Oil injection device for gear pump machining

Abstract

The utility model relates to an oil injection device for gear pump machining, which comprises a rack, an operation table is arranged in the rack, an oil storage tank is arranged above the operation table, the oil storage tank is connected with an air pressure hose, and the air pressure hose is connected with an air pressure pump. A placing plate is arranged above the operation table, a first driven bevel gear is mounted below the placing plate, a driving motor is mounted below the operation table, a first driving bevel gear and a second driving bevel gear are mounted on the driving motor, and the second driving bevel gear is meshed with the first driven bevel gear; the pneumatic pump comprises a pump body, a piston is arranged in the pump body and can move in the pump body, a push rod is hinged to the lower end of the piston, a crankshaft is hinged to the lower end of the push rod, a second driven bevel gear is installed on the crankshaft, and the second driving bevel gear is meshed with the second driven bevel gear; through the pneumatic pump, the flow regulating valve and other mechanisms, automatic oil injection is carried out on the gear pump in the slow rotation process of the gear pump, the labor cost is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pump oil injection equipment, in particular to an oil injection device for gear pump processing. Background Art

[0002] With the continuous expansion of industrial production and the improvement of production efficiency, the workload and continuous operating time of gear pumps are also increasing. In this high-intensity working environment, friction problems within the gear pump's internal moving parts, especially the meshing between the gears and between the gears and the pump body and side panels, are becoming increasingly prominent. To reduce wear, lower the coefficient of friction, extend the service life of the gear pump, and ensure its stable and efficient operation, lubrication has become a crucial step, and oiling is the key to achieving effective lubrication.

[0003] The patent with announcement number CN221288549U discloses an oil filling device for gear pump processing. This utility model patent sets a baffle on the inner side of the oil filling cylinder, and spirally sets a number of pressure columns used in conjunction with the baffle on the surface of the push rod at equal intervals. The operator completes the equal amount of oil filling process by sequentially squeezing and contacting the pressure columns and the baffle at different positions; by setting a positioning mechanism between the baffle and the oil filling cylinder, the oil filling cylinder can change the position of the baffle through the positioning mechanism when the oil needs to be replenished, so that the push rod and the pressure column can be freely pulled up and down; secondly, by rotating a roller sleeve on the surface of the pressure column, the friction coefficient between the baffle and the pressure column is reduced by the roller sleeve after the pressure column is squeezed and contacted with the baffle, and during the alternating lateral rotation of the two pressure columns.

[0004] The existing oil filling device requires manual oil filling of the gear pump, which increases labor costs and is prone to affecting the oil filling quality due to human error. However, some special processing processes or the production of high-performance gear pumps require oil filling when the gear pump rotates slowly. At this time, manual control is required to rotate the gear pump, and oil needs to be filled during the rotation process, which greatly reduces work efficiency. Utility Model Content

[0005] In order to solve the above problems, the present invention provides an oil filling device for gear pump processing, comprising a frame, an operating table is arranged in the frame, an oil storage tank is arranged above the operating table, the oil storage tank is connected to an air pressure hose, the air pressure hose is connected to the air pressure pump, a placement plate is arranged above the operating table, a first slave bevel gear is installed below the placement plate, a drive motor is installed below the operating table, a first main bevel gear and a second main bevel gear are installed on the drive motor, and the second main bevel gear is meshed with the first slave bevel gear; the air pressure pump comprises a pump body, a piston is provided inside the pump body, the piston can move in the pump body, the lower end of the piston is hinged to a push rod, the lower end of the push rod is hinged to a crankshaft, the second slave bevel gear is installed on the crankshaft, and the second main bevel gear is meshed with the second slave bevel gear; when the placement plate rotates, the air pressure pressurizes the oil in the oil storage tank and fills the oil in the oil storage tank into the gear pump.

[0006] Furthermore, the oil outlet of the oil storage tank is connected to a flow regulating valve, which includes a valve body, a valve core is arranged inside the valve body, the lower end of the valve core is connected to a return spring, the lower end of the return spring is connected to an adjusting bolt, and the adjusting bolt passes through the bottom of the valve body.

[0007] Furthermore, the upper end of the oil storage tank is a square structure, and the lower end is a conical structure. A sliding support plate is fixedly connected to the middle position of the oil storage tank. The four corners of the sliding support plate are mounted on the four pillars of the frame and can move up and down.

[0008] Furthermore, a telescopic rod is fixedly connected to the middle position of the top of the frame, the telescopic rod is fixedly connected to the top surface of the oil storage tank, and chains are provided at the four corners of the top of the oil storage tank, and the chains are hinged to the top of the frame.

