Raw material yard chute device and its dust control method

Abstract

A raw material yard chute device includes a vehicle body with wheels, a chute frame mounted on the vehicle body, a guardrail fixed to the top of the chute frame, and at least one chute pipe on the chute frame. The chute pipe includes multiple chute units connected in series, each chute unit being vertically open. Each chute unit has a movable sidewall, which is a flap, and all flaps are in the same direction along the chute pipe. An electric push rod is mounted on the chute pipe, with its fixed end fixed to the chute pipe and its movable end fixed to a rocker arm. Beneficial effects: Compared to existing technologies, this invention, with its flap, can control the height of the chute outlet from the material surface to be very low, resulting in less dust and better environmental purification.

Description

Technical Field

[0001] This invention belongs to the field of raw material yard environmental management technology, specifically relating to a raw material yard chute device and its dust control method. Background Technology

[0002] Enclosed raw material yards often have poor ventilation, generating dust during material stockpiling operations. Dust frequently permeates the yard, sometimes even disrupting normal production. High dust concentrations and harsh working conditions threaten the health of workers. Previous dust control technologies have been ineffective in eliminating the large amounts of dust generated during stockpiling, proving less than ideal.

[0003] If spray pipe networks and mist cannons are installed in the material yard, the dust suppression facilities are not very effective because the area of ​​the material yard is large and the dust generation points are not fixed. At the same time, the dust suppression process will also cause high air humidity and serious water accumulation on the ground in the material yard. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to design a raw material yard chute device to reduce dust and purify the environment when starting material stockpiling operations.

[0005] The specific plan is as follows:

[0006] A raw material yard chute device includes a vehicle body with wheels, a chute frame on the vehicle body, a guardrail fixed to the top of the chute frame, at least one chute pipe on the chute frame, the chute pipe including multiple chute units connected in series, the chute units being open from top to bottom, each chute unit having a movable side wall, which is a flap, all flaps being in the same direction on the chute pipe; an electric push rod is provided on the chute pipe, the fixed end of the electric push rod is fixed to the chute pipe, the movable end of the electric push rod is fixed to a rocker arm, the end of the rocker arm is fixed to a rotating shaft, the rotating shaft is rotatably connected to a rotating shaft seat, the rotating shaft seat is fixed to the chute pipe, and the flap is fixed to the rotating shaft.

[0007] A limit switch is fixed on the outer wall of the lower end of the chute pipe. The limit switch is electrically connected to the PLC, and the PLC is electrically connected to the electric push rod.

[0008] A nozzle is fixed to the inner surface of the top corner of the flap. The nozzle is connected to a water pump on the water tank through a pipe. The water tank is fixed to the vehicle body. The PLC is electrically connected to the water pump.

[0009] The chute frame is equipped with two chute pipes, and the flaps of the chute pipes are located on the left and right sides of the chute frame, respectively.

[0010] A dust control method utilizes the aforementioned raw material yard chute device. Upstream material feeds material into the inlet of one or two chute pipes, which flow vertically downwards to the first stockpile area. As material increases in the first stockpile area, it gradually encounters the limit switch of the lowest chute pipe. The limit switch notifies the PLC, which retracts an electric push rod, pulling a rocker arm to rotate. The rotating shaft and flap rotate synchronously, flipping the flap onto the opposite side wall. The electric push rod stops, and the flap becomes a sealing plate, its original position forming a lateral discharge port. Material then flows from the lateral discharge port of the chute pipe to the second stockpile area. This process continues, with the lateral discharge ports of the upper chute units opening sequentially.

[0011] During the above process, only when a certain chute unit becomes the adjacent chute unit above the side discharge port will its nozzles spray water to suppress dust. When the flap of that chute unit becomes the sealing plate, the nozzles will close.

[0012] Beneficial effects: Compared with the prior art, the present invention is equipped with a flap, which can control the height of the chute outlet to the material surface to be very low, resulting in less dust and better environmental purification. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the side closure of the chute unit.

