PVC film coloring device
By designing a total heat exchanger and a serpentine heating tube, the problems of high energy consumption and uneven pigment distribution in PVC film coloring processing equipment have been solved, achieving energy saving, consumption reduction, and uniform coloring effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI XIANGLONG POLYMER FABRIC CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-19
AI Technical Summary
Existing PVC film coloring processing equipment has high energy consumption and high cost during the hot air drying process, and the pigment coloring is uneven.
A total heat exchanger is used to recover the moisture in the hot air drying box and exchange heat with the fresh air. A serpentine heating tube is used to increase the temperature of the pigment to achieve uniform coloring and reduce energy consumption.
By utilizing the heat recovery of the total heat exchanger and the design of the serpentine heating tube, energy consumption is reduced and the temperature uniformity of the pigment is improved, thereby lowering costs.
Smart Images

Figure CN224375156U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PVC film processing technology, specifically to a PVC film coloring processing device. Background Technology
[0002] A film coloring processing device is a specialized piece of equipment used for coloring PVC film. Its core function is to evenly and stably adhere pigments to the surface of the PVC film to meet the needs of decorative, signage, and other applications. After coloring, the film coloring processing device typically requires hot air drying and curing, followed by the removal of high-temperature moisture. This process is not energy-efficient, is costly, and has certain shortcomings. Therefore, we propose a PVC film coloring processing device. Utility Model Content
[0003] The present invention aims to solve the problems existing in the prior art or related technologies.
[0004] Therefore, the technical solution adopted by this utility model is as follows: a PVC film coloring processing device, including a processing table, a pigment box, a preheating box, a hot air drying box, a total heat exchanger, a fresh air supply pipe, and a heating pipe. The pigment box is located at the top of the processing table, the preheating box is located at the top of the processing table, the preheating box is provided with a preheating pipe and a first dehumidification pipe, and the preheating pipe is provided with a first valve. The hot air drying box is located at the top of the processing table, the hot air drying box is provided with a hot air pipe and a second dehumidification pipe, the total heat exchanger is fixedly connected to the second dehumidification pipe, the fresh air supply pipe is located behind the total heat exchanger, the fresh air supply pipe is provided with a second valve, and the heating pipe is located inside the pigment box.
[0005] Preferably, the pigment box has an inner bearing connected to a coloring roller, the front end of the pigment box is provided with an injection pipe, and the inner side of the pigment box is provided with an outlet hole.
[0006] Preferably, the top of both the hot air drying box and the preheating box are hinged to a top plate, and the top plate is provided with a handle.
[0007] Preferably, the left side of the hot air duct is fixedly connected to the hot air blower.
[0008] Preferably, the bottom of the total heat exchanger is provided with a support platform, and the front end of the total heat exchanger is provided with a fresh air inlet and an outlet.
[0009] Preferably, the fresh air delivery pipe is fixedly connected to the preheating pipe and the heating pipe, and the fresh air delivery pipe and the heating pipe have the same diameter.
[0010] Preferably, the heating tube is provided with a discharge pipe, and the heating tube is serpentine.
[0011] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: The total heat exchanger set in this utility model can draw in the moisture in the hot air drying box through the second exhaust pipe, so that it can exchange heat with the fresh air. Then, the fresh air after heat exchange can enter the preheating box through the fresh air delivery pipe and the preheating pipe to recover waste heat for preheating. The energy consumption is low, which greatly reduces the cost. At the same time, the heating pipe can deliver the fresh air after heat exchange. Since the heating pipe is serpentine, it can improve the problem of pigment in the pigment box through heat transfer, so as to achieve uniform coloring. Attached Figure Description
[0012] Figure 1 This is a structural schematic diagram of the present invention from one perspective;
[0013] Figure 2 This is a structural schematic diagram from another perspective of the present invention;
[0014] Figure 3 This utility model Figure 1 A schematic diagram of the structure of the pigment box and heating tube.
[0015] Figure label:
[0016] 100. Processing table;
[0017] 200. Pigment box; 201. Coloring roller; 202. Injection tube; 203. Outlet;
[0018] 300. Preheating box; 301. Preheating pipe; 302. First valve; 303. First exhaust pipe;
[0019] 400. Hot air drying oven; 401. Hot air duct; 402. Second exhaust duct; 403. Top plate; 404. Handle;
[0020] 500. Total heat exchanger; 501. Support platform; 502. Fresh air inlet; 503. Outlet;
[0021] 600. Fresh air supply pipe; 601. Second valve;
[0022] 700, heating element; 701, discharge pipe. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0024] The following describes some embodiments of the present invention with reference to the accompanying drawings, providing a PVC film coloring processing device.
[0025] Example 1:
[0026] Reference Figure 1-3 This is the first embodiment of the present invention. This embodiment provides a PVC film coloring processing device, including a processing table 100, a pigment box 200, a preheating box 300, a hot air drying box 400, a total heat exchanger 500, a fresh air supply pipe 600, and a heating pipe 700.
[0027] Specifically, the pigment box 200 is located at the top of the processing table 100. The inner bearing of the pigment box 200 is connected to the coloring roller 201. The front end of the pigment box 200 is provided with an injection pipe 202, and the inner side of the pigment box 200 is provided with an outlet hole 203. In use, pigment can be injected into the pigment box 200 through the injection pipe 202. Then, a certain amount of pigment can be stored in the pigment box 200. The bottom of the coloring roller 201 can be immersed in pigment so that it can be colored when rotating. Afterwards, the pigment box 200 can be drained through the outlet hole 203 to clean it.
