CN111905444A - Ceramic filter double pump double barrel automatic drainage device - Google Patents

Abstract

The invention discloses a dual-pump and dual-barrel automatic liquid-draining device for a ceramic filter. It is a kind of supporting equipment of ceramic filter, which solves the technical problem of automatic discharge of its filtrate. The technical solution is to have a distribution valve device, a vacuum barrel, a vacuum pump, and a PLC controller. The vacuum barrel is composed of an upper vacuum barrel (4) and a lower vacuum barrel (5), and a pipeline clapboard (10) is connected between the upper and lower vacuum barrels. The bottom of the lower vacuum barrel (5) is provided with an outer drain pipe clapboard (6). The device of the invention can be matched with the existing ceramic filter, is automatic, efficient and safe, greatly reduces the failure rate and improves the productivity.

Description

Ceramic filter double pump double barrel automatic drainage device

technical field

The invention discloses a liquid draining device, in particular a dual-pump and double-barrel automatic liquid draining device for a ceramic filter.

Background technique

Ceramic filter is a modern ore dressing and dewatering equipment integrating electromechanical, microporous ceramics, automatic control, ultrasonic cleaning and other high-tech. The ceramic filter is mainly composed of a host system, a cleaning system, a dehydration system and a microcomputer automatic control system. The dehydration system is also called a gas-liquid distribution system. Its purpose is to provide the equipment with the vacuum environment required for production and to extract the ceramic filter plate. The filtrate is discharged through the vacuum barrel.

Since the introduction of ceramic filters, improvements and innovations in their dewatering systems have continued. For example, the application number is CN201811608693.7 "An automatic liquid discharge device for a vacuum ceramic filter", the main point of which is a vacuum tank, a liquid level sensor and a liquid level tube are set to realize automatic discharge. The innovation is in the level sensor. Another example is the "Ceramic Filter Automatic Drainage Device" with the application number of CN201821325668.3. The main point is to uniformly vacuumize, separate the liquid storage tank, and also set up a water level observation tube. Its innovation lies in the liquid storage tank separation.

When the current ceramic filter is running, the filtrate flows into the vacuum barrel through the ceramic plate micropores and the distribution valve under the condition of negative pressure, and the filtrate in the vacuum is discharged through the filtrate pump. Because the vacuum pressure is generally -0.092 MPa, in order to compensate the NPSH of the filtrate pump, the filtrate pump and the vacuum barrel must have a height difference of 2.5 to 3.5 meters, and there are certain requirements for the use height, which is often a problem. In addition, relying on water level sensing to control reliability is not the best way, and its damage rate is very high, which directly affects the stability of production efficiency.

In view of the existing problems, the company's technical personnel have carried out technological innovation and exploration, and through continuous efforts, finally obtained this technical solution, which has been industrialized in practice.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an automatic liquid draining device for a ceramic filter with a PLC controller as the core and a dual-pump and double-barrel configuration.

The technical scheme for realizing the present invention is as follows: a dual-pump and double-barrel automatic liquid draining device for a ceramic filter, the structure is that the vacuum barrel is composed of an upper vacuum barrel 4 and a lower vacuum barrel 5, and a pipeline clapboard 10 is connected between the upper and lower vacuum barrels. , and the bottom of the lower vacuum barrel 5 is provided with an outer row pipe clapboard 6 . The upper vacuum barrel 4 and the lower vacuum barrel 5 are connected with a communicating pipeline, and a conducting valve 3 is installed on the pipeline. An upper vacuum pump 7 is installed on the upper vacuum barrel 4 , a lower vacuum pump 8 is installed on the lower vacuum barrel 5 by connecting a three-way valve 9 , and the upper vacuum pump and the lower vacuum pump are connected to a PLC programmable controller 11 . The top of the upper vacuum barrel 4 is connected to the distribution valve device 1 through the suction valve 2 .

