CN214616519U - Combine and dig quick-witted spraying dust device - Google Patents

Abstract

The utility model discloses a spraying dust-settling device of a roadheader, belonging to the technical field of roadheaders, which comprises a gas-liquid mixing device and a spraying device, wherein the spraying device is arranged on an arm rod of the roadheader through a fixing device; the gas-liquid mixing device comprises a water injection pipe, a high-pressure gas pipe and a mixing shell, wherein the middle part of one end of the mixing shell is communicated with the high-pressure gas pipe, and the other end of the mixing shell is communicated with a connecting pipe; a closed annular cavity communicated with the water injection pipe is arranged on the outer side of one end of the high-pressure air pipe close to the mixing shell; the closed ring cavity is communicated with the mixing shell through the injection hole. Compressed gas enters at a high speed through the high-pressure gas pipe, water is injected through the injection holes, is mixed with the compressed gas and is sprayed through the spraying device, so that the atomization is sufficient, and the dust settling effect is good; the spraying device sprays towards the tunneling position all the time, so that the dust diffusion range is effectively reduced; compressed air is used as a power source, so that sparks are avoided, and the safety of tunneling operation is improved; the space occupied is small, and the device can be flexibly applied to narrow roadway space.

Description

Combine and dig quick-witted spraying dust device

Technical Field

The utility model belongs to the technical field of combine the machine of digging, specifically speaking is a combine machine of digging spraying dust device.

Background

The fully-mechanized excavating machine is a comprehensive mechanized device integrating multiple functions of tunneling, rock loading, coal transportation, even supporting and nailing. After the comprehensive mechanical tunneling is generally used, compared with a tunneling process of drilling and blasting, the tunneling progress can be increased by more than 30 times, and the method is widely applied to roadway operation.

During the tunneling process of the roadheader, a large amount of dust can be generated, the operation environment of an underground roadway can be seriously polluted, and even dust explosion safety accidents can be generated; aiming at the problem of dust pollution of the fully-mechanized roadheader, dust is usually collected through an air draft collection system and discharged out of a roadway, but the dust removal effect is poor, leakage often occurs, and dust removal is not thorough; the dust draft collection system has a large layout space, cannot be well applied to a narrow roadway environment, and is high in construction cost.

SUMMERY OF THE UTILITY MODEL

The dust-removing system aims to solve the problems that dust generated in tunneling operation is collected and discharged through an air draft collecting system, and the dust-removing effect is poor; lay the space big, can't be well suitable for to constrictive tunnel environment, and its construction cost is high problem, the utility model provides a combine quick-witted spraying dust device of digging.

The utility model discloses a realize through following technical scheme.

A spraying dust-settling device of a fully-mechanized excavating machine comprises a gas-liquid mixing device and a spraying device which are connected through a connecting pipe, wherein the spraying device is arranged on an arm rod of the excavating machine through a fixing device; the gas-liquid mixing device comprises a water injection pipe, a high-pressure gas pipe and a mixing shell, wherein the middle part of one end of the mixing shell is communicated with the high-pressure gas pipe, and the other end of the mixing shell is communicated with the connecting pipe; a closed annular cavity communicated with the water injection pipe is arranged on the outer side of one end, close to the mixing shell, of the high-pressure air pipe; the closed ring cavity is communicated with the mixing shell through injection holes distributed on the outer side of the high-pressure air pipe in an annular array mode. The water injection pipe is connected with water, the high-pressure air pipe is connected with compressed air, the compressed air enters the middle part of one end of the mixing shell at a high speed by utilizing a Venturi structure, negative pressure is formed at the outer ring of a compressed air inlet, the water is injected into the mixing shell through the injection hole and is fully mixed with the compressed air, and the water is conveyed to the spraying device through the connecting pipe to be sprayed, so that the spraying power is strong, the atomization is full, and the dust removal and dust fall effects are good; the spraying device is arranged on the arm rod of the fully-mechanized excavating machine, and the connecting pipe can be flexibly bent in the excavating process, so that the spraying device is always sprayed towards the excavating position, the dust diffusion range is effectively reduced, the dust removal effect is good, the excavating operation environment is greatly improved, and the safe operation coefficient is improved; only compressed air is used as a power source, and electric power is not used, so that the generation of sparks is avoided, and the safety of tunneling operation is improved; overall structure is simple, and the fill is for a short time, can be applicable to the tunnelling environment operation in narrow and small tunnel space more in a flexible way, and the practicality is good.

