Oil cylinder pressing plate offset detection assembly and filter press

Abstract

The utility model relates to the technical field of detection, in particular to an oil cylinder pressing plate deviation detection assembly and a filter press, the oil cylinder pressing plate deviation detection assembly comprises a plurality of capacitive displacement sensors, two electrodes of each displacement sensor are respectively fixed on opposite side faces of a pressing plate and an oil cylinder seat in the filter press in a magnetic attraction mode, and the displacement sensors are in signal communication with a controller. The first ring and the second ring are elastic and coaxial, the axis of the first ring and the axis of the second ring are parallel to the telescopic direction of the oil cylinder, the first ring and the second ring are rotationally installed on the opposite side faces of the pressing plate and the oil cylinder base respectively, and sliding sleeves are fixed to the first ring and the second ring respectively and arranged outside the electrode in a sleeving mode. And the peripheries of the first ring and the second ring are respectively and fixedly provided with a driving lever, and the two driving levers are connected through a connecting rod. The first ring and the second ring can synchronously rotate to a first position state and a second position state, and an electrode plate of the displacement sensor synchronously rotates along with the first ring and the second ring.

Description

Technical Field

[0001] This utility model relates to the field of assembly tooling technology, and in particular to a hydraulic cylinder clamping plate offset detection component and a filter press. Background Technology

[0002] Due to the characteristics of coal slime, such as high moisture content, high viscosity, high water retention capacity, and low calorific value, the dewatering methods currently used in the market include thermal drying, centrifugal dewatering, and mechanical pressure filtration. Among these, mechanical pressure filtration has a better dewatering effect, reducing the moisture content of coal slime to a low level. This method has relatively high dewatering efficiency and a large processing capacity, making it suitable for large-scale coal slime dewatering.

[0003] The inventors understood that in the process of filter cake formation using a filter press, appropriately increasing the pressing pressure is crucial. High-pressure or ultra-high-pressure pressing can maximize the extraction of moisture, achieving efficient utilization of coal slime. However, excessive pressure can cause excessive force on the clamping plate at the end of the cylinder. If not properly tightened, this can easily lead to displacement of the cylinder and clamping plate, posing significant risks to subsequent use and maintenance. In related technical solutions, the number of displacement detection sensors is limited, making it difficult to quickly and accurately detect the displacement of the clamping plate. Utility Model Content

[0004] This utility model provides a hydraulic cylinder clamping plate offset detection component and a filter press, which can solve at least one of the above-mentioned technical problems.

[0005] To address the aforementioned technical problems, one or more embodiments of this utility model provide a hydraulic cylinder clamping plate offset detection assembly, comprising multiple capacitive displacement sensors. The two electrodes of each displacement sensor are magnetically fixed to the opposing sides of the clamping plate and the hydraulic cylinder seat in a filter press. The displacement sensors are signal-connected to a controller. The assembly also includes a first and second ring, which are elastic and coaxial, with their axes parallel to the extension and retraction direction of the hydraulic cylinder. The first and second rings are rotatably mounted on the opposing sides of the clamping plate and the hydraulic cylinder seat. Sliding sleeves are fixed to both the first and second rings, and these sleeves are fitted over the electrodes. A lever is fixed to the outer circumference of each of the first and second rings, and the two levers are connected by a connecting rod. The first and second rings can rotate synchronously to a first position and a second position, and the electrode plates of the displacement sensors rotate synchronously with the first and second rings.

[0006] One or more embodiments of this utility model also provide a filter press, which includes at least a cylinder seat and a pressing plate, and a cylinder pressing plate offset detection component is installed between the cylinder seat and the pressing plate.

[0007] The beneficial effects of one or more of the above technical solutions are as follows:

[0008] In this application, the displacement sensor is a capacitive sensor, and its two electrode plates can be magnetically fixed to the sides of the clamping plate and the cylinder seat opposite to each other. When multiple capacitive displacement sensors are used in combination, the displacement of the clamping plate at different positions relative to the cylinder seat during the extension and retraction of the cylinder can be measured. Therefore, this application facilitates the determination of whether the clamping plate has shifted by using displacement data measured at different displacement sensors. The magnetically attached displacement sensors are easy to adjust in their mounting position on the clamping plate, thus allowing for the acquisition of a larger number of sets of displacement monitoring data using a smaller number of sensors.

[0009] Furthermore, this application rotatably mounts a first ring and a relief ring on the filter press plate and the cylinder seat, respectively, with a sliding sleeve fixed on the first and second rings, and the electrode sheet embedded in the sliding sleeve. This arrangement facilitates changing the sensor's mounting position on the filter press plate by synchronously driving the rotation of the first and second rings, thus reducing the difficulty of adjusting the sensor's mounting position relative to the filter press plate. Attached Figure Description

[0010] Figure 1 This is a side view of the detection component installed between the pressure plate and the cylinder seat in an embodiment of the present invention;

[0011] Figure 2 This is a schematic diagram of the first electrode plate and the first ring of the displacement sensor installed on the side of the clamping plate near the cylinder seat in this embodiment of the present invention.

