A combustion chamber

Abstract

This application relates to the field of materials testing technology, and in particular to a combustion chamber, comprising a chamber body, a sample holder slidably connected to the inner wall of the chamber for sample clamping, and a collection tray slidably connected to the inner wall of the chamber and located below the sample holder. The side wall of the chamber body has a material extraction port for the collection tray to slide in and out. The collection tray includes a base plate and side rails fixedly connected to the periphery of the base plate. The base plate has a heating chamber, and a heating element is installed within the heating chamber. When it is necessary to clean the dripping residue in the collection tray, the collection tray is slid out, and the heating element in the heating chamber heats the collection tray, thereby softening the dripping material and reducing its adhesion strength, thus facilitating the cleaning of the dripping residue.

Description

Technical Field

[0001] This application relates to the field of materials testing technology, and in particular to a combustion chamber. Background Technology

[0002] In materials science and engineering, combustion chambers are important tools for evaluating the combustion performance of materials and are widely used in scientific research, teaching, and industrial production. In existing combustion chambers, especially for thermoplastics, significant molten dripping occurs during combustion testing. The drips fall into the inner cavity of the collection tray, cool, and adhere to the inner wall of the tray, making subsequent cleaning very difficult. Therefore, further improvements are needed. Utility Model Content

[0003] To facilitate the cleaning of dripping residue in the collection tray, this application provides a combustion chamber.

[0004] The combustion chamber provided in this application adopts the following technical solution:

[0005] A combustion chamber includes a chamber body, a sample holder slidably connected to the inner wall of the chamber body for sample clamping, and a collection tray slidably connected to the inner wall of the chamber body and located below the sample holder. The side wall of the chamber body has a material extraction port for the collection tray to slide in and out. The collection tray includes a bottom plate and side baffles fixedly connected to the periphery of the bottom plate. The bottom plate has a heating cavity and a heating element built into the heating cavity.

[0006] By adopting the above technical solution, when it is necessary to clean the drip residue in the collection tray, the collection tray is slid out and heated by the heating element set in the heating chamber, thereby softening the drip and reducing the adhesion strength of the drip, so as to facilitate the cleaning of the drip residue.

[0007] Preferably, the heating element is an electric heating rod built into the heating cavity.

[0008] By adopting the above technical solution, the bottom plate is heated by an electric heating rod to melt or soften the dripping residue in the collection tray, making it easier to clean.

[0009] Preferably, multiple heating rods are provided and spaced apart in the heating chamber.

[0010] By adopting the above technical solution, multiple spaced heating rods can more evenly transfer heat from the heating chamber to the base plate, allowing the dripping residue in the collection tray to be heated quickly, thus facilitating the cleaning of the dripping residue from the collection tray.

[0011] Preferably, the inner walls of the opposite sides of the housing are fixedly connected to lower guide rails, and the lower side wall of the side block is fixedly connected to a lower slider that slides on the lower guide rails.

[0012] By adopting the above technical solution, the collection tray can be slidable within the box, making it convenient for the collection tray to slide in and out of the box through the material extraction port, and facilitating the cleaning of dripping residue in the collection tray.

[0013] Preferably, a protective baffle is fixedly connected to the upper outer wall of the side block, the protective baffle is located above the lower slider, and the outer wall of the protective baffle abuts against the inner wall of the box.

[0014] By adopting the above technical solution, the protective baffle can prevent dust / dripping and other debris from falling from above the side baffle of the collection tray into the gap between the collection tray and the box, thus affecting the normal sliding of the collection tray and ensuring that the collection tray can smoothly enter and exit the box through the collection port.

[0015] Preferably, the protective baffle is inclined, with the free end of the protective baffle higher than the fixed end of the protective baffle.

[0016] By adopting the above technical solution, the inclined protective baffle can make the dripping material flow back into the collection tray along the baffle.

