CN108211511A - Automatic control system for centrifugal filtration of mud juice in cane sugar factory - Google Patents

Abstract

A centrifugal filtration automatic control system for mud juice in a sugarcane sugar factory, the system comprises a sugar mud sedimentation tank, a #Ⅰ centrifuge, a #Ⅱ centrifuge, a stirring tank, a storage tank, a washing water tank and a controller. The centrifugal filtration automatic control system for mud juice in a sugarcane sugar factory of the present invention adopts a sedimentation centrifuge to replace a vacuum suction filter without filter cloth to separate the mud juice into solid and liquid, realizes a new process of rapid separation, shortens the material processing time, improves production efficiency, reduces the loss of sucrose content in the filter mud and the amount of filter mud, reduces the amount of washing water, saves energy, promotes the further comprehensive utilization of the filter mud, solves the problems of high water content in the filter mud, difficulty in transportation and impact on environmental clean production, and realizes rapid solid-liquid separation of mud juice in the sugarcane sugar factory, shortens the material processing time, improves production efficiency, reduces the loss of sucrose content in the filter mud and the amount of filter mud, reduces the amount of washing water, and saves energy.

Description

Automatic Control System of Centrifugal Filtration of Sludge in Cane Sugar Factory

technical field

The invention relates to the technical field of filtering sugarcane sugar factory sludge, in particular to an automatic control system for centrifugal filtration of sugarcane sugar factory sludge.

Background technique

The development of sugarcane sugar industry in Guangxi has very superior resource advantages, location advantages, quality cost advantages and market expansion advantages. Guangxi is a key sugar-producing area in the country. It has a superior geographical location, abundant rainfall, and sufficient sunshine. It has unique geographical resources for planting sugarcane. Sugarcane production accounts for more than 62% of the country. It is the main sugarcane-producing area in the country. In recent years, Guangxi has introduced capital and technology through internal introduction and external connection to promote the development of the sugar industry to a higher level, scale and level. The sugar industry in Guangxi has developed rapidly, and a group of enterprises with strong economic strength and market have emerged. Large-scale backbone enterprises and enterprise groups with competitive advantages have continuously improved their industrial concentration and comprehensive economic strength. The overall scale and strength of enterprise production and operation rank first among all provinces and autonomous regions in the country, becoming one of the important economic pillar industries in Guangxi.

At present, most of the production processes in Guangxi sugar factories are sulfite production processes. After the sugar factory neutralizes the juice, it is divided into two parts. One part is clear and transparent clear juice, which accounts for about 70-75%. This part of the clear juice directly enters the next process. . The other part is mud juice, accounting for about 25-30%, mainly composed of sugarcane juice, silt, sugarcane bran and sediments generated by the action of clarifiers and impurities in sugarcane juice. Since there are still about 95% sugar juice in the mud juice produced during the clarification process, this part of the sugar juice must be separated to recover the sugar in it, so as to minimize the loss of sugar and improve the productivity of sugar.

For a long time, the mud filtration equipment used by almost all sugar factories in my country is the traditional vacuum suction filter with/without filter cloth and plate and frame filter press. These equipment are used as standard equipment for mud filtration equipment in sugar factories. It has been used for quite a long time in the sugar production of my country, and has also made a greater contribution to my country's sugar production. However, these equipments have the following disadvantages in the process of production and use: first, the water content of the discharged filter mud is relatively high, reaching more than 70%, which increases the amount of transportation and treatment discharged from the factory by the enterprise, and is not conducive to the cleaning of the environment; The sugar content of the filter mud is 6.3% (the sugar content of the wet filter mud is 1.9%), and the sugar loss is relatively large; the third is that the amount of washing water is relatively large when the vacuum suction filter is used to process the mud juice, reaching about 8%, which is not conducive to the subsequent process (evaporation) Material handling increases evaporation and increases energy consumption. In addition, using a vacuum suction filter without filter cloth to separate mud juice requires bagasse as a filter aid. Bagasse reacts chemically under the condition of heating at 100°C, and bringing in pigments will increase the color value of sugarcane juice. The suction filter and its The accompanying bagasse cyclone separator, water pump and its own driving equipment also consume a certain amount of energy.

