A long-distance spraying device

Abstract

The present invention discloses a remote spraying device, comprising a nozzle, a spraying machine, and an air compressor; further comprising a controller, a first sealed container, a second sealed container, a first electrically controlled valve, a second electrically controlled valve, a first inlet check valve, a second inlet check valve, a first outlet check valve, and a second outlet check valve; the first inlet check valve and the second inlet check valve are respectively connected in series on the pipeline connecting the spraying machine and the first sealed container and the second sealed container, and the first inlet check valve and the second inlet check valve are respectively connected in series on the pipeline connecting the air compressor and the first sealed container and the second sealed container; the first electrically controlled valve and the second electrically controlled valve are respectively connected in series on the pipeline connecting the air compressor and the first sealed container and the second sealed container; the first electrically controlled valve and the second electrically controlled valve are electrically connected to the controller. The invention solves the problem of the prior art that the upper limit of the spraying distance is low while ensuring continuous spraying.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying devices, in particular to a long-distance spraying device. Background Art

[0002] Anchor shotcrete support is a common support method for underground coal mine tunnels. The commonly used shotcrete equipment is a small and lightweight pneumatic concrete shotcrete machine with a rated spraying distance of approximately 80 meters. However, for most newly excavated underground coal mine tunnels, the spraying distance of existing shotcrete equipment is too short.

[0003] To solve this problem, the prior art has proposed a method of connecting the spraying machine nozzle to the grouting machine through a tee, such as the Chinese patent "Long-Distance Tunnel Spraying Device for Coal Mines" 201120298307.6. However, the problem with this structure is that the longer the spraying distance, the more the air pressure of the air compressor exerts air pressure on the spraying machine nozzle through the tee. The air pressure of the air compressor generates pressure on both the tee spraying machine side and the tee nozzle side. This causes the spraying pressure of the spraying machine to be reduced by the air pressure, thereby reducing the total spraying pressure. In particular, when the force pushing the tee nozzle side to be filled with slurry is greater than or equal to the spraying pressure of the tee spraying machine side, the air pressure will prevent the spraying machine from discharging slurry or cause the spraying machine to reverse slurry and fail to work, which also leads to a low upper limit of the spraying distance of this type of spraying machine. Therefore, how to solve the above problems while ensuring continuous spraying is an issue that needs to be solved in this field. Summary of the Invention

[0004] In order to solve the above shortcomings and deficiencies of the prior art, the purpose of the present invention is to provide a long-distance spraying device.

[0005] The technical solution of the present invention is: a remote spraying device, comprising a spray head, a spraying machine and an air compressor;

[0006] It also includes a controller, a first sealed container, a second sealed container, a first electrically controlled valve, a second electrically controlled valve, a first inlet check valve, a second inlet check valve, a first outlet check valve, and a second outlet check valve;

[0007] The spraying machine is connected to the first sealed container and the second sealed container through pipelines respectively;

[0008] A first inlet check valve and a second inlet check valve are respectively connected in series on the pipeline connecting the shotcrete machine and the first sealed container and the second sealed container. The first inlet check valve and the second inlet check valve are connected in a conducting direction from the shotcrete machine to the first sealed container or the second sealed container.

[0009] The air compressor is connected to the first sealed container and the second sealed container through pipelines, and the pipelines connecting the air compressor and the first sealed container and the second sealed container are respectively connected in series with a first electrically controlled valve and a second electrically controlled valve;

[0010] The outlet of the first sealed container and the outlet of the second sealed container are converged at point A through a pipe, and are connected to the nozzle through a common pipe from point A;

[0011] The pipeline between the outlet of the first sealed container and point A is connected in series with a first outlet check valve, and the pipeline between the outlet of the second sealed container and point A is connected in series with a second outlet check valve;

[0012] The first electrically controlled valve is electrically connected to the controller, and the second electrically controlled valve is electrically connected to the controller.

[0013] Preferably, the first sealed container and the second sealed container are containers with an inverted cone at the bottom, the outlets of the first sealed container and the second sealed container are opened at the inverted cone tip at the bottom, and the inlets of the first sealed container and the second sealed container are opened at the top.

[0014] Furthermore, the first sealed container is installed on the ground via a first electronic scale, the first electronic scale is electrically connected to the controller, and the second sealed container is installed on the ground via a second electronic scale, the second electronic scale is electrically connected to the controller.

[0015] Further, it also includes a spraying room;

[0016] The spraying machine is arranged in the spraying room.

[0017] Furthermore, it also includes a dust removal device;

[0018] The dust removal device is arranged in the spraying room.

[0019] Furthermore, the dust removal device includes an exhaust fan, an exhaust duct and a sedimentation tank;

[0020] The exhaust fan is arranged just above the shotcrete machine and is connected to the sedimentation tank through an exhaust pipe.