[0015] Figure 3 This is a schematic diagram showing the side of the chute unit open.

[0016] Figure 4 This is a schematic diagram of the flip plate of the chute unit.

[0017] Figure 5 for Figure 4 The intention to enlarge the lower middle section.

[0018] Figure 6 Schematic diagram of the usage status of the invention Figure 1 .

[0019] Figure 7 Schematic diagram of the usage status of the invention Figure 2 . Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings.

[0021] like Figure 1A raw material yard chute device includes a vehicle body 10, the vehicle body 10 includes wheels 11, a chute frame 20 on the vehicle body 10, a guardrail 22 fixed on the top of the chute frame 20, and at least one chute pipe 21 provided on the chute frame 20.

[0022] like Figure 2-3 The chute pipe 21 includes multiple chute units 211 connected in series. The chute units 211 are open from top to bottom. Each chute unit 211 has a movable side wall, which is a flap 212. All flaps 212 are in the same direction in the chute pipe 21.

[0023] like Figure 4-5 An electric push rod 30 is provided on the chute pipe 21. The fixed end 31 of the electric push rod 30 is fixed on the chute pipe 21, and the moving end of the electric push rod 30 is fixed on the rocker arm 32. The end of the rocker arm 32 is fixed on the rotating shaft 33. The rotating shaft 33 is rotatably connected to the rotating shaft seat 34. The rotating shaft seat 34 is fixed on the chute pipe 21, and the flap 212 is fixed on the rotating shaft 33.

[0024] like Figure 4-5 To facilitate the detection of material height, a limit switch 35 is fixed on the outer wall of the lower end of the chute pipe 21. The limit switch 35 is electrically connected to the PLC (not shown in the figure), and the PLC is electrically connected to the electric push rod 30.

[0025] like Figure 1 , 4 To facilitate dust suppression by spraying, a nozzle 61 is fixed to the inner surface of the top corner of the flap 212. The nozzle 61 is connected to a water pump on the water tank 60 (not shown in the figure) through a pipe. The water tank 60 is fixed to the vehicle body 10, and the PLC is electrically connected to the water pump.

[0026] like Figure 7 In order to allow bidirectional material feeding, the chute frame 20 is equipped with two chute pipes 21, and the flaps 212 of the chute pipes 21 are located in the left and right directions of the chute frame 20 respectively.

[0027] The specific working process of the raw material yard chute device is as follows:

[0028] Before use, determine the required number of chute pipes to be assembled based on the material stacking height requirements of the material yard, and vertically stack and connect the chute pipes in series to form an assembly, with all flaps 212 in a vertical position (see [reference]). Figure 2 ), keep the chute pipe 21 vertical and unobstructed.

[0029] like Figure 6-7When in use, the upstream material receiving equipment 91 (such as a stacker) sends the material 92 into the inlet of one or two chute pipes 21. The chute pipes 21 flow vertically downward (see attached figure 93) to the first stockpiling area 71. Because the height from the bottom of the chute pipe 21 to the first stockpiling area 71 is about 1 meter, there is very little dust at this height.

[0030] As material increases in the first stockpiling area 71, it gradually encounters the limit switch 35 of the lowest chute pipe 21. The limit switch 35 notifies the PLC, which retracts the electric push rod 30, pulling the rocker arm 32 to rotate. The rotating shaft 33 and the flap 212 rotate synchronously, flipping the flap 212 onto the opposite side wall. The electric push rod 30 stops, and the flap 212 becomes a sealing plate 213, blocking the downward flow of material in the chute pipe 21. At the same time, the original position of the flap 212 forms a lateral discharge port, from which material can flow out (see...). Figure 3 ).

[0031] At this time, material 92 flows from the side outlet of chute pipe 21 to the second stockpile area 72 (see attached figure 94).

[0032] In this way, the material descends to the same vertical height as the chute unit 211, resulting in less dust.

