High-temperature-resistant scintillation crystal detector for industrial CT

Abstract

The invention relates to the technical field of scintillation crystal detectors, in particular to a high-temperature-resistant scintillation crystal detector for industrial CT (computed tomography), which comprises a scintillation crystal detector main body. The fixing belt can be bound and fixed to the outer ring walls of scintillation crystal detectors of different models and different shapes, the installation positions between the damping support and the scintillation crystal detectors can be adjusted, air is sprayed out through the multiple exhaust rings, air is sucked in through the air suction rings, and the damping effect is good. Vibration reduction and buffering of the scintillation crystal detector are achieved through different air circulation rates, meanwhile, blowing combined type cleaning can be conducted on the surface of a scintillation crystal at the head of the scintillation crystal detector, and dust-carrying air or impurities sucked by an air suction ring can be collected through a collection box and collected in the collection box in a unified mode. Collected dust can be prevented from being discharged again, and the cleaning effect on the surface of the scintillation crystal is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of scintillation crystal detectors, and particularly to a high-temperature resistant scintillation crystal detector for industrial CT. Background Art

[0002] A scintillation crystal detector is an instrument that uses the flashes generated by ionizing radiation in certain substances (i.e., scintillators) for detection. When particles enter the scintillator, the atoms or molecules of the scintillator are excited to produce fluorescence. These fluorescences are directed onto the photosensitive layer of the photoelectric conversion device as much as possible through light collection components such as light guides and reflectors, and photoelectrons are ejected. These photoelectrons can be directly or multiplied and then collected by the output stage to form an electrical pulse, thereby achieving the detection of radiation.

[0003] To ensure that the scintillation crystal detector is placed stably and avoid vibration interference, the current practice is to use damping pads or rubber pads between the detector and the placement platform. These materials have good vibration absorption performance and can reduce vibration transmission, or use specially designed damping brackets to support the detector. The brackets should have sufficient rigidity and vibration absorption capacity;

[0004] However, both of the above two methods have inconveniences in use. Specifically, it refers to the inconvenient installation between the damping pad or the damping bracket and the scintillation crystal detector. This is because there are many types and specifications of scintillation crystal detectors, and only by using damping pads or damping brackets of the same model can the installation be ensured to be firm, and thus the damping effect can be ensured to be stable and reliable. Summary of the Invention

[0005] Aiming at the above-mentioned disadvantages of the prior art, the present invention provides a high-temperature resistant scintillation crystal detector for industrial CT, which can effectively solve the problems raised in the background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] The present invention provides a high-temperature resistant scintillation crystal detector for industrial CT, including a scintillation crystal detector main body. Two fixing seats are symmetrically and fixedly installed on the outer ring wall of the scintillation crystal detector main body. Two fixing belts are both attached to the outer ring wall of the scintillation crystal detector main body, and both ends are respectively wound in the two fixing seats. Two shaft cylinders are respectively arranged at the lower bottom of the corresponding fixing seats. The top of each shaft cylinder is slidably installed with a shaft rod that is vertically and fixedly connected to the corresponding fixing seat in a telescopic manner. The bottom of each shaft cylinder is elastically installed with a buffer base, and a piston piece that is slidably installed in the inner cavity of the corresponding shaft cylinder in a telescopic manner is installed on the top of each buffer base;

[0008] The exhaust ring lifting sliding sleeve is sleeved on the outer ring wall of the scintillation crystal detector main body. A plurality of exhaust heads that do not contact the outer ring wall of the scintillation crystal detector main body are installed on the inner ring wall of the exhaust ring. A plurality of the exhaust heads are respectively communicated with the inner cavities of the corresponding shaft cylinders through the exhaust ring and the corresponding shaft rods, and a one-way exhaust valve is installed at the communication position between the shaft rod and the inner cavity of the shaft cylinder. The intake ring is fixedly installed between the two shaft cylinders and sleeved on the scintillation crystal detector main body. A plurality of intake heads that do not contact the outer ring wall of the scintillation crystal detector main body are installed on the inner ring wall of the intake ring. A plurality of the intake heads are respectively communicated with the inner cavities of the two shaft cylinders through the intake ring, and a one-way intake valve is installed at the communication position between the intake ring and the inner cavity of the shaft cylinder. Both of the two collection components include collection boxes detachably installed in the inner barrel cavities of the corresponding shaft cylinders. The two collection boxes respectively collect the dust and impurities inhaled from the corresponding one-way intake valves.

