Filter press receiving hopper for kaolin production

Abstract

The utility model discloses a filter press receiving hopper for kaolin production. The length and the width of the upper part of a hopper body are consistent with those of the bottom of the filter press, and an included angle between a side plate of the hopper body and the horizontal plane is greater than a repose angle of a filter cake; the blade is arranged at the upper inlet of the bucket body; the double-shaft cake crushing spiral conveyor is arranged at the lower part of the hopper body, and the motor conveys power to the double-shaft cake crushing spiral conveyor; the double-shaft broken cake spiral conveyor comprises two parallel spiral shafts, spiral blades are arranged on the spiral shafts, four equidistant notches are formed in the spiral blades, and the two spiral shafts rotate inwards in the opposite directions. The filter cake pre-crushing device can pre-crush filter cakes and convey the filter cakes to the next procedure, so that the kaolin production efficiency and quality and the procedure connection fluency are improved.

Description

Technical Field

[0001] This utility model relates to the field of kaolin processing, specifically to a filter press receiving hopper for kaolin production. Background Technology

[0002] Kaolin is a type of clay and clay rock mainly composed of kaolinite group clay minerals, belonging to the category of non-metallic minerals. In the production of kaolin, solid-liquid separation is typically achieved using a filter press.

[0003] The existing filter press receiving hopper has functional limitations and cannot meet the needs of crushing and conveying filter cake. It also has poor connection with the equipment in subsequent processes, resulting in low efficiency and low quality in kaolin production. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and propose a filter press receiving hopper for kaolin production, which can pre-crush the filter cake and transport it to the next process, thereby improving the efficiency and quality of kaolin production and the smoothness of process connection.

[0005] To achieve the above objectives, the present invention proposes the following technical solution:

[0006] A filter press receiving hopper for kaolin production includes a hopper body, blades, a twin-shaft cake screw conveyor, and a motor. The upper length and width of the hopper body are consistent with the bottom of the filter press. The angle between the side plate of the hopper body and the horizontal plane is greater than the angle of repose of the filter cake, which facilitates the smooth discharge of the filter cake and prevents the filter cake from sticking to the side plate of the hopper.

[0007] The blade is located at the upper entrance of the bucket body for preliminary cutting of large filter cakes. The dual-shaft crushing screw conveyor is located at the lower part of the bucket body, and the motor supplies power to the dual-shaft crushing screw conveyor.

[0008] The dual-shaft crushing screw conveyor includes two parallel screw shafts, each equipped with a screw blade. The screw blade has four equidistant notches, and the two screw shafts rotate inwards towards each other to achieve shearing, crushing, and axial conveying.

[0009] Preferably, the root of the blade is welded to the inner wall of the hopper, the tip of the blade is set inward and upward, the cutting angle of the blade is fixed, and after the filter cake falls into the hopper inlet, the filter cake that touches the blade is cut into small pieces under its own gravity and the action of the blade, thereby achieving the initial cutting of large filter cake pieces.

[0010] Preferably, the hopper body is made of 304 stainless steel, which is wear-resistant and corrosion-resistant, to ensure the service life and stability of the receiving hopper.

[0011] Preferably, the angle between the side plate of the hopper and the horizontal plane is 65°, and the angle of repose of the filter cake is 60°.

[0012] Preferably, the side plate of the hopper is provided with hopper reinforcing ribs to increase the rigidity and flatness of the side plate and prevent it from being deformed by the filter cake.

[0013] Preferably, the motor is a variable frequency motor, which synchronously drives two spiral shafts through a gearbox, and can adjust the conveying volume and filter cake crushing size according to process requirements.

[0014] Preferably, the notch of the spiral blade is trapezoidal, and the edges are chamfered to reduce the resistance of the crushed cake.

[0015] Preferably, the notch depth of the helical blade is 1 / 3 of the blade width, and the notch edge is rounded and polished.

