Rubber drying device and drying method

Abstract

The rubber drying device comprises a drying box, a heat supply module, a vacuumizing module and a nitrogen supply module, a drying cavity is formed in the drying box, a to-be-dried rubber material can be placed in the drying cavity, the heat supply module is located in the drying cavity, and the to-be-dried rubber material can be dried by supplying heat to the drying cavity. The vacuumizing module can vacuumize the drying cavity before the rubber material is dried, so that the internal air pressure of the drying cavity is reduced, the temperature required for drying the rubber material is reduced, the aging of the rubber material is avoided, and after the rubber material is dried, the water drops on the surface of the rubber material are evaporated. The nitrogen supply module introduces nitrogen into the drying cavity, so that the rubber material is cooled in a nitrogen environment, the rubber material is protected, and the rubber material is prevented from aging in the cooling process; through protection in the drying and cooling processes, aging of the rubber materials is effectively avoided, and the performance of the rubber materials is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of rubber production, and in particular to a rubber drying device and a drying method. Background Art

[0002] Synthetic rubber is a highly elastic polymer synthesized by humans. The production process of synthetic rubber can be roughly divided into three parts: monomer synthesis and refining, polymerization process and rubber post-processing. Drying of synthetic rubber is an important process step in post-processing. Therefore, the post-processing drying equipment of synthetic rubber is also particularly important.

[0003] The rubber is dried mainly by separating the water vapor from the rubber body, such as the constant temperature drying oven for rubber preheating disclosed in the patent document with publication number CN108081502A. The constant temperature drying oven includes an oven, a fixing plate is fixedly installed on the bottom of the box body, heaters are installed on both sides of the top wall of the box body, and a temperature detector is also installed on the top of the box body. The constant temperature drying oven dries the rubber by providing high temperature to the box body through the heater, and can automatically enter the low temperature zone after high temperature drying.

[0004] Although the drying oven can achieve rapid drying of rubber by generating high temperature acting on the cavity, long-term exposure of rubber to high temperature environment is prone to cause rubber aging, thereby reducing the performance of the rubber. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies, to provide a rubber drying device and a drying method, and to solve the technical problem in the prior art that rubber is easily aged during the drying process, resulting in reduced rubber performance.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a rubber drying device, comprising: A drying box having a drying chamber therein; A heating module, located in the drying chamber, for supplying heat to the drying chamber; A vacuum module, connected to the drying box, for vacuuming the drying chamber; and The nitrogen supply module is communicated with the drying chamber and is used for supplying nitrogen into the drying chamber.

[0007] In some embodiments, the rubber drying device further comprises an air outlet module, the drying box is provided with an air outlet hole, the air outlet hole is connected to the drying chamber, and the air outlet module is installed in the drying box for leading the gas in the drying chamber out of the drying chamber through the air outlet hole.

[0008] In some embodiments, the air outlet module includes an induced draft fan and an air outlet box. The air outlet box is located in the drying chamber and is connected to the drying chamber through a connecting hole. The air outlet hole is connected to the air outlet box. The induced draft fan extends to the air outlet box to introduce the gas in the drying chamber into the air outlet box.

[0009] In some embodiments, the induced draft fan includes an induced draft drive component and an induced draft wheel. The induced draft drive component is installed in the drying box. The induced draft wheel is connected to the induced draft drive component and is located in the air outlet box. The induced draft wheel is provided with a plurality of induced draft blades at intervals along the circumferential direction. The induced draft drive component is used to drive the induced draft wheel to rotate so that the induced draft blades introduce the gas in the drying chamber into the air outlet box.

[0010] In some embodiments, the heating module includes a uniform heating chamber and a plurality of heating elements. The uniform heating chamber is disposed on both sides of the drying chamber. The heating elements are evenly spaced along the extension direction of the uniform heating chamber for heating the uniform heating chamber.

