CN114322890B - Filter cake thickness meter of candle filter and measuring method thereof - Google Patents
Filter cake thickness meter of candle filter and measuring method thereof Download PDFInfo
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- CN114322890B CN114322890B CN202111515908.2A CN202111515908A CN114322890B CN 114322890 B CN114322890 B CN 114322890B CN 202111515908 A CN202111515908 A CN 202111515908A CN 114322890 B CN114322890 B CN 114322890B
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- 239000012065 filter cake Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 68
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Filtration Of Liquid (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a filter cake thickness meter of a candle filter and a measuring method thereof, wherein the thickness meter comprises a driving motor arranged on a filter body, a measuring assembly arranged in the filter body is connected to a motor shaft of the driving motor, and the measuring assembly comprises a detecting assembly and a sensor connected with the detecting assembly through a connecting assembly; the detection assembly is provided with a signal source matched with the sensor, the driving motor works to drive the detection assembly to be abutted to the filter cake, and the sensor senses the signal source. The detection ball is driven to be abutted with the filter cake, and the sensor senses the signal source. The beneficial effects of the invention are as follows: the filter cake thickness gauge can be used for rapidly measuring the thickness of the filter cake, and can be used for effectively, rapidly and accurately detecting the filter cake, so that the problem that the thickness of the filter cake cannot be detected at any time in turbid liquid is solved, and the filtering efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of microporous filtration, and particularly relates to a filter cake thickness meter of a candle type filter and a measuring method thereof.
Background
In industrial processes, microporous filters are in wide spread use. In particular, microporous filters play an important role in the fields of pharmaceutical processing, industrial fuel cell production, solid-liquid separation, chemical particle processing, and analysis of different materials. The raw materials are filtered and then are filtered to collect clear liquid through the upper end of the filter, and filter residues are discharged through a slag discharge port. The filter core is a main component of the filter and plays a role of a heart of the filter. However, as the filtration time increases, the cake thickness on the filter element will become thicker and affect filtration. Thus, a filter cake thickness detector appears, but the existing detector can only prompt when the set filter cake thickness is reached, and can not accurately detect the filter cake thickness at any time.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a filter cake thickness meter of a candle filter and a measuring method thereof.
The aim of the invention is achieved by the following technical scheme:
the filter cake thickness meter of the candle filter comprises a driving motor arranged on a filter body, wherein a motor shaft of the driving motor is connected with a measuring assembly arranged in the filter body, and the measuring assembly comprises a detecting assembly and a sensor connected with the detecting assembly through a connecting assembly; the detection assembly is provided with a signal source matched with the sensor, the driving motor works to drive the detection assembly to be abutted to the filter cake, and the sensor senses the signal source.
Preferably, the detection assembly is a detection ball, the connection assembly is a connection rod, the detection ball is in pivot connection with the connection rod, a signal source matched with the sensor is arranged at the upper end of the detection ball, the driving motor works to drive the detection ball to be abutted to the filter cake, and the sensor senses the signal source.
Preferably, the detection assembly is a detection plate, the connection assembly is a spring, the springs are respectively arranged at the upper end and the lower end of the detection plate, a signal source matched with the sensor is arranged in the middle of the detection plate, the driving motor works to drive the detection plate to be abutted to the filter cake, and the sensor senses the signal source.
Preferably, a connecting screw is connected to a motor shaft of the driving motor, a pushing rod is arranged at the other end of the connecting screw, and the other end of the pushing rod is connected with the sensor.
Preferably, a second sensor is arranged at the proximal end of the pushing rod, a second signal source matched with the second sensor is arranged on the driving motor, and the driving motor is a servo motor with a synchronous encoder motor.
Preferably, the thickness gauge further comprises a housing arranged outside the driving motor, a guide rail is arranged in the housing, a limit rod is arranged below the pushing rod, and the lower end of the limit rod is arranged in the guide rail.
Preferably, the signal source is disposed above a pivot point of the connecting rod, and the detection ball is disposed below the pivot point.
Preferably, the detection plate is arranged right in front of the sensor, and the signal source is arranged right in front of the sensor.
Preferably, the distal end of the pushing rod is sleeved with a hose.
