Sonar filter cake thickness meter and its application

Abstract

The present invention provides a sonar filter cake thickness meter and its application, the thickness meter comprises a shell, a transmission shaft is arranged in the shell, a detector is arranged in the transmission shaft, a driving cylinder is arranged at the proximal end of the shell, a detection plate abutting against the transmission shaft is arranged at the distal end of the shell, the cylinder shaft of the driving cylinder is connected to the transmission shaft, the driving cylinder works to drive the transmission shaft to rotate, thereby driving the detection plate to move. The beneficial effects of the present invention are embodied in that filter cakes of different thicknesses can be detected by sensors of different bands, and at the same time, the thickness meter is arranged on the cylinder, and the accuracy of the detection will not be affected by the different specific gravities of the substances to be filtered.

Description

Technical Field

[0001] The invention belongs to the technical field of microporous filtration, and in particular relates to a sonar filter cake thickness meter and application thereof. Background Art

[0002] A filter is a device that uses a porous filter to achieve solid-liquid separation. Filters are used in chemical, petroleum, pharmaceutical, light industry, food, mineral processing, coal and water treatment sectors. After a period of use, the filter element will be coated with filter cake. It is necessary to monitor the thickness of the filter cake in time and remove it to better achieve the filtering effect. The existing filter cake detection uses a distance sensor that extends from the liquid collecting pipe to the filter element position. When the filter cake fills the gap between the filter elements, force acts on the filter element, and the liquid collecting pipe is affected by the force and moves laterally, causing the signal on the sensor to change. However, due to the different specific gravities of different filter materials, some large-scale filtering equipment can even bend the entire liquid collecting pipe, so the detection method using this method is not accurate. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides a sonar filter cake thickness meter and its application.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] The sonar filter cake thickness meter comprises a shell, a transmission shaft is arranged in the shell, a detector is arranged in the transmission shaft, a driving cylinder is arranged at the proximal end of the shell, a detection plate abutting the transmission shaft is arranged at the distal end of the shell, the cylinder shaft of the driving cylinder is connected to the transmission shaft, and the driving cylinder works to drive the transmission shaft to rotate, thereby driving the detection plate to move.

[0006] Preferably, the sensor comprises two sonar sensors having two different wavelengths.

[0007] Preferably, a transmission slide plate is sleeved on the distal end of the rotating shaft, the detection plate is arranged on a mounting plate fixed on the distal end of the shell, and the upper end of the detection plate is connected to the mounting plate via a connecting shaft.

[0008] Preferably, a roller is provided at the upper end of the detection plate, and a wedge block is provided at the upper end of the transmission slide plate. The cross-section of the wedge block is trapezoidal. The roller abuts against the wedge block, and the driving cylinder works to drive the roller of the detection plate to roll on the wedge block.

[0009] Preferably, a baffle for sealing the transmission shaft is provided at the distal end of the transmission shaft.

[0010] Preferably, a sealing gasket is provided between the transmission shaft and the housing.

[0011] Preferably, one of the trapezoidal sides of the wedge-shaped block contacts the roller.

[0012] Preferably, the cylinder is provided with a solenoid valve electrically connected to the PLC.

[0013] A filter using any of the above-mentioned sonar filter cake thickness meters comprises a cylinder, a filter element is arranged in the cylinder, a sonar filter cake thickness meter is arranged on the cylinder, the distal end of the sonar filter cake thickness meter is arranged in the cylinder, and a gap is arranged between the detection plate and the filter element.

[0014] Preferably, the filtering detection method of the filter of the sonar filter cake thickness meter described above comprises the following steps:

[0015] S1. When the sonar filter cake thickness meter is in the initial state, the roller of the detection plate is placed on one side of the trapezoidal side of the wedge block of the transmission slide, so that the lower end of the detection plate is closely attached to the far end of the transmission shaft;

[0016] S2, the material to be filtered enters from the feed port of the filter and is filtered through the filter element;

[0017] S3. After a period of time, the cylinder works to drive the transmission shaft to rotate. As the transmission slide plate rotates, the detection plate will roll along the trapezoidal edge of the wedge block through the roller until the detection plate is in a vertical state;

[0018] S4. As the filtration proceeds, the filter cake accumulates on the surface of the filter element. When the filter cake accumulates to a certain thickness, the detection plate will be squeezed toward the transmission shaft. The thickness of the filter cake is detected by sensors with different wavelengths to obtain the thickness of the filter cake.