[0011] In some embodiments, the drying box is provided with a placement opening and a slide rail, the slide rail is located on both sides of the placement opening and extends along the length direction of the drying box, the drying box is provided with an upper cover assembly, the upper cover assembly includes a connecting frame, a horizontal driving member, a vertical driving member and a cover plate, the connecting frame is slidably connected to the slide rail, the horizontal driving member is connected to the connecting frame and is used to drive the connecting frame to slide, the vertical driving member is installed on the connecting frame and connected to the cover plate, and is used to drive the cover plate to drive the placement opening along the height direction of the drying box.

[0012] In some embodiments, the rubber drying device further comprises a placement rack, which is located in the drying chamber and detachably mounted on the drying box, and the placement rack is provided with a plurality of placement slots spaced apart from each other, and the placement slots are used to place the rubber material to be dried.

[0013] In a second aspect, the present invention further provides a rubber drying method, which is performed by the rubber drying device, comprising the following steps: The rubber to be dried is placed in a drying chamber; The vacuum unit vacuums the drying chamber; A heating unit heats the drying chamber to dry the rubber; The nitrogen supply module supplies nitrogen to the drying chamber so that the rubber is cooled in a nitrogen environment.

[0014] In some embodiments, after the step of placing the rubber to be dried in the drying chamber, the vertical driving member drives the cover plate to close.

[0015] In some embodiments, in the step of the nitrogen supply module supplying nitrogen into the drying chamber, the gas outlet module guides the nitrogen in the drying chamber out of the drying chamber through the gas outlet hole.

[0016] Compared with the prior art, the rubber drying device provided by the present invention is provided with a drying box, a heating module, a vacuum module and a nitrogen supply module. A drying chamber is provided in the drying box, and the rubber material to be dried can be placed in the drying chamber. The heating module is located in the drying chamber, and can evaporate water droplets on the surface of the rubber material by supplying heat to the drying chamber, thereby achieving drying of the rubber material. Since the rubber drying device is provided with a vacuum module and a nitrogen supply module, and the vacuum module is connected to the drying box, before the rubber material is dried, the drying chamber can be vacuumed to reduce the internal air pressure of the drying chamber, reduce the boiling point of water, and thus reduce the temperature required for drying the rubber material to avoid aging of the rubber material. After the rubber material is dried, the nitrogen supply module introduces nitrogen into the drying chamber, so that the rubber material is cooled in a nitrogen environment, and the rubber material is protected, thereby preventing the rubber material from aging during the cooling process; through the protection of the drying and cooling processes, the aging of the rubber material is effectively avoided, and the performance of the rubber material is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a rubber drying device provided by an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a hidden upper cover assembly of a rubber drying device provided by an embodiment of the present invention; Figure 3 The present invention provides a flowchart of a rubber drying method.

[0018] Reference numerals in the figures: 10—Drying box 11—Drying chamber 12—Air filling hole 13—Placement port 14—Slide rail 15—Air outlet 20—heating module 21—heating chamber 22—heating element 30—Upper cover assembly 31—Connecting frame 32—Horizontal driving member 33 - vertical drive member 34 - cover plate 40 - placement rack 41—Placement slot 50—Air outlet module 51—Induced draft fan 52—air outlet box 511—inducing draft drive 512—inducing draft wheel 10a—Rubber materials. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In order to solve the technical problem in the prior art that rubber is easily aged during the drying process, resulting in reduced rubber performance, the present invention provides a rubber drying device and a drying method. The rubber drying device protects the rubber during the drying and cooling processes by lowering the drying temperature during the drying process and providing an inert gas environment for the rubber during the cooling process, thereby effectively avoiding aging of the rubber material and ensuring the performance of the rubber material.

[0021] It should be noted that the rubber drying device described in the present invention is used for but not limited to drying of rubber materials, etc. For the convenience of explanation, in the present invention, only the application of the rubber drying device to the drying of rubber materials is used as an example for explanation, and the principle of the rubber drying device being applied to other types of equipment is substantially the same as the principle applied to the drying of rubber materials, which will not be described one by one here.