The use method of the double pump double barrel automatic drainage device of the ceramic filter is as follows:

Step 1. According to the processing capacity of the ceramic filter, program the programmable controller 11 to control the on-off time and operation sequence of the upper and lower vacuum pumps;

Step 2, open the suction valve 2, connect the distribution valve device 1, and close the conduction valve 3;

Step 3, the ceramic filter starts to operate, the filtrate enters the distribution valve device, starts the lower vacuum pump 8, closes the external discharge pipeline flap 6, the filtrate first enters the upper vacuum bucket 4, and then enters the lower vacuum bucket 5 through the pipeline flap 10;

Step 4. When the filtrate is filled with the lower vacuum bucket 5, and when the upper limit is reached, the upper vacuum pump 7 is started with the set time as the control factor, causing the pipeline flap 10 to be closed, and the filtrate stays in the upper vacuum bucket; stop the lower vacuum pump running, The filtrate in the lower vacuum barrel is automatically discharged out through the lower outer discharge pipe clapboard 6;

Step 5. After the filtrate in the lower vacuum bucket is exhausted, start the lower vacuum pump 8, resulting in closing the lower outer discharge pipeline flapper 6; stop the operation of the upper vacuum pump, open the pipeline flapper (10), and let the filtrate in the upper vacuum bucket enter the lower vacuum again bucket, and discharge the filtrate repeatedly in this way;

The above-mentioned discharge process is completely completed by the programmable controller 11 automatically controlling the upper vacuum pump and the lower vacuum pump, subject to the control time factor, without any liquid level sensing device.

The beneficial effects of the present invention are that: the device does not need to install the vacuum barrel at a high place, nor does it need a filtrate pump, thereby simplifying the dehydration system; the requirements for the height difference on site are not high, as long as it can meet the normal requirements of the drainage cylinder and equipment height. The main parts of the dehydration system are vacuum pump and pneumatic ball valve. These parts are not easy to be damaged within one year. In the normal service life range, the cost of accessories is greatly reduced compared with the existing technology; compared with the existing device, the production cost can be directly and greatly reduced. Reducing the equipment failure rate can greatly improve the operation rate of the equipment and greatly improve the production safety.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

In the figure, 1 is the distribution valve device, 2 is the suction valve, 3 is the conduction valve, 4 is the upper vacuum barrel, 5 is the lower vacuum barrel, 6 is the lower outer pipe clapper, 7 is the upper vacuum pump, 8 is the lower vacuum pump, 9 is a three-way valve, 10 is a pipe clapper, and 11 is a programmable controller.

The drawings of the present invention are not limited only to the submitted Figure 1 .

Detailed ways

Below in conjunction with the accompanying drawings of the present invention, the specific embodiments of the present invention are described as follows:

Example: ceramic filter double pump double barrel automatic drainage device.

The specific structure is that the vacuum barrel is composed of an upper vacuum barrel 4 and a lower vacuum barrel 5, a pipeline clapper 10 is connected between the upper and lower vacuum barrels, and an outer discharge pipeline clapper 6 is arranged at the bottom of the lower vacuum barrel 5. The upper vacuum barrel 4 and the lower vacuum barrel 5 are connected with a communicating pipeline, and a conducting valve 3 is installed on the pipeline. An upper vacuum pump 7 is installed on the upper vacuum barrel 4 , a lower vacuum pump 8 is installed on the lower vacuum barrel 5 by connecting a three-way valve 9 , and the upper vacuum pump and the lower vacuum pump are connected to a PLC programmable controller 11 . The top of the upper vacuum barrel 4 is connected to the distribution valve device 1 through the suction valve 2 .

The use method of the double pump double barrel automatic drainage device of the ceramic filter is as follows:

Step 1. According to the processing capacity of the ceramic filter, program the programmable controller 11 to control the on-off time and operation sequence of the upper and lower vacuum pumps;

Step 2, open the suction valve 2, connect the distribution valve device 1, and close the conduction valve 3;

Step 3, the ceramic filter is started to operate, the filtrate enters the distribution valve device, the lower vacuum pump 8 is started, the filtrate first enters the upper vacuum barrel 4, and then enters the lower vacuum barrel 5 through the pipeline clapboard 10;

Step 4. When the filtrate is filled with the lower vacuum barrel 5, and when the upper limit is reached, the upper vacuum pump 7 is started with the set time as the control factor, causing the pipeline flap 10 to be closed, and the filtrate stays in the upper vacuum barrel until the upper liquid level limit. ; Stop the operation of the lower vacuum pump, and the filtrate in the lower vacuum barrel is automatically discharged through the lower outer discharge pipe flap 6;

