An external internal spray system for coal mining machine

Abstract

An external internal spray system for a coal mining machine includes a bearing cover, an output shaft, a gland, a transmission cover, a rotary joint, a water pipe seat, a water pipe, a water block, a hinged body, and a hose; the bearing cover is arranged at one end of the output shaft; the output shaft is meshed with the roller, a bearing cup is arranged in the left assembly groove of the output shaft, and a bearing and an oil seal are arranged in the bearing cup; the gland is arranged at the other end of the output shaft and is fixedly connected to the output shaft; the transmission cover is fixed on the gland; the rotary joint is fixed on the transmission cover, one end of which is sealed and connected to the water pipe seat arranged between the gland and the transmission cover, and the other end is connected to the hinged body; the water pipe is installed on the output shaft, one end of which is sealed and connected to the water pipe seat, and the other end is sealed and connected to the bearing cover; the water block is arranged on the outside of the bearing cover and is sealed and connected to the bearing cover; the hinged body is connected to the roller nozzle through a hose. The spray system not only ensures the spray effect of the coal mining machine, but also completely solves the industry problem of "oil-water mixing", and improves the service life of the internal spray.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining machinery and relates to a coal mining machine spray system, in particular to an external internal spray system for a coal mining machine. Background Art

[0002] The spray system inside the coal mining machine is an important part of the spray system of the coal mining machine. Its main functions include dust reduction, wetting, cooling the cutting teeth, extinguishing the sparks that may be generated during drum cutting, and diluting the concentration of harmful gases.

[0003] The existing internal spray structure of mining machinery (such as the internal spray system of coal mining machine disclosed in CN 217028892 U) is prone to side leakage, which leads to oil-water mixing and other phenomena, resulting in problems such as short service life of mining machinery and affecting customer efficiency. Utility Model Content

[0004] In order to solve the problems of side leakage and short service life of the internal spray of mining machinery, the utility model provides an external internal spray system for coal mining machine. The spray system changes the conventional internal spray system design and is designed as an internal spray sealing structure. It is placed on the drum side and rotates synchronously with the drum, which not only ensures the spray effect of the coal mining machine, but also completely solves the industry problem of "oil-water mixing" and improves the service life of the internal spray.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An external internal spray system for a coal mining machine comprises a bearing cover, an output shaft, a gland, a transmission cover, a rotary joint, a water pipe seat, a water pipe, a water block, a hinged body and a hose;

[0007] Wherein, the bearing cover is arranged at one end of the output shaft, and the bearing cover is fixed on the rocker arm housing;

[0008] The output shaft is meshed with the drum, and a left assembly groove and a right assembly groove are provided at both ends of the output shaft. A bearing cup is provided in the left assembly groove, and a bearing and an oil seal are provided in the bearing cup.

[0009] The gland is arranged at the other end of the output shaft and is fixedly connected to the output shaft, and is used to compress the bearing cup in the left assembly groove;

[0010] The transmission cover is fixed on the pressure cover;

[0011] The rotary joint is fixed on the transmission cover, one end of the rotary joint passes through the transmission cover and is sealedly connected to a water pipe seat arranged between the pressure cover and the transmission cover, the other end of the rotary joint is arranged outside the transmission cover and connected to the hinged body, and the interior of the rotary joint is communicated with the water pipe and the interior of the hinged body;

[0012] The water pipe is installed on the output shaft, fixed to the inner ring of the bearing in the bearing cup, and is sealed with the oil seal. One end of the water pipe is pressed against the water pipe seat and is sealed with the water pipe seat, and the other end is installed in the bearing cover and is sealed with the bearing cover, and is communicated with the interior of the rotary joint.

[0013] The water-passing block is arranged on the outer side of the bearing cover, is sealed and connected with the bearing cover, and is communicated with the water-passing pipe;

[0014] The hinged body is connected with the roller nozzle through a rubber hose.

[0015] As a preferred embodiment of the utility model, an assembly part is provided at the center of the bearing cover, and the assembly part is arranged in the right assembly groove of the output shaft. A through hole is provided at the axis of the assembly part, and a mounting groove is provided along the circumference of the through hole at one end close to the water block. The water block is fixed in the mounting groove of the bearing cover by welding, and is sealed by a sealing ring; the water pipe is inserted into the through hole of the assembly part, and is sealed by a sealing ring. The end of the water pipe extends into the mounting groove, and is fixed between the bearing cover and the water pipe seat by a locking washer and a locking nut.

[0016] As a preferred embodiment of the utility model, a spacer sleeve is further provided in the left assembly groove, the spacer sleeve is arranged on the inner side of the bearing cup, a sealing ring is provided between the bearing cup and the output shaft, and sealing is achieved by the sealing ring, and the oil seal is a floating oil seal.

[0017] As a preferred embodiment of the utility model, a sealing ring is provided between the rotary joint and the water pipe seat, a sealing ring is provided at the joint between the water pipe and the rotary joint, and a sealing ring is provided at the connection between the water pipe and the water pipe seat, and sealing is achieved by the sealing ring.

