Efficient and uniform hot air circulation system for vulcanizing machine

Abstract

The utility model belongs to the technical field of vulcanization equipment, disclose a kind of efficient uniform vulcanizing machine hot air circulation system, including vulcanization jar, heating box, fan and circulating pipeline, fan is connected between vulcanization jar and heating box, and the inner cavity of fan is communicated with vulcanization jar and heating box respectively, heating box is connected with heating pipe inside, the scheme is by setting one-way valve assembly in vulcanization jar air outlet pipe, and cooperate circulating pipeline to introduce the hot air of discharge into heating box and reuse secondary heating, realize the full filling and uniform distribution of hot air in vulcanization jar, effectively avoid airflow short circuit phenomenon;At the same time, circulating pipeline uses heat-insulating material, reduces heat loss, heating pipe can quickly compensate the heat of backflow gas, significantly improve system thermal efficiency;Overall structure design is reasonable, linkage is strong, not only reduce energy consumption, also improve the temperature consistency and processing quality of vulcanized product, satisfy the process demand of modern high-performance rubber and plastic product processing.

Description

Technical Field

[0001] This utility model relates to the field of vulcanization equipment technology, and in particular to a high-efficiency and uniform hot air circulation system for a vulcanizing machine. Background Technology

[0002] Vulcanizing machines, as important equipment for the thermal processing of materials such as rubber products and plastic parts, are widely used in the manufacturing of automotive parts, industrial seals, and footwear materials. Existing vulcanizing machines mainly use electric heating, steam, or heat transfer oil to heat the mold cavity to a predetermined temperature, and combine this with a hot air circulation system to regulate the temperature distribution within the cavity, thereby promoting uniform vulcanization of the products. The hot air circulation system typically consists of a fan, a heating unit, air inlets and outlets, and air ducts. The fan drives the flow of hot air, allowing the heated gas to enter the vulcanizing cavity and then exit through the air outlet, thus maintaining heat transfer and airflow circulation within the cavity.

[0003] However, the existing hot air circulation system of vulcanizing machines generally has the following shortcomings in practical applications: First, the hot air flow path is not designed properly, which can easily lead to airflow short-circuiting, resulting in hot air not being fully filled into the vulcanizing chamber before being discharged directly, causing uneven local temperature distribution in the chamber; Second, the discharged hot air is directly discharged to the outside without being recycled, resulting in low system thermal efficiency and high energy consumption. Utility Model Content

[0004] This invention aims to provide a highly efficient and uniform hot air circulation system for vulcanizing machines to solve the problems mentioned in the background art. This solution, by installing a one-way valve assembly in the outlet pipe of the vulcanizing cylinder and cooperating with the circulation pipe to introduce the discharged hot air into the heating box for secondary heating and reuse, achieves full and uniform distribution of hot air within the vulcanizing cylinder, effectively avoiding airflow short-circuiting. Simultaneously, the circulation pipe uses insulation material to reduce heat loss, and the heating pipe can quickly compensate for the heat of the returning gas, significantly improving the system's thermal efficiency. The overall structural design is reasonable and highly interconnected, not only reducing energy consumption but also improving the temperature consistency and processing quality of vulcanized products, meeting the technological requirements of modern high-performance rubber and plastic product processing.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-efficiency and uniform hot air circulation system for a vulcanizing machine includes a vulcanizing cylinder, a heating box, a fan, and a circulation pipe. The fan is connected between the vulcanizing cylinder and the heating box, and is connected to the inner cavity of both the vulcanizing cylinder and the heating box. A heating pipe is connected inside the heating box. An air outlet pipe is connected to the outer end of the vulcanizing cylinder. A one-way valve assembly is installed inside the air outlet pipe, and a circulation pipe is connected to the outer end of the air outlet pipe. The end of the circulation pipe away from the air outlet pipe is connected to the inner cavity of the heating box.

[0007] Preferably, the one-way valve assembly includes a valve seat, a valve disc, and a bracket, both of which are connected to the inner wall of the air outlet duct, and the valve disc is used in conjunction with the valve seat.

[0008] Preferably, the valve disc is connected to a valve shaft at the end away from the valve seat, the valve shaft is slidably connected to the bracket, and a spring is sleeved on the outer end of the valve shaft.

[0009] Preferably, the valve seat is configured as an annular structure, the valve disc is configured as a disc-shaped structure, the valve disc and the valve seat are coaxially arranged, and the ends of the valve disc and the valve seat that are close to each other are connected with rubber sealing rings.

[0010] Preferably, the end of the heating box away from the fan is connected to an air inlet.

[0011] Preferably, the circulation pipe is made of thermal insulation material.

