Sand sprayer

Abstract

The utility model relates to a sander, it relates to sander field, it includes the sander shell that connects to the sand box, the sander shell has the sandstone channel that the sandstone passes through, the sandstone channel includes the sand inlet channel that the sandstone enters and the sand outlet channel that the sandstone flows out, the sandstone channel is equipped with the sandstone channel that the sandstone passes through, the sandstone channel is equipped with the sand inlet channel that the sandstone enters and the sand outlet channel that the sandstone flows out. A partition plate used for separating the sand inlet channel and the sand outlet channel to form a concentric-square-shaped structure is arranged between the sand inlet channel and the sand outlet channel, the partition plate is of a telescopic structure and is rotationally installed on the sand and gravel channel to cover an outlet of the sand outlet channel, and an air blowing device used for guiding sand and gravel is arranged in the sand and gravel channel. The sand sprayer has the effect of reducing the power consumption of the sand sprayer.

Description

Technical Field

[0001] This utility model relates to the field of sand spreaders, and more particularly to a sand spreader. Background Technology

[0002] The sand spreader is an important device on locomotives. It increases the friction between the locomotive and the railway by spreading sand on the rail surface, thereby improving braking efficiency and preventing slippage and coasting.

[0003] Chinese utility model patent CN207078148U discloses a sand spreader, which includes a first sand flow channel and a second sand flow channel. Sand is transported from a sand box to the first sand flow channel via a drive mechanism, falls downwards through the second sand flow channel, and is then sprayed out from the sand outlet. During the falling process, an air intake unit assists in controlling the sand flow. In the above structure, the drive mechanism is a motor-screw structure. By controlling the rotational speed of the drive mechanism, the flow rate of the sand entering the channel can be controlled, thereby indirectly controlling the sand spraying speed. Using a motor-screw structure for drive and an air intake unit to control the sand spraying speed results in high energy consumption, which needs improvement. Utility Model Content

[0004] In order to reduce the power consumption of sand spreaders, this utility model provides a sand spreader.

[0005] The sand spreader provided by this utility model adopts the following technical solution:

[0006] A sand spreader includes a sand spreader housing connected to a sand box. The sand spreader housing has a sand channel through which sand and gravel pass. The sand channel includes an inlet channel for sand and gravel to enter and an outlet channel for sand and gravel to exit. A partition is provided between the inlet channel and the outlet channel to separate them and form a U-shaped structure. The partition is a telescopic structure and is rotatably installed in the sand channel to cover the outlet of the outlet channel. A blowing device for guiding sand and gravel is provided inside the sand channel.

[0007] By adopting the above technical solution, when the sand spreader is in use, the baffle is rotated to form a U-shaped structure. When sand enters the sand spreader, it is first blocked by the baffle, preventing it from being directly ejected from the sand outlet. When sand accumulates at the baffle, an air blower is used to blow air around the baffle, allowing the sand to flow out of the sand outlet. The baffle's extension and retraction are controlled to adjust the gap between the baffle and the sand channel, and both actions are combined to synchronously control the sand output. When the sand spreader is not in use, the baffle is rotated to cover the outlet of the sand channel, preventing large sand particles from flying into the sand spreader and causing blockages. Compared with existing technologies, the above structure only uses a combination of a baffle and an air blower for control, resulting in lower energy consumption.

[0008] Optionally, the partition is vertically arranged, and the blowing device includes a first blower head disposed in the sand inlet channel and used to blow sand and gravel over the partition to enter the sand outlet channel, and a second blower head disposed in the sand outlet channel and used to blow sand and gravel out of the sand spreader housing.

[0009] By adopting the above technical solution, and by setting the baffle vertically, sand and gravel entering the sand spreader must be flipped over the baffle in the vertical direction before being sprayed out of the sand spreader's outlet, thus avoiding the possibility of sand and gravel directly bypassing the baffle and flowing out of the sand spreader. Simultaneously, the installation of a first blower head and a second blower head in the sand inlet and outlet channels respectively facilitates the sand and gravel flipping over the baffle and allows for control of the sand and gravel flow rate. This is quite convenient.

