Source rod slideway of an irradiation device

Abstract

The present invention provides a source rod slideway for an irradiation device. A source rod setting device is provided in the middle of a box body. Upper and lower feeding and discharging slideways are respectively arranged on the upper and lower sides of the source rod setting device for feeding the source rod from outside the box body to the source rod setting position of the irradiation device. One-way air jet ports are arranged on the side walls of the upper feeding slideway and the lower feeding and discharging slideway for slowing down the sliding speed of the source rod in the upper and lower feeding and discharging slideways. The source rod placement groove in the source rod setting device can be rotated under the action of a transfer body, so that the source rod placement groove is docked with the upper and lower feeding and discharging slideways, and the source rod is displaced after the underwater operation is completed. The source rod slideway of this irradiation device realizes the automatic replacement of the source rod through the upper feeding slideway, the lower feeding and discharging slideway and the source rod position conversion device, and the source rod can be replaced without disassembling the shell, which is faster and safer.

Description

Technical Field

[0001] The present invention relates to the field of irradiation equipment, and particularly to a source rod slideway of an irradiation equipment. Background Art

[0002] At present, with the improvement of social production level, irradiation equipment is widely used in the production process. When it comes to an irradiation equipment that uses a source rod, the source rod needs to be disassembled for replacement during replacement, and the operation of replacing the source rod is rather troublesome and the working efficiency is very low.

[0003] Meanwhile, in the prior art, during the replacement of the source rod, due to the particularity of the texture of the source rod and the backwardness of the replacement equipment, it is very easy to damage the source rod body, causing irreparable losses.

[0004] Therefore, there is an urgent need in the prior art for a device that can conveniently replace the source rod, which can save labor and is safe and efficient at the same time. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a source rod slideway of an irradiation equipment, which realizes the automatic replacement of the source rod through a loading slideway, a unloading slideway and a source rod position conversion device, and the replacement of the source rod can be realized without disassembling the housing, which is faster and safer.

[0006] A source rod slideway of an irradiation equipment provided by an embodiment of the present invention includes a box body, and is characterized by including:

[0007] A source rod setting device is arranged in the middle of the box body. The upper and lower sides of the source rod setting device are respectively provided with a loading slideway and a unloading slideway. An included angle is provided between the loading slideway and the unloading slideway and the source rod setting device. The loading slideway is communicated with the top of the box body for loading the source rod from outside the box body to the source rod setting position of the irradiation equipment;

[0008] The unloading slideway is used for unloading the source rod from the source rod setting position of the irradiation equipment to the outside of the box body; the side walls of the loading slideway and the unloading slideway are provided with one-way air jets for slowing down the sliding speed of the source rod in the loading and unloading slideways;

[0009] The source rod setting device includes a cylindrical housing and a rotatable source rod placement groove arranged in the housing. A pair of symmetrically arranged transfer bodies are respectively arranged on the front and rear sides of the source rod placement groove. A conversion motor is arranged on each transfer body. A first conversion gear is arranged at the output end of the conversion motor. A second conversion gear meshing with the first conversion gear is arranged at the center of the transfer body. Source rod rotation gears meshing with the second conversion gear are respectively arranged on the front and rear sides of the source rod placement groove;

[0010] The inner side wall of the source rod setting device is provided with a chute for the source rod placement groove to rotate. Upper and lower limit bodies are arranged on the chute for limiting the docking of the source rod placement groove with the loading and unloading slideways;

[0011] Both ends of the source rod placement groove are provided with closable closed covers, and a set of resilient protrusions and a controller connected to the resilient protrusions are provided at the bottom of the source rod placement groove.

