A through hole IV 201 is formed in the pump body 2, the through hole IV 201 penetrates through two sides of the pump body 2, which are perpendicular to the axis of the pump body, and the through hole IV 201 is communicated with the two through holes III 301 and the two round blind holes I302.
A through hole V101 is formed in the front bearing seat 1, the through hole V101 penetrates through two sides, perpendicular to the axis, of the front bearing seat 1, a circular blind hole II 102 is formed in one side, in contact with the pump body 2, of the front bearing seat 1, and the through hole V101 and the circular blind hole II 102 are communicated with a through hole IV 201 in the pump body 2.
The input gear 8 and the output gear 9 which are meshed with each other are arranged in a through hole IV 201 on the pump body 2, one end of a rotating shaft of the input gear 8 penetrates through a through hole V101 of the front bearing seat 1 and extends out of the front bearing seat 1, and the other end of the rotating shaft is arranged in a round blind hole I302 of the rear bearing seat 3.
One end of a rotating shaft of the output gear 9 is arranged in a round blind hole II 102 of the front bearing seat 1, and the other end of the rotating shaft is arranged in a round blind hole I302 of the rear bearing seat 3.
The extension end of the rotating shaft of the input gear 8 is connected with power equipment, at least one of the port D and the port F is connected with a box body filled with lubricating oil, at least one of the port C and the port E is connected with an oil receiving device, and the ports which are not connected among the port D, the port F, the port C and the port E are blocked by sealing plugs.
When the power equipment provides the rotating force of the set direction to the input gear 8, the through hole III 301 communicated with the elliptical hole H is used as an oil suction cavity, and the through hole III 301 communicated with the elliptical hole G is used as an oil discharge cavity. And starting the power equipment, generating negative pressure between the valve u and the valve v, tightly matching the groove I and the groove II of the valve u, and closing the valve u. When the negative pressure between the valve u and the valve v is larger than the elastic force of the spring 17 of the valve v, the spring 17 of the valve v is compressed, the groove I and the groove II of the valve v are separated, and the valve v is in an open state. Lubricating oil in the box body flows into the pump body 2 through the valve v, the elliptical hole H and the oil suction cavity, the lubricating oil flows into the elliptical hole G through the oil discharge cavity under the drive of the input gear 8 and the output gear 9, positive pressure is generated between the valve w and the valve x, the groove I and the groove II of the valve x are tightly matched, and the valve x is in a closed state. When the positive pressure between the valve w and the valve x is larger than the elastic force of the spring 17 of the valve w, the spring 17 of the valve w is compressed, the groove I and the groove II of the valve w are separated, the valve w is in an open state, and lubricating oil flows into the oil receiving device through the valve w.
When the power equipment provides a rotating force to the input gear 8 in the opposite direction, the through hole III 301 communicated with the elliptical hole H serves as an oil discharge cavity, and the through hole III 301 communicated with the elliptical hole G serves as an oil suction cavity. And starting the power equipment, generating negative pressure between the valve w and the valve x, tightly matching the groove I and the groove II of the valve w, and closing the valve w. When the negative pressure between the valve w and the valve x is larger than the elastic force of the spring 17 of the valve x, the spring 17 of the valve x is compressed, the groove I and the groove II of the valve x are separated, and the valve x is in an open state. Lubricating oil in the box body flows into the pump body 2 through the valve x, the elliptical hole G and the oil suction cavity, the lubricating oil flows into the elliptical hole H through the oil discharge cavity under the drive of the input gear 8 and the output gear 9, positive pressure is generated between the valve u and the valve v, the groove I and the groove II of the valve v are tightly matched, and the valve v is in a closed state. When the positive pressure between the valve u and the valve v is larger than the elastic force of the spring 17 of the valve u, the spring 17 of the valve u is compressed, the groove I and the groove II of the valve u are separated, the valve u is in an open state, and lubricating oil flows into the oil receiving device through the valve u.
