Spraying device

Abstract

The utility model relates to the technical field of tunneling roadway dust fall, and provides a spraying device, which comprises a wind-water pipeline, a water inlet, a water outlet, an air outlet and an air inlet, a water inlet, a water outlet, an air outlet and an air outlet are formed in the wind-water pipeline, the water outlet and the air outlet are communicated with the air outlet, and the water outlet and the air inlet are communicated with the air outlet. The water spraying assembly is rotatably arranged on the air and water pipeline and connected with the water outlet, the water spraying assembly is provided with a plurality of nozzles, the nozzles are annularly arranged, each nozzle is arranged towards the outer side towards one side, and at least one part of water mist sprayed by at least one nozzle is opposite to the air outlet. According to the spraying device provided by the utility model, water mist sprayed by the nozzles drives the water spraying assembly to rotate relative to the air-water pipeline, so that automation and uniform distribution of spraying are realized. Meanwhile, water mist sprayed by the nozzle interacts with gas exhausted by the exhaust port, the gas is blown to the water mist, the diffusion range and the coverage area of the water mist are increased, and the atomization effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of tunneling roadway dust reduction technology, especially a kind of spraying device. BACKGROUND

[0002] In coal mine tunneling operation, the diffusion of coal dust and rock dust poses a serious threat to mine safety production. To suppress dust pollution, the current industry generally uses a spraying system composed of zinc-coated pipes with evenly distributed atomizing nozzles. This atomizing device not only has poor effect, but also easily causes the dust control range to deviate from the working requirements of the roadway. SUMMARY

[0003] The utility model provides a kind of spraying device, to solve the problem of poor atomizing effect of existing atomizing device, which easily causes the dust control range to deviate from the working requirements of the roadway.

[0004] The utility model provides a kind of spraying device, applied to tunneling working face, comprising:

[0005] A wind-water pipeline is formed with a drainage cavity and an exhaust cavity, the wind-water pipeline is formed with a water inlet and a drainage outlet communicating with the drainage cavity, and an exhaust outlet and an air inlet communicating with the exhaust cavity;

[0006] A water spraying assembly is rotatably arranged on the wind-water pipeline and connected with the drainage outlet, the water spraying assembly is provided with a plurality of nozzles, the nozzles are arranged in a ring shape, and each nozzle is arranged outwardly with one side deviated, wherein at least a part of the water mist sprayed by at least one nozzle is opposite to the exhaust outlet, so that the water mist sprayed drives the water spraying assembly to rotate relative to the wind-water pipeline during the process of spraying water mist by the nozzle, and the gas discharged from the exhaust outlet is blown to the water mist sprayed by the nozzle.

[0007] According to the spraying device provided by the utility model, the water spraying assembly comprises:

[0008] A nozzle rotating shaft is rotatably arranged on the wind-water pipeline;

[0009] A plurality of nozzles are connected in a ring shape on the nozzle rotating shaft;

[0010] A multi-way pipe is communicated with the drainage outlet through the nozzle rotating shaft at one end, and is provided with a plurality of branch pipes at the other end, and each branch pipe is communicated with a different nozzle.

[0011] According to the spraying device provided by the utility model, the nozzle is provided with at least three.

[0012] According to the spraying device, the top end of the air-water pipeline is provided with the air outlet, the bottom end of the air-water pipeline is provided with the water outlet, each of the nozzles is arranged upwardly in an inclined manner, and at least part of the water mist sprayed by the nozzles is opposite to the air outlet.

[0013] According to the spraying device, the spraying device further comprises:

[0014] The guide plate is internally formed with a flow guide groove, an inlet of the flow guide groove is opposite to the air outlet, and an outlet of the flow guide groove is opposite to at least part of the water mist sprayed by the nozzle.

[0015] According to the spraying device, the flow guide groove is a ring-shaped flow guide groove, the inlet of the ring-shaped flow guide groove is located on the inner side of the ring, and the outlet of the ring-shaped flow guide groove is located on the outer side of the ring.

