A counter-rotating parallel gear box heat dissipation shell for a double screw extruder

Abstract

The utility model relates to gear box heat dissipation technical field, concretely relates to a kind of heat dissipation shell of opposite parallel gear box for double-screw extruder, including the shell of opposite parallel gear box, further include: heat dissipation component, the heat dissipation component covers the outside of shell, the heat dissipation component includes the heat conduction plate contact in the outside of shell, the heat conduction plate inside fixedly connected with liquid cooling pipe, the liquid cooling pipe outside fixedly connected with water tank. Through the cooperation of heat dissipation component and fixed component, heat conduction plate is closely attached to shell, and the heat generated by gear box operation is quickly conducted;The bending liquid cooling pipe in it and water tank, water pump constitute circulating liquid cooling system, remove a large amount of heat by the flow of coolant;The plurality of bending heat dissipation fins outside bottom plate increase the heat dissipation area, cooperate with the fin and fan forced air cooling of water tank side, effectively reduce the gear box operating temperature, avoid the problems such as component aging, lubrication failure caused by high temperature, improve the stability of long-term operation of equipment.

Description

Technical Field

[0001] This utility model relates to the field of gearbox heat dissipation technology, specifically to a heat dissipation housing for a twin-screw extruder with an anti-parallel gearbox. Background Technology

[0002] As a core piece of equipment in polymer material processing and plastic modification, the twin-screw extruder's counter-rotating parallel gearbox is a key component for screw drive, responsible for transmitting motor power to the two counter-rotating screws. During high-speed extruder operation, the mechanical motion inside the gearbox, including gear meshing and bearing rotation, generates a large amount of frictional heat. If this heat cannot be dissipated in time, the gearbox's operating temperature will continue to rise.

[0003] High-temperature environments accelerate the oxidation and wear of metal parts such as gears and bearings, reducing their mechanical strength and precision. At the same time, they cause a decrease in lubricating oil viscosity and failure of lubrication performance, exacerbating dry friction between parts and creating a vicious cycle. In severe cases, this may lead to fatal failures such as gear tooth breakage and bearing seizure, directly affecting the operational safety of the extruder.

[0004] Existing gearbox cooling structures mostly employ a single passive cooling method, such as casting heat sinks on the outer shell. Due to structural design limitations, when the twin-screw extruder is running under high load, the heat generated per unit time far exceeds the passive cooling capacity, causing the gearbox temperature to rise rapidly to a critical value, usually exceeding 80°C, necessitating shutdown for cooling, which seriously affects production continuity and efficiency.

[0005] Therefore, it is necessary to invent a heat dissipation housing for a counter-rotating parallel gearbox for a twin-screw extruder to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a heat dissipation housing for a parallel gearbox in a twin-screw extruder. The heat dissipation components, through a heat-conducting plate tightly fitted to the outer shell, rapidly conduct heat. An internally folded liquid cooling pipe, along with a water tank and pump, forms a circulating liquid cooling system that removes a significant amount of heat. The folded heat dissipation fins on the outer side of the base plate increase the heat dissipation area. Combined with the heat dissipation fins on the water tank side and a forced air cooling fan, this creates a multi-layered, synergistic heat dissipation system. This addresses the problem in existing technologies where the gearbox uses a single passive heat dissipation method, resulting in insufficient heat dissipation efficiency. Under high load operation, heat cannot be dissipated in time, and the temperature easily rises above 80°C, requiring shutdown for cooling, thus affecting production continuity and efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a heat dissipation housing for a counter-rotating parallel gearbox in a twin-screw extruder, comprising an outer shell of the counter-rotating parallel gearbox, and further comprising:

[0008] A heat dissipation assembly covers the outer side of the housing. The heat dissipation assembly includes a heat-conducting plate that contacts the outer side of the housing. A liquid cooling pipe is fixedly connected inside the heat-conducting plate. A water tank is fixedly connected to the outer side of the liquid cooling pipe. A mounting base is fixedly connected to the outer side of the water tank. A fan is fixedly connected to the outer side of the mounting base. A water pump that communicates with the inside of the water tank is fixedly connected to the outer side of the water tank.

[0009] A fixing component is disposed on the outside of the housing. The fixing component includes an end positioning member, which covers the outside of the heat dissipation component and the housing. The end positioning member is fixedly connected to the outside of the housing by fastening bolts.

[0010] Preferably, the heat dissipation assembly further includes a base plate, which is fixedly connected to the outside of the heat-conducting plate, and multiple sets of heat dissipation fins are vertically fixedly connected to the outside of the base plate.

[0011] Preferably, the water tank is fixedly connected to the outside of the outer shell by bolts.

[0012] Preferably, the fixing component further includes a gasket, which is fixedly connected to the outside of the end positioning member and is attached to the outside of the base plate and the outer shell.

