Electromagnetic door lock structure of irradiator

Abstract

The utility model provides an irradiator electromagnetic door lock structure which comprises a lead chamber main body and a lead chamber door, one side of the lead chamber main body and one side of the lead chamber door are hinged through a hinge, the other side of the lead chamber main body and the other side of the lead chamber door are provided with a door lock structure, and the door lock structure comprises a safety switch and an electromagnetic door lock. The electromagnetic door lock comprises an electromagnet arranged on the lead chamber body and a suction block arranged on the lead chamber door, the suction block is connected with the lead chamber door through a first screw, and a spring washer is arranged between the head end of the first screw and the lead chamber door. The lead chamber door has the advantages that due to the adoption of the technical scheme, the lead chamber door can be closed more stably, the requirement for the assembly precision of the lead chamber door is lowered, and later maintenance and repair are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an electromagnetic door lock structure of an irradiator. Background Art

[0002] X-ray biological irradiator is an analytical instrument used in the fields of biology, basic medicine, and pharmacy. It is mainly used in cancer biology, human genome, induced gene changes, stem cells, small animal irradiation, cell culture and division inhibition research, research on TB cells and blood cells, bone marrow transplant irradiation, transplant immunity, immunosuppressive therapy, radiation sensitivity research, DNA damage research, food irradiation, microbial inactivation, plant and seed irradiation, etc.

[0003] The lead chamber of the irradiator is where the irradiated materials are irradiated. A lead chamber door is installed on one side of the lead chamber for placing and removing irradiated materials. X-rays are generated during the irradiation process. During the irradiation process, the lead chamber must be absolutely closed to prevent radiation leakage and radiation contamination. The main body of the lead chamber door is made of lead. For larger lead chambers, the weight of the lead chamber door can reach tens to hundreds of kilograms. Therefore, the closing accuracy and locking force of the lead chamber door are required to be high. To ensure the closing accuracy of the large and heavy lead chamber door, the assembly precision requirements are very high, which is difficult to achieve in actual operation. It is also difficult to maintain a high-precision assembly state during use. Utility Model Content

[0004] The purpose of the utility model is to provide an electromagnetic door lock structure, which is particularly suitable for application on irradiators requiring higher closing stability.

[0005] The technical solution of the utility model is:

[0006] An electromagnetic door lock structure for an irradiator includes a lead chamber body and a lead chamber door. The lead chamber body and the lead chamber door form a square lead chamber. One side of the lead chamber body and the lead chamber door are hinged together, and the other side is equipped with a door lock structure. The door lock structure includes a safety switch and an electromagnetic door lock. The safety switch ensures that the lead chamber door is closed when the irradiator is operating, primarily when the tube is emitting X-rays. The electromagnetic door lock is used to firmly attract the lead chamber door to the lead chamber body.

[0007] The electromagnetic door lock includes an electromagnet mounted on the lead chamber body and a suction block mounted on the lead chamber door. The suction block is connected to the lead chamber door via a first screw, with a spring washer positioned between the head of the first screw and the lead chamber door. A through hole is provided in the lead chamber door to engage with the first screw. The first screw passes through the through hole in the lead chamber door, and the tail end of the first screw is connected to the suction block. The diameter of the head of the first screw is larger than the diameter of the through hole.

[0008] Compared with fixing the suction block directly on the lead chamber door, the above-mentioned suction block connection method allows the suction block to shake slightly under the action of the spring washer, so that the suction block can change its posture within a certain range during the closing process of the lead chamber door, thereby accurately fitting with the electromagnet.

[0009] An elastic body is provided between the suction block and the lead chamber door.

[0010] In the present invention, a slight shaking of the suction block is allowed, but at the same time, when the suction block is not tightly sucked by the electromagnet, it will collide with the lead chamber door and produce abnormal noise. Although there is a spring washer, the abnormal noise cannot be completely eliminated. Therefore, the present invention arranges an elastic body between the lead chamber door and the suction block to eliminate the abnormal noise.

[0011] Preferably, the elastic body between the suction block and the lead chamber door is an O-ring sleeved on the first screw.

[0012] The lead chamber door comprises a base plate and a suction block cover, which is fastened to the base plate via bolts. A suction block mounting plate is provided within the suction block cover, and a first screw penetrates the suction block cover and is threadedly connected to the suction block mounting plate. A suction block hole is provided in the base plate at the suction block cover. The suction block is convex in shape, with the head of the suction block extending outward from the suction block hole. The shoulder of the suction block is connected to the suction block mounting plate via a second screw.

[0013] A suction block housing is provided on the base plate to accommodate the suction block. The suction block hole in the base plate allows only the head of the suction block to be exposed, but the base plate limits the shoulder of the suction block. Even if the first bolt connection between the suction block and the lead chamber door fails, the electromagnetic door lock can still effectively close the lead chamber door.

