Rinse system and rinse method for regulating the desensitization of emulsion gelatin photographic elements

Abstract

The application discloses a rinsing system and method for regulating the acid-removing effect of latex coagulation film. The film to be rinsed is output from the right end of the system after passing through 1- multiple rinsing tanks in sequence. After multiple times of thinning and rinsing, the acid content of the film is gradually reduced, and the acid content of the circulating water in the rinsing tank is also gradually reduced. The acid-free supplementary water is input into the system from the supplementary water pump inlet of the rear rinsing tank, and is output from the front rinsing tank after passing through the rear rinsing tank to the front rinsing tank in sequence. From the front rinsing tank to the last rinsing tank, the acid content distribution trend of the supplementary water is consistent with the acid content distribution trend of the circulating water, and a large concentration difference is maintained between the two in each tank, which is beneficial to fully exert the acid-removing effect of the supplementary water and achieve the purpose of water saving. Changing the flow of the supplementary water can change the acid concentration difference between the supplementary water and the circulating water in each tank, and change the acid-removing effect of the film.

Description

Technical Field

[0001] This invention relates to the field of rubber raw material processing technology, particularly to the rinsing technology of latex coagulated sheets, specifically to a rinsing system and rinsing method for controlling the acid removal effect of latex coagulated sheets. Background Technology

[0002] In the production of natural latex sheets, acid coagulation is a crucial step. By adding acidic substances, the latex transforms from a liquid to a gel state, facilitating subsequent processing. The coagulated latex then undergoes a calendering process, during which a rinsing and deacidification process is employed to remove residual acid.

[0003] Traditional acid removal methods primarily involve immersing calendered latex sheets in a water tank or basin. The water in the tank is used to help remove residual acid from the film. The longer the film is in contact with water, the more acid can theoretically be transferred away more effectively. This process typically involves repeatedly immersing and removing the film in water to gradually reduce the acid content until it reaches an acceptable level.

[0004] However, traditional methods have some obvious limitations. First, due to water conservation considerations, these rinsing systems often operate in a closed-loop mode, meaning that fresh water is not added to the system and wastewater is not easily discharged, or even if it is added, it is only in small amounts. This means that over time, the rinse water used each time actually accumulates the acid from previous rinses, and its own acid concentration gradually increases. As a result, although this setup may be effective initially, as the number of cycles increases, the rinsing effect will significantly decrease, and eventually it may no longer be able to effectively remove acid.

[0005] Furthermore, due to the continuous variation in acid concentration in the rinsing water, it is difficult to guarantee consistent product quality each time. The amount of residual acid on the film may fluctuate between different batches, posing a challenge to product stability. This uncertainty is clearly unacceptable, especially for applications requiring high material purity. Therefore, traditional latex film rinsing and acid removal results are unstable, with the residual acid content of the film varying with the acid concentration of the rinsing water. Summary of the Invention

[0006] To address the shortcomings and problems of the existing technology, this invention provides a more scientific and rational rinsing process: an online detection method and system for the acid content of rinsing water, dynamically adjusting the acid content using supplementary water flow to stably control the deacidification effect on the film after rinsing. This achieves both stable control of the film rinsing and deacidification process quality and efficient use of rinsing water for water conservation. The balance between the acid content and rinsing water consumption after film rinsing can be arbitrarily adjusted as needed. Specifically, this invention is implemented as follows:

