Cooling and pressurizing roller device for conveying belt

Abstract

The utility model relates to the technical field of conveying belt cooling, in particular to a conveying belt cooling pressurizing roller device which comprises pressurizing rollers arranged at intervals from top to bottom, cooling cavities arranged in a penetrating mode are formed in the two pressurizing rollers, and sealing end covers are fixedly installed at the two ends of each cooling cavity in a bolted mode. The outer side wall of each sealing end cover is coaxially and fixedly connected with an end shaft pipe, the outer side wall of each end shaft pipe is sleeved with a shaft sleeve, each shaft sleeve is fixedly connected with a vertically-arranged connecting column, and in the using state, each connecting column is used for being fixedly connected with external matched lifting equipment. And an inner cleaning unit is mounted in each cooling cavity. Cooling liquid in the cooling cavity is used for heat conduction, the gap between the pressurizing rollers is adjusted through external lifting equipment, cooling and pressurizing operation on the high-temperature conveying belt is completed at the same time, production efficiency is improved, the production process is simplified, and compared with a mode of independently cooling and pressurizing, equipment investment is reduced, and production time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt cooling technology, and in particular to a cooling and pressure roller device for producing PVC / PVG solid woven flame-retardant conveyor belts by extrusion. Background Technology

[0002] In industrial production, conveyor belts are widely used in various fields, such as food processing, chemicals, and building materials, as key equipment for material transportation. In many production processes, materials require cooling and pressurization during transport to achieve specific physical properties or quality requirements. Existing cooling and pressurization roller devices for producing PVC / PVG solid woven flame-retardant conveyor belts using the extrusion method typically consist of hollow steel rollers that are directly cooled by tap water. This method suffers from drawbacks such as easy scaling and blockage within the cavities and pipes, resulting in poor cooling performance.

[0003] A search revealed a patent document with patent application number 201621287746.9, which discloses a pressure roller device with a cooling system to prevent folding or tilting. This device achieves cooling by supplying coolant to the cooling roller through a liquid inlet pipe. However, this method has significant drawbacks:

[0004] First, the method of using a buffer spring inside the limiting cylinder and adjusting the pressure roller via a locking rod and locking plate results in poor pressure control precision in actual operation. Furthermore, due to the inherent characteristics of the buffer spring, its elasticity changes after prolonged use, leading to unstable pressure applied by the pressure roller and making it difficult to ensure consistent pressure on the material.

[0005] Secondly, the pressurization structure lacks sufficient adaptability when dealing with materials of different thicknesses and materials, and cannot quickly and easily adjust to a suitable pressure state, which seriously affects the stability of product quality.

[0006] Third, the circulation of coolant relies on a complex hydraulic cylinder and fluid delivery system, which not only increases equipment costs, but also makes maintenance difficult if a leak occurs in any part, which will seriously affect the continuity of production.

[0007] Therefore, developing a conveyor belt cooling and pressurizing roller device that can efficiently cool and precisely and uniformly apply pressure, and that is compact and easy to maintain, is of great practical significance. Utility Model Content

[0008] To solve one of the aforementioned technical problems, the present invention employs the following technical solution: a conveyor belt cooling and pressurizing roller device, comprising pressurizing rollers spaced apart from top to bottom, with a conveyor belt passing between two pressurizing rollers, and a through-type cooling chamber provided inside each of the two pressurizing rollers. Sealing end caps are bolted and fixedly installed at both ends of the cooling chambers, and end shaft tubes are coaxially fixed to the outer walls of each of the sealing end caps. A bushing is sleeved on the outer walls of each of the end shaft tubes, and a vertically arranged connecting column is fixedly connected to each bushing. In use, each connecting column is used to be fixedly connected to an externally matched lifting device. The two pressurizing rollers pressurize the conveyor belt under the driving action of the external lifting device, and an internal cleaning unit is installed inside each of the cooling chambers.

[0009] By utilizing the heat conduction of the coolant within the cooling chamber, heat is transferred to the pressure rollers, thereby cooling the surface of the conveyor belt. The pressure on the conveyor belt is achieved by adjusting the gap between the pressure rollers through an external lifting device, ultimately cooling the high-temperature conveyor belt.

