Imaging scanning calibration device and method

Abstract

The invention relates to the technical field of scanning imaging device calibration, in particular to an imaging scanning calibration device and method.The imaging scanning calibration device comprises a closed liquid storage cylinder, and a threaded through hole is formed in the middle of a top plate of the liquid storage cylinder; the adjusting mechanism is arranged in the liquid storage barrel and comprises a fixed sleeve fixedly arranged at the bottom of a top plate of the liquid storage barrel, a movable sleeve connected to the outer side of the fixed sleeve in a sleeving mode and an adjusting disc coaxially arranged below the movable sleeve, the fixed sleeve is coaxially arranged on the outer side of the threaded through hole, and a plurality of matching lugs are fixedly arranged at the lower end of the outer side wall of the movable sleeve in the circumferential direction in an array mode; a plurality of driving columns matched with the matching lugs are fixedly arranged on the top face of the adjusting disc, the driving columns drive the movable sleeve to rotate relative to the fixed sleeve through rotation of the adjusting disc so as to complete opening and closing of the circulation hole between the fixed sleeve and the movable sleeve, and the calibration device can effectively prevent generated bubbles from affecting detection data and improve the detection accuracy. The overall operation is convenient, the richness of the acquired data is high, and the calibration of the scanning imaging device is effectively realized.

Description

Technical Field

[0001] The present invention relates to the technical field of calibration of scanning imaging devices, and in particular to an imaging scanning calibration device and method. Background Art

[0002] A CT device is a common medical scanning imaging device. Before leaving the factory and after long-term use, the CT device needs to be calibrated and tested to ensure that the CT value of the CT device remains accurate. In the existing calibration process of the CT device, calibration is mainly carried out through a water phantom. During operation, the water phantom is first filled with water, and calibration is carried out using water as a reference substance, with a range between -1000 and +1000 HU. When in use, the water phantom is perpendicular to the beam, so as to obtain accurate CT value measurement results. For example, the existing public literature CN118614947A - A CT Water Phantom and Its Preparation Method and the existing public literature CN209136650U - A CT Value Water Phantom both disclose a water phantom for calibrating a CT device. Although the above existing water phantoms can achieve the calibration of the CT device, the existing water phantoms still have the following deficiencies in actual use: 1. When the existing water phantom is filled with water, water is injected through the injection hole and air in the water phantom is discharged through another exhaust hole. Although this method can achieve water injection into the water phantom, there is still a certain amount of air (bubbles) in the water after the water injection is completed, which affects subsequent calibration. At the same time, the water itself also contains a certain amount of air, increasing the possibility of air generation. 2. When the existing water phantom is in use, generally the water phantom is set as a whole cylindrical shape. This design method is inconvenient for replacing the water in the water phantom on the one hand (as time goes by, the CT value detected by the water will also change), and on the other hand, the data collected during calibration is relatively single, with the deficiency of weak richness. Therefore, it is necessary to improve the existing technology to solve the above technical problems. Summary of the Invention

[0003] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the specification of this application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the problem that the existing water phantom for calibrating an imaging scanning device is prone to air bubbles in actual use and affects calibration data, an imaging scanning calibration device is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solution: An imaging scanning calibration device, comprising a liquid storage cylinder that is enclosed, a threaded through hole is provided in the middle of the top plate of the liquid storage cylinder, and a liquid discharge groove is provided on the top plate of the liquid storage cylinder on one side of the threaded through hole; an adjustment mechanism provided inside the liquid storage cylinder, including a fixed sleeve fixed to the bottom of the top plate of the liquid storage cylinder, a movable sleeve sleeved outside the fixed sleeve, and an adjustment disc coaxially arranged below the movable sleeve. The fixed sleeve is coaxially arranged outside the threaded through hole. A plurality of cooperating ears are fixedly arranged along the circumferential direction at the lower end position of the outer side wall of the movable sleeve. A plurality of driving columns respectively cooperating with each cooperating ear are fixedly arranged on the top surface of the adjustment disc. By rotating the adjustment disc, the driving columns are used to drive the movable sleeve to rotate relative to the fixed sleeve to complete the opening and closing of the flow hole between the fixed sleeve and the movable sleeve; and a liquid discharge head that is in clearance fit with the liquid discharge groove on the top plate of the liquid storage cylinder.

