A temperature and pressure control device for preheating in corrugated cardboard box production.

Abstract

This utility model discloses a temperature and pressure control device for preheating in corrugated carton production, relating to the field of corrugating machines. The utility model includes a base plate, a housing mounted on top of the base plate, a single-face corrugating machine body mounted on one side of the housing on top of the base plate, a preheating component mounted on one side of the single-face corrugating machine body on top of the base plate, and temperature and pressure control components installed in both the preheating component and the single-face corrugating machine body. A PLC controller and a PID controller are mounted on the front of the housing. This utility model utilizes the waste heat from the return steam of the upper and lower corrugating rollers to provide secondary steam for the first and second preheating cylinders, reducing steam consumption. The temperature sensor feeds back the temperature to the PLC controller, which then automatically adjusts the opening of the proportional valve via the PID controller.

Description

Technical Field

[0001] This utility model relates to the field of corrugated machine technology, and more specifically, to a temperature and pressure control device for preheating in corrugated carton production. Background Technology

[0002] The production process of corrugated cardboard generally uses roll paper as the paper material and goes through corrugation, gluing, bonding, pressing, drying and other processes in a continuous production. During the production of corrugated paper, the corrugated paper machine needs to heat the corrugated paper.

[0003] The existing corrugating machines and preheating cylinders use steam from the main pipeline. When the steam pressure is high, the temperature is high. Excessive temperature can cause the cardboard to dry and crack. Furthermore, it is impossible to control the steam temperature in the preheating cylinder to avoid wasting steam.

[0004] Therefore, we have made improvements to this by proposing a temperature and pressure control device for preheating in corrugated box production. Utility Model Content

[0005] The purpose of this invention is to address the issue that in existing corrugating machines and preheating cylinders, the steam in the main pipeline is used for steam. When the steam pressure is high, the temperature is also high, which can cause the cardboard to dry and crack. Furthermore, it is impossible to control the steam temperature in the preheating cylinder to avoid wasting steam.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A temperature and pressure control device for preheating in corrugated cardboard box production is provided to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] The device includes a base plate, a housing mounted on top of the base plate, a single-sided corrugating machine body mounted on one side of the housing on top of the base plate, a preheating component mounted on one side of the single-sided corrugating machine body on top of the base plate, temperature and pressure control components mounted in both the preheating component and the single-sided corrugating machine body, a PLC controller and a PID controller mounted on the front of the housing, and a steam conveying component mounted on top of the base plate.

[0010] By installing proportional valves, temperature sensors, and pressure sensors on the single-face corrugating machine body and preheating components, and centrally controlling them through a PLC controller, the waste heat from the return steam of the upper and lower corrugating rollers is utilized to provide secondary steam for the first and second preheating cylinders, reducing steam consumption. The temperature sensor feeds back the temperature to the PLC controller, and the PID controller automatically adjusts the opening of the proportional valve to achieve a constant temperature state for the corrugating rollers and preheating cylinders, further reducing steam waste.

[0011] As a preferred embodiment of the temperature and pressure control device for preheating corrugated carton production provided by this utility model, the single-face corrugating machine body is equipped with a pressure roller, an upper corrugating roller and a lower corrugating roller.

[0012] As a preferred embodiment of the temperature and pressure control device for preheating corrugated cardboard box production provided by this utility model, the preheating component includes a first preheating cylinder and a second preheating cylinder installed above the base plate, and a liquid level tank is installed above the first preheating cylinder and the second preheating cylinder.

[0013] As a preferred embodiment of the temperature and pressure control device for preheating corrugated carton production provided by this utility model, the temperature and pressure control device includes a temperature sensor and a pressure sensor installed in the pressure roller, the upper corrugating roller, the lower corrugating roller, the first preheating cylinder and the second preheating cylinder. Proportional valves are installed on the outside of the first preheating cylinder, the second preheating cylinder and the single-face corrugating machine body.

[0014] As a preferred embodiment of the temperature and pressure control device for preheating corrugated cardboard box production provided by this utility model, the steam conveying assembly includes a steam inlet pipe installed on one side of the box body, a steam waste heat pipe installed on one side of the single-face corrugating machine body, a multi-port connecting pipe installed at one end of the steam inlet pipe, and one end of the steam waste heat pipe installed on one side of the liquid level tank and connected thereto.

