Mine dredging sprayer

Abstract

A mine dredging sprayer is composed of a sprayer seat, a sealing cover, a shell, a connecting base, linear nozzles and a center shaft, the multiple linear nozzles are installed on the sprayer seat, an inner cavity of the sprayer seat is communicated with an inner cavity of the center shaft, an inner cavity of the connecting base is communicated with an inner cavity of the center shaft, the front portion of the shell is connected with the sprayer seat through the sealing cover, and the rear portion of the shell is fixedly connected with the connecting base. An oil seal B and an angular contact bearing are arranged between the spray head seat and the sealing cover, a torsion spring, a speed reduction valve and a deep groove ball bearing are arranged between the shell and the center shaft from front to back, an anti-abrasion ring is arranged on the outer surface of the speed reduction valve, the deep groove ball bearing is fixed through a bearing check ring, and a clamping spring for a hole and an oil seal A are arranged between the connecting base and the center shaft. The torsion spring and the speed reduction valve rotate passively to play a role in speed control, the angular contact bearing and the deep groove ball bearing can effectively eliminate axial and radial stress of movement of the spray head, and the spray head has the advantages of reasonable design, convenience in use, high sealing performance and stability in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cleaning components for mines, in particular to a mine dredging nozzle. Background Art

[0002] Normal drainage in the mine is an important part of ensuring safe production in coal mines. The impurities in mine water are mainly suspended solids composed of coal rock powder and some insoluble salts. Therefore, after a certain period of time, the drainage pipe will be scaled, which will reduce the pipe diameter, increase the drainage resistance of the pipe, greatly reduce the drainage efficiency, and directly affect the production safety of coal mines. At the same time, it also greatly increases the power consumption of drainage. At present, the methods commonly adopted by mining enterprises include replacement of drainage pipes and chemical cleaning and descaling. The replacement of drainage pipes refers to the removal of the original drainage pipes and the laying of new pipes, which takes up the safe production time of coal mine enterprises and indirectly causes huge economic losses. The chemical agents used in the chemical cleaning and descaling method are corrosive to a certain extent and are easy to cause corrosion to the inner wall of the pipe. The descaling cycle is long, which affects the normal drainage of the underground drainage pipes in coal mines. Because the waste liquid discharged by chemical cleaning is easy to cause secondary pollution, the time cost and economic cost of treating the waste liquid are increased in the later stage.

[0003] Hydraulic cleaning and descaling is an environmentally friendly and efficient method for cleaning scale in mine pipes. The nozzle is the core component of the hydraulic cleaning equipment. At present, most of the nozzles used in domestic mines adopt O-ring seals or packing seal structures. Due to the poor lubricity and low viscosity of water, as the use pressure continues to increase and the rotation speed continues to increase, the friction of the rotating sealing surface will increase sharply, the sealing loss will increase significantly, and the effective service life will be shortened. In addition, the existing mine hydraulic nozzles cannot adjust the rotation speed of the nozzles, which affects the use effect of the nozzles. Utility Model Content

[0004] The utility model provides a mine dredging nozzle to solve the problems of poor sealing, unadjustable rotation speed and poor structural stability in the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A mine unclogging nozzle consists of a nozzle seat, a cover, a shell, a connecting base, a linear nozzle and a central axis. A plurality of linear nozzles are installed on the nozzle seat. The inner cavity of the nozzle seat is communicated with the inner cavity of the central axis, the inner cavity of the connecting base is communicated with the inner cavity of the central axis, the front of the shell is connected to the nozzle seat through the cover, and the rear of the shell is connected and fixed to the connecting base. An oil seal B and an angular contact bearing are arranged between the nozzle seat and the cover, a torsion spring, a deceleration flap and a deep groove ball bearing are arranged between the shell and the central axis from front to back, an anti-wear ring is arranged on the outer surface of the deceleration flap, the deep groove ball bearing is fixed by a bearing retaining ring, and a hole retaining ring and an oil seal A are arranged between the connecting base and the central axis.

[0007] A sealing ring is arranged at the connection between the nozzle seat and the central axis.

[0008] A water seal and a grinding ring are arranged at the connection between the inner cavity of the connection base and the inner cavity of the central shaft.

[0009] An oil plug is arranged on the connection base, and the oil plug is communicated with the oil seal A and the oil seal B through the oil passage.

[0010] When the utility model mine dredging nozzle is used, the discharge end is connected to the connection base, and the high-pressure cleaning medium passes through the water seal, the grinding ring, the central axis and the nozzle seat and is finally sprayed out through the linear nozzle. The side deviation angle of the linear nozzle enables the nozzle seat to rotate 360 ​​degrees in a circle, thereby cleaning the mine pipeline without dead angles.