[0028] Specifically, the preheating box 300 is installed at the top of the processing table 100. The preheating box 300 is equipped with a preheating pipe 301 and a first dehumidification pipe 303. The preheating pipe 301 is equipped with a first valve 302. In use, the preheating pipe 301 can deliver fresh air after heat exchange to the preheating box 300 to preheat the PVC film, while the first dehumidification pipe 303 can discharge the preheated moisture for use.
[0029] Specifically, the hot air drying oven 400 is installed at the top of the processing table 100. The hot air drying oven 400 is equipped with a hot air pipe 401 and a second dehumidification pipe 402. The left side of the hot air pipe 401 is fixedly connected to the hot air blower. The top of both the hot air drying oven 400 and the preheating box 300 are hinged to a top plate 403, and a handle 404 is installed on the top plate 403. In use, the hot air generated by the hot air blower can be delivered to the hot air drying oven 400 through the hot air pipe 401 to dry the PVC film, while the moisture can be discharged through the second dehumidification pipe 402. The top plate 403 can seal the hot air drying oven 400 and the preheating box 300, while also facilitating the opening of the hot air drying oven 400 and the preheating box 300 for maintenance.
[0030] Specifically, the total heat exchanger 500 is fixedly connected to the second exhaust pipe 402. The bottom of the total heat exchanger 500 is provided with a support platform 501, and the front end of the total heat exchanger 500 is provided with a fresh air inlet 502 and an outlet 503. In use, the moisture in the hot air drying box 400 can be transported to the total heat exchanger 500 through the second exhaust pipe 402, while the fresh air inlet 502 facilitates the entry of fresh air into the total heat exchanger 500 for heat exchange. Then, the exchanged moisture can be discharged through the outlet 503.
[0031] Specifically, the fresh air supply pipe 600 is installed behind the total heat exchanger 500. A second valve 601 is installed on the fresh air supply pipe 600. The fresh air supply pipe 600 is fixedly connected to the preheating pipe 301 and the heating pipe 700. The fresh air supply pipe 600 and the heating pipe 700 have the same diameter. In use, the second valve 601 can be rotated to open the fresh air supply pipe 601 to supply fresh air into the heating pipe 700 in order to increase the temperature of the pigment. Fresh air can also be supplied to the preheating pipe 301 through the fresh air supply pipe 600 for preheating.
[0032] Specifically, the heating tube 700 is installed inside the pigment box 200, and the heating tube 700 is equipped with an exhaust pipe 701. The heating tube 700 is serpentine. During use, fresh air for heat exchange can be delivered through the heating tube 700, and the temperature of the pigment can be increased by utilizing the heat transfer property, so as to achieve uniform coloring.
[0033] The working principle and usage process of this utility model are as follows: First, the hot air pipe 401 delivers hot air to the hot air drying chamber 400 to dry the PVC film. After drying, the high-temperature moisture is delivered to the total heat exchanger 500 through the second exhaust pipe 402. Then, fresh air enters the total heat exchanger 500 through the fresh air inlet 502, where it undergoes heat exchange. Next, the second valve 601 is closed and the first valve 302 is opened. After heat exchange, the fresh air enters the preheating chamber 300 through the fresh air delivery pipe 600 and the preheating pipe 301 for preheating. Afterward, the first valve 302 is closed and the second valve 601 is opened. After heat exchange, the fresh air enters the heating pipe 700 through the fresh air delivery pipe 600, thereby increasing the temperature of the pigment in the pigment box 200.
[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A PVC film coloring processing apparatus characterized by, include: Processing table (100); A pigment box (200) is disposed on the top of the processing table (100); A preheating box (300) is installed at the top of the processing table (100). A preheating pipe (301) and a first exhaust pipe (303) are installed on the preheating box (300). A first valve (302) is installed on the preheating pipe (301). A hot air drying oven (400) is installed on the top of the processing table (100), and a hot air pipe (401) and a second dehumidification pipe (402) are installed on the hot air drying oven (400). A total heat exchanger (500) is fixedly connected to the second exhaust pipe (402); A fresh air supply pipe (600) is installed on the rear side of the total heat exchanger (500), and a second valve (601) is installed on the fresh air supply pipe (600). Heating tubes (700) are arranged inside the pigment box (200).
2. The PVC film coloring processing device according to claim 1, characterized in that, The pigment box (200) has an inner bearing connected to a coloring roller (201), a filling pipe (202) is provided at the front end of the pigment box (200), and an outlet hole (203) is provided on the inner side of the pigment box (200).
3. The PVC film coloring processing device according to claim 1, characterized in that, The top of both the hot air drying oven (400) and the preheating box (300) are hinged to a top plate (403), and a handle (404) is provided on the top plate (403).
4. The PVC film coloring processing device according to claim 1, characterized in that, The left side of the hot air duct (401) is fixedly connected to the hot air blower.
5. The PVC film coloring processing device according to claim 1, characterized in that, The bottom of the total heat exchanger (500) is provided with a support platform (501), and the front end of the total heat exchanger (500) is provided with a fresh air inlet (502) and an outlet (503).
6. The PVC film coloring processing device according to claim 1, characterized in that, The fresh air delivery pipe (600) is fixedly connected to the preheating pipe (301) and the heating pipe (700), and the fresh air delivery pipe (600) and the heating pipe (700) have the same pipe diameter.
7. The PVC film coloring processing device according to claim 1, characterized in that, The heating tube (700) is provided with a discharge pipe (701), and the heating tube (700) is serpentine.