According to Guangxi Sugar Net, there are more than 90 sugar factories currently in operation in Guangxi, and the neutralized mud juice of all sugar factories uses vacuum suction filters without filter cloth for solid-liquid separation. Due to the large amount of washing water and the high moisture content of the filter mud, the vacuum suction filter without filter cloth causes certain pollution to the environment, and it is difficult to transport and further comprehensive utilization is difficult, which puts a certain pressure on the environment; at the same time, due to the excessive washing water, Cause the filtrate hammer to be on the low side, increase the evaporation capacity of the subsequent process. As the country pays more and more attention to environmental protection issues in recent years, how to ensure the normal production of the enterprise while ensuring the quality and quantity of the sugar factory's products and ensuring that the discharged pollutants meet the standards has become a problem that plagues the development of sugar factories. problem.

Contents of the invention

The purpose of the present invention is to provide an automatic control system for the centrifugal filtration of sugar cane sugar factory mud juice, which realizes rapid solid-liquid separation of sugar cane sugar factory mud juice, shortens the processing time of materials, improves production efficiency, and reduces the loss of sucrose content in filter mud , Reduce the amount of washing water, save energy, promote the further comprehensive utilization of filter mud, and solve the problems of high water content of filter mud, difficult transportation and impact on environmental clean production.

Technical scheme of the present invention is as follows:

An automatic control system for centrifugal filtration of sludge in a sugarcane sugar factory, the system includes a sugar sludge sedimentation tank, Ⅰ# centrifuge, Ⅱ# centrifuge, stirring tank, storage tank, washing water tank and controller;

The sugar sludge sedimentation tank is connected to the feed port of the Ⅰ# centrifuge through a pipeline; the pipeline between the sugar sludge sedimentation tank and the Ⅰ# centrifuge is installed with a sedimentation tank valve, a delivery pump, and a delivery regulating valve in order from the end of the sugar sludge sedimentation tank and delivery flowmeter; the liquid outlet of the Ⅰ# centrifuge is connected to the storage tank through the pipeline installed with the Ⅰ# exhaust tank; the solid outlet of the Ⅰ# centrifuge is connected to the stirring tank through the conduit; the stirring tank is connected to the Ⅱ# centrifuge through the pipeline The feed port connection between the stirring tank and the Ⅱ# centrifuge is installed with a feed pump, a regulating valve and a feed flow meter in order from the end of the stirring tank; the liquid outlet of the Ⅱ# centrifuge is installed with Ⅱ# The pipeline of the exhaust tank is connected with the storage tank; the solid outlet of the Ⅱ# centrifuge is equipped with a discharge pipe to export the sludge; the mixing tank is also connected with the washing water tank through the pipeline, and the pipeline between the mixing tank and the washing water tank A washing water flow valve and a washing water flow meter are successively installed at the washing water tank end.

The controller is respectively connected with Ⅰ# centrifuge, Ⅱ# centrifuge, sedimentation tank valve, conveying pump, regulating valve, conveying flowmeter, feeding pump, regulating valve, feeding flowmeter, stirring tank, washing water flow valve and washing water Flow meter connection.

The pipeline between the washing water tank and the washing water flow valve is installed with a washing water delivery valve; the pipeline between the washing water flow valve and the washing water flow meter is installed with a washing water valve and a washing water flow valve in order from the end of the washing water flow valve. The check valve; the washing water delivery valve, the washing water valve and the washing water check valve are respectively connected with the controller.

The pipeline between the washing water flow valve and the washing water delivery valve is also connected to the pipeline between the sedimentation tank valve and the delivery pump through the pipeline installed with Ⅰ# flushing water check valve and Ⅰ# flushing water valve; The pipeline between the washing water delivery valves is also connected to the pipeline between the mixing tank and the feed pump through the pipeline installed with Ⅱ# flushing water valve and Ⅱ# flushing water check valve; Ⅰ# flushing water valve and Ⅱ# flushing water The valves are respectively connected with the controller.

A sugar solution check valve and a sugar solution valve are installed on the pipeline between the Ⅰ# exhaust tank and the storage tank, and the sugar solution valve is connected to the controller.

The upper part of the stirring tank is provided with the overflow port of the stirring tank, the bottom of the stirring tank is provided with the emptying port of the stirring tank, the stirring device is installed in the stirring tank, and the liquid level gauge of the stirring tank is also installed in the stirring tank; the stirring device and the liquid in the stirring tank The position meter is connected with the controller (37) respectively.

