Energy-saving automatic following spraying device for belt conveyor

Abstract

The utility model belongs to the technical field of dust falling of belt conveyors, and discloses an energy-saving automatic following spraying device for a belt conveyor. The spraying device comprises a belt conveyor, a water supply pipeline, a water mist nozzle, a first hydraulic control valve, a driving wheel and an oil pump. The water supply pipeline is connected with the spray nozzle, the water inlet end and the water outlet end of the first hydraulic control valve are connected to the water supply pipeline, and hydraulic oil triggers the hydraulic control end of the first hydraulic control valve so that the water inlet end and the water outlet end of the first hydraulic control valve can be connected or disconnected. The driving wheel is in power connection with a driving shaft of the oil pump, the rim of the driving wheel makes contact with a rubber belt of the belt conveyor, the liquid inlet end of the oil pump is connected with an oil tank through a first hydraulic pipeline, and the liquid outlet end of the oil pump is connected with the hydraulic control end of the first hydraulic control valve through a second hydraulic pipeline. The spraying operation is synchronously started and stopped according to the belt conveyor, a complex electric control system, a signal acquisition device and an independent power system are omitted, and the working reliability and stability of the spraying device are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust reduction of belt conveyors, and particularly relates to an energy-saving automatic following spray device for belt conveyors. Background Art

[0002] Belt conveyor is a continuous conveying machine that uses a flexible conveyor belt as a material carrying and traction component. An endless conveyor belt surrounds the driving roller and the redirecting roller. The upper and lower belts between the two rollers are supported by several rollers. The material is placed on the upper belt, and the friction between the driving roller and the belt is used to drag the conveyor belt and the material. Belt conveyors are widely used due to their high reliability, high safety and low cost.

[0003] At present, the control device used for controlling the water spraying of belt conveyors is mainly electronic control, which is mainly composed of various probes and electromagnetic valves. The probe detects whether the conveyor belt is running with materials, and the detection signal is sent to the control box, which controls the valve switch. Electronic control devices are prone to malfunction in working environments with high dust and moisture, and are also prone to unsafe hidden dangers when used in flammable and explosive places such as underground coal mines. In addition, the complex electronic control system, signal acquisition device and separate power system have high investment costs and poor mobility.

[0004] Based on this, it is urgent to propose a new type of spray device to solve the above technical problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide an energy-saving automatic following spray device for a belt conveyor, which replaces electrical control and realizes synchronous start and stop of the spray device and the conveyor belt.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An energy-saving automatic follow-up spray device for a belt conveyor comprises a belt conveyor, a water supply pipeline, a water mist nozzle, a first hydraulic control valve, a driving wheel and an oil pump;

[0008] The water supply pipeline is connected to the water mist nozzle;

[0009] The water inlet and outlet of the first hydraulic control valve are respectively connected to the water supply pipeline;

[0010] The hydraulic oil triggers the hydraulic control end of the first hydraulic control valve to connect or cut off the water inlet and outlet of the first hydraulic control valve;

[0011] The driving wheel is dynamically connected to the driving shaft of the oil pump, and the rim of the driving wheel contacts the belt of the belt conveyor;

[0012] The fluid inlet end of the oil pump is connected to the oil tank via a first hydraulic pipeline, and the fluid outlet end of the oil pump is connected to the fluid control end of the first hydraulic control valve via a second hydraulic pipeline.

[0013] Preferably, the rim of the driving wheel contacts the lower belt of the belt conveyor.

[0014] Preferably, the energy-saving automatic following spray device for the belt conveyor also includes an air supply pipeline, which is connected to the water mist nozzle.

[0015] Preferably, a second hydraulically controlled valve is provided on the gas supply pipeline;

[0016] The air inlet and outlet of the second hydraulic control valve are respectively connected to the air supply pipeline;

[0017] The hydraulic oil triggers the hydraulic control end of the second hydraulic control valve to connect or cut off the air inlet and air outlet of the second hydraulic control valve;

[0018] The liquid outlet end of the oil pump is connected to the liquid control end of the second liquid control valve via a second hydraulic pipeline.

[0019] Preferably, an overflow valve is provided on the second hydraulic pipeline.

