A belt filter and a discharge device for a belt filter

Abstract

The utility model discloses a belt filter's unloading device and belt filter, and the device includes gravity unloading device, is arranged in the end of belt filter, and the filter cloth of end of belt filter is bent and is folded preset angle, purging device is arranged in the filter cloth inboard of belt filter end, and the filter cloth is purged, spray washing device is arranged in the filter cloth outside of belt filter end, and the filter cloth is cleaned. The unloading device of the utility model increases gravity unloading device, purging device, spray washing device on belt filter, makes it have the efficient cleaning capacity of fine material, sticky material, can overcome the defect that traditional cleaning device is difficult to clean fine material, sticky material in the filter cloth surface or filter hole.

Description

Technical Field

[0001] This utility model relates to the field of filtration and separation, specifically to a discharge device for a belt filter and a belt filter itself. Background Technology

[0002] Belt filters offer advantages such as high filtration efficiency, large production capacity, excellent washing effect, low filter cake moisture content, flexible operation, and low maintenance costs, making them widely used in metallurgy, mining, and chemical industries. Belt filters perform solid-liquid separation on roasted clinker slurry. However, during unloading operations, issues such as improper gaps between the scraper and guide rollers, scraper wear, and friction from foreign objects can damage the filter cloth or result in incomplete washing, ultimately affecting the filter cloth's lifespan or the solid-liquid separation effect. Utility Model Content

[0003] In view of this, in order to overcome at least one of the above problems, this utility model provides a discharge device, comprising: A gravity unloading device is installed at the end of the belt filter and bends the filter cloth at the end of the belt filter at a preset angle. A purging device is installed inside the filter cloth at the end of the belt filter to purge the filter cloth. A spray washing device is installed on the outside of the filter cloth at the end of the belt filter to clean the filter cloth.

[0004] In some embodiments, the gravity unloading device bends the filter cloth at a preset angle of 120° to 160°.

[0005] In some embodiments, the gravity unloading device includes at least two sets of drive rollers.

[0006] In some embodiments, the purging device includes at least one jet nozzle, the jet direction of which forms an angle of 30° to 60° with the surface of the filter cloth.

[0007] In some embodiments, the jet nozzle is an adjustable jet nozzle.

[0008] In some embodiments, the purging device is connected to an air compressor that can provide compressed air.

[0009] In some embodiments, the spray washing device includes a plurality of nozzles arranged in a matrix on the outside of the filter cloth.

[0010] In some embodiments, the nozzle is a fan-shaped nozzle with a spray angle of 90° to 120°.

[0011] In some embodiments, the spraying device is connected to a water pump and a water tank, and the water pump can deliver the cleaning fluid in the water tank to the spray nozzle.

[0012] This utility model has one of the following beneficial technical effects: The unloading device proposed in this utility model adds a gravity unloading device, a blowing device, and a spray washing device to the belt filter, giving it a highly efficient cleaning capability for fine and sticky materials. This overcomes the shortcomings of traditional cleaning devices in cleaning fine and sticky materials adhering to the filter cloth surface or filter pores. Through specific design and technological innovation, this high-efficiency cleaning device can achieve a more thorough cleaning effect, improve cleaning efficiency and quality, thereby optimizing the performance and stability of the operating equipment. It also has advantages such as low cost, convenient maintenance, and easy use. It not only improves the effective operating rate of the belt filter and reduces product quality accidents during the production process, but also reduces the labor intensity of personnel, lowers usage risks, and effectively protects the equipment. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0014] Figure 1 A structural diagram of the unloading device provided in an embodiment of this utility model; Figure 2 A structural diagram of the purging device provided in an embodiment of this utility model; Figure 3 This is a structural diagram of the spray washing device provided in an embodiment of the present invention. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0016] According to one aspect of the present invention, an embodiment of the present invention provides a unloading device, such as... Figure 1 As shown, it may include: A gravity unloading device is installed at the end of the belt filter and bends the filter cloth at the end of the belt filter at a preset angle. A purging device is installed inside the filter cloth at the end of the belt filter to purge the filter cloth. A spray washing device is installed on the outside of the filter cloth at the end of the belt filter to clean the filter cloth.