[0018] As a preferred embodiment of the utility model, the rotary joint is connected to the hinged body by an articulated bolt, an O-ring and a retaining ring are provided at the connection between the hose and the hinged body, the hose is fixed to the hinged body by a U-shaped clip, and the hose is connected to the interior of the hinged body.

[0019] The utility model has the following advantages and positive effects:

[0020] (1) The external internal spray system provided by the utility model changes the conventional internal spray system structure and is designed as an internal spray sealing structure. It is placed on the drum side, connects the water pipe and the rotary joint from the output shaft, and is connected to the drum nozzle through a hose to ensure the spray effect of the coal mining machine.

[0021] (2) The new internal spray structure provided by the utility model completely solves the industry problem of "oil-water mixing" and can increase the service life of the internal spray (≥1 year); in addition, the new internal spray structure saves the structural space of the coal mining machine, thereby shortening the machine body and the machine surface, increasing traction, and further reducing the lower limit of the mining height, which is of great significance to the mining of thin coal seams and marks a new milestone in the mechanization of thin coal seams.

[0022] (3) The external internal spray system provided by the utility model solves the problems of easy side leakage in mining machinery and short service life of the spray. The spray system can be used to realize mechanized and intelligent mining of extremely thin coal seams. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the external internal spray system of the utility model coal mining machine;

[0024] Figure 2 yes Figure 1 Partial magnification Figure 1 ;

[0025] Figure 3 yes Figure 1 Partial magnification Figure 2 ;

[0026] Figure numerals: bearing cover 1, output shaft 2, pressure cover 3, transmission cover 4, rotary joint 5, water pipe seat 6, water pipe 7, water block 8, hinged body 9, hose 10, bearing cup 11, bearing 12, oil seal 13, welding plug 14, sealing ring 15, locking nut 16, spacer 17, hinge bolt 18, U-shaped card 19, assembly part 101, installation groove 102, right assembly groove 201. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In the description of the present application, it should be noted that the terms "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the application is usually placed when in use. These directions or positions are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0029] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] like Figures 1 to 3 As shown, the utility model provides an external internal spray system for a coal mining machine, comprising a bearing cover 1, an output shaft 2, a pressure cover 3, a transmission cover 4, a rotary joint 5, a water pipe seat 6, a water pipe 7, a water block 8, a hinged body 9, and a hose 10;

[0031] The bearing cover 1 is arranged at one end of the output shaft 2, and the bearing cover 1 is fixed on the rocker arm housing (not shown);

[0032] The output shaft 2 is meshed with the drum (not shown) and rotates synchronously with the drum. The two ends of the output shaft 2 are provided with a left assembly groove (not marked) and a right assembly groove 201. The left assembly groove is provided with a bearing cup 11. The bearing cup 11 is provided with a bearing 12 and an oil seal 13.

[0033] The gland 3 is arranged at the other end of the output shaft 2 and is fixedly connected to the output shaft 2 (the two are connected by bolts in this embodiment) and is used to compress the bearing cup 11 in the left assembly groove;

[0034] The transmission cover 4 is fixed on the pressure cover 3 (in this embodiment, the two are connected by bolts);

[0035] The rotary joint 5 is fixed on the transmission cover 4, one end of the rotary joint 5 passes through the transmission cover 4 and is sealedly connected to the water pipe seat 6 arranged between the pressure cover 3 and the transmission cover 4 (in this embodiment, the two are connected by bolts and sealed by a sealing ring), the other end of the rotary joint 5 is arranged outside the transmission cover 4 and connected to the hinged body 9, and the interior of the rotary joint 5 is communicated with the water pipe 7 and the interior of the hinged body 9;

[0036] The water pipe 7 is installed on the output shaft 2, fixed to the inner ring of the bearing 12 in the bearing cup, and is sealed with the oil seal 13. One end of the water pipe 7 is pressed against the water pipe seat 6 and is sealed with the water pipe seat, and the other end is installed in the bearing cover 1 and is sealed with the bearing cover, and is communicated with the interior of the rotary joint 5.

[0037] The water block 8 is arranged on the outside of the bearing cover 1, is sealed and connected to the bearing cover 1, and is communicated with the water pipe 7;

[0038] The hinged body 9 is connected to the roller nozzle via a hose 10 .

[0039] Further, if Figure 1 , Figure 2 As shown, in this embodiment, an assembly portion 101 is provided at the center of the bearing cover 1, and the assembly portion 101 is arranged in the right assembly groove 201 of the output shaft 2. A through hole (not marked) is provided at the axis of the assembly portion 101, and a mounting groove 102 is provided along the circumference of the through hole at one end close to the water passing block 8. The water passing block 8 is fixed in the mounting groove 102 of the bearing cover by a welding plug 14, and is sealed by a sealing ring 15; the water passing pipe 7 is inserted into the through hole of the assembly portion 101, and is sealed by a sealing ring 15. The end of the water passing pipe 7 extends into the mounting groove 102, and the water passing pipe 7 is fixed between the bearing cover 1 and the water pipe seat 6 by a locking washer and a locking nut 16.