[0020] Preferably, the driving wheel is connected to the driving shaft of the oil pump via a transmission shaft.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] As described above, the utility model provides an energy-saving automatic follow-up spray device for a belt conveyor, which adopts a driving wheel, an oil pump, a hydraulic control valve and other structures to realize the start and stop spray operation according to the start and stop of the belt conveyor, eliminating the complex electronic control system, signal acquisition device and a separate power system, ensuring the reliability and stability of the spray device, while reducing the cost. In addition, the spray device of the utility model can use the existing water and gas circuits at the equipment site, and the start and stop operation of the spray device is simple and convenient, which is also more convenient for changing the work site. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0024] Figure 1 This is a diagram of the use status of the energy-saving automatic follow-up spray device for the belt conveyor in Example 1 of the utility model when a water supply pipeline is independently provided.

[0025] Figure 2 This is a usage status diagram of the energy-saving automatic follow-up spray device for the belt conveyor in Example 2 of the utility model when both the water supply pipeline and the air supply pipeline are provided.

[0026] Among them, 1-belt conveyor, 21-water supply pipeline, 22-air supply pipeline, 3-water mist nozzle, 41-first hydraulic control valve, 42-second hydraulic control valve, 5-driving wheel, 6-oil pump, 71-first hydraulic pipeline, 72-second hydraulic pipeline, 8-oil tank, 9-belt conveyor lower belt, 10-overflow valve. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Example 1 and Example 2 describe an energy-saving automatic follow-up spray device for a belt conveyor, which can be started and stopped synchronously with the start and stop of the belt conveyor in two usage states: a water supply pipeline alone and a water supply pipeline and an air supply pipeline at the same time. No matching electronic control device and power source are required, so as to replace electrical control to achieve synchronous start and stop of the spray device and the conveyor belt.

[0034] Embodiment 1:

[0035] like Figure 1 As shown, the energy-saving automatic following spray device for the belt conveyor in this embodiment includes a belt conveyor 1, a water supply pipeline 21, a water mist nozzle 3, a first hydraulic control valve 41, a driving wheel 5 and an oil pump 6.

[0036] The water supply pipeline 21 is connected to the water mist nozzle 3 .

[0037] The water inlet and outlet of the first hydraulic control valve 41 are respectively connected to the water supply pipeline 21. When the water inlet and outlet of the first hydraulic control valve 41 are connected, water flows through the water supply pipeline 21 to reach the water mist nozzle 3. When the water inlet and outlet of the first hydraulic control valve 41 are cut off, the water mist nozzle 3 and the water supply pipeline 21 are disconnected, and the water flow cannot reach the water mist nozzle 3.

[0038] The fluid inlet end of the oil pump 6 is connected to the oil tank 8 via a first hydraulic pipeline 71 , and the fluid outlet end of the oil pump 6 is connected to the fluid control end of the first hydraulic control valve 41 via a second hydraulic pipeline 72 .

[0039] The hydraulic oil triggers the hydraulic control end of the first hydraulic control valve 41 to connect or cut off the water inlet and outlet of the first hydraulic control valve 41 .

[0040] When the oil pump 6 is working, the hydraulic oil in the oil tank 8 is pumped into the hydraulic end of the first hydraulic control valve 41 through the first hydraulic pipeline 71 and the second hydraulic pipeline 72 in turn, triggering the valve core of the first hydraulic control valve 41 to move, so that the water inlet and water outlet of the first hydraulic control valve 41 are connected. When the oil pump 6 stops working, the valve core of the first hydraulic control valve 41 returns to the middle position, so that the water inlet and water outlet of the first hydraulic control valve 41 are cut off. The driving wheel 5 is connected to the driving shaft of the oil pump 6 via the transmission shaft. When the driving wheel 5 rotates, the transmission shaft drives the driving shaft of the oil pump 6 to rotate, thereby driving the oil pump 6 to work. When the driving wheel 5 stops rotating, the driving shaft of the oil pump 6 connected to the driving wheel 5 stops rotating, and the oil pump 6 loses power and stops working.

[0041] The wheel rim of the driving wheel 5 contacts the lower belt 9 of the belt conveyor. When the belt conveyor 1 is started, the belt of the belt conveyor 1 starts to rotate, and the driving wheel 5 rotates by friction with the lower belt 9 of the belt conveyor. When the belt conveyor 1 is stopped, the belt of the belt conveyor 1 stops rotating, and the lower belt 9 of the belt conveyor no longer drives the driving wheel 5 by friction, and the driving wheel 5 stops rotating.

