CN114354965A - Automatic sampling detection system and method for tanning bath liquid - Google Patents

Automatic sampling detection system and method for tanning bath liquid Download PDF

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Publication number
CN114354965A
CN114354965A CN202210009735.5A CN202210009735A CN114354965A CN 114354965 A CN114354965 A CN 114354965A CN 202210009735 A CN202210009735 A CN 202210009735A CN 114354965 A CN114354965 A CN 114354965A
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China
Prior art keywords
sampling
rotary drum
tanning bath
tanning
bath liquid
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CN202210009735.5A
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Chinese (zh)
Inventor
林炜
张龙
周建飞
王春华
唐猷成
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Sichuan University
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Sichuan University
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Priority to CN202210009735.5A priority Critical patent/CN114354965A/en
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Abstract

The invention discloses an automatic sampling detection system and method for tanning bath liquid, which comprises a rotary drum for leather processing, a sampling device and an analysis detection device, wherein the sampling device comprises a sampling pipeline and a backflow pipeline, the sampling pipeline is communicated with the rotary drum and is used for extracting the tanning bath liquid in the rotary drum, and the backflow pipeline is communicated with the rotary drum and is used for returning the tanning bath liquid to the rotary drum; the analysis and detection device is coupled between the sampling pipeline and the return pipeline and is used for extracting the tanning bath solution for online detection. The invention can carry out online sampling detection on the tanning bath liquid in the rotary drum under the condition of not shutting down the rotary drum.

Description

Automatic sampling detection system and method for tanning bath liquid
Technical Field
The invention relates to the technical field of tanning, in particular to an automatic sampling detection system and method for tanning bath liquid.
Background
Tanning refers to the process of tanning hides into leather. Removing hair and non-collagen fibers, loosening, fixing and strengthening collagen fibers in dermis, and performing a series of chemical (including biochemical) and mechanical treatments such as finishing. The leather-making process is generally divided into four stages of preparation, tanning, wet dyeing and finishing and dry finishing. The most used equipment in the leather making process is a rotary drum, the procedures of soaking, liming, unhairing, softening, pickling, tanning, dyeing, greasing and the like are all finished in the rotary drum, and the uniform penetration of various chemical materials is promoted through the mechanical action of the rotary drum to finish the chemical action of the preparation on leather.
In the current leather processing process, the absolute processing time of the leather in the rotary drum accounts for more than 80 percent of the whole leather-making mechanical processing. However, the processes of feeding, sampling and the like of the conventional leather-making rotary drum are mostly manually controlled, and the automation degree is not high; at present, the operation of the rotary drum is required to be suspended in the sampling detection process, the drum door is opened, and manual sampling is carried out, so that the detection efficiency is low, and the normal processing procedure is delayed. Therefore, there is a need for an automatic sampling and detecting system and method for tanning bath solution that can solve the above problems.
Disclosure of Invention
The application aims to provide an automatic sampling detection system and method for tanning bath liquid, which can perform online sampling detection on the tanning bath liquid in a rotary drum under the condition that the rotary drum is not shut down.
The scheme adopted by the application to solve the technical problems is as follows:
in a first aspect, the application provides an automatic sampling and detecting system for tanning bath liquid, which comprises a rotary drum for leather processing, and further comprises a sampling device and an analysis and detection device, wherein the sampling device comprises a sampling pipeline and a return pipeline, the sampling pipeline is communicated with the rotary drum and is used for extracting the tanning bath liquid in the rotary drum, and the return pipeline is communicated with the rotary drum and is used for returning the tanning bath liquid to the rotary drum; the analysis and detection device is coupled between the sampling pipeline and the return pipeline and is used for extracting the tanning bath solution for online detection. The online sampling detection can be carried out on the tanning bath liquid in the rotary drum under the condition that the rotary drum is not shut down.
In some embodiments of this application, still include controlling means, controlling means is used for automated control analysis and detection device and sampling device work have realized full-automatic sampling test, reduce the human consumption. The control device is controlled by automatic control software such as a PLC or a DCS and the like, so that automatic sampling without suspending the rotary drum and without manual participation is realized.
