A head sealing structure of an X-ray machine

Abstract

The utility model belongs to the technical field of medical equipment, and specifically discloses a head sealing structure of an X-ray machine. The specific technical scheme is as follows: the utility model comprises a cylinder body, which is a cylindrical hollow structure, is provided with a plurality of annular grooves, an annular protrusion is provided on the outer side surface of an expander, the expander is placed in the cylinder body, the annular protrusion of the expander is clamped in the annular groove corresponding to the cylinder body, a tensioning body is arranged at the port of the cylinder body, the tensioning body is pressed on the annular clamping edge of the expander, under the action of the tensioning screw, the opening of the tensioning body is enlarged, the annular clamping edge of the expander is clamped in the cylinder body through the tensioning body, a copper sheet is pressed between the tensioning body and the annular clamping edge, the annular clamping edge at the square notch is compacted by the tensioning of the copper sheet, and complete sealing is achieved, the whole device is simple and efficient, and after verification, no oil leakage is found after the device is put into batch use, reliable vacuum and heat dissipation can be guaranteed when the X-ray tube is working, the service life is long, and the device can be widely promoted and applied.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a head sealing structure of an X-ray machine. Background Art

[0002] The current combined X-ray heads mainly include industrial frequency machines and high frequency machines. High frequency machines are further divided into low power and high power. This type of head is widely used in X-ray machines. The combined X-ray head is assembled on the frame of the X-ray machine and connected to other circuits to form a complete X-ray machine. This machine can be used by hospitals at all levels to perform ordinary photography and high kilovolt photography in all directions in combination with the human head, chest, abdomen, limbs and bones.

[0003] The X-ray head is a device that generates X-rays. The X-ray assembly is equipped with cooling transformer oil. The head shell is welded from sheet metal parts, one end of which is welded and sealed, and the other end is open for easy assembly of parts. An X-ray window is left in the cylindrical symmetrical part. At the head position, the sealing effect between the tensioner, expander and cylinder is difficult to ensure. Once oil leakage occurs, the head will be unusable, affecting the operation of the X-ray machine. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a head sealing structure, which achieves a good sealing effect by increasing the opening of the tensioning body and changing the diameter of the tensioning body.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a head sealing structure of an X-ray machine, including a cylinder, the cylinder is a cylindrical hollow structure, and a plurality of annular grooves are provided on the cylinder, and the plurality of annular grooves are arranged in parallel.

[0006] The sealing structure also includes a cylindrical expander, an annular protrusion is provided on the outer side surface of the expander, the expander is placed in the cylinder, the annular protrusion of the expander is clamped in the corresponding annular groove of the cylinder, and an annular clamping edge is provided at the outer end of the expander.

[0007] The sealing structure also includes a tensioner placed in the cylinder, which is arranged at the port of the cylinder and presses on the annular clamping edge of the expander. Under the action of the tensioning screw, the expander is clamped in the cylinder through the tensioner.

[0008] One end of the tensioning body is provided with a first tensioning platform, and the other end of the tensioning body is provided with a second tensioning platform. The screw of the tensioning screw is threadedly connected to the first tensioning platform, and the screw head of the tensioning screw is placed on the second tensioning platform. A square gap is left between the first tensioning platform and the second tensioning platform, and the screw head of the tensioning screw is placed in the square gap. The tensioning body is provided with a triangular gap, and the triangular gap is arranged on the back of the first tensioning platform. Turning the tensioning screw clockwise, the opening of the square gap increases, the tensioning body expands outward and presses against the annular clamping edge, and the annular clamping edge is close to the inner wall of the cylinder to achieve sealing.

[0009] Since the annular clamping edge cannot be compacted at the square notch, a copper sheet is pressed between the tensioning body and the annular clamping edge. The annular clamping edge at the square notch is compacted by the expansion of the copper sheet, thereby achieving complete sealing.

[0010] Among them, the screw head of the tensioning screw is an external hexagonal structure, and the tensioning screw can be tightened by a wrench, which is quick and convenient.

[0011] The main body of the tensioner is a gradual structure, the thickness of the middle part of the tensioner is less than the thickness of the first tensioning platform, and the thickness of the middle part of the tensioner is less than the thickness of the second tensioning platform. This structure has a better supporting effect.

[0012] Compared with the prior art, the utility model has the following specific beneficial effects: the utility model clamps the tensioning body on the clamping edge of the expander, and tightens the tensioning screw clockwise, so that the length of the screw of the tensioning screw placed in the square notch increases, the opening of the square notch increases, and the copper sheet is close to the clamping edge of the expander, thereby ensuring the sealing pressure at the square notch and the sealing effect at the square notch, thereby achieving the sealing of the entire machine head. The entire device is simple and efficient. After verification, no oil leakage was found after the device was put into batch use. The X-ray tube can ensure reliable vacuum and heat dissipation when working, has a long service life, and can be widely promoted and applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is the front view of the utility model.

[0015] Figure 3 for Figure 2 Cross-sectional view at AA in the middle.

[0016] Figure 4 for Figure 2 Schematic diagram of the structure of the middle tensioner.

[0017] Figure 5 for Figure 2 Schematic diagram of the structure of the expander.

[0018] In the figure, 1 is a cylinder, 11 is an annular groove, 2 is an expander, 21 is an annular protrusion, 22 is an annular clamping edge, 3 is a tensioning body, 31 is a first tensioning platform, 32 is a second tensioning platform, 33 is a tensioning screw, 34 is a square notch, 35 is a triangular notch, and 4 is a copper sheet. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] like Figure 1-5 As shown, a sealing structure of the head of an X-ray machine includes a cylinder 1. The cylinder 1 is a cylindrical hollow structure. A plurality of annular grooves 11 are provided on the cylinder 1. The plurality of annular grooves 11 are arranged in parallel.