[0010] Optionally, the sand outlet channel has a sand outlet, the sand inlet channel has a sand inlet, and the second blower head is directly opposite the sand outlet.

[0011] By adopting the above technical solution, when the sand and gravel flip over the partition and enter the sand discharge channel, since the second blower head is directly facing the sand discharge port, the sand and gravel can be sprayed directly out of the sand discharge port through the second blower head, and it is not easy to accumulate in the sand discharge channel.

[0012] Optionally, the blowing device includes a blowing head and an extension duct installed on the blowing head for extending the blowing head.

[0013] By adopting the above technical solution, by installing an extended air duct on the air blowing head to lengthen the air blowing head, it is not easy for sand and gravel to enter the air blowing head when flowing in the sand and gravel channel, thus preventing the air blowing head from becoming blocked.

[0014] Optionally, the extended duct has a ventilation groove communicating with the air hole of the air blower, the ventilation groove being stepped and having a stepped surface for blocking sand and gravel.

[0015] By adopting the above technical solution, when some sand and gravel accidentally enter the ventilation channel, the sand and gravel need to overcome the airflow resistance of the air blowing head and the friction between the sand and gravel and the ventilation channel. Finally, the stepped surface can also block the sand and gravel, so that the sand and gravel are not easy to splash into the air blowing head and block it.

[0016] Optionally, the first blower head is installed on the top of the sand inlet channel, and the extended air duct of the first blower head is located above the plane of the top of the partition.

[0017] By adopting the above technical solution, with the first blower head positioned at the top, sand and gravel must overcome their own weight before entering the blower head, thus reducing the probability of sand and gravel entering the blowing device. Furthermore, when the extended duct of the first blower head is located above the plane of the top of the partition, a gap is left for sand and gravel to enter the sand outlet channel. By blowing air onto the sand and gravel through the first blower head, the sand and gravel can be lifted and flipped over the partition within the sand inlet channel.

[0018] Optionally, the second blower head is installed on the top of the sand outlet channel, and the extension duct of the second blower head extends into the plane below the top of the partition plate.

[0019] By adopting the above technical solution, when sand and gravel cross the partition and enter the sand discharge channel, the extended air duct of the second blower head extends below the plane where the top of the partition is located, so that the sand and gravel will only flow out of the sand discharge port along the sand discharge channel under the guidance of the second blower head, and will not easily enter the second blower head, thus avoiding blockage.

[0020] Optionally, the sand inlet channel has an operating port extending to the outside of the sand spreader housing.

[0021] By adopting the above technical solution, when there is sand and gravel blockage in the sand inlet channel, the sand and gravel in the sand inlet channel can be processed through the operating port, which is quite convenient.

[0022] Optionally, the first blower head is positioned directly opposite the operating port.

[0023] By adopting the above technical solution, since the first blower head is directly facing the operation port, the first blower head can be directly replaced and maintained through the operation port, which is quite convenient.

[0024] Optionally, the sand inlet channel is also provided with a sand cleaning port, which is directly opposite the sand inlet.

[0025] By adopting the above technical solution, when cleaning the sand and gravel in the sand spreader, the sand and gravel can enter the sand cleaning port for processing by opening the sand cleaning port. Furthermore, when there is an abnormality at the sand inlet, it can also be processed through the sand cleaning port, which is quite convenient.

[0026] In summary, this utility model has at least one of the following beneficial technical effects:

[0027] 1. A sand spreader, comprising a baffle plate installed between a sand inlet channel and a sand outlet channel, which blocks sand from being directly ejected from the outlet when it enters the spreader. When sand accumulates at the baffle plate, an air blowing device is used to blow air around the baffle plate and allow the sand to flow out of the outlet. The blowing force of the air blowing device determines the amount of sand discharged. Compared with the prior art, the above structure only uses a combination of a baffle plate and an air blowing device for control, resulting in lower energy consumption.

[0028] 2. By installing an extension duct on the air blower to lengthen the air blower, when some sand and gravel accidentally enter the ventilation channel, the sand and gravel need to overcome the airflow resistance of the air blower and the friction between the sand and gravel and the ventilation channel. Finally, the stepped surface can also block the sand and gravel, so that the sand and gravel are not easy to splash into the air blower and block it.