In some embodiments of the present application, the apparatus further includes a dilution device, the dilution device is disposed at a connection point of the sampling pipeline and the analysis and detection device, and is configured to input a dilution liquid to dilute the tanning bath, and the control device is further configured to control the dilution device.
In some embodiments of this application, the diluent includes water, the diluting device includes water inlet, metering device and delivery port, the delivery port is connected the sample pipeline with the tie point of analysis and detection device, metering device is used for detecting the inflow. At present, because the concentration of tanning bath liquid is high, the result can be obtained only in 40 minutes by the traditional fastest method; even if the COD value of the tanning bath liquid is up to 20000mg/L, the tanning bath liquid can be automatically diluted and then the result can be obtained within 2 minutes.
In some embodiments of the present application, a sampling pump is disposed on the sampling pipeline, the sampling pump is used for extracting tanning bath in the rotary drum, and the control device is further used for controlling the operation of the sampling pump.
In some embodiments of the present application, the sampling pipeline is further provided with a temperature detector for detecting the temperature of the tanning bath and a pH detector for detecting the pH of the tanning bath.
In some embodiments of the present application, the analysis and detection device comprises a COD detection device for performing water quality detection on the tanning bath.
In some embodiments of the present application, the sampling device is disposed on a side surface of the drum, the sampling device is configured to sample the tanning liquid in the drum in real time, and the control device is further configured to remotely control the analysis and detection device, and perform process control on the drum through the acquired sampling information.
In some embodiments of the present application, a first pipeline and a second pipeline are arranged in parallel between the sampling pipeline and the sampling pipeline, and the analysis and detection device is arranged on the first pipeline.
In a second aspect, the present application further provides an automatic sampling and detecting method for tanning bath, which is applied to the above detecting system, and includes the following steps:
s1: opening a sampling pump to extract the tanning bath liquid in the rotary drum;
s2: the tanning bath liquid circulates along the sampling pipeline, the return pipeline and the rotary drum;
s3: opening the diluting device, and diluting part of the tanning bath liquid;
s4: opening an analysis detection device, and carrying out water quality detection on the diluted tanning bath solution;
s5: and adjusting the rotation time, frequency and speed of the rotary drum according to the detection result.
The system comprises a rotary drum for leather processing, a sampling device and an analysis and detection device, wherein the sampling device comprises a sampling pipeline and a backflow pipeline, the sampling pipeline is communicated with the rotary drum and used for extracting the tanning bath liquid in the rotary drum, and the backflow pipeline is communicated with the rotary drum and used for returning the tanning bath liquid to the rotary drum; the analysis and detection device is coupled between the sampling pipeline and the return pipeline and is used for extracting the tanning bath solution for online detection. The invention can carry out online sampling detection on the tanning bath liquid in the rotary drum under the condition of not shutting down the rotary drum.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a detailed block diagram of the system of the present invention.
FIG. 3 is a flow chart of the method steps of the present invention.
Description of the element symbols:
1-a rotary drum, 2-a sampling device, 3-an analysis and detection device and 4-a dilution device.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or including indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as exemplary is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.
Example 1: referring to fig. 1 and fig. 2, the main body of the present embodiment is an automatic sampling and detecting system for tanning bath, and is characterized by comprising a rotating drum 1 for tanning, a sampling device 2 and an analysis and detection device 3, wherein the sampling device 2 comprises a sampling pipeline and a return pipeline, the sampling pipeline is communicated with the rotating drum 1 and is used for extracting the tanning bath from the rotating drum 1, and the return pipeline is communicated with the rotating drum 1 and is used for returning the tanning bath to the rotating drum 1; the analysis and detection device 3 is coupled between the sampling pipeline and the return pipeline, and the analysis and detection device 3 is used for extracting the tanning bath solution for online detection. The drum 1 can be subjected to online sampling detection without shutting down the drum 1. After automatic sampling, online automatic detection equipment such as PH, temperature, COD and the like is additionally arranged, the obtained tanning bath liquid can be automatically analyzed and detected, and the detection result can be returned through automatic control software such as PLC or DCS and the like to adjust the tanning process in real time.
