Dust sealing cover of screw conveyer

Abstract

The utility model relates to a dust sealing cover, and provides the dust sealing cover of the screw conveyer, which comprises the screw conveyer, a cover body, a supporting plate, a cover plate, a supporting rod and the like, a cover body is arranged on a stock bin of the spiral conveyor, a cavity is formed in the cover body, the cavity is communicated with the internal space of the stock bin of the spiral conveyor, a feeding port is formed in the front portion of the cover body, a cover plate is arranged at the feeding port in a rotating mode, supporting rods are hinged to the left side and the right side of the cover plate, the other ends of the supporting rods are connected with the cover body, and a supporting plate is arranged on the lower portion of the front side of the feeding port of the cover body. According to the dust-free station, the partition frame is arranged in the cover body to partition the inner space, the flow guide grooves are directionally formed in the two side areas, partitioned by the partition frame, of the area corresponding to the feeding port, and a plurality of directional negative pressure fields are formed in cooperation with suction of the draught fan; the problem that in the prior art, the dust suppression efficiency is low due to the fact that the negative pressure coverage area is too large and dust collection points are far away from a dust raising source is solved, and dust can be instantly captured at a generation source.

Description

Technical Field

[0001] This utility model relates to a dust sealing cover, and more particularly to a dust sealing cover for a screw conveyor. Background Technology

[0002] In fields such as mining transportation, screw conveyors are commonly used material conveying equipment. They use rotating helical blades to push materials along the casing to a designated location. During the process of material feeding from the inlet, the impact of falling material and the agitation caused by the rotation of the helical blades easily generate a large amount of dust. This dust not only pollutes the working environment and endangers the health of operators, but may also cause equipment malfunctions due to dust accumulation, and even pose a safety hazard of dust explosion. In existing technology, a cleanroom is usually set up near the screw conveyor inlet, using a wide-area suction method to collect dust. This involves using a large fan connected to pipes to create a large negative pressure area around the inlet, drawing the diffused dust into the collection device.

[0003] The existing wide-area suction structure of cleanroom stations has obvious design limitations: On the one hand, its suction range covers a wide area around the feed inlet, which disperses the limited negative pressure. The core dust-generating point near the feed inlet cannot form a sufficiently strong suction force, causing the newly generated dust to not be captured immediately but to spread in all directions, increasing the difficulty of subsequent collection. On the other hand, because the suction pipe is far from the dust source, the dust will adhere to the equipment surface, the ground and the air during the diffusion process, which not only reduces the collection efficiency, but also requires frequent cleaning of the equipment and working environment, increasing maintenance costs and workload. At the same time, wide-area suction requires a high-power fan to provide power, resulting in high energy consumption. Moreover, when the dust concentration is high, pipe blockage is prone to occur, affecting the continuous and stable operation of the equipment. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the objective is to provide a dust sealing cover for a screw conveyor.

[0005] The technical solution is as follows: A dust sealing cover for a screw conveyor, which includes a screw conveyor, a cover body, a support plate, a cover plate, a support rod, a deflector hood, a mounting seat, a filter cartridge, a fan and a partition frame. A cover body is provided on the silo of the screw conveyor. A cavity is provided inside the cover body, and the cavity is connected to the internal space of the silo of the screw conveyor. An inlet is opened at the front of the cover body, and a cover plate is rotatably provided at the inlet. Support rods are hinged on both the left and right sides of the cover plate, and the other ends of the support rods are connected to the cover body. A support plate is provided at the lower front side of the inlet of the cover body. The support plate is in a stepped shape with the front being higher and the rear being lower. A deflector hood is provided in the upper part of the cover body. An air duct is connected and communicated with the upper part of the deflector hood, and a fan is installed on the upper part of the air duct. A partition frame is fixedly provided inside the cover body. The partition frame divides the internal space of the cover body into a main cavity and two sub-cavities distributed on the left and right sides of the main cavity. Multiple diversion grooves are opened on both the left and right sides of the partition frame, and one of the diversion grooves on both the left and right sides of the partition frame is close to the inlet at the front of the cover body. A plurality of mounting seats are provided at the lower part of the deflector hood, and the multiple mounting seats are respectively arranged in the main cavity and the sub-cavities. Filter cartridges are snap-fitted on the mounting seats, and the internal spaces of the filter cartridges are all connected to the internal space of the deflector hood.

