Oil-water separation type drilling box

Abstract

The utility model discloses an oil-water separation type drill box which comprises a drill box shell, a water jacket shell, a motor and a main shaft, a motor is fixed to one end of the drill box shell, a water jacket shell is fixed to the other end of the drill box shell, a main shaft is rotationally connected to the interior of the drill box shell through a bearing, one end of the main shaft is fixedly connected with an output shaft of the motor, and the other end of the main shaft penetrates through the water jacket shell and extends to the outside. The water cavity is connected with the spindle through a mechanical sealing piece, a first water channel is formed in the spindle, and the inlet end of the first water channel communicates with the water cavity. The water jacket shell is provided with a second water channel communicated with the water cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of drill boxes, in particular to an oil-water separation type drill box. Background Art

[0002] In coal mine tunnel support operations, the use of the drill box of the anchor drill is crucial. As a connecting device between the motor and the drill rod, the drill box can efficiently transmit the torque and speed generated by the motor to the drill rod, and can drive the drill rod and anchor rod to achieve support operations. Moreover, the drill bit can be effectively cooled by passing water through the middle route, thereby extending the service life of the drill tool and improving the drilling efficiency. The water flow can promptly remove the rock cuttings generated during the drilling process to prevent the accumulation of rock cuttings in the borehole and causing blockage.

[0003] In actual use, the drill box of the anchor miner often leaks. The reason is that the current drill box water supply channel and the bearing are in the same cavity. The internal water seal will fail due to wear after a period of use. This will cause water to enter the bearing inside the drill box, making the grease thinner and the bearing unable to be fully lubricated. The wear during rotation is aggravated, causing bearing damage. In addition, if the water pressure is high, it may also enter the hydraulic system from the motor of the drill box, causing the hydraulic oil to emulsify. Utility Model Content

[0004] The utility model aims to provide an oil-water separation type drilling box.

[0005] The utility model is implemented by the following technical scheme: an oil-water separation type drill box, which includes a drill box shell, a water jacket shell, a motor, and a main shaft;

[0006] The motor is fixed to one end of the drill box housing, the water jacket housing is fixed to the other end of the drill box housing, the spindle is rotatably connected to the inside of the drill box housing via a bearing, one end of the spindle is fixedly connected to the output shaft of the motor, the other end of the spindle passes through the water jacket housing and extends to the outside, a water cavity is formed on the inner wall of the water jacket housing, the water cavity is connected to the spindle via a mechanical seal, a first water channel is formed inside the spindle, and an inlet end of the first water channel is communicated with the water cavity;

[0007] The water jacket shell is provided with a second water channel communicating with the water cavity.

[0008] Furthermore, a liquid distribution block is fixed to one side of the drill box shell, a third water channel is opened on the drill box shell, the outlet end of the third water channel is connected to the second water channel, and the inlet end of the third water channel is connected to the water outlet of the liquid distribution block.

[0009] Furthermore, a skeleton seal is clamped between one end of the drill box housing close to the water jacket housing and the main shaft.

[0010] Furthermore, a drain port is provided at one end of the drill box housing close to the water jacket housing, a water outlet channel is provided between the skeleton seal and the water jacket housing, and the water outlet channel is communicated with the drain port.

[0011] Furthermore, the water jacket housing includes a first housing and a second housing, the first housing and the second housing are fixedly connected, and the first housing is fixedly connected to the drill box housing through the second housing.

[0012] The utility model has the advantages that the water jacket shell and the drill box shell are separately arranged, and the water supply channel is moved toward the drill rod and away from the bearing in the drill box. The original water supply channel and the bearing in the drill box are in a cavity, which are changed into independent spaces for the two, thus eliminating the possibility of the lubricating oil, hydraulic oil and water mixing.

[0013] The cooperation of mechanical seal and skeleton seal further blocks the water in the water cavity. Even if the mechanical seal in the water jacket shell fails, the water will be discharged through the drain port under the action of skeleton seal. Maintenance personnel can replace the mechanical seal in time according to the water discharge situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0017] Figure 3 for Figure 1 A partial enlarged schematic diagram of B in the middle;

[0018] In the figure: drill box housing 1, motor 2, water jacket housing 3, first housing 3.1, second housing 3.2, bearing 4, main shaft 5, water chamber 7, mechanical seal 8, first water channel 9, second water channel 10, liquid distribution block 11, third water channel 12, skeleton seal 13, drain port 14, water outlet channel 15. DETAILED DESCRIPTION

[0019] 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 of 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.

[0020] like Figure 1-3 As shown, the oil-water separation drill box includes a drill box housing 1, a water jacket housing 3, a motor 2, and a main shaft 5;

[0021] A motor 2 is fixed to one end of the drill box housing 1, and a water jacket housing 3 is fixed to the other end of the drill box housing 1. The purpose of the separate setting between the water jacket housing 3 and the drill box housing 1 is to facilitate the replacement of the mechanical seal 8 inside the water jacket housing 3. The inside of the drill box housing 1 is rotatably connected to a main shaft 5 through a bearing 4. One end of the main shaft 5 is fixedly connected to the output shaft of the motor 2, and the other end of the main shaft 5 passes through the water jacket housing 3 and extends to the outside. The end of the main shaft 5 is connected to the drill rod.