[0029] 3. When the extended duct of the first blower is located above the plane of the top of the partition, it can leave a gap for sand and gravel to enter the sand outlet channel. When the first blower blows air onto the sand and gravel, the sand and gravel can be lifted up in the sand inlet channel and overturn the partition. When the sand and gravel overturn the partition and enter the sand outlet channel, because the extended duct of the second blower extends below the plane of the top of the partition, the sand and gravel will only flow out of the sand outlet through the sand outlet channel under the guidance of the second blower, and will not easily enter the second blower, thus avoiding blockage. Attached Figure Description

[0030] Figure 1 This is an overall sectional view of a sand spreader according to an embodiment of this utility model;

[0031] Figure 2 This is an embodiment of the present invention. Figure 1 A magnified view of a portion of point A in the middle.

[0032] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Sand spreader housing; 2. Blowing device; 21. Second blower head; 22. First blower head; 23. Air blowing head; 24. Extension duct; 25. Ventilation groove; 26. Stepped surface; 3. Sand and gravel channel; 31. Sand inlet channel; 32. Sand outlet channel; 4. Sand inlet; 5. Sand outlet; 6. Partition plate; 7. Operating port; 8. Sand cleaning port. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0034] This utility model discloses a sand spreader.

[0035] Reference Figure 1A sand spreader includes a sand spreader housing 1 and a blowing device 2. The sand spreader housing 1 is typically located at the bottom of a sand box and connected to the sand box for allowing sand particles in the sand box to pass through and fall onto a track. The blowing device 2 is used to blow air onto the sand particles entering the sand spreader housing 1 to give the sand particles the power to leave the sand spreader housing 1.

[0036] The sand spreader housing 1 has a sand channel 3 inside. Both ends of the sand channel 3 penetrate the sand spreader housing 1. One end is a sand inlet 4 for sand particles to enter the sand channel 3, and the other end is a sand outlet 5 for sand particles to be blown out of the sand channel 3.

[0037] In this embodiment, a partition 6 is rotatably installed inside the sand and gravel channel 3, dividing the sand and gravel channel 3 into a sand inlet channel 31 and a sand outlet channel 32. The sand inlet channel 31 is connected to the sand inlet 4, and one end of the sand outlet channel 32 is connected to the tail end of the sand inlet channel 31, while the other end is connected to the sand outlet 5. The partition 6 is vertically installed inside the sand and gravel channel 3, forming a U-shaped channel structure between the sand inlet channel 31 and the sand outlet channel 32.

[0038] The partition 6 is a telescopic structure, allowing it to extend and retract within the sand and gravel channel 32. When the partition 6 is vertically installed, extending and retracting it adjusts the gap between the partition 6 and the sand and gravel channel 31. When the partition 6 is horizontally installed, it covers the sand outlet 5.

[0039] There are two blowing devices 22, including a first blowing head 22 and a second blowing head 21. The first blowing head 22 is located inside the sand inlet channel 31, and the second blowing head 21 is located inside the sand outlet channel 32 and directly opposite the sand outlet 5. Both the first blowing head 22 and the second blowing head 21 are located at the top of the sand channel 3. When the first blowing head 22 blows air into the sand particles in the sand inlet channel 31, the sand particles in the sand inlet channel 31 can be lifted up. When the second blowing head 21 blows air into the sand outlet channel 32, a negative pressure is formed in the sand outlet channel 32. At this time, the sand particles lifted up in the sand inlet channel 31 can be sucked into the sand outlet channel 32 and blown out from the sand outlet 5.

[0040] Since both the first blower head 22 and the second blower head 21 are located at the top and blow air vertically downwards, when sand and gravel are lifted up, they need to overcome the force of gravity and are not easy to enter the first blower head 22 and the second blower head 21.

