RU2615546C1 - Multipoint sealing device of auxiliary high-pressure water jet for cutting mechanism used in mining equipment - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: multipoint sealing device of the auxiliary high-pressure water jet of the cutting mechanism comprises a water conducting housing and a water conveyance hose, connected in series between the cutting shaft and the cutting-providing tank of the cutting mechanism used in mining equipment. The input water intake channel is configured radially across the water conveyance housing, the water-conducting hose and the cutting shaft, and respectively communicates with the inlet water opening for the cutting-providing tank and the main flow channel of the cutting shaft. Two sides of the input water-intake channel are respectively provided with the first sealing O-shaped ring, the gear combined sealing, and the second sealing O-shaped ring. The water-conductive housing is made with the drain gutter, and the cutting-providing tank is made with the water outflow channel communicating with the drainage gutter.

EFFECT: sealing with long service life and increasing the efficiency of the auxiliary cutting with the high-pressure water jet.

3 cl, 3 dwg

Description

Technical field

The present invention relates to a multi-point sealing device of an auxiliary high-pressure water jet for a cutting mechanism used in mining equipment and applicable to a rotating high-pressure seal in a cutting mechanism used in mining equipment.

State of the art

Given the characteristics of thin coal seams, such as a small mine space with half coal fragments and high rock hardness, etc., usually small-sized, low-power mining equipment is used, but mining productivity is low. If the capacity of mining equipment is increased only to improve mining productivity without increasing the size of the cutting mechanism, then it is inevitable that the cutting element will be highly susceptible to wear and there will be a potential safety hazard. To solve this problem, a device for the extraction of high-pressure water jets was developed, but the urgent task is to solve the problems associated with rotating high-pressure seals in these devices. In existing mining equipment, only rotating low-pressure seals in the internal irrigation system can be implemented, but the performance of the rotating seals is unsatisfactory compared to the auxiliary high-pressure water jet, therefore, it adversely affects the normal operation of the parts in the sludge supply tank, and the auxiliary cutting effect is deteriorated.

Disclosure of invention

The purpose of the invention is to overcome the disadvantages of the prior art. The present invention discloses a multi-point sealing device for efficient cutting using an auxiliary high-pressure water jet in the cutting mechanism used in mining equipment.

To solve the technical problem described above, the present invention uses the following technical scheme:

a multipoint sealing device of the auxiliary high-pressure water jet of the cutting mechanism used in mining equipment, comprising a water supply body and a water supply sleeve, the water supply sleeve and the water supply body being connected in series between the cutting shaft and the cutting cutting apparatus used in the mining equipment, the water supply sleeve is attached to the cutting shaft, and the water supply housing is attached to the cutting support vessel, while the water supply sleeve and water the conductive housing can freely rotate with respect to each other; the inlet water intake channel is made radially through a water supply case, a water supply sleeve and a cutting shaft and communicates with the water inlet of the cutting support tank and the main flow channel of the cutting shaft; the two sides of the inlet water intake channel respectively comprise a first O-ring, a combined tooth seal and a second O-ring; moreover, the first O-ring and the combined tooth seal are made on the contact surface between the cutting shaft and the water supply sleeve and on the contact surface between the water supply sleeve and the water supply body on two sides of the inlet water intake channel, respectively; a drainage chute is made on a water supply housing on the side of the combined tooth seal, away from the inlet water intake channel; the second O-ring is made on the contact surface between the water supply body and the cutting support tank on two sides of the inlet water intake channel and on the side of the drainage channel away from the inlet water intake channel; and the channel of the water leak, communicating with the drainage trough, is made on the capacity of the cutting.

In the present invention, in addition, toothed combination seals are made on each side of the inlet water intake channel in an amount of at least two.

In the present invention, in addition, the drainage troughs are made in the same amount as the combined tooth seals, and are in one-to-one correspondence with the combined tooth seals.

Benefits: The multi-point sealing device provided in the present invention solves the problem of sealing the auxiliary high-pressure water jet of the cutting mechanism used in mining equipment, can effectively seal high-pressure water up to 50 MPa, provides long-term sealing and good sealing effect, and improves the performance of the auxiliary cutting high pressure water cannon.

Brief Description of the Drawings

In FIG. 1 is a cross-sectional view of the cutting mechanism used in the mining equipment of the present invention;

In FIG. 2 is a structural diagram of a multi-point sealing device according to a first embodiment of the present invention;

In FIG. 3 is a structural diagram of a multi-point sealing device according to a second embodiment of the present invention.

