Hydraulic synchronous lubricating pump
The hydraulic synchronous lubrication pump addresses the complexity and reliability issues of existing pumps by employing a two-way hydraulic cylinder design for stable, quantitative grease output, enhancing operational stability and reducing maintenance needs.
Patent Information
- Application Number
- CN202421215708.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-30
AI Technical Summary
Existing lubrication pumps for industrial equipment have complex structures, high manufacturing costs, and are prone to blockages and failures, especially in harsh environments, failing to provide quantitative lubrication efficiently.
A hydraulic synchronous lubrication pump with a two-way hydraulic cylinder and symmetric lubrication cylinders, utilizing a back-to-back structure and double-acting hydraulic cylinders, ensures stable operation and simple maintenance, achieving quantitative grease output through controlled piston rod movement.
The pump provides stable, quantitative grease output with a simplified design, reducing maintenance complexity and extending service life, suitable for various application environments.
Smart Images
Figure CN222230204U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lubrication pumps, in particular to a hydraulic synchronous lubrication pump. Background Art
[0002] In recent years, with the acceleration of mechanization, the use of industrial equipment such as engineering machinery, construction machinery, agricultural machinery, and wind turbines has increased year by year. In order to ensure the normal operation of mechanical equipment, a lubricating oil pump device is usually installed; the common lubricating pump is driven by a hydraulic single-acting cylinder at both ends to push the grease injection plunger, and the output grease is not quantitative. If there is a need for quantitative lubrication, a double-line distributor must be configured at the grease plunger outlet. This type of lubrication pump has a complex structure and high manufacturing cost. The slide valve part of the double-line distributor is prone to blockage and failure, and maintenance is cumbersome. This type of lubrication device has a short service life and cannot meet the use occasions with harsh application environments. Utility Model Content
[0003] The purpose of the present application is to provide a hydraulic synchronous lubrication pump, aiming to solve the problems in the prior art.
[0004] The embodiment of the present application provides a hydraulic synchronous lubrication pump, including a pump body, wherein a two-way hydraulic cylinder and a lubrication cylinder are installed at the top position of the pump body; there are two lubrication cylinders in total, which are symmetrically arranged on both sides of the two-way hydraulic cylinder, and are divided into a left lubrication cylinder and a right lubrication cylinder; the lubrication cylinder includes a cylinder body, an oil inlet, an oil outlet channel and a pressure relief channel; a two-way piston is arranged inside the two-way hydraulic cylinder; piston columns are connected on both sides of the two-way piston; the piston column extends to both sides and extends into the lubrication cylinder; one side of the lubrication cylinder is fixedly connected to the two-way hydraulic cylinder, and the other side is provided with a plug; a lubrication chamber is formed between the lubrication cylinder and the plug, which is divided into a left lubrication chamber and a right lubrication chamber; a hydraulic chamber is formed between the lubrication cylinder and the two-way hydraulic cylinder, which is divided into a left hydraulic chamber and a right hydraulic chamber.
[0005] Furthermore, an oil inlet is provided on the upper part of the lubrication cylinder body, and an oil outlet is provided on the bottom; the oil outlet is located at the connection between the lubrication oil cylinder and the plug; the oil inlet and the oil outlet are both connected to the lubrication chamber.
[0006] Furthermore, the bottom of the oil outlet is divided into two paths, namely an oil outlet channel and a pressure relief channel; a one-way valve is provided in the oil outlet channel, and a safety valve is provided in the pressure relief channel.
[0007] Furthermore, hydraulic channels are symmetrically arranged at the bottom of both sides of the bidirectional hydraulic cylinder; the hydraulic channels are respectively connected to the left and right hydraulic chambers, and the hydraulic channels extend downward to the outside of the pump body to form a hydraulic interface; the hydraulic interfaces are respectively a left hydraulic interface and a right hydraulic interface.
[0008] The beneficial effects of the utility model are as follows: the hydraulic synchronous lubrication pump adopts the principle of double-acting hydraulic cylinders, a back-to-back structure design, and does not use spring reset. The structure is stable in operation, small in size, and simple to install and maintain. The piston rod reciprocates in the lubrication cylinder according to the set stroke, and a volume difference is generated during the movement. The volume difference is the displacement of the lubricating oil, that is, the cross-sectional area of the piston rod × the set stroke; the stroke distance and the diameter of the piston rod can be directly determined in advance according to the use requirements to achieve quantitative output of grease to meet the needs of various application occasions. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is the overall structure diagram of the utility model.
