阅读说明：本技术 采煤机液压系统的内置集成式冷却过滤消泡装置 (Built-in integrated cooling, filtering and defoaming device of coal mining machine hydraulic system ) 是由 赵灵 李小朋 赵晓蔚 王雪松 杨亚东 李瑞锋 张凌燕 刘泽平 成跃 王龙宇 王丽 于 2021-09-02 设计创作，主要内容包括：本发明公开了一种采煤机液压系统的内置集成式冷却过滤消泡装置,包括：螺旋翅片管冷却器、集成壳体、集中冷却部、层流过滤部、减振缓冲带、液压系统总回油口、斑卓块,集成壳体包括法兰、外壳、消泡层、形成层流过滤部的层流过滤层、端头座、减振缓冲槽、斑卓块接口、冷却器接口；螺旋翅片管冷却器通过冷却器接口安装在集成壳体内,液压系统总回油口连通于采煤机液压系统的集油阀块并由斑卓块连接到斑卓块接口。该装置集成了冷却、回油压力缓冲、消泡、沉淀、过滤的多重功效作用,使液压系统的回油能够在集中冷却部内第一时间得到集中冷却,确保回流到液压油箱内的油品质量,保证了液压系统的良好运行。(The invention discloses a built-in integrated cooling, filtering and defoaming device of a hydraulic system of a coal mining machine, which comprises: the integrated shell comprises a flange, a shell, a defoaming layer, a laminar flow filtering layer forming the laminar flow filtering part, an end head seat, a vibration reduction buffer groove, a spot upper and lower block interface and a cooler interface; the spiral finned tube cooler is installed in the integrated shell through a cooler interface, and a main oil return port of the hydraulic system is communicated with an oil collecting valve block of a hydraulic system of the coal mining machine and is connected to the patch interface through a patch interface. The device has integrateed cooling, oil return pressure buffering, defoaming, deposit, filterable multiple efficiency effect, makes hydraulic system's oil return obtain concentrated cooling the very first time in concentrated cooling portion, ensures to flow back the oil quality in the hydraulic tank, has guaranteed hydraulic system's good operation.)

1. The utility model provides a coal-winning machine hydraulic system's built-in integrated form cooling filters fire fighting equipment which characterized in that includes: spiral finned tube cooler, integrated casing, concentrated cooling portion, laminar flow filter portion, damping buffering area, hydraulic system total oil return opening, the tall and erect piece of spot, wherein:

the integrated shell comprises a flange, a shell, a defoaming layer, a laminar flow filtering layer forming the laminar flow filtering part, an end head seat, a vibration reduction buffer groove, a spot and rail block interface and a cooler interface, wherein the spot and rail block interface and the cooler interface are arranged on the flange;

the spiral finned tube cooler is installed in the integrated shell through the cooler interface, the main oil return port of the hydraulic system is communicated with an oil collecting valve block of a hydraulic system of the coal mining machine and is connected to the patch interface through the patch, and the oil collecting valve block collects oil return pipelines of all oil circuit execution components of the hydraulic system into one path;

the end socket is installed the end of keeping away from the flange of integrated casing, the damping dashpot sets up on the end socket seat, the damping buffering area is installed in the damping dashpot.

2. The built-in integrated cooling, filtering and defoaming device for hydraulic system of coal mining machine as claimed in claim 1, wherein said housing comprises a large diameter portion at one side of said flange and a small diameter portion at one side remote from said flange, said defoaming layer comprises a first defoaming layer and a second defoaming layer, said laminar flow filtering layer comprises a first laminar flow filtering layer and a second laminar flow filtering layer, said first defoaming layer is disposed at inner periphery of said large diameter portion, said second defoaming layer is disposed at inner periphery of said small diameter portion, said first laminar flow filtering layer is disposed at inner cavity of said large diameter portion, and said second laminar flow filtering layer is disposed at inner cavity of said small diameter portion.

3. The on-board integrated cooling, filtering and defoaming apparatus of a shearer hydraulic system as set forth in claim 2, wherein the space of the large diameter portion other than the space occupied by the spiral finned tube cooler and the first flow-through filter layer forms the concentrated cooling portion of the integrated cooling, filtering and defoaming apparatus.

4. The built-in integrated cooling, filtering and defoaming device of a hydraulic system of a coal mining machine according to claim 2, wherein the head base is mounted at the end of the small diameter portion.