[0006] The beneficial effect of the present invention is that when this calibration device is in use, the opening and closing of the flow hole between the fixed sleeve and the movable sleeve is realized by the rotation of the movable sleeve relative to the fixed sleeve. Before injecting water, the inside of the liquid storage cylinder can be evacuated by a vacuum pump first, so as to achieve the exhaust of air before injecting water. After evacuation, water is injected into the liquid storage cylinder. Such a design method can effectively avoid the energy loss caused by air in the liquid storage cylinder after water injection. At the same time, injecting water in a vacuum state can also reduce the dissolved amount of air in the water and reduce the possibility of bubbles existing after water injection.

[0007] As a preferred scheme of an imaging scanning calibration device of the present invention, wherein: a cooperating column is coaxially fixed to the bottom surface of the adjustment disc, and the cooperating column slidably penetrates through the bottom plate of the liquid storage cylinder, and an internal hexagonal groove is provided on the bottom surface of the cooperating column.

[0008] As a preferred scheme of an imaging scanning calibration device of the present invention, wherein: a sealing ring is fixedly sleeved on the outer side wall of the cooperating column, and an oil seal groove is provided along the circumferential direction on the outer side wall of the sealing ring. A first sealing groove for clearance fit of the sealing ring is provided on the bottom plate of the liquid storage cylinder; a second sealing groove is provided along the circumferential direction on the top surface of the movable sleeve, and a sealing ring is in interference fit in the second sealing groove.

[0009] As a preferred scheme of an imaging scanning calibration device of the present invention, wherein: the driving column is slidably sleeved in the cooperating ear, an external thread is provided on the outer side wall of the fixed sleeve, and an internal thread that is helically matched with the external thread is provided on the inner wall of the movable sleeve.

[0010] As a preferred scheme of an imaging scanning calibration device of the present invention, wherein: the lower end of the fixed sleeve is enclosed, while the lower end of the movable sleeve is open, and a plurality of first through holes are provided along the circumferential direction on the side wall of the fixed sleeve.

[0011] As a preferred embodiment of an imaging scan calibration device of the present invention, the following is provided: the lower end of the fixed sleeve is open, while the lower end of the movable sleeve is closed. Second through holes are circumferentially and arrayedly formed on the side wall of the movable sleeve.

[0012] As a preferred embodiment of an imaging scan calibration device of the present invention, the following is provided: the upper end of the driving column is fixedly connected to the mating ear. First through slots are circumferentially and arrayedly formed on the side wall of the fixed sleeve, and second through slots are circumferentially and arrayedly formed on the side wall of the movable sleeve. The first through slots are located inside the rotation trajectory plane of the second through slots; the lower ends of both the fixed sleeve and the movable sleeve are closed; on the outer side wall of the mating column below the liquid storage cylinder, a fixed ear is fixedly provided, and a locking bolt is spirally sleeved on the fixed ear, and the upper end of the locking bolt abuts against the bottom surface of the liquid storage cylinder.

[0013] As a preferred embodiment of an imaging scan calibration device of the present invention, the following is provided: the vertical cross-section of the drain groove is integrally formed by an isosceles trapezoid, a rectangle located at the upper end of the isosceles trapezoid, and a convex shape located below the isosceles trapezoid. A plurality of drain holes are circumferentially and arrayedly formed on the inclined surface of the isosceles trapezoid; the drain head includes an upper plug and a lower plug fixedly connected to the lower end of the upper plug. The upper plug is used for clearance fit at the connection position of the isosceles trapezoid and the rectangle, and the lower plug is used for clearance fit at the convex position.

[0014] In view of the problems that the existing water phantom has a large difficulty in replacing water and a low richness of the collected data, the imaging scan calibration device of the present invention is further preferably improved. The following is provided: a plurality of convex columns are circumferentially and fixedly provided on the bottom surface of the liquid storage cylinder, and a plurality of locking grooves that are respectively engaged with the plurality of convex columns are circumferentially formed on the top surface of the liquid storage cylinder.