[0007] A rinsing system for regulating the acid removal effect of latex-cured film includes: a multi-stage rinsing tank consisting of several rinsing tanks arranged in series along the film transport path, each with a built-in circulating water pump for sequential rinsing and transport of the film; overflow tanks located below the overflow drain of each rinsing tank to collect overflow water; a replenishment water pump placed inside the rinsing tank to add rinsing water overflowing from subsequent rinsing tanks to preceding rinsing tanks; and several sets of sequential rinsing and replenishment water mechanisms, each arranged above each rinsing tank, with one end connected to the replenishment system for that stage. The pump inlet is connected to the overflow tank of the next stage, and can clean the film in the previous rinsing tank. The final stage supplementary water pump is connected to an external water source. The pressure roller mechanism is arranged above the feed end of each rinsing tank to press the film thin and feed it into the rinsing tank. The acid content sensor is installed at the bottom of the feed end of the first rinsing tank to detect the acid content of the water. The controller is connected to the acid content sensor, the pressure roller mechanism, the supplementary water pump, and the built-in circulating water pump, and can control the operating status of the pressure roller mechanism, the supplementary water pump, and the built-in circulating water pump.

[0008] Furthermore, the pressure roller mechanism includes a pressure roller pair, a roller drive motor, and a pressure roller shaft encoder; the roller drive motor is connected to the active roller shaft of the pressure roller pair through a reduction gear, and the pressure roller shaft encoder is installed on one of the roller shafts and connected to a controller, which can adjust the conveying speed of the pressure roller pair under the control of the controller; the gap between each pair of pressure rollers decreases sequentially along the conveying direction of the film, which can gradually press the film thinner.

[0009] Furthermore, the serial washing and water replenishment mechanism includes a spray device located in the middle and rear section above each rinsing tank, with the spray range covering the portion of the film exposed above the water surface; it also includes a circulating water pipeline, a circulating water pump in the rinsing tank, one end of the circulating water pipeline being connected to the bottom of the feed end of the rinsing tank, and the other end being connected to the bottom of the discharge end of the tank, so that the rinsing water in the tank flows from the feed end to the discharge end under the combined action of the circulating water pump.

[0010] Furthermore, the controller can detect the actual values ​​of the pressure roller speed and acid content through sensors, compare them with preset target values, and generate an error signal; and based on the error signal, it can adjust the speed of the pressing roller and / or the discharge of the supplementary water pump so that the actual values ​​of the pressure roller speed and acid content approach or equal the preset target values.

[0011] Furthermore, the controller can adjust the rotation speed of the current stage pressing roller based on the speed parameters of the pressing roller in the previous stage rinsing tank and the specific compression ratio parameters of the current stage film thickness, and adjust the rotation speed of the next stage pressing roller based on the speed parameters of the pressing roller in the current stage rinsing tank and the specific compression ratio parameters of the next stage film thickness.

[0012] Another aspect of the present invention provides a rinsing method for controlling the acid removal effect of latex coagulated film: the film is in strip form and passes sequentially through a series of multi-stage rinsing tanks from the first stage to the last stage. The last stage of the multi-stage rinsing tank is connected to an external water source, and the overflow water from the first stage is discharged and treated uniformly; a serial rinsing connection is formed in which the overflow water of each rinsing tank replenishes the water of the next stage rinsing tank; each rinsing tank is equipped with a pressing roller at the feed end for conveying the film and pressing the film thinner stage by stage; the film will... The water is rinsed or sprayed by overflow water from the subsequent stage until the final stage is rinsed or sprayed by an external water source; the acid content in each rinsing tank is controlled in real time, the speed of the pressing rollers in each rinsing tank is adjustable and controllable, the drainage volume of the circulating water pump in each rinsing tank is adjustable and controllable, and the drainage volume of the replenishment pump in each rinsing tank to supplement the overflow water from the subsequent rinsing tank is adjustable and controllable; the acid content in the rinsing tank can be adjusted by the mutual regulation between the speed of the pressing rollers, the drainage volume of the circulating water pump and the drainage volume of the replenishment pump.

[0013] Furthermore, the adjustment steps for the pressure rollers include: detecting the actual rotational speed n of the foremost pressure roller via an encoder on the pressure roller shaft. 1m , and the set speed value n 1s The error signal e is given after comparison. n1 Based on e n1 Output control signal a1, which controls the rotational speed n1 of the pressing roller via the roller drive motor to reach the set rotational speed n. 1s Based on the rotational speed n1 of the pressing rollers and the interstage compression ratio k of the film thickness... n Parameter value output signal a n+1 The rotational speed n of the pressing roller is controlled by the roller drive motor. n+1 .