[0019] The beneficial effects of the present invention are embodied in that filter cakes of different thicknesses can be detected by sensors of different wavebands, and at the same time, the thickness meter is arranged on the cylinder, and the accuracy of detection will not be affected by the different specific gravities of the substances to be filtered. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : Schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 : Schematic diagram of the cross-sectional structure of the present invention.

[0022] Figure 3 : Schematic diagram of the first state structure when the present invention is applied.

[0023] Figure 4 : Schematic diagram of the second state structure when the present invention is applied. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in detail below in conjunction with the embodiments. The present invention discloses a sonar filter cake thickness meter. Figure 1-Figure 2 As shown, it includes a housing 9, a transmission shaft 1 is arranged in the housing 9, and a sealing gasket 11 is arranged between the transmission shaft 1 and the housing 9 to enhance the sealing between the housing 9 and the transmission shaft 1. A detector is arranged in the transmission shaft 1, and two sonar sensors with different wavelengths are used in the present invention, a first sensor 2 and a second sensor 3.

[0025] The proximal end of the housing 9 is provided with a driving cylinder 12 for driving the transmission shaft 1 to move through a cylinder mounting plate 91, and the driving cylinder 12 is provided with a solenoid valve 13 electrically connected to the PLC. In this embodiment, two solenoid valves 13 are provided, which are respectively arranged on both sides of the driving cylinder 12. One end of the cylinder mounting plate 91 is fixed to the proximal end of the housing 9, and the cylinder shaft of the driving cylinder 12 is connected to the other end of the cylinder mounting plate 91. The cylinder shaft of the driving cylinder 12 is connected to the cylinder connecting plate 15 connected to the transmission shaft 1. The movement of the driving cylinder 12 drives the cylinder connecting plate 15 to move, thereby driving the transmission shaft 1 to rotate. The distal end of the housing 9 is provided with a detection plate 4 abutting against the transmission shaft. Specifically, the distal end of the housing 9 is provided with a mounting plate 5 for connecting the detection plate 4, and the upper end of the mounting plate 5 is connected to the upper end of the detection plate 4 through a connecting shaft.

[0026] The distal end of the transmission shaft 1 passes through the housing 9 and extends outward. The distal end of the transmission shaft 1 is provided with a baffle 7 for blocking water through a pressure cover 8. In addition, a transmission slide is disposed on the outer cover of the transmission shaft 1. A wedge block 6 is provided on the upper end of the transmission slide. The cross section of the wedge block 6 is trapezoidal. The wedge block 6 abuts against the roller 41 on the detection plate 4. In order to make the detection plate 4 move with the cylinder, the roller 41 contacts one of the trapezoidal sides of the wedge block. The driving cylinder 12 works to drive the roller 41 of the detection plate 4 to roll on the wedge block 6. In the present invention, the baffle is made of plastic material. The detection plate is made of metal.

[0027] The present invention also discloses a filter using the sonar filter cake thickness meter described above, combined with Figure 3-Figure 4 As shown, it includes a cylinder 91, a filter element 92 is arranged in the cylinder 91, the sonar filter cake thickness meter is arranged on the cylinder 91, the far end of the sonar filter cake thickness meter is arranged in the cylinder 91, and a gap is arranged between the detection plate 4 and the filter element 92.

[0028] To further illustrate the use of the thickness meter of the present invention, the present invention describes a filtering detection method of a filter machine using the above-mentioned sonar filter cake thickness meter, comprising the following steps:

[0029] S1. When the sonar filter cake thickness meter is in the initial state, the roller of its detection plate 4 is placed on one side of the trapezoidal side of the wedge block of the transmission slide, that is, the roller is on the small diameter side of the wedge block, so that the lower end of the detection plate is closely attached to the far end of the transmission shaft; so as not to block the filtration of the filter material.