[0009] Furthermore, a refueling port is provided on the top of the oil storage tank, the refueling port is equipped with a sealing cover, a filter is installed at the refueling port, and an oil outlet is provided at the center position of the lower end of the oil storage tank.

[0010] Furthermore, the oil outlet of the flow regulating valve is connected to an oil filling nozzle, and a splash guard is installed around the oil filling nozzle.

[0011] Furthermore, two linear rails are provided at the edge of the placement plate, and two sliders matching the rails are provided on the two linear rails. The sliders are provided with locking bolts, and a limiting plate is connected between the two sliders corresponding to the opposite sides.

[0012] Furthermore, the rack is a rectangular frame structure, four casters are provided under the rack, and an operating table is fixedly connected to the middle position of the rack.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the gear pump is placed on a placement plate, the gear pump is clamped by a limit plate, and the limit plate is locked by a locking bolt. The telescopic rod is adjusted so that the oil injection nozzle is located in the oil injection hole of the gear pump. The drive motor is started, and the placement plate is slowly rotated through the mutual meshing relationship between the bevel gears. During the rotation of the placement plate, the air pressure pump generates a certain amount of air pressure. The air pressure is transmitted to the oil storage tank through the air pressure hose. The air pressure will increase the pressure of the oil in the oil storage tank, causing the pump oil to flow to the flow control device. The valve core in the flow control device cooperates with the return spring to achieve the purpose of automatic oiling of the gears, etc.

[0014] This novel device uses an air pump and flow control valve to inject oil into the gear pump as it slowly rotates, ensuring that the oil is evenly filled into the complex internal structure. The slow rotation speed can control the oil injection rate, avoiding problems such as oil splashing or insufficient lubrication caused by excessive rotation speed. This device can adapt to the processing needs of gear pumps of different models and specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the driving mechanism structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the placement plate and clamping assembly structure of the utility model;

[0019] Figure 5 It is a cross-sectional schematic diagram of point A of the present utility model;

[0020] Figure 6 This is a cross-sectional schematic diagram of the air pressure pump of the utility model;

[0021] Among them, 11-frame, 12-operating table, 13-placement plate, 14-track, 15-slider, 16-limiting plate, 17-locking bolt, 21-oil storage tank, 22-telescopic rod, 23-sealing cover, 26-sliding support plate, 27-chain, 31-pump body, 32-piston, 33-push rod, 34-crankshaft, 35-air pressure hose, 41-drive motor, 42-first main bevel gear, 43-second main bevel gear, 44-first slave bevel gear, 45-second slave bevel gear, 51-valve body, 52-valve core, 53-return spring, 54-adjusting bolt, 55-oil filling nozzle, 56-splash cover. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. In the embodiments, the components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents selected embodiments of the present application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections; electrical connections; hydraulic connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] See Figure 1-6 As shown, the present invention provides an oil injection device for gear pump processing, comprising a frame 11, with an operating table 12 provided in the middle of the frame 11. The operating table 12 can serve as a platform for positioning, clamping, and injecting oil into the gear pump. An oil storage tank 21 is provided above the operating table 12 for storing lubricating oil to be injected. A flow regulating valve is provided at the lower end of the oil storage tank 21, through which the oil output speed can be adjusted. An air pressure pump is provided above the oil storage tank 21, which can inject the pumping oil in the oil storage tank 21 into the gear pump through the port of the gear pump housing through air pressure.

[0025] The frame 11 is a rectangular frame structure as a whole, with four casters arranged at the bottom thereof, an operating table 12 is arranged in the middle position of the frame 11, the operating table 12 is fixedly connected to the frame 11, a placement plate 13 is installed in the center of the operating table 12, the placement plate 13 is located above the operating table 12, and is arranged parallel to the operating table 12. The placement plate 13 is a rectangular structure, and two linear rails 14 are arranged at the edge of the placement plate 13. The two linear rails 14 are parallel to each other, and two sliders 15 matching the rails 14 are arranged on the two linear rails 14. The slider 15 can move horizontally on the rail 14, and a locking bolt 17 is arranged on the slider 15. The slider 15 can be locked on the rail 1 by twisting the locking bolt 17. 4, a limit plate 16 is provided above the track 14, and the limit plate 16 is connected to the corresponding two sliders. At this time, the limit plate 16 can move horizontally on the placement plate 13 to place the gear pump between the two tracks 14. The gear pump can be limited from both sides by horizontally moving the two limit plates 16. A first slave bevel gear 44 is provided below the placement plate 13. The first slave bevel gear 44 passes through the center position of the operating table 12 and is fixedly connected to the placement plate 13. A drive motor 41 is provided below the operating table 12, and a first main bevel gear 42 is docked on the drive motor 41. The drive motor 41 can drive the placement plate 13 to rotate by the mutual engagement of the first main bevel gear 42 and the first slave bevel gear 44.