It is worth explaining, this embodiment the major structure of gear pump can be according to on-the-spot space needs adjustment direction, realizes that horizontal direction oil absorption and oil extraction or vertical direction oil absorption and oil extraction arrange, and the gear pump can be according to the demand of working oil volume to the width of adjustment gear and the thickness of the pump body, and all the other essential element can realize the sharing, has the modular design theory, makes things convenient for the production organization, has shortened the period of supplying goods. In addition, the compressed lubricating oil can be normally discharged from the unloading groove, so that the problem of temperature rise is solved, the energy loss is reduced, and the efficiency of the oil pump is improved.
Example 3:
the main structure of this embodiment is the same as that of embodiment 2, and further, the front bearing seat 1, the pump body 2, the rear bearing seat 3 and the pump cover 4 adopt two internal thread cylindrical pins 13 for axial positioning.
Example 4:
the main structure of this embodiment is the same as that of embodiment 2, and further, the port C, the port D, the port E, and the port F are all provided with internal threads.
Example 5:
the main structure of this embodiment is the same as that of embodiment 2, and further, two unloading grooves i 303 are provided on one side of the rear bearing pedestal 3 contacting the pump body 2, the two unloading grooves i 303 are respectively communicated with the two through holes iii 301, the notches of the two unloading grooves i 303 are both communicated with the through hole iv 201, and the two unloading grooves i 303 are both located at the meshing position of the input gear 8 and the output gear 9.
Example 6:
the main structure of the embodiment is the same as that of embodiment 2, further, two unloading grooves ii 103 are formed in one side of the front bearing pedestal 1, which is in contact with the pump body 2, notches of the two unloading grooves ii 103 are communicated with a through hole iv 201, and the two unloading grooves ii 103 are located at the meshing position of the input gear 8 and the output gear 9.
Example 7:
the main structure of this embodiment is the same as embodiment 2, and further, one side of the front bearing seat 1 departing from the pump body 2 is provided with a circular positioning spigot 21, the positioning spigot 21 is coaxial with the through hole v 101, the front bearing seat 1 is positioned and installed with power equipment through the positioning spigot 21, and the contact surface of the front bearing seat 1 and the power equipment is sealed by an O-shaped gasket 6.
Example 8:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 2, an O-ring 6 is used for sealing between the front bearing block 1 and the pump body 2, an O-ring 6 is used for sealing between the pump body 2 and the rear bearing block 3, and an O-ring 6 is used for sealing between the rear bearing block 3 and the pump cover 4.
Example 9:
the main structure of this embodiment is the same as embodiment 2, and further, referring to fig. 2, a C-shaped flat key 7 is arranged at the protruding end of the rotating shaft of the input gear 8.
Example 10:
the main structure of this embodiment is the same as that of embodiment 2, and further, a bearing is arranged between the rotating shaft of the input gear 8 and the inner wall of the through hole v 101, a bearing is arranged between the rotating shaft of the input gear 8 and the inner wall of the circular blind hole i 302, a bearing is arranged between the rotating shaft of the output gear 9 and the inner wall of the circular blind hole ii 102, and a bearing is arranged between the rotating shaft of the output gear 9 and the inner wall of the circular blind hole i 302.
Example 11:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 3, the end of the valve seat 15 of the valve u facing the port E is axially limited by a circlip 14 for hole use, the end of the valve v facing the port F is axially limited by a circlip 14 for hole use, the end of the valve w facing the port C is axially limited by a circlip 14 for hole use, and the end of the valve x facing the port D is axially limited by a circlip 14 for hole use.
