CN219242331U

CN219242331U - Closed hydraulic system for crusher

Info

Publication number: CN219242331U
Application number: CN202223311214.XU
Authority: CN
Inventors: 孙晋法; 王红克; 雒官军; 孙华; 刘尚岭
Original assignee: Zhengzhou Xinyi Pneumatic Components Co ltd
Current assignee: Zhengzhou Xinyi Pneumatic Components Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-06-23
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a closed hydraulic system for a crusher, which comprises a box body and a cooling unit, wherein the right end of an upper partition plate arranged in the box body is provided with the cooling unit, the cooling unit comprises a shell and an oil passing pipe, the outer end of the oil passing pipe in the shell is sleeved with a heat exchange pipe, and the liquid inlet end and the liquid outlet end of the heat exchange pipe are connected with closed circulating cooling pipes. In the closed circulation process, the inside oil can pass through the cooling unit, when passing through, can lead out a part with heat through the radiating effect of oil pipe and heat radiation fins itself, the coolant liquid in the heat exchange tube that establishes through outer pot head can carry out the secondary cooling operation to the oil in the oil pipe simultaneously, can guarantee the cooling effect to the oil, guarantee the security that whole closed hydraulic system used, the coolant liquid after the heat dissipation can recycle to the circulative cooling intraductal, can cool off the coolant liquid in the circulative cooling intraductal through the semiconductor refrigeration piece this moment, can satisfy the use of long-time closed hydraulic system.

Description

Closed hydraulic system for crusher

Technical Field

The utility model belongs to the technical field of hydraulic drive systems, and particularly relates to a closed hydraulic system for a crusher.

Background

The closed hydraulic system is characterized in that an oil inlet pipe of the hydraulic pump is directly connected with an oil return pipe of the execution element, working liquid is in closed circulation in a pipeline of the system, the structure of the closed hydraulic system is compact, the contact opportunity with air is less, and the air is not easy to infiltrate into the system, so that the transmission stability is good, and the closed hydraulic system is mainly used for industrial equipment such as crushers, cranes and the like.

In the Chinese patent with reference to application number 202221556446.9, specifically disclosed is a closed hydraulic system of a hydraulic breaker, which comprises a box body and a circulating cooling mechanism, wherein an oil tank is arranged on one side of the lower end surface in the box body, and an installation assembly is arranged at the upper end in the box body. Adopt closed circuit structure, realized that entire system and outside adverse circumstances separate, heat dissipation that again can be abundant, use economic nature is better, and life-span is longer, and simultaneously when the oil supplementing quantity is not enough, can be at any time to the oil supplementing oil circuit oil supplementing, prevent that the oil quantity is not enough to lead to system and external environment's heat exchange not enough, lead to the holistic heat dissipation capacity of hydraulic system not enough, further improve the radiating effect.

However, the applicant found that the above heat dissipation is mainly performed by air cooling, but when the heat dissipation is performed by air cooling, the temperature of the surface of the oil pipe can only be blown away, and when the internal oil is in long-time circulation work, the heat can be continuously increased, and the long-time heat dissipation effect is difficult to be satisfied by the air cooling alone, and meanwhile, when the external environment temperature is higher, the normal heat dissipation requirement is also difficult to be satisfied by the air cooling.

In view of this, a closed hydraulic system for a crusher is proposed.

Disclosure of Invention

The utility model aims at: in order to solve the problems, a closed hydraulic system for a crusher is provided.

The technical scheme adopted by the utility model is as follows: the closed hydraulic system for the crusher comprises a box body and a cooling unit, wherein the right end of an upper partition plate arranged in the box body is provided with the cooling unit, the cooling unit comprises a shell and an oil passing pipe, the outer end of the oil passing pipe in the shell is sleeved with a heat exchange pipe, the liquid inlet end and the liquid outlet end of the heat exchange pipe are connected with a closed circulation cooling pipe, and one side of the circulation cooling pipe is provided with a semiconductor refrigerating sheet on the shell;

the right lower extreme of box installs the oil tank, the left end of oil tank is equipped with the oil pump that is linked together with the oil tank, the oil feed end of crossing oil pipe links to each other with hydraulic motor's play oil side through the pipeline.

In a preferred embodiment, the oil passing pipe comprises an oil passing pipe body, a plurality of radiating fins are integrally formed on the outer peripheral surface of the oil passing pipe body, and the oil passing pipe body, the heat exchange pipe and the circulating cooling pipe are all made of copper materials.