[0012] Preferably, the loading chute includes: a sliding cover device disposed at the top position of the loading chute; a plurality of buffer devices, which are pairwise corresponding and evenly disposed on the side of the loading chute; a plurality of one-way jet ports evenly distributed on one side of the loading chute, and the one-way jet ports are spaced from the buffer devices; a position sensor disposed at the middle position of the loading chute;

[0013] The unloading chute includes: a sliding cover device disposed at the bottom position of the unloading chute; a plurality of buffer devices, which are pairwise corresponding and evenly disposed on the side of the unloading chute; a plurality of one-way jet ports evenly distributed on one side of the unloading chute, and the one-way jet ports are spaced from the buffer devices; a position sensor disposed at the middle position of the unloading chute.

[0014] Furthermore, the sliding cover device includes: a sliding cover body having a cylindrical protrusion provided on its upper surface;

[0015] A connecting shaft disposed on the lower surface of the sliding cover body and rotatably connected to the upper surface of the box body; a return spring sleeved on the connecting shaft for resetting the sliding cover body.

[0016] Furthermore, the buffer device includes: a buffer body, the upper part of which is rotatably connected to the inner walls of the loading and unloading chutes through a buffer shaft; grooves for accommodating the buffer body are provided at the positions of the inner walls of the loading and unloading chutes; a buffer spring sleeved on the buffer shaft; cavities for accommodating the buffer spring are provided on the buffer body and the inner walls of the loading and unloading chutes, one end of the buffer spring is disposed in the cavity of the buffer body, and the other end of the buffer spring is disposed in the cavity of the inner wall of the loading and unloading chutes; the lower part of the buffer body protrudes from the surface of the inner wall of the loading and unloading chutes under the action of the buffer spring.

[0017] Compared with the prior art, the technical solution of the present invention includes not only improvements in the overall technical solution but also many improvements in details. Specifically, it has the following beneficial effects:

[0018] 1. In the technical solution of the present invention, a source rod setting device is provided in the middle of the box body, and a loading chute and an unloading chute are respectively provided on the upper and lower sides of the source rod setting device. One-way jet ports are arranged on the side walls of the loading chute and the unloading chute to slow down the sliding speed of the source rod in the loading and unloading chutes, ensuring that the whole process of loading and unloading the source rod is stable and orderly;

[0019] 2. In the technical solution of the present invention, it is described that a pair of symmetrically arranged adapters are respectively provided on the front and rear sides of the source rod placement groove. Each adapter is provided with a conversion motor, the output end of the conversion motor is provided with a first conversion gear, the center of the adapter is provided with a second conversion gear meshing with the first conversion gear, and source rod rotation gears meshing with the second conversion gear are respectively provided on the front and rear sides of the source rod placement groove. Through the rotation of the adapter, precise control of the rotation of the source rod in the box body is achieved;

[0020] 3. The present invention also describes that both ends of the source rod placement groove are provided with openable and closable covers, and a group of bounce protrusions and a controller connected to the bounce protrusions are provided at the bottom of the source rod placement groove. Here, the bounce protrusions can ensure the continuous effectiveness of the source rod during use. Through the increased bounce of the bounce protrusions, the source rod undergoes slight rotation and vibration;

[0021] 4. The structure of the present invention is simple, easy to implement, and convenient for popularization and utilization.

[0022] Other features and advantages of the present invention will be described in the subsequent specification, and part of them will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written specification, claims, and drawings.

[0023] Next, through the drawings and embodiments, the technical solution of the present invention will be further described in detail. Brief Description of the Drawings

[0024] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0025] Figure 1 It is a schematic diagram of the source rod slideway of an irradiation device in an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of a sliding cover device in an embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of a buffer device in an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of a source rod setting device in an embodiment of the present invention;

[0029] Figure 5 It is a transmission schematic diagram of an adapter in an embodiment of the present invention;

[0030] Figure 6This is a schematic diagram of the connection structure between the adapter and the source rod placement groove in the embodiment of the present invention.