[0014] Furthermore, the control steps for the circulating water pump include: adjusting the rotational speed n of the pressing rollers. n Output signal b n Control the drainage volume Q of the circulating water pump rn This ensures that the flow rate of the rinsing water in the rinsing tank matches the forward movement speed of the film; similarly, based on the rotational speed n...n+1 Output signal b n+1 Control the drainage volume Q of the circulating water pump rn+1 .

[0015] Furthermore, the acid content control steps include: the acid content sensor detecting the actual acid content S in the circulating water of the first-stage rinsing tank. 1m This value is related to the set acid content value S. 1s The error signal e is given after comparison. S1 Based on e S1 Output signal c controls the drainage volume Q of each make-up water pump. bn With the same displacement Q b Makeup water is sequentially delivered to each rinsing tank, while the acid content (S) of the circulating water in each tank is adjusted. n And ultimately, S1 reaches the set acid content S 1s .

[0016] The working principle of this invention is as follows: Latex films are cleaned through a series of rinsing tanks arranged in series. Each rinsing tank has an independent circulating water pump to maintain water flow and mixing, ensuring uniform acid distribution and efficient film transport. The films flow sequentially from the first rinsing tank through each subsequent tank until the last. Each rinsing tank has a pressure roller mechanism at its feed end, comprising a pair of adjustable-gap pressing rollers, a drive motor, and an encoder. The pressure rollers thin the films and feed them into the rinsing tank. By adjusting the gap between the rollers, the film thickness can be gradually reduced, achieving the purpose of pressing and increasing the contact area with the rinsing water, thereby improving acid removal efficiency. An acid content sensor is installed in the first rinsing tank to monitor the current acid concentration in the water in real time. This data is transmitted to a controller for processing and analysis. The system is also equipped with multiple supplementary water pumps, located above or beside the rinsing tanks. These pumps connect to the clean water overflowing from the next rinsing tank or to an external fresh water source. The supplementary water pumps use the overflow water from the next stage to replenish the tank in this stage, applying it as a spray or rinse to the film. Simultaneously, they clean the top surface of the film, solving the problem of poor acid removal of exposed parts due to the film's light weight and inability to be fully submerged during transport. Based on the detected acid content, the controller automatically adjusts the supplementary water volume to ensure the acid concentration in each rinsing tank remains at an ideal level, effectively preventing acid accumulation even under continuous operation. The controller calculates optimal operating parameters based on collected data (such as roller speed and acid content) and issues commands to each component. When the acid content in the first-stage rinsing tank deviates from the preset target, the controller increases the replenishment water volume in each rinsing tank. It may also adjust the operating speed of the pressure rollers or the operating status of the circulating pump in the upstream rinsing tank. This ensures that all components work together throughout the process, maintaining the stability of the acid content in the rinsing solution as much as possible. It also facilitates finding the optimal balance between the acid content and rinsing water consumption after film rinsing. This invention utilizes the replenishment water flow rate to dynamically regulate the acid content in the rinsing water, thereby stably controlling the acid removal effect on the film after rinsing. It achieves both stable control of the film rinsing and acid removal processing quality and efficient use of rinsing water to save water. The balance between the acid content and rinsing water consumption after film rinsing can be arbitrarily adjusted as needed.

[0017] Beneficial technical effects of the present invention:

[0018] (1) High acid removal efficiency: The counter-current cleaning method of multi-stage rinsing tanks ensures that acidic substances are gradually removed from the film from the last stage to the first stage. Through the serial washing and water replenishment mechanism, the overflow water of the last stage rinsing tank is replenished to the previous stage, forming a step-by-step water replenishment mechanism. This ensures that the acid content between each stage rinsing tank is relatively stable. Each rinsing tank is equipped with an independent circulating water pump to maintain water flow and mixing, ensuring the uniform distribution of acid in the tank and guaranteeing the acid removal efficiency of rinsing. The water replenishment can rinse the exposed top surface of the film, increasing the contact area between the film and the rinsing water, thereby improving the acid removal effect.

