CN217584014U

CN217584014U - Multi-point electric grease pump with adjustable discharge capacity

Info

Publication number: CN217584014U
Application number: CN202221060053.9U
Authority: CN
Inventors: 吕浩军; 朱智孝; 金杨军; 林杰; 郑利书; 金德淼
Original assignee: Zhejiang Liubian Machinery Lubricating Co ltd
Current assignee: Zhejiang Liubian Machinery Lubricating Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-10-14
Anticipated expiration: 2032-05-06

Abstract

The utility model relates to an adjustable discharge capacity's multiple spot electronic grease pump, including pump seat, oil tank, drive mechanism, plunger pump, program controller, be equipped with grease discharge capacity adjusting device at the pump body inner chamber of plunger pump, can avoid the grease extravagant according to the grease discharge capacity of each oil-out of the corresponding regulation of the lubricating oil volume of each lubricating point.

Description

Multi-point electric grease pump with adjustable discharge capacity

Technical Field

The utility model relates to a multiple spot electric grease pump belongs to lubricated technical field medium function foundation spare. The utility model is suitable for a mechanical equipment lubricating system's grease delivery pump.

Background

In a grease centralized lubrication system, grease (grease) as a working medium can be classified into different levels of consistency according to its main characteristic index "working cone penetration (1/10 mm)". Because the high-consistency grease has high oil film strength and strong form retention capacity, the high-consistency grease is widely used as a lubricating medium for mechanical equipment. A multi-point plunger type electric grease pump is generally adopted in a lubricating system, lubricating oil is conveyed to each lubricating point of mechanical equipment at regular time and fixed quantity, and the working principle of the multi-point plunger type electric grease pump is basically that a plunger is driven to reciprocate through a motion conversion mechanism, so that the processes of grease suction and pressure feeding are completed. However, in actual use, the actual oil demand is different due to the difference in the size of the bearings at the lubrication points, the rotation speed load and the like, and the oil discharge amount of each lubrication point cannot be adjusted separately in the conventional multi-point plunger type electric grease pump, so that the oil consumption of some lubrication points is large, and the grease is wasted.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the multi-point electric grease pump with the adjustable discharge capacity can adjust the output discharge capacity of each plunger pump unit respectively according to the lubricating oil demand of each lubricating point of mechanical equipment, and avoid grease waste.

The technical scheme of the utility model includes pump base, the oil tank, drive mechanism, the plunger pump, program controller, drive mechanism is by the motor, the speed reducer, the eccentric wheel is constituteed, the motor is installed on the pump base, the eccentric wheel is installed on the speed reducer output shaft, the plunger pump comprises the pump body, the plunger and the oil suction rod, the pump body is equipped with inner chamber and oil suction port, oil suction port and oil tank inner chamber intercommunication, pump body inner chamber is through pump body hole and oil suction port intercommunication, plunger one end is touched with the eccentric wheel top, the outer disc of the other end and the interior pore wall of the pump body move the sealing fit, the oil suction rod left end center is equipped with the oil suction hole, this oil suction hole right-hand member is equipped with radial oil outlet, the outer disc of oil suction rod left end and the interior pore wall of the pump body move the sealing fit, the pump body inner chamber passes through the check valve and communicates with the oil-out; the method is characterized in that: be equipped with grease discharge capacity adjusting device at pump body inner chamber, grease discharge capacity adjusting device is by adjusting screw, swivel nut and lock nut are constituteed, swivel nut fixed mounting is on the wall in the pump body inner chamber, adjusting screw external screw thread and swivel nut hole screw-thread fit, the adjusting screw center is equipped with the oil storage chamber, oil storage chamber left end and pump body hole intercommunication, the right-hand member passes through radial through-hole and check valve access passage intercommunication, the oil absorption pole right-hand member stretches into the oil storage intracavity at adjusting screw center, set up the spring between oil absorption pole annular shoulder right side anchor ring and oil storage chamber bottom surface, oil absorption pole stop device is constituteed with the radial spacer pin of adjusting screw left end to oil absorption pole annular shoulder left side anchor ring, lock nut installs between swivel nut right-hand member and adjusting screw right-hand member external screw thread.