[0015] Another beneficial effect of the present invention is as follows: when the calibration device is in use, a plurality of liquid storage cylinders are used in cooperation to replace the traditional integrated cylindrical design. In actual use, when the mass of water in a certain liquid storage cylinder does not meet the standard, the staff can quickly replace it by replacing the liquid storage cylinder, thereby reducing the calibration complexity. At the same time, through the stacking of a plurality of liquid storage cylinders and injecting liquids with other densities into the liquid storage cylinders in this device, the collected data can be made more abundant, and the accuracy of the calibration data can be improved.

[0016] In addition, the present invention also provides the following technical solution: a method for using an imaging scan calibration device. The above-mentioned imaging scan calibration device is operated and used according to the following steps; S1: Rotate the movable sleeve through the adjustment disk to open the flow hole between the movable sleeve and the fixed sleeve. Then, one end of the delivery pipe of the vacuum pump is spirally fitted on the threaded through hole, and the vacuum pump performs a vacuum operation on the inside of the liquid storage cylinder. S2: After the vacuuming is completed, rotate the adjustment disk to close the flow hole between the movable sleeve and the fixed sleeve. S3: After evacuating multiple liquid storage cylinders, screw one end of the water delivery pipe of the water source onto the threaded through-hole, rotate the adjustment disc to open the flow hole between the movable sleeve and the fixed sleeve, and inject water into the liquid storage cylinder; S4: After filling with water, rotate the adjustment disc to close the flow hole between the movable sleeve and the fixed sleeve; S5: After all the liquid storage cylinders are filled with water, place the liquid storage cylinders in the imaging scanning device in a stacked manner to complete the calibration of the imaging scanning device. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them: Figure 1 It is a schematic diagram of the overall structure of an imaging scanning calibration device in Embodiment 1 of the present invention.

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the bottom of the structure.

[0019] Figure 3 For the present invention Figure 1 Vertical sectional view of the structure.

[0020] Figure 4 It is a schematic diagram of the overall state and exploded state of the adjustment mechanism in Embodiment 1 of the present invention.

[0021] Figure 5 It is a schematic diagram of the overall state and exploded state of the adjustment mechanism in Embodiment 2 of the present invention.

[0022] Figure 6 It is a schematic diagram of the overall state and exploded state of the adjustment mechanism in Embodiment 3 of the present invention.

[0023] Figure 7 It is a schematic diagram of the bottom of the adjustment mechanism in Embodiment 3 of the present invention.

[0024] Figure 8 It is a diagram of the parts to be fitted of the liquid discharge tank and the liquid discharge head in the present invention. Detailed Embodiments

[0025] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings of the specification.

[0026] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments.

[0028] Thirdly, the present invention is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be locally enlarged out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included. Embodiment 1

[0029] Referring to Figure 1 、 Figure 2 and Figure 3 , this is the first embodiment of the present invention. This embodiment provides an imaging scanning calibration device. When this calibration device is in use, water is injected into the liquid storage cylinder 100 through the adjusting mechanism 200. Then, the calibrated device filled with water is placed at a position perpendicular to the beam, and then scanned by a CT device to detect the CT finger, thereby realizing the calibration of the CT device.

[0030] Specifically, it includes a liquid storage cylinder 100 that is enclosed. A threaded through-hole 101 is provided in the middle of the top plate of the liquid storage cylinder 100, and the threaded through-hole 101 is used for spiral cooperation with one end of a vacuum extraction tube and a water pipe; an adjusting mechanism 200 arranged inside the liquid storage cylinder 100, including a fixed sleeve 201 fixed to the bottom of the top plate of the liquid storage cylinder 100, a movable sleeve 202 sleeved outside the fixed sleeve 201, and an adjusting disc 203 coaxially arranged below the movable sleeve 202. The fixed sleeve 201 is coaxially arranged outside the threaded through-hole 101, and a liquid discharge head 300.