[0019] (2) Stable and consistent pickling effect: The acid content sensor monitors the acid concentration in each rinsing tank in real time and feeds the data back to the controller for dynamic adjustment. Based on the actual detected acid content, the controller automatically adjusts the replenishment water volume, the roller speed, or the working status of the circulating pump by comparing the collected data (such as roller speed, acid content, etc.) with the predetermined value. This ensures the coordinated operation of the entire system, ensuring that the acid content in the rinsing tank always approaches the standard value. This achieves precise control of the roller speed and acid content, ensuring the stability and consistency of the film rinsing process and realizing homogeneous production of film rinsing.

[0020] (3) High flexibility: The system can adjust operating parameters, such as the speed of the pressure roller, the drainage volume of the circulating pump, and the drainage volume of the supplementary pump, according to actual needs to adapt to the deacidification requirements of different batches of film. Through the intelligent control of the controller, the optimal balance point between the acid content and rinsing water consumption after film rinsing can be found to meet different process requirements. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the rinsing system for regulating the acid removal effect of latex coagulation film according to the present invention.

[0022] Figure 2 This is a schematic diagram of the basic structure of the rinsing tank in Example 1, taking the first-stage rinsing tank as an example;

[0023] Figure 3 This is a schematic diagram of the speed control of the pressure roller in Example 2;

[0024] Figure 4 This is a schematic diagram of the speed control of the pressing rollers in the rinsing tanks of stages 2, 3, and 4 in Example 2;

[0025] Figure 5 This is a schematic diagram of the circulating water pump drainage control in Example 2;

[0026] Figure 6 This is a schematic diagram of the acid content control in the circulating water of the first-stage rinsing tank in Example 2;

[0027] Figure 7This is a schematic diagram of another overflow water connection structure according to the present invention;

[0028] in:

[0029] Level 1 rinsing tank (1), Level 2 rinsing tank (2), Level 3 rinsing tank (3), Level 4 rinsing tank (4), inter-tank water supply connection pipe (5), controller (6), acid content sensor (7), pressure roller shaft encoder (8)

[0030] First tank (12), first spray device (13), first circulating water pipeline (15)

[0031] Second tank (22), second spray device (23), second circulating water pipeline (25);

[0032] First replenishment water pump (14), second replenishment water pump (24), third replenishment water pump (34), fourth replenishment water pump (44)

[0033] First pressure roller (11), second pressure roller (21), third pressure roller (31), fourth pressure roller (41);

[0034] First circulating water pump (16), second circulating water pump (26), third circulating water pump (36), fourth circulating water pump (46);

[0035] First roller drive motor (18), second roller drive motor (28), third roller drive motor (38), fourth roller drive motor (48);

[0036] First overflow tank (17), second overflow tank (27), third overflow tank (37), and fourth overflow tank (47). Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0038] Example 1: A rinsing system for regulating the acid removal effect of latex coagulated films consists of a primary rinsing tank 1, a secondary rinsing tank 2, a tertiary rinsing tank 3, a quaternary rinsing tank 4, an inter-tank water supply connection pipe 5, a controller 6, an acid content sensor 7, and a pressure roller shaft encoder 8. Figure 1 As shown.