[0009] Further, a worm and a worm gear that mesh with each other are rotatably installed in both of the two fixed seats. The center of the worm gear is fixedly installed with a rotating rod that is rotatably arranged in the inner cavity of the fixed seat. A first winding roller and a second winding roller that are parallel to the rotating rod are also rotatably installed in the fixed seat.

[0010] Further, the two ends of one of the fixed belts are respectively wound and fixed on the outer roller walls of the corresponding first winding rollers, and the two ends of the other fixed belt are respectively wound and fixed on the outer roller walls of the corresponding second winding rollers. First transmission wheels are fixedly sleeved at the bottoms of the rotating rod and the first winding roller. A first transmission belt is jointly wound around the two first transmission wheels.

[0011] Further, two second transmission wheels are rotatably installed at the top of the upper cavity of the inner cavity of the fixed seat. One of the second transmission wheels is fixedly sleeved on the outer roller wall of the rotating rod. A second transmission belt is jointly wound around the two second transmission wheels.

[0012] Further, gears are fixedly installed at the tops of the second winding roller and the second transmission wheel that is not sleeved on the outer rod wall of the rotating rod. The two gears mesh with each other. Knobs are rotatably installed at the same-direction ends of the two fixed seats. The two knobs are respectively fixedly connected to one ends of the corresponding worms.

[0013] Further, shaft cavities are opened at the tops of the two shaft cylinders. The two shaft rods are respectively slidably inserted into the corresponding shaft cavities in a matching manner. Extrusion screws are threadedly installed on the outer side walls of the two shaft cylinders. The two extrusion screws respectively abut against the corresponding shaft rods.

[0014] Further, two buffer springs are installed between the tops of the two buffer bases and the lower bottoms of the corresponding shaft cylinders. The tops of the two buffer bases are vertically and fixedly connected to two telescopic rods respectively. One ends of the two telescopic rods away from the buffer bases respectively penetrate through the corresponding buffer springs and extend into the shaft cavities, and two piston sheets are vertically and fixedly installed.

[0015] Further, two exhaust pipes are communicated with the top of the exhaust ring. The tops of the two exhaust pipes are slidably sleeved with exhaust cylinders respectively. The two exhaust cylinders are respectively connected to the corresponding shaft rods. Cavities are respectively formed through the tops and bottoms of the two shaft rods. The one-way exhaust valve is embedded and installed at the bottom of the cavity. The exhaust cylinder is communicated with the shaft cavity through the cavity.

[0016] Further, a notch is formed in the outer cylinder wall of the shaft cylinder through the shaft cavity, and the one-way intake valve is respectively embedded and fixedly installed in the notch.

[0017] Further, the collection box is slidably installed in the shaft cavity. A feed port opposite to the position of the notch is formed in one side of the collection box. Filter nets are respectively embedded and installed through the feed port on the upper top and the lower bottom of the collection box. A handle is vertically and fixedly installed at one end of the collection box.

[0018] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art:

[0019] 1. The damping bracket designed by the present invention is fixed on the scintillation crystal detector by a fixing belt. Since the fixing belt can adjust the effective length of the exposed part by winding or releasing, it can be bundled and fixed on the outer ring walls of different models and different shapes of scintillation crystal detectors, and can also adjust the installation position between the damping bracket and the scintillation crystal detector, so as to make reasonable use of the damping bracket.

[0020] 2. Moreover, the damping bracket designed by the present invention is also equipped with an exhaust ring and an air extraction ring. A number of exhaust heads and intake heads are respectively installed in the exhaust ring and the air extraction ring. Through the control of relevant air paths and one-way valves, finally, during the reciprocating vibration of the damping spring, air is ejected through a number of exhaust rings and air is inhaled through the air extraction ring. The damping and buffering of the scintillation crystal detector are realized by using the different air flow rates. At the same time, the surface of the scintillation crystal at the head of the scintillation crystal detector can be blown and cleaned in a combined manner. And this cleaning method uses air flow blowing and does not contact the surface of the scintillation crystal, so as to avoid scratching or damaging the crystal surface.