Designations:

1 - shaft for cutting,

2 - connecting flange,

3 - the first screw

4 - capacity for cutting,

5 - end cap

6 - the second screw,

7 - multipoint sealing device,

8 - the third screw,

9 - the fourth screw

1-1 - the main flow channel,

1-2 - water outlet

4-1 - inlet for water,

7-1 - water-conducting housing,

7-2 - input water intake channel

7-3 - the first O-ring seal,

7-4 - water-conducting sleeve,

7-5 - snap ring,

7-6 - combined gear seal,

7-7 - drainage trough,

7-8 - the second O-ring seal,

7-9 - channel leakage of water,

7-10 - a cap of an opening with a hexagonal head.

The implementation of the invention

Here, the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the cutting mechanism used in mining equipment mainly comprises a cutting shaft 1 and a cutting support vessel 4, in which the right end of the cutting support vessel 4 is connected to the adapter using the fourth screws 9, the output side of the adapter interacts with the right end of the shaft 1 for cutting by means of a slotted key to rotate the cutting shaft 1, the left end of the cutting vessel 4 is mounted with a connecting flange 2 that can rotate freely, the connecting flange 2 is connected to the tail end cutting heads with the first screws 3, the left end of the cutting shaft 1 interacts with the middle part of the cutting head by means of a slotted key to rotate the cutting head, the middle part of the cutting shaft 1 is installed with end cap 5, and end cap 5 is attached to the tank 4 for providing cutting using the second screws 6. The inlet 4-1 for water and the main flow channel 1-1 are located on the tank 4 for collecting sludge and the shaft 1 for cutting, respectively.

Embodiment 1

As shown in FIG. 1 and FIG. 2, a multi-point sealing device 7 according to the present invention is disposed between the cutting support vessel 4 and the cutting shaft 1. The multi-point sealing device 7 comprises a water supply body 7-1 and a water supply sleeve 7-4 connected in series between the cutting shaft 1 and the cutting capacity 4 of the cutting mechanism used in mining equipment. The left end of the water supply housing 7-1 abuts against the end cap 5, and the right end of the part of the water supply housing 7-1 is attached to the cutting capacity 4 using third screws 8; the right end of the water supply sleeve 7-4 is fixed axially to the cutting shaft 1 by means of a retaining ring 7-5; the water supply sleeve 7-4 and the water supply body 7-1 can freely rotate with respect to each other.

The inlet water intake channel 7-2 is made radially through the water supply housing 7-1, the water supply sleeve 7-4 and the cutting shaft 1, and the upper end and lower end of the inlet water intake channel 7-2 communicate with the water inlet 4-1 of the supply tank 4 cutting and the main flow channel 1-1 of the shaft 1 for cutting, respectively. The first O-shaped sealing ring 7-3 is made on the contact surface between the cutting shaft 1 and the water supply sleeve 7-4 on two sides of the inlet water intake channel 7-2, respectively, four combined tooth seals 7-6 are made on the contact surface between the water supply sleeve 7-4 and a water supply housing 7-1 on two sides of the inlet water intake channel 7-2, respectively, the drainage groove 7-7 is made radially through the water supply housing 7-1 on the side of each gear combination seal 7-6 away from the inlet water intake channel 7-2, the second O-ring O-shaped 7-8 is made on the contact surface between the water supply housing 7-1 and the cutting support vessel 4 on both sides of the inlet water intake channel 7-2 and on the side of each drainage channel 7-7 away from the inlet water intake channel 7-2, and four channels 7-9 of water leakage, communicating with the drainage groove 7-7, are made in the radial direction through the cutting capacity 4.

When the cutting mechanism used in mining equipment is operating, a static seal is held between the water supply housing 7-1 and the cutting support tank 4 and between the water supply sleeve 7-4 and the cutting shaft 1, and a rotating seal is held between the water supply housing 7-1 and the water supply sleeve 7-4. High pressure water passes through the water inlet 4-1, the water inlet channel 7-2, the main flow channel 1-1 and the water outlet 1-2 in series and then there is a jet from the nozzle on the cutting head, so that high-pressure water jet promotes mining. As the cutting shaft 1 rotates, the serrated combination seals 7-6 will gradually wear out; in addition, usually a combined tooth seal 7-6, located next to the inlet water intake channel 7-2, fails first. When the first serrated combination seal 7-6 fails, leakage water will flow out of the cutting support vessel 4 through a drain groove 7-7 and a water leakage channel 7-9.