[0012] Figure 3 yes Figure 2 A schematic diagram showing the first ring after it has been rotated by a certain angle.

[0013] Figure 4 This is a schematic diagram of the first ring cooperating with the sliding sleeve and the first electrode plate in an embodiment of this utility model;

[0014] Figure 5 This is a comparison diagram of the posture of the clamping plate when it is offset and when it is not offset in the embodiment of this utility model;

[0015] Reference numerals in the attached drawings: 1. Clamping plate; 2. First ring; 3. Displacement sensor; 4. Piston rod; 5. Cylinder seat; 6. Cylinder; 7. Lever; 8. Connecting hole; 9. Sliding sleeve; 10. First electrode plate; 11. Slide rail. Detailed Implementation

[0016] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0017] like Figures 1-5As shown, one or more embodiments of this utility model provide a hydraulic cylinder clamping plate offset detection assembly, including multiple capacitive displacement sensors 3. The two electrodes of the displacement sensors 3 are magnetically fixed to the opposite sides of the clamping plate 1 and the hydraulic cylinder seat 5 in a filter press, respectively. The displacement sensors 3 are signal-connected to a controller. It also includes an elastic and coaxial first ring 2 and a second ring 12, whose axes are parallel to the extension and retraction direction of the hydraulic cylinder 6. The first ring 2 and the second ring 12 are rotatably mounted on the opposite sides of the clamping plate 1 and the hydraulic cylinder seat 5, respectively. Sliding sleeves 9 are fixed to the first ring 2 and the second ring 12, respectively, and the sliding sleeves 9 are sleeved on the outside of the electrodes. A lever 7 is fixed to the outer periphery of the first ring 2 and the second ring 12, and the two levers 7 are connected by a connecting rod. The first ring 2 and the second ring 12 can rotate synchronously to a first position state and a second position state, and the electrode plates of the displacement sensors 3 rotate synchronously with the first ring 2 and the second ring 12.

[0018] A capacitive displacement sensor typically consists of two electrodes: one fixed to the object being measured and the other fixed to the measuring device. When the object moves, the distance between the two electrodes changes, causing a change in capacitance. This change in capacitance can be amplified and processed by circuitry, ultimately converting it into an electrical signal related to the object's displacement.

[0019] In this embodiment, multiple piston rods 4 of the oil cylinder 6 extend from the oil cylinder seat 5 of the filter press. The ends of the piston rods 4 are fixed to the same pressing plate 1, which is used to compress and remove water from the coal slime and other sludge inside the filter press. Since the pressing plate 1 is driven synchronously by multiple oil cylinders 6, it is very easy for the pressing plate 1 to shift due to poor fastening of the oil cylinders 6 or insufficient synchronization during the extension and retraction of the oil cylinders 6. When the pressing plate 1 shifts, it may cause coal slime leakage or cause some oil cylinders 6 to be subjected to excessive pressure, resulting in further failure of the fastening position.

[0020] In this embodiment, multiple sets of capacitive displacement sensors 3 are used. Under normal circumstances, the side distance between the clamping plate 1 and the cylinder seat 5 should be equal, and the data measured by the multiple displacement sensors 3 should be equal. However, when the value of one displacement sensor 3 is different from the values ​​of other displacement sensors 3, it indicates that the clamping plate 1 has shifted at that position.

[0021] Specifically, when the first ring 2 and the second ring 12 are made of elastic material, and the electrode plates of the displacement sensor 3 are fixed to the clamping plate 1 or the cylinder seat 5 by magnetic attraction, the structure of the first ring 2, the second ring 12 and the electrode plates will not affect the offset and deformation of the clamping plate 1, nor will it affect the final detection result.

[0022] The first ring 2 and the second ring 12 here can be made of materials such as rubber or silicone, which can be set by those skilled in the art.

[0023] See Figures 2-4 This application only provides a schematic diagram of the structure of the first ring 2 disposed on the clamping plate 1 and the first electrode plate 301 of the displacement sensor 3. It can be seen that the difference between the end face of the cylinder seat 5 and the end face of the clamping plate 1 is that the cylinder body of the cylinder 6 occupies a larger area on the end face of the cylinder seat 5. The structural arrangement of the second ring 12 and the second electrode plate 302 on the end face of the cylinder seat 5 can be found in the clamping plate 1, and corresponding schematic diagrams are not provided here.

[0024] In this embodiment, the first ring 2 and the second ring 12 are respectively provided with slide rails 11 along their own circumference, and the opposite sides of the clamping plate 1 and the cylinder seat 5 are respectively provided with annular grooves, and the slide rails 11 are located in the grooves.