[0042] In this embodiment, when the energy-saving automatic follow-up spray device for the belt conveyor is provided with a separate water supply pipeline, the specific process of realizing synchronous start and stop with the conveyor belt is as follows:

[0043] When the belt conveyor 1 is started, the belt of the belt conveyor 1 starts to rotate, and the driving wheel 5 rotates by friction with the lower belt 9 of the belt conveyor. The driving wheel 5 is connected to the driving shaft of the oil pump 6 through the transmission shaft, thereby driving the oil pump 6 to work. Driven by the driving wheel 5, the oil pump 6 pumps the hydraulic oil in the oil tank 8 into the hydraulic control end of the first hydraulic control valve 41 through the first hydraulic pipeline 71 and the second hydraulic pipeline 72 in sequence, triggering the first hydraulic control valve 41 to be connected, so that the water inlet and outlet ends of the first hydraulic control valve 41 are connected. The water mist nozzle 3 is connected to the water supply pipeline 21 through the first hydraulic control valve 41, and the water flows through the water supply pipeline 21 to reach the water mist nozzle 3, and the water mist nozzle 3 starts to spray.

[0044] When the belt conveyor 1 stops, the belt of the belt conveyor 1 stops rotating, the lower belt 9 of the belt conveyor no longer drives the driving wheel 5 by friction, the driving wheel 5 stops rotating, the driving shaft of the oil pump 6 connected to the driving wheel 5 stops rotating, the oil pump 6 loses power and stops working, the first hydraulic control valve 41 returns to the middle position, and the water inlet and outlet of the first hydraulic control valve 41 are cut off. The water mist nozzle 3 and the water supply pipeline 21 are disconnected, and no water flows through the water supply pipeline 21 between the outlet of the first hydraulic control valve 41 and the water mist nozzle 3, and the water mist nozzle 3 stops spraying.

[0045] In this embodiment, the energy-saving automatic follow-up spray device for the belt conveyor and the synchronous start and stop of the conveyor belt do not require a matching electronic control device and a power source, thereby ensuring the reliability and stability of the spray device.

[0046] In addition, in order to maintain the system pressure stable and more secure, the energy-saving automatic follow-up spray device for the belt conveyor of this embodiment is also provided with a relief valve 10, the liquid inlet end of the relief valve 10 is connected to the second hydraulic pipeline 72, and the liquid outlet end of the relief valve 10 is connected to the oil tank 6. When the system pressure is too high, the excess hydraulic oil flows back to the oil tank 6 through the relief valve 10, so that the pressure in the second hydraulic pipeline 72 is stabilized within the set value range.

[0047] Embodiment 2:

[0048] like Figure 2 As shown, in this embodiment, the energy-saving automatic following spray device for the belt conveyor is provided with an air supply pipeline 22 and a second hydraulic control valve 42 on the basis of the embodiment 1.

[0049] The water mist nozzle 3 is connected to a water supply pipeline 21 and an air supply pipeline 22 at the same time.

[0050] A second hydraulically controlled valve 42 is provided on the gas supply pipeline 22 .

[0051] The air inlet and outlet ends of the second hydraulic control valve 42 are connected to the air supply pipeline 22 respectively.

[0052] When the air inlet and air outlet of the second hydraulic control valve 42 are connected, the air flows through the air supply pipeline 22 to reach the water mist nozzle 3. When the air inlet and air outlet of the second hydraulic control valve 42 are closed, the water mist nozzle 3 and the air supply pipeline 22 are disconnected.

[0053] The hydraulic oil triggers the hydraulic control end of the second hydraulic control valve 42 to connect or cut off the air inlet and outlet of the second hydraulic control valve.

[0054] The liquid outlet end of the oil pump 6 is connected to the liquid control end of the second liquid control valve 42 via the second hydraulic pipeline 72 .

[0055] When the oil pump 6 is working, the hydraulic oil in the oil tank 8 is pumped into the hydraulic end of the second hydraulic control valve 42 through the first hydraulic pipeline 71 and the second hydraulic pipeline 72 in sequence, triggering the valve core of the second hydraulic control valve 42 to move, so that the air inlet and the air outlet of the second hydraulic control valve 42 are connected. When the oil pump 6 stops working, the valve core of the second hydraulic control valve 42 returns to the middle position, so that the air inlet and the air outlet of the second hydraulic control valve 42 are cut off.