When a water leak is detected, the channel 7-9 of the water leak through which the water flows must first be sealed with a hex plug 7-10; then, the sealing ring in the second gear combination seal 7-6 will deform more severely under high pressure water pressure on one side, forcing the gear sliding ring to firmly grip the cutting shaft 1 and thereby bring the rotary seal in good condition. When the second gear combination seal 7-6 fails, the second water leakage channel 7-9 must be sealed with a hex hole plug 7-10, and so on, until the fourth gear combination seal 7-6 fails; after that, the entire multipoint sealing device 7 will be faulty and must be disassembled and checked, and the corresponding seals must be replaced.

In a multi-point sealing device 7 according to an embodiment of the invention 1, the service life of each gear combination seal 7-6 can be checked in order to provide a design basis for determining the number of further toothed combination seals 7-6 in the multi-point sealing device 7.

Embodiment 2

As shown in FIG. 1 and FIG. 3, compared with embodiment 1, embodiment 2 has the following differences: the number of drainage channels 7-7 and water leakage channels 7-9 on two sides of the inlet water intake channel 7-2 is changed from four to one, and the drainage channel 7-7 located on the outside of the combined tooth seal 7-6, which is the farthest from the inlet of the intake channel 7-2. As soon as the channel 7-9 of the water leak begins to leak during operation of the cutting mechanism used in mining equipment, this indicates that the entire multipoint sealing device 7 is faulty and should be checked, and the corresponding seals should be replaced.

The multi-point sealing device 7 in embodiment 2 is simple and reliable in design, and the service life of the entire combination of toothed combination seals 7-6 can be effectively controlled. Such a multi-point sealing device 7 is applicable to the rotating seals of an auxiliary high-pressure water jet in the cutting mechanism used in mining equipment in engineering applications.

Although the present invention has been demonstrated and described with reference to some preferred embodiments, the present invention is not limited to this. Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit and scope of the present invention. All such variations and modifications should be considered as falling within the protection scope of the present invention.

Claims (13)

1. The multipoint sealing device of the auxiliary high-pressure water jet cutting mechanism used in mining equipment, characterized in that the multipoint sealing device (7) contains - a water supply housing (7-1) and a water supply sleeve (7-4), moreover, a water supply sleeve (7-4) and a water supply case (7-1) are connected in series between the cutting shaft (1) and the capacity (4) for cutting the cutting mechanism used in mining equipment, a water supply sleeve (7-4) is attached to the shaft (1) for cutting, and a water supply case (7-1) is attached to the cutting container (4), while a water supply sleeve (7-4) and a water supply case (7-1) are made with the possibility of free rotation with respect to each other; - the inlet water intake channel (7-2), made radially through the water supply case (7-1), water supply sleeve (7-4) and the shaft (1) for cutting and, respectively, communicating with the inlet (4-1) for the water of the tank ( 4) providing cutting and the main flow channel (1-1) of the shaft (1) for cutting; the two sides of the inlet water inlet channel (7-2) respectively comprise an O-shaped first O-ring (7-3), a combined tooth seal (7-6) and an O-shaped second O-ring (7-8); moreover, the first O-ring (7-3) and the serrated combination seal (7-6), respectively, are made on the contact surface between the cutting shaft (1) and the water supply sleeve (7-4) and on the contact surface between the water supply sleeve ( 7-4) and a water supply case (7-1) on two sides of the inlet water intake channel (7-2); a drainage chute (7-7) is made on a water supply housing (7-1) on the side of the combined tooth seal (7-6), away from the inlet water intake channel (7-2); the second O-ring (7-8) is made on the contact surface between the water supply housing (7-1) and the cutting capacity (4) on both sides of the inlet water intake channel (7-2) and on the side of the drainage channel (7- 7) away from the inlet water intake channel (7-2); and the channel (7-9) for water leakage, communicating with the drainage trough (7-7), is made on the tank (4) for cutting. 2. The multipoint sealing device of the auxiliary high-pressure water jet of the cutting mechanism used in mining equipment according to claim 1, characterized in that the combined tooth seals (7-6) on each side of the inlet water intake channel (7-2) are made in an amount of at least least two. 3. The multipoint sealing device of the auxiliary high-pressure water jet of the cutting mechanism used in mining equipment according to claim 2, characterized in that the drainage grooves (7-7) and gear combined seals (7-6) are made in the same amount and are mutually -unique compliance with each other.

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