Automatic pressure regulating system for wringer roller
The automatic pressure adjustment system for the squeeze rollers enables automatic adjustment and precise control of the squeeze roller pressure, solving the problems of unstable squeezing effect and equipment wear, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHOU IRON & STEEL CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technologies, the pressure adjustment of the squeeze rollers is not timely or stable, resulting in poor squeezing effect, increased equipment wear, and low production efficiency.
An automatic pressure adjustment system for the squeeze rollers is adopted, including a squeeze roller device, pressure pipeline and control circuit. The system uses pressure sensors and controllers to automatically adjust the pressure of the squeeze rollers, and uses telescopic cylinders and proportional pressure regulating valves to achieve precise pressure control.
It achieves automatic adjustment of squeeze roller pressure, precise pressure control, reduces equipment wear, and improves production efficiency and product quality.
Smart Images
Figure CN224366349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of squeeze roller pressure adjustment technology, and in particular to an automatic squeeze roller pressure adjustment system. Background Technology
[0002] In the production of cold-rolled steel coils, squeeze rolls are a key piece of equipment in the pickling process. They are primarily used to remove acid or moisture from the surface of the strip, preventing residual acid or moisture from affecting the quality of the sheet. However, due to variations in the thickness of the strip, the pressure applied by the squeeze rolls needs to be adjusted accordingly. When the strip thickness increases, the squeezing pressure needs to be reduced to prevent excessive squeezing, which could damage the strip surface or accelerate roll wear, increasing roll consumption and production costs. Conversely, when the strip thickness is thin, the squeezing pressure needs to be increased to effectively remove acid or moisture from the strip surface, ensuring a good squeezing effect. However, this also affects the surface inspection instrument's ability to detect surface defects, potentially leading to strip breakage within the mill.
[0003] Currently, squeeze roller pressure adjustment is mainly achieved by adjusting mechanical pressure reducing valves. This method requires manual adjustment on-site based on the pressure display results. This is not only time-consuming and labor-intensive, but also lacks timely adjustment. In actual production, because the thickness of the strip steel material changes continuously, manual adjustment is difficult to adjust the squeeze roller pressure accurately and in a timely manner, leading to unstable squeezing results. Sometimes, residual acid or moisture may remain on the strip surface, affecting product quality. Furthermore, untimely adjustment accelerates squeeze roller wear, increasing equipment maintenance costs and replacement frequency, impacting production continuity and stability. Therefore, there is an urgent need for a system that can automatically adjust squeeze roller pressure to improve squeezing results, reduce equipment wear, lower production costs, and improve production efficiency and product quality. Summary of the Invention
[0004] The purpose of this invention is to provide an automatic pressure adjustment system for squeeze rollers, addressing the aforementioned problems and resolving the technical issues in the prior art where untimely and unstable pressure adjustment of squeeze rollers leads to poor squeezing effect, increased equipment wear, and low production efficiency.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An automatic pressure regulating system for a squeeze roller includes a squeeze roller assembly, a pressure pipeline, and a control circuit. Both ends of the squeeze roller assembly are equipped with telescopic cylinders for adjusting the squeeze roller pressure. The pressure pipeline includes a pressure air source, a ball valve, a solenoid directional valve, a first one-way throttle valve, a second one-way throttle valve, and a proportional pressure regulating valve. The output end of the solenoid directional valve is connected to the pressure air source through the ball valve. One output end of the solenoid directional valve is connected to the proportional pressure regulating valve through the first one-way throttle valve. The proportional pressure regulating valve is also connected to the rod chambers of the two telescopic cylinders. The other output end of the solenoid directional valve is connected to the rodless chambers of the two telescopic cylinders through the second one-way throttle valve. The control circuit includes a pressure sensor and a controller. The pressure sensor is installed on the pipeline between the proportional pressure regulating valve and the telescopic cylinders. Both the pressure sensor and the proportional pressure regulating valve are connected to the controller. The controller receives the pressure signal from the pressure sensor and can control the outlet pressure value of the proportional pressure regulating valve.
[0007] Furthermore, the squeezing roller device includes an upper squeezing roller, a lower squeezing roller, a fixed seat, and a hinge seat. The fixed seat and the hinge seat are arranged in two pairs, alternating between each other. One end of the hinge seat is hinged to the fixed seat, and the other end is hinged to the extension rod of the telescopic cylinder. The fixed seat is fixedly installed. Both ends of the lower squeezing roller are rotatably connected to one of the fixed seats. The upper squeezing rollers are installed parallel to each other above the lower squeezing rollers, and both ends of the upper squeezing rollers are rotatably connected to one of the hinge seats.
[0008] Furthermore, it also includes a pneumatic triplet, which is installed between the ball valve and the solenoid directional valve.
