Beta-ray output device

Abstract

The utility model relates to a beta ray output device which comprises a protective outer cover, the protective outer cover comprises a top plate, a bottom plate, a side plate and a connecting frame, a protective inner shell is arranged on the inner side of the protective outer cover and comprises a shell body and a sealing cover plate, a first passing groove is formed in the sealing cover plate, and a rotating disc is arranged in an inner cavity of the shell body. A shielding layer is arranged in an inner cavity of the shell on the outer side of the rotating disc, rotating shafts are arranged on the rotating disc, the side plate, the shell and the rotating disc, a second passing groove is formed in the bottom plate below the first passing groove, a radioactive source mounting groove is formed in the rotating disc, and a radioactive source is arranged in the radioactive source mounting groove. The device can be switched between a use state and a stop state, so that the beta rays can be continuously released to a working area in the working state, and the beta rays can be continuously released to the working area in the stop state; the utility model has the advantages of convenient use and wide market prospect.

Description

Technical Field

[0001] The utility model relates to the field of ray thickness measuring equipment, and particularly relates to a β ray emitter. Background Art

[0002] A ray thickness gauge is an instrument used to measure the thickness of materials and objects. It is often used to continuously or sample-measure the thickness of products in industrial production. According to the type of rays, it can be further divided into an α ray thickness gauge, a β ray thickness gauge, and a γ ray thickness gauge; however, whether it is an α ray thickness gauge, a β ray thickness gauge, or a γ ray thickness gauge, they all conform to the ray attenuation law, that is, the ray passes through the material to be measured, and according to the absorption effect of the material to be measured, the intensity of the ray will be weakened, and the weakening intensity conforms to the exponential attenuation law within a certain range. Among them, the β ray thickness gauge can be applied to the measurement of the surface density of the positive electrode coating of lithium batteries, the negative electrode coating of lithium batteries, and paper. When applied to the lithium battery coating process, the device can be placed after the unwind of the coater and before the coating head to measure the surface density of the substrate to be coated; it can also be placed outside the oven and before the rewind to measure the surface density of the dried electrode.

[0003] The β radiation source is one of the core components of the β ray thickness gauge. The β radiation source is a radiation source mainly characterized by emitting β particles (electrons or positrons); among them, the β source that emits positrons is also called a positron source. They are made of radionuclides that emit β- and β+ particles. The radionuclides used to prepare the β radiation source mainly include tritium, carbon-14, sodium-22, cobalt-58, nickel-63, krypton-85, strontium-90, promethium-147, and thallium-204, etc.; if the definition of the β source is expanded to an electron source, it should also include an internal conversion electron source and an Auger electron source.

[0004] For the β radiation source made of natural radionuclides, since the rays released by natural radionuclides are continuous, there is room for improvement in the β radiation source in the β ray thickness gauge in the prior art. Furthermore, when the β ray thickness gauge is in a deactivated state, the β rays continuously released by the β radiation source in the β ray thickness gauge can be reasonably shielded to reduce the accidental injury to personnel; it should also be realized that when the β ray thickness gauge is in a working state, the β radiation source can continuously release β rays for measurement. Furthermore, it meets the market demand and improves the promotion degree of the β ray thickness gauge. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the utility model provides a β ray emitter that can be switched between a use state and a deactivated state, continuously releases β rays to the working area in the working state, and reduces the continuous release of β rays to the working area in the deactivated state, so as to overcome the defects in the prior art.

[0006] The technical solution adopted by the utility model is as follows: a beta-ray output device, including a protective outer cover, the protective outer cover includes a top plate, a bottom plate arranged below the top plate, and four side plates and connecting frames arranged in sequence and connected end to end between the top plate and the bottom plate. A protective inner shell is arranged inside the protective outer cover. The protective inner shell includes a shell with an opening end facing the bottom plate and a cover plate arranged on the opening end of the shell. A first through groove is opened on the cover plate. A turntable is arranged in the inner cavity of the shell. A shielding layer is arranged in the inner cavity of the shell outside the turntable. The bottom of the turntable is located in the first through groove. A rotating shaft is arranged on the turntable, two parallel side plates, the shell and the turntable. A second through groove is opened on the bottom plate below the first through groove. A radiation source installation groove is opened on the turntable, and a radiation source is arranged in the radiation source installation groove.