The upper part of the storage tank is provided with a storage tank overflow port, the lower part of the storage tank is provided with a storage tank emptying port, a storage tank liquid level gauge is installed in the storage tank, and the storage tank liquid level gauge is connected to the controller; the storage tank is also connected with a Pipeline that transports juice to processing.

The controller can be connected with an external touch screen, which can display the current operating parameters of the system and perform visual operations according to the actual situation.

The controller includes a main control module, an execution module, a flow control module, a temperature control module, a fault detection module and a storage module; the controller (37) is any one of an integrated circuit, a PLC controller or a single-chip microcomputer; the control method includes the following steps:

(1) The operator completes the relevant settings of the controller by touching the display screen, and the controller completes the normal driving of Ⅰ# centrifuge and Ⅱ# centrifuge;

(2) To operate the system, the transfer pump transfers the mud juice obtained from the sedimentation of the settling tank to the Ⅰ# centrifuge for mud juice separation. The sludge is discharged into the mixing tank;

(3) Open the washing water valve, add washing water into the mixing tank and stir, the amount of washing water added is 2.9 to 3.5 tons of washing water per hundred tons of sludge;

(4) The feed pump transports the material in the mixing tank to the Ⅱ# centrifuge for solid-liquid separation, and the separated filtered juice is tested by Brix, if the Brix > 3°BX, the filtered juice will be re-entered through the return pipe Ⅰ# centrifuge, if the hammer is less than or equal to 3°BX, it will be transported into the storage tank and mixed with the filtered juice in step (1), and then transported to the concentration tank, and the separated filter mud will be transported to produce organic fertilizer or feed; The water content of the filter mud is ≤55%, and the sugar content of the filter mud is ≤4.5%;

(5) The operating parameters of the current system are displayed in real time on the touch screen, and the amount of feed is adjusted through the controller according to the settings to control the absorption and discharge of pulp moisture.

The Ⅰ# centrifuge and Ⅱ# centrifuge of the present application are horizontal sedimentation centrifuges, and the ratio of the length of the horizontal sedimentation centrifuge to the diameter of the inner drum of the horizontal sedimentation centrifuge is equal to 4.5.

The above-mentioned horizontal decanter centrifuge can be purchased at Qingdao Guinarsan Machinery Co., Ltd., address: No. 4, Jingyi Road, Environmental Protection Industrial Park, Jimo City, Qingdao, Shandong, website: http://www.guinarsan.com/ .

The general sugar factory in Guangxi adopts the sulfurous acid production process. At present, the sludge in the sedimentation tank is treated with a vacuum suction filter without filter cloth. The vacuum suction filter without filter cloth is better than the previous vacuum suction filter with cloth. One step ahead, it can use stainless steel mesh as the filter medium instead of filter cloth, which is faster than the machine with cloth, and there is no filter cloth, so there is no water for washing filter cloth, because the water for washing filter cloth contains sugar and some non-sugar , the COD of the water is high, if it is directly discharged outside, it will cause pollution to the river, and the environmental protection treatment is also difficult, so the sugar factories have switched to non-cloth vacuum suction filters. After ten years of application, it is now found that there are some problems in the non-cloth vacuum suction filter, such as the filtered juice is not clear, and it needs to be processed through a process, which prolongs the production process time, and the filter mud has a high moisture content, about 70%. , not suitable for transportation and comprehensive utilization, and the sugar content of filter sludge is 6.3%. In order to better deal with the sedimentation tank sludge, the present invention researches and develops the use of a decanter centrifuge to dehydrate the sludge, and the effect is better than that of the non-cloth vacuum suction filter. The biggest advantage is that the centrifugal method is used for solid-liquid separation. The water content of the filter mud is lower than 55%, and the sugar content of the filter mud is lower than 4.5%. Time reduces the invisible loss of sugar, which is beneficial to sugar production. And the amount of washing water added in the mud juice filtration process of the present invention is more than 60% less than the amount of washing water added in the traditional filtration process.

