Starch workshop surface glue spraying starch pH online detection device

Abstract

A starch workshop surface glue spraying starch pH online detection device comprises a mounting pipeline communicated with a starch pipeline, the mounting pipeline is obliquely arranged, one end, far away from the starch pipeline, of the mounting pipeline is connected with a sealing pipeline, a pH detector used for detecting liquid in the starch pipeline is arranged in the sealing pipeline, and the pH detector is connected with the mounting pipeline. A sealing ring is also arranged between the sealing pipeline and the shell of the pH detector so as to realize the sealing function of the sealing pipeline. According to the utility model, the pH value of a solution in the starch pipeline can be detected online in real time, an operator can immediately know whether the pH value in the starch pipeline meets the requirement or not, and once the pH value does not meet the requirement, the DCS control system can control the caustic soda pump to add caustic soda so as to ensure the stability of the pH value. The device is convenient to mount and dismount, can ensure the accuracy and reliability of starch quality, and has very high application and popularization values.

Description

Technical Field

[0001] The utility model relates to a pH detection device, in particular to an online pH detection device for starch spraying with surface glue in a starch workshop. Background Art

[0002] To improve the surface strength of paper and paperboard and prevent the diffusion and penetration of aqueous liquids, sizing is necessary. There are two methods of sizing: internal sizing, where a treated sizing agent is added to the slurry; and surface sizing, where a sizing agent is applied to the surface of the paper or paperboard. Compared to traditional internal sizing, surface sizing significantly reduces costs and enhances the printability of paper, and is therefore gaining increasing attention from papermakers.

[0003] Both neutral and acid sizing methods have strict requirements for the pH of the surface starch. Traditionally, workers have relied on regularly sampling starch from starch storage tanks to test its pH, and then manually adding caustic soda based on the test results to control the pH of the sprayed starch. This method has a low degree of automation for testing and controlling the pH of the sprayed starch. Sprayed starch cannot automatically control the pH, and manual sampling and testing are required every hour. The addition of caustic soda based on the test results makes it impossible to ensure pH stability, increasing employee labor utilization and affecting the quality of the starch product. This is a shortcoming of the existing technology. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes an online detection device for starch pH of starch spraying in a starch workshop.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an online detection device for starch pH of surface glue spraying in a starch workshop, comprising an installation pipe connected to a starch pipeline, the installation pipe being arranged at an angle, a sealing pipe being connected to the end of the installation pipe away from the starch pipeline, a pH detector for detecting the liquid in the starch pipeline being arranged in the sealing pipe, and a sealing ring being further arranged between the sealing pipe and the housing of the pH detector to realize the sealing function of the sealing pipe.

[0006] A further improvement of the present invention is that a mounting opening is provided on the starch pipeline, the mounting pipeline is arranged at the mounting opening, and the mounting pipeline is fixed to the starch pipeline by welding.

[0007] A further improvement of the present invention is that an internal thread is provided at one end of the installation pipe away from the starch pipe, and an external thread matching the internal thread is provided at one end of the sealing pipe.

[0008] A further improvement of the present invention is that a flange is provided at the other end of the sealing pipe.

[0009] A further improvement of the present invention is that the sealing ring comprises a body, an annular mounting portion is provided on one end of the body away from the starch pipe, and the annular mounting portion is fixedly connected to the flange.

[0010] A further improvement of the present invention is that the flange is provided with a first bolt hole, the annular mounting portion is provided with a second bolt hole, and the first bolt hole and the second bolt hole are connected by a fixing bolt.

[0011] A further improvement of the present invention is that the main body and the annular mounting portion are an integrally manufactured structure.

[0012] A further improvement of the present invention is that the pH detector is electrically connected to the input end of the DCS control system, and the output end of the DCS control system is electrically connected to the caustic soda pump.

[0013] The beneficial effects of this utility model include: It enables real-time online testing of the pH value of the solution in the starch pipeline, allowing operators to immediately determine whether the pH value in the starch pipeline meets the required standards. If it does not, the DCS control system controls the caustic soda pump to add caustic soda to ensure pH stability. This device is not only easy to install and disassemble, but also ensures the accuracy and reliability of starch quality, avoiding the technical problems of manual sampling and testing, which often result in high repetitive labor and inaccurate test results, and has great application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a specific embodiment of the utility model;

[0015] Figure 2 for Figure 1 A magnified view of the structure at point A.

[0016] In the figure, 1 is a starch pipe, 11 is a mounting port, 2 is a mounting pipe, 3 is a sealing pipe, 31 is a flange, 4 is a pH detector, 41 is a probe, 42 is a housing, 5 is a sealing ring, 51 is a body, 52 is a ring-shaped mounting portion, and 6 is a fixing bolt. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The present invention is further described in conjunction with the drawings and embodiments:

[0018] like Figure 1-2 As shown, an online detection device for starch pH by surface glue spraying in a starch workshop comprises a mounting pipe 2 connected to a starch pipe 1, wherein the mounting pipe 2 is arranged at an angle, and a sealing pipe 3 is connected to the end of the mounting pipe 2 away from the starch pipe 1, wherein a pH detector 4 for detecting the liquid in the starch pipe 1 is arranged in the sealing pipe 3, and the pH detector 4 can be used to detect the pH of the liquid in the starch pipe 1 in real time.

[0019] In order to ensure the accuracy of detection and prevent slurry leakage, the utility model further provides a sealing ring 5 between the sealing pipe 3 and the housing 42 of the pH detector 4. The sealing ring 5 can effectively realize the sealing function of the sealing pipe 3 to prevent slurry leakage.