[0016] According to the spraying device, a conical wind-shielding column is arranged in the flow guide groove, a small-diameter end of the conical wind-shielding column penetrates through the air outlet and extends into the air outlet cavity, and a large-diameter end of the conical wind-shielding column is connected to the center of the flow guide groove.

[0017] According to the spraying device, the spraying device further comprises:

[0018] The water inlet pipeline is provided with a first adjusting valve, and the water inlet pipeline is communicated with the water inlet.

[0019] According to the spraying device, the spraying device further comprises:

[0020] The air inlet pipeline is provided with a second adjusting valve, and the air inlet pipeline is communicated with the air inlet.

[0021] According to the spraying device, the air outlet cavity is communicated with the water outlet cavity.

[0022] The spraying device provided by the utility model, the water mist sprayed by the nozzle drives the water spraying assembly to rotate relative to the air-water pipeline, and the automation and uniform distribution of spraying are realized. Meanwhile, the water mist sprayed by the nozzle and the gas discharged from the air outlet interact with each other, the gas blows to the water mist, the diffusion range and coverage area of the water mist are enhanced, the atomization effect is improved, dust generated on the tunneling working face can be more effectively captured and settled, and the air quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the internal structure of the spraying device provided by this utility model.

[0025] Figure 2 This is a schematic diagram of the overall structure of the spraying device provided by this utility model.

[0026] Figure 3 This is a schematic diagram of the bottom structure of the spray device provided by this utility model.

[0027] Figure 4 This is a schematic diagram of the spray device provided by this utility model, which includes a first regulating valve and a second regulating valve.

[0028] Figure label:

[0029] 10. Water pipe; 110. Drainage chamber; 120. Exhaust chamber; 130. Water inlet; 140. Drain outlet; 150. Exhaust outlet; 160. Air inlet; 20. Water spray assembly; 210. Nozzle; 220. Nozzle shaft; 230. Multi-port pipe; 30. Guide plate; 310. Flow guide groove; 320. Conical windbreak column; 40. Water inlet pipe; 50. Air inlet pipe; 60. First regulating valve; 70. Second regulating valve. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] The following is combined with Figures 1-4 This invention describes a spraying device that is primarily suitable for the entire cross-section of a tunneling face.

[0032] In some embodiments, such as Figures 1 to 3As shown, the spray device is applied to the tunneling face, including a wind-water pipeline 10 and a water spraying assembly 20. The wind-water pipeline 10 is formed with a water discharge cavity 110 and an air discharge cavity 120, and the wind-water pipeline 10 is formed with a water inlet 130 and a water outlet 140 communicating with the water discharge cavity 110, and an air outlet 150 and an air inlet 160 communicating with the air discharge cavity 120; the water spraying assembly 20 is rotatably arranged on the wind-water pipeline 10 and connected with the water outlet 140, and the water spraying assembly 20 is provided with a plurality of nozzles 210 arranged in a ring shape, and each nozzle 210 is arranged outwardly deviated to one side, and at least a part of the water mist sprayed by at least one nozzle 210 is opposite to the air outlet 150, so that in the process of spraying water mist by the nozzle 210, the water mist drives the water spraying assembly 20 to rotate relative to the wind-water pipeline 10, and the gas discharged from the air outlet 150 blows to the water mist sprayed by the nozzle 210.

[0033] In this embodiment, the wind-water pipeline 10 is formed with a water discharge cavity 110 and an air discharge cavity 120 inside for conveying water and gas respectively. The water inlet 130 and the water outlet 140 communicate with the water discharge cavity 110 for water inlet and outlet; the air inlet 160 and the air outlet 150 communicate with the air discharge cavity 120 for gas inlet and outlet.

[0034] In the tunneling face, the main purpose of the spray device is to reduce dust pollution to the working environment by spraying water to reduce dust, and to improve the level of safety production.

[0035] In the working process, water enters the water discharge cavity 110 through the water inlet 130 of the wind-water pipeline 10, and then flows to the water outlet 140. Gas (usually compressed air) enters the air discharge cavity 120 through the air inlet 160, and then flows to the air outlet 150.