[0011] The rotation of the central axis drives the torsion spring and the deceleration petal to rotate passively, and the flow of the internal damping medium can achieve a good speed control effect.

[0012] Angular contact bearings and deep groove ball bearings can effectively eliminate the axial and radial stress of the nozzle movement, ensuring the stability of the nozzle during use.

[0013] The utility model has a split disassembly structure. The passive rotation of the torsion spring and the deceleration petal can play a speed control role. The angular contact bearing and the deep groove ball bearing can effectively eliminate the axial and radial stress of the nozzle movement. It has a reasonable design, is easy to use, and has the advantages of strong sealing performance and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

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

[0016] In the figure, 1 nozzle seat, 2 sealing cover, 3 angular contact bearing, 4 torsion spring, 5 anti-wear ring, 6 housing, 7 deep groove ball bearing, 8 oil plug, 9 connecting base, 10 water seal, 11 grinding ring, 12 oil seal A, 13 hole retaining ring, 14 bearing retaining ring, 15 speed reduction flap, 16 oil seal B, 17 linear nozzle, 18 center shaft, 19 sealing ring. DETAILED DESCRIPTION

[0017] As shown in the figure, a mine dredging nozzle is composed of a nozzle seat 1, a cover 2, a shell 6, a connecting base 9, a linear nozzle 17 and a central shaft 18. A plurality of linear nozzles 17 are installed on the nozzle seat 1. The inner cavity of the nozzle seat 1 is communicated with the inner cavity of the central shaft 18. A sealing ring 19 is arranged at the connection between the nozzle seat and the central shaft. The inner cavity of the connecting base 9 is communicated with the inner cavity of the central shaft 18. A water seal 10 and a grinding ring 11 are arranged at the connection between the inner cavity of the connecting base 9 and the inner cavity of the central shaft 18. The front part of the shell 6 is connected to the nozzle seat 1 through the cover 2, and the rear part of the shell is connected and fixed to the connecting base. An oil seal B16 and an angular contact bearing 3 are arranged between the nozzle seat and the cover. A torsion spring 4, a deceleration flap 15 and a deep groove ball bearing 7 are arranged between the shell and the central shaft from front to back. An anti-wear ring 5 is arranged on the outer surface of the deceleration flap 15. The deep groove ball bearing 7 is fixed by a bearing retaining ring 14. A hole retaining ring 13 and an oil seal A12 are arranged between the connecting base 9 and the central shaft 18. An oil plug 8 is provided on the connecting base 9, and the oil plug is connected to the oil seal A and the oil seal B through the oil passage.

[0018] When the utility model mine dredging nozzle is used, the discharge end is connected to the connection base, and the high-pressure cleaning medium passes through the water seal, the grinding ring, the central axis and the nozzle seat and is finally sprayed out through the linear nozzle. The side deviation angle of the linear nozzle enables the nozzle seat to rotate 360 ​​degrees in a circle, thereby cleaning the mine pipeline without dead angles.

[0019] The rotation of the central axis drives the torsion spring and the deceleration petal to rotate passively, and the flow of the internal damping medium can achieve a good speed control effect.

[0020] Angular contact bearings and deep groove ball bearings can effectively eliminate the axial and radial stress of the nozzle movement, ensuring the stability of the nozzle during use.

Claims

1. Mine dredging nozzle, its characteristics are It consists of a nozzle seat, a cover, a shell, a connecting base, a linear nozzle and a central axis. A number of linear nozzles are installed on the nozzle seat. The inner cavity of the nozzle seat is communicated with the inner cavity of the central axis, and the inner cavity of the connecting base is communicated with the inner cavity of the central axis. The front part of the shell is connected to the nozzle seat through the cover, and the rear part of the shell is connected and fixed to the connecting base. An oil seal B and an angular contact bearing are arranged between the nozzle seat and the cover. A torsion spring, a deceleration flap and a deep groove ball bearing are arranged between the shell and the central axis from front to back. An anti-wear ring is arranged on the outer surface of the deceleration flap, and the deep groove ball bearing is fixed by a bearing retaining ring. A hole retaining ring and an oil seal A are arranged between the connecting base and the central axis.

2. The mine dredging nozzle according to claim 1 is characterized in that A sealing ring is arranged at the connection between the nozzle seat and the central axis.

3. The mine dredging nozzle according to claim 1 is characterized in that A water seal and a grinding ring are arranged at the connection between the inner cavity of the base and the inner cavity of the central shaft.

4. The mine dredging nozzle according to claim 1 is characterized in that An oil plug is arranged on the connection base, and the oil plug is communicated with the oil seal A and the oil seal B through the oil passage.

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