[0012] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0013] This solution incorporates a one-way valve assembly within the vulcanizing cylinder's outlet duct, along with a circulating pipeline, to guide the discharged hot air into a heating chamber for secondary heating and reuse. This ensures sufficient and uniform distribution of hot air within the vulcanizing cylinder, effectively preventing airflow short-circuiting. Simultaneously, the circulating pipeline utilizes insulation material to reduce heat loss, and the heating element rapidly compensates for the heat of the returning gas, significantly improving system thermal efficiency. The overall structural design is rational and highly interconnected, not only reducing energy consumption but also enhancing the temperature consistency and processing quality of vulcanized products, meeting the technological demands of modern high-performance rubber and plastic product processing. Attached Figure Description

[0014] Figure 1 A front sectional view of the structure provided for this utility model;

[0015] Figure 2 Provided by this utility model Figure 1 Schematic diagram of the structure at point A in the middle.

[0016] Reference numerals in the attached diagram: 1. Vulcanizing cylinder; 2. Heating box; 3. Fan; 4. Air outlet pipe; 5. Heating pipe; 6. Air inlet; 7. Circulation pipe; 8. Valve seat; 9. Valve disc; 10. Support; 11. Valve shaft; 12. Spring. Detailed Implementation

[0017] Vulcanizing machines, as important equipment for the thermal processing of materials such as rubber products and plastic parts, are widely used in the manufacturing of automotive parts, industrial seals, and footwear materials. Existing vulcanizing machines mainly use electric heating, steam, or heat transfer oil to heat the mold cavity to a predetermined temperature, and combine this with a hot air circulation system to regulate the temperature distribution within the cavity, thereby promoting uniform vulcanization of the products. The hot air circulation system typically consists of a fan, a heating unit, air inlets and outlets, and air ducts. The fan drives the flow of hot air, allowing the heated gas to enter the vulcanizing cavity and then exit through the air outlet, thus maintaining heat transfer and airflow circulation within the cavity.

[0018] However, the existing hot air circulation system of vulcanizing machines generally has the following shortcomings in practical applications: First, the hot air flow path is not designed properly, which can easily lead to airflow short-circuiting, resulting in hot air not being fully filled into the vulcanizing chamber before being discharged directly, causing uneven local temperature distribution in the chamber; Second, the discharged hot air is directly discharged to the outside without being recycled, resulting in low system thermal efficiency and high energy consumption.

[0019] In view of the above problems, this utility model provides a vulcanizing machine hot air circulation system with reasonable structure, high circulation efficiency and uniform temperature distribution, so as to optimize the hot air flow path, improve the heat energy utilization rate and improve the vulcanization quality, thereby meeting the process requirements of modern high-performance rubber product processing.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0021] like Figure 1-2 The diagram shows a high-efficiency and uniform hot air circulation system for a vulcanizing machine, comprising a vulcanizing cylinder 1, a heating chamber 2, a blower 3, and a circulation pipe 7. The blower 3 is connected between the vulcanizing cylinder 1 and the heating chamber 2, and is connected to the inner cavities of both the vulcanizing cylinder 1 and the heating chamber 2. A heating pipe 5 is connected inside the heating chamber 2. An air outlet pipe 4 is connected to the outer end of the vulcanizing cylinder 1. A one-way valve assembly is installed inside the air outlet pipe 4, and the outer end of the air outlet pipe 4 is connected to the circulation pipe 7. The end of the circulation pipe 7 away from the air outlet pipe 4 is connected to the inner cavity of the heating chamber 2.

[0022] In this embodiment, the efficient and uniform hot air circulation system of the vulcanizing machine uses a fan 3 to drive hot air to continuously circulate between the vulcanizing cylinder 1 and the heating box 2. The heating pipe 5 performs secondary heating compensation on the return gas to ensure that the gas temperature quickly recovers to the set value. The one-way valve assembly plays a role in air pressure control in the air outlet pipe 4, so that the hot air in the vulcanizing cylinder 1 is filled before being discharged, avoiding airflow short circuit. The circulation pipe 7 introduces the discharged hot air back into the inner cavity of the heating box 2 for heating and reuse, which significantly improves the thermal energy utilization rate and heating efficiency. Through the coordinated work of various structures, the overall system achieves optimized airflow path, enhanced cavity temperature uniformity, and reduced energy consumption, which can effectively solve the problems of local overheating, cold spots, and low energy efficiency in traditional vulcanizing machine hot air circulation systems.

[0023] The vulcanizing cylinder 1 serves as the main working chamber for hot air circulation, ensuring that the products are heated evenly within the enclosed space. The blower 3 provides continuous airflow power, allowing heated air to enter the vulcanizing cylinder 1 through the air inlet, forming a fully covered hot air flow field. The heating tube 5 inside the heating chamber 2 provides rapid heating compensation for the return gas, preventing temperature decay due to multiple cycles. The air outlet 4 serves as the hot air outlet and connects to the circulation pipe 7, ensuring smooth airflow discharge and recycling. This structural design effectively reduces heat loss. Through the linkage of the vulcanizing cylinder 1, heating chamber 2, blower 3, and circulation pipe 7, a closed-loop circulation of hot air is achieved, making the temperature distribution within the chamber more uniform while reducing energy consumption.