[0033] Similarly, the side discharge ports of the upper chute unit 211 open sequentially, and the vertical height of the material falling is always maintained at the height of one chute unit 211.

[0034] There are two spraying methods, depending on the amount of dust generated by the material:

[0035] S1. Low dust emission: During the above process, only when a certain chute unit 211 becomes the adjacent chute unit 211 above the side discharge port, its nozzle 61 sprays water to suppress dust emission. When the flap 212 of the chute unit 211 becomes the sealing plate, the nozzle 61 closes.

[0036] In this way, spraying only the material about to flow out of the chute effectively suppresses dust.

[0037] S2. Large dust volume: When a certain chute unit 211 is on the flap 212, its nozzle 61 sprays water continuously; when the flap 212 of a certain chute unit 211 becomes a sealing plate, the nozzle 61 closes.

[0038] All dust generated from material discharge is contained within the chute pipe 21. Due to the limited space inside the chute pipe, dust inside the pipe is effectively reduced by spraying the nozzles of the spray system.

[0039] Other details are available in existing technologies and will not be elaborated further.

[0040] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A dust control method, characterized by: Use raw material field chute device; The raw material field chute device, including the car body (10), the car body (10) includes the wheel (11), the car body (10) on the chute frame (20), the top of the chute frame (20) is fixed with the guardrail (22), and at least one chute pipeline (21) is arranged on the chute frame (20); The chute pipeline (21) includes a plurality of serially connected chute units (211), the chute units (211) are vertically penetrated, each chute unit (211) has a movable side wall, the side wall is a flap (212), and all the flaps (212) are in the same direction of the chute pipeline (21); The chute pipeline (21) is provided with an electric push rod (30), the fixed end (31) of the electric push rod (30) is fixed on the chute pipeline (21), the moving end of the electric push rod (30) is fixed on a rocker arm (32), the end of the rocker arm (32) is fixed on a rotating shaft (33), the rotating shaft (33) is rotatably connected to a rotating shaft seat (34), the rotating shaft seat (34) is fixed on the chute pipeline (21), and the flap (212) is fixed on the rotating shaft (33); The inner surface of the top corner of the flap (212) is fixed with a nozzle (61), the nozzle (61) is connected to a water pump on a water tank (60) through a pipeline, the water tank (60) is fixed on the car body (10), and the water pump is electrically connected to the PLC; The upstream material feeding equipment (91) sends the material (92) into the inlet of one or two chute pipelines (21), and the chute pipeline (21) vertically flows downward to the first stacking area (71); With the increase of the material in the first stacking area (71), the material in the first stacking area (71) gradually hits the limit switch (35) of the lowermost chute pipeline (21), the limit switch (35) informs the PLC, the PLC retracts through the electric push rod (30), pulls the rocker arm (32) to rotate, the rotating shaft (33) and the flap (212) rotate synchronously, the flap (212) is turned over to the opposite side wall, the electric push rod (30) stops, at this time, the flap (212) becomes a sealing plate (213), and the original position of the flap (212) forms a lateral discharge port; at this time, the material (92) flows from the lateral discharge port of the chute pipeline (21) to the second stacking area (72); In this way, the lateral discharge ports of the above chute units (211) are opened in turn; In the above process, only when a certain chute unit (211) becomes the lateral discharge port of the adjacent chute unit (211) above, the nozzle (61) sprays water to suppress dust, and when the flap (212) of the chute unit (211) becomes a sealing plate, the nozzle (61) is closed.

2. The dust control method of claim 1, wherein: The limit switch (35) is fixed on the outer wall of the lower end of the chute pipeline (21), and the limit switch (35) is electrically connected to the PLC, and the PLC is electrically connected to the electric push rod (30).

3. The dust control method of claim 2, wherein: The chute frame (20) is provided with two chute pipelines (21), and the flaps (212) of the chute pipelines (21) are respectively in the left and right directions of the chute frame (20).

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