Preferably, the method for measuring the filter cake thickness meter according to any one of the above comprises the following steps:
s1, sending pulse to drive a motor to work through an external PLC, and simultaneously receiving the pulse number of an encoder in the drive motor through the external PLC; the propulsion rod is moved to the direction of the second signal source through the motor shaft; when the second sensor receives the feedback signal, the motor is immediately stopped to move, the pulse quantity of the initial encoder is synchronized, and then the pushing rod is moved towards the direction of the filter element through the motor shaft;
s2, immediately stopping the driving motor from advancing through signal connection between the detection assembly and the sensing signal source, and simultaneously recording the total pulse number fed back by the driving motor advancing encoder and the tooth distance of the connecting screw rod as a first travel amount; then the driving motor operates to a second signal source, and the second sensor immediately stops operating and synchronizes the pulse quantity of the initial encoder after receiving the signal source;
when the detection component is a detection ball and is in contact with the filter element, the sensor cannot sense a signal source; when the detection component is a detection plate and is in contact with the filter element, the sensor detects a signal source;
s3, filtering by a filter;
s4, after filtering for a period of time, executing the steps S1 and S2, wherein the stroke amount of the driving motor is a second stroke amount;
s5, calculating the thickness of the filter cake by recording the difference between the first travel amount and the second travel amount.
The beneficial effects of the invention are as follows: the filter cake thickness gauge can be used for rapidly measuring the thickness of the filter cake, and the filter cake gauge can be effectively, rapidly and accurately detected, so that the filtering efficiency is improved.
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, so that the technical scheme of the present invention can be understood and mastered more easily.
Drawings
FIG. 1 is a schematic view of the structural relationship between the filter element and the filter element in the initial state of the invention, wherein the detection component is a detection ball.
Fig. 2 is a schematic diagram of the motion measurement of fig. 1 according to the present invention.
FIG. 3 is a schematic view of the structural relationship between the filter element and the filter element in the initial state of the invention, wherein the detection component is a detection plate.
Fig. 4 is a schematic view of the structure of the present invention in the motion measurement of fig. 3.
FIG. 5 is a schematic view of the structure of the invention connected with a filter.
The device comprises a driving motor 1, a shell 12, an access port 13, a connecting flange 14, a filter element 8, a filter cake 81, a connecting screw 2, a pushing rod 3, a sensor 4, a sensor 31, a second sensor 11, a second signal source 42, a front cover 5, a hose 6, a detection ball 61, a detection plate 62, a detection plate signal source 63, a spring 64, a limit rod 32 and a guide rail 7.
Detailed Description
The invention discloses a filter cake thickness meter of a candle filter, which is shown in combination with figures 1-5 and comprises a driving motor 1 arranged on a filter body 82, wherein a shell 12 is arranged outside the driving motor 1, and the shell 12 is connected with the filter body 82 through a connecting flange 14. An access opening 13 is formed in the upper portion of the housing 12. The motor shaft of the driving motor 1 is connected with a measuring component arranged in the filter body, and the driving motor 1 drives the measuring component to detect the thickness of the filter cake 81 on the filter element 8.
Specifically, the motor shaft is connected with the connecting screw rod 2, the other end of the connecting screw rod 2 is provided with a pushing rod 3, and the other end of the pushing rod 3 is connected with a sensor 4. The proximal end of the pushing rod 3 is provided with a second sensor 31, and the driving motor 1 is provided with a second signal source 11 matched with the second sensor 31. The second sensor 31 is in a distance sensing with the second signal source 11, and when the second signal source 11 approaches the second sensor 31, the driving motor 1 will immediately stop working and the initial encoder pulse quantity is taken as a reference point.
The sensor 4 is arranged in the sensor housing, a front cover 42 is arranged at the front end of the sensor 4, and a sealing ring 41 for sealing is arranged between the front cover 42 and the sensor housing. The distal end of the front plate 42 is connected to a probe assembly via a connector assembly. The detection assembly may be a detection plate 62 or a detection sphere 6.
When the detecting component is a detecting ball 6, the detecting ball 6 is connected with a front cover 42 on the sensor through a connecting rod. The upper end of the detection ball 6 is provided with a signal source 61 for cooperation with the sensor 4. The signal source 61 is arranged above the pivot point of the connecting rod, and the detection ball 6 is arranged below the pivot point. In the initial state, the signal source 61 and the sensing receiving end of the sensor 4 are on the same straight line, and the external tangential extension line of the detecting ball 6 is arranged outside the pivot point, that is, in the initial state, the distance between the outer edge of the detecting ball 6 and the filter element is smaller than the distance between the pivot point and the filter element, so as to ensure that the detecting ball 6 will abut against the filter element or the filter cake earlier than the pivot point in the advancing process.