[0026] An oil tank 21 is provided at the upper end of the frame 11. The oil tank 21 is located directly above the placement plate 13. The upper end of the oil tank 21 is square, and its lower end is a tapered structure. A telescopic rod 22 is fixedly connected to the middle position of the top of the frame 11. The telescopic rod 22 can be hydraulically driven or electrically driven to retract. The telescopic rod 22 is fixedly connected to the top surface of the oil tank 21. The telescopic rod 22 can drive the oil tank 21 to move vertically and adjust the distance between the oil tank 21 and the operating table 12. Chains 27 are provided at the four corners of the top of the oil tank 21. The chain 27 is hinged to the top position of the frame 11 to suspend the oil tank 21 inside the frame. A sliding support plate 26 is fixedly connected to the middle position of the oil tank 21. The four corners of the sliding support plate 26 are provided with square holes. The square holes pass through the four pillars of the frame, so that the sliding support plate 26 is sleeved on the four pillars of the frame and can move up and down.

[0027] A square refueling port is provided on the top of the oil storage tank 21, and the refueling port is equipped with a sealing cover 23. A filter is also installed at the refueling port, which can prevent impurities from entering the oil storage tank 21 during the refueling process. An oil outlet is set at the center position of the conical lower end of the oil storage tank 21, and the pumped oil can flow naturally to the oil outlet by gravity.

[0028] An air inlet is provided at the upper end of the oil storage tank 21, and the air inlet is connected to an air pressure hose 35. An air pressure pump is installed at the other end of the air pressure hose 35. The air pressure pump includes a pump body 31, and a piston 32 is provided inside the pump body 31. The piston 32 can move back and forth inside the pump body 31, thereby transmitting the gas inside the pump body 31 to the oil storage tank 21 through the air pressure hose 35. A push rod 33 is hinged at the lower end of the piston 32, and a crankshaft 34 is hinged at the lower end of the push rod 33. When the crankshaft 34 rotates, it drives the push rod 33 to move up and down, thereby pushing the piston 32 to move back and forth in the pump body 31. A second slave bevel gear 45 is installed on the crankshaft 34, and a second main bevel gear 43 is connected to the output shaft of the drive motor 41. The second main bevel gear 43 and the first main bevel gear 42 can rotate simultaneously, and the second main bevel gear 43 and the second slave bevel gear 45 are meshed with each other.

[0029] When the drive motor 41 rotates the first main bevel gear 42, the placement plate 13 rotates through the meshing relationship between the first main bevel gear 42 and the first slave bevel gear 44. Simultaneously, the drive motor 41 rotates the second main bevel gear 43, and through the meshing relationship between the second main bevel gear 43 and the second slave bevel gear 45, the crankshaft 34 mounted on the second slave bevel gear 45 rotates. Because the crankshaft 34 is hinged to the lower end of the push rod 33, and the piston 32 is hinged to the upper end of the push rod 33, the piston 32 is driven to reciprocate within the pump body 31.

[0030] During the reciprocating movement of the piston 32, a certain air pressure will be generated, and the air pressure will be transmitted to the oil storage tank 21 through the air pressure hose 35. The air pressure will pressurize the oil in the oil storage tank 21, so that the oil in the oil storage tank 21 flows downward under the action of pressure. The oil outlet of the oil storage tank 21 is connected to a flow regulating valve.

[0031] The flow control valve comprises a metal valve body 51, with an oil outlet connected to its upper end. When liquid in the oil tank 21 is under pressure, it flows from the oil outlet into the inlet of the valve body 51. A valve core 52 is located within the valve body 51. The top of the valve core 52 is a sealing plug that blocks the inlet of the valve body 51. A return spring 53 is fixedly connected to the lower end of the valve core 52. The lower end of the return spring 53 is connected to an adjusting screw 54 that passes through the bottom of the valve body 51. This adjusting screw 54 allows the pressure of the return spring 53 to be adjusted. In the initial state, the valve core 52 and return spring 53 cooperate to seal the inlet of the valve body 51, preventing liquid from flowing downward. When liquid enters the valve body 51, hydraulic pressure pushes the valve core 52 downward, compressing the return spring 53 downward. This hydraulic pressure separates the valve core 52 from the inner wall of the valve body 51, allowing liquid to flow smoothly through the valve body 51 and out of the oil outlet of the valve body 51. When the drive motor 41 stops rotating, liquid stops flowing into the flow control valve. At this point, the return spring 53 resets, pushing the valve core 52 upward, blocking the inlet of the valve body 51. This prevents the liquid from flowing further downward, preventing leakage and unnecessary flow, and achieving the purpose of automatically lubricating gears, etc. The oil outlet of the flow control valve is connected to an oiling nozzle 55, which needs to directly contact the oil filling hole of the gear pump. Splash guards 56 are installed around some oiling nozzles to prevent oil from splashing during the oiling process.