[0022] The rubber drying device provided by the embodiment of the present invention is as follows: Figure 1-2 As shown, it includes a drying box 10, a heating module 20, a vacuum module and a nitrogen supply module. A drying chamber 11 is provided in the drying box 10; the heating module 20 is located in the drying chamber 11 and is used to heat the drying chamber 11; the vacuum module is connected to the drying box 10 and is used to vacuum the drying chamber 11; the nitrogen supply module is connected to the drying chamber 11 and is used to supply nitrogen to the drying chamber 11.

[0023] Specifically, the rubber drying device is provided with a drying box 10, a heating module 20, a vacuum module (not shown in the figure) and a nitrogen supply module (not shown in the figure). A drying chamber 11 is provided inside the drying box 10. The drying chamber 11 can be used to place the rubber material 10a to be dried. The heating module 20 is located in the drying chamber 11. By heating the drying chamber 11, water droplets on the surface of the rubber material 10a evaporate, thereby drying the rubber material 10a. Since the rubber drying device is provided with a vacuum module and a nitrogen supply module, the vacuum module is connected to the drying box 10. Before the rubber material 10a is dried, The drying chamber 11 can be evacuated to reduce the internal air pressure of the drying chamber 11, so as to reduce the boiling point of water, thereby reducing the temperature required for drying the rubber material 10a, so as to prevent the aging of the rubber material 10a. After the rubber material 10a is dried, the heat supply to the dryer chamber is stopped. At the same time, the nitrogen supply module introduces nitrogen into the drying chamber 11, so that the rubber material 10a is cooled in a nitrogen environment, and the rubber material 10a is protected, so as to prevent the aging of the rubber material 10a during the cooling process; through the protection of the drying and cooling processes, the aging of the rubber material 10a is effectively avoided, and the performance of the rubber material 10a is guaranteed.

[0024] It can be understood that the heating module 20 can be any heating device that can heat the drying chamber 11, such as a heating rod, a hot air blower, etc.

[0025] In one embodiment, if Figure 1-2 As shown, the heating module 20 includes a uniform heat chamber 21 and a plurality of heating elements 22. The uniform heat chamber 21 is arranged on both sides of the drying chamber 11. The heating elements 22 are evenly spaced along the extension direction of the uniform heat chamber 21, and are used to heat the uniform heat chamber 21. Specifically, when each heating element 22 is powered on, the uniform heat chamber 21 can be heated. The heat is first evenly diffused to the uniform heat chamber 21 through the air in the uniform heat chamber 21, and then diffused to the drying chamber 11 through the uniform heat chamber 21, so that the heat can be evenly diffused to the drying chamber 11, thereby avoiding local overheating of the drying chamber 11 and the rubber material 10a, causing local aging of the rubber material 10a. Since the heating module 20 heats the chamber, the drying chamber 11 will be vacuumed by the vacuum module, so that the air content in the drying chamber 11 is less, and it is difficult to evenly diffuse the heat. In this embodiment, through the arrangement of the uniform heat chamber 21, the heat can be evenly diffused before being introduced into the drying chamber 11, so that the heat in the drying chamber 11 can be kept uniform.

[0026] It can be understood that the vacuum pump module can be any vacuum pump or other vacuum pumping equipment that can evacuate the drying chamber 11 .

[0027] It can be understood that the nitrogen supply module can be any nitrogen filling device such as a nitrogen bottle, a nitrogen filling machine, etc. that can fill the drying chamber 11 with nitrogen.

[0028] In this embodiment, Figure 1-2 As shown, a gas filling hole 12 is provided at the bottom of the drying box 10, and the nitrogen supply module is connected to the gas filling hole 12. When the vacuum pumping module performs a vacuum pumping operation, the valve of the nitrogen supply module is closed.

[0029] In one embodiment, if Figure 1 As shown, the drying box 10 is provided with a placement opening 13 and a slide rail 14, the slide rail 14 is located on both sides of the placement opening 13 and extends along the length direction of the drying box 10, the drying box 10 is provided with an upper cover assembly 30, the upper cover assembly 30 includes a connecting frame 31, a horizontal driving member 32, a vertical driving member 33 and a cover plate 34, the connecting frame 31 is slidably connected to the slide rail 14, the horizontal driving member 32 is connected to the connecting frame 31, and is used to drive the connecting frame 31 to slide, the vertical driving member 33 is installed on the connecting frame 31 and connected to the cover plate, and is used to drive the cover plate 34 to drive the placement opening 13 along the height direction of the drying box 10.