The driving motor 1 works to drive the detecting ball 6 to abut against the filter cake or the filter core, and the sensor 4 senses the signal source 61 to confirm whether the detecting ball 6 abuts against the filter cake or the filter core. The signal source 61 and the sensor 4 are in (distance) signal receiving and sensing, and when the sensor 4 monitors the signal source 61, the driving motor continues to work. When the detection ball 6 contacts the filter element or the filter cake, the detection plate 6 stops, the upper spring and the lower spring shrink pushing rod continue to operate until the detection ball 6 rotates around the pivot point, at the moment, the signal source 61 moves along with the detection ball, the sensor 4 cannot sense the signal source 61, the detection ball 6 is judged to contact the filter element or the filter cake, and at the moment, the driving motor 1 immediately stops advancing and records data.
When the probe assembly is a probe plate 62, the probe plate 62 is connected to the cover plate 42 by upper and lower springs 64. The detection plate 62Intermediate partA probe card signal source 63 is provided for cooperation with the sensor 4. The detection plate signal source 63 is disposed directly in front of the sensor 4, and the detection plate 62 is disposed directly in front of the sensor 4. In the initial state, the detection plate signal source 63 and the sensing receiving end of the sensor 4 are in the same straight line, the detection plate signal source 63 is far away from the sensor 4 due to the spring thrust, that is, in the initial state, the outer edge of the detection plate 62 is connected to the filter elementThe distance between the sensor 4 and the detection plate signal source 63 is greater than the distance between the sensor 4 and the detection plate signal source 63 to ensure that the detection plate 62 will have a margin of empty filter cartridges or filter cakes than the sensor 4 during travel.
For better control and stabilization of the driving motor 1, a guide rail 7 is arranged in the housing 12, a limit rod 32 is arranged below the pushing rod 3, and the lower end of the limit rod 32 is arranged in the guide rail 7. At the same time, the limit rod 32 also better controls the backward progress of the pushing rod 3. To further protect the propulsion rod 3, the distal end of the propulsion rod 3 is sleeved with a hose 5. The hose 5 is arranged between the connecting flange 14 and the sensor housing 4.
The invention also discloses a measuring method of the filter cake thickness meter, which comprises the following steps:
s1, before filtering, an external PLC sends a pulse to drive the motor 1 to work, the external PLC simultaneously receives the pulse number of an encoder in the motor 1, the pushing rod 3 moves towards the direction of the second signal source 11 through the motor shaft 2, and the second sensor 31 feeds back to the signal source 11 to immediately stop the motor movement and initiate the pulse quantity of the encoder. Then the propelling rod 3 moves towards the direction of the filter element through the motor shaft 2;
and S2, when the detection component is in contact with the filter element 8, the control signal is fed back by detecting whether the signal source exists between the sensor 4 and the signal source. And the control signal is fed back to the PLC through the sensor 4, and the driving motor 1 immediately stops advancing; meanwhile, the total pulse fed back by the forward encoder of the driving motor 1 is counted to calculate the first stroke amount of the stroke record. Then the drive motor 1 drives the connecting screw 2 to run towards the second signal 11, drives the pushing rod 3 to retract, and immediately stops running and synchronizes the initial encoder pulse amount when the second sensor 31 senses the second signal source 11.
S3, filtering by a filter;
s4, after filtering for a period of time, executing the steps S1 and S2 again, and recording the stroke amount of the driving motor as a second stroke amount;
s5, recording the difference between the first stroke amount and the second stroke amount, so that the thickness of the filter cake can be rapidly calculated.
The invention can detect the thickness of the filter cake timely and at any time, thereby more effectively improving the filtration efficiency.
The invention has various embodiments, and all technical schemes formed by equivalent transformation or equivalent transformation fall within the protection scope of the invention.