[0006] Furthermore, it further includes an intake pipe, an air valve and a shunt pipe. An air valve is provided on one side of the upper part of the cover body. An intake pipe is provided on the air valve, and the other end of the intake pipe extends into the deflector hood internally. A plurality of shunt pipes are connected and communicated with the intake pipe. The number of the shunt pipes is the same as the number of the mounting seats, and one end of each shunt pipe extends into a mounting seat respectively. Air flow outlets are provided at the ends of the shunt pipes.

[0007] Furthermore, it further includes a buffer plate and a torsion spring. The buffer plate is rotatably provided at the rear of the support plate, and a torsion spring is provided at the hinge joint between the buffer plate and the support plate.

[0008] Furthermore, it further includes a baffle plate. The baffle plate is provided at the front of the partition frame, and the baffle plate is in an overall shape of "匚".

[0009] Furthermore, it further includes a maintenance door. A viewing window is opened on the cover plate, and the viewing window is used for installing a transparent protection plate. Maintenance doors are rotatably provided on both the left and right sides of the cover body.

[0010] Compared with the prior art, the utility model has the following advantages: 1. By arranging a partition frame inside the cover body to divide the internal space, and arranging diversion grooves in a targeted manner on both sides of the area separated by the partition frame corresponding to the inlet, and cooperating with the suction of the fan to form multiple targeted negative pressure fields. Compared with the extensive design of wide-area suction in the traditional dust-free station, it avoids the problem of low dust suppression efficiency caused by the excessive negative pressure coverage area and the dust suction point being far from the dust generation source in the prior art, and realizes the immediate capture of dust at the source of generation.

[0011] 2. The utility model arranges a buffer plate at the inlet to form an inclined diversion structure. When pouring materials, it reduces the falling height of the materials, scatters the impact force of the materials and guides them to slide along the plate surface into the conveyor, effectively suppressing the dust flying caused by the high falling height. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a three-dimensional structural diagram of the concealed conveyor of this utility model.

[0014] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, such as the flow guide cover, filter cartridge, and partition frame.

[0015] Figure 4 This is a three-dimensional structural diagram of the dust collection mechanism of this utility model.

[0016] Figure 5 This is a three-dimensional structural diagram of the dust-shaking mechanism of this utility model.

[0017] Figure 6 This is a three-dimensional structural diagram of the cover and buffer mechanism of this utility model.

[0018] The parts and their numbers in the diagram are as follows: 1. Screw conveyor, 2. Cover, 21. Pallet, 3. Cover plate, 31. Support rod, 4. Flow guide, 41. Mounting base, 42. Filter cartridge, 43. Fan, 5. Partition frame, 5100. Flow guide channel, 6. Air inlet pipe, 61. Air valve, 62. Diverter pipe, 7. Buffer plate, 71. Torsion spring, 8. Baffle, 9. Inspection door. Detailed Implementation

[0019] The preferred technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Example 1