[0021] Furthermore, the sedimentation tank includes a tank body, a first spray mechanism and a filter cloth;

[0022] The outlet of the exhaust duct is located in the pool body;

[0023] The spray mechanism is arranged above the tank body, the filter cloth is located in the sedimentation tank, and the filter cloth is located between the spray mechanism and the outlet of the exhaust pipe.

[0024] Furthermore, it also includes a second spray mechanism;

[0025] The second spray mechanism includes more than one, and the second spray mechanism is arranged in the exhaust duct and distributed along the length direction of the exhaust duct.

[0026] Further, it also includes a water curtain;

[0027] The water curtain comprises more than one water curtain, which is arranged in the exhaust duct and distributed along the length direction of the exhaust duct.

[0028] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention generates slurry through a spraying machine and inputs it into the first sealed container and the second sealed container respectively, and then uses a wind press to apply wind pressure to the first sealed container and the second sealed container respectively, so that the air pressure in the first sealed container and the second sealed container increases to drive the slurry to spray out of the first sealed container and the second sealed container; in order to ensure continuous spraying, the first sealed container and the second sealed container can be pressurized alternately by the wind press, and when the first sealed container contains more slurry, the second electrically controlled valve can be closed by opening the first electrically controlled valve, so that only the air pressure in the first sealed container is high enough to spray the slurry in the first sealed container from the nozzle; when the slurry in the first sealed container is less and more slurry is already stored in the second sealed container, the first electrically controlled valve can be closed and the second electrically controlled valve can be opened, so that only the air pressure in the second sealed container is high enough to spray the slurry in the second sealed container from the nozzle, and there is no interruption of slurry during use;

[0029] Due to the functions of the first inlet check valve and the second inlet check valve, even if the pressure in the first sealed container and the second sealed container is greater than the pressure of the shotcrete machine, the communication between the first sealed container and the second sealed container and the shotcrete machine can be blocked, thereby preventing the shotcrete machine from backflowing and causing the shotcrete machine to stop working;

[0030] At the same time, since the problem of slurry backflow of the spraying machine can be ignored, the upper limit of the spraying distance depends on the wind pressure of the wind compressor and the pressure resistance of the first sealed container and the second sealed container. Therefore, the upper limit of the spraying distance of the device is higher;

[0031] Due to the functions of the first outlet check valve and the second outlet check valve, the slurry sprayed from the first sealed container and the second sealed container will not enter each other, thus avoiding interruption of the slurry due to failure to enter the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the connection structure of the present invention;

[0033] Figure 2 It is a front view of the first sealed container of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the spraying room and dust removal device of the present invention;

[0035] Figure 4 It is a circuit connection block diagram of the present invention. DETAILED DESCRIPTION

[0036] The invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0037] Implementation Example 1:

[0038] In order to solve the problem of low upper limit of spraying distance under the premise of ensuring continuous spraying in the prior art, the present invention adopts a long-distance spraying device, including a nozzle 3, a spraying machine 1 and an air compressor 2; further comprising a controller 5, a first sealed container 4-1, a second sealed container 4-2, a first electrically controlled valve 7-1, a second electrically controlled valve 7-2, a first inlet check valve 6-1, a second inlet check valve 6-2, a first outlet check valve 8-1 and a second outlet check valve 8-2; the spraying machine 1 is connected to the first sealed container 4-1 and the second sealed container 4-2 through a pipeline; the first inlet check valve 6-1 and the second inlet check valve 6-2 are respectively connected in series on the pipelines connecting the spraying machine 1 and the first sealed container 4-1 and the second sealed container 4-2, and the conduction direction of the first inlet check valve 6-1 and the second inlet check valve 6-2 is from the spraying machine 1 to the first sealed container 4-1 and the second sealed container 4-2. The pulp machine 1 is connected to the first sealed container 4-1 or the second sealed container 4-2; the air compressor 2 is connected to the first sealed container 4-1 and the second sealed container 4-2 through a pipeline, and the pipeline connecting the air compressor 2 to the first sealed container 4-1 and the second sealed container 4-2 is respectively connected in series with a first electrically controlled valve 7-1 and a second electrically controlled valve 7-2; the outlet of the first sealed container 4-1 and the outlet of the second sealed container 4-2 converge at point A through a pipeline, and are connected to the nozzle 3 from point A through a common pipeline; the pipeline between the outlet of the first sealed container 4-1 and point A is connected in series with a first outlet check valve 8-1, and the pipeline between the outlet of the second sealed container 4-2 and point A is connected in series with a second outlet check valve 8-2; the first electrically controlled valve 7-1 is electrically connected to the controller 5, and the second electrically controlled valve 7-2 is electrically connected to the controller 5.

