Powder transfer warehouse

Abstract

The utility model belongs to the technical field of integrated grinding equipment, and relates to a powder transfer warehouse which comprises a powder silo, four transfer warehouses are installed on the periphery of the powder silo, silo top dust removers are arranged on the tops of the transfer warehouses, feeding spirals are connected below the transfer warehouses, the tail ends of the feeding spirals are connected with a bulk machine, and the bulk machine is provided with a high-pressure fan. An outlet of the high-pressure fan communicates with the top of the transfer bin through a dust removal pipe. The cement transportation distance is shortened, and the powder transportation cost is saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of integrated grinding equipment, specifically relating to a powder transfer silo. Background Technology

[0002] In industries such as concrete mixing, building materials production, and metallurgy, the transportation and storage of powder materials are crucial. Currently, the commonly used technical solution in the industry is to transport powder materials directly from the production site to the application site via bulk transport trucks, and then use ash blowing pipes to blow the powder materials into the mixing plant silos for temporary storage. Currently, the amount of powder materials used in the concrete mixing field is generally large, and the conventional practice is to transport the powder materials to the site by bulk trucks and then blow them into the silos from the mixing plant silos using ash blowing pipes.

[0003] However, transportation costs are high in some remote areas. For projects in remote areas, powder materials need to be transported from the central production area over hundreds of kilometers to the site, significantly increasing fuel costs and vehicle wear and tear. Bulk trucks can only achieve "point-to-point" transportation, lacking regional transit warehouse support, resulting in multiple construction sites in the same area having to repeatedly call upon bulk trucks, leading to serious resource waste. Therefore, a powder material transit warehouse is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a powder transfer warehouse with powder transportation and transfer functions, which solves the problem of high transportation costs in the existing technology, which involves transporting powder in bulk by truck to the site and then blowing it into the warehouse through the ash-blowing pipe from the mixing plant silo.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a powder transfer silo, including a powder silo, a transfer bin installed around the powder silo, a dust collector installed on the top of the transfer bin, a feeding screw connected below the transfer bin, a bulk loader connected to the end of the feeding screw, the bulk loader being equipped with a high-pressure blower, and the outlet of the high-pressure blower being connected to the top of the transfer bin through a dust collection pipe.

[0006] Preferably, the powder silo adopts a double-layer structure, with an inner layer of 304 stainless steel and an outer layer of Q235B carbon steel, and polyurethane foam is filled between the inner and outer layers. The inner wall of the powder silo is lined with ceramic wear-resistant plates.

[0007] Preferably, the dust collector on the top of the silo is a pulse-jet bag filter with a PTFE-coated polyester filter bag inside.

[0008] Preferably, the feeding screw includes a horizontal section and an inclined section, with the angle between the inclined section and the horizontal section being 30-45°, and the blade surface of the feeding screw is coated with a tungsten carbide wear-resistant coating.

[0009] Preferably, the bulk loader is a telescopic bulk loader, and a gravity sensor is installed at the outlet, which is interlocked with the drive motor of the feeding screw.

[0010] Preferably, the high-pressure blower is a centrifugal high-pressure blower with a rated air volume of 8000-12000 m³ / h. 3 / h, working pressure 12-18kPa, the high-pressure blower uses an aluminum alloy impeller and has been dynamically balanced.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. This utility model shortens the cement transportation distance and saves on powder transportation costs;

[0013] 2. This utility model has the function of transporting and transferring powder materials, which solves the problem of high transportation costs in the existing technology, which involves transporting powder materials to the site by bulk truck and then blowing them into the silo through the ash-blowing pipe. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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 based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a powder transfer warehouse according to one embodiment;

[0016] In the above diagram, 1 is the transfer silo, 2 is the dust removal pipe, 3 is the silo top dust collector, 4 is the feeding screw, 5 is the bulk loader, and 6 is the high-pressure blower. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1, as Figure 1As shown, a powder transfer warehouse includes powder silos, which are common silo structures used as storage units for centralized temporary storage of powder materials, such as cement. The transfer silos are then used as secondary transfer hubs 1 to facilitate the transfer of powder materials. The transfer silos 1 are installed around the powder silos, serving as temporary buffers and transfer stations for the powder materials. They connect to a feeding screw 4 and a bulk loader 5, shortening the powder transfer path, reducing transportation energy consumption, preventing dust spillage, and ensuring a clean working environment.

