Differential pressure testing mechanism for ceramic fiber tube

Abstract

The invention discloses a ceramic fiber tube differential pressure testing mechanism, and relates to the technical field of testing mechanisms, the ceramic fiber tube differential pressure testing mechanism comprises a main body, an operation plate is arranged at the top end of the main body, a jacking mechanism is arranged at the bottom end of the operation plate, the jacking mechanism comprises a connecting rod, a rotating shaft, a fixed seat, a jacking plate and a moving column, the connecting rod is arranged at the top end of the fixed seat, and the rotating shaft is arranged on the moving column. The rotating shaft is arranged in the connecting rod, the fixing base is arranged at the top end of the operation plate, and the jacking plate is arranged at the top end of the connecting rod. A main body is connected with external power supply equipment, a ceramic fiber pipe is manually plugged from an inlet of a conical guide rail, a silica gel roller in a placement shell achieves automatic centering and positioning, after the ceramic fiber pipe touches a top plate, a rotating ring is driven to rotate, a clamping block drives a sealing block to seal a gap between the ceramic fiber pipe and an air pipe, and it is ensured that air pressure directly reaches the inside of the pipe; the double-thread design of the rotating rod achieves time-sharing movement of the moving column and the telescopic sleeve, and the whole structure is easy and convenient to operate and reliable in sealing.

Description

Technical Field

[0001] The present invention relates to the technical field of testing mechanisms, in particular to a ceramic fiber tube differential pressure testing mechanism. Background Art

[0002] The background technology of the ceramic fiber tube differential pressure testing mechanism originates from the demand for heat-resistant pipe performance testing of high-temperature industrial equipment. Ceramic fiber tubes are widely used in flue gas treatment systems in metallurgy, chemical industry and other fields due to their excellent high-temperature resistance and low thermal conductivity. Their structural integrity directly affects the safety of equipment operation. Early differential pressure detection mainly relied on mechanical pressure gauges with temporary pipeline connections, which had problems such as low measurement accuracy and poor high-temperature adaptability. With the development of sensor technology, the application of differential pressure transmitters has significantly improved the test accuracy. However, the porous surface of ceramic fiber tubes makes traditional sealing methods prone to leakage. Modern testing institutions use high-temperature silicone sealing rings. Combined with an adaptive fixture, it ensures airtightness while avoiding mechanical damage to the brittle tube body. The test system integrates a temperature compensation module to eliminate the interference of ambient thermal radiation on the pressure signal. Some advanced institutions have also introduced micro-flow control technology to achieve dynamic detection under different working conditions by adjusting the test gas flow rate. In terms of data acquisition, it has developed from early analog signal recorders to digital processing systems, which can analyze the pressure decay curve in real time and automatically determine the permeability of the tube body. The evolution of this technology has always revolved around the three core needs of precise measurement, non-destructive testing and automated evaluation in high-temperature environments, providing a reliable means for quality control of ceramic fiber tubes.

[0003] The differential pressure testing mechanism of ceramic fiber tubes in the existing technology often has the following disadvantages; the positioning method of the existing ceramic fiber tube differential pressure testing mechanism is inefficient and highly dependent on manual operation experience. The traditional solution requires manual adjustment of the centering position of the positioning shaft and the roller platform. The process is cumbersome and time-consuming, and improper operation can easily lead to deviation of the center axis, which in turn causes problems such as poor sealing or collision of the tube body. In terms of sealing structure, a flange connection method with bolts tightened and rubber gaskets is adopted. After long-term use, air leakage is prone to occur due to aging of the gasket, affecting the test accuracy. In addition, the rigid positioning shaft is in direct contact with the surface of the ceramic tube. Due to insufficient material matching, it is easy to cause scratches or even breakage on the surface of the tube body during assembly and testing, increasing the risk of loss during the test process. Summary of the Invention