[0014] In addition, after the suction block has been used for a period of time, there will be some contamination on the end face that is in contact with the electromagnet, and the suction block needs to be replaced regularly. The connection method of the suction block cover only requires removing the suction block cover from the base plate, and then the suction block assembly can be removed from the lead chamber door, thereby improving the convenience of equipment maintenance.

[0015] The utility model provides a suction block mounting plate in the suction block cover. When disassembling and replacing the suction block, it is only necessary to release the connection between the suction block and the second screw on the suction block mounting plate without loosening the first screw, thereby eliminating the step of adjusting the relative position of the suction block and the lead chamber door and improving the convenience of loading and unloading the suction block.

[0016] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical solution, the closure of the lead chamber door can be made more stable, the assembly accuracy requirements of the lead chamber door are reduced, and the subsequent maintenance and repair are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structural principle of the utility model

[0018] Figure 2 This is a schematic diagram of the main view of the utility model

[0019] Figure 3 yes Figure 2 Cross-sectional view at AA

[0020] Figure 4 yes Figure 3 Detail of point A in the middle

[0021] Figure 5 This is the explosion diagram of the electromagnetic door lock

[0022] Figure 6 yes Figure 5 Detail of point B in the middle

[0023] In the picture:

[0024] 1. Lead chamber body 2. Lead chamber door 3. Hinge

[0025] 4. Safety switch 5. Electromagnetic door lock 21. Base plate

[0026] 22. Suction block cover 51, electromagnet 52, suction block

[0027] 53. Suction block mounting plate 54. First screw 55. Second screw

[0028] 56, spring washer 57, O-ring 521, head of suction block

[0029] 522. Shoulder of the Suction Block DETAILED DESCRIPTION

[0030] like Figure 1-6 As shown, the utility model:

[0031] An electromagnetic door lock structure for an irradiator includes a lead chamber body 1 and a lead chamber door 2. The lead chamber body and the lead chamber door are hingedly connected on one side by a hinge 3, and a door lock structure is provided on the other side. The door lock structure includes a safety switch 4 and an electromagnetic door lock 5. The electromagnetic door lock comprises an electromagnet 51 disposed on the lead chamber body and a suction block 52 disposed on the lead chamber door 2. The lead chamber door 2 comprises a base plate 21 and a suction block cover 22. The suction block cover 22 is bolted to the base plate 21. A suction block mounting plate 53 is provided within the suction block cover. The suction block 52 is connected to the lead chamber door 2 via a first screw 54. The tail end of the first screw 54 passes through the suction block cover 22 and is threadedly connected to the suction block mounting plate 53. A spring washer 56 is provided between the head end of the first screw 54 and the suction block cover 22. An O-ring 57 is mounted on the first screw 54 between the suction block mounting plate 53 and the suction block cover 22.

[0032] A suction block hole is provided on the base plate 21 at the suction block cover 22 . The suction block 52 is convex in shape. The head 521 of the suction block extends outward from the suction block hole. The shoulder 522 of the suction block is connected to the suction block mounting plate 53 by a second screw 55 .

[0033] The working process of this example:

[0034] When assembling the equipment, the electromagnet 51 is fixedly installed on the lead chamber body 1, the suction block 52 is assembled with the suction block cover 22 by the first screw 54, and the suction block cover 22 is installed on the base plate 21. By turning the first screw 54, the degree to which the spring washer 56 and the O-ring 57 are compressed is adjusted, so that the range of movement of the suction block 52 is adjusted to fit on the electromagnet 51.

[0035] When the suction block 52 is damaged and needs to be disassembled and replaced, it is only necessary to disassemble the suction block cover 22 from the base plate, and then disassemble and replace the suction block 52 and the suction block mounting plate 53, which is easy to operate.

[0036] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. An electromagnetic door lock structure for an irradiator, comprising a lead chamber body and a lead chamber door, wherein the lead chamber body and the lead chamber door are hinged on one side and a door lock structure is provided on the other side, characterized in that: The door lock structure includes a safety switch and an electromagnetic door lock. The electromagnetic door lock includes an electromagnet arranged on the lead chamber body and a suction block arranged on the lead chamber door. The suction block is connected to the lead chamber door through a first screw, and a spring washer is provided between the head end of the first screw and the lead chamber door.

2. The electromagnetic door lock structure of the irradiator according to claim 1, characterized in that: An elastic body is provided between the suction block and the lead chamber door.

3. The electromagnetic door lock structure of the irradiator according to claim 2, characterized in that: The elastic body between the suction block and the lead chamber door is an O-ring sleeved on the first screw.

4. The electromagnetic door lock structure of the irradiator according to claim 1, characterized in that: The lead chamber door includes a base plate and a suction block cover, which is fastened to the base plate by bolts. A suction block mounting plate is provided in the suction block cover, and the first screw passes through the suction block cover and is threadedly connected to the suction block mounting plate. A suction block hole is provided on the base plate at the suction block cover, and the suction block is in a convex shape. The head of the suction block extends outward from the suction block hole, and the shoulder of the suction block is connected to the suction block mounting plate by a second screw.

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