Automatic sampling device of plate-and-frame filter press
By designing an automatic sampling device for plate and frame filter presses, automatic sampling is achieved using a feeding mechanism and a flipping mechanism, which solves the problems of sampling safety hazards and poor sample representativeness in existing technologies, and ensures the accuracy of analysis results.
Patent Information
- Application Number
- CN202522186213.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-10-16
AI Technical Summary
The existing sampling methods for plate and frame filter presses have safety hazards and poor sample representativeness, resulting in low accuracy of analytical results.
Design an automatic sampling device for a plate and frame filter press, including a feeding mechanism and a flipping mechanism. The material is automatically transported to the sampling bucket by the swing of the flipping mechanism to form a material drop gap, thereby realizing automatic sampling.
It achieves a safe and efficient sampling process, allowing sampling of each filter cake, resulting in more representative samples and ensuring the accuracy of the analysis results.
Smart Images
Figure CN223664304U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of plate and frame filter press, disclose a plate and frame filter press automatic sampling device in particular. BACKGROUND
[0002] The plate and frame filter press is a kind of general solid-liquid separation equipment, is widely used in chemical industry, metallurgy, pharmacy, dye, food, brewing, ceramics and environmental protection etc., plate and frame filter press usually includes several filter chambers by filter plate, filter frame is formed, rely on compression device and filter chamber is compressed, through feed pump and slurry are sent into each filter chamber, through filter cloth and solid particles and liquid are separated, filtrate is discharged along the groove of adjacent filter plate, solid particles are intercepted in filter frame and form filter cake, after solid-liquid separation, filter plate is pulled open and realizes gravity unloading residue.
[0003] In hydrometallurgy, the filter cake after plate and frame filter press filtration is generally called filter residue, and enterprises need to sample the filter residue for metal element content analysis, which is an important link for calculating metal recovery rate. Traditional plate and frame filter press sampling is manual sampling, and there are usually two sampling methods: one is when the filter cake falls off by gravity when the filter plate is pulled open, the sample is taken from above the plate and frame filter press, which requires the sampler to react quickly to grab the sample. However, the device is running during this process, which poses a certain safety hazard, and the sample grabbed by the sampler is located above the filter cake, which can cause the analysis result to be low, and it is also impossible to sample evenly from multiple filter chambers, resulting in poor sample representativeness. The other is to sample in the bin, and the filter cake falls into the lower bin to form a residue pile, and the sampler points on the residue pile and randomly samples multiple points. This method meets the general sampling rules, and the sample is more representative, and the analysis result is more accurate. However, in actual operation, the residue pile in the bin often cannot be transported in time, and a new batch of filter residue may cover the previous batch. When the residue pile is too high, it is difficult to randomly point, and the sample is difficult to be representative, and even the sample of the previous batch may be taken, resulting in large analysis error. Both of the above sampling methods have the problems of difficult sampling and poor sample representativeness, which leads to low accuracy of subsequent analysis results. INVENTION CONTENTS
[0004] To solve the problems in the background art, the utility model discloses a plate and frame filter press automatic sampling device, which includes a plate turning mechanism and a feeding mechanism, realizes automatic sampling, is convenient for sampling, and the sample is more representative, and can ensure the accuracy of subsequent analysis results.
[0005] To achieve the above-mentioned utility model purposes, the utility model adopts the following technical solutions:
[0006] The application discloses an automatic sampling device of a plate-and-frame filter press, which comprises a feeding mechanism, a turnover plate mechanism arranged above the feeding mechanism, the turnover plate mechanism being arranged directly below a discharging port of the plate-and-frame filter press, the turnover plate mechanism comprising a first turnover plate and a second turnover plate in a long plate shape, the left and right ends of the first turnover plate and the second turnover plate being connected with opening and closing assemblies, under the action of the opening and closing assemblies, the first turnover plate and the second turnover plate can swing towards each other so that the upper edges thereof are in contact and form a reversed V-shaped cover arranged above the feeding mechanism or swing reversely so that the upper edges thereof are separated and form an eight-shaped arrangement to form a discharging gap, material can fall onto the feeding mechanism through the discharging gap, a sampling bucket for receiving the material is arranged below a discharging end of the feeding mechanism, and under the action of a driving device, the feeding mechanism can convey the received material into the sampling bucket.