[0004] Based on this, the present invention aims to provide a differential pressure test mechanism for ceramic fiber tubes to address the problems of existing differential pressure test mechanisms, such as low positioning efficiency and reliance on manual centering, which can easily lead to poor sealing or tube damage. Flange gaskets can also age and leak easily, while the rigid positioning shaft can easily scratch the brittle ceramic tube due to direct contact, compromising test accuracy and reliability.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ceramic fiber tube differential pressure testing mechanism, comprising a main body, an operating panel is provided at the top of the main body, a lifting mechanism is provided at the bottom of the operating panel, the lifting mechanism comprises a connecting rod, a rotating shaft, a fixed seat, a lifting plate and a moving column, the connecting rod is provided at the top of the fixed seat, the rotating shaft is provided inside the connecting rod, the fixed seat is provided at the top of the operating panel, the lifting plate is provided at the top of the connecting rod, the moving column is provided at the top of the fixed seat, a linear guide is provided at the top of the lifting plate, and a placing column is provided at the top of the linear guide. The shell is provided, a motor is provided at the top of the operating panel, a rotating rod is connected to the output sleeve of the motor, a telescopic sleeve is provided at one end of the rotating rod, a clamping mechanism is provided at one end of the telescopic sleeve, the clamping mechanism includes a first gear, a second gear and a clamping block, the first gear is provided at one end of the setting plate, the second gear is provided at one end of the setting plate, the clamping block is provided at the top of the second gear, the setting plate is provided inside the operating panel, one end of the setting plate is movably connected with an arc plate, the top of the operating panel is provided with a mounting plate that matches the motor, and a control panel is provided on the outside of the main body.

[0006] By adopting the above technical solution, the staff connects the main body with the external power supply equipment to ensure the internal power supply of the main body, and then the staff manually inserts the external ceramic fiber tube that needs to be tested for differential pressure from the conical guide rail entrance at the top of the main body. When one end of the ceramic fiber tube touches the placement shell, and the multiple sets of silicone rollers arranged inside the placement shell cooperate with the placement of the ceramic fiber tube, it plays a role of automatic centering and positioning. When the staff completes the insertion, one end of the ceramic fiber tube touches the top plate set at one end of the placement shell. At this time, the linear guide rail is used to control the placement shell to move backward, thereby exposing the operating space of the sealing mechanism and the clamping mechanism. At this time, the motor inside the main body starts to operate, and the rotating rod arranged at its output end rotates forward, and the forward rotation of the rotating rod causes the moving column arranged on its outside to control the movement of the moving column by cooperating with the internal thread set inside the moving column and the external thread of the rotating rod.

[0007] Furthermore, a push rod is provided at the bottom end of the lifting plate, the clamping block and the second gear are connected by a connecting rod, a roller is provided between the setting plate and the arc plate, a rubber layer is provided on one side of the clamping block, the sealing block is fixed to one end of the locking block by screws, and the rotating ring and the sealing block are connected by a connecting rod.

[0008] By adopting the above technical solution, the two sets of connecting rods can use the rotating shaft as the axis to slowly lower the lifting plate and the placement shell arranged above it together with the external ceramic fiber tube. When the lifting plate descends, it will drive the push rod arranged at its bottom end to descend synchronously, and through the movement of the push rod, it squeezes the corresponding tooth plate, so that the tooth plate moves downward. When the tooth plate moves downward, the spring arranged at one end of the tooth plate can maintain elastic potential energy while descending, which facilitates the subsequent reset when the lifting plate is raised.

[0009] Furthermore, a sensor assembly plate is provided at the top of the operating panel, multiple groups of silicone rollers are provided inside the placement shell, an air duct is provided on one side of the main body, a threaded hole is provided inside the movable column to cooperate with the rotating rod, and a limit frame is provided at the bottom end of the lifting plate to cooperate with the connecting rod.

