Online cleaning system suitable for SAP neutralization solution preparation system

Abstract

The utility model discloses an on-line cleaning system suitable for an SAP neutralization solution preparation system, and relates to the technical field of hydrophilic resin preparation. An outlet pipeline of the CIP tank is connected to one end of a heat exchanger through a CIP liquid supply pump, a pressure sensor and a first conductivity sensor are installed on a pipeline, connected with the heat exchanger, of the CIP liquid supply pump, a PID adjusting valve is installed on the heat exchanger, and the other end of the heat exchanger is connected to the CIP tank and a cleaning spraying device installed in the neutralizing liquid preparation system. A temperature sensor and a flow sensor are mounted at an outlet of the heat exchanger, a self-absorption reflux pump is mounted on a discharge pipeline of the cleaning and spraying device, a flow switch is mounted on an inlet pipeline of the self-absorption reflux pump, and a second conductivity sensor is mounted at a water outlet of the self-absorption reflux pump. According to the online cleaning device, online effective cleaning of the neutralizing liquid preparation system is achieved, the cleaning quality is controllable, online monitoring and recording can be achieved, a discharging pipeline is prevented from being blocked, and applicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to, specifically related to a kind of online cleaning system suitable for SAP neutralization liquid preparation system. BACKGROUND

[0002] High molecular water-absorbing resin SAP is a new type of functional polymer material, can absorb several hundred times or even several thousand times of water of its own mass, and water retention is very good, under pressure, or little dehydration, after drying, the material after water absorption, water absorption capacity can recover, can be used repeatedly.In addition, SAP also has three-dimensional space network structure, neither soluble in water nor soluble in organic solvents, with ammonia absorption, urine absorption, blood absorption and organic medicine, with good fertilizer and drug sustained-release performance.Therefore, SAP has been widely used in agriculture, forestry and horticulture, physiological health, food, civil construction, daily-use chemical industry, life health care, desert reclamation and coal mine fire prevention and other aspects.

[0003] SAP can be classified according to the source of raw materials: starch, fiber, synthetic polymer.In the production of SAP, the residual material of the neutralization liquid preparation system after each batch of production will affect the content of the next batch of products, and the polymer of the residual material will also affect the quality of the next batch of products, so the neutralization liquid preparation system needs to be cleaned before batch production to avoid the residue of the previous batch of products.At present, there are some disadvantages in the production of the neutralization liquid preparation system on the market:

[0004] (1) The material after production cannot be completely utilized and discharged, causing unstable content of the next batch of products;

[0005] (2) The residual acrylic acid after production polymerizes, causing a decrease in the yield of the next batch of products;

[0006] (3) The system is washed with desalted water before batch production, but because the system is complex, different tanks and different pipe diameter equipment cannot guarantee complete washing, and the temperature of the desalted water is unstable, causing the acrylic acid to polymerize and block the discharge pipeline.

[0007] In order to solve the above problems, it is particularly necessary to design a new type of online cleaning system suitable for SAP neutralization liquid preparation system. CONTENT OF THE UTILITY MODEL

[0008] In view of the deficiencies in the prior art, the utility model aims to provide an online cleaning system suitable for SAP neutralization liquid preparation system, which has a reasonable structure design, realizes effective online cleaning, controllable cleaning quality, can be monitored and recorded online, avoids blocking the discharge pipeline, has strong practicality and is easy to popularize and use.

[0009] In order to achieve the above object, the utility model is through the following technical scheme to realize: an online cleaning system suitable for SAP neutralization liquid preparation system, including CIP tank, CIP liquid supply pump, heat exchanger, cleaning spray device, self-priming reflux pump, pressure sensor, first electric conductivity sensor, temperature sensor, flow sensor, second electric conductivity sensor and flow switch, the outlet pipeline of CIP tank is connected to one end of heat exchanger through CIP liquid supply pump, and the pipeline that CIP liquid supply pump is connected with heat exchanger is installed with pressure sensor, first electric conductivity sensor, and the other end of heat exchanger is connected to CIP tank and the cleaning spray device installed in neutralization liquid preparation system respectively, and the outlet of heat exchanger is installed with temperature sensor and flow sensor, the discharge pipeline of cleaning spray device is installed with self-priming reflux pump, and the inlet pipeline of self-priming reflux pump is installed with flow switch, and the drain of self-priming reflux pump is installed with second electric conductivity sensor.

