Vertical combustion testing device

Abstract

The utility model provides a vertical combustion testing device, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The vertical combustion testing device comprises a cylindrical barrel with a cavity inside, and further comprises a support, preheating assemblies and a circulation assembly, the support is fixedly connected to the side portion in the barrel, and the preheating assemblies are fixedly connected to the support and evenly distributed on the inner wall of the barrel in the circumferential direction; the preheating assemblies which are evenly distributed in the circumferential direction form a treatment cavity used for containing a workpiece to be subjected to combustion treatment, the upper end of the barrel is open, and the circulation assembly is connected to the opening in the upper end of the barrel and right faces the treatment cavity. The vertical combustion testing device is high in stability.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a vertical combustion testing device. Background Technology

[0002] Flame retardancy refers to a material's ability to suppress combustion, slow the spread of flames, or self-extinguish when in contact with a fire source. It is an important indicator for measuring the fire safety of materials.

[0003] Among flame retardant standards, UL 94 is a commonly used standard for testing the flammability of materials. Developed by the U.S. safety laboratory (UL), it applies not only to the conventional electronics and electrical appliance industries but also to many other fields, such as new energy vehicles, aircraft, military equipment, aviation, medical equipment, smart homes, and IoT devices. Many material flame retardant performance tests also adopt the UL 94 standard. The UL 94 standard evaluates the flame retardant rating of materials by testing their vertical and horizontal burning performance, thereby ensuring the safety of materials in the event of a fire.

[0004] Pre-treatment of the sample is required before conducting combustion tests, namely:

[0005] The sample was placed in an environment with a temperature of 23±2°C and a relative humidity of 50±5% for at least 48 hours to ensure consistent test conditions.

[0006] In current testing procedures, samples are typically placed in a relatively small temperature control chamber. While this allows for sample pretreatment, the limited space in the chamber results in low testing efficiency. Summary of the Invention

[0007] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a vertical combustion testing device with high processing efficiency and a compact structure.

[0008] The objective of this utility model can be achieved through the following technical solutions:

[0009] A vertical combustion testing device includes a cylindrical body with an internal cavity, characterized in that it further includes a support, a preheating component, and a flow component. The support is fixed to the side of the body of the cylinder, the preheating component is fixed to the support and is circumferentially distributed on the inner wall of the cylinder, and the circumferentially distributed preheating components form a processing cavity for placing the workpiece to be burned. The upper end of the cylinder is open, and the flow component is connected to the upper end opening of the cylinder and is directly opposite the processing cavity.

[0010] In the aforementioned vertical combustion test device, the support includes several connecting rods and positioning rings. The connecting rods are vertically arranged and there are several connecting rods. The connecting rods are evenly distributed circumferentially inside the cylinder. The outer side of the positioning rings is fixed to the connecting rods. There are several positioning rings, and the positioning rings are evenly distributed up and down along the axial direction of the cylinder.

[0011] In the aforementioned vertical combustion test device, the preheating component includes a preheating pipe and support wheels. Several support wheels are evenly distributed along the circumference of the positioning ring. The preheating pipe includes a preheating section and a connecting section. The preheating section is straight and there are several of them. The preheating sections are arranged in parallel adjacent to each other. The connecting section is arc-shaped. The ends of two adjacent preheating sections are connected and connected through the connecting section. The connecting section is fastened to the corresponding support wheel.

[0012] In the aforementioned vertical combustion test device, two adjacent positioning rings and their corresponding preheating pipes form a preheating unit. There are several preheating units, which are evenly distributed from top to bottom.

[0013] In the aforementioned vertical combustion test device, the support wheel is hinged to the inner side of the positioning ring by a pin, and the edge of the support wheel has an annular recessed positioning groove. The aforementioned connecting section is embedded in the positioning groove of the corresponding support wheel and the two are in surface contact.