[0031] For details, refer to Figure 3 and Figure 4As shown, a plurality of mating ears 202a are fixedly arranged in a circumferential array at the lower end position of the outer side wall of the movable sleeve 202. A plurality of driving columns 203a respectively mating with each mating ear 202a are fixedly arranged on the top surface of the adjusting disc 203. By rotating the adjusting disc 203, the driving column 203a is driven to rotate the movable sleeve 202 relative to the fixed sleeve 201, so as to complete the opening and closing of the flow hole between the fixed sleeve 201 and the movable sleeve 202. A second sealing groove 202b-1 is circumferentially formed on the top surface of the movable sleeve 202, and a sealing ring 202b is in interference fit in the second sealing groove 202b-1, thereby improving the sealing performance of the fit between the movable sleeve 202 and the liquid storage cylinder 100; Preferably, the driving column 203a is slidably sleeved in the mating ear 202a. An external thread 201a is formed on the outer side wall of the fixed sleeve 201, and at the same time, an internal thread 202c helically mating with the external thread 201a is formed on the inner wall of the movable sleeve 202; the lower end of the fixed sleeve 201 is closed, while the lower end of the movable sleeve 202 is open. A plurality of first through holes 201b are circumferentially arranged on the side wall of the fixed sleeve 201; A mating column 203c is coaxially fixedly arranged on the bottom surface of the adjusting disc 203, and the mating column 203c slidably penetrates through the bottom plate of the liquid storage cylinder 100. An internal hexagonal groove 203c-1 is formed on the bottom surface of the mating column 203c. A sealing ring 203b is sleeved on the outer side wall of the mating column 203c and fixedly connected to the fixed sleeve 201. An oil seal groove 203b-1 is circumferentially formed on the outer side wall of the sealing ring 203b, and sealing oil is filled in the oil seal groove 203b-1, thereby improving the sealing performance of the fit with the liquid storage cylinder 100. A first sealing groove 105 for clearance fit of the sealing ring 203b is formed on the bottom plate of the liquid storage cylinder 100, thereby realizing the sealing of the fit with the liquid storage cylinder 100; When the above settings are in use, the staff can rotate the mating column 203c through the cooperation between the tool and the internal hexagonal groove 203c-1, so as to rotate the adjusting disc 203 to drive the driving column 203a to rotate. Also, due to the fact that the driving column 203a is slidably sleeved in the mating ear 202a and the helical fit between the fixed sleeve 201 and the movable sleeve 202, when the driving column 203a rotates to drive the movable sleeve 202 to rotate, the movable sleeve 202 can move along the axial direction of the fixed sleeve 201. When the movable sleeve 202 moves to expose the first through hole 201b, the inside and outside of the liquid storage cylinder 100 can be communicated through the first through hole 201b, which is convenient for vacuum pumping and water injection. When the movable sleeve 202 moves to cover the outside of the first through hole 201b, the inside and outside of the liquid storage cylinder 100 can be isolated. Embodiment 2

[0032] Refer to Figure 3 and Figure 5, which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The difference is that another specific structure is adopted to realize the rotation of the driving column 203a to drive the movable sleeve 202 to rotate relative to the fixed sleeve 201, so as to complete the opening and closing of the flow holes between the fixed sleeve 201 and the movable sleeve 202.

[0033] Specifically, the driving column 203a is slidably sleeved in the mating ear 202a. An external thread 201a is provided on the outer side wall of the fixed sleeve 201, and at the same time, an internal thread 202c that is helically engaged with the external thread 201a is provided on the inner wall of the movable sleeve 202; the lower end of the fixed sleeve 201 is open, and at the same time, the lower end of the movable sleeve 202 is closed. Second through holes 202d are circumferentially arrayed on the side wall of the movable sleeve 202; When the above settings are in use, when the driving column 203a drives the movable sleeve 202 to rotate, and combined with the helical engagement setting between the movable sleeve 202 and the fixed sleeve 201, the movable sleeve 202 can be moved in the axial direction of the fixed sleeve 201. When the second through hole 202d moves to the lower end of the fixed sleeve 201, the inside and outside of the liquid storage cylinder 100 can be communicated through the second through hole 202d, which is convenient for vacuum pumping and water injection. When the second through hole 202d moves to the side wall position of the fixed sleeve 201, the isolation between the inside and outside of the liquid storage cylinder 100 can be realized. Embodiment 3

[0034] Refer to Figure 3 、 Figure 6 and Figure 7 , which is the third embodiment of the present invention. This embodiment is based on any of the above embodiments. The difference is that yet another specific structure is adopted to realize the rotation of the driving column 203a to drive the movable sleeve 202 to rotate relative to the fixed sleeve 201, so as to complete the opening and closing of the flow holes between the fixed sleeve 201 and the movable sleeve 202.