Beneficial effects of the present invention:

1. The centrifugal filtration automatic control system of sugarcane sugar mill mud juice of the present invention is to use a decanter centrifuge instead of a filter cloth vacuum suction filter to carry out solid-liquid separation of mud juice, realize a new process of rapid separation, and shorten the processing time of materials , improving production efficiency;

2. Reduce the loss of sucrose in filter mud and the amount of filter mud, reduce the amount of washing water, save energy, promote the further comprehensive utilization of filter mud, and solve the problems of high water content in filter mud, difficult transportation and environmental clean production;

3. A decanter centrifuge is used instead of a vacuum suction filter without filter cloth. The material is quickly separated by the centrifugal force generated by the high-speed rotation in the decanter centrifuge. The residence time is within 1 minute, which greatly speeds up the material processing. Speed, without using bagasse as a filter aid, reducing the color value of sugarcane juice, reducing the sugar content of dry filter mud, reducing the amount of washing water, saving energy, reducing the moisture content of filter mud, and reducing filtration Reduce the transportation volume of mud and promote the clean production of the enterprise environment;

4. Due to the high water content of the filter mud, the vacuum suction filter without filter cloth is difficult to further comprehensively utilize, which puts a certain pressure on the environment; at the same time, due to the excessive washing water, the filtrate hammer is low, which increases the evaporation of the subsequent process. . The appearance of the sedimentation centrifuge will bring new ideas to the sugar clarification process, solve the problem of high water content in the filter mud that affects the environment, speed up the processing of materials, and reduce the chemical changes and sucrose content of sugar juice under high temperature conditions. conversion loss;

5. The implementation of sugar product quality, recovery, energy saving, environmental protection and consumption reduction, which is beneficial to sugar production, can bring stable and continuous economic benefits to sugar factories. Its economic benefits, social benefits and environmental benefits are significant, so it has a good application prospects.

Description of drawings

Fig. 1 is the structural representation of the centrifugal filtration automatic control system of sugarcane sugar factory mud juice of the present invention;

Fig. 2 is the process roadmap of the centrifugal filtration automatic control system of sugarcane sugar factory mud juice of the present invention;

The names of the serial numbers in the figure are:

1. Sugar sludge sedimentation tank, 2. Sedimentation tank valve, 3. Delivery pump, 4. Delivery regulating valve, 5. Delivery flow meter, 6. Ⅰ# centrifuge, 7. Ⅰ# exhaust tank, 8. Ⅰ# discharge tank Feed valve, 9, feed valve, 10, feed pump, 11, regulating valve, 12, feed flow meter, 13, Ⅱ# centrifuge, 14, Ⅱ# exhaust tank, 15, Ⅱ# discharge valve, 16. Stirring tank overflow port, 17. Stirring tank level gauge, 18. Stirring tank emptying port, 19. Stirring device, 20. Stirring tank, 21. Storage tank level gauge, 22. Storage tank overflow port, 23. Storage tank, 24. Storage tank emptying port, 25. Sugar solution check valve, 26. Sugar solution valve, 27. Washing water flow meter, 28. Washing water check valve, 29. Washing water valve, 30, Washing water flow valve, 31, washing water delivery valve, 32, washing water tank, 33, Ⅰ# flushing water check valve, 34, Ⅰ# flushing water valve, 35, Ⅱ# flushing water valve, 36, Ⅱ# flushing water Check valve, 37, controller, 38, return flow pipeline.

Detailed ways

In order to introduce the present invention in more detail, the present invention will be further described below in conjunction with the embodiments.

Example 1

An automatic control system for centrifugal filtration of sludge in a sugarcane sugar factory, the system includes a sugar sludge sedimentation tank 1, a #I centrifuge 6, a #II centrifuge 13, a stirring tank 20, a storage tank 23, a washing tank 32 and a controller 37;

The sugar sludge sedimentation tank 1 is connected with the feed port of the I# centrifuge 6 through a pipeline; the pipeline between the sugar sludge sedimentation tank 1 and the I# centrifuge 6 is sequentially equipped with sedimentation tanks from the sugar sludge sedimentation tank 1 end Valve 2, delivery pump 3, delivery regulating valve 4 and delivery flowmeter 5; the liquid outlet of I# centrifuge 6 is connected to the storage tank 23 through the pipeline installed with I# exhaust tank 7; the solid outlet of I# centrifuge 6 It is connected to the stirring tank 20 through a conduit; the stirring tank 20 is connected to the feed port of the Ⅱ# centrifuge 13 through a pipeline; the pipeline between the stirring tank 20 and the Ⅱ# centrifuge 13 is sequentially installed with feed materials from the end of the stirring tank 20 Pump 10, regulating valve 11 and feed flow meter 12; The liquid outlet of Ⅱ# centrifuge 13 is connected with storage tank 23 through the pipeline that Ⅱ# exhaust tank 14 is installed; The solid outlet of Ⅱ# centrifuge 13 is equipped with The discharge pipe that the slag is exported; the mixing tank 20 is also connected with the washing water tank 32 through a pipeline, and the washing water flow valve 30 and the washing water flow valve 30 are installed in sequence from the washing water tank 32 end on the pipeline between the mixing tank 20 and the washing water tank 32 flowmeter27.