[0017] The unloading device proposed in this utility model adds a gravity unloading device, a purging device, and a spray washing device to the belt filter, giving it a highly efficient cleaning capability for fine and sticky materials. This overcomes the shortcomings of traditional cleaning devices in cleaning fine and sticky materials adhering to the filter cloth surface or filter pores. Through specific design and technological innovation, this high-efficiency cleaning device achieves a more thorough cleaning effect, improving cleaning efficiency and quality, thereby optimizing the performance and stability of the operating equipment. It also has advantages such as low cost, convenient maintenance, and ease of use. It not only improves the effective operating rate of the belt filter and reduces product quality accidents during the production process, but also reduces the labor intensity of personnel, lowers usage risks, and effectively protects the equipment.

[0018] In some embodiments, the gravity unloading device bends the filter cloth at a preset angle of 120° to 160°.

[0019] In some embodiments, the gravity unloading device includes at least two sets of drive rollers.

[0020] Specifically, such as Figure 1 As shown, when the roasted clinker slurry is driven by a rubber belt, it passes through a belt filter during transmission. The slag travels with the filter cloth to the end of the belt filter, while the filtrate enters the vacuum receiving tank and the filtrate tank. Under the action of the gravity unloading device, the filter cloth is bent to a preset angle, and most of the slag naturally slides off under gravity, achieving initial unloading. This eliminates the need for a scraper and avoids wear on the filter cloth. This process requires no additional power, reducing energy consumption and potential failure points, and improving unloading reliability. Thus, by placing the gravity unloading device at the end of the belt filter, its main function is to bend the filter cloth at the end of the belt filter at a preset angle, thereby utilizing gravity to achieve efficient unloading.

[0021] The device includes at least two sets of drive rollers. By rationally arranging the position and angle of these rollers, precise control of the filter cloth bending angle can be achieved. Extensive experiments and practical verification have shown that setting the preset bending angle of the filter cloth to 120°~160° yields the best unloading effect. Within this angle range, most of the residue on the filter cloth can naturally slide off under gravity, reducing the pressure of residual residue on subsequent cleaning processes. It also avoids problems such as incomplete unloading or excessive stretching and damage to the filter cloth caused by excessively large or small bending angles.

[0022] The drive roller assembly can be made of high-strength, wear-resistant materials, such as high-quality alloy steel, to ensure that it can withstand the friction of the filter cloth and the impact of materials during long-term operation and maintain a stable working state. The surface of the drive roller assembly is specially treated to increase the friction between it and the filter cloth, preventing the filter cloth from slipping during transmission and ensuring the stability and continuity of unloading.

[0023] In some embodiments, the purging device includes at least one jet nozzle, the jet direction of which forms an angle of 30° to 60° with the surface of the filter cloth.

[0024] In some embodiments, the jet nozzle is an adjustable jet nozzle.

[0025] In some embodiments, the purging device is connected to an air compressor that can provide compressed air.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, the purging device is located on the inner side of the filter cloth at the end of the belt filter. The inner side of the filter cloth refers to the side without filter residue. By purging the filter cloth, fine and sticky materials adhering to the outer surface or filter pores can be removed. The device includes at least one air nozzle, with the airflow direction forming an angle of 30° to 60° with the filter cloth surface. This angle range allows the compressed air to act on the filter cloth with optimal impact force, effectively blowing off material without causing excessive damage to the filter cloth.

[0027] The jet nozzle features an adjustable design, allowing operators to flexibly adjust its angle and jet pressure according to actual conditions, such as the viscosity of the material and the material of the filter cloth. The purging device is connected to an air compressor, which provides a stable supply of compressed air. By appropriately setting the air compressor's operating parameters, such as pressure and flow rate, the stability and reliability of the purging effect are ensured. A filter and pressure regulating device are also installed between the air compressor and the jet nozzle. The filter removes impurities from the compressed air, preventing secondary contamination of the filter cloth; the pressure regulating device precisely adjusts the jet pressure according to actual needs, further improving the purging effect.

[0028] In some embodiments, the spray washing device includes a plurality of nozzles arranged in a matrix on the outside of the filter cloth.

[0029] In some embodiments, the nozzle is a fan-shaped nozzle with a spray angle of 90° to 120°.

[0030] In some embodiments, the spraying device is connected to a water pump and a water tank, and the water pump can deliver the cleaning fluid in the water tank to the spray nozzle.

[0031] Specifically, such as Figure 3As shown, the spray washing device is located on the outer side of the filter cloth at the end of the belt filter. The outer side of the filter cloth refers to the side with filter cake on its surface, allowing for deep cleaning. The device includes multiple nozzles arranged in a matrix on the outer side of the filter cloth. This arrangement ensures that every area of ​​the filter cloth is cleaned uniformly. The nozzles are fan-shaped, with a spray angle of 90°~120°, allowing them to spray perpendicularly to the filter cloth surface. The fan-shaped nozzles create a large coverage area for the cleaning solution, improving cleaning efficiency. The filter cloth washing water is collected through a drip tray.