[0010] By adopting the above technical solution, when the tooth plate moves downward, it will drive the first gear meshing with its teeth at one end to rotate. When the first gear rotates, it will drive the second gear, and through the connecting rod, the two sets of clamping blocks are brought closer to each other, so as to just clamp the ceramic fiber tube that is slowly moved downward by the jacking mechanism. When the ceramic fiber tube is clamped, the motor is still rotating in the forward direction, so the rotating rod is still rotating, and through the rotation of the rotating rod, the telescopic sleeve provided at one end of the rotating rod can move forward synchronously under the transmission of the rotating rod, so that the clamping mechanism moves the ceramic fiber tube forward, which plays a role in dispersing contact stress and avoiding rigid clamping from scratching the ceramic surface.

[0011] Furthermore, a tooth plate is provided inside the operating panel, and the tooth plate corresponds to the top rod, a spring is provided at one end of the tooth plate, a conical guide rail is provided at the top of the operating panel to cooperate with the sealing mechanism, a cavity is opened inside the operating panel to cooperate with the tooth plate, and a fixing rod is provided inside the operating panel to cooperate with the spring.

[0012] By adopting the above technical solution, when the clamping mechanism moves, the setting plate at one end thereof will squeeze the arc plate due to the roller provided on its outer side, and move along the spiral groove of the arc plate, so that the arc plate drives the rotating ring to rotate. When the rotating ring rotates, the rotating ring will use the connecting rod to make the multiple sets of engaging blocks rotate with the connection between the fixed plates as the axis, so that the multiple sets of engaging blocks drive the sealing blocks provided at one end thereof to seal the gap between the forward-moving ceramic fiber tube and the air duct, so that the wind pressure of the high-speed fan provided inside the main body can directly reach the inside of the ceramic fiber tube through the air duct without being affected by the outside world, thereby playing the role of mechanical linkage to apply uniform radial pressure and the sealing pressure adaptive to the tube diameter.

[0013] In summary, the present invention mainly has the following beneficial effects: the present invention connects the main body with the external power supply equipment, manually inserts the ceramic fiber tube from the entrance of the tapered guide rail, and the silicone roller in the placement shell realizes automatic centering and positioning. After the ceramic fiber tube touches the top plate, the linear guide rail drives the placement shell to move backward, exposing the sealing mechanism and the clamping mechanism. The motor drives the rotating rod to rotate, driving the movable column to move, so that the connecting rod slowly descends the lifting plate and the placement shell with the rotating shaft as the axis. The top rod presses the tooth plate to drive the first gear to rotate, and the second gear drives the clamping block to clamp the ceramic fiber tube. The telescopic sleeve pushes the clamping mechanism forward to disperse the contact stress. The plate roller is set to move along the arc plate slide groove, driving the rotating ring to rotate. The locking block drives the sealing block to seal the gap between the ceramic fiber tube and the air duct, ensuring that the wind pressure reaches directly into the pipe. The double-threaded design of the rotating rod realizes the time-sharing movement of the moving column and the telescopic sleeve. The overall structure is easy to operate and the sealing is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first viewing angle; Figure 2 This is a schematic diagram of the overall structure of the present invention from a second viewing angle; Figure 3 For the present invention Figure 2 A magnified view of point A; Figure 4 Schematic diagram of the internal structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B; Figure 6 Schematic diagram of the internal structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point C; Figure 8 It is a schematic diagram of the local structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point D; Figure 10 It is a schematic diagram of the internal structure position of the present invention; Figure 11 Schematic diagram of the sealing mechanism of the present invention.

[0015] In the figure: 1. main body; 2. control panel; 3. dustproof shell; 4. air duct; 5. sensor assembly plate; 6. tapered guide rail; 7. lifting mechanism; 701. connecting rod; 702. rotating shaft; 703. fixing seat; 704. lifting plate; 705. moving column; 8. clamping mechanism; 801. first gear; 802. second gear; 803. clamping block; 804. setting plate; 9. sealing mechanism; 901. sealing block; 902. fixing ring; 903. rotating ring; 904. fixing plate; 905. locking block; 10. motor; 11. rotating rod; 12. linear guide rail; 13. operation panel; 14. placement shell; 15. telescopic sleeve; 16. ejector rod; 17. tooth plate; 18. fixing rod; 19. spring; 20. arc plate. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0017] The following describes an embodiment of the present invention based on its overall structure.

