A source board rack

Abstract

The present invention relates to the field of food irradiation processing, and in particular discloses a source plate rack. It comprises a flat box body, the box body is provided with a plurality of layers of double-leaf doors, source rod racks are respectively provided on the inner sides of the double-leaf doors, the source rod racks are provided with a plurality of evenly distributed source rod holes, and the distance between the centers of adjacent source rod holes is 1.2 to 1.4 centimeters; two rollers arranged up and down are respectively provided on both sides of the box body, and the rollers are close to the guide rope; one end of the guide rope is fixed to the bottom of the well, and the other end is fixed to a bracket on the ground; at least two fixing columns are provided at the lower end of the box body, and the lower end of the fixing column is inverted T-shaped, and after the inverted T-shaped part is inserted into a buffer cylinder, there is still a distance between the lower end and the buffer cylinder, and the upper end of the buffer cylinder is folded inwardly into a flange, and the lower end of the buffer cylinder is threadedly connected to the base. The present invention can avoid damage to the source rod, save costs, and reduce losses. And the source arrangement scheme is more flexible and diversified. The use of the present invention is efficient and low in cost.

Description

Technical Field

[0001] The invention relates to the field of food irradiation processing, in particular to a source plate rack. Background Art

[0002] Irradiated food refers to the use of irradiation processing to help preserve food. Irradiation can kill insects, their eggs and larvae in food, eliminate foodborne diseases that endanger global human health, make food safer, and extend the shelf life of food. Irradiation can kill bacteria, ferments, and yeasts. These microorganisms can cause fresh things such as fruits and vegetables to rot and deteriorate. Irradiated food can maintain its original flavor for a long time and can maintain its original taste. The irradiation process is to put the boxed or bagged food on the waiting area, and then transport it to the irradiation room for irradiation. The radiation source used in the irradiation process is cobalt-60. Cobalt-60 can emit gamma rays and has strong radioactivity. Water has a shielding effect on gamma rays. Therefore, when not working, the cobalt-60 should be placed in the water well. The water well is located below the cobalt-60 when it is working. It rises when it is used and falls when it is not used. The cobalt-60 is installed in the source plate rack and is raised and lowered by a lifting device erected on the top of the workplace. The current source plate rack has a relatively large spacing between adjacent source rods. Once a source rod needs to be replaced, uneven irradiation will occur due to the different activities between the old and new source rods. In addition, during the process of the source plate rack entering the water, if the lifting rope of the lifting device breaks, the source plate rack will fall sharply to the bottom of the well, causing violent vibrations and damage to the round rods, which will create certain risks and also cause waste. Summary of the invention

[0003] In order to make up for the defects of the prior art, the present invention provides a safe, easily adjustable and efficient source plate rack.

[0004] The present invention is achieved through the following technical solutions:

[0005] A source plate rack, characterized in that: it includes a flat box body, the box body is provided with a plurality of layers of double-doors, source rod racks are respectively provided on the inner sides of the double-doors, the source rod racks are provided with a plurality of evenly distributed source rod holes, and the distance between the centers of adjacent source rod holes is 1.2 to 1.4 centimeters; two rollers arranged up and down are respectively provided on both sides of the box body, and the rollers are close to the guide rope; one end of the guide rope is fixed to the bottom of the well, and the other end is fixed to a bracket on the ground; at least two fixing columns are provided at the lower end of the box body, and the lower end of the fixing column is inverted T-shape, and after the inverted T-shaped part is inserted into a buffer tube, there is still a distance between the lower end and the inside of the buffer tube, and the upper end of the buffer tube is folded inward to form a flange, and the lower end of the buffer tube is threadedly connected to the base.

[0006] A buffer is arranged at the bottom of the buffer cylinder.

[0007] The buffer is a spring.

[0008] The roller is thin in the middle and thick at both ends.

[0009] The distance between the centers of adjacent source rod holes is 1.3 cm.

[0010] The double doors have three layers, each layer has 100 source rod holes, each door has 50 source rod holes, and the distance between the centers of the two middle source rod holes is 11 to 12 centimeters.

[0011] The vertical spacing between each layer of source rods is 16 cm.

[0012] The distance between the centers of the two middle source rod holes is 11.2 cm.

[0013] The double doors are provided with locks.

[0014] The beneficial effects of the present invention are:

[0015] 1. The present invention provides a buffer cylinder which plays a buffering role, thereby avoiding the strong impact caused by the breakage of the suspension rope, avoiding damage to the source rod, saving costs and reducing losses.