[0032] The spray washing device is connected to a water pump and a water tank. The water pump delivers the cleaning solution from the tank to the spray nozzles. An appropriate amount of cleaning agent can be added to the tank according to the properties of the material to enhance the cleaning effect on sticky materials. A flow rate adjustment device and a pressure adjustment device are installed between the water pump and the spray nozzles. Operators can flexibly adjust the flow rate and pressure of the cleaning solution according to the degree of contamination of the filter cloth and the cleaning requirements, achieving efficient cleaning while avoiding damage to the filter cloth due to excessive cleaning solution pressure.

[0033] Multiple fan-shaped nozzles can be installed in a matrix arrangement on the pipeline, which is made of corrosion-resistant materials such as PVC or stainless steel. A sealed connection is used between the pipeline and the nozzles to prevent cleaning fluid leakage. The pipeline connects the water pump and tank to the spraying device, and flow and pressure regulating devices are installed on the pipeline. The flow regulating device uses a flow control valve, and the pressure regulating device uses a pressure regulating valve, allowing for flexible adjustment of the cleaning fluid flow and pressure according to cleaning needs.

[0034] This invention proposes a discharge device that adds a gravity discharge device, a purging device, and a spray washing device to a belt filter, enabling it to efficiently clean fine and sticky materials. This overcomes the shortcomings of traditional cleaning devices, which struggle to remove fine and sticky materials adhering to the filter cloth surface or filter pores. Through specific design and technological innovation, this high-efficiency cleaning device achieves a more thorough cleaning effect, improving cleaning efficiency and quality, thereby optimizing the performance and stability of the operating equipment. It also boasts advantages such as low cost, convenient maintenance, and ease of use. This not only improves the effective operating rate of the belt vacuum filter and reduces product quality accidents during production, but also reduces the labor intensity of personnel, lowers usage risks, and effectively protects the equipment. Simultaneously, the purging and spray washing devices, through reasonable parameter settings, effectively remove materials without causing excessive damage to the filter cloth, thus extending its service life and reducing production costs. Furthermore, it is not limited by a single material or process; the design dimensions and manufacturing materials can be adjusted as needed, meeting the transportation requirements of different models or similar structures of materials, and has broad prospects for application in the filtration and separation field.

[0035] The above are exemplary embodiments disclosed in this utility model. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this utility model as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this utility model may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0036] It should be understood that, as used herein, the singular form “a” is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, “and / or” refers to any and all possible combinations of one or more of the associated listed items.

[0037] The embodiment numbers disclosed in the above-described embodiments of the present utility model are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples. Within the framework of the present invention, technical features of the above embodiments or different embodiments can also be combined, and many other variations of different aspects of the present invention exist, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A discharge device for a belt filter, characterized in that include: A gravity unloading device is installed at the end of the belt filter and bends the filter cloth at the end of the belt filter at a preset angle. A purging device is installed inside the filter cloth at the end of the belt filter to purge the filter cloth. A spray washing device is installed on the outside of the filter cloth at the end of the belt filter to clean the filter cloth.

2. The apparatus of claim 1, wherein, The gravity unloading device bends the filter cloth at a preset angle of 120°~160°.

3. The apparatus of claim 1, wherein, The gravity unloading device includes at least two sets of drive rollers.

4. The apparatus of claim 1, wherein, The purging device includes at least one air nozzle, and the air jet direction of the air nozzle forms an angle of 30° to 60° with the surface of the filter cloth.

5. The apparatus of claim 4, wherein, The jet nozzle is an adjustable jet nozzle.

6. The apparatus of claim 4, wherein, The purging device is connected to an air compressor, which can provide compressed air.

7. The apparatus of claim 1, wherein, The spray washing device includes multiple nozzles, which are arranged in a matrix on the outside of the filter cloth.

8. The apparatus of claim 7, wherein, The nozzle is a fan-shaped nozzle with a spray angle of 90° to 120°.

9. The apparatus of claim 8, wherein, The spray washing device is connected to a water pump and a water tank. The water pump can deliver the cleaning solution in the water tank to the spray nozzle.

10. A belt filter characterized in that Includes the apparatus as described in any one of claims 1-9.

Images