Secondary negative pressure dust collector for roadheader

Abstract

The present invention relates to the technical field of dust suppressor devices, and specifically to a secondary negative pressure dust suppressor for a tunnel boring machine. The nozzle is rotatably connected to the inside of a water chamber of a nozzle, and a pull rod is pulled by a fine-tuning motor to pull the nozzle, and a sealing arrangement of a telescopic ring between the water spray port and the nozzle is coordinated, so that the water spray end of the nozzle can be dispersed or aggregated, thereby changing the angle and range of the fog field, and better dust reduction can be performed for different dust fields.

Description

Technical Field

[0001] The invention relates to the technical field of dust suppressor devices, in particular to a secondary negative pressure dust suppressor for a roadheader. Background Art

[0002] The secondary negative pressure dust suppressor for roadheaders (hereinafter referred to as dust suppressor) is mainly used in underground coal mines where high-pressure spray dust suppression is required. It is one of the key equipment for high-pressure spray dust suppression for various roadheaders and some fully mechanized excavation working faces. It can also dilute the gas accumulation near the cutting drum when used in high-gas mines. Due to the design limitations of the dust suppressor itself, the fog field angle range of the spray field generated by the dust suppressor on the market is single. When adjusting the working parameters, the fog field angle generated by the same spray dust suppressor does not change much, and cannot cope with different dust fields, thus failing to perform dust suppression better. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a secondary negative pressure dust suppressor for a roadheader with an adjustable fog field angle range.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a secondary negative pressure dust suppressor for a tunnel boring machine, comprising a nozzle, a water cavity is arranged in the nozzle, a water pipe is connected to the rear side of the nozzle, and the water pipe is connected to the water cavity; a plurality of water spray ports are arranged on the front side of the nozzle, each of the water spray ports is provided with a nozzle, and the side of the nozzle away from the water spray end is arranged in the water cavity and is connected to the water cavity; a part of the nozzle located in the water cavity is provided with a mounting sleeve, and the mounting sleeve is rotatably connected to the inner side wall of the water cavity through a connecting piece; a plurality of extension rods are provided on the side of the mounting sleeve away from the water spray end of the nozzle. If All of the extension rods are fixed on the same disc; a disc is provided on the side of several of the discs facing away from the extension rod, and a pull rod is connected between several of the discs and the discs, and both ends of each of the pull rods are provided with a hinge seat, and the two ends of the pull rod are respectively hinged to the disc and the disc through the hinge seat; a movable column is provided on the side of the disc facing away from the pull rod, and the movable column passes through the outside of the nozzle, and the movable column is slidably connected to the nozzle; a threaded groove is provided on the end side of the movable column located outside the nozzle, and an adjusting rod is threadedly connected to the threaded groove, and a fine-tuning motor is transmission-connected to the adjusting rod.

[0005] Furthermore, a telescopic ring is provided on the inner side wall of each water spray outlet, and the telescopic ring is sleeved on the outer peripheral side of the nozzle, so that the nozzle and the water spray outlet are connected through a sealing connection.

[0006] As an optimization, a nozzle seat is provided at the lower side of the nozzle, a U-shaped protective cover with front and rear openings is provided on the outer peripheral side cover of the nozzle, a bottom plate is provided at the bottom of the protective cover, and the nozzle is connected to the nozzle seat and the bottom plate.

[0007] As an optimization, the connecting piece is a universal ball seat, which includes a ball seat fixed on the inner wall of the water chamber, a universal ball is rotatably and non-detachably connected inside the ball seat, and the mounting sleeve is fixedly connected to the universal ball.

[0008] As an optimization, the connecting piece is a hinged seat.

[0009] As an optimization, a movable port is opened at a position corresponding to the movable column on the rear side of the nozzle, the movable column passes through the movable port to the outside of the nozzle, and the movable column can slide along the axial direction relative to the movable port; a sealing ring is provided at the connection position between the movable column and the movable port.

[0010] As an optimization, the outer side cover of the fine-tuning motor is provided with a motor housing, the bottom of the motor housing is provided with supporting feet, and the supporting feet are fixed to the bottom plate.