[0030] Specifically, the cover plate 34 is connected to the vertical driving member 33, and the placement opening 13 can be set along the height direction of the drying box 10 by the driving cover of the vertical driving member 33. The rubber material 10a to be dried can be placed in the drying chamber 11 through the placement opening 13. The connecting frame 31 can drive the cover plate 34 to move to the upper side of the placement opening 13 or away from the placement opening 13 by moving along the slide rail 14. Through the setting of this structure, when the rubber material 10a is placed in the drying chamber 11, the vertical driving member 33 drives the cover plate 34 to lift up, so that the cover plate 34 is away from the drying box 10, and then the horizontal driving member 33 drives the cover plate 34 to lift up, so that the cover plate 34 is away from the drying box 10. The movable member 32 drives the connecting frame 31 to move horizontally, driving the cover plate 34 away from the placement opening 13, and then the rubber material 10a to be dried is placed in the drying chamber 11. After the placement is completed, the horizontal driving member 32 drives the connecting frame 31 to move horizontally, driving the cover plate 34 to move to the upper side of the placement opening 13, and then the vertical driving member 33 drives the cover plate 34 to descend. At this time, the cover plate 34 is covered on the placement opening 13 to seal the placement opening 13, thereby realizing the automatic opening and closing of the drying box 10, and the sealing strength of the placement opening 13 is ensured by pressing the vertical driving member 33.

[0031] In this embodiment, the horizontal driving member 32 and the vertical driving member 33 are both cylinders.

[0032] In one embodiment, if Figure 1-2 As shown, the rubber drying device further includes a placement rack 40, which is located in the drying chamber 11 and detachably mounted on the drying box 10. The placement rack 40 is provided with a plurality of placement slots 41 spaced apart from each other, and the placement slots 41 are used to place the rubber material 10a to be dried. Specifically, before drying the rubber material 10a, the rubber material 10a can be packed and placed in the placement slots 41, and then the placement rack 40 is placed from the placement port 13 and mounted on the drying box 10. After drying, it is only necessary to take out the placement rack 40 as a whole, thereby providing convenience for placing and taking out the rubber material 10a.

[0033] In one embodiment, if Figure 1-2 As shown, the rubber drying device further includes an air outlet module 50. The drying box 10 is provided with an air outlet 15, and the air outlet 15 is connected to the drying chamber 11. The air outlet module 50 is installed in the drying box 10, and is used to lead the gas in the drying chamber 11 out of the drying chamber 11 through the air outlet 15. Specifically, during the cooling process of the rubber material 10a, the nitrogen supply module supplies nitrogen to the drying chamber 11 to absorb the heat of the drying chamber 11, and the air outlet module 50 leads the nitrogen out of the air outlet 15, thereby ensuring that the nitrogen in the drying chamber 11 is always in a flowing state, realizing rapid cooling of the drying chamber 11, and ensuring the cooling efficiency of the rubber material 10a.

[0034] In this embodiment, Figure 1-2As shown, the air outlet 15 is provided with a hole cover, which is located on the outside of the drying box 10. When the vacuum module performs a vacuum operation, the hole cover covers the air outlet 15 under the action of external air pressure. During the nitrogen extraction process, the hole cover opens the air outlet 15 under the blowing of the gas.

[0035] It can be understood that the gas outlet module 50 can be any device that can be connected to the gas outlet hole 15 , such as a vacuum pumping device, and can lead nitrogen out of the drying chamber 11 .