The controller 37 is respectively connected with I# centrifuge 6, II# centrifuge 13, sedimentation tank valve 2, conveying pump 3, regulating valve 4, conveying flowmeter 5, feed pump 10, regulating valve 11, feed flowmeter 12, The stirring tank 20, the washing water flow valve 30 and the washing water flowmeter 27 are connected.

A washing water delivery valve 31 is installed on the pipeline between the washing water tank 32 and the washing water flow valve 30; The washing water valve 29 and the washing water check valve 28; the washing water delivery valve 31, the washing water valve 29 and the washing water check valve 28 are respectively connected with the controller 37.

The pipeline between the washing water flow valve 30 and the washing water delivery valve 31 is also connected to the pipeline between the sedimentation tank valve 2 and the delivery pump 3 through the pipeline equipped with I# flushing water check valve 33 and I# flushing water valve 34 The pipeline between the washing water flow valve 30 and the washing water delivery valve 31 is also installed with the pipeline between the Ⅱ# flushing water valve 35 and the Ⅱ# flushing water check valve 36 and the pipeline between the mixing tank 20 and the feed pump 10 Connection; Ⅰ# flushing water valve 34 and Ⅱ# flushing water valve 35 are connected with controller 37 respectively.

A sugar solution check valve 25 and a sugar solution valve 26 are installed on the pipeline between the I# exhaust tank 7 and the storage tank 23 , and the sugar solution valve 26 is connected to a controller 37 .

The upper part of the stirring tank 20 is provided with a stirring tank overflow port 16, the bottom of the stirring tank 20 is provided with a stirring tank emptying port 18, a stirring device 19 is installed in the stirring tank 20, and a stirring tank liquid level gauge is also installed in the stirring tank 20 17; the stirring device 19 and the liquid level gauge 17 of the stirring tank are connected to the controller 37 respectively.

The upper part of the storage tank 23 is provided with a storage tank overflow port 22, the lower part of the storage tank 23 is provided with a storage tank emptying port 24, and a storage tank liquid level gauge 21 is installed in the storage tank 23, and the storage tank liquid level gauge 21 and the controller 37 is connected; storage tank 23 is also communicated with the conveying pipe that sugar juice is transported to process.

The controller 37 can be externally connected with a touch screen, which can display the operating parameters of the current system and perform visual operations according to actual conditions.

The controller 37 includes a main control module, an execution module, a flow control module, a temperature control module, a fault detection module and a storage module; the controller 37 is any one of an integrated circuit, a PLC controller or a single-chip microcomputer; the control method includes the following steps:

(1) The operator completes the relevant settings of the controller by touching the display screen, and the controller completes the normal driving of Ⅰ# centrifuge and Ⅱ# centrifuge;

(2) To operate the system, the transfer pump transfers the mud juice obtained from the sedimentation of the settling tank to the Ⅰ# centrifuge for mud juice separation. The sludge is discharged into the mixing tank;

(3) Open the washing water valve, add washing water into the mixing tank and stir, the amount of washing water added is 2.9 to 3.5 tons of washing water per hundred tons of sludge;

(4) The feed pump transports the material in the mixing tank to the Ⅱ# centrifuge for solid-liquid separation, and the separated filtered juice is tested by Brix, if the Brix > 3°BX, the filtered juice will be re-entered into Ⅰ through the pipeline #Centrifuge, if the hammer is less than or equal to 3°BX, it will be transported into the storage tank and mixed with the filtered juice in step (1), and then transported to the concentration tank, and the separated filter mud will be transported to produce organic fertilizer or feed; the separated The water content of the filter mud is ≤55%, and the sugar content of the filter mud is ≤4.5%;

(5) The operating parameters of the current system are displayed in real time on the touch screen, and the amount of feed is adjusted through the controller according to the settings to control the absorption and discharge of pulp moisture.

