A wind speed control device for a fire resistance test furnace

Abstract

The utility model discloses a wind speed control device for fire resistance test furnace relates to fire resistance test furnace technical field, including test furnace body, inlet pipe, steady flow end pipe, the inside fixed mounting of steady flow end pipe has the support page board, the side end portion rotation of support page board installs the main shaft, the air outlet component sets up inside test furnace body, the air outlet component includes first jet pipe and second jet pipe, the side end portion of first jet pipe and second jet pipe all is provided with the clamping groove, and the end of first jet pipe / second jet pipe inserts the installation position of test furnace body top end, and the strip air outlet of first jet pipe can output concentrated airflow, makes the partial area in test furnace body obtain higher wind speed, and the honeycomb air outlet of second jet pipe can output dispersed airflow, lets the airflow velocity in test furnace body be more even, and the test scene of adaptation low wind speed, even airflow can output characteristic differentiation's airflow.

Description

Technical Field

[0001] This utility model relates to the field of refractory test furnace technology, and in particular to a wind speed control device for a refractory test furnace. Background Technology

[0002] Currently, existing refractory testing furnaces (such as patent publication number: CN219474286U) disclose a refractory testing furnace with a clamping component as a clamping platform. The clamping mold set on the top of the clamping screw can clamp the test workpiece. The clamping mold can well meet the clamping needs of the workpiece, allowing the clamped workpiece to burn better and more completely. It is convenient for the operator to record data while burning. A bottom receiving plate is set at the bottom of the test furnace, which can effectively receive the combustion ash and facilitate the centralized treatment of the ash.

[0003] In the aforementioned patent, dust and particles generated during high-temperature testing accumulate in the air duct, reducing the ventilation cross-sectional area. The accumulated dust not only increases airflow resistance and affects airflow, but also makes it difficult to thoroughly clean the integrated air duct, requiring production shutdown and disassembly of the entire system, resulting in high maintenance costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a wind speed control device for a refractory testing furnace, which solves the technical problems of dust and particles generated during high-temperature testing accumulating in the air duct, reducing the ventilation cross-sectional area, increasing airflow resistance and causing insufficient airflow, and making it difficult to thoroughly clean the integral air duct, requiring production shutdown and disassembly of the entire system, resulting in high maintenance costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A wind speed control device for a refractory testing furnace includes a furnace body, an inlet pipe, and a flow stabilizing pipe. A support plate is fixedly installed inside the flow stabilizing pipe, and a main shaft is rotatably mounted on the side end of the support plate. The device also includes: An air outlet assembly is disposed inside the test furnace body. The air outlet assembly includes a first jet pipe and a second jet pipe. The side ends of the first jet pipe and the second jet pipe are provided with slots. A locking frame is fixedly installed at the top of the second jet pipe. A positioning plate is provided at the top of the flow stabilizing end pipe. Sliding plates are slidably installed at both side ends of the positioning plate. A plug-in seat is fixedly installed at the end of each sliding plate. The top of the test furnace body is provided with two mounting clamps, which are installed symmetrically, and the inner side of each mounting clamp is provided with a friction strip.

[0006] Preferably, each of the sliding plates is provided with a threaded screw inside, and each of the threaded screws is provided with a transmission gear at its top end; Each of the positioning plates is equipped with a knob at its top, and the end of the knob engages with two threaded screws.

[0007] Preferably, a plurality of main blades are fixedly mounted on the surface of the main shaft, and each of the main blades has a hollow internal structure; Each of the main blades has a secondary blade slidably installed inside it, and each secondary blade has an electric push rod fixedly installed at its end. Both ends of the flow stabilizing end pipe are fixedly equipped with sealing strips, and each sealing strip is connected to the groove at the end of the air inlet end pipe.

[0008] Compared with the prior art, the present invention has the following beneficial effects; In this invention, the two ends of the flow stabilizing pipe are provided with sealing strips (rubber material). First, connect the flow stabilizing pipe to the slots at the ends of the first jet pipe / second jet pipe. Then, insert the air inlet pipe (the other end of which is connected to the blower) into the other side of the flow stabilizing pipe. If the strip-shaped air outlet of the first jet pipe is blocked or the main blade / sub-blade inside the flow stabilizing pipe is damaged, there is no need to replace the entire air duct. Only the corresponding sections need to be disassembled for repair / replacement, reducing maintenance costs and time.

