Off-line cleaning device for scale on filter plate of rotary table filter
An offline cleaning device consisting of high-frequency heating and vibration mechanisms solves the problem of scale buildup on the filter plates of a rotary table filter, achieving efficient and low-cost filter plate cleaning, reducing the risk of equipment damage, and improving filtration efficiency.
Patent Information
- Application Number
- CN202520387355.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In existing wet-process phosphoric acid production, scaling on the filter plates of rotary table filters leads to a decrease in filtration efficiency. Commonly used cleaning methods are inefficient, costly, environmentally unfriendly, and can easily damage the equipment.
An offline cleaning device consisting of high-frequency heating, cooling, and vibration mechanisms uses heating to create gaps and vibration to remove scale, avoiding chemical cleaning and reducing the risk of equipment damage.
Achieve efficient and low-cost filter plate cleaning, reduce equipment damage, alleviate environmental pressure, improve filtration efficiency, and lower cleaning costs.
Smart Images
Figure CN223861516U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of wet-process phosphoric acid production technology, especially to a filter plate fouling off-line cleaning device of rotary table filter. BACKGROUND
[0002] In the wet-process phosphoric acid production, the filter plate of rotary table or rotary disc filter is easy to form dense fouling (such as potassium, sodium, calcium salt, fluorosilicic acid and other hard fouling) on the surface due to long-term contact with high solid content slurry, resulting in reduced filtration efficiency or even shutdown.
[0003] The current cleaning methods have the following defects: 1. Manual mechanical cleaning: the filter plate needs to be disassembled, and workers use a shovel or a high-pressure water gun to clean manually, which is low in efficiency, high in labor intensity, and has safety hazards. Knocking can cause deformation and failure of the filter plate; 2. Online chemical cleaning: acid or alkaline cleaning agent needs to be injected, which is high in cost and may corrode the equipment. The cleaning waste liquid needs to be treated additionally; 3. Traditional high-pressure water jet cleaning: the dead angle fouling cannot be completely removed during online cleaning, and the water flow impact can damage the filter plate.
[0004] The above cleaning methods generally have the problems of being unfriendly to the environment, incomplete cleaning, high cost, and easy deformation. UTILITY MODEL CONTENTS
[0005] In order to solve the above problems in the prior art, the utility model provides a filter plate fouling off-line cleaning device of rotary table filter.
[0006] The filter plate fouling off-line cleaning device of rotary table filter provided by the utility model adopts the following technical scheme:
[0007] A filter plate fouling off-line cleaning device of rotary table filter, comprising a high-frequency heating mechanism for heating the filter plate, a cooling mechanism for cooling the filter plate, and a high-frequency vibration mechanism for vibrating the filter plate. The high-frequency heating mechanism, the cooling mechanism, and the high-frequency vibration mechanism are arranged in a flow line form.
[0008] By adopting the above technical scheme, the filter plate is heated by the high-frequency heating mechanism, a gap is generated between the filter plate and the fouling material due to the expansion difference, the filter plate is cooled by the cooling mechanism, and then high-efficiency cleaning is realized by the high-frequency vibration mechanism. Dry base operation is adopted, no sewage is generated, filter plate warping deformation is avoided, no chemical cleaning agent is used, and environmental protection pressure and maintenance cost are reduced.
[0009] Optionally, the high-frequency heating mechanism comprises a heating coil, the filter plate is placed in the heating coil, and the heating coil is electrically connected with a controller one.
[0010] By adopting the above technical scheme, the combination of the heating coil and the controller one is stable in performance and convenient to operate, and the filter plate can be heated conveniently.
[0011] Optionally, the high-frequency heating device further comprises a temperature sensor installed on the filter plate, and the temperature sensor is electrically connected with the controller.
[0012] By adopting the technical scheme, the heating temperature and the heating time can be accurately controlled.
[0013] Optionally, the cooling mechanism comprises a cooling support for lifting the filter plate and a cooling fan for air cooling the filter plate.
[0014] By adopting the technical scheme, the cooling support lifts the filter plate, and the cooling fan air cools the filter plate, so that the cooling mechanism is simple and efficient in operation and uniform in cooling.
[0015] Optionally, the cooling support comprises a supporting leg and a supporting net plate installed on the supporting leg, and the filter plate is placed on the top of the supporting net plate, and the cooling fan is installed on the bottom of the supporting net plate.
[0016] By adopting the technical scheme, the cooling fan blows air upward to cool the filter plate above, and the cooling support has a reasonable structure and is convenient for installation and use of the cooling fan.
[0017] Optionally, the high-frequency vibration mechanism comprises a vibration exciter, and parallelly installed upper and lower clamping plates are installed on the vibration exciter, vertical fastening screws are installed on the upper clamping plate, the filter plate is placed between the upper and lower clamping plates and is fixed by the fastening screws, and the vibration exciter is electrically connected with a second controller.
[0018] By adopting the technical scheme, the filter plate is effectively fixed between the upper and lower clamping plates, and is convenient for efficient vibration operation.