The applicant conducted a comparative test in the 2016/17 cropping season, and the recorded data are as follows: the sugar factory uses a vacuum suction filter without filter cloth, the washing water volume is 7.81% (the ratio of washing water volume to cane weight), the water content of the filter mud is 70%, and the dry filtration The mud sugar content is 6.3% (the wet filter mud sugar content is 1.9%); using the centrifugal filtration automatic control system of the mud juice of the sugarcane sugar factory of the present invention, the mud juice is separated by a secondary sedimentation centrifuge, and the washing water volume is 3.06% (the washing water volume is the same as that of the sugar cane weight ratio), the moisture content of the filter mud is less than 55%, and the sugar content of the dry filter mud is less than 4.5%.

Economic benefit calculation:

The applicant can squeeze 4,000 tons of cane per day, and the total sugar cane crushed during the crushing season is 450,000 tons, and the filter mud yield is 1.5%.

(1) The benefit of reducing the sugar content of dry filter sludge to produce more sugar: 450,000 tons × 1.5% (6.3%-4,5%) × 5,000 yuan/ton = 607,500.00 yuan = 607,500 yuan (sugar price is calculated at 5,000 yuan/ton) .

(2) The benefits of saving energy by reducing the amount of washing water: due to the saving of washing water and the reduction of evaporated water in the subsequent process, benefits are generated, 450,000 tons × (7.81%-3.06%) × 12 yuan/ton of steam = 256,500 yuan = 256,500 yuan ( 1 ton of steam evaporates 1 ton of water, steam is calculated at 12 yuan/ton).

(3) The benefit generated by reducing the transportation volume due to the reduction of the filter mud moisture is 100,000 yuan.

That is, the profit generated in each cropping season is: 964,000 yuan.

The above description is not a limitation to the present invention, and the present invention is not limited to the above-mentioned examples. Those of ordinary skill in the art, within the scope of the present invention, any changes, modifications, additions or replacements should belong to the present invention scope of protection.

Claims (8)

1. a kind of centrifugal filtration automatic control system of cane sugar factory mud juice, it is characterised in that：The system includes sugared mud sedimentation basin （1）, I # centrifuges（6）, II # centrifuges（13）, agitator tank（20）, storage tank（23）, wash water tank（32）And controller（37）；

The sugar mud sedimentation basin（1）Pass through pipeline and I # centrifuges（6）Feed inlet connection；Sugared mud sedimentation basin（1）It is centrifuged with I # Machine（6）Between pipeline on from sugared mud sedimentation basin（1）End starts to be sequentially installed with sedimentation basin valve（2）, delivery pump（3）, conveying adjust Save valve（4）With transport Stream gauge（5）；I # centrifuges（6）Liquid outlet by being equipped with I # exhaust canisters（7）Pipeline and storage Tank（23）Connection；I # centrifuges（6）Solid outlet pass through conduit and agitator tank（20）Connection；Agitator tank（20）By pipeline with II # centrifuges（13）Feed inlet connection；Agitator tank（20）With II # centrifuges（13）Between pipeline on from agitator tank（20）End Start to be sequentially installed with feed pump（10）, regulating valve（11）And feed flow meter（12）；II # centrifuges（13）Liquid outlet lead to It crosses and II # exhaust canisters is installed（14）Pipeline and storage tank（23）Connection；II # centrifuges（13）Solid outlet be equipped with mud Delivery pipe derived from slag；Agitator tank（20）Also pass through pipeline and wash water tank（32）Connection, agitator tank（20）With wash water tank（32）It Between pipeline on from wash water tank（32）End starts to be sequentially installed with wash water flow valve（30）With wash water flowmeter（27）；

The controller（37）Respectively with I # centrifuges（6）, II # centrifuges（13）, sedimentation basin valve（2）, delivery pump（3）, adjust Valve（4）, transport Stream gauge（5）, feed pump（10）, regulating valve（11）, feed flow meter（12）, agitator tank（20）, wash water flow Valve（30）With wash water flowmeter（27）Connection.