[0013] Preferably, the left and right sides of the heat dissipation fins are bent, and the liquid cooling pipes are bent.

[0014] Preferably, the water tank has multiple sets of heat sinks fixedly connected to the side near the mounting base.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This invention utilizes a combination of heat dissipation and fixing components. The heat-conducting plate is tightly attached to the outer shell, rapidly transferring the heat generated by the gearbox operation. The internal bent liquid cooling pipes, along with the water tank and water pump, form a circulating liquid cooling system, which removes a large amount of heat through the flow of coolant. Multiple sets of bent heat dissipation fins on the outer side of the base plate increase the heat dissipation area. Combined with the heat dissipation fins on the water tank side and the forced air cooling by the fan, this effectively reduces the gearbox's operating temperature, preventing problems such as component aging and lubrication failure caused by high temperatures, and improving the long-term stability of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural installation diagram of the overall device in this utility model;

[0019] Figure 2 This is a three-dimensional structural breakdown diagram of the overall device in this utility model;

[0020] Figure 3 This is a three-dimensional structural disassembly diagram of the heat dissipation component in this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the heat-conducting plate and liquid cooling pipe in this utility model.

[0022] Legend:

[0023] 1. Outer casing; 2. Heat dissipation components; 21. Heat conduction plate; 22. Base plate; 23. Heat dissipation fins; 24. Liquid cooling pipes; 25. Water tank; 26. Water pump; 27. Mounting bracket; 28. Fan; 3. Fixing components; 31. End positioning parts; 32. Gaskets; 33. Fastening bolts. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1 - Figure 3 The diagram shows a heat dissipation housing for a counter-rotating parallel gearbox in a twin-screw extruder. It includes an outer shell 1 for the counter-rotating parallel gearbox, which serves as the mounting carrier and protective structure for core components such as gears and bearings inside the gearbox. It also includes a heat dissipation assembly 2 and a fixing assembly 3. Specifically:

[0026] The heat dissipation assembly 2 covers the outer side of the outer casing 1. The heat dissipation assembly 2 includes a heat-conducting plate 21, made of copper, that contacts the outer side of the outer casing 1. This plate quickly absorbs and conducts heat from the surface of the outer casing 1. A liquid cooling pipe 24 is fixedly connected inside the heat-conducting plate 21. The liquid cooling pipe 24 is bent to extend the coolant flow path within a limited space, increasing the contact area with the heat-conducting plate 21 and thus more fully absorbing the heat conducted by the heat-conducting plate 21. It communicates with the water tank 25, forming the core channel for liquid cooling circulation. The water tank 25 is fixedly connected to the outer side of the liquid cooling pipe 24. The water tank 25 is bolted to the outer side of the outer casing 1, serving as a coolant storage and heat exchange container, and also providing mounting support for the water pump 26 and the mounting base 27. A mounting base 27 is fixedly connected to the outside of the water tank 25. Multiple heat sinks are fixedly connected to the side of the water tank 25 near the mounting base 27. The main function is to provide a stable mounting position for the fan 28 and ensure the stability of the fan 28 when it is working. The fan 28 is fixedly connected to the outside of the mounting base 27. When it is working, it generates airflow, which directly blows on the heat sink and the surrounding area of ​​the water tank 25, accelerates the airflow, improves the heat dissipation efficiency of the heat sink, and at the same time assists the heat dissipation of the heat sink 23, forming a forced air cooling effect. A water pump 26 connected to the inside of the water tank 25 is fixedly connected to the outside of the water tank 25. It provides power for the circulation of coolant between the liquid cooling pipe 24 and the water tank 25, ensuring the continuous and efficient operation of the liquid cooling system and accelerating heat transfer.

[0027] The fixing component 3 is located on the outside of the housing 1. The fixing component 3 includes an end positioning member 31, which covers the outside of the heat dissipation component 2 and the housing 1. The end positioning member 31 is fixedly connected to the outside of the housing 1 by fastening bolts 33. Its core function is to tightly press the heat dissipation components such as the heat conduction plate 21 and the base plate 22 onto the surface of the housing 1, so as to avoid the increase of the contact gap due to equipment vibration and thus affect the heat conduction efficiency, while enhancing the overall stability of the heat dissipation component 2.