[0025] As a specific structural form, the cross-section of the slide rail 11 and the slide groove can be T-shaped or dovetail-shaped to prevent the slide rail 11 from separating from the slide groove.

[0026] In this embodiment, the sliding sleeve 9 includes a main body and a sleeve. The main body is fixed to the end face of the first ring 2. One end of the main body protrudes toward the center of the first ring 2 or the second ring 12 and is fixed to the sleeve. The sleeve has an inner cavity parallel to the extension and retraction direction of the hydraulic cylinder 6.

[0027] As a specific structural form, the sleeve portion here is a square sleeve. The sleeve portion and the main body portion can be manufactured by integral molding, or they can be fixed by welding or gluing. Furthermore, the main body portion here can be fixed to the end face of the first ring 2 or the second ring 12 by welding or gluing.

[0028] In this embodiment, an alarm is also included, which is connected to the controller. The alarm and the controller are supported by the oil cylinder seat 5 of the filter press.

[0029] Specifically, the alarm here can be a buzzer alarm, which will sound an alarm when the controller detects that the offset of a certain position of the clamping plate 1 is greater than the set value.

[0030] In this embodiment, there are three capacitive displacement sensors 3, which are evenly distributed along the axial direction of the first ring 2 and the second ring 12. Specifically, the included angle between the three capacitive displacement sensors 3 is 120 degrees.

[0031] In other embodiments, the number of capacitive displacement sensors 3 can be two or four, or other numbers, which can be set by those skilled in the art.

[0032] In this embodiment, the extension direction of the lever 7 is radial to the first ring 2 or the second ring 12, and the end of the lever 7 passes through a connecting rod, the extension direction of which is parallel to the extension and retraction direction of the hydraulic cylinder 6.

[0033] Specifically, the end of the lever 7 is provided with a circular mounting hole 8, the cross-section of the connecting rod is circular, and the end of the connecting rod passes through the mounting hole 8.

[0034] One or more embodiments of this utility model also provide a filter press, which includes at least a cylinder seat 5 and a pressing plate 1, and a cylinder 6 and a pressing plate 1 offset detection component are installed between the cylinder seat 5 and the pressing plate 1.

[0035] In this embodiment, nine cylinders 6 are installed on the cylinder base 5. The nine cylinders 6 are arranged in a rectangular array, with the first ring 2 and the second ring 12 surrounding the cylinder 6 at the center.

[0036] In other embodiments, the number of hydraulic cylinders 6 can be 8 or 10, or other numbers, which can be set by those skilled in the art.

[0037] Working principle: When using this device, firstly, the first ring 2 is installed on the clamping plate 1, and the second ring 12 is installed on the end face of the cylinder seat 5. Then, the first electrode plate 301 or the second electrode plate 302 of the displacement sensor 3 is respectively embedded in the corresponding sliding sleeve 9. The first electrode plate 301 is attracted to the clamping plate 1 by a magnet, and the second electrode plate 302 is attracted to the cylinder seat 5 by a magnet. Furthermore, the two first electrode plates 301 and the second electrode plate 302 of the displacement sensor 3 are arranged opposite to each other along the extension and retraction direction of the cylinder 6.

[0038] When the hydraulic cylinder 6 extends, the three displacement sensors 3 measure the displacement of the clamping plate 1 at its location. Then, the user adjusts the first ring 2 and the second ring 12 via the lever 7, causing the first ring 2, the second ring 12, and the sliding sleeve 9 to rotate the displacement sensors 3 around the axis of the first ring 2. The three displacement sensors 3 can additionally measure a set of displacement data.

[0039] When the difference between one or more values ​​in the displacement data and other values ​​exceeds a set threshold range, the controller activates the alarm to sound.

[0040] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0041] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A ram plate offset detection assembly comprising: The displacement sensor includes a plurality of capacitive displacement sensors, two electrodes of the displacement sensor are fixed on opposite sides of a pressing plate and a cylinder seat in a magnetic manner, and the displacement sensor is in signal communication with a controller. The first ring and the second ring are coaxial and elastic, and the axes of the first ring and the second ring are parallel to the extension direction of the oil cylinder. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively.

2. The ram pressurization plate offset detection assembly of claim 1, wherein, The electrode plate of the displacement sensor rotates synchronously with the first ring and the second ring.

3. The ram pressurization plate offset detection assembly of claim 2, wherein, The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively.

4. The ram pressurization plate offset detection assembly of claim 1, wherein, The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively.

5. The ram pressurization plate offset detection assembly of claim 1, wherein, The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively.

6. The ram pressurization plate offset detection assembly of claim 1, wherein, The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively.

7. A filter press, characterized in that The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively.

8. The filter press of claim 7, wherein, The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder seat, respectively. The first ring and the second ring are rotatably installed on opposite sides of the pressing plate and the cylinder

Images