[0014] In the above-mentioned vertical combustion test device, an end cap is detachably connected to the upper port of the cylinder, and it also includes a drive component one, a swing arm and a drive component two. The drive component one is fixed to the outside of the cylinder and is connected to the drive component two. The drive component one can drive the drive component two to swing horizontally. The drive component two is connected to the inner end of the swing arm and can drive the swing arm to move up and down. The end cap is connected to the outer end of the swing arm.

[0015] In the aforementioned vertical combustion test device, the flow assembly includes a third drive component, a transmission shaft, and an impeller. The third drive component is fixedly connected to the outer end of the swing arm, the upper end of the transmission shaft is connected to the third drive component, and the lower end of the transmission shaft is fixedly connected to the impeller.

[0016] In the aforementioned vertical combustion test device, the lower part of the end cap has a recessed clearance cavity, and the impeller is located within the clearance cavity.

[0017] In the aforementioned vertical combustion test device, the outer end of the swing arm is fixedly connected to several support plates along its vertical direction, and the aforementioned drive shaft passes through all the support plates and has a bearing between the drive shaft and the support plates.

[0018] Compared with existing technologies, this vertical combustion test device can maintain a constant set temperature and relative humidity inside the cylinder due to the action of the preheating component and the flow component. Therefore, a large number of samples can be placed in the cylinder at the set temperature and relative humidity for a long time, ensuring consistent subsequent test conditions and effectively improving test accuracy.

[0019] Meanwhile, the flow components are set on the end cap, making reasonable use of the end cap space and avoiding it from occupying extra space, effectively improving its structural compactness and giving it high practical value. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the front of this vertical combustion testing device.

[0021] Figure 2 This is a three-dimensional structural diagram of the back of this vertical combustion test device.

[0022] Figure 3 yes Figure 1 A schematic diagram of the partial structure at part A in the middle.

[0023] In the diagram, 1. Cylinder; 2. Connecting rod; 3. Positioning ring; 4. Preheating pipe; 4a. Preheating section; 4b. Connecting section; 5. Support wheel; 5a. Positioning groove; 6. End cover; 6a. Clearance cavity; 7. Drive component one; 8. Swing arm; 9. Drive component two; 10. Drive component three; 11. Transmission shaft; 12. Impeller; 13. Support plate; 14. Bearing. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] like Figure 1 and Figure 2 and Figure 3 As shown, this vertical combustion testing device includes a cylindrical body 1 with an internal cavity, a support, a preheating component, and a flow component. The support is fixed to the side of the cylindrical body 1. The preheating component is fixed to the support and is evenly distributed circumferentially on the inner wall of the cylindrical body 1. The evenly distributed preheating components form a processing cavity for placing the workpiece to be burned. The upper end of the cylindrical body 1 is open. The flow component is connected to the upper end opening of the cylindrical body 1 and is directly opposite the processing cavity.

[0028] This vertical combustion test apparatus is not used for the entire testing process of the sample; it is only used for sample pretreatment. Specifically, the sample is placed in an environment with a temperature of 23±2°C and a relative humidity of 50±5% for at least 48 hours to ensure consistent testing conditions.

[0029] While ordinary constant temperature chambers can also achieve the above pretreatment, their limited space allows for the placement of only a small number of samples. However, the internal space of the cylinder 1 in this patent application is relatively large, enabling the pretreatment of a large number of samples at once.

[0030] Specifically, since the preheating component is located inside the cylinder 1, the active heating effect of the preheating component can maintain the set temperature inside the cylinder 1. At the same time, the air circulation component can ensure that the air flows fully inside the cylinder 1, ensuring that the temperature is consistent throughout the cylinder 1. In addition, the air circulation can also ensure that the relative humidity inside the cylinder 1 is constant.

[0031] Of course, during the active heating process of the preheating component, the temperature actively increased by the preheating component itself is calculated by comparing the temperature of the preheating component with the temperature inside the cylinder. The above calculation process is existing technology, so it will not be described again in this embodiment.