[0010] This process cools and pressurizes high-temperature conveyor belts, effectively reducing their temperature and ensuring stable performance during subsequent production. The pressurization process also helps to make the conveyor belt structure more compact, improving its physical properties.

[0011] Based on any of the above technical solutions, a further optimization is made: a driven sprocket is coaxially fixed to one of the end shaft tubes of the pressure roller, and the driven sprocket is driven to rotate by an external drive device.

[0012] Based on any of the above technical solutions, a further optimization is made as follows: a liquid inlet is provided at one end of the cooling chamber and a liquid outlet is provided at the other end. A liquid inlet pipe connector is installed at the liquid inlet and a liquid outlet pipe connector is installed at the liquid outlet. Both the liquid inlet pipe connector and the liquid outlet pipe connector are connected to an external cold source pool through a pipeline with a pump.

[0013] Based on any of the above technical solutions, a further optimization is made as follows: the internal cleaning unit includes a horizontal liquid guide tube coaxially disposed inside the cooling chamber, and a plurality of spray holes are provided at intervals along the length direction on the surface of each horizontal liquid guide tube. Both ends of the horizontal liquid guide tube are movable and sealed through the cavity of the end shaft tube and extend to the outside.

[0014] Based on any of the above technical solutions, a further optimization is made by fixing a plurality of manual levers at even intervals along the circumference of the outer side wall of the end of the horizontal liquid guide tube, and moving each of the manual levers can drive the horizontal liquid guide tube to rotate.

[0015] Based on any of the above technical solutions, a further optimization is made: the two ends of the horizontal liquid guide tube are integrally fixedly connected to the liquid inlet pipe joint and the liquid outlet pipe joint at their corresponding positions and are internally connected.

[0016] Based on any of the above technical solutions, a further optimization is made: a pressurizing nozzle is welded and fixed on the outer wall of the horizontal liquid guide tube corresponding to each of the injection holes.

[0017] Based on any of the above technical solutions, a further optimization is made: several sealing rings are installed on the outer wall of each of the liquid inlet pipe joints and each of the liquid outlet pipe joints.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model can achieve integrated cooling and pressurization. By using the heat conduction of the coolant inside the cooling chamber and adjusting the gap of the pressurizing rollers through the external lifting equipment, the cooling and pressurization operations of the high-temperature conveyor belt can be completed simultaneously, improving production efficiency and simplifying the production process. Compared with separate cooling and pressurization methods, it reduces equipment investment and production time.

[0020] 2. This utility model is equipped with an internal cleaning unit, which regularly introduces descaling agents such as oxalic acid and works in conjunction with it to effectively remove scale in the cooling chamber, ensure the heat conduction performance of the pressure roller, ensure stable operation of the cooling function, avoid the decrease in cooling effect due to scale accumulation, thereby extending the service life of the equipment and reducing maintenance costs.

[0021] 3. The external drive equipment drives the driven sprocket to rotate the pressure roller slowly, which improves the extrusion processing effect and the sloshing of the coolant, making the cooling and pressurization more uniform, improving the processing quality of the conveyor belt, and ensuring the stable performance of the conveyor belt in subsequent production processes.

[0022] 4. The gap between the two pressure rollers can be adjusted by external lifting equipment to match conveyor belts of different thicknesses, which enhances the versatility of the device and makes it applicable to the cooling and pressurization treatment of various specifications of conveyor belts, thus expanding the application range of the equipment.

[0023] 5. Install sealing rings on the outer walls of the inlet and outlet pipe joints to effectively prevent coolant leakage, ensure the normal operation of the cooling system, avoid damage to equipment and working environment caused by coolant leakage, and improve the reliability and stability of the equipment. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0027] Figure 3 This is a schematic diagram of the test structure of this utility model.

[0028] Figure 4 This is a partial internal cross-sectional view of the present invention.

[0029] Parts list: 1. Pressure roller; 2. Cooling chamber; 3. Sealing end cover; 4. End shaft tube; 5. Bushing; 6. Connecting column; 7. Driven sprocket; 8. Inlet pipe connector; 9. Outlet pipe connector; 10. Horizontal guide pipe; 11. Injection hole; 12. Manual lever; 13. Pressure nozzle; 14. Sealing ring; 15. Conveyor belt. Detailed Implementation

[0030] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of the present utility model, and are therefore merely examples and should not be construed as limiting the scope of protection of the present utility model. The specific structure of the present utility model is as follows: Figures 1-4 As shown in the image.