[0017] Preferably, the sample holder includes a U-shaped frame, a rotating seat rotatably connected to the U-shaped frame, a first U-shaped clamp fixedly connected to the rotating seat, and a second U-shaped clamp slidably connected to the rotating seat in a direction closer to or further away from the first U-shaped clamp. The U-shaped frame includes a pair of supporting horizontal bars slidably connected to the inner walls of both sides of the box body and a supporting vertical bar fixedly connected between one end of the two supporting horizontal bars. The rotating seat is fixedly connected to a rotating shaft rotatably connected to the supporting vertical bar. The supporting vertical bar is provided with a rotating component that drives the rotating shaft to rotate around its own axis. The first U-shaped clamp and the second U-shaped clamp are located between the two supporting horizontal bars, and the first U-shaped clamp and the second U-shaped clamp clamp the sample.

[0018] By adopting the above technical solution, the sample holder can stably clamp the sample and also rotate the sample, making it convenient to conduct combustion tests on the sample from different angles.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. When it is necessary to clean the drip residue in the collection tray, the collection tray is heated by the heating element set in the heating chamber, which softens the drip and reduces the adhesion strength of the drip, so as to facilitate the cleaning of the drip residue;

[0021] 2. The protective baffle can prevent dust / dripping and other debris from falling into the gap between the collection tray and the box from the side of the collection tray, thus affecting the normal sliding of the collection tray and ensuring that the collection tray can smoothly enter and exit the box through the collection port;

[0022] 3. The sample holder can stably clamp the sample and also allow the sample to rotate, making it convenient to conduct combustion tests on the sample from different angles. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a combustion chamber in Example 1;

[0024] Figure 2 This is a schematic diagram of the support extraction port and the material extraction port in Example 1;

[0025] Figure 3 This is a schematic diagram of the sample holder structure in Example 1;

[0026] Figure 4 This is a schematic diagram of the structure of the second U-shaped clamp and the rotating seat in Embodiment 1;

[0027] Figure 5 This is a schematic diagram of the collection tray in Example 1;

[0028] Figure 6 This is a schematic diagram of the support structure in Example 2.

[0029] In the diagram, 1. Box body; 11. Support outlet; 12. Collection outlet; 13. Upper guide rail; 14. Lower guide rail; 15. Ventilation slot; 16. Inspection door; 17. Support; 171. Guide rod; 18. Gas ignition gun; 19. Telescopic cylinder; 10. Observation window; 2. Sample rack; 21. U-shaped frame; 211. Support crossbar; 212. Support longitudinal bar; 213. Upper slider; 214. Rotary motor; 22. Rotary seat; 221. Rotating shaft; 222. Slide groove; 23. First U-shaped clamp; 24. Second U-shaped clamp; 241. Connecting block; 242. Bolt; 3. Collection tray; 31. Base plate; 32. Side baffle; 33. Lower slider; 34. Protective baffle; 35. Heating chamber; 36. Heating rod. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] Example 1:

[0032] This application discloses a combustion chamber, referring to... Figure 1 , Figure 2 The system includes a housing 1, a sample holder 2 that is slidably connected to the inner wall of the housing 1 for sample clamping and fixing, and a collection tray 3 that is slidably connected to the inner wall of the housing 1 and located below the sample holder 2. The left side wall of the housing 1 has a support extraction port 11 and a collection extraction port 12, with the collection extraction port 12 located below the support extraction port 11.

[0033] Reference Figure 2 , Figure 3An upper guide rail 13 is fixedly connected to the inner wall of the bottom wall of the support opening 11, and the upper guide rail 13 extends into the interior of the housing 1. The sample holder 2 includes a U-shaped frame 21 that slides through the support opening 11, a rotating seat 22 that is rotatably connected to the U-shaped frame 21, a first U-shaped clamp 23 that is fixedly connected to the rotating seat 22, and a second U-shaped clamp 24 that slides toward or away from the first U-shaped clamp 23 and is connected to the rotating seat 22. The U-shaped frame 21 includes a pair of spaced-apart support crossbars 211 and a support longitudinal bar 212 that is fixedly connected between one end of the two support crossbars 211. An upper slider 213 that is slidably connected to the upper guide rail 13 is fixedly connected to the lower end face of the support crossbars 211, and a handle is fixedly connected to the outer wall of the support longitudinal bar 212. In other embodiments, the entire surface of the U-shaped frame 21 is coated with a heat-insulating coating. Specifically, the heat-insulating coating may be an aerogel coating or a ceramic composite coating.