[0007] Further, the automatic sampling device of the plate-and-frame filter press, the feeding mechanism comprises a support in a rectangular frame structure, the support is fixedly connected with the bottom of the plate-and-frame filter press through a plurality of connecting rods, a driving roller is arranged at one end of the support adjacent to the sampling bucket, a driven roller is arranged at the other end of the support, a conveying belt is sleeved between the driving roller and the driven roller, and a sampling discharging hopper is arranged between the discharging end of the conveying belt and the sampling bucket.
[0008] Further, the automatic sampling device of the plate-and-frame filter press, the opening and closing assembly comprises two turnover plate opening and closing cylinders arranged at intervals, the turnover plate opening and closing cylinders are arranged above the feeding mechanism through U-shaped connecting frames, the piston rods of the turnover plate opening and closing cylinders extend downward through the corresponding connecting frames, the first turnover plate and the second turnover plate are arranged between the two connecting frames, connecting ears extending in the front and back directions are arranged at the ends of the piston rods, hinging shafts are arranged at the ends of the connecting ears, cranks are hingedly connected to the hinging shafts, the left and right ends of the first turnover plate and the second turnover plate are connected with the other ends of the corresponding cranks through connecting rods, when the piston rods of the turnover plate opening and closing cylinders are elongated, the upper edges of the first turnover plate and the second turnover plate swing towards each other so that the upper edges thereof are in contact and form a reversed V-shaped cover arranged above the feeding mechanism, and when the piston rods of the turnover plate opening and closing cylinders are retracted, the upper edges of the first turnover plate and the second turnover plate swing reversely so that the upper edges thereof are separated and form an eight-shaped arrangement to form a discharging gap.
[0009] Further, the automatic sampling device of the plate-and-frame filter press further comprises a lifting mechanism, the lifting mechanism comprising a lifting motor and a lifting basket, the lifting motor is fixedly arranged at the discharging end of the feeding mechanism through a connecting plate, two lifting rollers are connected with the output end of the lifting motor through a bidirectional shaft coupling, steel wires are wound around the lifting rollers respectively, the free ends of the steel wires are fixedly connected with the lifting basket respectively, and the sampling bucket is arranged on the lifting basket.
[0010] Further, the automatic sampling device of the plate-and-frame filter press, 45-degree chamfers are arranged at the inner sides of the upper edges of the first turnover plate and the second turnover plate.
[0011] Further, the plate-and-frame filter press automatic sampling device is provided with a control box on the support, and output ends of the control box are electrically connected with control ends of the driving roller, the opening and closing cylinder and the lifting motor respectively.
[0012] Compared with the prior art, the plate-and-frame filter press automatic sampling device has the following beneficial effects:
[0013] The plate-and-frame filter press automatic sampling device comprises a feeding mechanism and a turnover plate mechanism, the turnover plate mechanism is arranged directly below a discharge port of the plate-and-frame filter press, the turnover plate mechanism comprises first and second turnover plates in the shape of a long plate, left and right ends of the first and second turnover plates are connected with an opening and closing assembly, and under the action of the opening and closing assembly, upper edges of the first and second turnover plates can swing towards each other to make the upper edges contact and form an inverted V-shaped cover arranged above the feeding mechanism or swing reversely to make the upper edges separate and form an eight-shaped arrangement to form a discharging gap, material can fall onto the feeding mechanism through the discharging gap, a sampling bucket for receiving material is arranged below a discharging end of the feeding mechanism, under the action of a driving device, the feeding mechanism can convey the received material into the sampling bucket to realize automatic sampling, sampling is convenient, each filter cake is sampled, 100% sampling is realized, samples are more representative, and the accuracy of subsequent analysis results is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a schematic view of the plate-and-frame filter press automatic sampling device according to the present application;
[0015] Figure 2 is a schematic view of the feeding mechanism according to the present application;