[0021] A dust sealing cover for a screw conveyor, such as Figure 1-4As shown, the assembly includes a screw conveyor 1, a cover 2, a pallet 21, a cover plate 3, a support rod 31, a guide hood 4, a mounting base 41, a filter cartridge 42, a fan 43, and a partition frame 5. The cover 2 is bolted to the hopper of the screw conveyor 1, enclosing the feeding area of ​​the hopper and forming a relatively sealed space to prevent dust from spreading outwards. The cover 2 has a cavity that communicates with the internal space of the hopper of the screw conveyor 1, allowing dust generated inside the hopper to enter the cavity of the cover 2 for treatment. 2. A feed inlet is provided at the front. The feed inlet is the channel for feeding materials into the hopper of the screw conveyor 1. A cover plate 3 is provided at the feed inlet by a hinge. The cover plate 3 can rotate around the hinge to open and close the feed inlet. When closed, it can reduce dust from overflowing from the feed inlet. When open, it is convenient for feeding. Support rods 31 are hinged to both sides of the cover plate 3. The other end of the support rods 31 is hinged to the cover body 2. The support rods 31 can support the cover plate 3 and keep it at a certain opening and closing angle, which is convenient for operators to feed materials and prevents the cover plate 3 from closing on its own and affecting the feeding operation.

[0022] A support plate 21 is provided on the lower front side of the feed inlet of the hood 2. The support plate 21 is fixed to the hood 2 by welding. The support plate 21 is stepped in shape with a higher front and lower back. This shape design makes it easy for operators to place materials and guides the materials to slide smoothly into the feed inlet, reducing the accumulation of materials at the feed inlet and thus reducing dust caused by material accumulation. A guide hood 4 is provided in the upper part of the hood 2. The guide hood 4 is fixed inside the hood 2 by a bracket. Its interior forms an airflow channel to guide the flow of dust-laden air. The upper part of the guide hood 4 is connected to and connected to a duct. The duct is fixedly connected to the guide hood 4 by a flange. A fan 43 is installed on the upper part of the duct. The fan 43 is connected to the duct by a connection. The fan 43 is bolted together and controlled to start and stop by the control system. When the fan 43 is working, it generates negative pressure in the guide hood 4 and the air duct, thus creating suction in the cavity of the hood 2. A partition frame 5 is fixed inside the hood 2 by welding or bolting. The partition frame 5 divides the internal space of the hood 2 into a main cavity and two secondary cavities located on the left and right sides of the main cavity. This partition design guides the airflow in a directional manner, avoiding airflow turbulence that could affect the dust collection effect. Multiple guide channels 5100 are opened on both sides of the partition frame 5. The guide channels 5100 provide channels for the dust airflow to flow from the secondary cavities and the main cavity to the guide hood 4. One of the guide channels 5100 on the left and right sides of the partition frame 5 is close to the feed inlet at the front of the cover 2, so that the dust generated at the feed inlet can be quickly sucked in through the guide channel 5100, enhancing the dust capture efficiency at the feed inlet; during the feeding stage, when the operator opens the cover plate 3 to put material into the feed inlet, the falling material will generate a large amount of dust. At this time, the fan 43 starts, forming a negative pressure inside the cover 2. Due to the separation effect of the partition frame 5, the negative pressure will be concentrated on each cavity. Under the action of negative pressure, part of the dust at the feed inlet directly enters the main cavity, and the other part enters the auxiliary cavities on the left and right sides, and then flows through the guide channel 5100 on the partition frame 5 to The guide hood 4 effectively prevents dust from spreading outward from the feed inlet, achieving immediate capture of dust emitted from the feed inlet. The lower part of the guide hood 4 is provided with several mounting seats 41, which are fixed to the guide hood 4 with bolts. Multiple mounting seats 41 are respectively arranged in the main cavity and the auxiliary cavity, so that the dust-laden airflow in each cavity can be filtered by the filter cartridge 42. The mounting seats 41 are all clamped with filter cartridges 42, and the internal space of the filter cartridges 42 is connected to the internal space of the guide hood 4. The filter cartridges 42 can filter the dust-laden airflow and intercept the dust outside the filter cartridges 42. The purified air is discharged by the fan 43 through the guide hood 4 and the air duct, avoiding direct dust emission and environmental pollution.