[0021] The sealing structure also includes a cylindrical expander 2, which has an annular protrusion 21 on its upper outer surface. The expander 2 is placed in the cylinder 1, and the annular protrusion 21 of the expander 2 is clamped in the corresponding annular groove 11 of the cylinder 1. The outer end of the expander 2 is provided with an annular clamping edge 22.

[0022] The sealing structure also includes a tensioner 3 placed in the cylinder 1. The tensioner 3 is arranged at the port of the cylinder 1 and is pressed against the annular clamping edge 22 of the expander 2. Under the action of the tensioning screw 33, the expander 2 is clamped in the cylinder 1 through the tensioner 3.

[0023] A first tensioning platform 31 is provided at one end of the tensioning body 3, and a second tensioning platform 32 is provided at the other end of the tensioning body 3. The screw of the tensioning screw 33 is threadedly connected to the first tensioning platform 31, and the screw head of the tensioning screw 33 is pressed against the second tensioning platform 32. A square notch 34 is left between the first tensioning platform 31 and the second tensioning platform 32, and the screw head of the tensioning screw 33 is placed in the square notch 34. A triangular notch 35 is provided on the tensioning body 3, and the triangular notch 35 is arranged on the back of the first tensioning platform 31. By turning the tensioning screw 33 clockwise, the opening of the square notch 34 is enlarged, the tensioning body 3 is expanded outward and presses against the annular clamping edge 22, and the annular clamping edge 22 is close to the inner wall of the cylinder 1 to achieve sealing.

[0024] Since the annular clamping edge 22 cannot be compacted at the square notch 34, a copper sheet 4 is pressed between the tensioning body 3 and the annular clamping edge 22. One end of the copper sheet 4 is compacted by the first tensioning platform 31, and the other end of the copper sheet 4 is compacted by the second tensioning platform 32. The annular clamping edge 22 at the square notch 34 is compacted by the expansion of the copper sheet 4 to achieve complete sealing.

[0025] The screw head of the tensioning screw 33 is an external hexagonal structure, and tightening the tensioning screw 33 by a wrench is quick and convenient.

[0026] The main body of the tensioning body 3 is a gradual structure, the thickness of the middle part of the tensioning body 3 is less than the thickness of the first tensioning platform 31, and the thickness of the middle part of the tensioning body 3 is less than the thickness of the second tensioning platform 32. This structure has a better supporting effect.

[0027] During the installation process, the expander 2 is first placed into the cylinder 1, and the annular protrusion 21 of the expander 2 is clamped in the annular clamping groove 11 of the cylinder 1 to achieve preliminary clamping, and the tightening screw 33 is screwed into the first tightening platform 31 of the tightening body 3 through the square notch 34, and the combination of the tightening screw 33 and the tightening body 3 is placed in the annular clamping edge 22 of the expander 2, and the copper sheet 4 is inserted between the square notch 34 of the tightening body 3 and the annular clamping edge 22, and the screw head of the tightening screw 33 is tightened with a wrench, and the screw head of the tightening screw 33 is pressed on the second tightening platform 32, the length of the tightening screw 33 placed in the square notch 34 is increased, the diameter of the tightening body 3 is increased, the opening of the tightening body 3 is increased, and the copper sheet 4 is pressed on the annular clamping edge 22, ensuring that the periphery of the annular clamping edge 22 is subjected to stable support force, which plays a good sealing role. Through batch use and experiments, no oil leakage is found, and the service life is long and the effect is good.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the scope of the present invention.

Claims

1. A head sealing structure of an X-ray machine, characterized in that: It comprises a cylinder (1), the cylinder (1) being a cylindrical hollow structure, and the cylinder (1) being provided with a plurality of annular grooves (11); It also includes a cylindrical expander (2), wherein an annular protrusion (21) is provided on the upper outer surface of the expander (2), the expander (2) is placed in the cylinder (1), the annular protrusion (21) of the expander (2) is placed in an annular groove (11) corresponding to the cylinder (1), and an annular clamping edge (22) is provided at the outer end of the expander (2); It also includes a tensioning body (3) placed in the cylinder (1), the tensioning body (3) being arranged at the port of the cylinder (1), the tensioning body (3) pressing on the annular clamping edge (22) of the expander (2), the expander (2) being clamped in the cylinder (1) through the tensioning body (3), a first tensioning platform (31) being provided at one end of the tensioning body (3), a second tensioning platform (32) being provided at the other end of the tensioning body (3), a screw rod of a tensioning screw (33) being threadedly connected to the first tensioning platform (31), a screw head of the tensioning screw (33) being pressed against the second tensioning platform (32), a square notch (34) being left between the first tensioning platform (31) and the second tensioning platform (32), a triangular notch (35) being provided on the tensioning body (3), and the triangular notch (35) being arranged on the back of the first tensioning platform (31); A copper sheet (4) is pressed between the tensioning body (3) and the annular clamping edge (22).

2. The head sealing structure of an X-ray machine according to claim 1, characterized in that: The screw head of the tensioning screw (33) is an external hexagonal structure.

3. The head sealing structure of an X-ray machine according to claim 1, characterized in that: The main body of the tensioning body (3) is a gradual structure, the thickness of the middle portion of the tensioning body (3) is smaller than the thickness of the first tensioning platform (31), and the thickness of the middle portion of the tensioning body (3) is smaller than the thickness of the second tensioning platform (32).

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