[0016] 2. The present invention reduces the interval between adjacent source rod holes. When a problem occurs in a source rod or the strength of the source rods is uneven, the uniformity of the source rod irradiation can be adjusted by the density of the source rod arrangement. The source arrangement scheme is more flexible and diversified (such as Figure 1-3 As shown, the gray part represents that there is an active rod in the source rod hole, and the blank part represents that there is no source rod in the source rod hole. During actual operation, appropriate adjustments should be made according to actual conditions).

[0017] 3. Comparison of experimental data between new and old source racks:

[0018] 3.1 Old source board rack

[0019] (1) No layer change, full load irradiation (10kGy)

[0020]

[0021] (2) Layer change, full load irradiation (10 kGy)

[0022]

[0023] 3.2 New source board rack (the present invention)

[0024] (1) Without changing the layer, irradiate with 40 cm space at both ends of the hanger (10 kGy)

[0025]

[0026] (2) Layer change, full load irradiation (10 kGy)

[0027]

[0028] Note: In the layer-changing mode, a single hanger enters and exits the irradiation room twice, and the time it stays at each workstation each time is the workstation dwell time.

[0029] 3.3 Taking density 0.25 as an example, the new and old source racks are compared:

[0030]

[0031] 3.4 The pause schedule of the layer changing station of the present invention

[0032]

[0033] From the above experimental data, it can be seen that after using the new source plate rack, the output and energy utilization rate are significantly improved during the layer changing operation, and the effect of layer changing is obviously better than not changing the layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings:

[0035] Figure 1 It is the source removal scheme of the upper layer during the use of the present invention;

[0036] Figure 2 It is the source removal scheme of the middle layer during the use of the present invention;

[0037] Figure 3 It is the source removal scheme of the lower layer during the use of the present invention;

[0038] Figure 4 This is a schematic diagram of the main structure of the present invention during use;

[0039] Figure 5 Schematic diagram of the cross-sectional structure of the fixed column, buffer cylinder and base

[0040] Figure 6 This is a schematic diagram of the structure after a door is opened;

[0041] Figure 7 for Figure 6 Schematic diagram of the top view structure.

[0042] In the figure, 1 is a box body, 2 is a double door, 3 is a lock pin, 4 is a roller, 5 is a flange, 6 is a guide rope, 7 is a base, 801 is a support rod, 802 is a source rod hole, 803 is a support rod, 804 is a pit, 9 is a fixed column, 10 is a buffer cylinder, 11 is a spring, 12 is a thin rod, and 13 is an ear plate. DETAILED DESCRIPTION

[0043] The accompanying drawings are specific embodiments of the present invention. Figures 1 to 7As shown, the source plate rack includes a flat box 1, which is like a wardrobe at home. The box 1 is about 180 cm high. A cage is installed on the top of the irradiation room to lift the box 1. The wardrobe is a single-layer double-door 2, and the present invention is a three-layer double-door 2. In order to prevent the double-door 2 from opening automatically, two locking pins 3 can be used to penetrate the three-layer double-door 2 from top to bottom, with one locking pin 3 on each side. An ear plate 13 can be installed at the upper and lower ends of each door, and then holes can be drilled on the ear plate 13 for the locking pin 3 to pass through. In order to avoid affecting the installation of the source rod, a thin rod 12 can be led out first, and then the ear plate 13 is connected to the thin rod 12. Of course, other locks can also be used as long as they play a locking role.

[0044] There is a roller 4 at the upper and lower ends of both sides of the box body 1, with a total of four rollers 4. The rollers 4 are preferably thin in the middle and thick at both ends. A bracket is installed on the ground, and two guide ropes 6 are installed on the bracket. The guide rope 6 is generally a steel wire rope. The lower end of the guide rope 6 is fixed to the bottom of the well 7. The two rollers 4 on each side are stuck on the guide rope 6. When the box body 1 is lifted or lowered, the rollers 4 roll along the guide rope 6 to prevent the box body 1 from deflecting and derailing.

[0045] On the inner side of the double-door 2 is a source rod rack, which is like the test tube rack in a chemical laboratory. The source rod rack can be installed independently, that is, it can be taken down as a whole, or it can be installed as follows: a horizontal support rod 801 is installed on the inner side of each door, one or two are fine, and a number of source rod holes 802 are drilled on the support rod 801. After the source rod is inserted into the source rod hole 802, the lower end is placed on a supporting rod 803. It is best to set some pits 804 on the supporting rod 803 so that the source rod can be placed more stably; the distance between the centers of two adjacent source rod holes 802 is 1.2 to 1.4 cm, preferably 1.3 cm, and the distance between the centers of the two source rod holes 802 closest to the left and right doors is 11 to 12 cm, preferably 11.2 cm.