[0039] The structure of the first-stage rinsing tank is as follows: Figure 2As shown, the system comprises a first pressing roller 11, a first tank 12, a first spray device 13, a first replenishing water pump 14, a first circulating water pipeline 15, a first circulating water pump 16, a first overflow trough 17, and a first roller drive motor 18. The first tank 12 is a nearly rectangular prism with an open top, placed horizontally. The first pressing roller 11 is installed above the feed end of the first tank 12, pressing the film thin and feeding it into the tank. The first spray device 13 is located in the middle to rear section above the first tank 12, spraying replenishing water into the tank to rinse the portion of the film exposed above the water surface. The first replenishing water pump 14 is connected to the first spray device 13, providing it with replenishing water. One end of the first circulating water pipeline 15 is connected to the bottom of the feed end of the tank, and the other end is connected to the bottom of the discharge end of the tank. Together with the first circulating water pump 16, it causes the rinsing water in the tank to flow from the feed end to the discharge end, with the flow rate Q. r The displacement of the circulating water pump is determined by the fact that another function of the circulating water pump is to mix the rinsing water and the makeup water evenly. The first overflow water tank 17 is located below the feed end of the first tank 12 and is directly opposite the overflow outlet of the tank. It receives the rinsing water discharged from the tank. The first roller drive motor 18 is connected to one of the roller shafts of the pressure roller through a reduction gear.

[0040] The composition, structure, and function of the second-stage rinsing tank 2, the third-stage rinsing tank 3, and the fourth-stage rinsing tank 4 are the same as those of the first-stage rinsing tank 1. The components in the second-stage rinsing tank 2 are designated as the second pressure roller 21, the second tank body 22, the second spray device 23, the second supplementary water pump 24, the second circulating water pipeline 25, the second circulating water pump 26, the second overflow water tank 27, and the second roller drive motor 28. The component designations in the third-stage rinsing tank 3 and the fourth-stage rinsing tank 4 are similar and will not be repeated.

[0041] In the system, the first-stage rinsing tank 1, the second-stage rinsing tank 2, the third-stage rinsing tank 3, and the fourth-stage rinsing tank 4 are connected end to end in sequence to form a multi-stage series pressing and rinsing channel. From the first-stage rinsing tank to the fourth-stage rinsing tank, the gap between the pressing rollers in each tank decreases sequentially to achieve the processing purpose of pressing the film thinner step by step. An encoder 8 is mounted on one of the roller shafts of the first pressing roller 11 in the first rinsing tank 1, and an acid content sensor 7 is mounted on the bottom of the feed end of the first tank body 12. The inlet of the first supplementary water pump 14 in the first rinsing tank 1 is connected to the second overflow water tank 27 of the second rinsing tank 2 through the inter-tank water supply connection pipe 5. Similarly, the inlet of the second supplementary water pump 24 in the second rinsing tank 2 is connected to the third overflow water tank 37 of the third rinsing tank 3 through the inter-tank water supply connection pipe 5. The inlet of the third supplementary water pump 34 in the third rinsing tank 3 is connected to the fourth overflow water tank 47 of the fourth rinsing tank 4 through the inter-tank water supply connection pipe 5. The inlet of the fourth supplementary water pump 44 in the fourth rinsing tank 4 is connected to an external water source. The first overflow water tank 17 is connected to the ground ditch. This forms a flow direction of external water source → fourth rinsing tank → third rinsing tank → second rinsing tank → first rinsing tank → ground ditch, which is opposite to the flow direction of the film in the rinsing tank and is called countercurrent.

[0042] Example 2: Rinsing method for regulating the acid removal effect of latex coagulated films

[0043] The makeup water for the first-stage rinsing tank is supplied by a makeup water flow rate Q. b1 and acid content S b1 The two parameters describe the circulating water flow rate Q. r1 The overflow water is described by two parameters: acid content S1 and overflow water flow rate Q. b1 The parameters are S1 and S2, representing the acid content. Similarly, the makeup water for the second-stage rinsing tank 2 is determined by the makeup water flow rate Q. b2 and acid content S b2 The two parameters describe the circulating water flow rate Q. r2 The overflow water is described by two parameters: acid content S2 and overflow water flow rate Q. b2 The parameters S2 and acid content are used to describe the makeup water for the 3-stage rinsing tank 3; the makeup water flow rate Q is used to describe the makeup water for the 3-stage rinsing tank 3. b3 and acid content S b3 The two parameters describe the circulating water flow rate Q. r3 The overflow water is described by two parameters: acid content S3 and overflow water flow rate Q. b3 The parameters S3 and S4 represent the acid content; the makeup water for the 4th stage rinsing tank 4 is determined by the makeup water flow rate Q. b4 and acid content S b4 The two parameters describe the circulating water flow rate Q. r4 The overflow water is described by two parameters: acid content S4 and overflow water flow rate Q. b4 The two parameters, S4 and acid content, are used to describe this.