In a preferred embodiment, a cavity which can meet the flow of the circulating cooling liquid is arranged in the heat exchange tube, a heat dissipation silica gel layer is arranged at the outer end of the circulating cooling tube, and a liquid pump is arranged at the connecting part of the circulating cooling tube and the heat exchange tube.

In a preferred embodiment, high-pressure overflow valves are arranged at two ends of the oil pump, and a pressure filter is arranged at the upper-end liquid inlet part of the oil tank.

In a preferred embodiment, an accumulator is mounted at the left lower end of the tank, and is connected to the oil pump and the oil-supplementing oil circuit, and is supplied with oil by an oil-supplementing pump built in the oil pump.

In a preferred embodiment, the oil outlet end of the oil passing pipe is connected with the oil inlet part of the oil tank, and the oil outlet end of the oil pump is connected with the oil inlet side of the hydraulic motor to form a closed circuit.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. according to the utility model, in the closed circulation process, the heat of the oil can be partially led out through the heat dissipation effect of the oil passing pipe and the heat dissipation fins, and then the cooling liquid in the heat exchange pipe sleeved at the outer end is used for carrying out secondary cooling operation on the oil passing through the oil pipe, so that the cooling effect on the oil can be ensured, and the use safety of the whole closed hydraulic system is ensured.

2. In the utility model, the cooling liquid after heat dissipation can be recirculated into the circulating cooling pipe, and the cooling liquid in the circulating cooling pipe can be cooled by the semiconductor refrigerating plate at the moment, so that the long-time closed hydraulic system can be used.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a cross-sectional structure of a cooling unit of the present utility model;

FIG. 3 is a schematic diagram of an enlarged construction of the present utility model at A;

FIG. 4 is a schematic cross-sectional view of the tubing of the present utility model.

The marks in the figure: 1-box, 3-accumulator, 4-oil tank, 5-oil pump, 6-cooling unit, 61-liquid pump, 62-circulation cooling pipe, 63-semiconductor refrigerating sheet, 64-shell, 65-oil pipe, 651-heat radiation fin, 652-oil pipe body, 66-cavity, 67-heat exchange tube.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-4, a closed hydraulic system for a crusher comprises a box body 1 and a cooling unit 6, wherein the cooling unit 6 is installed at the right end of an upper partition plate arranged in the box body 1, the cooling unit 6 comprises a shell 64 and an oil passing pipe 65, the outer end of the oil passing pipe 65 in the shell 64 is sleeved with a heat exchange pipe 67, the liquid inlet end and the liquid outlet end of the heat exchange pipe 67 are connected with a closed circulation cooling pipe 62, in the closed circulation process, oil in the inner part can pass through the cooling unit 6, and when passing through, heat is led out partially through the heat dissipation effect of the oil passing pipe 65 and the heat dissipation fin 651, meanwhile, the cooling liquid in the heat exchange pipe 67 sleeved at the outer end can carry out secondary cooling operation on oil in the oil passing pipe 65, so that the cooling effect on the oil can be ensured, and the use safety of the whole closed hydraulic system is ensured.

Referring to fig. 1, an oil tank 4 is installed at the right lower end of a tank body 1, an oil pump 5 communicated with the oil tank 4 is arranged at the left end of the oil tank 4, the oil inlet end of an oil passing pipe 65 is connected with the oil outlet side of a hydraulic motor through a pipeline, the oil outlet end of the oil passing pipe 65 is connected with the oil inlet part of the oil tank 4, the oil outlet end of the oil pump 5 is connected with the oil inlet side of the hydraulic motor to form a closed loop, and through a combined closed hydraulic structure, the opportunity of contact with air can be reduced, the air is not easy to infiltrate into the system, and the stability of integral transmission can be ensured.

Referring to fig. 4, the oil passing pipe 65 includes an oil passing pipe body 652, and a plurality of heat radiation fins 651 are integrally formed on the outer peripheral surface of the oil passing pipe body 652, and the heat of the oil inside can be partially conducted out by the engagement of the oil passing pipe body 652 and the heat radiation fins 651.

The oil pipe 652 may be provided in a coil shape to secure a heat dissipation effect of the internal oil.