[0036] When the nozzle 210 of the water spraying assembly 20 starts to spray water mist, the spraying of the water mist will generate a reaction force. This reaction force drives the water spraying assembly 20 to rotate relative to the wind-water pipeline 10. The nozzles 210 are arranged in a ring shape, and each nozzle 210 is arranged outwardly deviated to one side, which makes the direction of the sprayed water mist consistent, further enhancing the rotation effect.

[0037] The gas (usually compressed air) discharged from the air outlet 150 blows to the water mist sprayed by the nozzle 210. The role of the gas is to enhance the diffusion range and speed of the water mist, so that the water mist can more uniformly cover the tunneling face. After the water mist contacts the dust generated in the tunneling process, the dust is removed by wetting, condensation and precipitation.

[0038] The water mist sprayed by the nozzle 210 drives the water spraying assembly 20 to rotate relative to the air-water pipeline 10, and automation and uniform distribution of the water mist are realized. Meanwhile, the water mist sprayed by the nozzle 210 interacts with the gas discharged from the air outlet 150, the gas blows to the water mist, the diffusion range and the coverage area of the water mist are enhanced, the atomization effect is improved, the dust generated in the tunneling working face can be more effectively captured and settled, and the air quality is improved.

[0039] In some embodiments, as shown in Figures 1 to 3 The water spraying assembly 20 comprises a nozzle rotating shaft 220, a plurality of nozzles 210 and a multi-way pipe 230. The nozzle rotating shaft 220 is rotatably arranged on the air-water pipeline 10; the plurality of nozzles 210 are annularly connected to the nozzle rotating shaft 220; one end of the multi-way pipe 230 penetrates through the nozzle rotating shaft 220 and is communicated with the water outlet 140, and the other end is provided with a plurality of branch pipes, and each branch pipe is communicated with a different nozzle 210.

[0040] Specifically, the nozzle rotating shaft 220 is rotatably arranged on the air-water pipeline 10. The plurality of nozzles 210 are annularly connected to the nozzle rotating shaft 220, so that the water mist can uniformly cover the tunneling working face. When the water enters the nozzle 210 through the multi-way pipe 230, the nozzle 210 starts to spray the water mist. The spraying of the water mist generates a reaction force to drive the nozzle rotating shaft 220 to rotate. The rotation of the nozzle rotating shaft 220 makes the nozzle 210 continuously change the spraying direction, further expanding the coverage range of the water mist.

[0041] In the embodiment, one end of the multi-way pipe 230 is communicated with the water outlet 140, and the other end is provided with a plurality of branch pipes, and each branch pipe is communicated with a different nozzle 210. Therefore, the multi-way pipe 230 can ensure that each nozzle 210 can obtain uniform water supply, so as to ensure that the spraying effect of the water mist is consistent.

[0042] Generally, at least three nozzles 210 are arranged, and the three nozzles 210 are annularly connected to the nozzle rotating shaft 220. This can ensure that the water mist can uniformly cover the tunneling working face. The annular arrangement of the nozzles 210 makes the sprayed water mist form a complete coverage area, and enhances the dust falling effect.

[0043] In some embodiments, as shown in Figures 1 to 3 The top end of the air-water pipeline 10 is provided with an air outlet 150, the bottom end of the air-water pipeline 10 is provided with a water outlet 140, and each nozzle 210 is arranged to be inclined upward, and at least part of the water mist sprayed by the nozzle 210 is opposite to the air outlet 150.

[0044] The gas outlet 150 is arranged at the top end of the air-water pipeline 10, facilitating the discharge of the gas (usually compressed air). The discharged gas directly blows against the water mist sprayed by the nozzle 210, enhancing the diffusion range and speed of the water mist. The water outlet 140 is arranged at the bottom end of the air-water pipeline 10, facilitating the discharge of water. The water enters the water spraying assembly 20 through the water outlet 140, ensuring that the nozzle 210 can uniformly supply water.

[0045] The nozzle 210 is arranged in an upward inclination, so that the direction of the sprayed water mist is opposite to the direction of the gas discharged by the gas outlet 150. This design ensures that the gas can directly act on the water mist, enhancing the diffusion effect of the water mist.