[0010] Figure 2 It is a structural schematic diagram of the first oil discharge state.
[0011] Figure 3 It is a structural schematic diagram of the second oil discharge state.
[0012] Figure 4 It is a schematic diagram of the structure in the pressure relief state.
[0013] Figure 5 It is a schematic diagram of the principle structure of quantitative constant pressure output.
[0014] In the figure:
[0015] 1. Plug; 20. Left lubrication cylinder; 21. Right lubrication cylinder; 3. Bidirectional piston; 4. Pump body; 5. One-way valve; 6. Safety valve; 7. Oil inlet; 8. Piston rod; 9. Bidirectional hydraulic cylinder; 10. Oil outlet channel; 11. Pressure relief channel; 12. Left hydraulic interface; 13. Right hydraulic interface; 14. Oil outlet; 15. Right lubrication chamber; 16. Right hydraulic chamber; 17. Left hydraulic chamber; 18. Left lubrication chamber. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] like Figures 1 to 4A hydraulic synchronous lubrication pump shown in the figure comprises a pump body 4, wherein a two-way hydraulic oil cylinder 9 and a lubrication cylinder are installed at the top position of the pump body 4; there are two lubrication cylinders in total, which are symmetrically arranged on both sides of the two-way hydraulic oil cylinder 9, and are divided into a left lubrication cylinder 20 and a right lubrication cylinder 21; the lubrication cylinder comprises a cylinder body, an oil inlet 7, an oil outlet channel 10 and a pressure relief channel 11; a two-way piston 3 is arranged inside the two-way hydraulic oil cylinder 9; piston columns 8 are connected on both sides of the two-way piston 3; the piston column 8 is extended to both sides and extends into the lubrication cylinder; the diameter of the piston column 8 is consistent with the inner diameter of the lubrication cylinder body, one side of the lubrication cylinder is fixedly connected to the two-way hydraulic oil cylinder 9, and the other side is provided with a plug 1; a lubrication chamber is formed between the lubrication cylinder and the plug, which is divided into a left lubrication chamber 18 and a right lubrication chamber 15; a hydraulic chamber is formed between the lubrication cylinder and the two-way hydraulic oil cylinder, which is divided into a left hydraulic chamber 17 and a right hydraulic chamber 16; as shown Figure 5 As shown, the boosting principle of the device is as follows: the oil pressure provided by the hydraulic cylinder acts on the bidirectional piston 3 to generate a force F 活 =P 液 ×A S活 ; where P 液 A is the pressure on the oil inlet side of the hydraulic cylinder; S活 is the cross-sectional area of the bidirectional piston 3; since the piston rod 8 is directly connected to the bidirectional piston, the plunger will be F 柱 =F 活 The output oil pressure of the lubricating oil is P 脂 =F 柱 / A S柱 ;;A S柱 is the cross-sectional area of the piston column 8; because the force-bearing cross-sectional area of the bidirectional piston and the piston column is different, then: the pressure ratio i=P 脂 / P 液 =(F 柱 / A S柱 ) / (F 活 / A S活 ) is simplified to: i = A S活 / A S柱 .
[0018] The lubrication cylinder body is provided with an oil inlet 7 at the top and an oil outlet 14 at the bottom; the oil outlet 14 is located at the connection between the lubrication cylinder and the plug 1; the oil inlet 7 and the oil outlet 14 are both connected to the lubrication chamber; the oil inlet 7 is a normally open interface connected to an external oil storage device.
[0019] The bottom of the oil outlet 14 is divided into two paths, namely an oil outlet channel 10 and a pressure relief channel 11 ; a one-way valve 5 is provided in the oil outlet channel 10 , and a safety valve 6 is provided in the pressure relief channel 11 .
[0020] The bottom of both sides of the bidirectional hydraulic cylinder 9 are symmetrically provided with hydraulic channels; the hydraulic channels are respectively connected to the left and right hydraulic chambers, and the hydraulic channels extend downward to the outside of the pump body 4 to form a hydraulic interface; the hydraulic interfaces are respectively a left hydraulic interface 12 and a right hydraulic interface 13.