[0030] S2, the material to be filtered enters from the feed port of the filter and is filtered through the filter element 92;

[0031] S3. After a period of time, the cylinder works to drive the transmission shaft to rotate. As the transmission slide plate rotates, the detection plate will roll along the trapezoidal edge of the wedge block through the roller until the detection plate is in a vertical state;

[0032] S4. As the filtration proceeds, the filter cake accumulates on the surface of the filter element. When the filter cake 93 accumulates to a certain thickness, it will squeeze the detection plate toward the transmission shaft. At this time, the thickness of the filter cake is detected by sensors with different wavelengths to obtain the thickness of the filter cake.

[0033] The filtering, slag removal, forward blowing and reverse blowing of the filter in the present invention are consistent with the prior art, so they will not be described in detail here.

[0034] Of course, there are many specific implementations of the present invention, which are not listed here one by one. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. Sonar filter cake thickness meter, It is characterized in that It comprises a shell, a transmission shaft is arranged in the shell, a detector is arranged in the transmission shaft, a driving cylinder is arranged at the proximal end of the shell, a detection plate abutting against the transmission shaft is arranged at the distal end of the shell, a cylinder shaft of the driving cylinder is connected with the transmission shaft, the driving cylinder works to drive the transmission shaft to rotate, thereby driving the detection plate to move; a transmission slide plate is sleeved at the distal end of the transmission shaft, the detection plate is arranged on a mounting plate fixed at the distal end of the shell, and the upper end of the detection plate is connected with the mounting plate via a connecting shaft; A roller is arranged at the upper end of the detection plate, and a wedge block is arranged at the upper end of the transmission slide plate. The cross section of the wedge block is trapezoidal. The roller abuts against the wedge block, and the driving cylinder works to drive the roller of the detection plate to roll on the wedge block.

2. The sonar filter cake thickness meter as claimed in claim 1, It is characterized in that A detector is arranged in the transmission shaft, and the detector includes two sonar sensors with different wavelengths.

3. The sonar filter cake thickness meter as claimed in claim 1, It is characterized in that A baffle plate for sealing the transmission shaft is arranged at the far end of the transmission shaft.

4. The sonar filter cake thickness meter according to claim 1, It is characterized in that A sealing gasket is arranged between the transmission shaft and the housing.

5. The sonar filter cake thickness meter as claimed in claim 4, It is characterized in that One of the trapezoidal sides of the wedge-shaped block contacts the roller.

6. The sonar filter cake thickness meter according to claim 1, It is characterized in that The cylinder is provided with a solenoid valve electrically connected to the PLC.

7. A filter using the sonar filter cake thickness meter as claimed in any one of claims 1 to 6, It is characterized in that It comprises a cylinder, a filter element is arranged in the cylinder, a sonar filter cake thickness meter is arranged on the cylinder, the far end of the sonar filter cake thickness meter is arranged in the cylinder, and a gap is arranged between the detection plate and the filter element.

8. A filtering detection method for a filter using the sonar filter cake thickness meter as claimed in claim 7, It is characterized in that The following steps are included: S1. When the sonar filter cake thickness meter is in the initial state, the roller of the detection plate is placed on one side of the trapezoidal side of the wedge block of the transmission slide, so that the lower end of the detection plate is closely attached to the far end of the transmission shaft; S2, the material to be filtered enters from the feed port of the filter and is filtered through the filter element; S3. After a period of time, the cylinder works to drive the transmission shaft to rotate. As the transmission slide plate rotates, the detection plate will roll along the trapezoidal edge of the wedge block through the roller until the detection plate is in a vertical state; S4. As the filtration proceeds, the filter cake accumulates on the surface of the filter element. When the filter cake accumulates to a certain thickness, it will squeeze the detection plate toward the transmission shaft; The thickness of the filter cake is detected by using sensors with different wavelengths to obtain the thickness of the filter cake.

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