In some embodiments of the present application, the system further comprises a control device, and the control device is used for automatically controlling the operation of the analysis detection device 3 and the sampling device 2. Realize full-automatic sampling test, reduce the manpower consumption. The control device is controlled by automatic control software such as a PLC or a DCS and the like, so that the automatic sampling without suspending the rotary drum 1 and without manual participation is realized.
In some embodiments of the present application, the apparatus further comprises a dilution device 4, the dilution device 4 is disposed at a connection point of the sampling pipeline and the analysis and detection device 3, and is configured to input a dilution liquid to dilute the tanning bath, and the control device is further configured to control the dilution device 4.
In some embodiments of the present application, the diluent includes water, the dilution device 4 includes a water inlet, a metering device and a water outlet, the water outlet is connected to the connection point of the sampling pipeline and the analysis and detection device 3, and the metering device is used for detecting the water inflow. At present, because the concentration of tanning bath liquid is high, the result can be obtained only in 40 minutes by the traditional fastest method; even if the COD value of the tanning bath liquid is up to 20000mg/L, the tanning bath liquid can be automatically diluted and then the result can be obtained within 2 minutes. The metering device may be a rotameter.
In some embodiments of the present application, a sampling pump is disposed on the sampling pipeline, the sampling pump is used for pumping the tanning bath in the rotary drum 1, and the control device is further used for controlling the operation of the sampling pump.
In some embodiments of the present application, a temperature detector and a PH detector are further disposed on the sampling pipe, the temperature detector is configured to detect the temperature of the tanning bath, and the PH detector is configured to detect the PH of the tanning bath. Different detectors can be added according to actual indexes.
In some embodiments of the present application, the analysis and detection device 3 includes a COD detection device for performing water quality detection on the tanning bath. But not limited to COD, and also can be a detection device with the relevant indexes of the tanning bath liquid such as BOD, turbidity, suspended matters and the like exceeding the upper detection limit of an on-line detection instrument.
In some embodiments of the present application, the sampling device 2 is disposed on a side surface of the rotary drum 1, the sampling device 2 is configured to sample the tanning liquid in the rotary drum 1 in real time, and the control device is further configured to remotely control the analysis and detection device 3, and perform process control on the rotary drum 1 through the obtained sampling information. The analysis and detection device 3 can be arranged on the front side surface or the rear side surface of the rotary drum 1, samples and analyzes the tanning liquid in the rotary drum 1 in real time under the condition that the rotary drum 1 can not be stopped, and automatically adjusts the rotating speed and time of the rotary drum 1 in real time according to the analysis result.
In some embodiments of the present application, a first pipeline and a second pipeline are arranged in parallel between the sampling pipeline and the sampling pipeline, and the analysis and detection device 3 is arranged on the first pipeline. The second pipeline can be closed when the detection is needed, so that the diluted tanning bath liquid is prevented from flowing into the rotary drum 1; the first pipeline is normally open.
In embodiment 2, referring to fig. 3, the present embodiment further provides an automatic sampling and detecting method for tanning bath, which is applied to the above detecting system, and includes the following steps:
s1: opening a sampling pump to extract the tanning bath liquid in the rotary drum 1;
s2: the tanning bath liquid circulates along the sampling pipeline, the return pipeline and the rotary drum 1;
s3: opening the diluting device 4 and diluting part of the tanning bath liquid;
s4: opening the analysis and detection device 3, and carrying out water quality detection on the diluted tanning bath liquid;
s5: and adjusting the rotation time, frequency and speed of the rotary drum 1 according to the detection result. The detection results are all the detection results of the tanning bath liquid in the whole process, and the rotation time, the frequency and the speed of the rotary drum 1 are adjusted after comprehensive judgment.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.
Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be considered merely illustrative and not restrictive of the broad application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.
Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.
Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.
For each patent, patent application publication, and other material cited in this application, such as articles, books, specifications, publications, documents, and the like, the entire contents of which are hereby incorporated by reference into this application, except for application history documents that are inconsistent with or conflict with the contents of this application, and except for documents that are currently or later become incorporated into this application as though fully set forth in the claims below. It is noted that the descriptions, definitions and/or use of terms in this application shall control if they are inconsistent or contrary to the present disclosure.
The automatic sampling and detecting system and method for tanning bath provided by the embodiment of the application are described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. An automatic sampling and detecting system for tanning bath liquid is characterized by comprising a rotary drum (1) for leather processing, a sampling device (2) and an analysis and detection device (3), wherein the sampling device (2) comprises a sampling pipeline and a return pipeline, the sampling pipeline is communicated with the rotary drum (1) and used for extracting the tanning bath liquid in the rotary drum (1), and the return pipeline is communicated with the rotary drum (1) and used for returning the tanning bath liquid to the rotary drum (1); the analysis and detection device (3) is coupled between the sampling pipeline and the return pipeline, and the analysis and detection device (3) is used for extracting the tanning bath liquid for online detection.
2. The automatic sampling and detection system for tanning baths according to claim 1, further comprising a control device for automatically controlling the operation of said analysis and detection device (3) and sampling device (2).
3. The automatic sampling and detecting system for tanning bath according to claim 2, further comprising a dilution device (4), wherein said dilution device (4) is disposed at a connection point of said sampling pipe and said analysis and detection device (3) and is used for inputting a dilution liquid to dilute the tanning bath, and said control device is further used for controlling said dilution device (4).
4. An automatic sampling and testing system for tanning baths as claimed in claim 3, characterized in that said dilution liquid comprises water, said dilution means (4) comprises a water inlet, a metering means and a water outlet, said water outlet is connected to the connection point of said sampling pipe with said analytical testing means (3), said metering means is used to detect the water inflow.
5. The automatic sampling and detecting system for tanning bath as claimed in claim 2, wherein a sampling pump is arranged on the sampling pipeline, the sampling pump is used for pumping the tanning bath in the rotary drum (1), and the control device is also used for controlling the operation of the sampling pump.
6. The automatic sampling and detecting system for tanning bath liquid as claimed in claim 5, wherein a temperature detector for detecting the temperature of tanning bath liquid and a pH detector for detecting the pH of tanning bath liquid are further disposed on the sampling pipeline.
7. The automatic sampling and detection system for tanning bath liquid as claimed in claim 1, wherein said analytical detection device (3) comprises a COD detection device for water quality detection of tanning bath liquid.
8. The automatic sampling and detecting system for tanning baths according to claim 2, characterized in that the sampling device (2) is arranged on the side of the rotary drum (1), the sampling device (2) is used for sampling tanning liquid in the rotary drum (1) in real time, the control device is further used for remotely controlling the analysis and detection device (3) and carrying out process control on the rotary drum (1) through the obtained sampling information.
9. The automatic sampling and testing system for tanning baths according to claim 2, characterized in that a first pipe and a second pipe are arranged in parallel between the sampling pipe and the sampling pipe, and the analysis and testing device (3) is arranged on the first pipe.
10. An automatic sampling detection method for tanning bath liquid, which is applied to the detection system of any one of claims 1-9, and comprises the following steps:
s1: a sampling pump is started to extract the tanning bath liquid in the rotary drum (1);
s2: the tanning bath liquid circulates along the sampling pipeline, the return pipeline and the rotary drum (1);
s3: opening the diluting device (4) and diluting part of the tanning bath liquid;
s4: opening an analysis detection device (3) to detect the water quality of the diluted tanning bath liquid;
s5: and adjusting the rotation time, frequency and speed of the rotary drum (1) according to the detection result.
CN202210009735.5A 2022-01-05 2022-01-05 Automatic sampling detection system and method for tanning bath liquid Pending CN114354965A (en)

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