[0016] Figure 3 is a schematic view of the turnover plate mechanism according to the present application;
[0017] Figure 4 is a schematic view of the lifting mechanism according to the present application;
[0018] Figure 5 is a schematic view of the installation position of the plate-and-frame filter press automatic sampling device according to the present application;
[0019] In the above drawings: 1 - lifting mechanism; 1.1 - lifting motor; 1.2 - lifting roller; 1.3 - steel wire rope; 1.4 - lifting basket; 2 - sampling bucket; 3 - control box; 4 - feeding mechanism; 4.1 - sampling discharge hopper; 4.2 - driving roller; 4.3 - conveying belt; 4.4 - support; 4.5 - belt tensioner; 4.6 - driven roller; 5 - turnover plate mechanism; 5.1 - turnover plate opening and closing cylinder; 5.2 - first turnover plate; 5.3 - second turnover plate; 5.4 - connecting frame; 5.5 - piston rod; 5.6 - hinged shaft; 5.7 - crank; 5.8 - connecting handle; 6 - connecting column; 7 - connecting rod. Detailed Implementation
[0020] To better understand this utility model, the following embodiments further illustrate its content, but the content of this utility model is not limited to the embodiments described below. In the description of this utility model, unless otherwise explicitly specified and limited, the term "plural" refers to two or more, and the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0022] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0023] Combined with appendix Figures 1-5This invention provides a detailed description of an automatic sampling device for a plate and frame filter press, comprising a feeding mechanism 4, and a flapping mechanism 5 positioned above the feeding mechanism 4, directly below the discharge port of the plate and frame filter press. The flapping mechanism 5 includes a first flapping plate 5.2 and a second flapping plate 5.3 in the shape of elongated plates. The left and right ends of the first flapping plate 5.2 and the second flapping plate 5.3 are respectively connected to an opening and closing assembly. Under the action of the opening and closing assembly, the first flapping plate 5.2 and the second flapping plate 5.3 can rotate and swing towards each other, causing their upper edges to contact each other in an inverted V-shape and close above the feeding mechanism 4, or rotate and swing in the opposite direction, causing their upper edges to separate in a V-shape and open to form a material discharge gap. The material can fall onto the feeding mechanism 4 through the material discharge gap. A material receiving device is provided below the discharge end of the feeding mechanism 4. Under the action of the driving device, the feeding mechanism 4 can transport the received material into the sampling barrel 2. When the filter plate of the filter press is unloading, the automatic sampling device of the plate and frame filter press of this utility model is interlocked. At this time, the first flap 5.2 and the second flap 5.3 are opened, the feeding mechanism 4 starts to operate, and the filter cake falls off by its own weight, falling above the first flap 5.2 and the second flap 5.3 and impacting and breaking. A small amount of broken parts fall onto the feeding mechanism 4 and are conveyed to the sampling barrel 2 by the feeding mechanism 4. When the unloading is completed, the first flap 5.2 and the second flap 5.3 and the feeding mechanism 4 are interlocked and closed, and the sampling operation stops. The entire sampling process is automatic and convenient. Each filter cake is sampled, achieving 100% sampling. The sample is more representative and can ensure the accuracy of subsequent analysis results.
[0024] As an optional design, the automatic sampling device for the plate and frame filter press is preferred. The feeding mechanism 4 includes a support 4.4 with a rectangular frame structure. The bottom of the support 4.4 is fixedly connected to the bottom of the plate and frame filter press via connecting columns 6 and several connecting rods 7. A drive roller 4.2 is provided at one end of the support 4.4 near the sampling barrel 2, and a driven roller 4.6 is provided at the other end of the support 4.4. A conveyor belt 4.3 is sleeved between the drive roller 4.2 and the driven roller 4.6. A belt tensioner 4.5 is also provided on the support 4.4 to adjust the belt tension. The belt tensioner 4.5 is existing technology, so its structure will not be described in detail here. A sampling discharge hopper 4.1 is set between the discharge end of the conveyor belt 4.3 and the sampling bucket 2. The sampling discharge hopper 4.1 is fixedly connected to the bracket 4.4. The sampling discharge hopper 4.1 is a cylindrical structure with a large upper diameter and a small lower diameter. During sampling, the material falling from the gap between the first flap 5.2 and the second flap 5.3 falls onto the conveyor belt 4.3. The conveyor belt 4.3 automatically transports the sample to the sampling discharge hopper 4.1. Finally, the sample falls into the sampling bucket 2 to complete the automatic sampling.