The utility model discloses a further improvement still, mix the casing and be the horn structure, its osculum end middle part with high-pressurepipe is connected, its macrostoma end with the connecting pipe is connected. The gas-liquid mixture body increases along the bore of mixing the casing gradually, makes the quick pressure boost diffusion of gas-liquid mixture body, makes the atomizing more abundant.

The utility model is further improved in that the injection holes are arranged along the direction far away from the closed ring cavity in a way of inclining towards the center; and they are spirally arranged in the same direction. The injection hole has a better injection effect on moisture, and the injected moisture can rotate and collide at a high speed in the mixing shell, so that gas-liquid mixing is more sufficient and thorough, atomization is better, and a good dust settling effect is ensured.

The utility model discloses a further improvement still, the water injection pipe with be equipped with the storage water tank between the closed ring chamber, the inside filter screen that is equipped with of storage water tank. The filter screen filters impurities in the water, so that the influence on a spraying device is avoided; the water tank stores water, can guarantee to have certain water pressure to the ring chamber, makes compressed air to the effect of drawing of moisture better.

The utility model is further improved, the spraying device comprises a first spraying pipe, a second spraying pipe, a third spraying pipe and a spray head; the first spray pipe is communicated with the rear end of the inner cavity of the spray head; the second spray pipe and the third spray pipe are respectively communicated with the side wall of the inner cavity of the spray head in a tangent mode and are arranged in the same direction in a tangent mode; the connecting pipe comprises a first connecting pipe, a second connecting pipe and a third connecting pipe which are respectively connected with the first spray pipe, the second spray pipe and the third spray pipe; and the first connecting pipe, the second connecting pipe and the third connecting pipe are respectively provided with a control valve. The flow of the gas-liquid mixture in each spray pipe is controlled by controlling the control valve on each connecting pipe, so that the flexible application is ensured; the gas-liquid mixture body that second spray tube, third spray tube introduced to the shower nozzle can make the gas-liquid mixture body rotation stirring that first spray tube introduced to each other fully impact, further realize the gas-liquid intensive mixing, guarantee good atomization effect.

The utility model is further improved in that the spray head comprises a second spray head, a first spray head and a third spray head which are vertically arranged; the second spray pipe is respectively communicated with the right sides of the inner cavities of the second spray head, the first spray head and the third spray head in a tangent mode through a right connecting pipe; and the third spray pipe is respectively communicated with the left sides of the inner cavities of the second spray head, the first spray head and the third spray head in a tangent mode through a left connecting pipe. A larger spraying coverage area is ensured, and the dust settling effect is improved; simple structure and easy realization.

The utility model discloses a further improvement still, fixing device rear end with sprinkler rotates to be connected, its front end through telescopic cylinder with the sprinkler front end is connected. The telescopic cylinder is controlled to stretch by compressed gas, so that the flexible adjustment of the spraying directions of the three spray heads can be realized, the spray head is better suitable for various operation working conditions, and the practicability is good.

The utility model discloses a further improvement still, fixing device is last to have seted up fixed slotted hole, wear to be equipped with in the fixed slot hole and combine the staple bolt of digging quick-witted armed lever fixed connection. The anchor ear penetrates through the fixed slot hole to be fixedly connected with the arm rod of the fully-mechanized excavating machine, the structure is simple, and the connection is stable and reliable.

The utility model discloses a further improvement still, fixing device downside covers there is the slipmat of rubber material. The anti-slip pad can prevent the fixing device and the tunneling arm-entering rod from slipping, and the firmness of fixed installation is ensured.

