Self-adaptive cleaning device for discharge roller of belt filter press

Abstract

The utility model discloses a self-adaptive cleaning device for a discharge roller of a belt filter press, and belongs to the technical field of filter pressing equipment. According to the self-adaptive cleaning device for the discharge roller of the belt filter press, the sludge scraping plate is arranged on the filter belt on the roller surface of the discharge roller, the working end of the sludge scraping plate clings to the front surface of the filter belt in a self-adaptive manner, the self-adaptive cling can be realized through the elastic sheet or other elastic components, and the fixed end of the sludge scraping plate is hinged to the support frame. When the surface of the filter belt is uneven and bumps protrude, the elastic component elastically retracts to pull the mud scraping plate away from the original position, so that the bumps can smoothly pass through without tearing the filter belt. The technical problems that in the working process of the belt filter press, sludge falls on the non-working face of the filter belt, runs to the discharging roller along with the filter belt and is adhered to the surface of the roller to form bumps and protrusions, so that the filter belt is uneven, and the filter belt is torn by a sludge scraping plate are solved.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, and more specifically to an adaptive cleaning device for the discharge roller of a belt filter press. Background Technology

[0002] Belt filter presses are widely used in sludge dewatering treatment in industries such as metallurgy, coal washing, petroleum, chemical, textile printing and dyeing, electroplating, papermaking, leather, brewing, food processing, pharmaceuticals, and ceramics.

[0003] The discharge roller is the last pressure roller in a filter press before the filter cake is discharged. It is usually arranged in pairs, one above the other. Typically, the filter cake has a certain stickiness and adheres to the filter belt, affecting normal discharge. To solve this problem, a scraper is installed on the lower discharge roller. However, when there is running vibration or the wear gap increases, the scraper cannot adaptively adjust its tension in real time. This can result in incomplete scraping, affecting dewatering efficiency, or even the scraper jamming with the filter belt, damaging it. For example, some sludge may fall onto the non-working surface of the filter belt, travel with the belt to the discharge roller, and adhere to the roller surface, forming bulges and causing unevenness on the filter belt, which can then be torn by the scraper. Utility Model Content

[0004] 1. Technical problem to be solved by the utility model

[0005] To address the aforementioned problems with the discharge roller and scraper of existing belt filter presses, this utility model provides an adaptive cleaning device for the discharge roller of a belt filter press. By adaptively adjusting the tension of the scraper and the filter belt, the device aims to solve the problem of filter belt bulging being torn by the scraper.

[0006] 2. Technical Solution

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] An adaptive cleaning device for the discharge roller of a belt filter press is disclosed. The filter belt at the discharge end of the filter press wraps around the discharge roller. A scraper is installed on the filter belt on the roller surface. The working end of the scraper adaptively adheres to the front of the filter belt. This adaptive adhesion can be achieved through a spring or other elastic component. The fixed end of the scraper is hinged to a support frame. When encountering unevenness or bulges on the filter belt surface, the elastic component retracts elastically, pulling the scraper away from its original position, ensuring that the bulges pass through smoothly without tearing the filter belt.

[0009] A further technical solution involves a transverse spring rod that is fixedly connected to the outer side of the scraper blade. The fixed end of the spring rod is connected to the mounting bracket and is pressed by the spring, allowing for flexible and quantifiable operation.

[0010] Further technical solutions include a flushing pipe connected to the support frame, with flushing nozzles installed on the flushing pipe. Each flushing nozzle sprays water onto the back of the filter belt and the inner roller surface of the discharge roller. A water flushing device is added to flush the discharge roller, ensuring that the surface is clean and free of adhering material, thereby fundamentally solving the problem of filter belt bulging being damaged by the scraper.

[0011] A further technical solution is to adjust the clamping degree of the spring push rod, thereby improving its versatility.

[0012] A further technical solution is to make the outer side of the working end of the scraper beveled to avoid material accumulation.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0015] This utility model discloses an adaptive cleaning device for the discharge roller of a belt filter press. When encountering unevenness or bulges on the filter belt surface, the spring elastically retracts, pulling the scraper away from its original position, achieving a "jumping avoidance" mechanism. The device periodically checks and rotates the adjusting bolts to ensure the spring preload. A flushing water pipe is installed above the non-contact surface of the discharge roller to periodically flush the roller, ensuring a clean surface free of adhering material. A water collection tray is installed below to collect wastewater. This device ensures effective scraping by the scraper, improves the dewatering effect of the belt filter press, reduces filter belt consumption, and lowers production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the adaptive cleaning device for the discharge roller of a belt filter press, as shown in a specific embodiment.

[0017] In the diagram: 1. Discharge roller; 2. Filter belt; 3. Scraper; 4. Spring push rod; 5. Fixing frame; 6. Support frame; 7. Water receiving container; 8. Flushing pipe; 9. Material receiving container. Detailed Implementation

[0018] To further understand the contents of this utility model, a detailed description of the utility model is provided in conjunction with the accompanying drawings.