[0010] As preferred, the CIP tank is installed with the first pneumatic valve on the inlet pipeline of desalted water inlet.

[0011] As preferred, the running flow of the self-priming reflux pump is greater than the flow of the CIP liquid supply pump, which can ensure the timely removal of cleaning liquid and effective cleaning of the cleaning object, and the flow switch installed before the self-priming reflux pump is used to protect the self-priming reflux pump and avoid damage to the mechanical seal caused by dry pumping.

[0012] As preferred, the first electric conductivity sensor installed on the outlet of the CIP liquid supply pump and the second electric conductivity sensor installed on the outlet of the self-priming reflux pump can judge the cleaning end point and cleaning effect through the supply and return electric conductivity comparison, and the cleaning quality is reliable.

[0013] As preferred, the pressure sensor and the flow sensor are interlocked with the CIP liquid supply pump, different cleaning flows are set according to different cleaning objects and formula management, and the cleaning effect is guaranteed.

[0014] As preferred, the heat exchanger is installed with the second pneumatic valve and the third pneumatic valve on the pipeline connected with the CIP tank and the cleaning spray device respectively, and the cleaning spray device is provided with multiple sets, and the inlet end of each cleaning spray device is installed with the fourth pneumatic valve.

[0015] The utility model has the advantages that: the device realizes online effective cleaning of the neutralization liquid preparation system through the connection operation of the pipeline valve, detects the cleaning effect, realizes online effective cleaning of the neutralization liquid preparation system, the cleaning quality is controllable, can be monitored and recorded online, avoids the blockage of the discharge pipeline, has strong applicability and broad application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be described in detail in combination with the drawings and specific embodiments.

[0017] Fig. 1 It is the structure schematic view of the utility model;

[0018] Fig. 2 It is the cleaning flow chart of the utility model. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0020] Referring to Figs. 1-2 , the specific embodiment adopts the following technical scheme: an online cleaning system suitable for SAP neutralizing liquid preparation system, comprising a CIP tank 1, a CIP liquid supply pump 2, a heat exchanger 3, a cleaning spray device 4, a self-suction backflow pump 5, a pressure sensor 6, a first electric conductivity sensor 7, a temperature sensor 8, a flow sensor 9, a second electric conductivity sensor 10 and a flow switch 11, a first pneumatic valve 13 is installed on the inlet pipeline of the CIP tank 1 for desalted water inlet, the outlet pipeline of the CIP tank 1 is connected to one end of the heat exchanger 3 through the CIP liquid supply pump 2, the pipeline connected between the CIP liquid supply pump 2 and the heat exchanger 3 is provided with the pressure sensor 6 and the first electric conductivity sensor 7, a PID regulating valve 12 is installed on the heat exchanger 3, the other end of the heat exchanger 3 is connected to the CIP tank 1 and the cleaning spray device 4 installed in the neutralizing liquid preparation system respectively, the pipeline connected between the heat exchanger 3, the CIP tank 1 and the cleaning spray device 4 is provided with a second pneumatic valve 14 and a third pneumatic valve 15 respectively; the outlet of the heat exchanger 3 is provided with the temperature sensor 8 and the flow sensor 9; the cleaning spray device 4 is provided with multiple sets, and the inlet end of each cleaning spray device 4 is provided with a fourth pneumatic valve 16; the discharge pipeline of the cleaning spray device 4 is provided with the self-suction backflow pump 5, the inlet pipeline of the self-suction backflow pump 5 is provided with the flow switch 11, and the drain port of the self-suction backflow pump 5 is provided with the second electric conductivity sensor 10.

[0021] It is worth noting that the running flow of the separately configured self-suction backflow pump 5 is greater than the flow of the CIP liquid supply pump 2, which can ensure the timely discharge of the cleaning liquid in the neutralizing liquid preparation system cleaning process, and ensure the effective cleaning of the cleaning object; at the same time, the flow switch 11 installed before the self-suction backflow pump 2 is used to protect the start and stop of the self-suction backflow pump 2, to avoid dry pumping causing the damage of the mechanical seal.