Preferably, the right end of the screw sleeve is provided with a limit screw, and the end part of the limit screw is matched with the right ring surface of the radial annular convex shoulder of the adjusting screw to form the adjusting screw limiting device.

Preferably, the oil storage cavity of the adjusting screw is communicated with an inlet channel of the overflow valve through a radial through hole, and an outlet of the overflow valve is communicated with an inner cavity of the oil tank through an oil return pipe.

Preferably, when the right end surface of the plunger moves rightwards to the maximum position, the plunger contacts with the left end surface of the oil suction rod. Air bubbles in grease in the oil storage cavity can be removed, and the oil outlet reliability is improved.

Preferably, a bearing is arranged between the eccentric wheel and the plunger, the inner ring of the bearing is fixedly connected with the eccentric wheel, and the outer circular surface of the outer ring of the bearing is in abutting contact with the left end of the plunger.

The utility model has the advantages of compared with the prior art, set up grease discharge capacity adjusting device at pump body inner chamber, can avoid the grease extravagant according to the grease discharge capacity of each oil-out of the corresponding regulation of the lubricating oil mass of each lubricating point.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the plunger pump of fig. 1 according to the present invention.

Fig. 3 is a schematic structural view of the sucker rod of fig. 2 according to the present invention.

In the figure: 1 retainer ring, 2 flat keys, 3 bearings, 4 tightening sleeves, 5 eccentric wheels, 6 output shafts, 7 program controllers, 8 speed reducers, 9 plungers, 10 pump bodies, 11 oil suction rods, 11.1 oil suction holes, 11.2 radial oil outlet holes, 12 radial limiting pins, 13 thread sleeves, 14 adjusting screws, 15 springs, 16 oil outlet pipes, 17 one-way valves, 18 limiting screws, 19 adjusting handles, 20 locking nuts, 21 overflow valves, 22 oil suction ports, 23 pump body inner holes, 24 oil outlet ports, 25 radial through holes, 26 oil storage cavities, 27 pump bases, 28 oil cavities and 29 oil tanks.