[0007] Preferably, a driven gear is arranged on the rotating shaft between the shell and the side plate. A driving gear is arranged on the shell on one side of the driven gear. The driving gear and the driven gear are meshed with each other. A first connecting plate is arranged on the shell close to the driven gear. The cylinder body of a driving cylinder is hinged on the first connecting plate. One end of a transmission rod is hinged on the driving gear, and a coupling is arranged between the other end of the transmission rod and the output end of the driving cylinder.

[0008] Preferably, a first limiting plate and a second limiting plate are arranged between the side plate far from the driven gear and the shell. The first limiting plate and the second limiting plate are respectively located on both sides of the rotating shaft. First adjusting grooves are respectively opened on the first limiting plate and the second limiting plate. A first bolt is respectively arranged on each first adjusting groove and the shell. A first swing arm is arranged on the rotating shaft between the first limiting plate and the second limiting plate.

[0009] Preferably, both the first limiting plate and the second limiting plate adopt a plate-like structure composed of a longitudinal plate and a transverse plate. The first adjusting groove is located on the longitudinal plate. The first adjusting groove adopts a long-strip groove-like structure. At least two mutually parallel first adjusting grooves are distributed on both the first limiting plate and the second limiting plate. The first swing arm is located between the transverse plates of the first limiting plate and the second limiting plate.

[0010] Preferably, a first photoelectric switch is arranged on the side of the first limiting plate far from the rotating shaft. A second photoelectric switch is arranged on the side of the second limiting plate far from the rotating shaft. An induction plate is arranged on the second photoelectric switch and the first swing arm. Second connecting plates are respectively arranged between the first photoelectric switch and the shell and between the shell and the second photoelectric switch.

[0011] Preferably, a third limiting plate is provided on one side plate outside the rotating shaft. The third limiting plate is sleeved on the rotating shaft. A second swing arm is provided on the rotating shaft on the side away from the side plate of the third limiting plate. A first limiting groove is formed in the third limiting plate on one side of the rotating shaft. A limiting clamping plate is provided on the first limiting groove and the second swing arm. The limiting clamping plate is movably connected to the first limiting groove and is hinged to the second swing arm. A second limiting groove is formed in the third limiting plate on the side of the rotating shaft away from the first limiting groove.

[0012] Preferably, a marking disc is provided on the side plate on the side of the rotating shaft away from the third limiting plate. A marking line is provided on the marking disc. A pointer is provided on the rotating shaft on one side of the marking line. The width of the pointer gradually becomes smaller as the pointer gradually moves away from the rotating shaft.

[0013] The beneficial effects of the present utility model are as follows: By rotating the rotating shaft, the turntable and the radiation source installed on the turntable are driven to rotate, so as to realize the switching between the use state and the stop state. And when the product is in the stop state, the radiation source faces the shielding layer, which greatly reduces the β rays released by the radiation source to the outside world; while when the product is in the use state, the radiation source faces the ray release channels where the first through groove and the second through groove are located, and continuously releases β rays for measurement, thus realizing the safe application of the radiation source made of natural nuclides and being conducive to market promotion.

[0014] The present utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improving the work efficiency, having good social and economic benefits, and being a product easy to be popularized and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional structure view of the present utility model.

[0016] Figure 2 It is a schematic structure view of the turntable of the present utility model.

[0017] Figure 3 It is a bottom view of the present utility model.

[0018] Figure 4 It is a front view of the present utility model.

[0019] Figure 5 It is a schematic three-dimensional structure view of the present utility model.

[0020] Figure 6 It is a schematic structure view of the components of the present utility model.