[0031] In the figure: 1. Loading chute; 2. Unloading chute; 3. Source rod setting device; 4. Slide cover device; 5. Unidirectional air jet; 6. Buffer device; 7. Position sensor;

[0032] 11. Slide cover body; 12. Cylindrical protrusion; 13. Connecting shaft; 14. Return spring;

[0033] 21. Buffer shaft; 22. Buffer spring; 23. Buffer body;

[0034] 31. Source rod placement groove; 32. Sealing cover; 33. Bouncing protrusion; 34. Lower limit body; 35. Upper limit body; 37. Controller; 38. Source rod rotation gear; 39. Adapter;

[0035] 40. Second conversion gear; 41. Conversion motor; 42. First conversion gear. Specific embodiments

[0036] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0037] The embodiment of the present invention provides a source rod chute of an irradiation device. As Figure 1 shown, it includes a box body. The difference from the prior art is that a source rod setting device 3 is provided in the middle of the box body. The upper and lower sides of the source rod setting device are respectively provided with upper and lower loading chutes 1 and 2 communicating with the source rod setting device. There is an included angle between the upper and lower loading chutes and the source rod setting device. The upper loading chute communicates with the top of the box body to feed the source rod from outside the box body to the source rod setting position of the irradiation device;

[0038] The lower loading chute is used to unload the source rod from the source rod setting position of the irradiation device to the outside of the box body; the side walls of the upper and lower loading chutes are provided with unidirectional air jets 5 to spray gas through the air jets to slow down the sliding speed of the source rod in the upper and lower loading chutes;

[0039] The source rod setting device includes a cylindrical housing and a rotatable source rod placement groove 31 provided inside the housing. On the front and rear sides of the source rod placement groove, there are a pair of symmetrically arranged adapter bodies 39. Each adapter body is provided with a conversion motor 41. The output end of the conversion motor is provided with a first conversion gear 42. At the center of the adapter body, there is a second conversion gear 40 meshing with the first conversion gear. On the front and rear sides of the source rod placement groove, there are source rod rotation gears 38 meshing with the second conversion gear. Through the rotation of the adapter body, the source rod rotation gears are driven to rotate, so that the source rod placement groove rotates inside the cylindrical housing, and then is connected and matched with the loading and unloading chutes.

[0040] Furthermore, the inner side wall of the source rod setting device is provided with an arc-shaped chute for the source rod placement groove to rotate. On the chute, there are upper and lower limit bodies 34, 35 for limiting the rotation position of the source rod placement groove, so that the source rod placement groove can be better docked with the loading and unloading chutes.

[0041] Both ends of the source rod placement groove are provided with closable covers 32. When the source rod placement groove is rotating, this cover needs to be closed. When the source rod placement groove is docked with the loading and unloading chutes, the cover is opened to transfer the position of the source rod. At the bottom of the source rod placement groove, there is a group of bouncing protrusions 33 and a controller connected to the bouncing protrusions. Here, the number of the group of bouncing protrusions is greater than or equal to two. The bouncing protrusions can be respectively arranged at both ends of the bottom of the source rod placement groove, or distributed at both ends and in the middle. Through the bouncing action of the bouncing protrusions, the source rod vibrates to a certain extent, and then the source rod has a certain displacement and angular rotation, ensuring the continuous and effective use effect of the source rod.

[0042] Specifically, when replacing the source rod, the source rod setting device transfers the source rod to the position of the entrance of the unloading chute, and the source rod slides out of the irradiation equipment housing along the unloading chute; then the source rod setting device switches to the position of the exit of the loading chute, and the user puts a new source rod into the entrance of the loading chute. The new source rod slides from the loading chute to the source rod setting position. Through the above operations, the replacement of the source rod is completed. The automatic replacement of the source rod is realized through the loading chute, the unloading chute and the source rod setting device. The source rod can be replaced without disassembling the housing, which is faster and safer.

[0043] In one embodiment, a source rod setting device is provided in the middle of the box body. The upper and lower sides of the source rod setting device are respectively provided with loading and unloading chutes communicating with the source rod setting device. There is an included angle between the loading and unloading chutes and the source rod setting device. The loading chute is connected to the top of the box body for loading the source rod from outside the box to the source rod setting position of the irradiation equipment.