[0011] As an optimization, a magnetic base is provided on the lower side of the base plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the secondary negative pressure dust suppressor for the tunnel boring machine provided by the present invention rotates the nozzle to be connected to the water chamber of the nozzle, and pulls the pull rod through a fine-tuning motor to pull the nozzle, and cooperates with the sealing setting of the telescopic ring between the water spray port and the nozzle, so that the water spray end of the nozzle can be dispersed or aggregated, thereby changing the angle and range of the fog field, and can better suppress dust for different dust fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the axonometric structure of the present invention;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0015] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0016] Figure 4 It is a schematic diagram of the present invention in use. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The secondary negative pressure dust suppressor for a tunnel boring machine provided by the present invention mainly comprises a nozzle 1, a nozzle seat 2 is connected to the lower side of the nozzle 1, a U-shaped protective cover 3 with front and rear openings is provided on the outer peripheral side cover of the nozzle 1, a bottom plate 4 is provided at the bottom of the protective cover 3, and the nozzle 1 is fixed to the bottom plate 4 through the nozzle seat 2. A magnetic base 5 is provided on the lower side of the bottom plate 4, so that the device can be connected to the body of the tunnel boring machine (not shown in the figure) through the magnetic base 5. A water cavity 6 is provided inside the nozzle 1, a water pipe 7 is connected to the rear side of the nozzle 1, and the water pipe 7 is connected to an external water source so that the external water source can enter the nozzle 1, and a water outlet 8 is provided on the front side of the nozzle 1 so that the water entering the water cavity 6 can be sprayed out at the water outlet 8 to cooperate with the operation of the tunnel boring machine for dust reduction treatment.

[0021] A nozzle 9 is provided on each water spray port 8 , and the side of the nozzle 9 facing away from the water spray end is arranged in the water cavity 6 and communicated with the water cavity 6 , so that the water in the water cavity 6 can enter the nozzle 9 and be sprayed out from the water spray end of the nozzle 9 .

[0022] The part of the nozzle 9 located in the water cavity 6 is connected to a mounting sleeve 10, which is sleeved on the outer peripheral side of the nozzle 9. A connecting piece is provided at a position corresponding to each nozzle on the inner side wall of the water cavity 6, and the nozzle 9 is rotatably connected to the inner side wall of the water cavity 6 through the connecting piece. A telescopic ring 12 made of waterproof material is provided on the inner side wall of each water spout 8. The telescopic ring 12 is made of soft material, such as rubber, so as to change the angle of the nozzle 9. The telescopic ring 12 is sleeved on the outer peripheral side of the nozzle 9, so that the nozzle 9 and the water spout 8 are sealed and connected through the telescopic ring 12.

[0023] In the present invention, the connecting piece is a universal ball seat, which includes a ball seat 11 fixed on the inner wall of the water chamber 6, and a universal ball 13 is connected to the ball seat 11 so as to rotate and not detach. The mounting sleeve 10 is fixedly connected to the universal ball 13, thereby fixing the nozzle 9 in the water chamber.

[0024] As another alternative implementation, the connecting member may also be a hinged seat (not shown in the figure).

[0025] A plurality of extension rods 14 are fixed to the side of each mounting sleeve 10 away from the water spraying end of the nozzle 9, and the plurality of extension rods 14 are all fixed on the same disc 15. A disc 16 is provided on the side of the plurality of discs 15 away from the extension rod 14. The plurality of discs 15 and the discs 16 are connected to each other through a pull rod 17, and both ends of the pull rod 17 are connected to hinge seats 18, so that the two ends of the pull rod 17 are respectively hinged to the disc 15 and the disc 16 through the hinge seats 18.

[0026] A movable column 19 is fixed to the side of the disc 16 away from the pull rod 17. A movable port matching the movable column 19 is provided at a position corresponding to the movable column 19 on the rear side of the nozzle 1. The movable column 19 passes through the movable port to the outside of the nozzle 1, and the movable column 19 can slide along the axial direction relative to the movable port. A sealing ring 20 is provided at the position where the movable column 19 is connected to the movable port to prevent leakage at the connection between the two.