[0019] Optionally, the high-frequency vibration mechanism comprises a vibration sensor installed on the filter plate, and the vibration sensor is electrically connected with the second controller.
[0020] By adopting the technical scheme, the vibration amplitude and the vibration time can be accurately controlled.
[0021] Optionally, the vibration exciter is provided with a buffer element at the bottom.
[0022] By adopting the technical scheme, the adverse effects on the foundation and the energy loss in the vibration process are reduced.
[0023] In summary, the utility model has at least one of the following beneficial technical effects:
[0024] The cleaning device is used offline, and the vibration does not affect other components of the rotary filter equipment, and the portable advantage can reduce the filter plate carrying and transfer cost;
[0025] The dry cleaning is dry-based, and the scaling material is convenient for secondary use;
[0026] Without using cleaning agent, auxiliary agent, acid, alkali and other solvents, cleaning cost is reduced, and cleaning efficiency of the filter plate is effectively improved, and risk of damage to the surface of the filter plate is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a structure schematic diagram of a filter plate fouling offline cleaning device of a rotary table filter of an embodiment of the present utility model.
[0028] Figure 2 is a structure schematic diagram of a high-frequency heating mechanism of an embodiment of the present utility model.
[0029] Figure 3 is a structure schematic diagram of a cooling mechanism of an embodiment of the present utility model.
[0030] Figure 4 is a structure schematic diagram of a high-frequency vibration mechanism of an embodiment of the present utility model.
[0031] The reference signs are explained as follows: 1, filter plate; 2, high-frequency heating mechanism; 20, heating coil; 21, controller one; 22, temperature sensor; 3, cooling mechanism; 30, cooling support; 300, support leg; 301, support net plate; 31, cooling fan; 4, high-frequency vibration mechanism; 40, exciter; 41, upper clamping plate; 42, lower clamping plate; 43, fastening screw; 44, buffer element; 45, controller two; 46, vibration sensor. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings Figure 1 - the drawings Figure 4 The present utility model will be further explained in detail.
[0033] An embodiment of the present utility model discloses a filter plate fouling offline cleaning device of a rotary table filter. Figure 1 , the filter plate fouling offline cleaning device of the rotary table filter, comprising a high-frequency heating mechanism 2 for heating the filter plate 1, a cooling mechanism 3 for cooling the filter plate 1 and a high-frequency vibration mechanism 4 for vibrating the filter plate 1.
[0034] Referring to Figure 2 , the high-frequency heating mechanism 2 can be provided with 1-2, which comprises a heating coil 20 made of conductive material, the heating coil 20 can be adapted to different specifications and different areas of the filter plate 1. The filter plate 1 is provided in the heating coil 20, and the heating coil 20 is electrically connected with the controller one 21 at both ends, and the controller one 21 comprises a frequency time set calculator. The temperature sensor 22 is placed on the filter plate 1, and the temperature sensor 22 is electrically connected with the controller one 21, and the controller one 21 can adjust the heating temperature, the heating range and the heating time.
[0035] Referring to Figure 3The cooling mechanism 3 includes a cooling bracket 30 and a cooling fan 31. The cooling bracket 30 includes multiple legs 300 and a support mesh plate 301 horizontally mounted on top of the multiple legs 300. The legs 300 can be configured with adjustable height. The filter plate 1 is placed on top of the support mesh plate 301, and the cooling fan 31 is installed at the bottom of the support mesh plate 301. It can be controlled by a remote control to blow air upwards to cool the filter plate 1 and prevent it from deforming.
[0036] Reference Figure 4 The high-frequency vibration mechanism 4 includes an exciter 40. An upper clamping plate 41 and a lower clamping plate 42 are arranged parallel to each other at the bottom of the exciter 40. Multiple fastening screws 43 are vertically installed on the upper clamping plate 41. The filter plate 1 is placed between the upper clamping plate 41 and the lower clamping plate 42 and is secured by the fastening screws 43. A buffer element 44, such as one containing a spring, is installed below the lower clamping plate 42 to prevent vibration force from being transmitted to the ground or foundation, thus avoiding energy loss and adverse effects.
[0037] Reference Figure 4 The vibrator 40 is electrically connected to a controller 45, which includes an amplitude adjustment module and a vibration time adjustment module. The amplitude can be set between 0.5-5 mm, and the vibration time can be set according to the difficulty of cleaning scale. A vibration sensor 46 is installed on the filter plate 1, and the vibration sensor 46 is electrically connected to the controller 45.