[0009] Furthermore, the electromagnetic directional valve is a three-position five-way electromagnetic directional valve. The other end of the pneumatic triplet is connected to the middle position of the electromagnetic directional valve. The left position of the three-position five-way electromagnetic directional valve is connected to the proportional pressure regulating valve through the first one-way throttle valve. The right position of the three-position five-way electromagnetic directional valve is connected to the rodless chambers of the two telescopic cylinders through the second one-way throttle valve.
[0010] Furthermore, the controller is a controller with PID functionality.
[0011] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:
[0012] This invention enables automatic pressure adjustment of the squeeze roller device. After the pressure value is set, the control system can automatically adjust the pressure, and the pressure can be maintained within a relatively small error range, resulting in more precise pressure adjustment. It solves the technical problems in existing technologies where untimely and unstable pressure adjustment of the squeeze roller leads to poor squeezing effect, accelerated equipment wear, and low production efficiency. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the system structure of this utility model;
[0014] In the attached diagram, 1-pressure air source, 2-ball valve, 3-electromagnetic directional valve, 4-first one-way throttle valve, 5-second one-way throttle valve, 6-proportional pressure regulating valve, 7-pneumatic triplet, 8-telescopic cylinder, 9-upper squeeze roller, 10-lower squeeze roller, 11-fixed seat, 12-hinged seat, 13-pressure sensor, 14-controller. Detailed Implementation
[0015] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.
[0016] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0018] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0019] Please see Figure 1An automatic pressure regulating system for a squeeze roller includes a squeeze roller assembly, pressure pipelines, and a control circuit. Both ends of the squeeze roller assembly are equipped with telescopic cylinders 8 for adjusting the squeeze roller pressure. The pressure pipeline includes a pressure air source 1, a ball valve 2, a solenoid directional valve 3, a first one-way throttle valve 4, a second one-way throttle valve 5, and a proportional pressure regulating valve 6. The output end of the solenoid directional valve 3 is connected to the pressure air source 1 via the ball valve 2, and one output end of the solenoid directional valve 3 is connected to the proportional pressure regulating valve 6 via the first one-way throttle valve 4, enabling proportional pressure regulation. Valve 6 is also connected to the rod chambers of the two telescopic cylinders 8, and the other output end of the electromagnetic reversing valve 3 is connected to the rodless chambers of the two telescopic cylinders 8 through the second one-way throttle valve 5. The control circuit includes a pressure sensor 13 and a controller 14. The pressure sensor 13 is installed on the pipeline between the proportional pressure regulating valve 6 and the telescopic cylinders 8. Both the pressure sensor 13 and the proportional pressure regulating valve 6 are connected to the controller 14. The controller 14 receives the pressure signal from the pressure sensor 13 and can control the outlet pressure value of the proportional pressure regulating valve 6. Specifically, the pressure sensor 13 is used to detect the pressure in the rod chamber of the telescopic cylinder 8, and the installation position of the sensor 13 is kept within 0.5m of the rod chamber of the telescopic cylinder 8.
[0020] In this embodiment, the squeezing roller device includes an upper squeezing roller 9, a lower squeezing roller 10, a fixed seat 11, and a hinge seat 12. The fixed seat 11 and the hinge seat 12 are arranged in pairs and alternately. One end of the hinge seat 12 is hinged to the fixed seat 11, and the other end is hinged to the extension rod of a telescopic cylinder 8. The fixed seat 11 is fixedly installed. Both ends of the lower squeezing roller 10 are rotatably connected to a fixed seat 11. The upper squeezing rollers 9 are installed parallel to each other above the lower squeezing roller 10. Both ends of the upper squeezing roller 9 are rotatably connected to a hinge seat 12.
[0021] In this embodiment, a pneumatic triplet 7 is also included, which is installed between the ball valve 2 and the solenoid directional valve 3. The solenoid directional valve 3 is a three-position five-way solenoid directional valve 3. The other end of the pneumatic triplet 7 is connected to the middle position of the solenoid directional valve 3. The left position of the three-position five-way solenoid directional valve 3 is connected to the proportional pressure regulating valve 6 through the first one-way throttle valve 4, and the right position of the three-position five-way solenoid directional valve 3 is connected to the rodless chambers of the two telescopic cylinders 8 through the second one-way throttle valve 5. The pneumatic triplet 7 can be used to filter impurities and moisture introduced by the pressurized air source 1, which can prevent clogging of the valve core of the three-position five-way solenoid directional valve 3. One component of the pneumatic triplet is an oil cup that stores lubricating oil to lubricate the three-position five-way solenoid directional valve 3, ensuring that the three-position five-way solenoid directional valve 3 can be used normally. In this embodiment, the controller 14 is a controller with PID function. It adjusts the given current signal of the proportional pressure regulating valve according to the difference between the pressure value detected by the pressure sensor and the set pressure value. The proportional pressure regulating valve adopts current control and the secondary pressure regulation output pressure is 0-10 bar.