According to the technical scheme provided by the utility model, the beneficial effects are that: the water injection pipe is connected with water, the high-pressure air pipe is connected with compressed air, the compressed air enters the middle part of the small end of the mixing shell at a high speed by utilizing a Venturi structure, negative pressure is formed at the outer ring of the compressed air inlet, water is injected into the mixing shell through the injection hole and is fully mixed with the compressed air, and the water is conveyed to the spraying device through the connecting pipe for spraying, so that the spraying power is strong, the atomization is full, and the dust removal and dust fall effects are good; the spraying device is arranged on the arm rod of the fully-mechanized excavating machine, the gas-liquid mixing device is arranged on the main body of the excavating machine, and the connecting pipe can be flexibly bent in the excavating process, so that the spraying device is always sprayed towards the excavating position, the dust diffusion range is effectively reduced, the dust removal effect is good, the excavating operation environment is greatly improved, and the safe operation coefficient is improved; only compressed air is used as a power source, and electric power is not used, so that the generation of sparks is avoided, and the safety of tunneling operation is improved; overall structure is simple, and the fill is for a short time, can be applicable to the tunnelling environment operation in narrow and small tunnel space more in a flexible way, and the practicality is good.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the internal structure of the gas-liquid mixing device according to the embodiment of the present invention.

Fig. 3 is a schematic view of the internal structure of the spraying device according to the embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of a-a in fig. 3.

In the drawings: 1. gas-liquid mixing device, 11, water injection pipe, 12, high-pressure gas pipe, 13, water storage tank, 14, closed annular cavity, 15, injection hole, 16, mixing shell, 17, filter screen, 2, sprinkler, 21, first spray pipe, 22, second spray pipe, 23, third spray pipe, 24, left connecting pipe, 25, right connecting pipe, 26, first spray head, 27, second spray head, 28, third spray head, 31, first connecting pipe, 32, second connecting pipe, 33, third connecting pipe, 34, control valve, 4, fixing device, 41, fixing slotted hole, 42, telescopic cylinder, 43, non-slip mat.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

As shown in fig. 1 and 2, the utility model discloses a combine-excavator spraying dust-settling device, which comprises a gas-liquid mixing device 1 and a spraying device 2 which are connected through a connecting pipe, wherein the spraying device 2 is arranged on an arm rod of an excavator through a fixing device 4, and the connecting pipe is a hose and can be freely bent; the gas-liquid mixing device 1 comprises a water injection pipe 11, a high-pressure gas pipe 12 and a mixing shell 16 with a horn structure enclosed type (namely, the mixing shell 16 is in a shape of a truncated cone shell), the middle part of the small-mouth end of the mixing shell 16 is communicated with the high-pressure gas pipe 12, and the large-mouth end of the mixing shell is communicated with the connecting pipe; a closed annular cavity 14 communicated with the water injection pipe 11 is arranged on the outer side of one end, close to the mixing shell 16, of the high-pressure air pipe 12; the closed annular cavity 14 is communicated with the mixing shell 16 through injection holes 15 distributed on the outer side of the high-pressure air pipe 12 in an annular array mode, and the injection holes 15 are formed in the end face of the small opening end of the mixing shell 16. The water injection pipe 11 is connected with water, the high-pressure air pipe 12 is connected with compressed air, and by utilizing a Venturi structure, the compressed air enters at a high speed in the middle of the small end of the mixing shell 16, negative pressure is formed at the outer ring of a compressed air inlet, water is injected into the mixing shell 16 through the injection hole 15 and is fully mixed with the compressed air, and the water is conveyed to the spraying device 2 through the connecting pipe for spraying, so that the spraying power is strong, the atomization is full, and the dust removal and dust fall effects are good; the spraying device 2 is arranged on the arm rod of the fully-mechanized excavating machine, the gas-liquid mixing device 1 is arranged on the body of the excavating machine, and the connecting pipe can be flexibly bent in the excavating process, so that the spraying device 2 is always sprayed towards the excavating position, the dust diffusion range is effectively reduced, the dust removal effect is good, the excavating operation environment is greatly improved, and the safety operation coefficient is improved; only compressed air is used as a power source, and electric power is not used, so that the generation of sparks is avoided, and the safety of tunneling operation is improved; overall structure is simple, and the fill is for a short time, can be applicable to the tunnelling environment operation in narrow and small tunnel space more in a flexible way, and the practicality is good.

The injection hole 15 is arranged in a manner of inclining towards the center along the direction far away from the closed ring cavity 14; and the injection holes 15 are spirally arranged in the same direction. The injection hole 15 has a better injection effect on moisture, and the injected moisture can rotate and collide at a high speed in the mixing shell 16, so that gas-liquid mixing is more sufficient and thorough, atomization is better, and a good dust settling effect is ensured.