[0035] Specifically, the upper end of the driving column 203a is fixedly connected to the mating ear 202a. First through slots 201c are circumferentially arrayed on the side wall of the fixed sleeve 201, and second through slots 202e are circumferentially arrayed on the side wall of the movable sleeve 202, and the first through slots 201c are located inside the rotation track surface of the second through slots 202e; the lower ends of both the fixed sleeve 201 and the movable sleeve 202 are closed; When the above setting is in use, by rotating the driving column 203a, the movable sleeve 202 can be driven to rotate relative to the fixed sleeve 201. When the first through groove 201c and the second through groove 202e are partially overlapped, the inside and outside of the liquid storage cylinder 100 can be communicated through the first through groove 201c and the second through groove 202e, which is convenient for vacuum pumping and water injection. When the first through groove 201c and the second through groove 202e are completely misaligned, the isolation between the inside and outside of the liquid storage cylinder 100 can be realized; of course, in actual use, in order to improve the sealing performance of the cooperation between the movable sleeve 202 and the fixed sleeve 201, sealing oil can be filled in their gaps; in addition, in actual operation, by adjusting the size of the overlapping part of the first through groove 201c and the second through groove 202e, the adjustment of the vacuum pumping and water injection efficiency can be realized.

[0036] Further, a fixed ear 203c-2 is fixedly arranged on the outer side wall of the mating column 203c located below the liquid storage cylinder 100. A locking bolt 203c-3 is spirally sleeved on the fixed ear 203c-2, and the upper end of the locking bolt 203c-3 abuts against the bottom surface of the liquid storage cylinder 100. By adjusting the locking bolt 203c-3, the limit of the mating column 203c can be realized, and the problem of self-rotation of the mating column 203c can be avoided. It should be noted that the locking bolt 203c-3 is made of non-metallic material. Embodiment 4

[0037] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 8 This is the fourth embodiment of the present invention. This embodiment is based on the previous embodiment. The difference is that in order to fully discharge the air inside the liquid storage cylinder 100 and avoid the situation that when the air dissolved in the water is discharged in a vacuum or low-pressure environment, it cannot be discharged outside the liquid storage cylinder 100 in time, this embodiment is proposed.

[0038] Specifically, a drain groove 104 is opened on the top plate of the liquid storage cylinder 100 on one side of the threaded through hole 101. A drain head 300 is fitted in the drain groove 104 on the top plate of the liquid storage cylinder 100 with a clearance. The vertical section of the drain groove 104 is integrally formed by an isosceles trapezoid, a rectangle located at the upper end of the isosceles trapezoid, and a convex shape located below the isosceles trapezoid. A plurality of drain holes 104a are arranged in a circumferential array on the inclined surface of the isosceles trapezoid; the drain head 300 includes an upper plug 301 and a lower plug 302 fixedly connected to the lower end of the upper plug 301. The upper plug 301 is used for clearance fitting at the connection position of the isosceles trapezoid and the rectangle, and the lower plug 302 is used for clearance fitting at the convex position; When the above settings are in use, when the liquid storage cylinder 100 is in a vacuum state, due to the pressure difference inside and outside, the upper plug 301 fits into the liquid discharge groove 104 to achieve the sealing inside the liquid storage cylinder 100. After water is injected into the liquid storage cylinder 100, under the action of buoyancy, the lower plug 302 fits into the liquid discharge groove 104, and at the same time the upper plug 301 separates from the liquid discharge groove 104. In this way, the air dissolved in the water is discharged through the liquid discharge hole 104a. In addition, the liquid discharge hole 104a is also used for discharging the excess water when it is full of water. After the liquid storage cylinder 100 is filled with water, by pressing down the liquid discharge head 300, the excess water inside the liquid storage cylinder 100 can be discharged. Then, only by attaching a tape to the outside of the liquid discharge head 300 can the sealing of the cooperation between the liquid discharge head 300 and the liquid discharge groove 104 be achieved.