[0041] Reference Figure 1 and Figure 2Furthermore, to prevent sand particles from easily entering the air vents of the blower 2, the blower 2 includes an air head 23 and an extension duct 24. The extension duct 24 is cylindrical and threadedly connected to the air head 23. Both the first blower 22 and the second blower 21 have extension ducts 24. The extension duct 24 has a ventilation groove 25 that communicates with the air vents of the air head 23, thereby extending the air outlet channel of the blower 2. Moreover, the inner diameter of the extension duct 24 is larger than the inner diameter of the air vents of the air head 23, making the ventilation groove 25 stepped and having a stepped surface 26 for blocking sand and gravel. Even if sand particles enter the ventilation groove 25, they can impact the inner wall of the ventilation groove 25 and then collide with the stepped surface 26, thus falling out of the ventilation groove 25. They are less likely to get stuck in the ventilation groove 25 and have a lower probability of directly blocking the air vents of the blower 2.

[0042] To facilitate the replacement and sand cleaning of the first blower head 22, an operating port 7 is provided in the sand inlet channel 31. The operating port 7 extends to the outside of the sand spreader, and the first blower head 22 is directly opposite the operating port 7.

[0043] In this embodiment, the extension duct 24 on the first blower head 22 is relatively short and is located above the plane of the top of the partition 6, so that there is a large cavity in the sand inlet channel 31 for the first blower head 22 to blow air onto the sand particles and make them rise. The extension duct 24 on the second blower head 21 is relatively long and is located below the plane of the top of the partition 6, so that the sand particles that are raised and flipped over the partition 6 in the sand inlet channel 31 are less likely to enter the second blower head 21.

[0044] The sand spreader housing 1 is also provided with a sand cleaning port 8. The sand cleaning port 8 is located in the sand inlet channel 31 and is directly opposite the sand inlet 4. When cleaning the sand and gravel in the sand spreader, the sand and gravel can enter the sand cleaning port 8 for processing by opening the sand cleaning port 8. And when there is an abnormality at the sand inlet 4, the sand inlet 4 can also be processed through the sand cleaning port 8.

[0045] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A sand spreader comprising a sand spreader housing (1) connected to a sand box, said sand spreader housing (1) having a grit passage (3) for grit to pass through, characterized in that, The sand and gravel channel (3) includes a sand inlet channel (31) for sand and gravel to enter and a sand outlet channel (32) for sand and gravel to flow out. A partition (6) is provided between the sand inlet channel (31) and the sand outlet channel (32) to separate them and form a U-shaped structure. The partition (6) is a telescopic structure and is rotatably installed in the sand and gravel channel (3) to cover the outlet of the sand outlet channel (32). A blowing device (2) for guiding sand and gravel is provided in the sand and gravel channel (3).

2. A spreader according to claim 1, wherein, The partition (6) is vertically arranged, and the blowing device (2) includes a first blowing head (22) disposed in the sand inlet channel (31) and used to blow sand and gravel over the partition (6) to enter the sand outlet channel (32) and a second blowing head (21) disposed in the sand outlet channel (32) and used to blow sand and gravel out of the sand spreader housing (1).

3. A spreader according to claim 2, wherein, The sand outlet channel (32) has a sand outlet (5), the sand inlet channel (31) has a sand inlet (4), and the second blower head (21) is directly opposite the sand outlet (5).

4. A spreader according to claim 2, wherein, The blowing device (2) includes a blowing head (23) and an extension duct (24) installed on the blowing head (23) for extending the blowing head (23).

5. A spreader according to claim 4, wherein, The extended duct (24) has a ventilation groove (25) communicating with the air hole of the air blower (23), the ventilation groove (25) being stepped and having a stepped surface (26) for blocking sand and gravel.

6. A spreader according to claim 4, wherein, The first blower head (22) is installed on the top of the sand inlet channel (31), and the extension duct (24) of the first blower head (22) is located above the plane of the top of the partition (6).

7. A spreader according to claim 4, wherein, The second blower head (21) is installed on the top of the sand outlet channel (32), and the extension duct (24) of the second blower head (21) extends into the plane below the top of the partition plate (6).

8. A spreader according to claim 3, wherein, The sand inlet channel (31) has an operating port (7) that extends to the outside of the sand spreader housing (1).

9. A spreader according to claim 8, wherein, The first blower head (22) is directly opposite the operation port (7).

10. A spreader according to claim 9, wherein, The sand inlet channel (31) is also provided with a sand cleaning port (8), which is directly opposite the sand inlet (4).

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