[0036] In one embodiment, if Figure 1-2 As shown, the air outlet module 50 includes an induced draft fan 51 and an air outlet box 52. The air outlet box 52 is located in the drying chamber 11 and is connected to the drying chamber 11 through a connecting hole. The air outlet hole 15 is connected to the air outlet box 52. The induced draft fan 51 extends to the air outlet box 52 to introduce the gas in the drying chamber 11 into the air outlet box 52. Specifically, the induced draft fan 51 first introduces the nitrogen in the drying chamber 11 into the air outlet box 52, and then discharges it from the air outlet hole 15. Through the arrangement of the air outlet box 52, the nitrogen can be formed to flow in the drying box 10, and the residence time of the nitrogen in the drying box 10 can be increased, thereby reducing the consumption of nitrogen.

[0037] In one embodiment, if Figure 1-2 As shown, the induced draft fan 51 includes an induced draft driving member 511 and an induced draft wheel 512. The induced draft driving member 511 is installed on the drying box 10. The induced draft wheel 512 is connected to the induced draft driving member 511 and is located in the air outlet box 52. The induced draft wheel 512 is provided with a plurality of induced draft blades at intervals along the circumferential direction. The induced draft driving member 511 is used to drive the induced draft wheel 512 to rotate so that the induced draft blades introduce the gas in the drying chamber 11 into the air outlet box 52. Specifically, the induced draft driving member 511 drives the induced draft blades of the induced draft wheel 512 to rotate, thereby introducing the nitrogen in the drying chamber 11 into the air outlet box 52, thereby achieving the introduction of nitrogen into the air outlet box 52.

[0038] The embodiment of the present invention also provides a rubber drying method, such as Figure 1-3 As shown, the rubber drying device is implemented, including the following steps: The rubber to be dried is placed in a drying chamber 11; The vacuum unit evacuates the drying chamber 11; The heating unit heats the drying chamber 11 to dry the rubber; The nitrogen supply module supplies nitrogen to the drying chamber 11 so that the rubber is cooled in a nitrogen environment.

[0039] Specifically, through the above-mentioned drying steps of the rubber material 10a, before the drying of the rubber material 10a, the drying chamber 11 can be evacuated to reduce the internal air pressure of the drying chamber 11, so as to reduce the boiling point of water, thereby reducing the temperature required for drying the rubber material 10a. After the rubber material 10a is dried, the nitrogen supply module introduces nitrogen into the drying chamber 11, so that the rubber material 10a is cooled in a nitrogen environment, and the rubber material 10a is protected. Through the protection of the drying and cooling process, the aging of the rubber material 10a is effectively avoided, and the performance of the rubber material 10a is guaranteed.

[0040] In one embodiment, after the rubber to be dried is placed in the drying chamber 11, the vertical driving member 33 drives the cover plate 34 to close. Specifically, the automatic sealing of the drying chamber 11 is achieved through this process, which facilitates the drying of the rubber material.

[0041] In one embodiment, in the step of the nitrogen supply module supplying nitrogen to the drying chamber 11, the gas outlet module 50 draws the nitrogen in the drying chamber 11 out of the drying chamber 11 through the gas outlet 15. Specifically, the nitrogen is drawn out from the gas outlet 15 by the gas outlet module 50, so that the nitrogen in the drying chamber 11 is always in a flowing state, the drying chamber 11 is quickly cooled, and the cooling efficiency of the rubber material 10a is guaranteed.

[0042] In order to better understand the present invention, the following Figures 1 to 3 The technical solution of the present invention is described in detail: before drying the rubber material 10a, the vertical driving member 33 drives the cover plate 34 to lift up, so that the cover plate 34 is away from the drying box 10, and then the horizontal driving member 32 drives the connecting frame 31 to move horizontally, driving the cover plate 34 away from the placement port 13, and then the rubber material 10a is packed and placed in the placement groove 41, and then the placement frame 40 is placed from the placement port 13 and set up in the drying box 10. After the placement is completed, the horizontal driving member 32 drives the connecting frame 31 to move horizontally, driving the cover plate 34 to move to the upper side of the placement port 13, and then the vertical driving member 33 drives the cover plate 34 to descend, and the cover plate 34 is covered on the placement port 13 to seal the placement port 13, and then the rubber material 10a is dried; During drying, the vacuum module evacuates the drying chamber 11, and the heating element 22 heats the uniform heating chamber 21 to evenly diffuse the heat to the drying chamber 11, thereby drying the rubber. After drying, the rubber material 10a is cooled; During cooling, the nitrogen supply module supplies nitrogen to the drying chamber 11 to absorb the heat of the drying chamber 11, and the gas outlet module 50 draws the nitrogen out from the gas outlet 15 to quickly cool the drying chamber 11. After cooling is completed, the upper cover is opened and the placement rack 40 can be taken out.