5. The internal integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine according to any one of claims 1 to 4, wherein the spiral finned tube cooler comprises a cooling head, a support frame, a spiral finned tube, and a cooling water inlet and a cooling water outlet which are arranged on the cooling head.

6. The internal integrated cooling, filtering and defoaming device for the hydraulic system of the coal mining machine as claimed in claim 5, wherein the spiral finned tube cooler is installed in a spiral finned tube intrusion mode, and the spiral finned tube intrudes into oil in an oil tank of the hydraulic system.

Technical Field

The invention belongs to the technical field of coal mine excavation machinery, and particularly relates to a built-in integrated cooling, filtering and defoaming device of a hydraulic system of a coal mining machine.

Background

The whole structure of the coal mining machine is compact, particularly the machine body of the thin seam coal mining machine is short and thin, the effective space which can be utilized by a hydraulic pump station outside the coal mining machine is relatively narrow and limited by limited space, and the hydraulic pump station outside the coal mining machine cannot be externally provided with a cooling system, so that most of the hydraulic systems of the coal mining machine adopt the built-in cooling system.

As shown in fig. 1 and 2, the hydraulic system of the coal mining machine generally comprises a hydraulic oil tank 1, a liquid level meter 2, an oil suction filter 3, an air cleaner 4, a filter 5, a multi-way valve oil return pipeline 6, a cooler 7, a brake oil return pipeline 8, a motor-driven oil filling motor pump oil return pipeline 9 and the like. The cooler 7 built in the hydraulic oil tank 1 includes a cooling head 71, a support frame 72, a cooling pipe 73, a cooling water inlet 74, and a cooling water outlet 75, wherein the cooling pipe 73 is a light pipe, is formed by bending a copper pipe or a stainless steel pipe, is inserted into the hydraulic oil tank 1, and is introduced with cooling water through the cooling water inlet 74 and the cooling water outlet 75 to cool oil in the hydraulic oil tank 1.

Although a cooler and a filter are arranged in a hydraulic system of a coal mining machine in the prior art, each component is independently arranged, has a single function, is sequentially installed in series, and has the advantages of low integration degree, large and complex arrangement space, large occupied space and high failure rate; high-temperature return oil flows of each oil path execution part of the hydraulic system respectively and dispersedly flow into the oil tank from different positions of the oil tank, so that the oil tank connecting pipelines are various and complex, long in span, inconvenient to maintain and obvious in potential safety hazard; the cooling pipe is a light pipe such as a copper pipe or a stainless steel pipe, the heat dissipation efficiency is limited, high-temperature return oil flows of the oil circuit execution components of the hydraulic system respectively flow into the oil tank from different positions of the oil tank in a dispersing manner, and the cooler always aims at cooling the oil liquid of the whole oil tank, so that the high-temperature return oil flows of the execution components cannot be rapidly cooled in time, intensively and efficiently, and the oil liquid cooling efficiency of the whole hydraulic system is low.

In addition, coal-winning machine hydraulic system among the prior art still lacks the fire fighting equipment, and hydraulic system returns the oil in-process, because fluid impact or partial pipeline are sealed inseparable, return oil fluid can produce foam and bubble, sneaks into fluid, increases gear pump suction and can lead to the operation unstability and the phenomenon of gettering, influences hydraulic system normal operating.

Disclosure of Invention

In order to solve some or all technical problems in the prior art, the invention provides a built-in integrated cooling, filtering and defoaming device for a hydraulic system of a coal mining machine, which comprises: spiral finned tube cooler, integrated casing, concentrated cooling portion, laminar flow filter portion, damping buffering area, hydraulic system total oil return opening, the tall and erect piece of spot, wherein:

the integrated shell comprises a flange, a shell, a defoaming layer, a laminar flow filtering layer forming the laminar flow filtering part, an end head seat, a vibration reduction buffer groove, a spot and rail block interface and a cooler interface, wherein the spot and rail block interface and the cooler interface are arranged on the flange;

the spiral finned tube cooler is installed in the integrated shell through the cooler interface, the main oil return port of the hydraulic system is communicated with an oil collecting valve block of a hydraulic system of the coal mining machine and is connected to the patch interface through the patch, and the oil collecting valve block collects oil return pipelines of all oil circuit execution components of the hydraulic system into one path;

the end socket is installed the end of keeping away from the flange of integrated casing, the damping dashpot sets up on the end socket seat, the damping buffering area is installed in the damping dashpot.