[0021] 3. A collection box is also detachably installed on the path where the air extraction ring is internally connected to the shock absorption bracket. Through the collection box, the air or impurities with dust extracted by the air extraction ring can be collected, and uniformly collected in the collection box. Moreover, through the design of the filter screen and the one-way air inlet and exhaust valve, the collected dust can be prevented from being discharged again, further improving the cleaning effect on the surface of the scintillation crystal. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the overall first perspective of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the overall second perspective of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the interior of the fixing base of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the synchronous reverse rotation of two winding rollers of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the installation of the exhaust ring and the air extraction ring of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the installation of the shaft cylinder, the shaft rod and the buffer base of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the installation of the piston sheet and the collection assembly inside the shaft cylinder of the present invention;

[0030] Figure 8 It is a schematic structural diagram of the collection assembly of the present invention.

[0031] The reference numerals in the drawings respectively represent:

[0032] 1. Scintillation crystal detector main body;

[0033] 2. Fixing base; 21. Worm; 22. Worm gear; 23. Rotating rod; 24. First winding roller; 25. First driving wheel; 26. First driving belt; 27. Second driving wheel; 28. Second driving belt; 29. Second winding roller; 210. Gear; 211. Knob;

[0034] 3. Fixing belt;

[0035] 4. Shaft cylinder; 41. Shaft rod; 42. Screw; 43. Buffer base; 44. Buffer spring; 45. Telescopic rod; 46. Piston piece;

[0036] 5. Exhaust ring; 51. Exhaust head; 52. Exhaust pipe; 53. Exhaust cylinder; 54. One-way exhaust valve;

[0037] 6. Intake ring; 61. Intake head; 62. One-way intake valve;

[0038] 71. Collection box; 72. Filter screen; 73. Handle. Specific embodiments

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] The present invention will be further described below with reference to the embodiments.

[0041] Embodiment 1:

[0042] Referring to Figure 1-8 , which is the first embodiment of the present invention, a high-temperature resistant scintillation crystal detector for industrial CT, including a scintillation crystal detector main body 1. This scintillation crystal detector main body 1 is a high-temperature resistant scintillation crystal detector, and its working principle is based on the luminescence characteristics of the scintillation crystal and the photoelectric conversion characteristics of the photomultiplier tube. When the scintillation crystal receives radiation signals such as X-rays, γ-rays, particles, etc., the atoms or molecules inside the crystal will be excited, and then light pulses will be emitted. These light pulses are then received by the photomultiplier tube, and after photoelectric conversion and signal amplification, they are converted into electrical signals for output;

[0043] Two fixing seats 2 are symmetrically fixed on the outer ring wall of the scintillation crystal detector main body 1. Two fixing belts 3 are both attached to the outer ring wall of the scintillation crystal detector main body 1, and both ends are respectively wound inside the two fixing seats 2. The contact part between the fixing seat 2 and the scintillation crystal detector main body 1 is made of silica gel material, and the contact area is increased by deformation to avoid scratching the surface of the scintillation crystal detector main body 1 due to excessive extrusion;

[0044] Two shaft cylinders 4 are respectively arranged at the lower bottom of the corresponding fixed seats 2. Shaft rods 41 vertically and fixedly connected to the corresponding fixed seats 2 are telescopically and slidably installed at the tops of the shaft cylinders 4 in a matching manner. Buffer bases 43 are elastically installed at the bottoms of the shaft cylinders 4. Piston sheets 46 are installed at the tops of the buffer bases 43 and are telescopically and slidably installed in the inner cavities of the corresponding shaft cylinders 4 in a matching manner. The piston sheets 46 are square sheet-like structures, and there is no gap between the piston sheets 46 and the shaft cavities, so there will be no problem of air leakage. The exhaust ring 5 is sleeved on the outer wall of the scintillation crystal detector main body 1 in a lifting and sliding manner. A plurality of exhaust heads 51 that do not contact the outer wall of the scintillation crystal detector main body 1 are installed on the inner wall of the exhaust ring 5. The plurality of exhaust heads 51 are slightly inclined, and the dust and impurities on the surface of the scintillation crystal detector main body 1 are blown downward. The plurality of exhaust heads 51 are all communicated with the inner cavity of the corresponding shaft cylinder 4 through the exhaust ring 5 and the corresponding shaft rod 41, and a one-way exhaust valve 54 is installed at the communication position between the shaft rod 41 and the inner cavity of the shaft cylinder 4;