[0034] A rotating base 22 is fixedly connected to a rotating shaft 221 rotatably connected to a supporting longitudinal bar 212. The supporting longitudinal bar 212 is provided with a rotating component that drives the rotating shaft 221 to rotate around its own axis. In this embodiment, the rotating component is a rotary motor 214 fixedly connected to the outer wall of the supporting longitudinal bar 212. Specifically, the rotary motor 214 is a stepper motor. The output shaft of the rotary motor 214 rotatably passes through the supporting longitudinal bar 212. The output shaft of the rotary motor 214 and the rotating shaft 221 are connected by a transmission assembly. In this embodiment, the transmission assembly can be a gear set transmission; in other embodiments, the transmission assembly can be a synchronous belt transmission.

[0035] Reference Figure 3 , Figure 4 The first U-shaped clamp 23 and the second U-shaped clamp 24 are located between two supporting crossbars 211, and are parallel to each other. A connecting block 241 is fixedly connected to the outer wall of the closed end of the second U-shaped clamp 24. The connecting block 241 is slidably connected to the rotating seat 22 in the direction of approaching or moving away from the first U-shaped clamp 23. The upper end face of the rotating seat 22 is provided with a sliding groove 222 for the connecting block 241 to slide. The second U-shaped clamp 24 is threaded with bolts 242 that are connected to the first U-shaped clamp 23. Multiple bolts 242 are provided. The sample is placed between the first U-shaped clamp 23 and the second U-shaped clamp 24. After tightening the bolts 242, the first U-shaped clamp 23 and the second U-shaped clamp 24 clamp the sample.

[0036] Reference Figure 2 , Figure 5The collection tray 3 is made of stainless steel and includes a base plate 31 and side rails 32 fixedly connected to the periphery of the base plate 31. A handle is fixedly connected to the outer wall of the left side rail 32. Lower guide rails 14 are fixedly connected to the inner walls of opposite sides of the housing 1. Lower sliders 33 that slide on the lower guide rails 14 are fixedly connected to the lower side walls of the side rails 32 on the front and rear sides. Protective baffles 34 are fixedly connected to the upper outer walls of the side rails 32 on the front and rear sides. The protective baffles 34 are located above the sliders 33, and the outer wall of the protective baffles 34 abuts against the inner wall of the housing 1. The protective baffles 34 are inclined, and the free end of the protective baffles 34 is higher than the fixed end of the protective baffles 34. The base plate 31 has a heating cavity 35, and the base plate 31 is provided with a heating element built into the heating cavity 35. In this embodiment, the heating element is an electric heating rod 36 built into the heating cavity 35. The connector end of the electric heating rod 36 is exposed on the left side of the collection plate 3. Multiple electric heating rods 36 are provided and distributed at intervals in the heating cavity 35.

[0037] Reference Figure 1 A handle is fixedly connected to the upper end face of the box body 1. Ventilation slots 15 communicating with the inner cavity are opened on the upper part of the four side walls of the box body 1. The front side wall of the box body 1 has an observation window 10. An inspection door 16 is hinged to the right side wall of the box body 1. A support 17 is provided on the inner wall of the inspection door 16 between the sample rack 2 and the collection tray 3. In this embodiment, the support 17 is fixedly connected to the inner wall of the inspection door 16. A gas ignition gun 18 for igniting one side of the sample is fixedly connected to the support 17.