[0044] Specifically, the loading chute includes: a sliding cover device disposed at the top position of the loading chute; a plurality of buffer devices, which are arranged in pairs and evenly disposed on both sides of the loading chute; a plurality of unidirectional jet nozzles, which are evenly distributed on one side of the loading chute, and the unidirectional jet nozzles are arranged at intervals with the buffer devices. Further, the unidirectional jet nozzles and the buffer devices here are not arranged in a straight line, and the lateral distance between the unidirectional jet nozzle and the adjacent buffer device is 2 cm; a position sensor 7 is disposed at the middle position of the loading chute for detecting whether the source rod passes through the loading chute.

[0045] The unloading chute includes: a sliding cover device disposed at the bottom position of the unloading chute; a plurality of buffer devices, which are arranged in pairs and evenly disposed on the side of the unloading chute; a plurality of unidirectional jet nozzles, which are evenly distributed on one side of the unloading chute, and the unidirectional jet nozzles are arranged at intervals with the buffer devices; a position sensor disposed at the middle position of the unloading chute.

[0046] Further, the sliding cover device 4 here includes: a sliding cover body 11, on which a cylindrical protrusion 12 is provided on its upper surface; a connecting shaft 13 disposed on the lower surface of the sliding cover body and rotatably connected to the upper surface of the box body; a return spring 14 sleeved on the connecting shaft for resetting the sliding cover body. The sliding cover device is provided for dust prevention. Since the irradiation equipment is used for a long time and it only takes a short time to replace the source rod, dust prevention needs to be noted. The sliding cover device can effectively prevent dust during non-replacement time. The buffer device buffers the source rod in the chute to minimize the impact force when the source rod falls to the source rod position, playing a role in protecting the source rod and the source rod setting position; the sensing device can know the position of the source rod in the chute, so as to control the process of replacing the source rod.

[0047] When replacing the source rod, the sliding cover is moved through the cylindrical protrusion of the sliding cover body, and the source rod is placed. After the source rod is placed, the sliding cover body returns above the loading chute under the action of the return spring.

[0048] In another embodiment, the outlet of the loading chute forms a 60-degree angle with the horizontal plane where the center of the adapter is located and is above the horizontal plane where the center of the adapter is located; the inlet of the unloading chute forms a 60-degree angle with the horizontal plane where the center of the adapter is located and is below the horizontal plane where the center of the adapter is located.

[0049] Further, there are multiple buffer devices, which are arranged in pairs and evenly on both sides of the loading and unloading chutes; multiple one-way jet nozzles are evenly distributed on one side of the loading and unloading chutes, and the one-way jet nozzles are arranged at intervals with the buffer devices; a position sensor is arranged at the middle position of the loading and unloading chutes to detect whether the source rod passes through the loading and unloading chutes. The one-way jet nozzles mentioned here are one-way air valves, and the one-way air valves are connected to an air compressor arranged outside the box body through pipelines. Specifically, the loading chute and the unloading chute are respectively provided with four one-way air valves. There is an included angle between these four one-way air valves and the upper and lower chutes, and the range of the included angle is 45 - 60 degrees. The four one-way air valves are divided into upward jet air valves and downward jet air valves, and the upward and downward jet air valves are arranged at intervals, so that the buffering effect is better, more uniform and effective. The one-way air valves and the air compressor here are both prior arts, and their specific working principles and structures will not be elaborated here.

[0050] Specifically, for the buffer body 23, its upper part is rotationally connected to the inner wall of the loading and unloading chutes through a buffer shaft; a groove for accommodating the buffer body is arranged at the position of the inner wall of the loading and unloading chutes; a buffer spring 22 is sleeved on the buffer shaft 21.