[0023] like Figure 1-5As shown, it also includes an air inlet pipe 6, an air valve 61, and a diverter pipe 62. An air valve 61 is located on one side of the upper part of the cover 2. The air valve 61 is fixed to the cover 2 by a bracket. The air valve 61 is controlled by a control system to control the airflow rate entering the air inlet pipe 6. The air valve 61 is equipped with the air inlet pipe 6, which is threadedly connected to the air valve 61. The other end of the air inlet pipe 6 extends into the guide shroud 4. Several diverter pipes 62 are connected and communicate with the air inlet pipe 6. The diverter pipes 62 are connected to the air inlet pipe 6 via tee connectors. The number of diverter pipes 62 is the same as the number of mounting bases 41, and one end of each diverter pipe 62 extends into a mounting base 41. Each end of the diverter pipe 62 is equipped with a... At the air outlet, after the filter cartridge 42 has been used for a period of time, a large amount of dust will adhere to its surface, affecting the filtration effect. At this time, the control system opens the control valve 61, and external high-pressure gas enters through the inlet pipe 6, and is then divided by the diverter pipe 62 before being ejected from the air outlet at the end of each diverter pipe 62. The high-pressure airflow will back-blow the surface of the filter cartridge 42, blowing off the attached dust. The blown-off dust will fall into the hopper of the screw conveyor 1 and be transported away, realizing the automatic cleaning of the filter cartridge 42 and ensuring the filtration efficiency of the filter cartridge 42. The opening degree of the air valve 61 can be adjusted according to the degree of contamination of the filter cartridge 42 to control the intensity of the back-blowing airflow, ensuring the cleaning effect while avoiding damage to the filter cartridge 42 due to excessive airflow.

[0024] Example 2

[0025] Based on Example 1, such as Figure 6 As shown, it also includes a buffer plate 7 and a torsion spring 71. The buffer plate 7 is rotatably mounted on the rear of the support plate 21 via a pin. The buffer plate 7 can rotate around the pin, and its plate surface faces the feed inlet. A torsion spring 71 is provided at the hinge between the buffer plate 7 and the support plate 21. The torsion spring 71 is sleeved on the pin, with one end fixedly connected to the support plate 21 and the other end fixedly connected to the buffer plate 7, which is used to provide the reset spring force for the buffer plate 7. When the material slides from the support plate 21 to the feed inlet, it will first contact the buffer plate 7. The buffer plate 7 rotates downward under the action of the material's gravity, buffering the falling speed of the material through its own rotation. At the same time, the torsion spring 71 is compressed, reducing the drop difference between the material and the material in the hopper, reducing the impact dust generated by the direct high-speed impact of the material. After the material passes, the torsion spring 71 drives the buffer plate 7 to reset, waiting for the next buffering, effectively reducing the amount of dust from the source.

[0026] like Figure 1 and Figure 2As shown, it further includes a baffle 8. The front part of the partition frame 5 is fixedly provided with the baffle 8 by bolts. The baffle 8 is integrally in a "C" shape, with its opening facing the feed inlet. The two side edges respectively correspond to the inlets of the diversion grooves 5100 on the left and right sides of the partition frame 5, and the bottom edge is in contact with the front part of the partition frame 5. When the dust-containing air flow at the feed inlet flows towards the partition frame 5 under the action of negative pressure, the "C"-shaped baffle 8 can block the air flow from diffusing in other directions and guide the dust-containing air flow to the opening of the diversion groove 5100, making the air flow concentrate on flowing towards the diversion grooves 5100 on the left and right sides of the partition frame 5, avoiding the air flow from bypassing the diversion groove 5100 due to turbulence, further improving the efficiency of the dust-containing air flow entering the diversion groove 5100, and enhancing the dust capture effect.