[0039] Furthermore, a plurality of convex columns 103 are fixedly arranged along the circumference on the bottom surface of the liquid storage cylinder 100, and a plurality of locking grooves 102 that are respectively engaged with the plurality of convex columns 103 are arranged along the circumference on the top surface of the liquid storage cylinder 100. In this way, the limit of the cooperation between two adjacent liquid storage cylinders 100 can be achieved. Embodiment 5

[0040] This embodiment is the fifth embodiment of the present invention. This embodiment provides a method for using an imaging scanning calibration device. Specifically, the operation is carried out according to the following steps; S1: Rotate the movable sleeve 202 through the adjusting disk 203 to make the flow hole between the movable sleeve 202 and the fixed sleeve 201 in an open state. Then, one end of the delivery pipe of the vacuum pump is spirally fitted on the threaded through hole 101, and the vacuum pump performs a vacuum pumping operation on the inside of the liquid storage cylinder 100. S2: After the vacuum pumping is completed, rotate the adjusting disk 203 to make the flow hole between the movable sleeve 202 and the fixed sleeve 201 in a closed state; S3: After the vacuum pumping of multiple liquid storage cylinders 100 is completed, one end of the delivery pipe of the water source is spirally fitted on the threaded through hole 101. Rotate the adjusting disk 203 to make the flow hole between the movable sleeve 202 and the fixed sleeve 201 in an open state, and inject water into the liquid storage cylinder 100. S4: After filling with water, rotate the adjusting disk 203 to make the flow hole between the movable sleeve 202 and the fixed sleeve 201 in a closed state; S5: After all the liquid storage cylinders 100 are filled with water, place the liquid storage cylinders 100 in an overlapping manner in the imaging scanning device to complete the calibration of the imaging scanning device.

[0041] In addition, it should be noted that the components not described in detail in this article are prior art.

[0042] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0043] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of carrying out the present invention, or those features that are not relevant to the implementation of the present invention).

[0044] It should be understood that in the development of any actual implementation, as in any engineering or design project, a large number of specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development efforts will be a routine task of design, manufacturing and production without excessive experimentation.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An imaging scanning calibration device, characterized in that: including, a liquid storage cylinder (100) arranged in a closed manner. A threaded through hole (101) is provided in the middle of the top plate of the liquid storage cylinder (100), and a liquid discharge groove (104) is provided on the top plate of the liquid storage cylinder (100) on one side of the threaded through hole (101); an adjusting mechanism (200) arranged inside the liquid storage cylinder (100), including a fixed sleeve (201) fixed to the bottom of the top plate of the liquid storage cylinder (100), a movable sleeve (202) sleeved outside the fixed sleeve (201), and an adjusting disc (203) arranged coaxially below the movable sleeve (202). The fixed sleeve (201) is arranged coaxially outside the threaded through hole (101). A plurality of mating ears (202a) are fixedly arranged along the circumferential direction at the lower end position of the outer side wall of the movable sleeve (202). A plurality of driving columns (203a) respectively mating with the mating ears (202a) are fixedly arranged on the top surface of the adjusting disc (203). By rotating the adjusting disc (203), the driving columns (203a) are used to drive the movable sleeve (202) to rotate relative to the fixed sleeve (201), so as to complete the opening and closing of the through hole between the fixed sleeve (201) and the movable sleeve (202); and, a liquid discharge head (300) in clearance fit with the liquid discharge groove (104) on the top plate of the liquid storage cylinder (100).

2. An imaging scanning calibration device according to claim 1, characterized in that: A mating column (203c) is coaxially and fixedly arranged on the bottom surface of the adjusting disc (203), and the mating column (203c) slidably penetrates through the bottom plate of the liquid storage cylinder (100). An internal hexagonal groove (203c-1) is provided on the bottom surface of the mating column (203c).

3. An imaging scan calibration device according to claim 2, characterized in that: A sealing ring (203b) is connected to the fixed sleeve (201) on the outer side wall of the mating column (203c), and an oil seal groove (203b-1) is provided along the circumferential direction on the outer side wall of the sealing ring (203b). A first sealing groove (105) for clearance fit with the sealing ring (203b) is provided on the bottom plate of the liquid storage cylinder (100); A second sealing groove (202b-1) is provided along the circumferential direction on the top surface of the movable sleeve (202), and a sealing ring (202b) is in interference fit in the second sealing groove (202b-1).