[0056] In this embodiment, when the energy-saving automatic follow-up spray device for the belt conveyor is provided with a water supply pipeline and an air supply pipeline at the same time, the specific process of realizing synchronous start and stop with the conveyor belt is as follows:

[0057] When the belt conveyor 1 is started, the oil pump 6, driven by the driving wheel 5, pumps the hydraulic oil in the oil tank 8 into the hydraulic end of the first hydraulic control valve 41 and the hydraulic end of the second control valve 42 through the first hydraulic pipeline 71 and the second hydraulic pipeline 72 in sequence, triggering the first hydraulic control valve 41 to be connected, so that the water inlet and the water outlet of the first hydraulic control valve 41 are connected, and at the same time triggering the second hydraulic control valve 42 to be connected, so that the air inlet and the air outlet of the second hydraulic control valve 42 are connected. The water mist nozzle 3 is connected to the water supply pipeline 21 through the first hydraulic control valve 41, and the water mist nozzle 3 is connected to the air supply pipeline 22 through the second hydraulic control valve 42. The water flows through the water supply pipeline 21 and the air flows through the air supply pipeline 22 to reach the water mist nozzle 3, and the water mist nozzle 3 starts to spray.

[0058] When the belt conveyor 1 stops, the driving wheel 5 stops rotating, the oil pump 6 stops working because of power loss, and the first hydraulic control valve 41 and the second hydraulic control valve 42 return to the middle position, so that the water inlet and the water outlet of the first hydraulic control valve 41 are cut off, and the air inlet and the air outlet of the second hydraulic control valve 42 are cut off. The water mist nozzle 3 is disconnected from the water supply pipeline 21 and the air supply pipeline 22 at the same time, and no water flows through the water supply pipeline 21 between the water outlet of the first hydraulic control valve 41 and the water mist nozzle 3, and no air flows through the air supply pipeline 22 between the air outlet of the second hydraulic control valve 42 and the water mist nozzle 3, and the water mist nozzle 3 stops spraying.

[0059] The additional air supply pipeline 22 and the second hydraulic control valve 42 control the air flow to disperse the water mist, so that the water mist sprayed by the water mist nozzle 3 has a wider range and has a better dust reduction effect compared with Example 1.

[0060] So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the energy-saving automatic follow-up spray device for belt conveyors of the utility model. Of course, the above is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model and should be protected by the utility model.

Claims

1. An energy-saving automatic follow-up spray device for a belt conveyor, comprising a belt conveyor, a water supply pipeline, a water mist nozzle, a first hydraulic control valve, a driving wheel and an oil pump; characterized in that: The water supply pipeline is connected to the water mist nozzle; The water inlet and outlet of the first hydraulic control valve are respectively connected to the water supply pipeline; The hydraulic oil triggers the hydraulic control end of the first hydraulic control valve to connect or cut off the water inlet and outlet of the first hydraulic control valve; The driving wheel is dynamically connected to the driving shaft of the oil pump, and the rim of the driving wheel is in contact with the belt of the belt conveyor; The fluid inlet end of the oil pump is connected to the oil tank via a first hydraulic pipeline, and the fluid outlet end of the oil pump is connected to the fluid control end of the first fluid control valve via a second hydraulic pipeline.

2. The energy-saving automatic following spray device for belt conveyor according to claim 1 is characterized in that: The wheel rim of the driving wheel contacts the lower belt of the belt conveyor.

3. The energy-saving automatic following spray device for belt conveyor according to claim 1 is characterized in that: The energy-saving automatic following spray device for the belt conveyor also includes an air supply pipeline, and the air supply pipeline is connected to the water mist nozzle.

4. The energy-saving automatic following spray device for belt conveyor according to claim 3 is characterized in that: A second hydraulically controlled valve is provided on the gas supply pipeline; The air inlet and outlet of the second hydraulic control valve are respectively connected to the air supply pipeline; The hydraulic oil triggers the hydraulic control end of the second hydraulic control valve to connect or cut off the air inlet and air outlet of the second hydraulic control valve; The liquid outlet end of the oil pump is connected to the liquid control end of the second liquid control valve via a second hydraulic pipeline.

5. The energy-saving automatic following spray device for belt conveyor according to claim 1, characterized in that: The second hydraulic pipeline is provided with an overflow valve.

6. The energy-saving automatic following spray device for belt conveyor according to claim 1, characterized in that: The driving wheel is connected to the driving shaft of the oil pump via a transmission shaft.

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