[0044] The acid content signal S of the circulating water detected by the acid content sensor 7 in the first-stage rinsing tank. 1m The pressure roller speed signal n detected by the pressure roller shaft encoder 8 1m The signal is sent to controller 6; controller 6 outputs three sets of control signals: a, b, and c. Signals a1 to a4 in set a control the speeds of the first roller drive motor 18, the second roller drive motor 28, the third roller drive motor 38, and the fourth roller drive motor 48, respectively. Signals b1 to b4 in set b control the speeds of the first circulating water pump 16, the second circulating water pump 26, the third circulating water pump 36, and the fourth circulating water pump 46, respectively. Signal c controls the speeds of the first supplementary water pump 14, the second supplementary water pump 24, the third supplementary water pump 34, and the fourth supplementary water pump 44.

[0045] The speed control of the first pressing roller 11 in the first-stage rinsing tank is as follows: Figure 3 As shown. The encoder 8 on the pressure roller shaft detects the actual rotational speed n of the first pressure roller 11. 1m This value is related to the set speed value n. 1s The error signal e is given after comparison. n1 en1 After being processed by controller 6, the output signal a1 controls the rotational speed n1 of the first pressing roller 11 via the first roller drive motor 18 to reach the set rotational speed n. 1s .

[0046] The speed control of the second pressing roller 21 in the 2-stage rinsing tank, the third pressing roller 31 in the 3-stage rinsing tank, and the fourth pressing roller 41 in the 4-stage rinsing tank is as follows: Figure 4 As shown. The controller 6 processes the parameter values ​​of rotation speed n1, film thickness, level 1 compression ratio k1, level 2 compression ratio k2, and level 3 compression ratio k3, and outputs signal a2, which controls the rotation speed n2 of the second pressing roller 21 through the second roller drive motor 28; similarly, it outputs signal a3, which controls the rotation speed n3 of the third pressing roller 31 through the third roller drive motor 38, and outputs signal a4, which controls the rotation speed n4 of the fourth pressing roller 41 through the fourth roller drive motor 48.

[0047] The speed control of the first circulating water pump 16 in the first-stage rinsing tank, the second circulating water pump 26 in the second-stage rinsing tank, the third circulating water pump 36 in the third-stage rinsing tank, and the fourth circulating water pump 46 in the fourth-stage rinsing tank is as follows: Figure 5 As shown. Controller 6 outputs signal b1 based on rotational speed n1 to control the first circulating water pump 16's drainage volume Q. r1 This ensures that the flow rate of the rinsing water in the tank matches the forward movement speed of the film; similarly, the controller 6 outputs a signal b2 based on the rotational speed n2 to control the drainage volume Q of the second circulating water pump 26. r2 The third circulating water pump 36 discharges water Q based on the output signal b3 of the rotational speed n3. r3 The fourth circulating water pump 46 is controlled to discharge Q based on the output signal b4 of the rotational speed n4. r4 .

[0048] The acid content of the circulating water in the first-stage rinsing tank is controlled as follows: Figure 6 As shown. Acid content sensor 7 detected the actual acid content S in the circulating water of the first-stage rinsing tank. 1m This value is related to the set acid content value S. 1s The error signal e is given after comparison. S1 e S1 After processing by controller 6, the output signal c controls the drainage volume Q of the supplementary water pumps 14, 24, 34, and 44. b1 Q b2 Q b3 Q b4 With the same displacement Q b Makeup water is sequentially sent to the 4th, 3rd, 2nd, and 1st rinsing tanks, simultaneously altering the acid content (S1, S2, S3, and S4) of the circulating water in each tank, ultimately bringing S1 to the set acid content (S). 1s .