[0024] The one-way valve assembly includes a valve seat 8, a valve disc 9, and a bracket 10. Both the valve seat 8 and the bracket 10 are connected to the inner wall of the air outlet duct 4. The valve disc 9 works in conjunction with the valve seat 8. The end of the valve disc 9 away from the valve seat 8 is connected to a valve shaft 11. The valve shaft 11 is slidably connected to the bracket 10, and a spring 12 is sleeved on the outer end of the valve shaft 11. The valve seat 8 is configured as an annular structure, and the valve disc 9 is configured as a disc-shaped structure. The valve disc 9 and the valve seat 8 are coaxially arranged, and rubber sealing rings are connected to the ends of the valve disc 9 and the valve seat 8 that are close to each other.

[0025] In this embodiment, the one-way valve assembly, through the coaxial structure of the valve seat 8 and the valve disc 9 and the airtight design of the sealing ring, enables the valve disc 9 to be pushed open by the airflow when the air pressure inside the vulcanizing cylinder 1 is higher than the external air pressure, allowing hot air to be discharged smoothly; when the air pressure decreases, the spring 12 provides a restoring force, causing the valve disc 9 to quickly fall back to the valve seat 8, thus cutting off the airflow and preventing backflow of external air; this one-way valve assembly has a compact structure and sensitive operation, which can effectively avoid the phenomenon of airflow short circuit, ensure that the hot air is fully filled and evenly distributed in the vulcanizing cylinder 1, and improve the thermal efficiency and temperature consistency of the entire system.

[0026] The heating box 2 is connected to an air inlet 6 at the end away from the fan 3.

[0027] In this embodiment, the air inlet 6 allows outside air to be introduced into the system when necessary to replenish fresh air to adjust the air pressure or temperature inside the cavity, and works in conjunction with the fan 3 and the heating pipe 5 to ensure the continuity of airflow and temperature stability. This structure improves the reliability of the hot air circulation system while increasing the overall operational flexibility.

[0028] The circulation pipe 7 is made of insulation material.

[0029] In this embodiment, the circulating pipe 7 is made of heat-insulating material, which effectively prevents heat loss of hot air during the recirculation process and ensures that the gas temperature is maintained at a high level before reaching the heating box 2, thereby reducing the load on the heating tube 5; the heat insulation structure and the efficient heating linkage of the heating tube 5 further improve the overall thermal efficiency of the system and achieve the beneficial effect of energy saving and consumption reduction.

[0030] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A highly efficient and uniform hot air circulation system for a vulcanizing machine, characterized in that: The device includes a vulcanizing cylinder (1), a heating box (2), a blower (3), and a circulation pipe (7). The blower (3) is connected between the vulcanizing cylinder (1) and the heating box (2), and the blower (3) is connected to the inner cavity of the vulcanizing cylinder (1) and the heating box (2) respectively. A heating pipe (5) is connected inside the heating box (2). An air outlet pipe (4) is connected to the outer end of the vulcanizing cylinder (1). A one-way valve assembly is installed inside the air outlet pipe (4), and a circulation pipe (7) is connected to the outer end of the air outlet pipe (4). The end of the circulation pipe (7) away from the air outlet pipe (4) is connected to the inner cavity of the heating box (2).

2. The efficient and uniform hot air circulation system for a vulcanizing machine as described in claim 1, characterized in that: The one-way valve assembly includes a valve seat (8), a valve disc (9), and a bracket (10). The valve seat (8) and the bracket (10) are both connected to the inner wall of the air outlet pipe (4). The valve disc (9) is used in conjunction with the valve seat (8).

3. The efficient and uniform hot air circulation system for a vulcanizing machine as described in claim 2, characterized in that: The valve disc (9) is connected to a valve shaft (11) at the end away from the valve seat (8). The valve shaft (11) is slidably connected to the bracket (10), and a spring (12) is sleeved on the outer end of the valve shaft (11).

4. The efficient and uniform hot air circulation system for a vulcanizing machine as described in claim 2, characterized in that: The valve seat (8) is configured as an annular structure, and the valve disc (9) is configured as a disc shape. The valve disc (9) and the valve seat (8) are coaxially arranged, and the valve disc (9) and the valve seat (8) are connected to a rubber sealing ring at their respective ends that are close to each other.

5. The efficient and uniform hot air circulation system for a vulcanizing machine as described in claim 1, characterized in that: The heating box (2) is connected to an air inlet (6) at the end away from the fan (3).

6. The efficient and uniform hot air circulation system for a vulcanizing machine as described in claim 1, characterized in that: The circulating pipe (7) is made of thermal insulation material.

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