[0045] The intake ring 6 is fixedly installed between the two shaft cylinders 4 and is sleeved on the scintillation crystal detector main body 1. A plurality of intake heads 61 that do not contact the outer wall of the scintillation crystal detector main body 1 are installed on the inner wall of the intake ring 6. The plurality of intake heads 61 are slightly inclined to extract the dust and impurities blown by the plurality of exhaust heads 51. The plurality of intake heads 61 are all communicated with the inner cavities of the two shaft cylinders 4 through the intake ring 6, and one-way intake valves 62 are installed at the communication positions between the intake ring 6 and the inner cavities of the shaft cylinders 4. Both collecting assemblies include collecting boxes 71 detachably installed in the inner barrel cavities of the corresponding shaft cylinders 4. The two collecting boxes 71 respectively collect the dust and impurities inhaled from the corresponding one-way intake valves 62.

[0046] Embodiment 2:

[0047] Refer to Figure 1-4 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a worm 21 and a worm gear 22 that mesh with each other are rotatably installed in both fixed seats 2. A rotating rod 23 rotatably arranged in the inner cavity of the fixed seat 2 is fixedly installed through the center of the worm gear 22. A first winding roller 24 and a second winding roller 29 parallel to the rotating rod 23 are also rotatably installed in the fixed seat 2. The two ends of one fixing belt 3 are respectively wound and fixed on the outer roller walls of the corresponding first winding roller 24, and the two ends of the other fixing belt 3 are respectively wound and fixed on the outer roller walls of the corresponding second winding roller 29. First transmission wheels 25 are fixedly sleeved at the bottoms of the rotating rod 23 and the first winding roller 24, and a first transmission belt 26 is commonly wound around the two first transmission wheels 25;

[0048] At the top of the upper cavity of the fixed seat 2, two second driving wheels 27 are rotatably installed. One of the second driving wheels 27 is fixedly sleeved on the outer roller wall of the rotating rod 23. A second driving belt 28 is jointly wound around the two second driving wheels 27. At the top of the second winding roller 29 and the second driving wheel 27 that is not sleeved on the outer rod wall of the rotating rod 23, gears 210 are fixedly installed. The two gears 210 mesh with each other. Through the design of the gears 210, when the knob 211 is rotated, the two winding rollers are finally driven to rotate in opposite directions, and the fixing belts 3 can be wound or released simultaneously, thereby improving the bundling and fixing efficiency of the fixing belts 3. At the same end of the two fixed seats 2 in the same direction, knobs 211 are rotatably installed, and the two knobs 211 are respectively fixedly connected to one end of the corresponding worm 21.

[0049] The rest of the structure is the same as that of Embodiment 1.

[0050] Embodiment 3:

[0051] Referring to Figure 5-7 , this is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: at the top of the two shaft cylinders 4, shaft cavities are provided. The two shaft rods 41 are respectively slidably inserted into the corresponding shaft cavities in a matching manner. On the outer side walls of the two shaft cylinders 4, extrusion screws 42 are threadedly installed. The two extrusion screws 42 respectively abut against the corresponding shaft rods 41. The extrusion screw 42 is a combination of a transmission screw structure and an extrusion piece. The extrusion piece is installed at the head of the traditional screw structure. By rotating the thread of the extrusion screw 42, the extrusion piece is driven to perform a spiral telescopic movement, and finally it abuts against the shaft rod 41;

[0052] Between the top ends of the two buffer bases 43 and the lower bottoms of the corresponding shaft cylinders 4, two buffer springs 44 are installed. The buffer springs 44 do not have a vibration damping effect, but can absorb vibration energy and feedback it to the telescopic rods 45. At the top ends of the two buffer bases 43, two telescopic rods 45 are vertically and fixedly connected. The ends of the two telescopic rods 45 away from the buffer bases 43 respectively penetrate through the corresponding buffer springs 44 and extend into the shaft cavities and vertically fixedly install two piston sheets 46.