[0051] A cavity for accommodating the buffer spring is arranged on the buffer body and the inner wall of the loading and unloading chutes. One end of the buffer spring is arranged in the cavity of the buffer body, and the other end of the buffer spring is arranged in the cavity of the inner wall of the loading and unloading chutes; the lower part of the buffer body protrudes from the surface of the inner wall of the loading and unloading chutes under the action of the buffer spring. Here, the buffer body is in a round rod shape, its upper diameter is larger than its lower diameter, the average diameter of the buffer body is 3 - 8 cm, and the buffer body is made of polystyrene foam or polyethylene foam. When the source rod falls in the loading chute and reaches the position of the buffer body during loading, the buffer body is pushed towards the loading and unloading chutes under the action of gravity, the buffer body engages with the inner wall of the loading chute, and the source rod continues to fall until it falls into the set position of the source rod.

[0052] In the third embodiment, the included angle between the loading and unloading chute and the source rod position conversion device ranges from 45 to 65 degrees, and the preferred included angle is 55 to 60 degrees. 4 to 8 groups of symmetrically arranged buffer devices are provided on both sides of the loading and unloading chute, and grooves for accommodating buffer bodies are arranged on the inner wall of the loading and unloading chute. Here, the upper part of the buffer body is rotatably connected to the inner wall of the loading and unloading chute through a buffer shaft. Further, the working surface of the buffer body is an isosceles trapezoid, and the working surface here refers to the surface in contact with the source rod. The bottom of the buffer body is larger than the top, a buffer spring is arranged at the top, circular protrusions or barbs are distributed on the upper half of the isosceles trapezoid, and strip-shaped diversion grooves are arranged on the lower half. Here, the circular protrusion is a large circle in the middle, and small circular protrusions are evenly distributed around the large circle. The diameter of the large circular protrusion is 2 cm, the diameter of the small circular protrusion is 0.5 cm, and there are 8 small circular protrusions. If barbs are provided, the height of the barb hook is 0.2 - 0.5 cm. Further, the buffer body is made of polyurethane foam; the working surface of the buffer body is arranged on the inner wall of the loading and unloading chute, and the reverse side of the working surface is a strip-shaped columnar structure for clamping on the side wall of the loading and unloading chute.

[0053] Further, bounce protrusions are arranged at the head and tail parts of the source rod placement groove. The bounce protrusion is provided with a conical body, and a raised rubber ball is arranged at the top of the conical body. Circular holes matching the shape of the bounce protrusion are arranged on the source rod placement groove. The bounce protrusion can be telescoped up and down by 3 - 8 mm along the circular hole under the action of the controller. The controller here is a prior art technology used to control the bounce of the bounce protrusion to achieve the vibration effect on the source rod, so that the source rod can be flipped by a certain angle, making the radiation rays of the source rod more uniform and effective and extending the service life. Further, in order to achieve a good bounce effect, one end of the bounce protrusion can be telescoped up and down by 3 mm along the circular hole, and the other end of the bounce protrusion can be telescoped up and down by 8 mm along the circular hole. By applying different bounce amplitudes simultaneously, it helps the source rod rotate at a more obvious angle.