[0016] Preferably, the system also includes a PLC controller and a torque sensor. The PLC controller is connected to the variable frequency motor, and the torque sensor is installed at the non-drive end of the two screw shafts. Flexible couplings are installed before and after the torque sensor. The torque sensor is connected to the input end of the PLC controller. The PLC controller dynamically adjusts the speed of the variable frequency motor according to the feedback signal of the torque sensor, thereby significantly improving the automation level and reliability of the filter press receiving hopper.

[0017] When the torque exceeds the threshold, such as when the filter cake is too hard, the PLC controller reduces the speed of the screw shaft. If the torque decreases, the machine continues to operate. If the torque does not decrease for a period of time, a stop command is sent to the variable frequency motor. This can reduce the overload failure rate to a certain extent and improve the uniformity of filter cake crushing.

[0018] Specifically, large filter cakes fall into the upper inlet of the hopper and are cut into smaller pieces by their own gravity and the action of the blades, achieving the initial cutting of the large filter cakes. Then, they fall into the twin-shaft crushing screw conveyor, where the two screw shafts rotate inwards towards each other to achieve shearing, crushing and axial conveying. Finally, they are output from the outlet and conveyed to the next process.

[0019] There may be debris accumulating at the blade. Staff can clean the blade area periodically to prevent blockages from affecting normal operation.

[0020] The beneficial effects of this utility model are as follows:

[0021] This invention features blades on the upper part of the bucket and a dual-shaft crushing screw conveyor on the lower part of the bucket. This enables the initial cutting, shearing, crushing, and axial conveying of the filter cake, transporting the crushed filter cake to the next process. This improves the efficiency and quality of kaolin production, as well as the smoothness of process connections. It also results in a more uniform particle size of the crushed filter cake, which is beneficial for improving the quality and stability of subsequent products.

[0022] This invention uses a variable frequency motor to synchronously drive two spiral shafts, which can adjust the conveying volume and filter cake crushing size according to process requirements, thereby optimizing the production process, reducing energy consumption and production costs. It is also suitable for processing filter cakes of different types and particle sizes, and has strong adaptability and flexibility.

[0023] This invention uses torque sensors installed at the non-drive ends of the two spiral shafts to accurately capture load changes in the dual-shaft crushing screw conveyor, providing key control parameters to the PLC controller. This significantly improves the automation level and reliability of the filter press receiving hopper, while reducing the overload failure rate and increasing the uniformity of filter cake crushing.

[0024] By adopting the above solution, this utility model can pre-crush the filter cake and transport it to the next process, thereby improving the efficiency and quality of kaolin production and the smoothness of process connection. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a side view of the structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0028] In the diagram, 1-filter press, 2-blade, 3-hopper reinforcing rib, 4-hopper shell, 5-twin-shaft cake screw conveyor, 6-motor. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] First embodiment:

[0034] like Figures 1-2 As shown, a filter press receiving hopper for kaolin production includes a hopper body, blades 2, a twin-shaft crushing cake screw conveyor 5, and a motor 6. The length and width of the upper part of the hopper body are consistent with the bottom of the filter press 1. The angle between the side plate 4 of the hopper body and the horizontal plane is greater than the angle of repose of the filter cake, which facilitates the smooth discharge of the filter cake and prevents the filter cake from sticking to the side plate 4 of the hopper.

[0035] The blade 2 is located at the upper entrance of the bucket body and is used for preliminary cutting of large filter cakes. The dual-shaft crushing screw conveyor 5 is located at the lower part of the bucket body, and the motor 6 supplies power to the dual-shaft crushing screw conveyor 5.

[0036] The dual-shaft crushing screw conveyor 5 includes two parallel screw shafts, each with a screw blade. The screw blade has four equidistant notches, and the two screw shafts rotate inwards towards each other to achieve shearing, crushing, and axial conveying.