[0027] As Figure 1 , Figure 2 and Figure 6 As shown, it further includes a maintenance door 9. A viewing window is opened on the cover plate 3, and a transparent protective plate is fixedly installed at the edge of the viewing window through sealant. The transparent protective plate is made of acrylic or tempered glass, which is convenient for operators to observe the feed inlet and the conveying situation of the internal materials without opening the cover plate 3, reducing the dust leakage caused by frequent opening of the cover for observation. Maintenance doors 9 are rotatably provided on both left and right sides of the housing 2 through hinges. Sealing strips are provided at the edges of the maintenance doors 9, which can ensure the sealing of the auxiliary cavity when closed, preventing negative pressure leakage. When it is necessary to replace or maintain the filter cartridge 42 in the auxiliary cavity, the operator can open the corresponding maintenance door 9 on one side and directly access the mounting seat 41 in the auxiliary cavity, so as to conveniently remove the old filter cartridge 42 and install a new filter cartridge 42, or perform maintenance on the filter cartridge 42 without disassembling the entire housing 2, greatly improving the convenience of maintenance.

[0028] The above embodiments are provided for those skilled in the art to implement or use the present utility model. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present utility model. Therefore, the protection scope of the present utility model is not limited by the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A dust sealing cover for a screw conveyor, comprising a screw conveyor (1) and a cover body (2). The cover body (2) is provided on the silo of the screw conveyor (1). A cavity is provided inside the cover body (2), and the cavity is communicated with the internal space of the silo of the screw conveyor (1). Its features are, It further includes a support plate (21), a cover plate (3), a support rod (31), a deflector hood (4), a mounting seat (41), a filter cartridge (42), a fan (43) and a partition frame (5). An inlet is opened at the front of the cover body (2), and a cover plate (3) is rotatably provided at the inlet. Support rods (31) are hinged on both the left and right sides of the cover plate (3), and the other ends of the support rods (31) are respectively connected to the cover body (2). A support plate (21) is provided at the lower front side of the inlet of the cover body (2). The support plate (21) is in a stepped shape with the front being higher and the rear being lower. A deflector hood (4) is provided at the upper part inside the cover body (2). An air duct is connected and communicated to the upper part of the deflector hood (4), and a fan (43) is installed on the upper part of the air duct. A partition frame (5) is fixedly provided inside the cover body (2). The partition frame (5) divides the internal space of the cover body (2) into a main cavity and two sub-cavities distributed on the left and right sides of the main cavity. A plurality of diversion grooves (5100) are opened on both the left and right sides of the partition frame (5), and one of the diversion grooves (5100) on both the left and right sides of the partition frame (5) is close to the inlet at the front of the cover body (2). A plurality of mounting seats (41) are provided at the lower part of the deflector hood (4), and the plurality of mounting seats (41) are respectively arranged in the main cavity and the sub-cavities. Filter cartridges (42) are snap-fitted on the mounting seats (41), and the internal spaces of the filter cartridges (42) are all communicated with the internal space of the deflector hood (4).

2. The dust sealing cover for a screw conveyor as described in claim 1, characterized in that, It further includes an intake pipe (6), an air valve (61) and a shunt pipe (62). An air valve (61) is provided on one side of the upper part of the cover body (2). The intake pipe (6) is provided on the air valve (61). The other end of the intake pipe (6) extends into the deflector hood (4) internally. A plurality of shunt pipes (62) are connected and communicated to the intake pipe (6). The number of the shunt pipes (62) is the same as the number of the mounting seats (41), and one end of each shunt pipe (62) respectively extends into a mounting seat (41). Air flow outlets are provided at the ends of the shunt pipes (62).

3. A dust sealing cover for a screw conveyor as described in claim 2, characterized in that, It further includes a buffer plate (7) and a torsion spring (71). The buffer plate (7) is rotatably provided at the rear of the support plate (21), and a torsion spring (71) is provided at the hinge joint of the buffer plate (7) and the support plate (21).

4. A dust sealing cover for a screw conveyor as described in claim 3, characterized in that, It further includes a baffle (8). The baffle (8) is provided at the front of the partition frame (5), and the baffle (8) is in an overall "匚” shape.

5. A dust sealing cover for a screw conveyor as described in claim 4, characterized in that, It further includes a maintenance door (9). A window is opened on the cover plate (3), and the window is used for installing a transparent protection plate. Maintenance doors (9) are rotatably provided on both the left and right sides of the cover body (2).

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