[0053] The rest of the structure is the same as that of Embodiment 2.

[0054] Embodiment 4:

[0055] Referring to Figure 5-8, which is the fourth embodiment of the present invention. The difference between this embodiment and the third embodiment is that: two exhaust pipes 52 are connected to the top of the exhaust ring 5. Exhaust cylinders 53 are slidably sleeved on the tops of the two exhaust pipes 52. The exhaust cylinders 53 are always sleeved on the outer pipe wall of the exhaust pipes 52. Along with the telescopic sliding adjustment of the shaft rod 41 and the shaft cylinder 4, the relative insertion depth of the exhaust cylinders 53 and the exhaust pipes 52 is also adjusted synchronously by sliding, but the communication relationship is always maintained. The two exhaust cylinders 53 are respectively connected to the corresponding shaft rods 41. Cavities are formed through the tops and bottoms of the two shaft rods 41. The one-way exhaust valves 54 are embedded and installed at the bottoms of the cavities. The exhaust cylinders 53 are communicated with the shaft cavity through the cavities;

[0056] Notches are formed through the outer cylinder wall of the shaft cylinder 4 and penetrate the shaft cavity. The one-way intake valves 62 are respectively embedded and fixedly installed in the notches. The collection box 71 is slidably installed in the shaft cavity. A feed port opposite to the position of the notch is formed on one side of the collection box 71. Filter meshes 72 are embedded and installed through the upper top and the lower bottom of the collection box 71 and penetrate the feed port. The filter mesh 72 located above can prevent the dust and impurities in the collection box 71 from being discharged through the one-way exhaust valve 54 along with the airflow. The filter mesh 72 located below can keep the air between the piston piece 46 and the collection box 71 in communication with the inner cavity of the collection box 71. A handle 73 is vertically and fixedly installed at one end of the collection box 71.

[0057] The remaining structures are the same as those of Embodiment 3.

[0058] The working principle of the present invention:

[0059] First step, first connect the scintillation crystal detector main body 1 with the terminal computer data, and sleeve the two fixing belts 3 on the outer ring wall of the scintillation crystal detector main body 1. At this time, since the fixing belts 3 have not been adjusted yet, they can be rotated up, down, left, and right on the surface of the scintillation crystal detector main body 1 to adjust the final bundling and fixing position. When the position of the fixing belts 3 is determined, rotate the two knobs 211 at the same time, thereby driving the worm 21 to rotate, which in turn drives the worm gear 22 to rotate meshingly, and also synchronously drives the first transmission wheel 25 and the second transmission wheel 27 to rotate. Through the transmission of the first transmission belt 26, drive the first winding roller 24 to rotate. Through the second transmission belt 28 and the meshing of the two gears 210, synchronously drive the second winding roller 29 to rotate in the reverse direction, and start to wind the fixing belts 3, so that the exposed length of the fixing belts 3 is shortened, and finally the fixing belts 3 are attached and bundled and fixed on the outer ring wall of the scintillation crystal detector main body 1;

[0060] In the second step, loosen the two screws 42 respectively, so that the shaft rod 41 and the shaft cylinder 4 can slide telescopically to adjust the relative insertion depth. At this time, the relative insertion depth between the exhaust pipe 52 and the exhaust cylinder 53 is also adjusted synchronously. At this time, the positions of the exhaust ring 5 and the intake ring 6 sleeved around the scintillation crystal detector body 1 are also adjusted to ensure that the exhaust ring 5 and the intake ring 6 are sleeved on the scintillation crystal part of the scintillation crystal detector body 1 that is prone to contamination. Finally, tighten the screws 42 respectively, and the extrusion heads of the screws 42 respectively press against the shaft rod 41 to complete the relative fixation of the shaft rod 41 and the shaft cylinder 4;

[0061] In the third step, during the use of the scintillation crystal detector body 1, it may shake due to contact and collision, thus affecting the normal operation of the scintillation crystal detector body 1. At this time, the buffer spring 44 between the buffer base 43 and the shaft cylinder 4 is forced to absorb the vibration energy, so as to drive the piston piece 46 to slide telescopically in the shaft cavity through the telescopic rod 45, thereby starting to squeeze the shaft cavity space. At this time, the excess air in the shaft cavity cannot be discharged into the intake ring 6 through the one-way intake valve 62, but will be discharged into the cavity in the shaft rod 41 through the one-way exhaust valve 54;