[0032] The support includes several connecting rods 2 and positioning rings 3. The connecting rods 2 are vertically arranged and there are several connecting rods 2. The connecting rods 2 are evenly distributed around the cylinder 1. The outer side of the positioning rings 3 is fixed to the connecting rods 2. There are several positioning rings 3. The positioning rings 3 are evenly distributed up and down along the axial direction of the cylinder 1.

[0033] Since the connecting rods 2 are evenly distributed around the outside of the positioning ring 3, several connecting rods 2 and the positioning ring 3 connected to them can form a compact and stable support structure.

[0034] The preheating assembly includes a preheating pipe 4 and support wheels 5. Several support wheels 5 are evenly distributed along the circumference of the positioning ring 3. The preheating pipe 4 includes a preheating section 4a and a connecting section 4b. The preheating section 4a is a straight pipe and there are several of them. The preheating sections 4a are arranged in parallel adjacent to each other. The connecting section 4b is arc-shaped. The ends of two adjacent preheating sections 4a are connected and connected through the connecting section 4b. The connecting section 4b is fastened to the corresponding support wheel 5.

[0035] The preheating pipe 4 is connected to the support wheel 5 of the positioning ring 3, which finally stably connects the preheating pipe 4 to the bracket.

[0036] Meanwhile, the connecting section 4b is connected to the corresponding support wheel 5, which ensures that the preheating pipe 4 is stably located inside the cylinder 1, and ultimately ensures that the temperature inside the cylinder 1 can be stably raised to the set temperature.

[0037] Two adjacent positioning rings 3 and their corresponding preheating pipes 4 form a preheating unit. There are several preheating units, which are evenly distributed from top to bottom.

[0038] Because the internal space of cylinder 1 is relatively large, multiple preheating units can stably increase the temperature at various points inside cylinder 1.

[0039] The support wheel 5 is hinged to the inner side of the positioning ring 3 by a pin. The edge of the support wheel 5 has an annular recessed positioning groove 5a. The connecting segment 4b is embedded in the positioning groove 5a of the corresponding support wheel 5 and the two are in surface contact.

[0040] The positioning groove 5a and the connecting section 4b work together to ensure that the preheating pipe 4 is stably connected to the bracket.

[0041] The cylinder 1 is detachably connected to an end cap 6 at its upper port. It also includes a first drive component 7, a swing arm 8, and a second drive component 9. The first drive component 7 is fixed to the outside of the cylinder 1 and is connected to the second drive component 9. The first drive component 7 can drive the second drive component 9 to swing horizontally. The second drive component 9 is connected to the inner end of the swing arm 8 and can drive the swing arm 8 to move up and down. The end cap 6 is connected to the outer end of the swing arm 8.

[0042] Driven by drive component 7 and drive component 9, the swing arm 8 can swing and move up and down.

[0043] After the end cap 6 is fastened to the upper port of the cylinder 1, it can ensure the stability of the pretreatment and avoid the influence of external temperature and relative humidity on the inside of the cylinder 1.

[0044] The circulation assembly includes a drive component 3 10, a transmission shaft 11, and an impeller 12. The drive component 3 10 is fixedly connected to the outer end of the swing arm 8. The upper end of the transmission shaft 11 is connected to the drive component 3 10, and the lower end of the transmission shaft 11 is fixedly connected to the impeller 12.

[0045] The driving component 3 10 is a motor. When the driving component 3 10 drives the impeller 12 to rotate continuously through the transmission shaft 11, it can make the air inside the cylinder 1 circulate.

[0046] This serves two purposes:

[0047] Firstly, ensure that the temperature is constant throughout the cylinder 1;

[0048] Secondly, ensure that the relative humidity is constant throughout the cylinder 1.

[0049] The lower part of the end cover 6 has a recessed clearance cavity 6a, and the impeller 12 is located in the clearance cavity 6a.