[0043] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A rubber drying device, characterized in that: include: A drying box having a drying chamber therein; A heating module, located in the drying chamber, for supplying heat to the drying chamber; A vacuum module, connected to the drying box, for vacuuming the drying chamber; and A nitrogen supply module is connected to the drying chamber and is used to supply nitrogen to the drying chamber.

2. The rubber drying device according to claim 1, characterized in that: The drying box is provided with an air outlet hole, which is connected to the drying chamber. The rubber drying device also includes an air outlet module, which is installed in the drying box and is used to lead the gas in the drying chamber out of the drying chamber through the air outlet hole.

3. The rubber drying device according to claim 2, characterized in that: The air outlet module includes an induced draft fan and an air outlet box, the air outlet box is connected to the drying chamber through a connecting hole, the air outlet hole is connected to the air outlet box, and is connected to the drying chamber through the air outlet box and the connecting hole, and the induced draft fan extends to the air outlet box to introduce the gas in the drying chamber into the air outlet box.

4. The rubber drying device according to claim 3, characterized in that: The induced draft fan includes an induced draft driving member and an induced draft wheel. The induced draft driving member is installed in the drying box. The induced draft wheel is connected to the induced draft driving member and is located in the air outlet box. The induced draft wheel is provided with a plurality of induced draft blades at intervals along the circumferential direction. The induced draft driving member is used to drive the induced draft wheel to rotate so that the induced draft blades introduce the gas in the drying chamber into the air outlet box.

5. The rubber drying device according to any one of claims 1 to 4, characterized in that: The heating module comprises a uniform heating chamber and a plurality of heating elements. The uniform heating chamber is arranged on both sides of the drying chamber. The heating elements are evenly spaced along the extension direction of the uniform heating chamber and are used to heat the uniform heating chamber.

6. The rubber drying device according to any one of claims 1 to 4, characterized in that: The drying box is provided with a placement opening and slide rails, the slide rails are located on both sides of the placement opening and extend along the length direction of the drying box, the drying box is provided with an upper cover assembly, the upper cover assembly includes a connecting frame, a horizontal driving member, a vertical driving member and a cover plate, the connecting frame is slidably connected to the slide rails, the horizontal driving member connects the drying box and the connecting frame, and is used to drive the connecting frame to slide, the vertical driving member is installed on the connecting frame and connected to the cover plate, and is used to drive the cover plate to cover the placement opening along the height direction of the drying box.

7. The rubber drying device according to any one of claims 1 to 4, characterized in that: The rubber drying device also includes a placing rack, which is located in the drying chamber and detachably mounted on the drying box. The placing rack is provided with a plurality of spaced placing slots, and the placing slots are used to place the rubber material to be dried.

8. A rubber drying method, characterized in that: The method is performed by the rubber drying device according to any one of claims 1 to 7, comprising the following steps: The rubber to be dried is placed in a drying chamber; The vacuum unit vacuums the drying chamber; A heating unit heats the drying chamber to dry the rubber; The nitrogen supply module supplies nitrogen to the drying chamber so that the rubber is cooled in a nitrogen environment.

9. The rubber drying method according to claim 8, characterized in that: After the step of placing the rubber to be dried in the drying chamber, the vertical driving member drives the cover plate to close.

10. The rubber drying method according to claim 8, characterized in that: In the step of supplying nitrogen into the drying chamber by the nitrogen supply module, the gas outlet module guides the nitrogen in the drying chamber out of the drying chamber through the gas outlet hole.

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