Detailed Description

The displacement-adjustable multipoint electric grease pump shown in fig. 1 comprises a pump base 27, an oil tank 29, a transmission mechanism, a plunger pump and a program controller 7, wherein the transmission mechanism comprises a motor, a speed reducer 8 and an eccentric wheel 5, the motor and the oil tank 29 are installed on the pump base 27, an inner cavity of the oil tank 29 is communicated with an oil cavity 28 of the pump base 27, the eccentric wheel 5 is installed on an output shaft 6 of the speed reducer 8, the eccentric wheel 5 is driven to rotate by the output shaft 6 of the speed reducer 8, the plunger pump comprises a pump body 10, a plunger 9 and an oil suction rod 11, the pump body 10 is fixedly installed on the pump base 27, the pump body 10 is provided with an inner cavity and an oil suction port 22, the oil suction port 22 is communicated with the oil cavity 28, the inner cavity of the pump body is communicated with the oil suction port 22 through a pump body inner hole 23, the pump body inner hole 23 comprises a large-diameter hole connected with the inner cavity of the pump body and a small-diameter hole communicated with the oil suction port 22, one end of the plunger 9 is in abutting contact with the eccentric wheel 5, an outer circular surface of the other end is in movable sealing fit with the small-diameter hole of the pump body inner hole 23, the oil suction rod 11.1 is arranged at the left end, and the right end of the oil suction hole 11.1 is arranged with a radial oil outlet 11.2, as shown in fig. 3. The outer circular surface of the oil suction rod 11 is in dynamic sealing fit with a small-diameter hole of a pump body inner hole 23, the inner cavity of the pump body is communicated with an oil outlet 24 through a one-way valve 17, a plurality of plunger pumps are uniformly arranged in the radial cylindrical direction of the eccentric wheel 5, and oil is output one by one along with the rotation of the eccentric wheel 5, so that multi-point oil supply is realized; the method is characterized in that: be equipped with grease discharge capacity adjusting device at the pump body inner chamber, grease discharge capacity adjusting device is by adjusting screw 14, swivel nut 13 and lock nut 20 are constituteed, swivel nut 13 fixed mounting is on the pump body inner chamber wall, swivel nut 13 can adopt external screw thread seal to install on pump body inner chamber wall, adjusting screw 14 external screw thread and swivel nut 13 hole screw-thread fit, adjusting screw 14 center is equipped with oil storage chamber 26, oil storage chamber 26 left end and the major diameter hole of pump body hole 23 communicate, the right-hand member passes through radial through-hole 25 and check valve 17 inlet channel intercommunication, oil suction rod 11 right-hand member stretches into in the oil storage chamber 26 at adjusting screw 14 center, set up spring 15 between oil suction rod 11 annular shoulder right side anchor ring and oil storage chamber 26 bottom surface, promote oil suction rod 11 to remove the restoration left, oil suction rod 11 annular anchor ring and the radial spacer 12 of adjusting screw 14 left end constitute oil suction rod stop device, restriction oil suction rod 11 displacement left side, prevent oil suction rod 11 left end excircle face shutoff oil suction port 22, guarantee that its oil suction port 11.1 is located oil suction port 22 right side, lock nut 20 installs between swivel nut 13 and the adjusting screw 14 right-hand member terminal surface, adjusting screw 14 internal screw moves the locking position respectively, adjusting screw prevents adjusting screw from moving in adjusting screw 14, adjusting screw from the left side, adjusting screw 19. When the plunger 9 moves to the leftmost end, the oil suction rod 11 is pushed by the spring 15 to move leftwards, the oil suction hole 11.1 is communicated with the oil suction opening 22, and the radial oil outlet hole 11.2 is sealed by the inner wall of the small-diameter hole of the inner hole 23 of the pump body; when the eccentric wheel 5 pushes the plunger 9 to move rightwards, the oil sucking rod 11 is pushed to move rightwards, when the radial oil outlet hole 11.2 of the oil sucking rod 11 moves to the large-diameter hole of the pump body inner hole 23, grease in the oil sucking hole 11.1 enters the oil storage cavity 26, and the grease in the oil storage cavity 26 is conveyed to the oil outlet 24 through the one-way valve 17 and the oil outlet pipe 16 along with the rightward movement of the plunger 9, as shown in fig. 2. When the adjusting screw 14 is adjusted leftwards, the volume between the oil suction hole 11.1 of the oil suction rod 11 and the oil suction port 22 is reduced, the amount of grease pressed into the oil storage chamber 26 when the plunger 9 moves rightwards each time is reduced, the adjustment of the amount of grease output from the oil outlet 24 is realized, and the requirement of the amount of grease at each lubricating point is met.

The right end of the screw sleeve 13 is provided with a limit screw 18, the end part of the limit screw 18 is matched with the right ring surface of the radial annular shoulder of the adjusting screw 14 to form an adjusting screw limiting device, the maximum right movement distance of the adjusting screw 14 is limited, and the maximum displacement is controlled.

As shown in figure 2, when the pressure of grease in the oil storage cavity 26 exceeds the set pressure value of the overflow valve 21, the overflow valve 21 is opened to discharge the grease in the oil storage cavity 26 to the oil cavity 28, so as to prevent the overpressure of the oil storage cavity 26.

The right end face of the plunger 9 moves rightwards to the maximum position and contacts with the left end face of the oil suction rod 11. Air bubbles in the grease in the oil storage cavity 26 can be removed, and the oil outlet reliability is improved.

A bearing 3 is arranged between the eccentric wheel 5 and the plunger 9, the inner ring of the bearing is fixedly connected with the eccentric wheel 5, and the outer circular surface of the outer ring of the bearing is in top contact with the left end of the plunger 9. Reduce the motion abrasion of the plunger 9 and improve the transmission efficiency. The bearing 3 is arranged on the outer circular surface of an eccentric wheel 5 by a retainer ring 1, the eccentric wheel 5 is fixedly arranged on an output shaft 6 by a flat key, an upper tightening sleeve 4 is arranged on the eccentric wheel 5, and the upper tightening sleeve 4 keeps the left end of a plunger 9 in abutting contact with the outer circular surface of the bearing 3.