Further, in the above built-in integrated cooling, filtering and defoaming device for a hydraulic system of a coal mining machine, the housing includes a large diameter portion located on one side of the flange and a small diameter portion located on one side away from the flange, the defoaming layer includes a first defoaming layer and a second defoaming layer, the laminar flow filtering layer includes a first laminar flow filtering layer and a second laminar flow filtering layer, the first defoaming layer is disposed on the inner periphery of the large diameter portion, the second defoaming layer is disposed on the inner periphery of the small diameter portion, the first laminar flow filtering layer is disposed in the inner cavity of the large diameter portion, and the second laminar flow filtering layer is disposed in the inner cavity of the small diameter portion.

Further, in the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine as described above, the space of the large diameter portion other than the space occupied by the spiral fin tube cooler and the first layer flow-through filter layer forms the concentrated cooling portion of the integrated cooling, filtering and defoaming device.

Further, in the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine, the head seat is mounted at the tail end of the small-diameter part.

Further, in the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine, the spiral finned tube cooler comprises a cooling head, a support frame, a spiral finned tube, and a cooling water inlet and a cooling water outlet which are arranged on the cooling head.

Further, in the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine, the spiral finned tube cooler adopts a spiral finned tube intrusive installation mode, and the spiral finned tube intrudes into oil liquid in an oil tank of the hydraulic system.

The device adopts a built-in integrated design, integrates multiple effects of cooling, oil return pressure buffering, defoaming, precipitation and filtering, does not need to be separately configured with each monomer functional component, has short span of a connecting pipeline, high integration and compact structure, saves space to the maximum extent, and has low cost, convenient maintenance, powerful functions and high system stability; the setting of integrated casing can protect the spiral finned tube cooler to avoid the collision of external object to destroy, can make hydraulic system's oil return obtain timely, concentrate, efficient cooling in concentrating the cooling portion very first time simultaneously, can also effectively cushion and clear up oil return pressure.

In addition, by utilizing the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine, the cooled return oil flows back into the hydraulic oil tank after defoaming, precipitating and filtering actions of the defoaming layer and the laminar flow filtering layer arranged in the integrated shell, so that impurities in the total return oil of the hydraulic system are filtered, and foam and impurities generated by a large amount of return oil of the hydraulic system are avoided, thereby avoiding the emptying and blockage of a gear pump caused by the suction of foam air and impurities by the oil absorption filter, ensuring the quality of oil products flowing back into the hydraulic oil tank and ensuring the good operation of the hydraulic system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:

FIG. 1 is a schematic diagram of a prior art shearer hydraulic system configuration;

fig. 2a and 2b are schematic structural views of an in-line cooler in a hydraulic system of a prior art shearer loader, wherein fig. 2b is a side view of fig. 2 a;

fig. 3 is a schematic diagram of the construction of a hydraulic system of a coal mining machine using a built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine of the present invention;

fig. 4a and 4b are schematic structural diagrams of a built-in integrated cooling, filtering and defoaming device of a hydraulic system of a coal mining machine according to the present invention, wherein fig. 4b is a side view of fig. 4 a;

fig. 5a and 5b are schematic structural diagrams of a cooler in a built-in integrated cooling, filtering and defoaming device of a hydraulic system of a coal mining machine according to the present invention, wherein fig. 5b is a side view of fig. 5 a;

fig. 6a and 6b are schematic structural views of an integrated housing in a built-in integrated cooling, filtering and defoaming device of a hydraulic system of a coal mining machine according to the present invention, wherein fig. 6b is a side view of fig. 6 a.

Description of reference numerals:

1-a hydraulic oil tank, 2-a liquid level meter, 3-an oil absorption filter, 4-an air filter, 5-a filter, 6-a multi-way valve oil return pipeline, 7-a cooler, 71-a cooling head, 72-a support frame, 73-a cooling pipe, 74-a cooling water inlet, 75-a cooling water outlet, 8-a brake oil return pipeline and 9-a motor-driven oil filling motor pump oil return pipeline;

1-steel wire rope reel, 2-pulley, 3-duplex reel, 4-steel wire rope and 5-load hanger;

10-a hydraulic oil tank, 11-a liquid level meter, 12-an oil absorption filter, 13-an air filter, 14-an integrated cooling, filtering and defoaming device, 15-an oil collecting valve block, 16-a multi-way valve oil return pipeline, 17-a brake oil return pipeline and 18-a motor-driven oil filling motor pump oil return pipeline;