[0022] It is worth noting that the first electric conductivity sensor 7 installed at the outlet of the CIP liquid supply pump 2 and the second electric conductivity sensor 10 installed at the outlet of the self-suction backflow pump 5 can judge the cleaning end point and cleaning effect through the supply and return electric conductivity comparison, and the cleaning quality is reliable.

[0023] In addition, the pressure sensor 6 and the flow sensor 9 installed at the outlet of the CIP liquid supply pump 2 are interlocked with the CIP liquid supply pump 2, and the system sets different cleaning flows according to different cleaning objects and formulas to ensure the cleaning effect.

[0024] The embodiment has automatic temperature control of the CIP cleaning liquid, heat exchange through the heat exchanger 3, PID regulating valve 12 and temperature interlocking control, so that the temperature of the CIP medium is controlled in a set range, and the residual acrylic acid polymerization in the neutralizing liquid preparation system is avoided to cause the blockage of the discharge pipeline; the device is designed with a separate CIP tank 1 for buffering of desalted water inflow, so as to ensure stable liquid supply during CIP cleaning; the heat exchanger 3 is installed at the outlet of the CIP liquid supply pump 2, the heat exchanger 3 is provided with a temperature sensor 8 at the outlet, the heat exchanger refrigerant is designed with a PID regulating valve 12, the flow of the refrigerant can be adjusted according to the outlet temperature of the heat exchanger, so as to realize constant temperature control, and the precision can reach ±1℃.

[0025] In the initial stage of system operation, the related parameters are set by the PLC control system, the CIP tank 1 is automatically controlled to enter liquid, the CIP liquid supply pump 2 is started, and the circulating cooling is started at the same time; the outlet temperature of the heat exchanger 3 is controlled, and is kept at a set temperature; when the neutralizing liquid preparation system sends a cleaning demand, the CIP liquid supply pump 2 is frequency-controlled to a constant flow to a process demand flow according to the target of the cleaning demand, target cleaning is performed, and the self-priming backflow pump 5 for cleaning discharge is started and stopped according to the inlet flow switch 11; when the supply and return electric conductivity comparison is in a set range, it is judged that the cleaning is completed; the device ensures effective cleaning of the target object, online data can be detected and effective, and has a wide market application prospect.

[0026] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An on-line cleaning system suitable for use in a SAP neutralization liquor preparation system, characterized in that, The CIP tank (1), CIP liquid supply pump (2), heat exchanger (3), cleaning spray device (4), self-suction backflow pump (5), pressure sensor (6), first conductivity sensor (7), temperature sensor (8), flow sensor (9), second conductivity sensor (10) and flow switch (11) are included, the outlet pipeline of the CIP tank (1) is connected to one end of the heat exchanger (3) through the CIP liquid supply pump (2), the pipeline connected with the heat exchanger (3) is provided with the pressure sensor (6) and the first conductivity sensor (7), the heat exchanger (3) is provided with a PID regulating valve (12), the other end of the heat exchanger (3) is connected to the CIP tank (1) and the cleaning spray device (4) installed in the neutralizing liquid preparation system respectively, the outlet of the heat exchanger (3) is provided with the temperature sensor (8) and the flow sensor (9), the discharge pipeline of the cleaning spray device (4) is provided with the self-suction backflow pump (5), the inlet pipeline of the self-suction backflow pump (5) is provided with the flow switch (11), and the drain of the self-suction backflow pump (5) is provided with the second conductivity sensor (10).

2. An on-line cleaning system suitable for use in a SAP neutralization liquor preparation system according to claim 1, characterized in that, The first pneumatic valve (13) is installed on the inlet pipeline of the CIP tank (1) for desalted water.

3. An on-line cleaning system suitable for SAP neutralization liquid preparation system as claimed in claim 1, wherein, The flow of the self-suction backflow pump (5) is greater than that of the CIP liquid supply pump (2).

4. An on-line cleaning system for SAP neutralization liquid preparation system as claimed in claim 1 wherein, The second pneumatic valve (14) and the third pneumatic valve (15) are installed on the pipelines connected with the CIP tank (1) and the cleaning spray device (4) respectively.

5. An on-line cleaning system for SAP neutralization liquid preparation system as claimed in claim 1 wherein, The cleaning spray device (4) is provided with multiple sets, and the fourth pneumatic valve (16) is installed on the inlet end of each cleaning spray device (4).

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