[0031] Example 1: A conveyor belt cooling and pressure roller device includes pressure rollers 1 spaced apart from top to bottom. A conveyor belt 15 passes between two pressure rollers 1. Each pressure roller 1 has a through cooling chamber 2. Sealing end caps 3 are bolted and fixed to both ends of the cooling chamber 2. End shaft tubes 4 are coaxially fixed to the outer side wall of each sealing end cap 3. A bushing 5 is sleeved on the outer side wall of each end shaft tube 4. A vertically arranged connecting column 6 is fixed to each bushing 5. In use, each connecting column 6 is used to be fixed to an external lifting device. The two pressure rollers 1 pressurize the conveyor belt 15 under the driving action of the external lifting device. An internal cleaning unit is installed inside each cooling chamber 2.

[0032] When the conveyor belt cooling and pressure roller device is working, sufficient cooling water is pre-entered into the cooling chamber 2, and the gap between the two pressure rollers 1 is controlled to match the thickness of the current conveyor belt 15. When the conveyor belt 15 is continuously pulled forward, the two pressure rollers 1 can cool the surface of the conveyor belt 15 under the heat conduction of the coolant. The gap between the two pressure rollers 1 is adjusted by external lifting equipment to achieve the purpose of pressurizing the conveyor belt. The high temperature conveyor belt 15 is cooled down by pressurization and cooling.

[0033] By utilizing the heat conduction of the coolant in the cooling chamber 2, heat is transferred to the pressure roller 1, thereby cooling the surface of the conveyor belt 15; by adjusting the gap of the pressure roller 1 through an external lifting device, pressure is applied to the conveyor belt 15, ultimately achieving the effect of cooling the high-temperature conveyor belt 15.

[0034] The high-temperature conveyor belt 15 is cooled and pressurized, which effectively reduces the temperature of the conveyor belt 15 and ensures the stable performance of the conveyor belt 15 in the subsequent production process. At the same time, the pressurization treatment helps to make the structure of the conveyor belt more compact and improve its physical properties.

[0035] In addition, in some material processing technologies with specific temperature and pressure requirements, this device can be used to simulate specific temperature and pressure environments for material pretreatment or testing. For example, in the research and development of certain new composite materials, this device can be used to provide temperature and pressure conditions similar to those in actual use environments to observe changes in material properties.

[0036] Oxalic acid and other descaling agents are periodically introduced into the cooling chamber 2. The descaling agents react chemically with the scale in the cooling chamber 2, and with the help of the internal cleaning unit, the scale is removed, maintaining the good heat conduction performance of the pressure roller 1.

[0037] Based on any of the above technical solutions, a further optimization is made: a driven sprocket 7 is coaxially fixed to one of the end shaft tubes 4 of the pressure roller 1, and the driven sprocket 7 is driven to rotate by an external drive device.

[0038] By driving the driven sprocket 7 to rotate the pressure roller 1, the extrusion processing effect and the sloshing of the coolant can be effectively improved, thereby improving the pressurization and cooling effect of the entire device and optimizing the working performance of the device.

[0039] Based on any of the above technical solutions, a further optimization is made as follows: a liquid inlet is provided at one end of the cooling chamber 2 and a liquid outlet is provided at the other end. A liquid inlet pipe connector 8 is installed at the liquid inlet and a liquid outlet pipe connector 9 is installed at the liquid outlet. Both the liquid inlet pipe connector 8 and the liquid outlet pipe connector 9 are connected to an external cold source pool through a pump-equipped pipeline.

[0040] The coolant in the external cold source pool is pumped from the inlet pipe joint 8 to the inlet end of the cooling chamber 2 via a pump-connected pipeline. After circulating within the cooling chamber 2, the coolant flows back to the external cold source pool from the outlet end via the outlet pipe joint 9, thus achieving coolant circulation. The design of the inlet end, outlet end, and the connection of the pump-connected pipeline to the external cold source pool ensures a continuous supply and circulation of coolant, maintains the cooling capacity of the cooling chamber 2, and ensures the stability of the cooling effect. This circulation design also effectively saves on coolant usage and reduces production costs.