[0021] The two-way piston 3 and the piston column 8 make reciprocating motion under the hydraulic drive in different directions, so that the pump body 4 presents three oil outlet states; the first state is that when the hydraulic oil enters the right hydraulic chamber 16 from the right hydraulic interface 13, the two-way piston 3 and the piston column 8 move to the left, squeezing the hydraulic oil in the left hydraulic chamber 17 to be discharged from the left hydraulic interface 12; the right piston rod 8 moves to the left to open the oil inlet 7 of the right lubrication cylinder 21, and the lubricating oil flows into the right lubrication chamber 16; at the same time, the volume of the left lubrication chamber 18 becomes smaller under the action of the two-way piston 3 and the piston rod 8, thereby generating pressure to overcome the spring force of the one-way valve 5, so that the lubricating oil in the chamber flows downward from the oil outlet channel 10; the second state is that the hydraulic oil enters the left hydraulic chamber 17 from the left hydraulic interface 12 When the hydraulic chamber 17 is opened, the two-way piston 3 and the piston column 8 move to the right, squeezing the hydraulic oil in the right hydraulic chamber 16 to be discharged from the right hydraulic interface 13; the left piston rod 8 moves to the right to open the oil inlet 7 of the left lubrication cylinder 20, and the lubricating oil flows into the left lubrication chamber 18; the volume of the right lubrication chamber 15 becomes smaller under the action of the two-way piston 3 and the piston rod 8, thereby generating pressure to overcome the spring force of the one-way valve 5, so that the lubricating oil flows downward from the oil outlet channel 10; the state three is the pressure relief state, when the oil pressure in the lubrication cylinder is higher than the set value, the safety valve 6 opens, and the lubricating oil in the lubrication chamber is discharged from the pressure relief channel 11; until the oil pressure in the cylinder is below the set pressure value, the safety valve 6 is closed, and the lubricating oil can be normally transported from the oil outlet channel 10.
[0022] The piston rod 8 can be driven by the bidirectional piston 3 according to the set stroke (L 行 ), reciprocating in the lubrication cylinder to deliver grease to the lubrication point. During the movement, a volume difference will be generated, and this volume difference is the displacement of the lubrication pump, namely: Q 脂 =A S柱 ×L 行 . Where L 行 The length of Figure 5 As shown; A S柱 The cross-sectional area of the piston rod; the stroke of the piston rod 8 is the running distance of the end of the piston rod 8 in the lubrication chamber, which is related to the length of the rod body and can be set to a fixed value in advance and will not change during operation; the diameter of the piston rod 8 is also a fixed value. Therefore, the grease discharged in each operating cycle is a fixed value, that is, the grease is output quantitatively. We can set the length and diameter of the piston rod 8 in advance according to different working environment requirements to meet different lubrication requirements.
[0023] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A hydraulic synchronous lubrication pump, comprising a pump body, characterized in that: A two-way hydraulic cylinder and a lubrication cylinder are installed at the top position of the pump body; there are two lubrication cylinders in total, which are symmetrically arranged on both sides of the two-way hydraulic cylinder, and are divided into a left lubrication cylinder and a right lubrication cylinder; the lubrication cylinder includes a cylinder body, an oil inlet, an oil outlet channel and a pressure relief channel; a two-way piston is arranged inside the two-way hydraulic cylinder; piston columns are connected on both sides of the two-way piston; the piston column extends to both sides and extends into the lubrication cylinder; one side of the lubrication cylinder is fixedly connected to the two-way hydraulic cylinder, and the other side is provided with a plug; a lubrication chamber is formed between the lubrication cylinder and the plug, which is divided into a left lubrication chamber and a right lubrication chamber; a hydraulic chamber is formed between the lubrication cylinder and the two-way hydraulic cylinder, which is divided into a left hydraulic chamber and a right hydraulic chamber.
2. The hydraulic synchronous lubrication pump according to claim 1, characterized in that: The upper part of the lubricating cylinder body is provided with an oil inlet, and the bottom part is provided with an oil outlet; the oil outlet is located at the connection between the lubricating oil cylinder and the plug; the oil inlet and the oil outlet are both connected to the lubricating chamber.
3. The hydraulic synchronous lubrication pump according to claim 2, characterized in that: The bottom of the oil outlet is divided into two paths, namely an oil outlet channel and a pressure relief channel; a one-way valve is arranged in the oil outlet channel, and a safety valve is arranged in the pressure relief channel.
4. The hydraulic synchronous lubrication pump according to claim 1, characterized in that: Hydraulic channels are symmetrically arranged at the bottom of both sides of the bidirectional hydraulic cylinder; the hydraulic channels are respectively connected to the left and right hydraulic chambers, and the hydraulic channels extend downward to the outside of the pump body to form a hydraulic interface; the hydraulic interfaces are respectively a left hydraulic interface and a right hydraulic interface.