[0046] The source rod is inserted into the source rod hole 802, and the vertical spacing between two adjacent layers of source rods (i.e., the distance between the lower end of the source rod of the upper layer and the upper end of the source rod of the lower layer) is 15.5 to 16.5 cm, preferably 16 cm.

[0047] There are four fixing columns 9 at the lower end of the box body 1. The lower end of the fixing column 9 is an inverted T-shape. The T-shaped part is inserted into a buffer tube 10, but not inserted to the bottom. The upper edge of the buffer tube 10 is bent inward to form a flange 5. In other words, the upper diameter of the buffer tube 10 is smaller than the inner diameter of its inner cavity. The contact part between the fixing column 9 and the buffer tube 10 is relatively tight. Under normal circumstances, the lower end of the fixing column 9 can be suspended in the buffer tube 10. After exceeding a certain limit, the lower end of the fixing column 9 can overcome the force of close contact. When the box 1 reaches the bottom of the buffer cylinder 10, for example, when the suspension rope breaks during the lifting process of the box body 1, the box body 1 falls from a high place to the bottom of the well. At this time, the strong impact force will overcome the friction between the fixed column 9 and the buffer cylinder 10. After the buffer cylinder 10 falls to the bottom of the well, part of the box body 1 continues to fall until the lower end of the fixed column 9 contacts the bottom of the buffer cylinder 10, which plays a buffering role. In order to further strengthen the buffering force, a spring 11 is also installed at the bottom of the buffer cylinder 10 to achieve a better buffering effect.

[0048] In order to ensure that the box body 1 is stable when located in the well, a base 7 is threadedly connected to each buffer tube 10, and the positions of the base 7 and the buffer tube 10 are adjusted so that the four bases 7 can contact the bottom of the well at the same time.

[0049] like Figures 1 to 3 As shown, this is a source rod arrangement method in actual operation. Figure 1 For the first layer, Figure 2 For the second layer, Figure 3 It is the third layer. The black part is the joint part of the two doors in each layer. The gray part is the source rod hole 802 that has been inserted. The blank part has not been inserted into the source rod hole 802. The blank areas are large and small, which means that some have one source rod hole 802, and some have two or three source rod holes 802. The gray part is also fast and narrow. The same is true. The source strength ratio of each layer is 1:2:1. If necessary, the number of source rods inserted can be increased or decreased at any time, and the position of the source rod can be adjusted at any time. Everything is determined according to actual needs and the activity of the source rod.

[0050] Except for the technical features described in the specification, the other technical features are known to those skilled in the art.

Claims

1. A source plate rack, characterized in that: The invention comprises a flat box (1), wherein the box (1) is provided with a plurality of double-leaf doors (2), and source rod racks are provided on the inner sides of the double-leaf doors (2), wherein the source rod racks are provided with a plurality of evenly distributed source rod holes (802), and the distance between the centers of adjacent source rod holes (802) is 1.2 to 1.4 centimeters; two rollers (4) arranged up and down are provided on both sides of the box (1), and the rollers (4) are closely attached to the guide ropes (6), and the rollers (4) are thin in the middle and thick at both ends; the guide ropes (6) one end is fixed to the bottom of the well, and the other end is fixed to a bracket on the ground; at least two fixing columns (9) are provided at the lower end of the box body (1), and the lower end of the fixing column (9) is in an inverted T-shape. After the inverted T-shaped part is inserted into a buffer tube (10), there is still a distance between the lower end and the inside of the buffer tube (10); the upper end of the buffer tube (10) is folded inward to form a flange (5), and the lower end of the buffer tube (10) is threadedly connected to the base (7); a buffer is provided at the bottom of the buffer tube (10).

2. The source plate rack according to claim 1, characterized in that: The buffer is a spring (11).

3. The source plate rack according to claim 1, characterized in that: The distance between the centers of adjacent source rod holes (802) is 1.3 cm.

4. The source plate rack according to claim 3, characterized in that: The double-leaf doors (2) have three layers in total, each layer has 100 source rod holes (802), each door has 50 source rod holes, and the distance between the centers of the two middle source rod holes (802) is 11 to 12 centimeters.

5. The source plate rack according to claim 4, characterized in that: The distance between the centers of the two middle source rod holes (802) is 11.2 cm.

6. The source plate rack according to claim 4, characterized in that: The vertical spacing between each layer of source rods is 15.6 to 16.5 cm.

7. The source plate rack according to claim 6, characterized in that: The vertical spacing between each layer of source rods is 16 cm.

8. The source plate rack according to claim 1, characterized in that: The double doors (2) are provided with locks.

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