As shown in fig. 2, a water storage tank 13 is arranged between the water injection pipe 11 and the closed annular cavity 14, the water injection pipe 11 is communicated with the upper part of the water storage tank 13, the annular cavity 14 is communicated with the bottom of the water storage tank 13, a filter screen 17 is arranged at the communication position of the annular cavity 14 inside the water storage tank 13, and the filter screen 17 filters impurities in water to avoid influencing the spraying device 2; a drain pipe for periodically discharging filtered impurities is also arranged at the bottom of the water storage tank 13. The water is injected into the water storage tank 13, so that a certain water pressure can be ensured to the annular cavity 14, and the injection effect of the compressed air on the moisture is better.

As shown in fig. 3, the spraying device 2 comprises a first spray pipe 21, a second spray pipe 22, a third spray pipe 23 and a spray head; the first spray pipe 21 is communicated with the rear end of the inner cavity of the spray head, and the access direction is along the axial direction of the spray head; the second spray pipe 22 and the third spray pipe 23 are respectively communicated with the side wall of the inner cavity of the spray head in a tangent mode and are arranged in the same direction in a tangent mode; the connecting pipes comprise a first connecting pipe 31, a second connecting pipe 32 and a third connecting pipe 33 which are respectively connected with the first spray pipe 21, the second spray pipe 22 and the third spray pipe 23; the first connection pipe 31, the second connection pipe 32 and the third connection pipe 33 are respectively provided with a control valve 34. The flow of the gas-liquid mixture in each spray pipe is controlled by controlling the control valve 34 on each connecting pipe, so that the flexibility and the applicability are ensured; the gas-liquid mixture body that second spray tube 22, third spray tube 23 introduced to the shower nozzle can make the gas-liquid mixture body rotation stirring that first spray tube 21 introduced to impact each other fully, further realize the gas-liquid intensive mixing, guarantee good atomization effect.

As shown in fig. 3 and 4, the spray heads include a second spray head 27, a first spray head 26 and a third spray head 28 which are vertically arranged from top to bottom; the second spray pipe 22 is respectively communicated with the right sides of the inner cavities of the second spray head 27, the first spray head 26 and the third spray head 28 in a tangent mode through a right connecting pipe 25; the third spray pipe 23 is tangentially communicated with the left sides of the inner cavities of the second spray head 27, the first spray head 26 and the third spray head 28 through a left connecting pipe 24. The water outlet ranges of the first spray head 26, the second spray head 27 and the third spray head 28 are all distributed transversely. Each spray head can be automatically controlled to be closed, so that a large spraying coverage area is ensured, and the dust settling effect is improved; simple structure and easy realization.

As shown in fig. 3, the rear end of the fixing device 4 is rotatably connected with the rear end of the bottom of the spraying device 2, the front end of the fixing device 4 is connected with the front end of the bottom of the spraying device 2 through a telescopic cylinder 42, and both ends of the telescopic cylinder 42 are rotatably connected. A fixing slot hole 41 is formed in the fixing device 4, and a hoop fixedly connected with the arm rod of the roadheader is arranged in the fixing slot hole 41 in a penetrating manner. The lower side of the fixing device 4 is covered with a rubber mat 43. The anti-slip pad 43 can prevent the fixing device 4 and the tunneling arm rod from slipping, and the firmness of fixed installation is ensured; the telescopic cylinder 42 is controlled to stretch by compressed gas, so that the flexible adjustment of the spraying directions of the three spray heads can be realized, the spray head is better suitable for various working conditions, and the practicability is good.