[0049] Film to be rinsed from Figure 1 The film enters the system from the left end, passing sequentially through the first, second, third, and fourth rinsing tanks before exiting from the right end. After four rounds of pressing and rinsing, the acid content of the film gradually decreases, and the acid content of the circulating water in the rinsing tanks also gradually decreases, resulting in S1 > S2 > S3 > S4. Makeup water enters the system from the inlet of the makeup water pump 44 in the fourth rinsing tank, passing sequentially through the fourth, third, second, and first rinsing tanks. After absorbing the coagulating acid from the film in each tank, the acid content gradually increases, resulting in S... b1 >S b2 >S b3 >S b4 From the first-stage rinsing tank to the fourth-stage rinsing tank, the acid content distribution trend of the circulating water is consistent with that of the makeup water. A significant concentration difference is maintained between the two in each tank, which is beneficial for fully utilizing the deacidifying effect of the makeup water and achieving water conservation. Changing the makeup water flow rate Q... b This can change the acid concentration difference between the makeup water and circulating water in each tank, thereby altering the deacidification effect of the film; constant makeup water flow rate Q b and S b4 This allows for stable control of the film's deacidification effect and adjustment of the replenishment water flow rate Q. b The optimal balance can be found between the acid content and rinsing water consumption after film washing.

[0050] For overflow water connections, it is also possible to supplement water across different stages. For example, the overflow tank of the 4th stage rinsing tank can be connected to the supplementary water pump of the 2nd stage rinsing tank; the overflow tank of the 3rd stage rinsing tank can be connected to the supplementary water pump of the 1st stage rinsing tank.

[0051] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A rinsing system for regulating the acid removal effect of latex coagulated films, characterized in that... include: Multi-stage rinsing tanks consist of several rinsing tanks arranged in series along the film transport path, with built-in circulating water pumps for sequential rinsing and transport of the film. Overflow tanks are arranged below the overflow drain of each rinsing tank to collect overflow water; The supplementary water pump is located outside the rinsing tank and is used to add the rinsing water overflowing from the downstream rinsing tank into the upstream rinsing tank. The serial washing and water replenishment mechanism consists of several sets, each arranged above the rinsing tank. One end is connected to the inlet of the replenishment water pump of the current stage, and the other end is connected to the overflow water tank of the next stage. It can clean the film in the rinsing tank of the current stage. The replenishment water pump of the last stage is connected to an external water source. The serial washing and water replenishment mechanism includes a spray device located in the middle and rear section above each rinsing tank, and the spray range covers the part of the film exposed above the water surface. It also includes a circulating water pipeline. The circulating water pump in the rinsing tank has one end connected to the bottom of the feed end of the rinsing tank and the other end connected to the bottom of the discharge end of the tank. Under the combined action of the circulating water pump, the rinsing water in the tank flows from the feed end to the discharge end. The pressure roller mechanism is arranged above the feed end of each rinsing tank and is used to press the film thin and feed it into the rinsing tank. The pressure roller mechanism includes a pressing roller pair and a pressure roller shaft encoder. The pressure roller shaft encoder is installed on the roller shaft of one of the pressing roller pairs and is connected to the controller. It can detect the actual rotation speed of the pressing roller pair and output the rotation speed signal to the controller. An acid content sensor is installed at the bottom of the feed end of the first-stage rinsing tank to detect the acid content of the water. The controller is connected to the acid content sensor, the pressure roller mechanism, the supplementary water pump, and the built-in circulating water pump, and can control the operating status of the pressure roller mechanism, the supplementary water pump, and the built-in circulating water pump; the controller can detect the actual values ​​of the pressure roller speed and acid content through the sensor, compare them with the preset target values, and generate an error signal; The controller can adjust the speed of the pressing roller and / or the discharge of the supplementary water pump based on the error signal, so that the actual values ​​of the pressing roller speed and acid content approach or equal the preset target values. The controller can adjust the speed of the pressing roller in this stage based on the speed parameters of the pressing roller in the previous rinsing tank and the specific compression ratio parameters of the film thickness in this stage, and adjust the speed of the pressing roller in the next stage based on the speed parameters of the pressing roller in this rinsing tank and the specific compression ratio parameters of the film thickness in the next stage.