Claims (10)
1. The utility model provides a can realize high-efficient gear pump of simple and easy installation which characterized in that: the pump comprises a front bearing seat (1), a pump body (2), a rear bearing seat (3), a pump cover (4), an input gear (8), an output gear (9) and four valves;
the front bearing seat (1), the pump body (2) and the rear bearing seat (3) are all of cylindrical structures, the axes of the front bearing seat (1), the pump body (2), the rear bearing seat (3) and the pump cover (4) are overlapped, and the front bearing seat (1), the pump body (2), the rear bearing seat (3) and the pump cover (4) are sequentially stacked in the axis direction of the front bearing seat (1) and connected through a plurality of connecting screws (5);
the pump cover (4) is provided with a circular through hole A and a circular through hole B, the circular through hole A and the circular through hole B are arranged in parallel at intervals, the length directions of the circular through hole A and the circular through hole B are perpendicular to the axis direction of the front bearing seat (1), two ends of the circular through hole A penetrating through the side wall of the pump cover (4) are respectively marked as a port C and a port D, two ends of the circular through hole B penetrating through the side wall of the pump cover (4) are respectively marked as a port E and a port F, the port C and the port E are located on the same side of the pump cover (4), and the port D and the port F are located on the same side of the pump cover (4);
the pump cover (4) is provided with an elliptical hole I and an elliptical hole J, the elliptical hole I is used for communicating the circular through hole A with the circular through hole B, the elliptical hole J is used for communicating the circular through hole A with the circular through hole B, the elliptical hole I is close to the port C and the port E, and the elliptical hole J is close to the port D and the port F;
an elliptical hole G is formed in the inner wall of the middle position of the circular through hole A, an elliptical hole H is formed in the inner wall of the middle position of the circular through hole B, and the elliptical hole G and the elliptical hole H penetrate through one side, in contact with the rear bearing seat (3), of the pump cover (4);
the valve comprises a valve seat (15), a valve core (16), a spring (17), a baffle plate (18) and an elastic retainer ring (19) for a shaft, wherein the valve seat (15) is of a hollow cylindrical structure, a through hole I (1501) is formed in the center of one end face of the valve seat (15), a plurality of through holes II (1502) are formed in the other end face of the valve seat, a guide pipe (1503) is fixed in the center of the through hole I (1501), and a groove I is formed in the through hole I (1501) along the circumferential direction of the through hole I;
the fixed end of the guide tube (1503) is communicated with the interior of the valve seat (15), and the free end extends towards the direction far away from the valve seat (15);
the valve core (16) comprises a disc I (1601) and a cylindrical rod (1602), one end of the cylindrical rod (1602) is connected to the center of the disc I (1601), a groove II is formed in the disc I (1601) along the circumferential direction of the disc I, and the groove II is matched with the groove I;
the cylindrical rod (1602) penetrates through the valve seat (15) and extends out of the guide tube (1503), and a shaft elastic check ring (19) is fixed on a rod section of the cylindrical rod (1602) extending out of the guide tube (1503);
the blocking piece (18) is of a disc structure with a central through hole, the blocking piece (18) is sleeved on the cylindrical rod (1602), and one side, facing the guide pipe (1503), of the elastic retainer ring (19) for the shaft is in contact with the blocking piece (18);
the spring (17) is sleeved on the guide tube (1503) and the cylindrical rod (1602), one end of the spring (17) is tightly abutted against the valve seat (15), and the other end of the spring (17) is tightly abutted against the baffle plate (18);
the four valves are respectively marked as a valve u, a valve v, a valve w and a valve x, the valve u and the valve v are installed in the circular through hole B, and the valve w and the valve x are installed in the circular through hole A;
the valve seat (15) of the valve u is fixed on the inner wall of the circular through hole B and is positioned between the elliptical hole H and the elliptical hole I, and the free end of the guide pipe (1503) of the valve u extends into the elliptical hole H;
the valve seat (15) of the valve v is fixed on the inner wall of the circular through hole B and is positioned between the elliptical hole H and the elliptical hole J, and the free end of the guide pipe (1503) of the valve v faces the elliptical hole J;
the valve seat (15) of the valve w is fixed on the inner wall of the circular through hole A and is positioned between the elliptical hole G and the elliptical hole I, and the free end of the guide pipe (1503) of the valve w extends into the elliptical hole G;
the valve seat (15) of the valve x is fixed on the inner wall of the circular through hole A and is positioned between the elliptical hole G and the elliptical hole J, and the free end of the guide pipe (1503) of the valve x faces the elliptical hole J;