[0041] Based on any of the above technical solutions, the following further optimization is made: the internal cleaning unit includes a horizontal liquid guide tube 10 coaxially disposed inside the cooling chamber 2, and a plurality of spray holes 11 are provided at intervals along the length direction on the surface of each horizontal liquid guide tube 10. Both ends of the horizontal liquid guide tube 10 are movable and sealed through the cavity of the end shaft tube 4 and extend to the outside.

[0042] When it is necessary to clean the cooling chamber 2, descaling agent is introduced into the horizontal liquid guide pipe 10. The descaling agent is sprayed out from the spray hole 11 to rinse the inner wall of the cooling chamber 2. The two ends of the horizontal liquid guide pipe 10 pass through the end shaft pipe 4 and extend to the outside, which facilitates connection with external equipment to deliver descaling agent. At the same time, its movable and sealed design can ensure that the cleaning operation can be carried out without affecting the normal operation of the cooling chamber 2.

[0043] The design of the horizontal liquid guide tube 10 and the spray hole 11 enables the descaling agent to be sprayed evenly on the inner wall of the cooling chamber 2, improving the cleaning effect; the design of the two ends being movable and sealed through the end shaft tube 4 not only facilitates the connection with the outside to transport the descaling agent, but also ensures the sealing of the cooling chamber 2 and does not affect the normal operation of the device.

[0044] Based on any of the above technical solutions, a further optimization is made as follows: a plurality of manual levers 12 are fixedly installed at uniform intervals along the circumference of the outer side wall of the end of the horizontal liquid guide tube 10, and moving each of the manual levers 12 can drive the horizontal liquid guide tube 10 to rotate.

[0045] The operator moves the manual lever 12 to rotate the horizontal liquid guide tube 10 around its own axis, changing the spray angle of the spray hole 11, thereby achieving a more comprehensive cleaning of different locations on the inner wall of the cooling chamber 2. The auxiliary internal cleaning unit achieves a more comprehensive cleaning, ensuring that scale on all parts of the inner wall of the cooling chamber 2 is effectively removed, further guaranteeing the heat transfer effect of the pressure roller 1.

[0046] Example 2: Compared with Example 1, this example also includes the following technical features:

[0047] Based on any of the above technical solutions, a further optimization is made: the two ends of the horizontal liquid guide tube 10 are integrally fixedly connected to the liquid inlet pipe joint 8 and the liquid outlet pipe joint 9 at their corresponding positions and are internally connected.

[0048] The descaling agent enters through the inlet pipe joint 8, passes through the horizontal liquid guide pipe 10 which is integrally connected to and internally communicates with the inlet pipe joint 8, and is sprayed out from the spray hole 11 to clean the cooling chamber 2. The cleaned liquid then flows through the horizontal liquid guide pipe 10 to the outlet pipe joint 9 and is discharged from the cooling chamber 2.

[0049] Based on any of the above technical solutions, a further optimization is made: a pressurizing nozzle 13 is welded and fixed on the outer wall of the horizontal liquid guide tube 10 corresponding to each of the spray holes 11.

[0050] When the descaling agent is sprayed out from the spray hole 11 of the horizontal liquid guide pipe 10, the pressurizing nozzle 13 pressurizes the descaling agent, so that the descaling agent is sprayed onto the inner wall of the cooling chamber 2 at a higher pressure, thereby enhancing the cleaning effect.

[0051] Based on any of the above technical solutions, a further optimization is made: several sealing rings 14 are installed on the outer walls of each of the liquid inlet pipe joints 8 and each of the liquid outlet pipe joints 9.

[0052] The installation of sealing ring 14 effectively solves the problem of coolant leakage, ensures the sealing performance of the cooling system, improves the reliability of the device, and prevents coolant leakage from damaging the equipment and working environment.

[0053] During operation, the cooling chamber 2 has an inlet and an outlet end, each fitted with an inlet pipe connector 8 and an outlet pipe connector 9, respectively. These connectors are connected to an external cold source tank via a pump-connected pipeline. During operation, the external pump delivers coolant from the cold source tank to the cooling chamber 2 via the inlet pipe connector 8. After absorbing heat within the chamber, the coolant flows back to the cold source tank through the outlet pipe connector 9, forming a circulation. During this circulation, the low temperature of the coolant cools the pressure rollers 1 through heat conduction, thereby cooling the surface of the conveyor belt passing between the two pressure rollers 1.