[0046] The inclination angle of the nozzle 210 can be adjusted as needed, so that the sprayed water mist can cover the full section of the tunneling working face, while fully interacting with the gas discharged by the gas outlet 150.

[0047] The spray device of the utility model further improves the automation and uniform distribution effect of the spray by optimizing the positions of the gas outlet 150 and the water outlet 140 of the air-water pipeline 10 and the inclined arrangement of the nozzle 210. The water mist sprayed by the nozzle 210 interacts with the gas discharged by the gas outlet 150, enhancing the diffusion range and coverage area of the water mist, significantly improving the dust suppression effect, improving the air quality of the tunneling working face, and improving the safety production level.

[0048] In some embodiments, as shown in FIG. 3, Figures 1 to 3 The spray device further includes a guide plate 30 having a flow guide groove 310 formed therein. The inlet of the flow guide groove 310 is opposite to the gas outlet 150, and the outlet of the flow guide groove 310 is opposite to at least part of the water mist sprayed by the nozzle 210. The flow guide groove 310 guides the gas discharged by the gas outlet 150 to flow towards the water mist sprayed by the nozzle 210. Through the guidance of the flow guide groove 310, the gas can more uniformly blow towards the water mist, enhancing the diffusion range and speed of the water mist.

[0049] In this embodiment, the guide plate 30 is usually installed near the gas outlet 150 of the air-water pipeline 10, ensuring that the inlet of the flow guide groove 310 is aligned with the gas outlet 150. The flow guide groove 310 is usually designed in an arc shape or a conical shape, to ensure that the gas can smoothly flow towards the water mist sprayed by the nozzle 210.

[0050] During operation, the gas enters the flow guide groove 310 through the gas outlet 150, and the flow guide groove 310 guides the gas to flow towards the water mist sprayed by the nozzle 210. The gas blows against the water mist, enhancing the diffusion range and speed of the water mist. The water mist sprayed by the nozzle 210 interacts with the gas guided by the flow guide groove 310, and the action of the gas enables the water mist to more uniformly cover the tunneling working face.

[0051] Generally, the flow guide groove 310 is a ring-shaped flow guide groove 310, the inlet of the ring-shaped flow guide groove 310 is located on the inner side of the ring, and the outlet of the ring-shaped flow guide groove 310 is located on the outer side of the ring. The gas (usually compressed air) enters the inlet of the ring-shaped flow guide groove 310 through the exhaust port 150. The gas blows towards the water mist sprayed by the nozzle 210 through the outlet of the flow guide groove 310. The design of the ring-shaped flow guide groove 310 enables the gas to be uniformly distributed and blown towards the water mist sprayed by the nozzle 210. The guidance of the gas through the flow guide groove 310 forms a ring-shaped gas flow, ensuring that the water mist sprayed by each nozzle 210 can be blown by the gas, enhancing the diffusion range and speed of the water mist.

[0052] The spray device of the utility model further optimizes the way in which the gas flows towards the water mist sprayed by the nozzle 210 by adopting the ring-shaped flow guide groove 310. The ring-shaped flow guide groove 310 ensures that the gas can be uniformly distributed and blown towards the water mist sprayed by the nozzle 210, enhances the diffusion range and coverage area of the water mist, significantly improves the dust-settling effect, improves the air quality of the tunneling working face, and improves the safety production level.

[0053] Further, the flow guide groove 310 is provided with a conical wind-blocking column 320, the small-diameter end of the conical wind-blocking column 320 penetrates through the exhaust port 150 and extends into the exhaust cavity 120, and the large-diameter end of the conical wind-blocking column 320 is connected to the center of the flow guide groove 310. The conical wind-blocking column 320 guides the gas discharged from the exhaust port 150 to flow towards the outlet of the flow guide groove 310, ensuring that the gas can be uniformly blown towards the water mist sprayed by the nozzle 210.