2. the centrifugal filtration automatic control system of cane sugar factory mud juice according to claim 1, it is characterised in that：Wash water tank （32）With wash water flow valve（30）Between pipeline on wash water transfer valve is installed（31）；Wash water flow valve（30）With wash water flow Meter（27）Between pipeline on from wash water flow valve（30）End starts to be sequentially installed with wash water valve（29）With wash water check-valves（28）； Wash water transfer valve（31）, wash water valve（29）With wash water check-valves（28）Respectively with controller（37）Connection.

3. the centrifugal filtration automatic control system of cane sugar factory mud juice according to claim 1, it is characterised in that：Wash water stream Measure valve（30）With wash water transfer valve（31）Between pipeline also by be equipped with I # rinse Water Check Valve（33）, I # rinse water valves （34）Pipeline and sedimentation basin valve（2）And delivery pump（3）Between pipeline connection；Wash water flow valve（30）With wash water transfer valve （31）Between pipeline also by being equipped with II # rinse water valves（35）Water Check Valve is rinsed with II #（36）Pipeline and agitator tank （20）And feed pump（10）Between pipeline connection；I # rinse water valves（34）With II # rinse water valves（35）Respectively with controller （37）Connection.

4. the centrifugal filtration automatic control system of cane sugar factory mud juice according to claim 1, it is characterised in that：I # is vented Tank（7）With storage tank（23）Between pipeline on liquid glucose check-valves is installed（25）With liquid glucose valve（26）, liquid glucose valve（26）With control Device processed（37）Connection.

5. the centrifugal filtration automatic control system of cane sugar factory mud juice according to claim 1, it is characterised in that：Described Agitator tank（20）Top be provided with agitator tank overflow port（16）, agitator tank（20）Bottom be provided with agitator tank evacuation port （18）, agitator tank（20）Agitating device is inside installed（19）, agitator tank（20）Inside it is also equipped with agitator tank liquid level gauge（17）；Stirring Device（19）With agitator tank liquid level gauge（17）Respectively with controller（37）Connection.

6. the centrifugal filtration automatic control system of cane sugar factory mud juice according to claim 1, it is characterised in that：Described Storage tank（23）Top be provided with storage tank overflow port（22）, storage tank（23）Lower part be provided with storage tank evacuation port （24）, storage tank（23）Storage tank liquid level gauge is inside installed（21）, storage tank liquid level gauge（21）With controller（37）Connection；Storage Tank（23）Also it is communicated with the delivery pipe that syrup conveying is gone to processing.

7. the centrifugal filtration automatic control system of cane sugar factory mud juice according to claim 1, it is characterised in that：Described Controller（37）The external touch display screen of energy, touch display screen can show the operating parameter of current system, and according to actual conditions Carry out visualized operation.

8. the centrifugal filtration automatic control system of cane sugar factory mud juice according to claim 1, it is characterised in that：The control Device processed（37）Including main control module, execution module, flow-control module, temperature control modules, fault detection module and storage mould Block；Controller（37）It is any in integrated circuit, PLC controller or microcontroller；Control method includes the following steps：

（1）Operating personnel complete the related of controller by touch display screen and set, and controller completes I # centrifuges and II # centrifugations The normal driving of machine；

（2）The mud juice that drop pond settles is transported to I # centrifuges and carries out mud juice separation, feeding control by operating system, delivery pump 10 ~ 13m3/h is made as, isolated filtered juice delivers into storage tank, and isolated body refuse is discharged in agitator tank；

（3）Wash water valve is opened, wash water is added in into agitator tank and is stirred, wash water addition adds in 2.9~3.5 for every hundred tons of body refuses The wash water of ton；

（4）Material in agitator tank is transported to II # centrifuges and carries out separation of solid and liquid by feed pump, and isolated filtered juice is by hammer Degree detection, if 3 ° of BX of brix ＞, reenters I # centrifuges by pipeline by filtered juice, delivers into and deposit if the BX of brix≤3 ° Storage tank and step（1）Filtered juice mixing, then convey concentration tank, the conveying of isolated filter mud goes to produce organic fertilizer or feeding Material；Water content≤55% of isolated filter mud, filter mud pol≤4.5%；

（5）The operating parameter of real-time display current system in touch display screen, and adjust feeding according to controller is set by Size, the absorption of paper pulp moisture discharge is controlled.