141-spiral finned tube cooler, 142-integrated shell, 143-concentrated cooling part, 144-laminar flow filtering part, 145-vibration reduction buffer zone, 146-hydraulic system total oil return port and 147-spot tall block;

1411-a cooling head, 1412-a support frame, 1413-a spiral finned tube, 1414-a cooling water inlet and 1415-a cooling water outlet;

1421-flange, 1422-shell, 1422.1-large diameter portion, 1422.2-small diameter portion, 1423-defoaming layer, 1423.1-first defoaming layer, 1423.2-second defoaming layer, 1424-laminar flow filter layer, 1424.1-first laminar flow filter layer, 1424.2-second laminar flow filter layer, 1425-end head seat, 1426-damping buffer groove, 1427-zhuyu block interface and 1428-cooler interface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 3, the hydraulic system of the coal mining machine using the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine of the present invention includes a hydraulic oil tank 10, a liquid level meter 11, an oil suction filter 12, an air cleaner 13, an integrated cooling, filtering and defoaming device 14, an oil collection valve block 15, a multi-way valve oil return line 16, a brake oil return line 17, and a motor-driven oil filling motor pump oil return line 18.

Compared with the conventional hydraulic system of the coal mining machine in the prior art, the integrated cooling, filtering and defoaming device 14 is arranged in the hydraulic system of the coal mining machine using the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine, the oil collecting valve block 15 is arranged in an oil supply pipeline of the hydraulic system, and the oil return pipelines of oil path execution components of the hydraulic system, such as a multi-way valve oil return pipeline 16, a brake oil return pipeline 17, a motor-driven oil filling motor pump oil return pipeline 18 and the like, are collected into a total oil return pipeline by the oil collecting valve block 15 and then are connected to the integrated cooling, filtering and defoaming device 14.

As shown in fig. 4a and 4b, fig. 5a and 5b, and fig. 6a and 6b, the built-in integrated cooling, filtering and defoaming device 14 of the hydraulic system of the coal mining machine according to the present invention is an integrated combined structure built in the hydraulic oil tank 10, and integrates cooling, filtering and defoaming functions, including: the combined cooling system comprises a spiral finned tube cooler 141, an integrated shell 142, a centralized cooling part 143, a laminar flow filtering part 144, a vibration damping buffer belt 145, a hydraulic system total oil return port 146 and a spot block 147. Throughout this application, the zebra block refers to an articulated rotatable pipe joint for plumbing connections in a hydraulic system.

The finned tube cooler 141 includes a cooling head 1411, a support 1412, a finned tube 1413, and cooling water inlets 1414 and cooling water outlets 1415 provided on the cooling head 1411, through which cooling water is introduced to cool the oil in the hydraulic oil tank 10 via the cooling water inlets 1414 and the cooling water outlets 1415.

The spiral finned tube cooler 141 is installed in a spiral finned tube intrusion manner, the spiral finned tube intrudes into oil in the oil tank, and cooling water flows in the spiral finned tube to take away heat of the oil to be cooled. The heat dissipation efficiency of the spiral finned tube is 1.5 times of that of the traditional copper tube and stainless steel tube light tube, and the pressure resistance is more than 10 MPa.

The integrated housing 142 includes a flange 1421, a housing 1422, a defoaming layer 1423, a laminar flow filtering layer 1424, a head rest 1425, a vibration damping buffer groove 1426, a patch interface 1427, and a cooler interface 1428, wherein the patch interface 1427 and the cooler interface 1428 are disposed on the flange 1421 of the integrated housing 142.

The outer case 1422 of the integrated housing 142 includes a large diameter portion 1422.1 on the flange 1421 side and a small diameter portion 1422.2 on the side away from the flange 1421, the defoaming layer 1423 includes a first defoaming layer 1423.1 and a second defoaming layer 1423.2, the laminar flow filter layer 1424 includes a first laminar flow filter layer 1424.1 and a second laminar flow filter layer 1424.2, the first defoaming layer 1423.1 is provided on the inner periphery of the large diameter portion 1422.1, the second defoaming layer 1423.2 is provided on the inner periphery of the small diameter portion 1422.2, the first laminar flow filter layer 1424.1 is provided in the inner cavity of the laminar flow of the large diameter portion 1422.1, and the second defoaming layer 1424.2 is provided in the inner cavity of the small diameter portion 1422.2. The first laminar flow filtering layer 1424.1 and the second laminar flow filtering layer 1424.2 form the laminar flow filtering portion 144 of the integrated cooling, filtering and defoaming device 14.