[0018] A ceramic fiber tube differential pressure testing mechanism, such as Figures 1-11As shown, it includes a main body 1, an operating panel 13 is provided on the top of the main body 1, a dust cover 3 is provided on the top of the operating panel 13, a lifting mechanism 7 is provided at the bottom of the operating panel 13, and the lifting mechanism 7 includes a connecting rod 701, a rotating shaft 702, a fixed seat 703, a lifting plate 704 and a moving column 705. The connecting rod 701 is provided at the top of the fixed seat 703, the rotating shaft 702 is provided inside the connecting rod 701, the fixed seat 703 is provided at the top of the operating panel 13, the lifting plate 704 is provided at the top of the connecting rod 701, the moving column 705 is provided at the top of the fixed seat 703, and the lifting plate 704 is provided at the top of the connecting rod 701. A linear guide 12 is provided with a placement shell 14 at the top of the linear guide 12, a motor 10 is provided at the top of the operating panel 13, the output sleeve of the motor 10 is connected to a rotating rod 11, a telescopic sleeve 15 is provided at one end of the rotating rod 11, a clamping mechanism 8 is provided at one end of the telescopic sleeve 15, the clamping mechanism 8 includes a first gear 801, a second gear 802 and a clamping block 803, the first gear 801 is provided at one end of the setting plate 804, the second gear 802 is provided at one end of the setting plate 804, the clamping block 803 is provided at the top of the second gear 802, the setting plate 804 is provided inside the operating panel 13, and the setting plate 80 4 One end is movably connected with an arc plate 20, and a mounting plate that matches the motor 10 is provided at the top of the operation panel 13. A control panel 2 is provided on the outside of the main body 1. The staff connects the main body 1 to the external power supply equipment to ensure the internal power supply of the main body 1. Then the staff manually inserts the external ceramic fiber tube that needs to be tested for differential pressure from the entrance of the tapered guide rail 6 at the top of the main body 1. When one end of the ceramic fiber tube touches the placement shell 14, the multiple sets of silicone rollers provided inside the placement shell 14 will cooperate with the placement of the ceramic fiber tube, playing the role of automatic centering and positioning. When the staff has completed the insertion, one end of the ceramic fiber tube touches the top plate set at one end of the placement shell 14. At this time, the linear guide 12 controls the placement shell 14 to move backward, thereby exposing the operating space of the sealing mechanism 9 and the clamping mechanism 8. At this time, the motor 10 inside the main body 1 starts to operate, and the rotating rod 11 set at its output end rotates forward. The forward rotation of the rotating rod 11 causes the moving column 705 set on its outer side to control the movement of the moving column 705 by matching the internal thread set inside the moving column 705 with the external thread of the rotating rod 11. For example, a sealing mechanism 9 is provided at one end of the arc plate 20, and the sealing mechanism 9 includes a sealing block 901, a fixed ring 902, a rotating ring 903 and a fixed plate 904. The sealing block 901 is provided at one end of the fixed ring 902, the fixed ring 902 is provided at the top of the fixed plate 904, the rotating ring 903 is provided at one end of the arc plate 20, the fixed plate 904 is provided at the top of the operating plate 13, and a top rod 16 is provided at the bottom end of the lifting plate 704. The clamping block 803 and the second gear 802 are connected by a connecting rod, wherein the two sets of connecting rods are connected. 701 can use the rotating shaft 702 as the axis to slowly lower the lifting plate 704 and the placement shell 14 arranged above it together with the external ceramic fiber tube. When the lifting plate 704 is lowered, it will drive the push rod 16 arranged at its bottom end to fall synchronously, and through the movement of the push rod 16, it squeezes the corresponding tooth plate 17, causing the tooth plate 17 to move downward. When the tooth plate 17 moves downward, the spring 19 arranged at one end of the tooth plate 17 can maintain elastic potential energy while it is descending, so that it can be reset when the lifting plate 704 is raised later. Exemplarily, a roller is provided between the setting plate 804 and the arc plate 20, a rubber layer is provided on one side of the clamping block 803, a sealing block 901 is fixed to one end of the locking block 905 by a screw, the rotating ring 903 is connected to the sealing block 901 by a connecting rod, a sensor collection plate 5 is provided on the top of the operation panel 13, a plurality of groups of silicone rollers are provided inside the placement shell 14, and an air duct 4 is provided on one side of the main body 1. When the tooth plate 17 moves downward, it drives the first gear 801 meshing with its teeth at one end to rotate, and when the first gear 801 rotates, it drives the second gear 802, and the two groups of clamping blocks 803 are brought close to each other through the connecting rod, so as to just clamp the top The lifting mechanism 7 carries the ceramic fiber tube that moves slowly downward. When the ceramic fiber tube is clamped, the motor 10 is still rotating in the forward direction, so the rotating rod 11 is still rotating, and through the rotation of the rotating rod 11, the telescopic sleeve 15 provided at one end of the rotating rod 11 can move forward synchronously under the transmission of the rotating rod 11, so that the clamping mechanism 8 moves forward with the ceramic fiber tube, which plays a role in dispersing contact stress and avoiding the rigid clamping from scratching the ceramic surface. The dustproof shell 3 plays the role of protecting the sealing structure 9 and the clamping structure 8 to prevent external dust from entering. Secondly, the fixed rod 18 plays the role of limiting the position of the spring 19 to prevent displacement during the movement. Exemplarily, a threaded hole is provided inside the movable column 705 to cooperate with the rotating rod 11, a limit frame is provided at the bottom of the lifting plate 704 to cooperate with the connecting rod 701, a sliding limit plate is provided at the bottom of the telescopic sleeve 15, a sliding groove is provided inside the arc plate 20 to cooperate with the setting plate 804, a tooth plate 17 is provided inside the operating plate 13, and the tooth plate 17 corresponds to the ejector rod 16, a spring 19 is provided at one end of the tooth plate 17, and a conical guide rail 6 is provided at the top of the operating plate 13 to cooperate with the sealing mechanism 9, wherein, when the clamping mechanism 8 is moving, the setting plate 804 at one end thereof will squeeze the arc plate 20 due to the roller provided on its outer side, and move along the arc The spiral groove of the plate 20 moves, so that the arc plate 20 drives the rotating ring 903 to rotate. When the rotating ring 903 rotates, the rotating ring 903 will use the connecting rod to make the multiple sets of snap blocks 905 rotate with the connection point of the fixed plate 904 as the axis, so that the multiple sets of snap blocks 905 drive the sealing block 901 set at one end thereof to seal the gap between the forward-moving ceramic fiber tube and the air duct 4, so that the wind pressure of the high-speed fan set inside the main body 1 can directly reach the inside of the ceramic fiber tube through the air duct 4 without being affected by the outside world, thereby playing the role of mechanical linkage to apply uniform radial pressure, and the sealing pressure is adaptive to the tube diameter.

