Plunger synchronous lubricating device

Abstract

The utility model relates to the technical field of lubricating devices, in particular to a plunger synchronous lubricating device which comprises a main body valve block and hydraulic systems on the two sides. Two grease inlets and two grease outlets are formed in the main body valve block; the hydraulic system is composed of two hydraulic cylinders which are symmetrically arranged; the hydraulic cylinder comprises an external end cover and an internal movable plunger; an inner sleeve is arranged on the connecting side of the end cover; the movable plunger is connected into the inner sleeve in a sliding mode. A hydraulic oil port is formed in the tail part of the end cover; the connecting side of the end cover is hermetically connected with the main body valve block; the inner sleeve is fixed in the main body valve block; working oil cavities, namely a first working oil cavity and a second working oil cavity, are formed between the inner sleeve and the main body valve block; the working oil cavities are respectively communicated with the corresponding oil inlets and outlets; the utility model has the advantages of low failure rate, long durability and wide application range, avoids faults caused by electrical control, and can be applied to occasions needing high-pressure and large-flow lubrication.

Description

Technical Field

[0001] The utility model relates to the technical field of lubrication devices, in particular to a plunger synchronous lubrication device. Background Art

[0002] Existing lubrication pumps are typically powered by electric motors, converting electrical energy into mechanical energy to drive the pump. This offers advantages such as a high degree of automation and reduced manual operation. However, electric lubrication pumps have certain temperature requirements; excessively high or low temperatures can affect their performance. They rely heavily on external stabilization circuits, are prone to failure, have low durability, and are difficult to troubleshoot and repair. Their installation environment and location require careful consideration. Therefore, electric lubrication pumps are generally installed in locations with a suitable ambient temperature, low dust and vibration, and are easily adjustable, inspected, maintained, and lubricated. They are not suitable for demanding environments such as high-pressure, high-flow lubrication, severely limiting their scope of use. Furthermore, improper installation and maintenance can lead to equipment failure and increase repair costs. This can extend equipment downtime and impact production efficiency. Utility Model Content

[0003] The purpose of this application is to provide a plunger synchronous lubrication device, aiming to solve the problems in the prior art.

[0004] and a control valve having a check valve in it, and a check valve in it, and a check valve in it.

[0005] Furthermore, the left hydraulic port and the right hydraulic port are connected to port A and port B of the electromagnetic reversing valve assembly.

[0006] Furthermore, an O-ring is provided on the contact surface between the movable plunger and the inner sleeve; an O-ring is provided on the contact surface between the end cover and the main valve block; and an ED ring is provided at the connection between the inner sleeve and the main valve block.

[0007] Furthermore, a compression spring is provided on the outside of the movable plunger; and the tail of the movable plunger is fixedly connected to the top cover.

[0008] Furthermore, two pressure gauge interfaces are provided on the top of the main valve block.

[0009] The beneficial effects of this utility model are as follows: the hydraulic oil propels the internal plunger toward the interior of the device. The electromagnetic reversing valve then switches the hydraulic oil inlet and return ports of the synchronous hydraulic lubrication pump valve body. Each movement of the synchronous hydraulic lubrication pump valve body plunger extrudes a fixed amount of grease toward the oil outlet. Compared to electric lubrication pumps, this utility model has a lower failure rate and longer durability of the lubrication valve body. It also avoids failures caused by electrical control. It can be used in applications requiring high-pressure, high-flow lubrication, such as heavy machinery and equipment. It is less susceptible to environmental impact and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of the utility model.

[0011] Figure 2 This is a schematic diagram of the oil circuit when the hydraulic oil enters from the left and exits from the right.

[0012] Figure 3 This is a schematic diagram of the oil circuit when the hydraulic oil exits from the left and enters from the right.

[0013] Figure 4 This is the connection circuit diagram of the two-position four-way solenoid reversing valve in the initial state.

[0014] In the picture:

[0015] 1. Compression spring; 2. End cover; 3. Main valve block; 4. Top cover; 5. Movable plunger; 6. Inner sleeve; 7. O-ring; 8. ED ring; 9. First grease port; 10. Second grease port; 11. First working oil chamber; 12. Second working oil chamber; 13. Left hydraulic port; 14. Right hydraulic port; 15. Movable oil chamber; 16. First grease outlet; 17. Second grease outlet. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] like Figure 1The plunger synchronous lubrication device shown in the figure comprises a main valve block 3 and hydraulic systems on both sides; the main valve block 3 is provided with two grease inlets and two grease outlets, namely a first grease inlet 9, a first grease outlet 16, a second grease inlet 10 and a second grease outlet 17; the first grease outlet 16 and the second grease outlet 17 are provided with a one-way valve to prevent the oil from flowing in the opposite direction; the hydraulic system is composed of two symmetrically arranged hydraulic cylinders; the hydraulic cylinder comprises an external end cover 2 and an internal movable plunger 5; the connection side of the end cover 2 is provided with an inner sleeve 6; the movable plunger 5 is slidably connected to the inside of the inner sleeve 6; the tail of the end cover 2 is provided with a hydraulic oil port; the The hydraulic oil port is located on the left and right sides of the hydraulic system, and is divided into a left hydraulic port 13 and a right hydraulic port 14; the connection side of the end cover 2 is sealed and connected to the main valve block 3; the inner sleeve 6 is fixed in the main valve block 3; a working oil chamber is formed between the inner sleeve 6 and the main valve block 3, which are the first working oil chamber 11 and the second working oil chamber 12 respectively; the working oil chambers are respectively connected to the corresponding grease inlets and outlets; the first working oil chamber 11 is connected to the first grease inlet 9 and the first grease outlet 16, and the second working oil chamber 12 is connected to the second grease inlet 10 and the second grease outlet 17; the inside of the end cover 2 is a movable oil chamber 15; the movable oil 15 is connected to the hydraulic oil port.