[0054] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and its equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. The source rod slideway of an irradiation device, comprising a box body, characterized in that, include: A source rod setting device is provided in the middle of the box body, and upper and lower sides of the source rod setting device are provided with upper and lower material slides respectively, and an angle is set between the upper and lower material slides and the source rod setting device, and the upper material slide is connected to the top of the box body, so as to load the source rod from outside the box body to the source rod setting position of the irradiation equipment; The unloading chute is used to unload the source rod from the source rod setting position of the irradiation equipment to the outside of the box; the side walls of the loading chute and the unloading chute are provided with one-way air jets to slow down the sliding speed of the source rod in the loading and unloading chute; The source rod setting device comprises a cylindrical shell and a rotatable source rod placing groove arranged in the shell, a symmetrically arranged adapter body is respectively arranged on the front and rear sides of the source rod placing groove, each adapter body is provided with a conversion motor, a first conversion gear is arranged at the output end of the conversion motor, a second conversion gear meshed with the first conversion gear is arranged at the center of the adapter body, and a source rod rotating gear meshed with the second conversion gear is respectively arranged on the front and rear sides of the source rod placing groove; The inner wall of the source rod setting device is provided with a slide groove for the source rod placement groove to rotate, and the slide groove is provided with upper and lower limit bodies for limiting the source rod placement groove to dock with the upper and lower material slideways; Both ends of the source rod placement groove are provided with openable and closable closed covers, and the bottom of the source rod placement groove is provided with a group of bouncing protrusions and a controller connected to the bouncing protrusions; the bouncing protrusions are arranged at the head and tail parts of the source rod placement groove, the bouncing protrusions are provided with a conical body, and a raised rubber ball is provided on the top of the conical body. A circular groove hole matching the shape of the bouncing protrusion is provided on the source rod placement groove, and the bouncing protrusion can be extended and retracted 3-8mm up and down along the circular groove hole under the action of the controller.

2. The source rod slideway of an irradiation device according to claim 1, characterized in that The feeding slideway comprises: a sliding cover device, which is arranged at the top of the feeding slideway; a plurality of buffer devices, which correspond to each other and are evenly arranged on the side of the feeding slideway; a plurality of one-way air jets, which are evenly distributed on one side of the feeding slideway, and the one-way air jets are arranged at intervals from the buffer devices; a position sensor, which is arranged in the middle of the feeding slideway; The unloading chute includes: a sliding cover device, which is arranged at the bottom position of the unloading chute; a plurality of buffer devices, which correspond to each other and are evenly arranged on the side of the unloading chute; a plurality of one-way air jets, which are evenly distributed on one side of the unloading chute, and the one-way air jets are arranged at intervals from the buffer devices; and a position sensor, which is arranged in the middle position of the unloading chute.

3. The source rod slideway of an irradiation device according to claim 2, characterized in that, The sliding cover device comprises: The sliding cover body has a cylindrical protrusion disposed on its upper surface; A connecting shaft, arranged on the lower surface of the sliding cover body and rotatably connected to the upper surface of the box body; A reset spring is sleeved on the connecting shaft and is used for resetting the sliding cover body.

4. The source rod slideway of an irradiation device according to claim 2, characterized in that The buffer device comprises: A buffer body, the upper part of which is rotatably connected to the inner wall of the upper and lower material slideways through a buffer shaft; the inner wall of the upper and lower material slideways is provided with a groove for accommodating the buffer body; A buffer spring, sleeved on the buffer shaft; A cavity for accommodating the buffer spring is provided on the buffer body and the inner walls of the loading and unloading chutes. One end of the buffer spring is arranged in the cavity of the buffer body, and the other end of the buffer spring is arranged in the cavity of the inner wall of the loading and unloading chute; the lower part of the buffer body protrudes from the inner wall surface of the loading and unloading chute under the action of the buffer spring.

5. The source rod slideway of an irradiation device according to claim 4, characterized in that The working surface of the buffer body is an isosceles trapezoid with the bottom larger than the top. The buffer spring is arranged at the top. Circular protrusions or barbs are distributed on the upper half of the isosceles trapezoid, and strip-shaped diversion grooves are provided on the lower half; the working surface is arranged on the inner wall of the loading and unloading chute, and the other side of the working surface is a strip-shaped columnar structure that is clamped on the side wall of the loading and unloading chute.

6. The source rod slideway of an irradiation device according to claim 2, characterized in that, The one-way air jet port is a one-way air valve, and the one-way air valve is connected to an air compressor arranged outside the box body through a pipeline.

7. The source rod slideway of an irradiation device according to claim 1, characterized in that, The included angle range between the loading and unloading chute and the source rod position conversion device is 45 - 65 degrees.

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