Referring to fig. 3, a cavity 66 satisfying the flow of the circulating cooling liquid is provided in the heat exchange tube 67, a heat dissipation silica gel layer is provided at the outer end of the circulating cooling tube 62, the liquid pump 61 is installed at the connection part of the circulating cooling tube 62 and the heat exchange tube 67, the oil passing tube 652, the heat exchange tube 67 and the circulating cooling tube 62 are made of copper materials, a semiconductor refrigerating plate 63 is installed on the shell 64 at one side of the circulating cooling tube 62, the cold end of the semiconductor refrigerating plate 63 is arranged near one side of the circulating cooling tube 62, the hot end of the semiconductor refrigerating plate 63 is located at the outer side of the shell 64, and the hot end of the semiconductor refrigerating plate 63 is connected with an external radiator through a pipeline penetrating through the box 1, the cooling liquid after heat dissipation can be recirculated into the circulating cooling tube 62, and at this time the cooling liquid in the circulating cooling tube 62 can be cooled by the semiconductor refrigerating plate 63, and the use of a long-time closed hydraulic system can be satisfied.

In this embodiment, the two ends of the oil pump 5 are provided with high-pressure relief valves, and the pressure peak value and the maximum pressure of the oil pump 5 can be maintained through the high-pressure relief valves, so that overload of the pump and the motor is prevented.

The upper end feed liquor portion of oil tank 4 installs pressure filter, can carry out filtering operation to the oil of circulation through pressure filter, guarantees the quality of whole cyclic utilization.

Referring to fig. 1, an accumulator 3 is installed at the left lower end of a tank 1, the accumulator 3 is connected with an oil pump 5 and an oil supplementing pressure oil circuit, the accumulator 3 supplies oil through an oil supplementing pump built in the oil pump 5, and when the oil supplementing amount is insufficient, the oil supplementing circuit can be supplemented with oil at any time through the action of the accumulator 3.

In the closed circulation process, the inside oil can pass through the cooling unit 6, when passing through, the radiating effect of the oil pipe 65 and the radiating fins 651 can be passed through, a part of heat is led out, meanwhile, the cooling liquid in the heat exchange pipe 67 sleeved at the outer end can carry out secondary cooling operation on the oil in the oil pipe 65, the cooling effect on the oil can be ensured, the use safety of the whole closed hydraulic system is ensured, the cooling liquid after heat dissipation can be recycled into the circulating cooling pipe 62, and at the moment, the cooling liquid in the circulating cooling pipe 62 can be cooled through the semiconductor refrigerating sheet 63, so that the use of the long-time closed hydraulic system can be met.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. Closed hydraulic system for breaker, including box (1) and cooling unit (6), its characterized in that: the cooling unit (6) is arranged at the right end of an upper partition plate arranged in the box body (1), the cooling unit (6) comprises a shell (64) and an oil passing pipe (65), a heat exchange pipe (67) is sleeved at the outer end of the oil passing pipe (65) in the shell (64), a closed circulating cooling pipe (62) is connected with a liquid inlet end and a liquid outlet end of the heat exchange pipe (67), and a semiconductor refrigerating sheet (63) is arranged on one side of the circulating cooling pipe (62) on the shell (64);

the oil tank (4) is installed to the lower right end of box (1), the left end of oil tank (4) is equipped with oil pump (5) that are linked together with oil tank (4), the oil feed end of crossing oil pipe (65) links to each other with hydraulic motor's play oil side through the pipeline.

2. A closed hydraulic system for a crusher as claimed in claim 1, wherein: the oil passing pipe (65) comprises an oil passing pipe body (652), a plurality of radiating fins (651) are integrally formed on the outer peripheral surface of the oil passing pipe body (652), and the oil passing pipe body (652), the heat exchange pipe (67) and the circulating cooling pipe (62) are made of copper materials.

3. A closed hydraulic system for a crusher as claimed in claim 1, wherein: the heat exchange tube (67) is internally provided with a cavity (66) which meets the flow of circulating cooling liquid, the outer end of the circulating cooling tube (62) is provided with a heat dissipation silica gel layer, and a liquid pump (61) is arranged at the connecting part of the circulating cooling tube (62) and the heat exchange tube (67).

4. A closed hydraulic system for a crusher as claimed in claim 1, wherein: the two ends of the oil pump (5) are provided with high-pressure overflow valves, and a pressure filter is arranged at the upper end liquid inlet part of the oil tank (4).

5. A closed hydraulic system for a crusher as claimed in claim 1, wherein: the left lower end of the tank body (1) is provided with an energy accumulator (3), the energy accumulator (3) is connected with an oil pump (5) and an oil supplementing oil circuit, and the energy accumulator (3) is supplied with oil through an oil supplementing pump arranged in the oil pump (5).

6. A closed hydraulic system for a crusher as claimed in claim 1, wherein: the oil outlet end of the oil passing pipe (65) is connected with the oil inlet part of the oil tank (4), and the oil outlet end of the oil pump (5) is connected with the oil inlet side of the hydraulic motor to form a closed loop.