[0040] Further, if Figure 1 , Figure 3 As shown, in this embodiment, a spacer sleeve 17 is further provided in the left assembly groove, and the spacer sleeve 17 is arranged on the inner side of the bearing cup 11. A sealing ring 15 is provided between the bearing cup 11 and the output shaft 2, and sealing is achieved by the sealing ring 15. The oil seal 13 is a floating oil seal.

[0041] Further, if Figure 1 , Figure 3 As shown, in this embodiment, a sealing ring 15 is provided between the rotary joint 5 and the water pipe seat 6, a sealing ring (not marked) is provided at the joint between the water pipe 7 and the rotary joint 5, and a sealing ring (not marked) is provided at the connection between the water pipe 7 and the water pipe seat 6, and sealing is achieved by the sealing ring.

[0042] Further, if Figure 1 , Figure 3 As shown, in this embodiment, the rotary joint 5 is connected to the hinged body 9 by a hinge bolt 18, and an O-ring (unmarked) and a retaining ring (unmarked) are provided at the connection between the hose 10 and the hinged body 9. The hose 10 is fixed to the hinged body 9 by a U-shaped clip 19, so that the hose 10 is connected to the interior of the hinged body 9.

[0043] Working principle: The cooling water in the cooling water channel of the rocker arm housing is used as the total water (water source). The total water flows to the rotary joint 5 through the water block 8 and the water pipe 7, and then flows to the nozzle of the coal mining machine drum through the hinged body 9 and the hose 10 to achieve spraying, thereby ensuring the spraying effect of the coal mining machine. At the same time, since the spray system is designed as an internal spray sealing structure and is placed on the drum side, it can completely solve the industry problem of "oil-water mixing" and improve the service life of the internal spray.

[0044] The above description is only a specific implementation case of the utility model, but the technical features of the utility model are not limited thereto. Any changes and modifications made by any technician in the field within the field of the utility model are within the scope of the patent of the utility model.

Claims

1. An external internal spray system for a coal mining machine, characterized in that: It includes a bearing cover, an output shaft, a gland, a transmission cover, a rotary joint, a water pipe seat, a water pipe, a water block, a hinged body, and a hose; Wherein, the bearing cover is arranged at one end of the output shaft, and the bearing cover is fixed on the rocker arm housing; The output shaft is meshed with the drum, and a left assembly groove and a right assembly groove are provided at both ends of the output shaft. A bearing cup is provided in the left assembly groove, and a bearing and an oil seal are provided in the bearing cup. The gland is arranged at the other end of the output shaft and is fixedly connected to the output shaft, and is used to compress the bearing cup in the left assembly groove; The transmission cover is fixed on the pressure cover; The rotary joint is fixed on the transmission cover, one end of the rotary joint passes through the transmission cover and is sealedly connected to a water pipe seat arranged between the pressure cover and the transmission cover, the other end of the rotary joint is arranged outside the transmission cover and connected to the hinged body, and the interior of the rotary joint is communicated with the water pipe and the interior of the hinged body; The water pipe is installed on the output shaft, fixed to the inner ring of the bearing in the bearing cup, and is sealed with the oil seal. One end of the water pipe is pressed against the water pipe seat and is sealed with the water pipe seat, and the other end is installed in the bearing cover and is sealed with the bearing cover, and is communicated with the interior of the rotary joint. The water-passing block is arranged on the outer side of the bearing cover, is sealed and connected with the bearing cover, and is communicated with the water-passing pipe; The hinged body is connected with the roller nozzle through a rubber hose.

2. The external internal spray system of a coal mining machine according to claim 1, characterized in that: An assembly part is provided at the center of the bearing cover, and the assembly part is arranged in the right assembly groove of the output shaft. A through hole is provided at the axis of the assembly part, and a mounting groove is provided along the circumference of the through hole at one end close to the water block. The water block is fixed in the mounting groove of the bearing cover by welding, and is sealed by a sealing ring; the water pipe is inserted into the through hole of the assembly part, and is sealed by a sealing ring. The end of the water pipe extends into the mounting groove, and is fixed between the bearing cover and the water pipe seat by a locking washer and a locking nut.

3. The external internal spray system of a coal mining machine according to claim 1, characterized in that: A spacer is also provided in the left assembly groove, and the spacer is arranged on the inner side of the bearing cup. A sealing ring is provided between the bearing cup and the output shaft, and sealing is achieved by the sealing ring. The oil seal is a floating oil seal.

4. The external internal spray system of a coal mining machine according to claim 1, characterized in that: A sealing ring is arranged between the rotating joint and the water pipe seat, a sealing ring is arranged at the joint between the water pipe and the rotating joint, and a sealing ring is arranged at the connection between the water pipe and the water pipe seat, and sealing is achieved through the sealing ring.

5. The external internal spray system of a coal mining machine according to claim 1, characterized in that: The rotary joint is connected to the hinged body by an articulated bolt, an O-ring and a retaining ring are arranged at the connection between the rubber hose and the hinged body, the rubber hose is fixed to the hinged body by a U-shaped clip, and the rubber hose is communicated with the interior of the hinged body.

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