[0032] Working principle: First, place the gear pump between the two linear rails 14 of the placement plate 13, clamp the gear pump through the limit plate 16, and lock the limit plate 16 through the locking bolt 17, adjust the telescopic rod 22 so that the oil injection nozzle 55 is located in the oil injection hole of the gear pump, start the drive motor 41, and the placement plate 13 rotates slowly through the mutual meshing relationship between the bevel gears. During the rotation of the placement plate 13, the air pressure pressurizes the oil in the oil storage tank 21, so that the pump oil flows to the flow regulating device, and cooperates with the valve core 52 and the return spring 53 in the flow regulating device to achieve the purpose of automatic oiling of gears, etc.

[0033] In addition, there is an optional solution, which is to replace the original drive motor 41 with a rocker, which is connected to the first main bevel gear 42. By manually operating the rocker, the gear pump rotation speed and oil injection speed can be controlled, so that the device can be controlled more accurately.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based primarily on the scope of protection of the claims.

Claims

1. An oil injection device for gear pump processing, characterized in that: The machine comprises a frame, an operating table is arranged in the frame, an oil storage tank is arranged above the operating table, the oil storage tank is connected to an air pressure hose, and the air pressure hose is connected to an air pressure pump; A placement plate is provided above the operating table, a first slave bevel gear is installed below the placement plate, a drive motor is installed below the operating table, a first main bevel gear and a second main bevel gear are installed on the drive motor, and the first main bevel gear is meshed with the first slave bevel gear; The pneumatic pump includes a pump body, a piston is provided inside the pump body, the piston can move in the pump body, the lower end of the piston is hinged to a push rod, the lower end of the push rod is hinged to a crankshaft, a second slave bevel gear is installed on the crankshaft, and the second master bevel gear is meshed with the second slave bevel gear; When the placement plate rotates, it drives the piston to reciprocate in the pump body, and the oil in the oil storage tank is injected into the gear pump.

2. The oil injection device for gear pump processing according to claim 1, characterized in that: The oil outlet of the oil storage tank is connected to a flow regulating valve, which includes a valve body with a valve core arranged inside the valve body. The lower end of the valve core is connected to a return spring, and the lower end of the return spring is connected to an adjusting bolt, which passes through the bottom of the valve body.

3. The oil injection device for gear pump processing according to claim 1, characterized in that: The upper end of the oil storage tank is a square structure, and the lower end is a conical structure. A sliding support plate is fixedly connected to the middle position of the oil storage tank. The four corners of the sliding support plate are sleeved on the four pillars of the frame and can move up and down.

4. The oil injection device for gear pump machining according to claim 2, characterized in that: A telescopic rod is fixedly connected to the middle position of the top of the frame, the telescopic rod is fixedly connected to the top surface of the oil storage tank, and chains are provided at the four corners of the top of the oil storage tank, and the chains are hinged to the top of the frame.

5. The oil injection device for gear pump processing according to claim 1, characterized in that: The top of the oil storage tank is provided with a refueling port, the refueling port is equipped with a sealing cover, a filter is installed at the refueling port, and an oil outlet is arranged at the center position of the lower end of the oil storage tank.

6. The oil injection device for gear pump machining according to claim 2, characterized in that: The oil outlet of the flow regulating valve is connected to an oil injection nozzle, and a splash shield is installed around the oil injection nozzle.

7. The oil injection device for gear pump machining according to claim 1, characterized in that: Two linear rails are provided at the edge of the placement plate. Two sliders matching the rails are provided on the two linear rails. Locking bolts are provided on the sliders. A limiting plate is connected between the two sliders corresponding to opposite sides.

8. The oil injection device for gear pump machining according to claim 1, characterized in that: The frame is a rectangular frame structure, four casters are arranged under the frame, and an operating table is fixedly connected to the middle position of the frame.

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