[0009] In this invention, the ends of the first jet pipe / second jet pipe are inserted into the mounting position at the top of the test furnace body. The strip-shaped air outlet of the first jet pipe can output concentrated airflow, so that a local area inside the test furnace body can obtain a higher wind speed. The honeycomb-shaped air outlet of the second jet pipe can output dispersed airflow, so that the airflow velocity inside the test furnace body is more uniform. It is suitable for test scenarios with low wind speed and uniform airflow, and can output airflow with different characteristics. Attached Figure Description

[0010] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0011] Figure 1 This is a structural diagram of the experimental furnace body of this utility model; Figure 2 This is a structural diagram of the air outlet component of this utility model; Figure 3 This is a structural diagram of the positioning plate of this utility model; Figure 4 This is a structural diagram of the current-stabilizing end tube of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram at point A.

[0012] In the diagram: 11. Test furnace body; 12. Inlet pipe; 13. Flow stabilizing pipe; 14. First jet pipe; 15. Second jet pipe; 16. Mounting fixture; 17. Locking frame; 18. Positioning plate; 19. Sliding plate; 21. Plug-in socket; 22. Threaded screw; 23. Sealing strip; 24. Support blade; 25. Main shaft; 26. Main blade; 27. Secondary blade; 28. Electric push rod. Detailed Implementation

[0013] This application provides a wind speed control device for a refractory testing furnace, which effectively solves the problem of dust and particles depositing in the air duct during high-temperature testing, reducing the ventilation cross-sectional area. Dust accumulation not only increases airflow resistance and affects airflow, but also makes it difficult to thoroughly clean the integral air duct, requiring production shutdown and disassembly of the entire system, resulting in high maintenance costs. The two ends of the flow stabilizing end pipe are equipped with sealing strips (rubber material). First, the flow stabilizing end pipe is connected to the slots on the side ends of the first jet pipe / second jet pipe. Then, the air inlet end pipe (the other end of which is connected to the blower) is inserted into the other side of the flow stabilizing end pipe. If the strip-shaped air outlet of the first jet pipe is blocked or the main blade / auxiliary blade inside the flow stabilizing end pipe is damaged, there is no need to replace the entire air duct. Only the corresponding sections need to be disassembled for repair / replacement, reducing maintenance costs and labor time.