[0038] The implementation principle of the rotary table filter plate scaling offline cleaning device of this utility model embodiment is as follows: S1. Stop the rotary table filter and disconnect the main power supply; S2. Remove the filter cloth, remove the filter plate 1 and mark it; S3. Install the high-frequency heating mechanism 2, cooling mechanism 3 and high-frequency vibration mechanism 4 around the filter, and install them in a position that facilitates the transfer and temporary storage of the filter plate 1; S4. Place a single filter plate 1 in the heating coil 20 and adjust the heating temperature and time; S5. Place the single filter plate 1 on the cooling bracket 30, start the cooling fan 31, and turn off the cooling fan 31 when the temperature is detected to be below 25°C; S6. Fix the single filter plate 1 between the upper clamping plate 41 and the lower clamping plate 42, set the amplitude and time, check the cleaning effect after one vibration cycle, and adjust the vibration time or vibration cycle as needed; S7. Repeat S4-S6 to clean other filter plates 1; S8. Retrieve the device and clean up the site.
[0039] The cleaning device of this utility model adopts a high-frequency heating mechanism 2 with controllable time and temperature. It has low power, fast heating and short time. Other portable rapid heating methods can also be used. The purpose is to take advantage of the difference in linear expansion coefficient between the metal material and the scale component to expand and contract, creating gaps between the two, which greatly reduces the bonding force between the scale and the filter plate 1. Since the thermal expansion of the filter plate 1 is free expansion and the heating temperature is much lower than the yield temperature of the metal material of the filter plate 1, it will not cause permanent expansion, deformation or warping of the filter plate 1.
[0040] The cleaning device uses a cooling mechanism 3 to cool the filter plate 1. The filter plate 1 is tightly attached to the support mesh plate 301. During the cooling process, the filter plate 1 will not deform due to its own weight and temperature. A normal temperature air fan is used for cooling, so the cooling is uniform and the filter plate 1 is not deformed.
[0041] The cleaning device adopts a high-frequency vibration mechanism 4, which features low-amplitude, high-frequency vibration, making it energy-efficient and highly effective. The amplitude can be adjusted within a small range, making it suitable for a wide range of applications, including scaling. The vibration time can be adjusted to handle different filter plates 1, offering flexible adjustment and strong adaptability. The buffer element 44 effectively prevents any impact on the foundation and structure.
[0042] The cleaning device is used offline, avoiding the impact of vibration on other components of the rotary table filter equipment. Its portability reduces the cost of handling and transporting filter plate 1. The dry cleaning process removes scale material that is dry, making it easy to reuse. Compared with existing technologies, it eliminates the need for cleaning agents, additives, acids, alkalis, and other solvents, reducing cleaning costs and effectively improving the cleaning efficiency of filter plate 1 while reducing the risk of damage to the surface of filter plate 1.
[0043] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. An offline cleaning device for scale buildup on filter plates of a rotary table filter, characterized in that: It includes a high-frequency heating mechanism (2) for heating the filter plate (1), a cooling mechanism (3) for cooling the filter plate (1), and a high-frequency vibration mechanism (4) for vibrating the filter plate (1). The high-frequency heating mechanism (2), the cooling mechanism (3), and the high-frequency vibration mechanism (4) are arranged sequentially in a production line manner.
2. The offline cleaning device for scale buildup on the filter plates of a rotary table filter as described in claim 1, characterized in that: The high-frequency heating mechanism (2) includes a heating coil (20), a filter plate (1) is placed inside the heating coil (20), and the heating coil (20) is electrically connected to a controller (21).
3. The offline cleaning device for scale buildup on the filter plates of a rotary table filter as described in claim 2, characterized in that: The high-frequency heating device also includes a temperature sensor (22) installed on the filter plate (1), and the temperature sensor (22) is electrically connected to the controller (21).
4. The offline cleaning device for scale buildup on the filter plates of a rotary table filter as described in claim 1, characterized in that: The cooling mechanism (3) includes a cooling bracket (30) for supporting the filter plate (1) and a cooling fan (31) for the air-cooled filter plate (1).
5. The offline cleaning device for scale buildup on the filter plates of a rotary table filter as described in claim 2, characterized in that: The cooling bracket (30) includes a support leg (300) and a support mesh plate (301) mounted on the support leg (300). The filter plate (1) is placed on top of the support mesh plate (301), and the cooling fan (31) is mounted on the bottom of the support mesh plate (301).
6. The offline cleaning device for scale buildup on the filter plates of a rotary table filter as described in claim 1, characterized in that: The high-frequency vibration mechanism (4) includes a vibrator (40), an upper clamping plate (41) and a lower clamping plate (42) are mounted in parallel on the vibrator (40), a fastening screw (43) is mounted vertically on the upper clamping plate (41), a filter plate (1) is placed between the upper clamping plate (41) and the lower clamping plate (42) and is fixed by the fastening screw (43), and the vibrator (40) is electrically connected to a controller (45).
7. The rotary table filter plate scaling offline cleaning device according to claim 6, characterized in that: The high-frequency vibration mechanism (4) includes a vibration sensor (46) mounted on the filter plate (1), and the vibration sensor (46) is electrically connected to the controller (45).
8. The rotary table filter plate scaling offline cleaning device according to claim 6 or 7, characterized in that: A buffer element (44) is provided at the bottom of the vibrator (40).