[0062] And it finally enters the exhaust ring 5 through the exhaust cylinder 53 and the exhaust pipe 52 and is ejected through the exhaust head 51. Since the speed of the piston piece 46 squeezing the shaft cavity is greater than the speed of the exhaust head 51 discharging air, the buffer and vibration reduction of the scintillation crystal detector body 1 are realized through the above pneumatic method. The air discharged from several exhaust heads 51 will form an air column and impact on the scintillation crystal on the surface of the scintillation crystal detector body 1, blowing away the dust and impurities on the surface of the scintillation crystal;

[0063] In the fourth step, after the piston piece 46 is squeezed, the corresponding buffer spring 44 will be forced to elastically deform axially along the corresponding telescopic rod 45. Therefore, the elastic recovery of the buffer spring 44 will automatically pull the piston piece 46 downward to reset and restore the original internal space in the shaft cavity. During this process, since the effective filling space inside the shaft cavity increases, the pressure will decrease, thus being forced to extract the outside air. However, since the one-way exhaust valve 54 can only exhaust and cannot intake air, only the air from the intake ring 6, that is, from several intake heads 61, can be extracted through the one-way intake valve 62. Since the repeated vibration process of the piston piece 46 is relatively rapid, the dust and impurities on the surface of the just-blown scintillation crystal will be attracted by the intake heads 61 at this time and finally enter the shaft cavity through the one-way intake valve 62;

[0064] Step 5. However, since the collection box 71 is just located at the position of the one-way intake valve 62, the air with dust and impurities entering the shaft cavity needs to pass through the collection box 71 and enter the shaft cavity. The dust and impurities will be filtered and intercepted when passing through the two filter meshes 72 on the collection box 71, and thus remain in the collection box 71. Even when the piston piece 46 receives vibration and squeezes the shaft cavity upward next time, the dust and impurities will be intercepted on the filter meshes 72, and the collection box 71 can be taken out regularly through the handle 73 for cleaning.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high temperature resistant scintillation crystal detector for industrial CT, comprising a scintillation crystal detector body (1), characterized in that: Also includes: Two fixing seats (2) are fixedly mounted on the outer ring wall of the scintillation crystal detector body (1) in a centrally symmetrical manner; Two fixing belts (3) are both attached to the outer ring wall of the scintillation crystal detector body (1), and the two ends are respectively wound in the two fixing seats (2); Two shaft cylinders (4) are respectively arranged at the bottom of the corresponding fixed seat (2), and the top of each shaft cylinder (4) is adapted to be telescopically slidably mounted with a shaft rod (41) vertically fixedly connected to the corresponding fixed seat (2), and the bottom of each shaft cylinder (4) is elastically mounted with a buffer base (43), and the top of each buffer base (43) is equipped with a piston plate (46) adapted to be telescopically slidably mounted in the inner cavity of the corresponding shaft cylinder (4); An exhaust ring (5) is raised and lowered and slidably sleeved on the outer ring wall of the scintillation crystal detector body (1); the inner ring wall of the exhaust ring (5) is provided with a plurality of exhaust heads (51) which do not contact the outer ring wall of the scintillation crystal detector body (1); the plurality of exhaust heads (51) are connected to the inner cavity of the corresponding shaft cylinder (4) through the exhaust ring (5) and the corresponding shaft rod (41); and a one-way exhaust valve (54) is installed at the connection point between the shaft rod (41) and the inner cavity of the shaft cylinder (4); An air intake ring (6) is fixedly mounted between the two shaft cylinders (4) and sleeved on the scintillation crystal detector body (1); the inner ring wall of the air intake ring (6) is mounted with a plurality of air intake heads (61) that do not contact the outer ring wall of the scintillation crystal detector body (1); the plurality of air intake heads (61) are connected to the inner cavities of the two shaft cylinders (4) through the air intake ring (6); and a one-way air intake valve (62) is mounted at the connection point between the air intake ring (6) and the inner cavity of the shaft cylinder (4); The two collecting assemblies each comprise a collecting box (71) detachably mounted in the inner cylinder cavity of the corresponding shaft cylinder (4), and the two collecting boxes (71) respectively collect dust and impurities sucked in from the corresponding one-way air inlet valve (62).