2. The rinsing system for regulating the acid removal effect of latex coagulated films according to claim 1, characterized in that, The pressure roller mechanism includes a roller drive motor; the roller drive motor is connected to the active roller shaft in the pressure roller pair through a reduction gear.

3. A rinsing method based on the rinsing system of claim 1 or 2, characterized in that... include: The film is arranged in strips and passes through a series of multi-stage rinsing tanks from the first stage to the last stage. The water replenishment of the last stage of the multi-stage rinsing tank is connected to an external water source. The overflow water of the first stage is discharged and treated uniformly, forming a step-by-step rinsing connection in which the overflow water of each rinsing tank replenishes the water of the next stage to the previous stage. Each rinsing tank is equipped with a rubber pressing roller at the feed end to convey the rubber sheet and press the rubber sheet thinner step by step; As the film passes through each rinsing tank, it is rinsed or sprayed by overflow water from the next stage until the final stage is rinsed or sprayed by an external water source. The acid content of the rinsing water in the first rinsing tank is monitored in real time. The rotation speed of the pressing rollers in each rinsing tank is adjustable and controllable, as is the drainage volume of the circulating water pump in each rinsing tank. The drainage volume of the water pump that replenishes the overflow water of the next rinsing tank after each rinsing tank is adjustable and controllable. By adjusting the rotation speed of the pressing rollers, the drainage volume of the circulating water pump, and the drainage volume of the water pump, the acid content of the rinsing water in each rinsing tank can be adjusted.

4. The rinsing method according to claim 3, characterized in that, The adjustment steps for the pressure roller include: The actual rotational speed n of the rubber pressing rollers is detected by the encoder on the roller shaft. 1m , and the set speed value n 1s The error signal e is given after comparison. n1 Based on e n1 Output control signal a1, which controls the rotational speed n1 of the pressing roller via the roller drive motor to reach the set rotational speed n. 1s ; Based on the rotational speed n1 of the pressing rollers, the film thickness, and the compression ratio k n The parameter value gives the signal a n+1 The rotational speed n of the pressing roller is controlled by the roller drive motor. n+1 .

5. The rinsing method according to claim 4, characterized in that, The steps for regulating a circulating water pump include: According to the rotational speed n of the pressure rollers n Output signal b n Control the drainage volume Q of the circulating water pump rn This ensures that the flow rate of the rinsing water in the rinsing tank matches the forward movement speed of the film; similarly, Based on rotational speed n n+1 Output signal b n+1 Control the drainage volume Q of the circulating water pump rn+1 .

6. The rinsing method according to claim 4 or 5, characterized in that, The acid content control steps include: the acid content sensor detects the actual acid content S in the circulating water of the first-stage rinsing tank. 1m This value is related to the set acid content value S. 1s The error signal e is given after comparison. S1 Based on e S1 Output signal c controls the drainage volume Q of each make-up water pump. bn With the same displacement Q b Makeup water is sequentially delivered to each rinsing tank, while the acid content S of the circulating water in each tank is adjusted. n And ultimately, S1 reaches the set acid content S 1s .

7. The rinsing method according to claim 4 or 5, characterized in that, Changing the flow rate of the makeup water can alter the acid concentration difference between the makeup water and the circulating water in each tank, thereby changing the deacidification effect of the film.

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