The turn-fin tube cooler 141 is mounted within the integrated housing 142 by a cooler interface 1428. The oil collecting valve block 15 of the hydraulic system of the coal mining machine is communicated with a total oil return port 146 of the hydraulic system, the total oil return port 146 of the hydraulic system is connected to a port 1427 of a patch jack block 147 through the patch jack block 147, and return oil of each oil path execution component of the hydraulic system is collected and then enters a large-diameter part 1422.1 of the integrated shell 142 of the integrated cooling, filtering and defoaming device 14. The space of the large diameter section 1422.1 other than the space occupied by the spiral fin tube cooler 141 and the first layer flow filter layer 1424.1 forms the above-described concentrated cooling section 143 of the integrated cooling, filtering and defoaming apparatus 14, whereby the oil returning of the hydraulic system can be cooled promptly, concentratedly and efficiently by the concentrated cooling section 143 at the first time.

The tip seat 1425 is installed at the end of the small diameter portion 1422.2 of the outer case 1422 of the integrated housing 142, the tip seat 1425 is opened in the circumferential direction with a vibration damping and cushioning groove 1426, and the vibration damping and cushioning tape 145 is installed in the vibration damping and cushioning groove 1426.

The working process of the built-in integrated cooling, filtering and defoaming device of the coal mining machine hydraulic system provided by the invention is as follows: in the hydraulic system of the coal mining machine using the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine, all return oil of the hydraulic system firstly enters the oil collecting valve block 15 in a centralized manner, then enters the integrated shell 142 of the integrated cooling, filtering and defoaming device 14 through the total oil return port 146 of the hydraulic system on the integrated cooling, filtering and defoaming device 14 built in the hydraulic oil tank 10 in a centralized manner, the oil return pressure is buffered and cleared by the integrated shell 142, the oil return is cooled in the centralized cooling part 143 in a centralized manner by the spiral finned tube cooler 141 in the first time, and the cooled return oil flows back to the hydraulic oil tank 10 through the defoaming, precipitating and filtering functions of the defoaming layer 1423 and the laminar filtering layer 1424 arranged in the integrated shell 142.

In summary, compared with the prior art, the built-in integrated cooling, filtering and defoaming device of the hydraulic system of the coal mining machine has the following advantages and beneficial effects:

1) the integrated system integrates multiple effects of cooling, oil return pressure buffering, defoaming, precipitating and filtering by adopting a built-in integrated design, does not need to be separately configured with each monomer functional component, has short span of a connecting pipeline, avoids the problem that specific functions cannot be realized due to objective external space limitation, has high integration, compact structure, low cost, convenient maintenance, powerful functions and high system stability, and saves space to the utmost extent; meanwhile, the built-in integrated design improves the adaptability of the device in high-temperature, humid, vibrating and dusty environments.

2) Compared with the traditional light pipe pipelines of copper pipes and stainless steel pipes, the spiral finned tube cooler has the advantages that the heat dissipation area is greatly increased under the condition of the same length and diameter, the heat dissipation efficiency is 1.5 times that of the traditional light pipe pipelines of copper pipes and stainless steel pipes, and the pressure resistance can reach 10MPa, so that the cooler can be made smaller and more exquisite.

3) The arrangement of the integrated shell can protect the spiral finned tube cooler from being damaged by collision of external objects, and meanwhile, return oil of a hydraulic system can be timely, intensively and efficiently cooled in the centralized cooling part at the first time; moreover, as the oil return of the hydraulic system has certain oil return pressure, the oil tank is directly drained to cause impact disturbance to the oil in the hydraulic oil tank, and the setting of the integrated shell can also effectively buffer and clear up the oil return pressure.

4) By utilizing the device, the cooled return oil flows back into the hydraulic oil tank after defoaming, precipitating and filtering actions of the defoaming layer and the laminar flow filtering layer arranged in the integrated shell, so that impurities in the total return oil of the hydraulic system are filtered, and foam and impurities generated by a large amount of return oil of the hydraulic system are avoided, thereby avoiding emptying and blocking of a gear pump caused by the fact that the oil absorption filter sucks foam air and impurities, ensuring the quality of oil products flowing back into the hydraulic oil tank and ensuring the good operation of the hydraulic system.

5) The vibration reduction buffer belt is installed on the end socket of the integrated shell, so that the influence of external equipment vibration and oil fluctuation in the hydraulic oil tank on the built-in integrated cooling, filtering and defoaming device can be effectively reduced.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.