Claims (6)
1. The measuring method of the filter cake thickness meter of the candle filter is characterized by comprising the following steps of: the filter cake thickness meter of the candle filter comprises a driving motor arranged on a filter body, wherein a motor shaft of the driving motor is connected with a measuring assembly arranged in the filter body, and the measuring assembly comprises a detecting assembly and a sensor connected with the detecting assembly through a connecting assembly; the detection assembly is provided with a signal source matched with the sensor, and the driving motor works to drive the detection assembly to be abutted with the filter cake and sense the signal source through the sensor;
the detection assembly is a detection ball, the connection assembly is a connection rod, the detection ball is in pivot connection with the connection rod, a signal source matched with the sensor is arranged at the upper end of the detection ball, the driving motor works to drive the detection ball to abut against the filter cake, and the signal source is sensed through the sensor;
the detection assembly is a detection plate, the connection assembly is a spring, the springs are respectively arranged at the upper end and the lower end of the detection plate, a signal source matched with the sensor is arranged in the middle of the detection plate, the driving motor works to drive the detection plate to abut against the filter cake, and the sensor senses the signal source;
a motor shaft of the driving motor is connected with a connecting screw rod, the other end of the connecting screw rod is provided with a pushing rod, and the other end of the pushing rod is connected with the sensor;
the measuring method comprises the following steps:
s1, sending pulse to drive a motor to work through an external PLC, and simultaneously receiving the pulse number of an encoder in the drive motor through the external PLC; the propulsion rod is moved to the direction of the second signal source through the motor shaft; when the second sensor receives the feedback signal, the motor is immediately stopped to move, the pulse quantity of the initial encoder is synchronized, and then the pushing rod is moved towards the direction of the filter element through the motor shaft;
s2, immediately stopping the driving motor from advancing through signal connection between the detection assembly and the sensing signal source, and simultaneously recording the total pulse number fed back by the driving motor advancing encoder and the tooth distance of the connecting screw rod as a first travel amount; then the driving motor operates to a second signal source, and the second sensor immediately stops operating and synchronizes the pulse quantity of the initial encoder after receiving the signal source;
when the detection component is a detection ball and is in contact with the filter element, the sensor cannot sense a signal source; when the detection component is a detection plate and is in contact with the filter element, the sensor detects a signal source;
s3, filtering by a filter;
s4, after filtering for a period of time, executing the steps S1 and S2, wherein the stroke amount of the driving motor is a second stroke amount;
s5, calculating the thickness of the filter cake by recording the difference between the first travel amount and the second travel amount.
2. A method of measuring filter cake thickness of a candle filter as set forth in claim 1, wherein: the proximal end of the pushing rod is provided with a second sensor, the driving motor is provided with a second signal source matched with the second sensor, and the driving motor is a servo motor with a synchronous encoder motor.
3. A method of measuring cake thickness of candle filter as claimed in claim 2, wherein: the thickness gauge is characterized by further comprising a shell arranged outside the driving motor, a guide rail is arranged in the shell, a limit rod is arranged below the pushing rod, and the lower end of the limit rod is arranged in the guide rail.
4. A method of measuring filter cake thickness of a candle filter as claimed in claim 3, wherein: the signal source is arranged above the pivot point of the connecting rod, and the detection ball is arranged below the pivot point.
5. A method of measuring cake thickness of a candle filter as set forth in claim 4, wherein: the detection plate is arranged right in front of the sensor, and the signal source is arranged right in front of the sensor.
6. A method of measuring cake thickness of a candle filter as set forth in claim 5, wherein: the distal end of the pushing rod is sleeved with a hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515908.2A CN114322890B (en) | 2021-12-13 | 2021-12-13 | Filter cake thickness meter of candle filter and measuring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515908.2A CN114322890B (en) | 2021-12-13 | 2021-12-13 | Filter cake thickness meter of candle filter and measuring method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114322890A CN114322890A (en) | 2022-04-12 |
| CN114322890B true CN114322890B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111515908.2A Active CN114322890B (en) | 2021-12-13 | 2021-12-13 | Filter cake thickness meter of candle filter and measuring method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0396452A2 (en) * | 1989-05-01 | 1990-11-07 | Measurex Corporation | Caliper sensor of the contacting type |
| WO2015044475A1 (en) * | 2013-09-27 | 2015-04-02 | Tecnopraim, S.L. | Device for measuring wear of metal surfaces |
| CN204388826U (en) * | 2015-01-23 | 2015-06-10 | 扬州恒佳机械有限公司 | A kind of board thickness measuring device |
| CN205965247U (en) * | 2016-08-11 | 2017-02-22 | 丹东丹银矿冶有限责任公司 | Monitoring filter filter cake thickness's device |
| CN111076686A (en) * | 2020-01-06 | 2020-04-28 | 威孔过滤科技（苏州）有限公司 | Sonar filter cake thickness gauge and application thereof |
-
2021
- 2021-12-13 CN CN202111515908.2A patent/CN114322890B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0396452A2 (en) * | 1989-05-01 | 1990-11-07 | Measurex Corporation | Caliper sensor of the contacting type |
| WO2015044475A1 (en) * | 2013-09-27 | 2015-04-02 | Tecnopraim, S.L. | Device for measuring wear of metal surfaces |
| CN204388826U (en) * | 2015-01-23 | 2015-06-10 | 扬州恒佳机械有限公司 | A kind of board thickness measuring device |
| CN205965247U (en) * | 2016-08-11 | 2017-02-22 | 丹东丹银矿冶有限责任公司 | Monitoring filter filter cake thickness's device |
| CN111076686A (en) * | 2020-01-06 | 2020-04-28 | 威孔过滤科技（苏州）有限公司 | Sonar filter cake thickness gauge and application thereof |
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| CN114322890A (en) | 2022-04-12 |
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