Step 5. After the filtrate in the lower vacuum barrel is discharged in place, start the lower vacuum pump 8 according to the set time, so as to close the lower outer discharge pipe flap 6; stop the operation of the upper vacuum pump, and let the filtrate in the upper vacuum barrel enter again Lower the vacuum barrel, and discharge the filtrate repeatedly in this way;

The above-mentioned discharge process is completely completed by the programmable controller 11 automatically controlling the operation of the upper vacuum pump and the lower vacuum pump, subject to the control time factor, without any liquid level sensing device.

Taking a 60 square meter ceramic filter as an example, the vacuum degree of the vacuum barrel can be controlled at about -0.07 MPa. The vacuum pump model can be selected from 2BV5121 (7.5KW), and the programmable controller PLC can be selected from K7M-DR60U. Through the operation control of the upper and lower vacuum pumps Time setting to realize automatic timing cycle to discharge filtrate. A power supply is connected to the programmable controller PLC.

Conduction valve 3 is only used for temporary emergency or maintenance.

The pipeline clapper belongs to an existing vacuum pipeline valve, which uses vacuum negative pressure to control the switch, and can be purchased and used in the market.

Claims (5)

1. Ceramic filter double-pump double-barrel automatic drainage device, the structure has distribution valve device, vacuum barrel, vacuum pump, PLC controller, it is characterized in that: the vacuum barrel is composed of an upper vacuum barrel (4) and a lower vacuum barrel (5). The upper and lower vacuum barrels are connected with a pipe clapboard (10), and an outer discharge pipe clapboard (6) is arranged at the bottom of the lower vacuum barrel (5). 2. The dual-pump and dual-barrel automatic liquid draining device for a ceramic filter according to claim 1, wherein the upper vacuum barrel (4) and the lower vacuum barrel (5) are connected with a pipeline that communicates with each other, and is installed on the pipeline There is a conducting valve (3). 3. The dual-pump and dual-barrel automatic liquid draining device for a ceramic filter according to claim 1, characterized in that: an upper vacuum pump (7) is installed on the upper vacuum barrel (4), and the lower vacuum barrel (5) is connected by The three-way valve (9) is provided with a lower vacuum pump (8), and the upper vacuum pump and the lower vacuum pump are connected to a PLC programmable controller (11). 4. The dual-pump and dual-barrel automatic liquid draining device for a ceramic filter according to claim 1, or claim 2, or claim 3, wherein the suction valve (2) passes through the top of the upper vacuum barrel (4). A distribution valve device (1) is coupled. 5. According to claim 1, or claim 2, or claim 3, or claim 4, the ceramic filter double-pump double-barrel automatic drainage device is characterized in that: the use method steps are as follows: Step 1. According to the processing capacity of the ceramic filter, program the programmable controller (11) to control the on-off time and operation sequence of the upper and lower vacuum pumps; Step 2: Open the suction valve (2), connect the distribution valve device (1), and close the conduction valve (3); Step 3. The ceramic filter starts to run, the filtrate enters the distribution valve device, starts the lower vacuum pump (8), closes the external discharge pipe flap (6), the filtrate first enters the upper vacuum bucket (4), and then passes through the pipeline flap (10). in the vacuum barrel (5); Step 4. When the filtrate is filled with the lower vacuum bucket (5) and reaches the upper limit, start the upper vacuum pump (7), causing the pipeline flap (10) to close, and the filtrate stays in the upper vacuum bucket; stop the operation of the lower vacuum pump, and the lower vacuum bucket The middle filtrate is automatically discharged through the lower discharge pipe clapboard (6); Step 5. After the filtrate in the lower vacuum bucket is exhausted, start the lower vacuum pump (8), resulting in the closing of the lower outer discharge pipeline flap (6); stop the operation of the upper vacuum pump, and open the pipeline flap (10) to let the filtrate in the upper vacuum bucket. Then enter the lower vacuum barrel, and discharge the filtrate repeatedly in this way; The above discharge process is completely completed by the programmable controller (11) automatically controlling the upper vacuum pump and the lower vacuum pump, subject to the control time factor, without any induction device.

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