[0014] Example 1 like Figure 1 - Figure 5 As shown, the technical solution in this application embodiment effectively solves the technical problems of dust and particles generated during high-temperature testing depositing in the air duct, reducing the ventilation cross-sectional area, increasing airflow resistance, resulting in insufficient airflow, and making it difficult to thoroughly clean the integral air duct, requiring production shutdown and disassembly of the entire system, leading to high maintenance costs. The overall approach is as follows: To address the problems existing in the prior art, this utility model provides a wind speed control device for a refractory test furnace, including a test furnace body 11, an air inlet pipe 12, and a flow stabilizing pipe 13. A support plate 24 is fixedly installed inside the flow stabilizing pipe 13, and a main shaft 25 is rotatably installed on the side end of the support plate 24. The other end of the air inlet pipe 12 is connected to a blower. Through the cooperation of the air inlet pipe 12 and the flow stabilizing pipe 13, air is delivered into the interior of the first jet pipe 14. An air outlet assembly is located inside the test furnace body 11. The air outlet assembly includes a first jet pipe 14 and a second jet pipe 15. Both the first and second jet pipes 14 and 15 have slots on their sides. A locking frame 17 is fixedly installed at the top of the second jet pipe 15. A positioning plate 18 is provided at the top of the flow stabilizing end pipe 13. Sliding plates 19 are slidably installed on both sides of the positioning plate 18. A plug-in seat 21 is fixedly installed at the end of each sliding plate 19. The air outlet inside the first jet pipe 14 has a strip-shaped structure, and the air outlet inside the second jet pipe 15... The air outlet has a honeycomb structure. The airflow delivered by the first jet pipe 14 and the second jet pipe 15 into the test furnace body 11 has different flow rates and directions. By moving the first jet pipe 14 or the second jet pipe 15, the ends of the first jet pipe 14 or the second jet pipe 15 are respectively inserted into the top of the test furnace body 11. By moving the two sets of installation clamps 16, the first jet pipe 14 or the second jet pipe 15 is fixed. At the same time, the air inlet pipe 12 can be connected to the side end of the first jet pipe 14 or the second jet pipe 15 to complete the combined installation of the air duct. The top of the test furnace body 11 is provided with two mounting clamps 16. The two mounting clamps 16 are installed symmetrically. The inner side of each mounting clamp 16 is provided with a friction strip. By sliding the two mounting clamps 16, the two mounting clamps 16 press the outer side of the first jet pipe 14 or the second jet pipe 15 to fix the first jet pipe 14 or the second jet pipe 15. By screwing the bolts on both sides of the mounting clamps 16, the continuously rotating bolts gradually tighten the two mounting clamps 16. Each sliding plate 19 is provided with a threaded screw 22 inside, and each threaded screw 22 is provided with a transmission gear at its top end. The threaded screw 22 rotates inside the sliding plate 19, and the sliding plate 19 slides along the side end of the positioning plate 18. Each positioning plate 18 has a knob at its top, and the end of the knob engages with two threaded screws 22. By rotating the knob clockwise, the end of the knob drives the two threaded screws 22 to move. The threaded screws 22 rotate inside the sliding plate 19. While driving the sliding plate 19 to move, the sliding plate 19 drives the plug seat 21 to align with the position of the two locking frames 17. Press down on the positioning plate 18 and the sliding plate 19 to insert the plug seat 21 into the inside of the locking frame 17. By rotating the knob in the opposite direction, the two sliding plates 19 are driven to slide towards the side end of the positioning plate 18. The two sliding plates 19 drive the plug seat 21 to press against the inside of the locking frame 17, gradually tightening the position of the air intake pipe 12 and the first jet pipe 14. The position of the flow stabilizing pipe 13 is fixed by bidirectional compression. Multiple main blades 26 are fixedly mounted on the surface of the main shaft 25. Each main blade 26 has a hollow structure inside. By installing multiple sets of main blades 26 at an angle, air flows inside the flow stabilizing end pipe 13. The flowing air blows towards the multiple main blades 26, causing the main blades 26 to drive the main shaft 25 to rotate at the side end of the supporting blade 24. Each main blade 26 has a secondary blade 27 slidably installed inside it. Each secondary blade 27 has an electric push rod 28 fixedly installed at its end. By driving the electric push rod 28, the electric push rod 28 can extend and retract inside the main blade 26. The electric push rod 28 generates a thrust on the secondary blade 27, which guides the secondary blade 27 to slide inside the main blade 26, thus extending the dimensions of the main blade 26 and the secondary blade 27. Both sides of the flow stabilizing end pipe 13 are fixedly equipped with sealing strips 23. Each sealing strip 23 is connected to the groove on the side end of the air intake end pipe 12. The sealing strips 23 are made of rubber. The two ends of the flow stabilizing end pipe 13 are respectively connected to the air intake end pipe 12 and the first jet pipe 14. First, fix the position of the first jet pipe 14 or the second jet pipe 15, move the flow stabilizing end pipe 13, and connect the flow stabilizing end pipe 13 to the side ends of the first jet pipe 14 and the second jet pipe 15. Then move the air intake end pipe 12 and insert the air intake end pipe 12 into the side end of the flow stabilizing end pipe 13. The two sealing strips 23 are respectively connected to the air intake end pipe 12 and the first jet pipe 14.

[0015] Example 2 This embodiment specifically discloses a wind speed control device for a refractory testing furnace, including the following steps: The first step involves inserting the air outlet assembly, which includes a first jet pipe 14 (a strip-shaped air outlet) and a second jet pipe 15 (a honeycomb-shaped air outlet). These two pipes output airflow with different velocities and directions. The ends of the first jet pipe 14 and the second jet pipe 15 are inserted into the mounting positions at the top of the test furnace body 11. The top of the test furnace body 11 has two parallel T-shaped guide grooves (aligned with the distribution direction of the mounting clamps 16). The bottoms of the two mounting clamps 16 are equipped with T-shaped sliders, which embed into the T-shaped guide grooves, allowing the mounting clamps to... The fixture 16 can slide stably along the slide groove to avoid displacement during the sliding process. Each mounting fixture 16 has a lug with internal thread symmetrically arranged on the outer side wall. Two adjusting bolts are respectively inserted into the threaded holes of the lugs on the corresponding sides of the two mounting fixtures 16, and the ends of the adjusting bolts abut against the outer side wall of the other mounting fixture 16. When the adjusting bolts are turned, the axial thrust of the bolts will drive the two mounting fixtures 16 to slide towards each other along the T-shaped slide groove, and cooperate with the friction band on the inner side to squeeze the first air pipe 14 / second air pipe 15 to achieve tightening and fixing. After being regulated by the flow stabilizer pipe 13, the airflow enters the first jet pipe 14 / second jet pipe 15 and is output through the air outlet with different structures. If the first jet pipe 14 is used, the airflow is sprayed out in a concentrated strip shape, the flow velocity is more concentrated and the local wind speed is higher. If the second jet pipe 15 is used, the airflow is sprayed out after being dispersed through the honeycomb holes, the flow velocity is more uniform and the local wind speed is relatively lower.