[0019] The working principle of the present invention is as follows: when in use, the staff connects the main body 1 to the external power supply equipment to ensure the internal power supply of the main body 1, and then the staff manually inserts the external ceramic fiber tube that needs to be tested for differential pressure from the entrance of the tapered guide rail 6 at the top of the main body 1. When one end of the ceramic fiber tube touches the placement shell 14, the multiple sets of silicone rollers provided inside the placement shell 14 will cooperate with the placement of the ceramic fiber tube, thereby playing the role of automatic centering and positioning; When the staff has completed the insertion, one end of the ceramic fiber tube touches the top plate provided at one end of the placement shell 14. At this time, the placement shell 14 is controlled by the linear guide 12 to move backward, thereby exposing the operating space of the sealing mechanism 9 and the clamping mechanism 8. At this time, the motor 10 inside the main body 1 starts to operate, and the rotating rod 11 provided at its output end rotates forward. The forward rotation of the rotating rod 11 causes the moving column 705 provided on its outer side to move. The internal thread provided inside the moving column 705 cooperates with the external thread of the rotating rod 11 to control the movement of the moving column 705. Thus, the two sets of connecting rods 701 can use the rotating shaft 702 as the axis to slowly lower the lifting plate 704 and the placement shell 14 arranged above it together with the external ceramic fiber tube. When the lifting plate 704 descends, it will drive the push rod 16 arranged at its bottom end to descend synchronously. The movement of the push rod 16 squeezes the corresponding tooth plate 17, causing the tooth plate 17 to move downward. When the tooth plate 17 moves downward, the spring 19 arranged at one end of the tooth plate 17 can maintain elastic potential energy while it descends, which facilitates the subsequent reset of the lifting plate 704 when it is raised. When the tooth plate 17 moves downward, it drives the first gear 801 meshing with its teeth at one end to rotate. When the first gear 801 rotates, it drives the second gear 802, and the two sets of clamping blocks 803 are brought closer to each other through the connecting rod, so as to just clamp the ceramic fiber tube that is slowly moved downward by the jacking mechanism 7. When the ceramic fiber tube is clamped, the motor 10 is still rotating in the forward direction, so the rotating rod 11 is still rotating, and through the rotation of the rotating rod 11, the telescopic sleeve 15 provided at one end of the rotating rod 11 can move forward synchronously under the drive of the rotating rod 11, so that the clamping mechanism 8 moves forward with the ceramic fiber tube, which plays a role in dispersing contact stress and preventing rigid clamping from scratching the ceramic surface. When the clamping mechanism 8 is moving, the setting plate 804 at one end thereof will squeeze the arc plate 20 due to the roller provided on its outer side, and move along the spiral groove of the arc plate 20, so that the arc plate 20 drives the rotating ring 903 to rotate. When the rotating ring 903 rotates, the rotating ring 903 will use the connecting rod to make the multiple sets of engaging blocks 905 rotate with the connection point of the fixed plate 904 as the axis, so that the multiple sets of engaging blocks 905 drive the sealing block 901 provided at one end thereof to seal the gap between the forward-moving ceramic fiber tube and the air duct 4, so that the wind pressure of the high-speed fan provided inside the main body 1 can directly reach the inside of the ceramic fiber tube through the air duct 4 without being affected by the outside world, thereby playing the role of mechanical linkage to apply uniform radial pressure, and the sealing pressure is adaptive to the tube diameter; Specifically, two sets of threads are provided on the outer side of the rotating rod 11, one set is a thread that cooperates with the moving column 705, and the other set is a thread that cooperates with the telescopic sleeve 15. The transmission ratios of the two sets of threads are not equal, and a bearing is provided at one end of the thread that cooperates with the moving column 705. When the moving column 705 moves to a certain position, it will not move forward any further. A certain buffer zone is also provided between the front end of the thread that cooperates with the telescopic sleeve 15 and the rotating rod 11, thereby ensuring that the telescopic sleeve 15 will not move forward when the moving column 705 moves at the beginning. The dustproof shell 3 plays the role of protecting the sealing structure 9 and the clamping structure 8 to prevent external dust from entering. Secondly, the fixed rod 18 functions to limit the position of the spring 19 to prevent displacement during the movement. The above structure achieves that the positioning method is highly efficient, does not need to be highly dependent on manual operation experience, the process is simple, and the operation is simple. In terms of the sealing structure, the rubber sealing block 901 is used for combined sealing to ensure the test accuracy.