[0039] During use, the slurry generated by the spraying machine 1 is respectively input into the first sealed container 4-1 and the second sealed container 4-2, and then the wind pressure is applied to the first sealed container 4-1 and the second sealed container 4-2 respectively by the wind press, so that the air pressure in the first sealed container 4-1 and the second sealed container 4-2 is increased to drive the slurry to spray out of the first sealed container 4-1 and the second sealed container 4-2; in order to ensure continuous spraying, the first sealed container 4-1 and the second sealed container 4-2 can be pressurized alternately by the wind press. When the first sealed container 4-1 contains more slurry, By opening the first electrically controlled valve 7-1 and closing the second electrically controlled valve 7-2, only the air pressure in the first sealed container 4-1 is high enough to eject the slurry in the first sealed container 4-1 from the nozzle; when the slurry in the first sealed container 4-1 is small and a large amount of slurry is already stored in the second sealed container 4-2, the first electrically controlled valve 7-1 can be closed and the second electrically controlled valve 7-2 can be opened, so that only the air pressure in the second sealed container 4-2 is high enough to eject the slurry in the second sealed container 4-2 from the nozzle, and there is no interruption in the slurry during use;

[0040] Due to the functions of the first inlet check valve and the second inlet check valve, even if the pressure in the first sealed container 4-1 and the second sealed container 4-2 is higher than the pressure of the shotcrete machine 1, the communication between the first sealed container 4-1 and the second sealed container 4-2 and the shotcrete machine 1 can be blocked, thereby preventing the shotcrete machine 1 from backflowing and causing the shotcrete machine 1 to stop working;

[0041] At the same time, since the backflow problem of the spraying machine 1 can be ignored, the upper limit of the spraying distance depends on the wind pressure of the wind compressor and the pressure resistance of the first sealed container 4-1 and the second sealed container 4-2. Therefore, the upper limit of the spraying distance of the device is higher;

[0042] Due to the functions of the first outlet check valve 8-1 and the second outlet check valve 8-2, the slurry sprayed from the first sealed container 4-1 and the second sealed container 4-2 will not enter each other, thus avoiding the slurry not entering the nozzle 3 and being interrupted.

[0043] Preferably, the first sealed container 4-1 and the second sealed container 4-2 are containers with an inverted cone at the bottom, the outlets of the first sealed container 4-1 and the second sealed container 4-2 are opened at the tip of the inverted cone at the bottom, and the inlets of the first sealed container 4-1 and the second sealed container 4-2 are opened at the top.

[0044] This ensures that the slurry in the first sealed container 4 - 1 and the second sealed container 4 - 2 can always be discharged from the outlet under the action of air pressure without causing the problem of material accumulation.

[0045] Furthermore, the first sealed container 4-1 is installed on the ground through a first electronic scale 10-1, and the first electronic scale 10-1 is electrically connected to the controller 5; the second sealed container 4-2 is installed on the ground through a second electronic scale 10-2, and the second electronic scale 10-2 is electrically connected to the controller 5.

[0046] The weight of the first sealed container 4-1 and the second sealed container 4-2 can be measured by the first electronic scale 10-1 and the second electronic scale 10-2, thereby calculating the filling status of the slurry in the first sealed container 4-1 and the second sealed container 4-2, and feeding the filling status information back to the controller 5 as a signal for switching the first electric-controlled valve 7-1 to close the second electric-controlled valve 7-2, thereby realizing automatic spraying.

[0047] Furthermore, it also includes a spraying room 11; the spraying machine 1 is arranged in the spraying room 11.

[0048] The dust generated by the spraying machine 1 is covered by the spraying room 11.

[0049] Furthermore, it also includes a dust removal device; the dust removal device is arranged in the spraying room 11.

[0050] The storage device can reduce dust in the spraying room 11.

[0051] Furthermore, the dust removal device includes an exhaust fan 13, an exhaust duct 14 and a sedimentation tank 15; the exhaust fan 13 is arranged directly above the shotcrete machine 1, and the exhaust fan 13 is connected to the sedimentation tank 15 through the exhaust duct 14.

[0052] The dust in the spraying room 11 is discharged into the sedimentation tank 15 through the exhaust pipe 14 by the exhaust fan 13 for centralized recovery.

[0053] Furthermore, the sedimentation tank 15 includes a tank body 15-1, a first spray mechanism 15-3 and a filter cloth 15-2; the outlet of the exhaust duct 14 is located in the tank body 15-1; the spray mechanism is arranged above the tank body 15-1, and the filter cloth 15-2 is located in the sedimentation tank 15, and the filter cloth 15-2 is positioned between the spray mechanism and the outlet of the exhaust duct 14.

[0054] The dust discharged from the exhaust duct 14 is absorbed by the first spray mechanism 15-3 and dropped onto the filter cloth 15-2 to filter out larger dust particles, and the water that has absorbed the dust and been filtered is collected and precipitated by the pool body 15-1.