[0015] In a preferred embodiment of the temperature and pressure control device for preheating corrugated cardboard box production provided by this utility model, a first steam valve is installed at one of the connection ports of the steam inlet pipe and the multi-way connecting pipe, a second steam valve is installed at the bottom of the liquid level tank and one of the connection ports of the multi-way connecting pipe, and the other two connection ports of the multi-way connecting pipe are respectively connected to two proportional valves above the first preheating cylinder and the second preheating cylinder.

[0016] In a preferred embodiment of the temperature and pressure control device for preheating corrugated cardboard box production provided by this utility model, an air vent valve is installed on the outside of the first preheating cylinder, the second preheating cylinder, and the liquid level tank, and a steam return water pipe is installed at the connection port of the plurality of air vent valves.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: By installing a proportional valve, temperature sensor, and pressure sensor on the single-face corrugating machine body and preheating components, and centrally controlling them through a PLC controller, the waste heat of the return water steam from the upper and lower corrugating rollers is utilized to provide secondary steam for the first and second preheating cylinders, reducing steam consumption. The temperature sensor feeds back the temperature to the PLC controller, and the PID controller automatically adjusts the opening of the proportional valve to achieve a constant temperature state for the corrugating rollers and preheating cylinders, further reducing steam waste. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall process of the temperature and pressure control device for preheating corrugated cardboard box production provided in this application;

[0019] Figure 2 A schematic side sectional view of the overall structure of the temperature and pressure control device for preheating corrugated cardboard box production provided in this application;

[0020] Figure 3 A schematic diagram of the front part of the process of the temperature and pressure control device for preheating the corrugated carton production provided in this application;

[0021] Figure 4 A schematic diagram of the process following the temperature and pressure control device for preheating corrugated box production provided in this application.

[0022] The image shows:

[0023] 1. Base plate; 2. Housing; 3. Single-sided corrugating machine body; 301. Pressure roller; 302. Upper corrugating roller; 303. Lower corrugating roller; 4. Preheating assembly; 401. First preheating cylinder; 402. Second preheating cylinder; 403. Liquid level tank; 5. PLC controller; 6. PID controller; 7. Steam conveying assembly; 701. Steam inlet pipe; 702. Steam waste heat pipe; 703. Multi-way connecting pipe; 9. Proportional valve; 10. First steam valve; 11. Second steam valve; 12. Exhaust valve; 13. Steam return water pipe; 14. Temperature sensor; 15. Pressure sensor. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] Please refer to Figure 1-4 A temperature and pressure control device for preheating in corrugated carton production includes: a base plate 1; a housing 2 mounted on top of the base plate 1; a single-face corrugating machine body 3 mounted on one side of the housing 2 above the base plate 1; a preheating assembly 4 mounted on one side of the single-face corrugating machine body 3 above the base plate 1; temperature and pressure control components installed inside both the preheating assembly 4 and the single-face corrugating machine body 3; a PLC controller 5 and a PID controller 6 mounted on the front of the housing 2; and a steam conveying assembly 7 above the base plate 1. A pressure roller 301, an upper corrugating roller 302, and a lower corrugating roller 303 are installed inside the single-face corrugating machine body 3. The preheating assembly 4 includes a first preheating cylinder 401 and a second preheating cylinder 402 mounted above the base plate 1; and a liquid level tank 403 mounted above the first preheating cylinder 401 and the second preheating cylinder 402. The temperature and pressure control components include a temperature sensor 14 and a pressure sensor 15 installed in the pressure roller 301, the upper corrugated roller 302, the lower corrugated roller 303, the first preheating cylinder 401, and the second preheating cylinder 402.

[0033] Implementation process: By installing a proportional valve 9, a temperature sensor 14, and a pressure sensor 15 on the single-sided corrugating machine body 3 and the preheating assembly 4, and centrally controlling them through a PLC controller 5, the waste heat of the return water steam from the upper corrugating roller 302 and the lower corrugating roller 303 is used to provide secondary steam for the first preheating cylinder 401 and the second preheating cylinder 402, thereby reducing steam consumption.

[0034] Benefits of implementation: The steam temperature and steam pressure of the first preheating cylinder 401 and the second preheating cylinder 402 are collected in real time through temperature sensor 14 and pressure sensor 15, thereby reducing steam consumption.