the rear bearing seat (3) is provided with two through holes III (301), the through holes III (301) penetrate through two sides of the rear bearing seat (3) vertical to the axis of the rear bearing seat, and the two through holes III (301) are symmetrical about the center of the rear bearing seat (3); one side of the rear bearing seat (3) contacting the pump body (2) is provided with two circular blind holes I (302), the circular blind holes I (302) and the through holes III (301) are arranged in a staggered mode along the circumferential direction of the rear bearing seat (3), one through hole III (301) is communicated with the elliptical hole G, and the other through hole III (301) is communicated with the elliptical hole H;
the pump body (2) is provided with a through hole IV (201), the through hole IV (201) penetrates through two sides of the pump body (2) vertical to the axis of the pump body, and the through hole IV (201) is communicated with two through holes III (301) and two round blind holes I (302);
the front bearing seat (1) is provided with a through hole V (101), the through hole V (101) penetrates through two sides of the front bearing seat (1) vertical to the axis of the front bearing seat, one side of the front bearing seat (1) contacting the pump body (2) is provided with a circular blind hole II (102), and the through hole V (101) and the circular blind hole II (102) are communicated with a through hole IV (201) in the pump body (2);
the input gear (8) and the output gear (9) which are meshed with each other are mounted in a through hole IV (201) in the pump body (2), one end of a rotating shaft of the input gear (8) penetrates through a through hole V (101) of the front bearing seat (1) and extends out of the front bearing seat (1), and the other end of the rotating shaft is mounted in a round blind hole I (302) of the rear bearing seat (3);
one end of a rotating shaft of the output gear (9) is installed in a round blind hole II (102) of the front bearing seat (1), and the other end of the rotating shaft is installed in a round blind hole I (302) of the rear bearing seat (3);
the extension end of the rotating shaft of the input gear (8) is connected with power equipment, at least one of the port D and the port F is connected with a box body filled with lubricating oil, at least one of the port C and the port E is connected with an oil receiving device, and the ports which are not connected among the port D, the port F, the port C and the port E are blocked by sealing plugs;
when the power equipment provides a rotating force in a set direction to the input gear (8), the through hole III (301) communicated with the elliptical hole H is used as an oil suction cavity, and the through hole III (301) communicated with the elliptical hole G is used as an oil discharge cavity; starting the power equipment, generating negative pressure between the valve u and the valve v, tightly matching the groove I and the groove II of the valve u, and keeping the valve u in a closed state; when the negative pressure between the valve u and the valve v is larger than the elastic force of a spring (17) of the valve v, the spring (17) of the valve v is compressed, a groove I and a groove II of the valve v are separated, and the valve v is in an open state; lubricating oil in the box body flows into the pump body (2) through the valve v, the elliptical hole H and the oil suction cavity, the lubricating oil flows into the elliptical hole G through the oil discharge cavity under the drive of the input gear (8) and the output gear (9), positive pressure is generated between the valve w and the valve x, a groove I of the valve x is tightly matched with a groove II, and the valve x is in a closed state; when the positive pressure between the valve w and the valve x is larger than the elastic force of a spring (17) of the valve w, the spring (17) of the valve w is compressed, a groove I and a groove II of the valve w are separated, the valve w is in an open state, and lubricating oil flows into the oil receiving device through the valve w;
when the power equipment provides a rotating force in the opposite direction to the input gear (8), the through hole III (301) communicated with the elliptical hole H is used as an oil discharge cavity, and the through hole III (301) communicated with the elliptical hole G is used as an oil suction cavity; starting the power equipment, generating negative pressure between the valve w and the valve x, tightly matching the groove I and the groove II of the valve w, and keeping the valve w in a closed state; when the negative pressure between the valve w and the valve x is larger than the elastic force of a spring (17) of the valve x, the spring (17) of the valve x is compressed, a groove I and a groove II of the valve x are separated, and the valve x is in an open state; lubricating oil in the box body flows into the pump body (2) through the valve x, the elliptical hole G and the oil suction cavity, the lubricating oil flows into the elliptical hole H through the oil discharge cavity under the drive of the input gear (8) and the output gear (9), positive pressure is generated between the valve u and the valve v, a groove I and a groove II of the valve v are tightly matched, and the valve v is in a closed state; when the positive pressure between the valve u and the valve v is larger than the elastic force of the spring (17) of the valve u, the spring (17) of the valve u is compressed, the groove I and the groove II of the valve u are separated, the valve u is in an open state, and lubricating oil flows into the oil receiving device through the valve u.