[0027] The movable column 19 is provided with a thread groove 21 at one end thereof extending through the nozzle 1. An adjusting rod 22 is connected to the inner thread of the thread groove 21. The end of the adjusting rod 22 which is away from the thread groove 21 is connected to a fine-tuning motor 23. The fine-tuning motor 23 can drive the adjusting rod 22 to rotate, thereby causing the movable column 19 to drive the disc 16 to move along the axis. When the position of the disc 16 changes, the nozzle 9 can be pulled by the pull rod 17, so that the nozzle 9 rotates with the connecting piece as the fulcrum, thereby realizing that the water spraying ends of several nozzles 9 can be gathered or dispersed, thereby timely adjusting the fog field angle according to the dust situation of the on-site operation.

[0028] The outer side cover of the fine-tuning motor 23 is provided with a motor housing 24 , and the bottom of the motor housing 24 is provided with a support foot 25 , which is fixed on the bottom plate 4 to protect and fix the fine-tuning motor 23 .

[0029] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. The secondary negative pressure dust suppressor of the roadheader is characterized by: The invention comprises a nozzle, wherein a water cavity is arranged in the nozzle, and a water pipe is connected to the rear side of the nozzle, and the water pipe is connected to the water cavity; a plurality of water spraying ports are arranged at the front side of the nozzle, and a nozzle is arranged at each water spraying port, and a side of the nozzle away from the water spraying end is arranged in the water cavity and connected to the water cavity; a mounting sleeve is arranged on the part of the nozzle located in the water cavity, and the mounting sleeve is rotatably connected to the inner side wall of the water cavity through a connecting piece; a plurality of extension rods are arranged on the side of the mounting sleeve away from the water spraying end of the nozzle, and the plurality of extension rods are fixed on the same disc; A disc is provided on the side of several of the discs facing away from the extension rod, and a pull rod is connected between several of the discs and the discs. Both ends of each of the pull rods are provided with a hinge seat, and the two ends of the pull rod are respectively hinged to the disc and the disc through the hinge seat; a movable column is provided on the side of the disc facing away from the pull rod, and the movable column passes through the outside of the nozzle, and the movable column is slidably connected to the nozzle; a threaded groove is provided on the end side of the movable column located outside the nozzle, and an adjusting rod is threadedly connected in the threaded groove, and a fine-tuning motor is transmission-connected to the adjusting rod.

2. The secondary negative pressure dust suppressor for a roadheader according to claim 1, characterized in that: A telescopic ring is provided on the inner side wall of each water spraying port, and the telescopic ring is sleeved on the outer peripheral side of the nozzle, so that the nozzle and the water spraying port are connected through a sealing connection.

3. The secondary negative pressure dust suppressor for a roadheader according to claim 1, characterized in that: A nozzle seat is arranged at the lower side of the nozzle, a U-shaped protective cover with front and rear openings is arranged at the outer peripheral side cover of the nozzle, a bottom plate is arranged at the bottom of the protective cover, and the nozzle passes through the nozzle seat and the bottom plate.

4. The secondary negative pressure dust suppressor for a roadheader according to claim 1, characterized in that: The connecting piece is a universal ball seat, which includes a ball seat fixed on the inner wall of the water cavity, a universal ball is connected in the ball seat so as to rotate and not be separated, and the mounting sleeve is fixedly connected to the universal ball.

5. The secondary negative pressure dust suppressor for a roadheader according to claim 1, characterized in that: The connecting piece is a hinged seat.

6. The secondary negative pressure dust suppressor for a roadheader according to claim 1, characterized in that: A movable port is provided at a position corresponding to the movable column on the rear side of the nozzle, the movable column passes through the movable port to the outside of the nozzle, and the movable column can slide along the axial direction relative to the movable port; a sealing ring is provided at the connection portion between the movable column and the movable port.

7. The secondary negative pressure dust suppressor for a roadheader according to claim 3, characterized in that: The outer side cover of the fine-tuning motor is provided with a motor shell, the bottom of the motor shell is provided with supporting feet, and the supporting feet are fixed on the bottom plate.

8. The secondary negative pressure dust suppressor for a roadheader according to claim 3, characterized in that: A magnetic base is provided on the lower side of the bottom plate.

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