[0020] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. 1) An operating panel (13) is provided at the top, a dust cover (3) is provided at the top of the operating panel (13), a lifting mechanism (7) is provided at the bottom of the operating panel (13), the lifting mechanism (7) comprises a connecting rod (701), a rotating shaft (702), a fixed seat (703), a lifting plate (704) and a moving column (705), the connecting rod (701) is provided at the top of the fixed seat (703), the rotating shaft (702) is provided inside the connecting rod (701), the fixed seat (703) is provided at the top of the operating panel (13), the lifting plate (704) is provided at the top of the connecting rod (701), the moving column (705) is provided at the top of the fixed seat (703), a linear guide rail (12) is provided at the top of the linear guide rail (12), a placement shell (14) is provided at the top of the operating panel (13) A motor (10) is provided at the top end, and an output sleeve of the motor (10) is connected to a rotating rod (11), a telescopic sleeve (15) is provided at one end of the rotating rod (11), and a clamping mechanism (8) is provided at one end of the telescopic sleeve (15), and the clamping mechanism (8) comprises a first gear (801), a second gear (802) and a clamping block (803), the first gear (801) is provided at one end of a setting plate (804), the second gear (802) is provided at one end of the setting plate (804), the clamping block (803) is provided at the top end of the second gear (802), the setting plate (804) is provided inside an operating plate (13), one end of the setting plate (804) is movably connected to an arc plate (20), a mounting plate matched with the motor (10) is provided at the top end of the operating plate (13), and a control panel (2) is provided on the outside of the main body (1).