2. The high temperature resistant scintillation crystal detector for industrial CT according to claim 1, characterized in that: A worm (21) and a worm wheel (22) meshing with each other are rotatably mounted in the two fixed seats (2); a rotating rod (23) rotatably arranged in the inner cavity of the fixed seat (2) is fixedly mounted through the center of the worm wheel (22); and a first winding roller (24) and a second winding roller (29) rotatably mounted in the fixed seat (2) and distributed in parallel with the rotating rod (23).

3. The high temperature resistant scintillation crystal detector for industrial CT according to claim 2, characterized in that: The two ends of one of the fixed belts (3) are respectively wound and fixed on the outer roller wall of the corresponding first winding roller (24), and the two ends of the other fixed belt (3) are respectively wound and fixed on the outer roller wall of the corresponding second winding roller (29). The bottom of the rotating rod (23) and the first winding roller (24) are both fixedly mounted with a first transmission wheel (25), and a first transmission belt (26) is commonly mounted around the two first transmission wheels (25).

4. The high temperature resistant scintillation crystal detector for industrial CT according to claim 3, characterized in that: Two second transmission wheels (27) are rotatably mounted at the top of the inner cavity of the fixed seat (2), one of the second transmission wheels (27) is fixedly sleeved on the outer roller wall of the rotating rod (23), and a second transmission belt (28) is sleeved around the two second transmission wheels (27).

5. The high temperature resistant scintillation crystal detector for industrial CT according to claim 4, characterized in that: The second winding roller (29) and the second transmission wheel (27) not mounted on the outer rod wall of the rotating rod (23) are both fixedly mounted with gears (210), the two gears (210) are meshed with each other, and knobs (211) are rotatably mounted on the same end of the two fixed seats (2), and the two knobs (211) are respectively fixedly connected to one end of the corresponding worm (21).

6. The high temperature resistant scintillation crystal detector for industrial CT according to claim 1, characterized in that: The tops of the two shaft cylinders (4) are each provided with a shaft cavity, and the two shaft rods (41) are respectively slidably inserted into the corresponding shaft cavities in a matching manner. The outer walls of the two shaft cylinders (4) are both threadedly mounted with extrusion screws (42), and the two extrusion screws (42) are respectively pressed and abutted against the corresponding shaft rods (41).

7. The high temperature resistant scintillation crystal detector for industrial CT according to claim 1, characterized in that: Two buffer springs (44) are installed between the top ends of the two buffer bases (43) and the lower bottoms of the corresponding shaft tubes (4); the top ends of the two buffer bases (43) are vertically fixedly connected to two telescopic rods (45); the ends of the two telescopic rods (45) away from the buffer bases (43) respectively penetrate the corresponding buffer springs (44) and extend into the shaft cavity and vertically fixedly install two piston plates (46).

8. The high temperature resistant scintillation crystal detector for industrial CT according to claim 6, characterized in that: The top of the exhaust ring (5) is connected to two exhaust pipes (52), and the tops of the two exhaust pipes (52) are slidably mounted with exhaust cylinders (53). The two exhaust cylinders (53) are respectively connected to corresponding shaft rods (41). The tops and bottoms of the two shaft rods (41) are penetrated by cavities, and the one-way exhaust valve (54) is embedded in the bottom of the cavity. The exhaust cylinder (53) is connected to the shaft cavity through the cavity.

9. The high temperature resistant scintillation crystal detector for industrial CT according to claim 6, characterized in that: The outer wall of the shaft cylinder (4) is provided with slots penetrating through the shaft cavity, and the one-way air intake valves (62) are respectively embedded and fixedly installed in the slots.

10. The high temperature resistant scintillation crystal detector for industrial CT according to claim 9, characterized in that: The collecting box (71) is slidably mounted in the shaft cavity, a feed port is provided on one side of the collecting box (71) and is opposite to the slot, a filter screen (72) is embedded and mounted on the top and bottom of the collecting box (71) through the feed port, and a handle (73) is vertically fixedly mounted on one end of the collecting box (71).

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