[0021] Figure 7 It is a schematic structure view of the components of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] As Figures 1 to 7As shown in the figure, a beta-ray emitter includes a protective outer cover. The protective outer cover adopts a rectangular box structure. The protective outer cover includes a top plate 1, a bottom plate 2 arranged below the top plate 1, and four side plates 3 and a connecting frame 4 arranged between the top plate 1 and the bottom plate 2 and connected end to end in sequence. A protective inner shell is arranged inside the protective outer cover. The protective inner shell includes a shell 5 with an open end facing the bottom plate 2 and a cover plate 6 arranged on the open end of the shell 5. A first through groove 7 is opened on the cover plate 6. A turntable 8 is arranged in the inner cavity of the shell 5. A shielding layer 9 is arranged in the inner cavity of the shell 5 outside the turntable 8. The material of the shielding layer 9 is made of metallic lead. The bottom of the turntable 8 is located in the first through groove 7. A rotating shaft 10 is arranged on the turntable 8, two mutually parallel side plates 3, the shell 5 and the turntable 8. A second through groove 11 is opened on the bottom plate 2 below the first through groove 7. A radioactive source installation groove 12 is opened on the turntable 8. A radioactive source 13 is arranged in the radioactive source installation groove 12. A fixing plate 14 is arranged outside the radioactive source 13. A third bolt 15 is arranged on the fixing plate 14 and the turntable 8. A ray passing hole 16 is arranged on the fixing plate 14. Second bolts 17 are respectively arranged on the top plate 1 and the connecting frame 4, the bottom plate 2 and the connecting frame 4, and each side plate 3 and the connecting frame 4. Bearing seats 25 are respectively arranged on the rotating shafts 10 on both sides of the shell 5. The outside of the bearing seats 25 is provided with bearings 24, and the bearing seats 25 are connected to the shell 5.

[0023] A driven gear 18 is arranged on the rotating shaft 10 between the shell 5 and the side plate 3. A driving gear 19 is arranged on the shell 5 on one side of the driven gear 18. The driving gear 19 is meshed with the driven gear 18. A first connecting plate 20 is arranged on the shell 5 close to the driven gear 18. The cylinder body of a driving cylinder 21 is hinged on the first connecting plate 20. One end of a transmission rod 22 is hinged on the driving gear 19. A coupling 23 is arranged at the other end of the transmission rod 22 and the output end of the driving cylinder 21. Thus, it is convenient to realize that the output end of the driving cylinder 21 is driven, and the driving force is transmitted through the transmission rod 22, the driving gear 19 and the driven gear 18 to drive the rotating shaft 10 to rotate, and then drive the turntable 8 to rotate, so that the position of the radioactive source 13 on the turntable 8 changes, so that the radioactive source 13 reaches the ray release channel where the first through groove 7 and the second through groove 11 are located in the use state, and faces the shielding layer 9 in the deactivated state of the radioactive source 13, thereby reducing the amount of rays released by the radioactive source 13 to the working area in the deactivated state.

[0024] Furthermore, a first limiting plate 26 and a second limiting plate 27 are provided between the side plate 3 on the side away from the driven gear 18 and the housing 5. The first limiting plate 26 and the second limiting plate 27 are respectively located on both sides of the rotating shaft 10. First adjusting grooves 28 are respectively formed on the first limiting plate 26 and the second limiting plate 27. A first bolt 29 is respectively provided on each first adjusting groove 28 and the housing 5. A first swing arm 30 is provided on the rotating shaft 10 between the first limiting plate 26 and the second limiting plate 27. Thus, by using the first swing arm 30 installed on the rotating shaft 10 in combination with the first limiting plate 26 and the second limiting plate 27 installed on the housing 5, the displacement amount that the rotating shaft 10 can rotate is limited. When the first swing arm 30 is in contact with the first limiting plate 26 and combined with the continuous acting force released by the driving cylinder 21, the radiation source 13 rotates to a preset rotation direction within the radiation release channel where the first through groove 7 and the second through groove 11 are located, so that the radiation source 13 releases β-rays in the target direction through the radiation release channel. When the first swing arm 30 is in contact with the second limiting plate 27 and combined with the continuous acting force released by the driving cylinder 21, when the product is in a deactivated state, it reaches a preset target orientation towards the shielding layer 9, thereby reducing the amount of rays released by the radiation source 13 into the radiation release channel.