Claims

1. A displacement-adjustable multi-point electric grease pump comprises a pump base (27), an oil tank (29), a transmission mechanism, a plunger pump and a program controller (7), wherein the transmission mechanism comprises a motor, a speed reducer (8) and an eccentric wheel (5), the motor and the oil tank (29) are installed on the pump base (27), the inner cavity of the oil tank (29) is communicated with an oil cavity (28) of the pump base (27), the eccentric wheel (5) is installed on an output shaft (6) of the speed reducer (8), the plunger pump comprises a pump body (10), a plunger (9) and an oil suction rod (11), the pump body (10) is fixedly installed on the pump base (27), the pump body (10) is provided with an inner cavity and an oil suction port (22), the oil suction port (22) is communicated with the oil cavity (28), the inner cavity of the pump body is communicated with the oil suction port (22) through an inner hole (23) of the pump body, the inner hole (23) of the pump body comprises a large-diameter hole connecting the inner cavity of the pump body and a small-diameter hole communicating the inner hole (22), one end of the plunger pump body (9) is in contact with the top of the outer circular hole (23), the oil suction hole of the outer circle, the small-diameter hole (11) of the pump body is in radial-sealing fit with the oil suction hole (11), the oil suction hole (11.1.1.2) of the central-sealing fit with the oil suction rod (11), the oil suction hole of the eccentric wheel (11), the inner cavity of the pump body is communicated with an oil outlet (24) through a one-way valve (17); the method is characterized in that: be equipped with grease discharge capacity adjusting device at pump body inner chamber, grease discharge capacity adjusting device is by adjusting screw (14), swivel nut (13) and lock nut (20) are constituteed, swivel nut (13) fixed mounting is on pump body inner chamber wall, adjusting screw (14) external screw thread and swivel nut (13) hole screw-thread fit, adjusting screw (14) center is equipped with oil storage chamber (26), the major diameter hole intercommunication of oil storage chamber (26) left end and pump body hole (23), the right-hand member passes through radial through-hole (25) and check valve (17) inlet channel intercommunication, inhale in oil pole (11) right-hand member stretches into oil storage chamber (26) at adjusting screw (14) center, set up spring (15) between oil pole (11) annular shoulder right side anchor ring face and oil storage chamber (26) bottom surface, inhale oil pole (11) annular shoulder left side anchor ring and radial spacer pin (12) constitution of adjusting screw (14) left end and inhale oil pole stop device, lock nut (20) are installed between swivel nut (13) right-hand member and adjusting screw (14) external screw right-hand member.

2. An adjustable displacement, multi-point electric grease pump according to claim 1 wherein: the right end of the threaded sleeve (13) is provided with a limit screw (18), and the end part of the limit screw (18) is matched with the right ring surface of the radial annular convex shoulder of the adjusting screw (14) to form an adjusting screw limiting device.

3. An adjustable displacement, multi-point electric grease pump according to claim 1 or 2 wherein: an oil storage cavity (26) of the adjusting screw rod (14) is communicated with an inlet channel of the overflow valve (21) through a radial through hole (25), and an outlet of the overflow valve (21) is communicated with an oil cavity (28) of the pump seat (27) through an oil return pipe.

4. An adjustable displacement, multi-point electric grease pump according to claim 3 wherein: when the plunger (9) moves to the maximum position rightwards, the right end surface of the plunger is contacted with the left end surface of the oil suction rod (11).

5. A displacement adjustable, multi-point electric grease pump according to claim 1, 2 or 4 wherein: a bearing (3) is arranged between the eccentric wheel (5) and the plunger (9), the inner ring of the bearing is fixedly connected with the eccentric wheel (5), and the outer circular surface of the outer ring of the bearing is in top contact with the left end of the plunger (9).

6. An adjustable displacement, multi-point electric grease pump according to claim 3 wherein: a bearing (3) is arranged between the eccentric wheel (5) and the plunger (9), the inner ring of the bearing is fixedly connected with the eccentric wheel (5), and the outer circular surface of the outer ring of the bearing is in top contact with the left end of the plunger (9).