[0022] The working principle of this embodiment is as follows:
[0023] 1. The pressure sensor 13 and the controller 14 control the input current signal of the proportional pressure regulating valve 6 to adjust the outlet pressure of the proportional pressure regulating valve 6. The controller 14 adjusts the input current signal of the proportional pressure regulating valve 6 by comparing the pressure value measured by the pressure sensor 13 with the set pressure value, so that the outlet pressure value of the proportional pressure regulating valve 6 continuously approaches the set pressure value.
[0024] 2. When increasing the pressure of the squeezing roller device, when the upper squeezing roller 9 needs to be pressed down, the three-position five-way solenoid directional valve 3 is in the left position. The compressed air from the pressure air source 1 enters the rod chamber of the telescopic cylinder 8 after the pressure is regulated by the ball valve 2, the pneumatic triplet 7, the three-position five-way solenoid directional valve 3, the one-way throttle valve, and the proportional pressure regulating valve 6. The piston rod of the telescopic cylinder 8 retracts, driving the squeezing roller device to press down.
[0025] 3. When reducing the pressure of the squeezing roller device, when the upper squeezing roller 9 needs to be lifted, the three-position five-way solenoid valve 3 operates in the right position. The compressed air from the pressure air source 1 enters the rodless chamber of the telescopic cylinder 8 through the ball valve 2, the pneumatic triplet 7, the three-position five-way solenoid valve 3, and the one-way throttle valve. The piston rod of the telescopic cylinder 8 extends and drives the squeezing roller device to lift. After the squeezing roller is lifted to the position, the three-position five-way solenoid valve 3 returns to the middle position, and the compressed air does not pass through the three-position five-way solenoid valve 3. At this time, the system maintains pressure.
[0026] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.
Claims
1. An automatic pressure adjustment system for squeeze rollers, characterized in that: The system includes a squeeze roller assembly, pressure pipelines, and a control circuit. Both ends of the squeeze roller assembly are equipped with telescopic cylinders for adjusting the squeeze roller pressure. The pressure pipeline includes a pressure air source, a ball valve, a solenoid directional valve, a first one-way throttle valve, a second one-way throttle valve, and a proportional pressure regulating valve. The output end of the solenoid directional valve is connected to the pressure air source through the ball valve. One output end of the solenoid directional valve is connected to the proportional pressure regulating valve through the first one-way throttle valve. The proportional pressure regulating valve is also connected to the rod chambers of the two telescopic cylinders. The other output end of the solenoid directional valve is connected to the rodless chambers of the two telescopic cylinders through the second one-way throttle valve. The control circuit includes a pressure sensor and a controller. The pressure sensor is installed on the pipeline between the proportional pressure regulating valve and the telescopic cylinders. Both the pressure sensor and the proportional pressure regulating valve are connected to the controller. The controller receives the pressure signal from the pressure sensor and can control the outlet pressure value of the proportional pressure regulating valve.
2. The automatic pressure adjustment system for extrusion rollers according to claim 1, characterized in that: The squeezing roller device includes an upper squeezing roller, a lower squeezing roller, a fixed base, and a hinged base. The fixed base and the hinged base are arranged in two pairs, alternating between each other. One end of the hinged base is hinged to the fixed base, and the other end is hinged to the extension rod of the telescopic cylinder. The fixed base is fixedly installed. Both ends of the lower squeezing roller are rotatably connected to one of the fixed bases. The upper squeezing rollers are installed parallel to each other above the lower squeezing rollers, and both ends of the upper squeezing rollers are rotatably connected to one of the hinged bases.
3. The automatic pressure adjustment system for squeeze rollers according to claim 1, characterized in that: It also includes a pneumatic triplet, which is installed between the ball valve and the solenoid directional valve.
4. The automatic pressure adjustment system for squeeze rollers according to claim 3, characterized in that: The electromagnetic directional valve is a three-position five-way electromagnetic directional valve. The other end of the pneumatic triplet is connected to the middle position of the electromagnetic directional valve. The left position of the three-position five-way electromagnetic directional valve is connected to the proportional pressure regulating valve through the first one-way throttle valve. The right position of the three-position five-way electromagnetic directional valve is connected to the rodless chambers of the two telescopic cylinders through the second one-way throttle valve.
5. The automatic pressure adjustment system for extrusion rollers according to claim 1, characterized in that: The controller is a PID controller.