[0020] A dust collector 3 is installed on the top of the transfer silo 1 to filter the dust generated during the loading and unloading of powder materials. A feeding screw 4 is connected to the bottom of the transfer silo 1, and the end of the feeding screw 4 is connected to a bulk loader 5. The bulk loader 5 accurately loads the powder materials into the transport vehicle. The feeding screw 4 transports the powder materials in the transfer silo 1 to the bulk loader 5, completing the quantitative conveying before loading. The bulk loader 5 is equipped with a high-pressure blower 6, which provides pneumatic conveying power and recovers the dust emitted by the bulk loader 5 to the transfer silo 1 through the dust collection pipe 2. The outlet of the high-pressure blower 6 is connected to the top of the transfer silo 1 through the dust collection pipe 2. The dust collection pipe 2 transports the dust recovered by the high-pressure blower 6 back to the transfer silo 1, forming a closed-loop system.

[0021] The specific design of the aforementioned key components will be discussed in detail below:

[0022] The powder silo adopts a double-layer structure, with an inner layer of 304 stainless steel and an outer layer of Q235B carbon steel, filled with polyurethane foam between the inner and outer layers. The inner wall of the silo is lined with ceramic wear-resistant plates. The inner layer of the silo directly contacts the powder, and the 304 stainless steel's strong corrosion resistance prevents rusting caused by alkaline or acidic substances such as cement and mineral powder. The outer layer, made of Q235B carbon steel, provides structural support and compressive strength, reducing overall manufacturing costs. The polyurethane foam insulation in the middle layer prevents external high or low temperatures from affecting the stability of the powder (e.g., cement clumping due to moisture), while also reducing noise and vibration generated during powder transportation.

[0023] The dust collector 3 on the top of the silo is a pulse-jet bag filter. It automatically removes accumulated dust by periodically blowing the filter bags with compressed air in the reverse direction. The filter bags are made of PTFE-coated polyester material. The PTFE (polytetrafluoroethylene) membrane prevents water vapor and oil from penetrating and avoids filter bag caking and failure.

[0024] The feeding screw 4 includes a horizontal section and an inclined section, with the angle between the inclined section and the horizontal section being 30-45°. The blade surface of the feeding screw 4 is coated with a tungsten carbide wear-resistant coating.

[0025] The bulk loading machine 5 is a telescopic bulk loading machine 5. At the outlet, a gravity sensor is interlocked with the drive motor of the feeding screw 4. The gravity sensor dynamically detects the loading weight (e.g., 50 tons of cement per truck) and is linked with the motor of the feeding screw 4. When the weight approaches the set value, the speed is automatically reduced, and the machine stops immediately when the weight exceeds the limit. The error is controlled within ±100kg.

[0026] The high-pressure blower 6 is a centrifugal high-pressure blower with a rated air volume of 8000-12000 m³ / h. 3 / h, covering the dust generated during loading by bulk loader 5, with an operating pressure of 12-18kPa, providing sufficient negative pressure to ensure efficient dust recovery through dust collection pipe 2. The high-pressure blower 6 uses an aluminum alloy impeller that has undergone dynamic balancing calibration. The aluminum alloy impeller is lighter than a cast iron impeller, reducing the motor load. The anodized surface is resistant to corrosion from humid and dusty gases. The residual impeller imbalance is ≤5g·mm / kg, the vibration value during operation is <4.5mm / s, and the noise is <85dB(A).

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A powder transfer silo, comprising powder silos, characterized in that, The powder silo is surrounded by a transfer silo, and a silo top dust collector is installed on the top of the transfer silo. A feeding screw is connected to the bottom of the transfer silo, and the end of the feeding screw is connected to a bulk loader. The bulk loader is equipped with a high-pressure blower, and the outlet of the high-pressure blower is connected to the top of the transfer silo through a dust collection pipe.

2. The powder transfer silo according to claim 1, characterized in that, The powder silo adopts a double-layer structure, with an inner layer of 304 stainless steel and an outer layer of Q235B carbon steel. The space between the inner and outer layers is filled with polyurethane foam, and the inner wall of the powder silo is lined with ceramic wear-resistant plates.

3. The powder transfer silo according to claim 1, characterized in that, The dust collector on the top of the silo is a pulse-jet bag filter, with PTFE-coated polyester filter bags inside.

4. The powder transfer silo according to claim 1, characterized in that, The feeding screw includes a horizontal section and an inclined section, with the angle between the inclined section and the horizontal section being 30-45°. The blade surface of the feeding screw is coated with a tungsten carbide wear-resistant coating.

5. A powder transfer silo according to claim 1, characterized in that, The bulk loader is a telescopic bulk loader, and a gravity sensor is installed at the outlet, which is interlocked with the drive motor of the feeding screw.

6. A powder transfer silo according to claim 1, characterized in that, The high-pressure blower is a centrifugal high-pressure blower with a rated air volume of 8000-12000 m³ / h. 3 / h, working pressure 12-18kPa, the high-pressure blower uses an aluminum alloy impeller and has been dynamically balanced.

Images