[0037] Second embodiment:

[0038] like Figures 1-2 As shown, a filter press receiving hopper for kaolin production includes a hopper body, blades 2, a twin-shaft crushing cake screw conveyor 5, and a motor 6. The length and width of the upper part of the hopper body are consistent with the bottom of the filter press 1. The angle between the side plate 4 of the hopper body and the horizontal plane is greater than the angle of repose of the filter cake, which facilitates the smooth discharge of the filter cake and prevents the filter cake from sticking to the side plate 4 of the hopper.

[0039] The blade 2 is located at the upper entrance of the bucket body and is used for preliminary cutting of large filter cakes. The dual-shaft crushing screw conveyor 5 is located at the lower part of the bucket body, and the motor 6 supplies power to the dual-shaft crushing screw conveyor 5.

[0040] The dual-shaft crushing screw conveyor 5 includes two parallel screw shafts, each with a screw blade. The screw blade has four equidistant notches, and the two screw shafts rotate inwards towards each other to achieve shearing, crushing, and axial conveying.

[0041] The motor 6 is a variable frequency motor, which synchronously drives two spiral shafts through a gearbox, and can adjust the conveying volume and filter cake crushing size according to process requirements.

[0042] It also includes a PLC controller and a torque sensor. The PLC controller is connected to the variable frequency motor, and the torque sensor is installed on the non-drive end of the two screw shafts. Flexible couplings are installed before and after the torque sensor. The torque sensor is connected to the input end of the PLC controller. The PLC controller dynamically adjusts the speed of the variable frequency motor according to the feedback signal of the torque sensor, thereby significantly improving the automation level and reliability of the filter press receiving hopper.

[0043] When the torque exceeds the threshold, such as when the filter cake is too hard, the PLC controller reduces the speed of the screw shaft. If the torque decreases, the machine continues to operate. If the torque does not decrease for a period of time, a stop command is sent to the variable frequency motor. This can reduce the overload failure rate to a certain extent and improve the uniformity of filter cake crushing.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter press receiving hopper for kaolin production, comprising a hopper body, characterized in that: It also includes blades, a twin-shaft cake crushing screw conveyor, and a motor. The length and width of the upper part of the hopper are consistent with the bottom of the filter press, and the angle between the side plate of the hopper and the horizontal plane is greater than the angle of repose of the filter cake. The blades are located at the upper inlet of the hopper. The twin-shaft cake crushing screw conveyor is located at the lower part of the hopper, and the motor supplies power to the twin-shaft cake crushing screw conveyor. The twin-shaft cake crushing screw conveyor includes two parallel screw shafts, each with a screw blade. The screw blades have four equidistant notches, and the two screw shafts rotate inwards towards each other.

2. The filter press receiving hopper for kaolin production according to claim 1, characterized in that: The root of the blade is welded to the inner wall of the bucket, the tip of the blade is set inward and upward, and the cutting angle of the blade is fixed.

3. The filter press receiving hopper for kaolin production according to claim 1, characterized in that: The bucket body is made of 304 stainless steel.

4. The filter press receiving hopper for kaolin production according to claim 1, characterized in that: The angle between the side plate of the bucket body and the horizontal plane is 65°.

5. A filter press receiving hopper for kaolin production according to claim 1, characterized in that: The hopper body has reinforcing ribs on the outside of the side plate.

6. A filter press receiving hopper for kaolin production according to claim 1, characterized in that: The motor is a variable frequency motor, which synchronously drives two helical shafts through a gearbox; it also includes a PLC controller and a torque sensor. The PLC controller is connected to the variable frequency motor, and the torque sensor is installed on the non-driving end of the two helical shafts. Flexible couplings are installed before and after the torque sensor, and the torque sensor is connected to the input end of the PLC controller.

7. A filter press receiving hopper for kaolin production according to claim 1, characterized in that: The notch of the helical blade is trapezoidal, and the edges are chamfered.

8. A filter press receiving hopper for kaolin production according to claim 1, characterized in that: The notch depth of the spiral blade is 1 / 3 of the blade width, and the notch edge is rounded and polished.

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