2. A ceramic fiber tube differential pressure testing mechanism according to claim 1, characterized in that: A sealing mechanism (9) is provided at one end of the arc plate (20), and the sealing mechanism (9) comprises a sealing block (901), a fixed ring (902), a rotating ring (903), and a fixed plate (904). The sealing block (901) is provided at one end of the fixed ring (902), the fixed ring (902) is provided at the top of the fixed plate (904), the rotating ring (903) is provided at one end of the arc plate (20), and the fixed plate (904) is provided at the top of the operating plate (13).

3. A ceramic fiber tube differential pressure testing mechanism according to claim 1, characterized in that: A push rod (16) is provided at the bottom end of the lifting plate (704), and the clamping block (803) and the second gear (802) are connected via a connecting rod.

4. A ceramic fiber tube differential pressure testing mechanism according to claim 1, characterized in that: A roller is provided between the setting plate (804) and the arc-shaped plate (20), and a rubber layer is provided on one side of the clamping block (803).

5. A ceramic fiber tube differential pressure testing mechanism according to claim 2, characterized in that: The sealing block (901) is fixed to one end of the locking block (905) by means of screws, and the rotating ring (903) and the sealing block (901) are connected by means of a connecting rod.

6. A ceramic fiber tube differential pressure testing mechanism according to claim 1, characterized in that: A sensor assembly plate (5) is provided at the top of the operating panel (13), a plurality of groups of silicone rollers are provided inside the placement shell (14), and an air duct (4) is provided on one side of the main body (1).

7. A ceramic fiber tube differential pressure testing mechanism according to claim 1, characterized in that: A threaded hole cooperating with the rotating rod (11) is provided inside the movable column (705), and a limiting frame cooperating with the connecting rod (701) is provided at the bottom end of the lifting plate (704).

8. A ceramic fiber tube differential pressure testing mechanism according to claim 1, characterized in that: A sliding limit plate is provided at the bottom end of the telescopic sleeve (15), and a sliding groove that matches the setting plate (804) is provided inside the arc-shaped plate (20).

9. A ceramic fiber tube differential pressure testing mechanism according to claim 3, characterized in that: A tooth plate (17) is provided inside the operating plate (13), and the tooth plate (17) corresponds to the push rod (16). A spring (19) is provided at one end of the tooth plate (17). A conical guide rail (6) that cooperates with the sealing mechanism (9) is provided at the top end of the operating plate (13).

10. A ceramic fiber tube differential pressure testing mechanism according to claim 9, characterized in that: A cavity cooperating with the tooth plate (17) is provided inside the operating plate (13), and a fixing rod (18) cooperating with the spring (19) is provided inside the operating plate (13).

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