[0028] like Figure 2 - Figure 4As shown, the heat dissipation assembly 2 also includes a base plate 22, which is fixedly connected to the outside of the heat-conducting plate 21. Made of aluminum alloy, the base plate 22 serves as the mounting carrier for the heat dissipation fins 23, transferring some of the heat conducted by the heat-conducting plate 21 to the heat dissipation fins 23. It also enhances the overall structural strength of the heat dissipation assembly 2. Multiple sets of heat dissipation fins 23 are vertically fixedly connected to the outside of the base plate 22. The left and right sides of the heat dissipation fins 23 are bent, significantly increasing the contact area with air within the same space. This allows the heat transferred by the base plate 22 to be quickly dissipated into the environment through air convection, enhancing the passive heat dissipation effect. The fixing assembly 3 also includes a gasket 32, which is fixedly connected to the outside of the end positioning member 31. The gasket 32 ​​fits against the outside of the base plate 22 and the outer shell 1, compensating for the assembly gap between the components through its elasticity, enhancing the clamping effect of the end positioning member 31, ensuring a tight fit between the heat dissipation component and the outer shell 1; and buffering the impact of vibration on the heat dissipation assembly 2 and the outer shell 1, reducing component wear.

[0029] The working principle of this utility model is as follows: When the gearbox is running, the heat generated by friction in the internal gears, bearings, and other components is transferred to the outer casing 1. The heat dissipation assembly 2 and the fixing assembly 3 work together to achieve efficient heat dissipation. First, the heat-conducting plate 21, which is tightly attached to the outer casing 1, quickly absorbs the surface heat and diffuses it evenly. Part of the heat is transferred to the outer base plate 22 through the heat-conducting plate 21. Then, the multiple sets of bent heat dissipation fins 23 on the base plate 22 utilize the increased contact area to dissipate the heat into the environment through air convection. Another part of the heat is absorbed by the bent liquid cooling pipe 24 inside the heat-conducting plate 21. Driven by the water pump 26, the coolant in the liquid cooling pipe 24 carries the heat and circulates to the water tank 25. The heat sink on the side of the water tank 25 near the mounting base 27, together with the forced airflow generated by the fan 28, quickly dissipates the heat in the coolant. The cooled coolant then flows back into the liquid cooling pipe 24 to complete the circulation.

[0030] Meanwhile, the fixing component 3 uses fastening bolts 33 to tightly press the end positioning piece 31 onto the outside of the heat dissipation component 2 and the outer shell 1. The gasket 32 ​​on the inner side of the end positioning piece 31 elastically compensates for the assembly gap, ensuring that components such as the heat conduction plate 21 and the base plate 22 are always in close contact with the outer shell 1, avoiding a decrease in heat conduction efficiency due to vibration. Through multiple coordinated heat dissipation methods and the stable support of the fixing component 3, the operating temperature of the gearbox is continuously reduced, ensuring stable operation of the equipment.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A heat dissipation housing for a counter-rotating parallel gearbox in a twin-screw extruder, comprising an outer shell (1) of the counter-rotating parallel gearbox, characterized in that, Also includes: Heat dissipation assembly (2), which covers the outside of the outer shell (1), includes a heat-conducting plate (21) in contact with the outside of the outer shell (1), a liquid cooling pipe (24) is fixedly connected inside the heat-conducting plate (21), a water tank (25) is fixedly connected outside the liquid cooling pipe (24), a mounting base (27) is fixedly connected outside the water tank (25), a fan (28) is fixedly connected outside the mounting base (27), and a water pump (26) communicating with the inside of the water tank (25) is fixedly connected outside the water tank (25). The fixing component (3) is disposed on the outside of the housing (1). The fixing component (3) includes an end positioning member (31). The end positioning member (31) covers the outside of the heat dissipation component (2) and the housing (1). The end positioning member (31) is fixedly connected to the outside of the housing (1) by fastening bolts (33).

2. The heat dissipation housing for a counter-rotating parallel gearbox of a twin-screw extruder according to claim 1, characterized in that: The heat dissipation assembly (2) also includes a base plate (22), which is fixedly connected to the outside of the heat-conducting plate (21), and a number of heat dissipation fins (23) are vertically fixedly connected to the outside of the base plate (22).

3. The heat dissipation housing for a counter-rotating parallel gearbox of a twin-screw extruder according to claim 1, characterized in that: The water tank (25) is fixedly connected to the outside of the outer shell (1) by bolts.

4. The heat dissipation housing for a counter-rotating parallel gearbox of a twin-screw extruder according to claim 1, characterized in that: The fixing component (3) also includes a gasket (32), which is fixedly connected to the outside of the end positioning member (31) and is attached to the outside of the base plate (22) and the outer shell (1).

5. The heat dissipation housing for a counter-rotating parallel gearbox of a twin-screw extruder according to claim 2, characterized in that: The heat dissipation fins (23) are bent on both sides, and the liquid cooling pipe (24) is bent.

6. The heat dissipation housing for a counter-rotating parallel gearbox of a twin-screw extruder according to claim 1, characterized in that: The water tank (25) has multiple sets of heat sinks fixedly connected to the side of the mounting base (27).

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