[0025] Furthermore, as the product switches between the deactivated state and the used state more frequently, the first limiting plate 26 and the second limiting plate 27 are prone to slight displacement. Especially when the position of the first limiting plate 26 is offset, when the first swing arm 30 is in contact with the first limiting plate 26, the orientation of the radiation source 13 will also be offset. As a result, the direction of the β-rays released by the radiation source 13 will deviate from the preset target direction, causing the feedback data of the β-ray thickness gauge installed with this product to deviate. Therefore, both the first limiting plate 26 and the second limiting plate 27 adopt a plate-like structure composed of a longitudinal plate and a transverse plate. The first adjusting groove 28 is located on the longitudinal plate. The first adjusting groove 28 adopts a long-strip groove-like structure. At least two mutually parallel first adjusting grooves 28 are distributed on both the first limiting plate 26 and the second limiting plate 27. The first swing arm 30 is located between the transverse plates of the first limiting plate 26 and the second limiting plate 27. Thus, by adjusting several first bolts 29 of the first limiting plate 26, the relative position of the first limiting plate 26 is adjusted, so that the first limiting plate 26 reaches its preset installation position again. Similarly, by adjusting several first bolts 29 of the second limiting plate 27, the relative position of the second limiting plate 27 is adjusted, so that the second limiting plate 27 reaches its preset installation position again.

[0026] On one side of the first limiting plate 26 away from the rotating shaft 10, a first photoelectric switch 31 is provided. On one side of the second limiting plate 27 away from the rotating shaft 10, a second photoelectric switch 32 is provided. An induction plate 33 is provided on the second photoelectric switch 32 and the first swing arm 30. Second connecting plates 34 are respectively provided between the first photoelectric switch 31 and the housing 5 and between the housing 5 and the second photoelectric switch 32. Both the first photoelectric switch 31 and the second photoelectric switch 32 adopt groove-type photoelectric switches. The induction plate 33 adopts an L-shaped plate structure. When the first swing arm 30 and the first limiting plate 26 are in contact, a part of the induction plate 33 is located inside the first photoelectric switch 31, and the first photoelectric switch 31 stops continuously transmitting signals outward. Thus, the staff can indirectly know that the first swing arm 30 and the first limiting plate 26 have reached the contact state. Similarly, when the first swing arm 30 and the second limiting plate 27 are in contact, a part of the induction plate 33 is located inside the second photoelectric switch 32, and the second photoelectric switch 32 stops continuously transmitting signals outward. Thus, the staff can indirectly know that the first swing arm 30 and the second limiting plate 27 have reached the contact state. Moreover, second pin shafts 44 are respectively provided on each second connecting plate 34 and the housing 5. Second adjusting grooves 45 are respectively provided on each second connecting plate 34. Each second adjusting groove 45 adopts an arc-shaped groove structure. Fourth bolts 46 are respectively provided on each second adjusting groove 45 and the housing 5. Thus, it is convenient to adjust the relative position of the corresponding second connecting plate 34 and further adjust the relative position of the first photoelectric switch 31 or the relative position of the second photoelectric switch 32.

[0027] A third limiting plate 35 is provided on one side plate 3 outside the rotating shaft 10. The third limiting plate 35 is sleeved on the rotating shaft 10. A second swing arm 36 is provided on the rotating shaft 10 on the side away from the side plate 3 of the third limiting plate 35. A first limiting groove 37 is formed on the third limiting plate 35 on one side of the rotating shaft 10. A limiting clamping plate 38 is provided on the first limiting groove 37 and the second swing arm 36. The limiting clamping plate 38 is movably connected with the first limiting groove 37. The limiting clamping plate 38 is hinged on the second swing arm 36 through a first pin shaft 39. The central axis of the first pin shaft 39 is perpendicular to the central axis of the rotating shaft 10. A second limiting groove 40 is formed on the third limiting plate 35 on the side of the rotating shaft 10 away from the first limiting groove 37.