[0054] The connecting column 6 is moved up and down by an external lifting device, which in turn moves the pressure roller 1 up and down, thereby adjusting the gap between the two pressure rollers 1 and pressurizing the conveyor belt. During the pressurization process, the gap size is precisely controlled according to the thickness of the conveyor belt to ensure that appropriate pressure is applied to the conveyor belt.

[0055] When the cooling chamber 2 requires cleaning, a descaling agent such as oxalic acid is introduced into the horizontal liquid guide pipe 10. The descaling agent is sprayed out at high pressure from the spray hole 11 through the pressurized nozzle 13, flushing the inner wall of the cooling chamber 2. The operator can also rotate the horizontal liquid guide pipe 10 by moving the manual lever 12 to adjust the spray angle, achieving comprehensive cleaning of different parts of the inner wall of the cooling chamber 2. The cleaned liquid is discharged from the outlet pipe joint 9 through the horizontal liquid guide pipe 10.

[0056] A driven sprocket 7 is coaxially fixed to one end shaft tube 4 of the pressure roller 1. An external drive device drives the driven sprocket 7 to rotate, which in turn drives the pressure roller 1 to rotate slowly. This design can improve the extrusion process and enhance the pressurization and cooling effects.

[0057] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. For those skilled in the art, any alternative improvements or transformations made to the implementation of this utility model fall within the protection scope of this utility model.

[0058] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A conveyor belt cooling and pressure roller device, characterized in that: The device includes pressure rollers spaced apart from top to bottom, with a conveyor belt passing between two pressure rollers. Each pressure roller has a through-type cooling chamber inside. Sealing end caps are bolted and fixed to both ends of the cooling chambers. An end shaft tube is coaxially fixed to the outer wall of each sealing end cap. A bushing is fitted onto the outer wall of each end shaft tube. A vertically arranged connecting column is fixed to each bushing. In use, each connecting column is used to connect to an external lifting device. The two pressure rollers pressurize the conveyor belt under the drive of the external lifting device. An internal cleaning unit is installed inside each cooling chamber.

2. The conveyor belt cooling and pressure roller device according to claim 1, characterized in that: A driven sprocket is coaxially fixed to one of the end shaft tubes of the pressure roller, and the driven sprocket is driven to rotate by an external drive device.

3. The conveyor belt cooling and pressure roller device according to claim 2, characterized in that: A liquid inlet is provided at one end of the cooling chamber and a liquid outlet is provided at the other end. A liquid inlet pipe connector is installed at the liquid inlet and a liquid outlet pipe connector is installed at the liquid outlet. Both the liquid inlet pipe connector and the liquid outlet pipe connector are connected to an external cold source pool through a pipeline with a pump.

4. The conveyor belt cooling and pressure roller device according to claim 3, characterized in that: The internal cleaning unit includes a horizontal liquid guide tube coaxially disposed inside the cooling chamber. Several spray holes are spaced apart on the surface of each horizontal liquid guide tube along its length. Both ends of the horizontal liquid guide tube are movable and sealed through the cavity of the end shaft tube and extend to the outside.

5. The conveyor belt cooling and pressure roller device according to claim 4, characterized in that: Several manual levers are fixedly installed at even intervals along the circumference of the outer wall of the end of the horizontal liquid guide tube. Moving each of the manual levers can drive the horizontal liquid guide tube to rotate.

6. The conveyor belt cooling and pressure roller device according to claim 5, characterized in that: The two ends of the horizontal liquid guide tube are integrally fixed to the liquid inlet pipe joint and the liquid outlet pipe joint at their corresponding positions and are internally connected.

7. The conveyor belt cooling and pressure roller device according to claim 6, characterized in that: A pressurized nozzle is welded and fixed to the outer wall of the horizontal liquid guide tube corresponding to each of the injection holes.

8. The conveyor belt cooling and pressure roller device according to claim 7, characterized in that: Several sealing rings are installed on the outer wall of each of the aforementioned inlet pipe joints and each of the aforementioned outlet pipe joints.

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