[0054] During the blowing process, the gas enters the flow guide groove 310 through the exhaust port 150, and the conical wind-blocking column 320 guides the gas to flow towards the outlet of the flow guide groove 310. When the gas flows in the flow guide groove 310, the shape of the conical wind-blocking column 320 makes the gas flow more smoothly, reducing vortex and turbulence. The water mist sprayed by the nozzle 210 interacts with the gas guided by the conical wind-blocking column 320, the gas blows towards the water mist, enhancing the diffusion range and speed of the water mist.

[0055] In some embodiments, as shown in Figure 4 The spray device further comprises a water inlet pipeline 40 provided with a first adjusting valve 60, and the water inlet pipeline 40 is in communication with the water inlet 130.

[0056] In this embodiment, the first adjusting valve 60 is used to adjust the flow of water in the water inlet pipeline 40, ensuring that the nozzle 210 can obtain an appropriate amount of water supply, and ensuring that the water mist sprayed by the nozzle 210 has a suitable atomization effect.

[0057] According to actual needs, the first adjusting valve 60 can be a manual adjusting valve, an electric adjusting valve, a pneumatic adjusting valve or a proportional adjusting valve.

[0058] The manual regulating valve adjusts the position of the valve stem by manually rotating the hand wheel, thereby controlling the flow and pressure of water in the water inlet pipe 40. It is simple in structure and low in cost, suitable for scenarios with low automation requirements.

[0059] The electric regulating valve receives external control signals through the electric actuator, automatically adjusts the position of the valve core in the valve body, and controls the flow and pressure of water. Remote control and automatic adjustment can be realized, suitable for scenarios requiring precise control.

[0060] The pneumatic regulating valve receives compressed air signals through the pneumatic actuator, adjusts the position of the valve core in the valve body, and controls the flow and pressure of water. It has fast response speed and is suitable for use in environments without stable power supply.

[0061] The proportional regulating valve realizes precise flow regulation through proportional control, suitable for scenarios requiring high-precision control. It has high regulation accuracy and can realize continuous regulation.

[0062] In some embodiments, as shown in Figure 4 The spray device further comprises an air inlet pipe 50 provided with a second regulating valve 70, and the air inlet pipe 50 is in communication with the air inlet 160.

[0063] The second regulating valve 70 is used to adjust the flow of gas in the air inlet pipe 50, to ensure that the air outlet 150 can discharge an appropriate amount of gas. By adjusting the pressure of the gas through the regulating valve, it is ensured that the gas can effectively blow the water mist sprayed by the nozzle 210, enhancing the diffusion range and speed of the water mist.

[0064] According to actual needs, the second regulating valve 70 can be a manual regulating valve, an electric regulating valve, a pneumatic regulating valve, a proportional regulating valve, or a pressure reducing valve.

[0065] The manual regulating valve adjusts the position of the valve stem by manually rotating the hand wheel, thereby controlling the flow and pressure of gas in the air inlet pipe 50. It is simple in structure and low in cost, suitable for scenarios with low automation requirements.

[0066] The electric regulating valve receives external control signals through the electric actuator, automatically adjusts the position of the valve core in the valve body, and controls the flow and pressure of gas. Remote control and automatic adjustment can be realized, suitable for scenarios requiring precise control.

[0067] The pneumatic regulating valve receives compressed air signals through the pneumatic actuator, adjusts the position of the valve core in the valve body, and controls the flow and pressure of water. It has fast response speed and is suitable for use in environments without stable power supply.

[0068] The proportional regulating valve realizes precise flow regulation through proportional control, suitable for scenarios requiring high-precision control. It has high regulation accuracy and can realize continuous regulation.

[0069] The pressure reducing valve adjusts the position of the valve core by the elastic force of the spring, reduces the gas pressure, and ensures that the gas is output at a stable low pressure.

[0070] Based on the above embodiments, in some embodiments, as Figures 1 to 3 As shown in the figure, the pressure of the drainage cavity 110 is increased, and the exhaust cavity 120 is also communicated with the drainage cavity 110.