[0020] Insert the pH detector 4 into the sealed pipe 3 so that the outer shell 42 contacts the sealing ring 5, and the probe 41 is located in the starch pipe 1. Power is supplied to the pH detector 4. When the starch solution in the starch pipe 1 flows through the starch pipe 1, the display screen of the pH detector 4 displays the pH value in the starch pipe 1. The operator can immediately know whether the pH value in the starch pipe 1 meets the requirements. During the detection process, the pH detector 4 can be pulled and pulled so that the probe 41 is located at different positions in the starch pipe 1, and the average value of multiple detection results is taken to improve the detection accuracy. The utility model realizes real-time online detection of the pH of the solution in the starch pipe 1, avoiding the technical problems of low efficiency and inaccurate detection results caused by manual sampling detection in the prior art.

[0021] In order to achieve the communication between the starch pipeline 1 and the installation pipeline 2, the utility model provides an installation port 11 on the starch pipeline 1, the installation pipeline 2 is arranged at the installation port 11, and the installation pipeline 2 and the starch pipeline 1 are fixed by welding.

[0022] In order to achieve the connection between the installation pipe 2 and the sealing pipe 3, the utility model is provided with an internal thread at the end of the installation pipe 2 away from the starch pipe 1, and an external thread that matches the internal thread is provided at one end of the sealing pipe 3. The installation pipe 2 and the sealing pipe 3 are connected by a thread, which can easily install and remove the sealing pipe 3, facilitating subsequent maintenance and replacement. If the pH detector 4 or the sealing ring 5 malfunctions, the entire sealing pipe 3 can be disassembled after shutdown, and then the pH detector 4 or the sealing ring 5 that needs to be repaired can be replaced. After the replacement is completed, the sealing pipe 3 and the installation pipe 2 can be connected by a thread.

[0023] Furthermore, a flange 31 is provided at the other end of the sealing pipe 3 , which not only enhances the connection strength of the entire device but also provides conditions for the subsequent installation of the sealing ring 5 .

[0024] Furthermore, the sealing ring 5 includes a body 51, and an annular mounting portion 52 is provided on one end of the body 51 away from the starch pipe 1. The annular mounting portion 52 is fixedly connected to the flange 31. To ensure a firm connection between the flange 31 and the annular mounting portion 52, the flange 31 is provided with a first bolt hole, and the annular mounting portion 52 is provided with a second bolt hole. The first bolt hole and the second bolt hole are connected by a fixing bolt 6.

[0025] In order to simplify the production process and improve the overall performance of the product, the main body 51 and the annular mounting portion 52 are integrally formed, which not only improves the overall strength of the sealing ring 5 but also makes it more stable and reliable during installation and use.

[0026] Example 2: To automatically control the pH within starch pipeline 1, a caustic soda pump can also be incorporated into the device. Specifically, the pH detector 4 is electrically connected to the input of the DCS control system, and the output of the DCS control system is electrically connected to the caustic soda pump. The pH detector 4 uploads the starch pH value to the DCS automatic control system in real time. If the system detects that the pH value does not match the set value, the DCS automatic control system automatically starts the caustic soda pump and adds caustic soda to the starch pipeline 1, maintaining a stable starch pH value. This reduces labor, improves work efficiency, and stabilizes product quality.

[0027] The electrical components such as the pH detector and the DCS automatic control system used in the present invention are all existing technologies, and the connection relationship between the electrical components adopts conventional electrical connection, which will not be described in detail here.

[0028] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A starch workshop surface glue spraying starch pH online detection device, characterized in that, It includes an installation pipe connected to the starch pipe, the installation pipe is arranged at an angle, and a sealing pipe is connected to the end of the installation pipe away from the starch pipe. A pH detector for detecting the liquid in the starch pipe is arranged in the sealing pipe, and a sealing ring is also arranged between the sealing pipe and the housing of the pH detector to realize the sealing function of the sealing pipe.

2. The starch workshop surface glue spraying starch pH online detection device according to claim 1, characterized in that, The starch pipeline is provided with a mounting opening, the mounting pipeline is arranged at the mounting opening, and the mounting pipeline is fixed to the starch pipeline by welding.

3. The starch pH online detection device for starch workshop surface glue spraying according to claim 1 or 2, characterized in that, An end of the installation pipe away from the starch pipe is provided with an internal thread, and one end of the sealing pipe is provided with an external thread matching the internal thread.

4. The starch workshop surface glue spraying starch pH online detection device according to claim 3, characterized in that, The other end of the sealing pipe is provided with a flange.

5. The starch workshop surface glue spraying starch pH online detection device according to claim 4, characterized in that, The sealing ring comprises a body, and an annular mounting portion is provided on one end of the body away from the starch pipeline, and the annular mounting portion is fixedly connected to the flange.

6. The starch pH online detection device for starch spraying in a starch workshop according to claim 5, characterized in that: The flange is provided with a first bolt hole, and the annular mounting portion is provided with a second bolt hole, and the first bolt hole and the second bolt hole are connected by a fixing bolt.

7. The starch workshop surface glue spraying starch pH online detection device according to claim 5, characterized in that, The main body and the annular mounting portion are an integrally formed structure.

8. The starch pH online detection device for starch spraying in a starch workshop according to claim 1, characterized in that: The pH detector is electrically connected to the input end of the DCS control system, and the output end of the DCS control system is electrically connected to the caustic soda pump.

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