The spraying dust-settling device of the fully-mechanized excavating machine is simple in structure, small in space occupation, capable of being more flexibly suitable for tunneling environment operation in a narrow roadway space and good in practicability; water is injected through the water injection pipe, compressed gas is injected through the high-pressure gas pipe, the compressed gas enters the middle part of the small opening end of the mixing shell at a high speed by utilizing a Venturi structure, negative pressure is formed at the outer ring of the compressed gas inlet, water is injected into the mixing shell through the injection hole and is fully mixed with the compressed gas, and the water is conveyed to the spraying device through the connecting pipe for spraying, so that the spraying power is strong, the atomization is full, and the dust removal and dust fall effects are good; the spraying device is arranged on the arm rod of the fully-mechanized excavating machine, the gas-liquid mixing device is arranged on the main body of the excavating machine, and the connecting pipe can be flexibly bent in the excavating process, so that the spraying device is always sprayed towards the excavating position, the dust diffusion range is effectively reduced, the dust removal effect is good, the excavating operation environment is greatly improved, and the safe operation coefficient is improved; only compressed air is used as a power source, and electric power is not used, so that the generation of sparks is avoided, and the safety of tunneling operation is improved.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative relationships in positions, if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The spraying dust-settling device of the fully-mechanized excavating machine is characterized by comprising a gas-liquid mixing device (1) and a spraying device (2) which are connected through a connecting pipe, wherein the spraying device (2) is arranged on an arm rod of the excavating machine through a fixing device (4); the gas-liquid mixing device (1) comprises a water injection pipe (11), a high-pressure gas pipe (12) and a mixing shell (16), wherein the middle part of one end of the mixing shell (16) is communicated with the high-pressure gas pipe (12), and the other end of the mixing shell is communicated with the connecting pipe; a closed annular cavity (14) communicated with the water injection pipe (11) is arranged on the outer side of one end, close to the mixing shell (16), of the high-pressure air pipe (12); the closed annular cavity (14) is communicated with the mixing shell (16) through injection holes (15) distributed on the outer side of the high-pressure air pipe (12) in an annular array.

2. The roadheader spraying dust-settling device as claimed in claim 1, wherein the mixing shell (16) is in a horn structure, the middle part of the small end of the mixing shell is connected with the high-pressure air pipe (12), and the large end of the mixing shell is connected with the connecting pipe.

3. The spraying dust-settling device of the roadheader as claimed in claim 1, wherein the injection hole (15) is arranged in a manner of inclining towards the center along the direction far away from the closed ring cavity (14); and they are spirally arranged in the same direction.

4. The spraying and dust-settling device of the roadheader as claimed in claim 1, wherein a water storage tank (13) is arranged between the water injection pipe (11) and the closed annular cavity (14), and a filter screen (17) is arranged inside the water storage tank (13).

5. The roadheader spraying dust-settling device as claimed in claim 1, characterized in that the spraying device (2) comprises a first spray pipe (21), a second spray pipe (22), a third spray pipe (23) and a spray head; the first spray pipe (21) is communicated with the rear end of the inner cavity of the spray head; the second spray pipe (22) and the third spray pipe (23) are respectively communicated with the side wall of the inner cavity of the spray head in a tangent mode and are arranged in the same direction in a tangent mode; the connecting pipes comprise a first connecting pipe (31), a second connecting pipe (32) and a third connecting pipe (33) which are respectively connected with the first spray pipe (21), the second spray pipe (22) and the third spray pipe (23); and the first connecting pipe (31), the second connecting pipe (32) and the third connecting pipe (33) are respectively provided with a control valve (34).

6. The roadheader spraying dust-settling device as claimed in claim 5, wherein the spray heads comprise a second spray head (27), a first spray head (26) and a third spray head (28) which are vertically arranged; the second spray pipe (22) is respectively communicated with the right sides of the inner cavities of the second spray head (27), the first spray head (26) and the third spray head (28) in a tangent mode through a right connecting pipe (25); the third spray pipe (23) is respectively communicated with the left sides of the inner cavities of the second spray head (27), the first spray head (26) and the third spray head (28) in a tangent mode through a left connecting pipe (24).

7. The roadheader spraying dust-settling device as claimed in claim 1, characterized in that the rear end of the fixing device (4) is rotatably connected with the spraying device (2), and the front end of the fixing device is connected with the front end of the spraying device (2) through a telescopic cylinder (42).

8. The spraying and dust-settling device of the roadheader as claimed in claim 7, wherein the fixing device (4) is provided with a fixing slot hole (41), and a hoop fixedly connected with the arm rod of the roadheader is arranged in the fixing slot hole (41) in a penetrating manner.

9. The spraying and dust falling device of the roadheader as claimed in claim 7, wherein the lower side surface of the fixing device (4) is coated with a rubber antiskid pad (43).

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