[0028] When the first swing arm 30 is in contact with the first limit plate 26, the radiation source 13 is in the preset direction corresponding to the use state. The limit clamping plate 38 is located outside the first limit groove 37. Rotate the limit clamping plate 38 so that a part of the limit clamping plate 38 rotates into the first limit groove 37, preventing the rotation shaft 10 from rotating during the normal use of the radiation source 13, thus avoiding the relative position of the radiation source 13 from shifting. When the first swing arm 30 is in contact with the second limit plate 27, it is in the preset direction corresponding to the deactivated position. The limit clamping plate 38 is located outside the second limit groove 40. Rotate the limit clamping plate 38 so that a part of the limit clamping plate 38 rotates into the second limit groove 40, thereby preventing the rotation shaft 10 from rotating and further preventing the relative orientation of the radiation source 13 from deflecting.

[0029] On the side plate 3 of the rotation shaft 10 away from the third limit plate 35, there is a marking disc 41. On the marking disc 41, there is a marking line 42. On the rotation shaft 10 on one side of the marking line 42, there is a pointer 43. The width of the pointer 43 gradually decreases as the pointer 43 gradually moves away from the rotation shaft 10. When the product is in the use state, the plane where the tip of the pointer 43 is located and the plane where the marking line 42 is located are in the same plane. Thus, it is convenient to use the orientation of the pointer 43 to determine whether the orientation corresponding to the use state of the radiation source 13 is in the preset direction, and further determine whether the product needs maintenance.

[0030] The usage method of this product is as follows, as Figures 1 to 7 shown, including the following steps:

[0031] When this product is in the deactivated state, at this time, the first swing arm 30 is in contact with the second limit plate 27, the radiation source 13 is oriented towards the preset position inside the shielding layer 9, a part of the induction plate 33 is located inside the second photoelectric switch 32 and the output end of the driving cylinder 21 is in the retracted state, and a part of the limit clamping plate 38 is located inside the second limit groove 40.

[0032] When the product needs to be converted from the deactivated state to the used state, first, the limit clamping plate 38 needs to be rotated until the limit clamping plate 38 is completely located outside the second limit groove 40. Then, the driving cylinder 21 is opened, and the driving cylinder 21 drives the transmission rod 22 to move and drives the driving gear 19 to rotate. The driving gear 19 drives the driven gear 18 to rotate, thereby driving the rotating shaft 10 to rotate. The rotating shaft 10 drives the turntable 8, the first swing arm 30 and the second swing arm 36 to rotate synchronously. Then, when the first swing arm 30 abuts against the first limit plate 26, at this time, the radiation source 13 is located above the radiation release channel where the first through groove 7 and the second through groove 11 are located, and the radiation source 13 faces the preset direction in the radiation release channel. The radiation source 13 continuously releases β-rays collimated by the radiation through holes 16 into the radiation release channel for measurement. The limit clamping plate 38 is located outside the first limit groove 37, and part of the induction plate 33 is located in the first photoelectric switch 31. The first photoelectric switch 31 stops continuously transmitting signals outward, facilitating the staff to know the state where the first swing arm 30 abuts against the first limit plate 26. Finally, the limit clamping plate 38 is rotated until part of the limit clamping plate 38 is located inside the first limit groove 37, and the product is completely in the used state.

[0033] Through this embodiment, by rotating the rotating shaft 10, the turntable 8 and the radiation source 13 installed on the turntable 8 are driven to rotate, so as to realize the switching between the used state and the deactivated state. And when the product is in the deactivated state, the radiation source 13 faces the shielding layer 9, which greatly reduces the β-rays released by the radiation source 13 to the outside world; while when the product is in the used state, the radiation source 13 continuously releases β-rays into the radiation release channel where the first through groove 7 and the second through groove 11 are located for measurement, thus realizing the safe application of the radiation source 13 made of natural nuclides, which is conducive to market promotion.

[0034] The above-mentioned embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the present invention patent should be included in the scope of the patent application of the present invention.