[0022] A water cavity 7 is provided on the inner wall of the water jacket shell 3, and the water cavity 7 is connected to the main shaft 5 through a mechanical seal 8. The mechanical seal 8 mainly includes the following four types of components: a. Main seals: dynamic ring and static ring. b. Auxiliary seals: sealing ring. c. Compressing parts: spring, push ring. d. Transmission parts: spring seat and key or fixing screw. The water jacket shell 3 and the main shaft 5 can be sealed and connected by the mechanical seal 8, so that the water cavity 7 is a closed space. A first water channel 9 is provided inside the main shaft 5. The first water channel 9 and the middle water passage of the main shaft 5 are used to cool the drill bit and reduce the head. The inlet end of the first water channel 9 is connected to the water cavity 7. A second water channel 10 connected to the water cavity 7 is provided on the water jacket shell 3. A liquid dispensing block 11 is fixed on one side of the drill box shell 1. A third water channel 12 is provided on the drill box shell 1. The outlet end of the third water channel 12 is connected to the second water channel 10, and the inlet end of the third water channel 12 is connected to the water outlet of the liquid dispensing block 11. Specifically, water enters through the inlet of the liquid distribution block 11 under the action of pressure, is sent to the water cavity 7 in the water jacket shell 3 from the outlet of the liquid distribution block 11 through the third water channel 12 and the second water channel 10, then enters the first water channel 9 of the main shaft 5 through the gap of the mechanical seal, and then is sent to the drill pipe through the first water channel 9.

[0023] A skeleton seal 13 is clamped between one end of the drill box housing 1 close to the water jacket housing 3 and the main shaft 5. The skeleton seal 13 is used in conjunction with the mechanical seal 8. When the mechanical seal 8 in the water jacket housing 3 fails or is damaged, the water in the water jacket housing 3 and the lubricating oil of the bearing 4 in the drill box housing 1 can be separated by the skeleton seal 13, thereby reducing the mixing of water and lubricating oil and ensuring the lubrication effect of the bearing 4.

[0024] A drain port 14 is provided at one end of the drill box housing 1 close to the water jacket housing 3, and a water outlet channel 15 is provided between the skeleton seal 13 and the water jacket housing 3. The water outlet channel 15 is communicated with the drain port 14. When the mechanical seal 8 is damaged, water can be discharged from the drain port 14 through the drain port 14 and the water outlet channel 15. When water flows out of the surface of the drill box housing 1, the maintenance personnel can replace the mechanical seal 8.

[0025] The water jacket housing 3 includes a first housing 3.1 and a second housing 3.2, which are fixedly connected to each other. The first housing 3.1 is fixedly connected to the drill box housing 1 through the second housing 3.2. The purpose of the separate arrangement between the first housing 3.1 and the second housing 3.2 is to facilitate assembly and disassembly, and to facilitate replacement when the mechanical seal 8 is damaged.

[0026] The water jacket shell 3 and the drill box shell 1 are separated, and the water supply is moved toward the drill rod, so that the water supply channel is away from the bearing 4 in the drill box. The original water supply channel and the bearing 4 in the drill box are changed into independent spaces for each other, which prevents the possibility of lubricating oil, hydraulic oil and water from mixing. At the same time, the cooperation of the mechanical seal 8 and the skeleton seal 13 further blocks the water in the water cavity 7. When the mechanical seal in the water jacket shell 3 fails, the water is discharged through the drain port 14 under the action of the skeleton seal 13, and the maintenance personnel can replace the mechanical seal 8 in time according to the water discharge situation.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Oil-water separation drilling box, characterized in that: It includes a drill box housing, a water jacket housing, a motor and a main shaft; The motor is fixed to one end of the drill box housing, the water jacket housing is fixed to the other end of the drill box housing, the spindle is rotatably connected to the inside of the drill box housing via a bearing, one end of the spindle is fixedly connected to the output shaft of the motor, the other end of the spindle passes through the water jacket housing and extends to the outside, a water cavity is formed on the inner wall of the water jacket housing, the water cavity is connected to the spindle via a mechanical seal, a first water channel is formed inside the spindle, and an inlet end of the first water channel is communicated with the water cavity; The water jacket shell is provided with a second water channel communicating with the water cavity.

2. The oil-water separation drilling box according to claim 1, characterized in that: A liquid distribution block is fixed on one side of the drill box shell. A third water channel is opened on the drill box shell. The outlet end of the third water channel is connected to the second water channel, and the inlet end of the third water channel is connected to the water outlet of the liquid distribution block.

3. The oil-water separation drilling box according to claim 2, characterized in that: A skeleton seal is clamped between one end of the drill box shell close to the water jacket shell and the main shaft.

4. The oil-water separation drilling box according to claim 3, characterized in that: A drain port is provided at one end of the drill box shell close to the water jacket shell, a water outlet channel is provided between the skeleton seal and the water jacket shell, and the water outlet channel is communicated with the drain port.

5. The oil-water separation drilling box according to claim 4, characterized in that: The water jacket housing comprises a first housing and a second housing. The first housing and the second housing are fixedly connected to each other, and the first housing is fixedly connected to the drill box housing through the second housing.

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