[0018] The left hydraulic port 13 and the right hydraulic port 14 are connected to the A port and the B port of the electromagnetic reversing valve assembly; the hydraulic oil inlet and return states on both sides of the synchronous hydraulic lubrication pump valve body are switched through the electromagnetic reversing valve assembly; the hydraulic oil in the tank is pumped to the main oil inlet of the electromagnetic reversing valve through the oil circuit, and the reversing valve will switch the oil circuit according to the set parameters. The system sets a fixed reversing time. For example, when the left hydraulic port is the oil inlet and the right hydraulic port is the oil return port at the beginning, the left hydraulic port of the hydraulic system is connected to the A port, and the right hydraulic port is connected to the B port. The left hydraulic port enters the hydraulic port for pressurization, and the right hydraulic port discharges the hydraulic oil for pressure relief. When the system reaches the set reversing time, the left hydraulic port is the oil return port and the right hydraulic port is the oil inlet, the left hydraulic port is disconnected from A and connected to the B port, the right hydraulic port is disconnected from B and connected to the A port, so that the left hydraulic port discharges the hydraulic oil for pressure relief, and the right hydraulic port enters the hydraulic port for pressurization.

[0019] The electromagnetic reversing valve generally adopts a two-position four-way electromagnetic reversing valve, which has two working positions and four oil ports, generally two inlet and two outlet. Figure 4 As shown, P is the oil inlet, T is the oil return port, A\B are connected to the upper and lower chambers of the actuator respectively. In the initial state position, P is connected to port A, T is connected to port B, and in the power-on state position, P is connected to port B, T is connected to port A.

[0020] Two O-rings 7 are provided on the contact surface between the movable plunger 5 and the inner sleeve 6 to prevent hydraulic oil in the hydraulic system from entering the working oil chamber through the inner sleeve 6 and mixing with the grease, thereby reducing lubrication efficiency and wasting hydraulic oil in the hydraulic system. An O-ring 7 is also provided on the interface between the end cap 2 and the main valve block 3. An ED ring 8 is provided at the junction of the inner sleeve 6 and the main valve block 3 to prevent leakage at the joints under high pressure.

[0021] A compression spring 1 is provided on the outside of the movable plunger 5 ; the tail of the movable plunger 5 is fixedly connected to the top cover 4 , and the top cover 4 can move in the movable oil chamber 15 along with the movable plunger 5 .

[0022] The top of the main valve block 3 is provided with two pressure gauge interfaces (not shown in the figure) for detecting the internal pressure of the oil chamber.

[0023] The utility model provides a method for using the plunger synchronous lubrication device. The left hydraulic port 13 and the right hydraulic port 14 on both sides of the hydraulic system of the device are connected to the A port and the B port of the electromagnetic reversing valve assembly. The electromagnetic reversing valve assembly is used to switch the hydraulic oil inlet and return states of the hydraulic cylinders on both sides, and finally control the inlet and outlet of the lubricating oil: Figure 2 As shown, when the left hydraulic port 13 is the oil inlet and the right hydraulic oil 14 is the oil outlet, the hydraulic oil enters the active oil chamber 15 from the left hydraulic port 13, pushing the top cover 4 and the active plunger 5 to be compressed inward, squeezing the first working oil chamber 11, and the lubricating oil in the first working oil chamber 11 is discharged from the first grease outlet 16 on the main valve block 3, completing the oil discharge work; at the same time, the compression spring 1 in the right hydraulic cylinder pushes the active plunger 5 to reset in the outward direction, and the hydraulic oil in the right active oil chamber 15 flows out from the right hydraulic port 14. At the same time of resetting, the external lubricating oil enters the second working oil chamber 12 from the second grease inlet 10 on the main valve block 3, completing the oil replenishment action; then the electromagnetic reversing valve assembly changes the oil inlet and outlet states of the left and right hydraulic ports, as shown Figure 3 As shown, it is changed to left out and right in, and the above actions are performed in opposite directions. The lubricating oil enters the first working oil chamber 11 from the first grease inlet 9, and the lubricating oil in the second working oil chamber 12 flows out from the second grease outlet 17; the above two states are repeated alternately to achieve the oil supply effect; during the initial operation, since there is no grease in the working oil chamber, the movable plunger 5 is initially actuated, and it is normal that there is no grease at the grease outlet. The plunger stroke is adjustable from 5 to 10 mm, and different amounts of grease can be squeezed out according to different plunger strokes.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A plunger synchronous lubrication device, characterized in that:

19. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 18, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod has a round shank to contact with said linking rod.

2. The plunger synchronous lubrication device according to claim 1, characterized in that: The left hydraulic port and the right hydraulic port are connected to the A port and the B port of the electromagnetic reversing valve assembly.

3. The plunger synchronous lubrication device according to claim 1, characterized in that: An O-type sealing ring is provided on the contact surface between the movable plunger and the inner sleeve; an O-type sealing ring is provided on the contact surface between the end cover and the main valve block; and an ED ring is provided at the connection between the inner sleeve and the main valve block.

4. The plunger synchronous lubrication device according to claim 1, characterized in that: A compression spring is provided on the outside of the movable plunger; and the tail of the movable plunger is fixedly connected to the top cover.

5. The plunger synchronous lubrication device according to claim 1, characterized in that: Two pressure gauge interfaces are provided on the top of the main valve block.

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