4. An imaging scan calibration device as claimed in claim 3, wherein: The driving column (203a) is slidably sleeved in the mating ear (202a). An external thread (201a) is provided on the outer side wall of the fixed sleeve (201), and an internal thread (202c) helically mating with the external thread (201a) is provided on the inner wall of the movable sleeve (202).

5. The imaging scanning calibration device according to claim 4, characterized in that: The lower end of the fixed sleeve (201) is arranged in a closed manner, while the lower end of the movable sleeve (202) is arranged in an open manner. A plurality of first through holes (201b) are provided along the circumferential direction on the side wall of the fixed sleeve (201).

6. An imaging scan calibration device according to claim 4, characterized in that: The lower end of the fixed sleeve (201) is arranged in an open manner, while the lower end of the movable sleeve (202) is arranged in a closed manner. A plurality of second through holes (202d) are provided along the circumferential direction on the side wall of the movable sleeve (202).

7. The imaging scan calibration device according to claim 3, wherein: The upper end of the driving column (203a) is fixedly connected to the mating ear (202a). The side wall of the fixed sleeve (201) is circumferentially and arrayedly provided with first through grooves (201c). The side wall of the movable sleeve (202) is circumferentially and arrayedly provided with second through grooves (202e), and the first through grooves (201c) are located inside the rotation trajectory plane of the second through grooves (202e). The lower ends of both the fixed sleeve (201) and the movable sleeve (202) are closed. On the outer side wall of the mating column (203c) located below the liquid storage cylinder (100), a fixed ear (203c-2) is fixedly provided. A locking bolt (203c-3) is helically sleeved on the fixed ear (203c-2), and the upper end of the locking bolt (203c-3) abuts against the bottom surface of the liquid storage cylinder (100).

8. An imaging scan calibration device according to claim 5, 6 or 7, characterized in that: The vertical cross-section of the liquid discharge groove (104) is integrally formed by an isosceles trapezoid, a rectangle located at the upper end of the isosceles trapezoid, and a convex shape located below the isosceles trapezoid. A plurality of liquid discharge holes (104a) are circumferentially and arrayedly provided on the inclined surface of the isosceles trapezoid. The liquid discharge head (300) includes an upper plug (301) and a lower plug (302) fixedly connected to the lower end of the upper plug (301). The upper plug (301) is used for clearance fit at the connection position of the isosceles trapezoid and the rectangle, and the lower plug (302) is used for clearance fit at the convex position.

9. An imaging scan calibration device according to claim 8, characterized in that: On the bottom surface of the liquid storage cylinder (100), a plurality of convex columns (103) are circumferentially and fixedly provided. On the top surface of the liquid storage cylinder (100), a plurality of locking grooves (102) that are respectively engaged with the plurality of convex columns (103) are circumferentially provided.

10. A method for using an imaging scan calibration device, characterized in that: An imaging scanning calibration device according to any one of claims 8 to 9 is operated and used according to the following steps; S1: Rotate the movable sleeve (202) through the adjusting disk (203) to make the flow hole between the movable sleeve (202) and the fixed sleeve (201) in an open state. Then, one end of the delivery pipe of the vacuum pump is helically fitted on the threaded through hole (101), and the vacuum pump performs a vacuum pumping operation on the inside of the liquid storage cylinder (100). S2: After the vacuum pumping is completed, rotate the adjusting disk (203) to make the flow hole between the movable sleeve (202) and the fixed sleeve (201) in a closed state. S3: After the vacuum pumping of a plurality of liquid storage cylinders (100) is completed, one end of the delivery pipe of the water source is helically fitted on the threaded through hole (101). Rotate the adjusting disk (203) to make the flow hole between the movable sleeve (202) and the fixed sleeve (201) in an open state, and inject water into the liquid storage cylinder (100). S4: After the water is filled, rotate the adjusting disk (203) to make the flow hole between the movable sleeve (202) and the fixed sleeve (201) in a closed state. S5: After all the liquid storage cylinders (100) are filled with water, place the liquid storage cylinders (100) in a stacked manner in the imaging scanning device to complete the calibration of the imaging scanning device.

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