Claims

1. A beta-ray output device, characterized in that: It includes a protective outer cover. The protective outer cover includes a top plate (1), a bottom plate (2) arranged below the top plate (1), and four side plates (3) and connecting frames (4) that are sequentially connected end to end between the top plate (1) and the bottom plate (2). A protective inner shell is arranged inside the protective outer cover. The protective inner shell includes a shell (5) with an open end facing the bottom plate (2) and a cover plate (6) arranged on the open end of the shell (5). A first through groove (7) is opened on the cover plate (6). A turntable (8) is arranged in the inner cavity of the shell (5). A shielding layer (9) is arranged in the inner cavity of the shell (5) outside the turntable (8). The bottom of the turntable (8) is located in the first through groove (7). A rotating shaft (10) is arranged on the turntable (8), two parallel side plates (3), the shell (5) and the turntable (8). A second through groove (11) is opened on the bottom plate (2) below the first through groove (7). A radiation source installation groove (12) is opened on the turntable (8), and a radiation source (13) is arranged in the radiation source installation groove (12).

2. The β-ray output device according to claim 1, characterized in that: A driven gear (18) is arranged on the rotating shaft (10) between the shell (5) and the side plate (3). A driving gear (19) is arranged on the shell (5) on one side of the driven gear (18). The driving gear (19) meshes with the driven gear (18). A first connecting plate (20) is arranged on the shell (5) close to the driven gear (18). The cylinder body of a driving cylinder (21) is hinged on the first connecting plate (20). One end of a transmission rod (22) is hinged on the driving gear (19), and a coupling (23) is arranged at the other end of the transmission rod (22) and the output end of the driving cylinder (21).

3. The beta-ray output device according to claim 2, wherein: A first limiting plate (26) and a second limiting plate (27) are arranged between the side plate (3) and the shell (5) on the side far from the driven gear (18). The first limiting plate (26) and the second limiting plate (27) are respectively located on both sides of the rotating shaft (10). First adjusting grooves (28) are respectively opened on the first limiting plate (26) and the second limiting plate (27). A first bolt (29) is respectively arranged on each first adjusting groove (28) and the shell (5). A first swing arm (30) is arranged on the rotating shaft (10) between the first limiting plate (26) and the second limiting plate (27).

4. The β-ray output device according to claim 3, characterized in that: Both the first limiting plate (26) and the second limiting plate (27) adopt a plate-like structure composed of a longitudinal plate and a transverse plate. The first adjusting groove (28) is located on the longitudinal plate. The first adjusting groove (28) adopts a long strip-shaped groove structure. At least two parallel first adjusting grooves (28) are distributed on both the first limiting plate (26) and the second limiting plate (27). The first swing arm (30) is located between the transverse plates of the first limiting plate (26) and the second limiting plate (27).

5. The beta ray output device according to claim 3, wherein: A first photoelectric switch (31) is arranged on one side of the first limiting plate (26) away from the rotating shaft (10), a second photoelectric switch (32) is arranged on one side of the second limiting plate (27) away from the rotating shaft (10), an induction plate (33) is arranged on the second photoelectric switch (32) and the first swing arm (30), and second connecting plates (34) are respectively arranged between the first photoelectric switch (31) and the housing (5) and between the housing (5) and the second photoelectric switch (32).

6. The β-ray output device according to claim 1, wherein: A third limiting plate (35) is arranged on a side plate (3) outside the rotating shaft (10). The third limiting plate (35) is sleeved on the rotating shaft (10). A second swing arm (36) is arranged on the rotating shaft (10) on the side of the third limiting plate (35) away from the side plate (3). A first limiting groove (37) is formed in the third limiting plate (35) on one side of the rotating shaft (10). A limiting clamping plate (38) is arranged on the first limiting groove (37) and the second swing arm (36). The limiting clamping plate (38) is movably connected with the first limiting groove (37). The limiting clamping plate (38) is hinged to the second swing arm (36). A second limiting groove (40) is formed in the third limiting plate (35) on the side of the rotating shaft (10) away from the first limiting groove (37).

7. The β-ray output device according to claim 6, wherein: A marking disc (41) is arranged on the side plate (3) on the side of the rotating shaft (10) away from the third limiting plate (35). A marking line (42) is arranged on the marking disc (41). A pointer (43) is arranged on the rotating shaft (10) on one side of the marking line (42). The width of the pointer (43) gradually becomes smaller as the pointer (43) gradually moves away from the rotating shaft (10).

Images