[0071] In this embodiment, the exhaust cavity 120 and the drainage cavity 110 are connected by a communication pipeline. One end of the communication pipeline is communicated with the exhaust cavity 120, and the other end is communicated with the drainage cavity 110. The gas (usually compressed air) in the exhaust cavity 120 enters the drainage cavity 110 through the communication pipeline, increasing the pressure in the drainage cavity 110. The increased pressure enables the water in the drainage cavity 110 to flow to the nozzle 210 at a higher pressure, thereby enhancing the effect of the nozzle 210 spraying water mist.

[0072] A third regulating valve can be arranged in the communication pipeline to control the flow and pressure of the gas entering the drainage cavity 110. In order to prevent impurities in the gas from entering the drainage cavity 110, a filter can be arranged in the communication pipeline.

[0073] The spray device of the utility model further optimizes the performance of the spray device by communicating the exhaust cavity 120 with the drainage cavity 110. The gas in the exhaust cavity 120 enters the drainage cavity 110 through the communication pipeline, increasing the pressure in the drainage cavity 110, thereby improving the effect of the nozzle 210 spraying water mist. Through the precise control of the third regulating valve, the spray device can realize the optimal adjustment of the flow and pressure of the water, ensuring that the water mist sprayed by the nozzle 210 has a suitable atomization effect, thereby more effectively capturing and settling the dust generated on the tunneling working face, improving air quality, and improving the level of safety production.

[0074] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A spraying device, characterized in that, Applied to tunneling faces, including: A feng shui pipe has a drainage chamber and an exhaust chamber inside. The feng shui pipe has a water inlet and a drain outlet connected to the drainage chamber, and an exhaust outlet and an air inlet connected to the exhaust chamber. A water spray assembly is rotatably mounted on the air duct and connected to the drain outlet. The water spray assembly has multiple nozzles arranged in a ring, and each nozzle is offset to one side facing outward. At least a portion of the water mist sprayed by at least one of the nozzles is opposite to the exhaust port, so that during the spraying of water mist by the nozzle, the sprayed water mist drives the water spray assembly to rotate relative to the air duct and causes the gas discharged from the exhaust port to blow towards the water mist sprayed by the nozzle.

2. The spraying device according to claim 1, characterized in that, The water spray assembly includes: The nozzle shaft is rotatably mounted on the air duct; Multiple nozzles are connected in a ring on the nozzle shaft; The multi-port pipe has one end passing through the nozzle shaft and connected to the drain outlet, and the other end is provided with multiple branch pipes, each of which is connected to a different nozzle.

3. The spraying device according to claim 2, characterized in that, The nozzle has at least three.

4. The spraying device according to claim 2, characterized in that, The top end of the feng shui pipe is provided with the exhaust port, and the bottom end of the feng shui pipe is provided with the drain port. Each nozzle is inclined upward, and at least a portion of the water mist sprayed by the nozzle is opposite to the exhaust port.

5. The spraying device according to claim 1, characterized in that, The spraying device also includes: The guide plate has a flow channel formed inside it, the inlet of the flow channel is opposite to the exhaust port, and the outlet of the flow channel is opposite to at least a portion of the water mist sprayed by the nozzle.

6. The spraying device according to claim 5, characterized in that, The flow channel is an annular flow channel, with the inlet of the annular flow channel located on the inner side of the annulus and the outlet of the annular flow channel located on the outer side of the annulus.

7. The spraying device according to claim 6, characterized in that, The guide channel is provided with a conical wind baffle column. The small-diameter end of the conical wind baffle column passes through the exhaust port and extends into the exhaust chamber. The large-diameter end of the conical wind baffle column is connected to the center of the guide channel.

8. The spraying device according to any one of claims 1-7, characterized in that, The spraying device also includes: The water inlet pipe is equipped with a first regulating valve, and the water inlet pipe is connected to the water inlet.

9. The spraying device according to any one of claims 1-7, characterized in that, The spraying device also includes: The air intake pipe is equipped with a second regulating valve, and the air intake pipe is connected to the air intake port.

10. The spraying device according to any one of claims 1-7, characterized in that, The exhaust chamber is connected to the drainage chamber.

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