2. A high efficiency gear pump capable of easy installation according to claim 1, wherein: the front bearing seat (1), the pump body (2), the rear bearing seat (3) and the pump cover (4) are axially positioned by two internal thread cylindrical pins (13).
3. A high efficiency gear pump capable of easy installation according to claim 1, wherein: the port C, the port D, the port E and the port F are all provided with internal threads.
4. A high efficiency gear pump capable of easy installation according to claim 1, wherein: two unloading grooves I (303) are formed in one side, in contact with the pump body (2), of the rear bearing seat (3), the two unloading grooves I (303) are communicated with the two through holes III (301) respectively, notches of the two unloading grooves I (303) are communicated with the through hole IV (201), and the two unloading grooves I (303) are located at the meshing position of the input gear (8) and the output gear (9).
5. A high efficiency gear pump capable of easy installation according to claim 1, wherein: two unloading grooves II (103) are formed in one side, in contact with the pump body (2), of the front bearing seat (1), notches of the two unloading grooves II (103) are communicated with a through hole IV (201), and the two unloading grooves II (103) are located at the meshing position of the input gear (8) and the output gear (9).
6. A high efficiency gear pump capable of easy installation according to claim 1, wherein: one side of the front bearing seat (1) deviating from the pump body (2) is provided with a circular positioning spigot (21), the positioning spigot (21) is coaxial with the through hole V (101), the front bearing seat (1) is positioned and installed with power equipment through the positioning spigot (21), and the contact surface of the front bearing seat (1) and the power equipment is subjected to sealing treatment through an O-shaped gasket (6).
7. A high efficiency gear pump capable of easy installation according to claim 1, wherein: the pump is characterized in that an O-shaped gasket (6) is adopted between the front bearing seat (1) and the pump body (2) for sealing treatment, an O-shaped gasket (6) is adopted between the pump body (2) and the rear bearing seat (3) for sealing treatment, and an O-shaped gasket (6) is adopted between the rear bearing seat (3) and the pump cover (4) for sealing treatment.
8. A high efficiency gear pump capable of easy installation according to claim 1, wherein: and a C-shaped flat key (7) is arranged at the extending end of the rotating shaft of the input gear (8).
9. A high efficiency gear pump capable of easy installation according to claim 1, wherein: a bearing is arranged between the rotating shaft of the input gear (8) and the inner wall of the through hole V (101), a bearing is arranged between the rotating shaft of the input gear (8) and the inner wall of the circular blind hole I (302), a bearing is arranged between the rotating shaft of the output gear (9) and the inner wall of the circular blind hole II (102), and a bearing is arranged between the rotating shaft of the output gear (9) and the inner wall of the circular blind hole I (302).
10. A high efficiency gear pump capable of easy installation according to claim 1, wherein: one end, facing the port E, of a valve seat (15) of the valve u is axially limited by a hole elastic check ring (14), one end, facing the port F, of the valve v is axially limited by the hole elastic check ring (14), one end, facing the port C, of the valve w is axially limited by the hole elastic check ring (14), and one end, facing the port D, of the valve x is axially limited by the hole elastic check ring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210225292.3A CN114542456B (en) | 2022-03-09 | 2022-03-09 | Efficient gear pump capable of realizing simple installation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210225292.3A CN114542456B (en) | 2022-03-09 | 2022-03-09 | Efficient gear pump capable of realizing simple installation |
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| CN114542456A true CN114542456A (en) | 2022-05-27 |
| CN114542456B CN114542456B (en) | 2023-06-30 |
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| CN202210225292.3A Active CN114542456B (en) | 2022-03-09 | 2022-03-09 | Efficient gear pump capable of realizing simple installation |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114542456B (en) | 2023-06-30 |
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