[0050] This structure prevents the impeller 12 from extending into the cylinder 1 and prevents the sample inside the cylinder 1 from contacting the impeller 12.

[0051] The outer end of the swing arm 8 is fixedly connected to several support plates 13 along its vertical direction. The aforementioned transmission shaft 11 passes through all the support plates 13 and there is a bearing 14 between the transmission shaft 11 and the support plates 13.

[0052] Multiple support plates 13 and corresponding bearings 14 enable the drive shaft 11 to rotate smoothly and stably.

[0053] This vertical combustion test apparatus maintains a constant set temperature and relative humidity inside the cylinder thanks to the preheating and circulation components. As a result, a large number of samples can be placed in the cylinder at the set temperature and relative humidity for an extended period of time, ensuring consistent subsequent test conditions and effectively improving test accuracy.

[0054] Meanwhile, the flow components are set on the end cap, making reasonable use of the end cap space and avoiding it from occupying extra space, effectively improving its structural compactness and giving it high practical value.

[0055] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A vertical combustion testing device, comprising a cylindrical body with an internal cavity, characterized in that, It also includes a support, a preheating component and a flow component. The support is fixed to the side of the cylinder. The preheating component is fixed to the support and is evenly distributed circumferentially on the inner wall of the cylinder. The evenly distributed preheating components form a processing cavity for placing the workpiece to be burned. The upper end of the cylinder is open. The flow component is connected to the upper end opening of the cylinder and is directly opposite the processing cavity.

2. The vertical combustion testing device according to claim 1, characterized in that, The support includes several connecting rods and positioning rings. The connecting rods are vertically arranged and there are several connecting rods. The connecting rods are evenly distributed around the cylinder. The outer side of the positioning rings is fixed to the connecting rods. There are several positioning rings, which are evenly distributed up and down along the axial direction of the cylinder.

3. The vertical combustion testing device according to claim 2, characterized in that, The preheating component includes a preheating pipe and support wheels. Several support wheels are evenly distributed along the circumference of the positioning ring. The preheating pipe includes a preheating section and a connecting section. The preheating section is straight and there are several of them. The preheating sections are arranged in parallel and adjacent to each other. The connecting section is arc-shaped. The ends of two adjacent preheating sections are connected and connected through the connecting section. The connecting section is fastened to the corresponding support wheel.

4. The vertical combustion testing device according to claim 3, characterized in that, Two adjacent positioning rings and their corresponding preheating pipes form a preheating unit. There are several preheating units, which are evenly distributed from top to bottom.

5. The vertical combustion testing device according to claim 4, characterized in that, The support wheel is hinged to the inner side of the positioning ring by a pin. The edge of the support wheel has an annular recessed positioning groove. The connecting section is embedded in the positioning groove of the corresponding support wheel and the two are in surface contact.

6. The vertical combustion testing device according to claim 5, characterized in that, The cylinder is detachably connected to an end cap at its upper port. It also includes a first drive component, a swing arm, and a second drive component. The first drive component is fixed to the outside of the cylinder and is connected to the second drive component. The first drive component can drive the second drive component to swing horizontally. The second drive component is connected to the inner end of the swing arm and can drive the swing arm to move up and down. The end cap is connected to the outer end of the swing arm.

7. The vertical combustion testing device according to claim 6, characterized in that, The circulation component includes a third drive component, a transmission shaft, and an impeller. The third drive component is fixedly connected to the outer end of the swing arm. The upper end of the transmission shaft is connected to the third drive component, and the lower end of the transmission shaft is fixedly connected to the impeller.

8. The vertical combustion testing device according to claim 7, characterized in that, The lower part of the end cap has a recessed clearance cavity, and the impeller is located in the clearance cavity.

9. The vertical combustion testing device according to claim 8, characterized in that, The outer end of the swing arm is fixedly connected to several support plates along its vertical direction, and the aforementioned drive shaft passes through all the support plates and has a bearing between the drive shaft and the support plates.

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