[0016] The second step involves installing sealing strips 23 (made of rubber) on both sides of the flow stabilizer pipe 13. First, connect the flow stabilizer pipe 13 to the slots on the sides of the first jet pipe 14 / second jet pipe 15. Then, insert the air inlet pipe 12 (the other end of which is connected to the blower) into the other side of the flow stabilizer pipe 13. The sealing strips 23 elastically fill the gaps to achieve a pipe seal (preventing air leakage from affecting the wind speed). Rotate the knob on the top positioning plate 18 of the flow stabilizer pipe 13 (clockwise). The end of the knob engages with the threaded part in the sliding plate 19. The lever 22 (with a transmission gear at the top) engages, driving the threaded screw 22 to rotate, causing the sliding plate 19 to slide along the side of the positioning plate 18, so that the plug seat 21 at the end of the sliding plate 19 aligns with the locking frame 17 on the jet pipe. Press the positioning plate 18 down and insert the plug seat 21 into the locking frame 17. Then rotate the knob in the opposite direction to make the two sliding plates 19 retract toward the side of the positioning plate 18, causing the plug seat 21 to press against the inside of the locking frame 17, finally tightening the position of the air intake pipe 12 and the jet pipe, and firmly fixing the flow stabilizing pipe 13. A main shaft 25 is rotatably mounted on a support plate 24 inside the flow stabilizing end pipe 13. Multiple main blades 26 are fixedly inclined on the surface of the main shaft 25. When the air delivered by the blower enters the flow stabilizing end pipe 13, the airflow impacts the inclined main blades 26, causing the main shaft 25 to rotate. The main blades 26 simultaneously serve to guide and stabilize the flow. The main blades 26 have a hollow structure, with auxiliary blades 27 slidably installed inside. The end of the auxiliary blades 27 is connected to an electric push rod 28. Driving the electric push rod 28 to extend or retract can guide the auxiliary blades 27 to slide within the main blades 26, extending the overall size of the main blades 26 and auxiliary blades 27. When the auxiliary blades 27 extend, the cross-sectional area of ​​the flow channel inside the flow stabilizing end pipe 13 changes, and the effective guiding area of ​​the blades increases, which can reduce the airflow velocity and enhance the flow stabilizing effect. When the auxiliary blades 27 retract, the cross-sectional area of ​​the flow channel and the guiding area of ​​the blades decrease, and the airflow velocity will increase accordingly.

[0017] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A wind speed control device for a refractory test furnace, comprising a test furnace body (11), an inlet pipe (12), and a flow stabilizing pipe (13), wherein a support plate (24) is fixedly installed inside the flow stabilizing pipe (13), and a main shaft (25) is rotatably installed on the side end of the support plate (24), characterized in that, Also includes: An air outlet assembly is disposed inside the test furnace body (11). The air outlet assembly includes a first jet pipe (14) and a second jet pipe (15). The side ends of the first jet pipe (14) and the second jet pipe (15) are provided with slots. The top end of the second jet pipe (15) is fixedly installed with a locking frame (17). The top end of the flow stabilizing end pipe (13) is provided with a positioning plate (18). The two side ends of the positioning plate (18) are slidably installed with sliding plates (19). The end of each sliding plate (19) is fixedly installed with a plug-in seat (21). The top of the test furnace body (11) is provided with two mounting clamps (16), which are installed symmetrically, and friction strips are provided on the inner side of each of the two mounting clamps (16).

2. The wind speed control device for a refractory testing furnace as described in claim 1, characterized in that, Each of the sliding plates (19) is provided with a threaded screw (22) inside, and a transmission gear is provided at the top of each of the threaded screws (22).

3. The wind speed control device for a refractory testing furnace as described in claim 1, characterized in that, Each of the positioning plates (18) is provided with a knob rod at its top end, and the end of the knob rod is engaged with two threaded screws (22).

4. The wind speed control device for a refractory testing furnace as described in claim 1, characterized in that, Multiple main blades (26) are fixedly mounted on the surface of the main shaft (25), and each main blade (26) has a hollow internal structure.

5. The wind speed control device for a refractory testing furnace as described in claim 4, characterized in that, Each of the main blades (26) has a secondary blade (27) slidably mounted inside, and each of the secondary blades (27) has an electric push rod (28) fixedly mounted at its end.

6. A wind speed control device for a refractory testing furnace as described in any one of claims 1-5, characterized in that, Both sides of the flow stabilizing end pipe (13) are fixedly installed with sealing strips (23), and each sealing strip (23) is connected to the groove at the side end of the air inlet end pipe (12).

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