[0038] The implementation principle of a combustion chamber according to an embodiment of this application is as follows: In the initial state, the first U-shaped clamp 23 and the second U-shaped clamp 24 are in a horizontal state. The sample holder 2 is first slid out of the chamber 1 and the sample is placed between the first U-shaped clamp 23 and the second U-shaped clamp 24. The locking bolt 242 is tightened so that the first U-shaped clamp 23 and the second U-shaped clamp 24 clamp the sample. Then the sample holder 2 is slid into the chamber 1 and the gas ignition gun 18 is started to ignite one side of the sample. When it is necessary to switch the state of the sample (such as switching to the vertical state), the rotary motor 214 is started to drive the rotating shaft 221 to rotate 90 degrees, so that the first U-shaped clamp 23 and the second U-shaped clamp 24 are in a vertical state.

[0039] The drips produced by the combustion of the sample fall into the collection tray 3. When it is necessary to clean the drip residue in the collection tray 3, the collection tray 3 is slid out of the box 1 and connected to the connector of the heating rod 36 through the wiring so that the heating rod 36 heats the collection tray 3, thereby softening the drips in the collection tray 3 and reducing the adhesion strength of the drips. The staff can then use a scraper to clean the drip residue, reducing the cleaning difficulty.

[0040] Example 2:

[0041] The difference from Example 1 is that, referring to Figure 6 The support 17 is fixedly connected to a guide rod 171, which slides through the inspection door 16. The inspection door 16 is equipped with a driving component for sliding the support 17. Specifically, the driving component is a telescopic cylinder 19, which can be an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. The cylinder body of the telescopic cylinder 19 is fixedly connected to the outer wall of the inspection door 16, and the piston rod of the telescopic cylinder 19 passes through the inspection door 16 and is fixedly connected to the outer wall of the support 17. The sliding position of the support 17 is adjusted by extending and retracting the piston rod of the telescopic cylinder 19, thereby facilitating the ignition operation of samples of different lengths.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A combustion chamber characterized by: The sample holder (2) is slidably connected to the inner wall of the sample holder (1) for sample clamping, and a collection tray (3) is slidably connected to the inner wall of the sample holder (2) and located below the sample holder (2). The side wall of the sample holder (1) is provided with a material extraction port (12) for the collection tray (3) to slide in and out. The collection tray (3) includes a bottom plate (31) and a side baffle (32) fixedly connected to the periphery of the bottom plate (31). The bottom plate (31) has a heating chamber (35) and a heating element built into the heating chamber (35).

2. A combustion box according to claim 1, characterized in that: The heating element is an electric heating rod (36) built into the heating cavity (35).

3. A combustion box according to claim 2, characterized in that: Multiple heating rods (36) are provided and spaced apart in the heating chamber (35).

4. The combustion box of claim 1, wherein: The inner walls of the opposite sides of the box (1) are fixedly connected to the lower guide rail (14), and the lower side wall of the side block (32) is fixedly connected to the lower slide block (33) that slides on the lower guide rail (14).

5. A combustion chamber according to claim 4, characterised in that: The upper outer wall of the side guard (32) is fixedly connected to a protective baffle (34), which is located above the lower slider (33), and the outer wall of the protective baffle (34) abuts against the inner wall of the box (1).

6. A combustion box according to claim 5, characterised in that: The protective baffle (34) is inclined, with the free end of the protective baffle (34) higher than the fixed end of the protective baffle (34).

7. The combustion box of claim 1, wherein: The sample holder (2) includes a U-shaped frame (21), a rotating seat (22) rotatably connected to the U-shaped frame (21), a first U-shaped clamp (23) fixedly connected to the rotating seat (22), and a second U-shaped clamp (24) slidably connected to the rotating seat (22) in the direction of approaching or moving away from the first U-shaped clamp (23). The U-shaped frame (21) includes a pair of support crossbars (211) slidably connected to the inner walls of both sides of the box (1) and a support longitudinal bar (212) fixedly connected between one end of the two support crossbars (211). The rotating seat (22) is fixedly connected to a rotating shaft (221) rotatably connected to the support longitudinal bar (212). The support longitudinal bar (212) is provided with a rotating component that drives the rotating shaft (221) to rotate around its own axis. The first U-shaped clamp (23) and the second U-shaped clamp (24) are located between the two support crossbars (211). The first U-shaped clamp (23) and the second U-shaped clamp (24) clamp the sample.

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