[0035] Example 2

[0036] Proportional valves 9 are installed on the outer sides of the first preheating cylinder 401, the second preheating cylinder 402, and the single-sided corrugating machine body 3. The steam conveying assembly 7 includes a steam inlet pipe 701 installed on one side of the housing 2, a steam waste heat pipe 702 installed on one side of the single-sided corrugating machine body 3, a multi-port connecting pipe 703 installed at one end of the steam inlet pipe 701, and a multi-port connecting pipe 702 installed on and connected to the side of the liquid level tank 403. A first steam valve 10 is installed at one connection port of the steam inlet pipe 701 and the multi-port connecting pipe 703, and a second steam valve 11 is installed at one connection port of the liquid level tank 403 and the multi-port connecting pipe 703. The other two connection ports of the multi-port connecting pipe 703 are respectively connected to two proportional valves 9 above the first preheating cylinder 401 and the second preheating cylinder 402. The first preheating cylinder 401, the second preheating cylinder 402 and the liquid level tank 403 are all equipped with vent valves 12 on their outer sides, and steam return water pipes 13 are installed at the connection ports of the multiple vent valves 12.

[0037] Implementation process: The temperature and pressure of the preheating cylinder are collected in real time by a temperature and pressure sensor system. The temperature sensor 14 feeds back the temperature to the PLC controller 5. The PID controller 6 automatically adjusts the opening of the proportional valve 9 to achieve a constant temperature state for the corrugated roller and the preheating cylinder, reducing steam waste. The PID controller 6 (a feedback control system component in industrial control applications) automatically adjusts the opening of the proportional valve to ensure that the steam temperature is within the set value range. Energy consumption data is displayed visually. Secondary steam is used every day, saving primary steam in the preheating cylinder.

[0038] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A temperature and pressure control device for preheating in corrugated cardboard box production, characterized in that, include: A base plate (1) is provided, a housing (2) is installed on the top of the base plate (1), a single-sided corrugating machine body (3) is installed on the top of the base plate (1) and located on one side of the housing (2), a preheating component (4) is provided on the top of the base plate (1) and located on one side of the single-sided corrugating machine body (3), temperature and pressure control components are installed in both the preheating component (4) and the single-sided corrugating machine body (3), a PLC controller (5) and a PID controller (6) are installed on the front of the housing (2), and a steam conveying component (7) is provided on the top of the base plate (1).

2. The temperature and pressure control device for preheating in corrugated cardboard box production according to claim 1, characterized in that, The single-sided corrugating machine body (3) is equipped with a pressure roller (301), an upper corrugating roller (302) and a lower corrugating roller (303).

3. The temperature and pressure control device for preheating in corrugated cardboard box production according to claim 2, characterized in that, The preheating assembly (4) includes a first preheating cylinder (401) and a second preheating cylinder (402) installed above the base plate (1), and a liquid level tank (403) is installed above the first preheating cylinder (401) and the second preheating cylinder (402).

4. The temperature and pressure control device for preheating in corrugated cardboard box production according to claim 3, characterized in that, The temperature and pressure control components include a temperature sensor (14) and a pressure sensor (15) installed in the pressure roller (301), the upper corrugated roller (302), the lower corrugated roller (303), the first preheating cylinder (401), and the second preheating cylinder (402). A proportional valve (9) is installed on the outside of the first preheating cylinder (401), the second preheating cylinder (402), and the single-sided corrugating machine body (3).

5. The temperature and pressure control device for preheating in corrugated cardboard box production according to claim 4, characterized in that, The steam conveying assembly (7) includes a steam inlet pipe (701) installed on one side of the housing (2), a steam waste heat pipe (702) installed on one side of the single-sided corrugated machine body (3), a multi-port connecting pipe (703) installed at one end of the steam inlet pipe (701), and a steam waste heat pipe (702) installed on one side of the liquid level tank (403) and connected thereto.

6. The temperature and pressure control device for preheating in corrugated cardboard box production according to claim 5, characterized in that, A first steam valve (10) is installed at one of the connection ports of the steam inlet pipe (701) and the multi-way connecting pipe (703). A second steam valve (11) is installed at one of the connection ports of the liquid level tank (403) and the multi-way connecting pipe (703). The other two connection ports of the multi-way connecting pipe (703) are respectively connected to two proportional valves (9) above the first preheating cylinder (401) and the second preheating cylinder (402).

7. The temperature and pressure control device for preheating in corrugated cardboard box production according to claim 6, characterized in that, The first preheating cylinder (401), the second preheating cylinder (402) and the liquid level tank (403) are all equipped with vent valves (12), and steam return water pipes (13) are installed at the connection ports of the multiple vent valves (12).

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