[0025] As an optional design, the automatic sampling device for the plate and frame filter press is preferably configured with an opening and closing assembly including two spaced-apart flap opening and closing cylinders 5.1. The flap opening and closing cylinders 5.1 are respectively mounted above the feeding mechanism 4 via U-shaped connecting frames 5.4. The piston rod 5.5 of each flap opening and closing cylinder 5.1 extends downwards through the corresponding connecting frame 5.4. A first flap 5.2 and a second flap 5.3 are obliquely positioned between the two connecting frames 5.4. Connecting ears extending in the front-rear direction are provided at the ends of the piston rods 5.5 of the flap opening and closing cylinders 5.1. Hinge shafts 5.6 are provided at the ends of the connecting ears, and cranks 5.7 are hinged to the hinge shafts 5.6. The other end of the crank 5.7 is connected to one end of a connecting handle 5.8, and the other end of the connecting handle 5.8 is fixedly connected to the end of either the first flap 5.2 or the second flap 5.3. When the piston rod 5.5 of the flap opening and closing cylinder 5.1 extends or retracts, the hinges... The shaft 5.6 descends or rises vertically. When the hinge shaft 5.6 rises or falls, it applies force to the first flap 5.2 and the second flap 5.3 through the crank 5.7. The crank 5.7 drives the corresponding first flap 5.2 and second flap 5.3 to rotate and swing around the hinge shaft 5.6 at a certain angle to open or close the first flap 5.2 and the second flap 5.3. When the piston rod 5.5 of the flap opening and closing cylinder 5.1 extends, the upper edges of the first flap 5.2 and the second flap 5.3 rotate and swing towards each other so that their upper edges contact each other in an inverted V-shape and cover the feeding mechanism 4 to stop sampling. When the piston rod 5.5 of the flap opening and closing cylinder 5.1 retracts, the upper edges of the first flap 5.2 and the second flap 5.3 rotate and swing in opposite directions so that their upper edges separate into an eight-shaped setting to form a material drop gap for automatic sampling. Automatic sampling is achieved by opening and closing the flap opening and closing cylinder 5.1. Throughout the sampling process, each filter cake is sampled, and the sample taken is more representative, achieving 100% sampling.
[0026] As an optional design, the automatic sampling device for the plate and frame filter press preferably includes a lifting mechanism 1. The lifting mechanism 1 includes a lifting motor 1.1 and a lifting basket 1.4. The lifting motor 1.1 is fixedly mounted at the discharge end of the feeding mechanism 4 via a connecting plate. Two lifting rollers 1.2 are connected to the output end of the lifting motor 1.1 via a bidirectional coupling. Steel wire ropes 1.3 are wound around each of the lifting rollers 1.2, and the free ends of the steel wire ropes 1.3 are fixedly connected to the lifting basket 1.4. The sampling bucket 2 is mounted on the lifting basket 1.4. The lifting mechanism 1 allows for easy adjustment of the height of the sampling bucket 2, making it suitable for large plate and frame filter presses. The sampling lifting mechanism 1 is activated and deactivated via PLC. After sampling, the lifting basket 1.4 is lowered to a suitable position. After removing the material from the sampling bucket 2, the empty sampling bucket 2 is placed in the lifting basket and raised to a designated position for the next sampling. The entire sampling process is completed by an automatic sampling device, reducing the working time and intensity of the samplers. One bucket of sample represents a batch of samples. Compared with existing sampling methods, this avoids the problem of fewer sampling points and interference between different batches of samples.
[0027] As an optional design, the automatic sampling device of the plate and frame filter press is preferably provided with a 45-degree chamfer on the inner side of the upper edge of the first flap 5.2 and the second flap 5.3. When the upper edges of the first flap 5.2 and the second flap 5.3 are in contact, the first flap 5.2 and the second flap 5.3 together form a 90-degree angle, which acts like a striking pin to break the filter cake. After breaking, the filter cake slides smoothly from the inclined surface of the first flap 5.2 and the second flap 5.3 to the filter cake pile below. When the first flap 5.2 and the second flap 5.3 are open, the 45-degree chamfer acts like a striking pin to break the filter cake. After a small amount of breakage, the filter cake falls from the material drop gap between the first flap 5.2 and the second flap 5.3 to the lower conveyor belt 4.3. After a large amount of breakage, the filter cake slides smoothly from the inclined surface of the first flap 5.2 and the second flap 5.3 to the filter cake pile below.
[0028] As an optional design, the automatic sampling device for the plate and frame filter press is preferably equipped with a control box 3 on the support 4.4. The output terminal of the control box 3 is electrically connected to the control terminals of the drive drum 4.2, the opening and closing cylinder, and the lifting motor 1.1, respectively. The start and stop of the drive drum 4.2, the opening and closing cylinder, and the lifting motor 1.1 are automatically controlled by the programmable logic controller (PLC) in the control box 3. The programmable logic controller (PLC) adopts Siemens S7-200 series products.