[0055] Furthermore, it also includes a second spray mechanism 16 ; the second spray mechanism 16 includes more than one, the second spray mechanism 16 is arranged in the exhaust duct 14 , and the second spray mechanism 16 is distributed along the length direction of the exhaust duct 14 .

[0056] The dust passing through the exhaust duct 14 is absorbed by the second spray mechanism 16 .

[0057] Furthermore, it also includes a water curtain 17 ; the water curtain 17 includes more than one, the water curtain 17 is arranged in the exhaust duct 14 , and the water curtain 17 is distributed along the length direction of the exhaust duct 14 .

[0058] The dust passing through the exhaust duct 14 is further absorbed by the water curtain 17 .

[0059] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A remote spraying device comprising a spray head (3), a spraying machine (1) and an air compressor (2); It is characterized in that It also includes a controller (5), a first sealed container (4-1), a second sealed container (4-2), a first electrically controlled valve (7-1), a second electrically controlled valve (7-2), a first inlet check valve (6-1), a second inlet check valve (6-2), a first outlet check valve (8-1), and a second outlet check valve (8-2); The spraying machine (1) is connected to the first sealed container (4-1) and the second sealed container (4-2) through pipelines; A first inlet check valve (6-1) and a second inlet check valve (6-2) are respectively connected in series on the pipelines connecting the shotcrete machine (1) and the first sealed container (4-1) and the second sealed container (4-2); the first inlet check valve (6-1) and the second inlet check valve (6-2) are connected in a conducting direction from the shotcrete machine (1) to the first sealed container (4-1) or the second sealed container (4-2); The air compressor (2) is connected to the first sealed container (4-1) and the second sealed container (4-2) through pipelines, and the pipelines connecting the air compressor (2) and the first sealed container (4-1) and the second sealed container (4-2) are respectively connected in series with a first electrically controlled valve (7-1) and a second electrically controlled valve (7-2); The outlet of the first sealed container (4-1) and the outlet of the second sealed container (4-2) converge at point A through a pipe, and are connected to the nozzle (3) through a common pipe from point A; The pipeline between the outlet of the first sealed container (4-1) and point A is connected in series with a first outlet check valve (8-1), and the pipeline between the outlet of the second sealed container (4-2) and point A is connected in series with a second outlet check valve (8-2); The first electrically controlled valve (7-1) is electrically connected to the controller (5), and the second electrically controlled valve (7-2) is electrically connected to the controller (5).

2. The remote spraying device according to claim 1, characterized in that: The first sealed container (4-1) and the second sealed container (4-2) are containers with an inverted cone at the bottom, the outlets of the first sealed container (4-1) and the second sealed container (4-2) are opened at the tip of the inverted cone at the bottom, and the inlets of the first sealed container (4-1) and the second sealed container (4-2) are opened at the top.

3. The remote spraying device according to claim 1 or 2, characterized in that: The first sealed container (4-1) is installed on the ground via a first electronic scale (10-1), the first electronic scale (10-1) is electrically connected to a controller (5), and the second sealed container (4-2) is installed on the ground via a second electronic scale (10-2), the second electronic scale (10-2) is electrically connected to the controller (5).

4. The remote spraying device according to claim 1, characterized in that: Also included is a shotcrete room (11); The spraying machine (1) is arranged in a spraying room (11).

5. The remote spraying device according to claim 4, characterized in that: Also includes a dust removal device; The dust removal device is arranged in the spraying room (11).

6. The remote spraying device according to claim 5, characterized in that: The dust removal device includes an exhaust fan (13), an exhaust duct (14) and a sedimentation tank (15); The exhaust fan (13) is arranged directly above the shotcrete machine (1), and the exhaust fan (13) is connected to the sedimentation tank (15) through an exhaust pipe (14).

7. The remote spraying device according to claim 6, characterized in that: The sedimentation tank (15) comprises a tank body (15-1), a first spray mechanism (15-3) and a filter cloth (15-2); The outlet of the exhaust duct (14) is located inside the pool body (15-1); The spray mechanism is arranged above the tank body (15-1), the filter cloth (15-2) is located in the sedimentation tank (15), and the filter cloth (15-2) is located between the spray mechanism and the outlet of the exhaust duct (14).

8. The remote spraying device according to claim 7, characterized in that: Also included is a second spray mechanism (16); The second spray mechanism (16) includes more than one second spray mechanism (16), which is arranged in the exhaust duct (14) and distributed along the length direction of the exhaust duct (14).

9. The remote spraying device according to claim 7, characterized in that: Also included is a water curtain (17); The water curtain (17) comprises more than one water curtain (17), which is arranged in the exhaust duct (14), and is distributed along the length direction of the exhaust duct (14).

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