[0019] Example 1

[0020] In this embodiment, the filter belt 2 of the belt filter press discharge roller is self-adaptive cleaning device. The filter belt 2 at the discharge end of the filter press passes around the discharge roller 1. A scraper 3 is provided on the filter belt 2 on the roller surface of the discharge roller 1. The working end of the scraper 3 is self-adaptively attached to the front of the filter belt 2. The self-adaptive attachment can be achieved by a spring, a spring or other elastic component. The fixed end of the scraper 3 is hinged to the support frame 6.

[0021] The adaptive cleaning device for the discharge roller of the belt filter press in this embodiment, when encountering uneven surfaces on the filter belt 2, such as... Figure 1 When the bulge at point A is shown, the elastic component retracts elastically, pulling the scraper 3 away from its original position to ensure that the bulge passes through smoothly and does not tear the filter belt 2.

[0022] Example 2

[0023] The adaptive cleaning device for the discharge roller of the belt filter press in this embodiment has the same basic structure as in Embodiment 1, but differs or is improved in that it comprises a scraper 3, a spring push rod 4, a flushing pipe 8, and a water receiving container 7, forming the main equipment of the device. Figure 1 As shown, the outer side of the scraper blade 3 is fixedly connected to a transverse spring rod 4. The fixed end of the spring rod 4 is connected to the fixing frame 5. The scraper blade is tightened by a spring, allowing for flexible and quantifiable operation. The spring deformation enables adaptive adjustment of the tightness. The scraper blade 3 is made of wear-resistant and corrosion-resistant materials, not limited to stainless steel.

[0024] The flushing pipe 8 is connected to the support frame 6. The flushing pipe 8 is equipped with flushing nozzles, each spraying towards the back of the filter belt 2 and the inner surface of the discharge roller 1. The flushing nozzles use high-pressure fine water mist nozzles. A water flushing device is added to flush the discharge roller 1, ensuring a clean surface free of adhering material, thus fundamentally solving the problem of filter belt 2 bulging and being damaged by the scraper plate 3. The clamping degree of the spring top rod 4 is adjustable, improving its versatility. Adjustment is achieved by fixing adjusting bolts at both ends of the spring top rod 4 to the connection between the fixed frame 5 and the scraper plate 3. Depending on the scraping effect, rotating the adjusting bolts at both ends or one end of the spring top rod 4 provides the spring with appropriate preload. As the scraper plate wears and shortens, the spring releases preload, pushing the scraper plate 3 forward and re-clamping it to the filter belt 2. When encountering uneven surfaces or bulges on the filter belt 2, the spring elastically retracts, pulling the scraper plate 3 away from its original position, achieving "jumping avoidance" by the scraper plate 3. The adjusting bolts are periodically checked and rotated to ensure the spring preload. A flushing pipe is installed above the non-contact surface of the discharge roller 1 to rinse the discharge roller 1 regularly, ensuring that the surface is clean and free of adhering material. A water receiving container 7 is installed below it to collect wastewater. The outer side of the working end of the scraper 3 is inclined to form a free-fall surface for the filter cake, avoiding material accumulation. A material receiving container 9 is installed below it to collect the filter cake.

[0025] The adaptive cleaning device for the discharge rollers of the belt filter press in this embodiment can save an average of 0.5 filter belts per month per belt filter press after implementation. While effectively ensuring the scraping effect of the scraper, it improves the dewatering effect of the belt filter press, reduces the consumption of filter belts, and lowers production costs.

[0026] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention. The actual structure and manufacturing steps are not limited to these. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A self-adaptive cleaning device for the discharge roller of a belt filter press, wherein the filter belt (2) at the discharge end of the filter press passes around the discharge roller (1), characterized in that: A scraper (3) is installed on the filter belt (2) of the discharge roller (1). The working end of the scraper (3) is adaptively attached to the front of the filter belt (2), and the fixed end of the scraper (3) is hinged to the support frame (6).

2. The self-adaptive cleaning device for the discharge roller of a belt filter press according to claim 1, characterized in that: The outer side of the scraper (3) is fixedly connected to a transverse spring rod (4), and the fixed end of the spring rod (4) is connected to the fixing frame (5).

3. The self-adaptive cleaning device for the discharge roller of a belt filter press according to claim 1, characterized in that: It also includes a flushing pipe (8) connected to the support frame (6), the flushing pipe (8) is equipped with flushing nozzles, and each flushing nozzle sprays towards the back of the filter belt (2) and the inner roller surface of the discharge roller (1).

4. The self-adaptive cleaning device for the discharge roller of a belt filter press according to claim 2, characterized in that: The clamping degree of the spring top rod (4) is adjustable.

5. The self-adaptive cleaning device for the discharge roller of a belt filter press according to any one of claims 1-4, characterized in that: The outer side of the working end of the scraper (3) is inclined.

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