[0029] The working process of this utility model is as follows:
[0030] During operation, when the filter plates of the filter press are unloading, the automatic sampling device of this plate and frame filter press is activated. At this time, the first flap 5.2 and the second flap 5.3 open, and the feeding mechanism 4 starts to operate. When the filter cake falls due to its own weight, it falls above the first flap 5.2 and the second flap 5.3 and is crushed by impact. A small amount of the crushed part falls onto the feeding mechanism 4 and is conveyed to the sampling bucket 2 by the feeding mechanism 4. When the unloading is completed, the first flap 5.2, the second flap 5.3 and the feeding mechanism 4 are interlocked and closed, and the sampling operation stops. The entire sampling process is automatic and convenient. Each filter cake is sampled, achieving 100% sampling. The sample is more representative and can ensure the accuracy of subsequent analysis results.
[0031] The above description is only an application implementation of this utility model, but the protection scope of this utility model is not limited thereto and cannot be used to limit the scope of rights of this utility model. Any equivalent changes made according to the technical solution of this utility model should be included within the protection scope of this utility model.
Claims
1. An automatic sampling device for a plate and frame filter press, characterized in that: The filter press includes a feeding mechanism, above which is a flapping mechanism located directly below the feed inlet. The flapping mechanism comprises a first flap and a second flap in the shape of long plates. The left and right ends of the first and second flaps are connected to an opening and closing assembly, respectively. Under the action of the opening and closing assembly, the upper edges of the first and second flaps can swing towards each other so that their upper edges contact each other in an inverted V-shape and cover the feeding mechanism, or swing in the opposite direction so that their upper edges separate in a figure-eight shape to form a material drop gap. The material can fall onto the feeding mechanism through the material drop gap. A sampling bucket for receiving the material is provided below the discharge end of the feeding mechanism. Under the action of the drive device, the feeding mechanism can transport the received material into the sampling bucket.
2. The automatic sampling device for plate and frame filter presses according to claim 1, characterized in that: The feeding mechanism includes a rectangular frame structure support. The bottom of the support is fixedly connected to the bottom of the plate and frame filter press through several connecting rods. A drive roller is provided at one end of the support near the sampling barrel, and a driven roller is provided at the other end of the support. A conveyor belt is sleeved between the drive roller and the driven roller, and a sampling discharge hopper is provided between the discharge end of the conveyor belt and the sampling barrel.
3. The automatic sampling device for plate and frame filter presses according to claim 2, characterized in that: The opening and closing assembly includes two spaced-apart flap opening and closing cylinders. The flap opening and closing cylinders are respectively straddling the feeding mechanism above the valve mechanism via U-shaped connecting frames. The piston rods of the flap opening and closing cylinders extend downward through the corresponding connecting frames. The first flap and the second flap are disposed between the two connecting frames. The end of the piston rod is provided with a connecting lug extending in the front-rear direction. The end of the connecting lug is provided with a hinge shaft. A crank is hinged to the hinge shaft. The left and right ends of the first flap and the second flap are respectively connected to the other end of the corresponding crank via connecting handles. When the piston rod of the flap opening and closing cylinder extends, the upper edges of the first flap and the second flap swing towards each other so that their upper edges contact each other in an inverted V-shape covering the feeding mechanism. When the piston rod of the flap opening and closing cylinder retracts, the upper edges of the first flap and the second flap swing in opposite directions so that their upper edges separate in a figure-eight shape to form a material drop gap.
4. The automatic sampling device for plate and frame filter presses according to claim 3, characterized in that: It also includes a lifting mechanism, which includes a lifting motor and a lifting basket. The lifting motor is fixedly installed at the discharge end of the feeding mechanism via a connecting plate. Two lifting rollers are connected to the output end of the lifting motor via a two-way coupling. Steel wire ropes are wound on the lifting rollers respectively. The free ends of the steel wire ropes are fixedly connected to the lifting basket respectively. The sampling bucket is placed on the lifting basket.
5. The automatic sampling device for plate and frame filter presses according to claim 3, characterized in that: The inner edges of the upper edges of the first and second flip panels are respectively provided with 45-degree chamfers.
6. The automatic sampling device for plate and frame filter press according to claim 3, characterized in that: a control box is provided on the support, and the output end of the control box is electrically connected to the control end of the drive drum, the opening and closing cylinder and the lifting motor respectively.