Waterproof device for photomultiplier

Abstract

The invention discloses a waterproof device for a photomultiplier, and relates to the technical field of photomultipliers. The device comprises a pipe body and a connecting base, the pipe body can be inserted into the connecting base in a sliding mode, a locking groove, a first sealing groove and a second sealing groove which are used in a matched mode are formed in the pipe body, a lock catch mechanism used in cooperation with the pipe body is arranged at the upper end of the connecting base, and the lock catch mechanism comprises a lock catch lead screw, a lock catch sliding block, a driven gear and a lock catch inserting rod; through the arrangement and use of a lock catch mechanism, four driven gears can be synchronously driven to rotate, so that four lock catch lead screws can be driven to synchronously rotate, four lock catch sliding blocks can be driven to synchronously perform center gathering movement, and four lock catch inserting rods which are vertically distributed can be driven to synchronously perform center gathering movement and be synchronously inserted into lock grooves; and compared with the limiting of the original two locking blocks which are symmetrically distributed, the mounting stability of the photomultiplier is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of photomultiplier tube technology, specifically a waterproof device for photomultiplier tubes. Background Technology

[0002] Photomultiplier tubes are vacuum electronic devices that convert weak light signals into electrical signals. They are widely used in metallurgy, electronics, machinery, chemical industry, geology, medicine, nuclear industry, astronomy and space research.

[0003] Patent CN113327835B discloses a waterproof device for a photomultiplier tube, including a tube body, a connector at the bottom of the tube body and a connecting wire connected to the right end of the connector, and the bottom of the tube body is fixedly connected with connecting posts arranged in a ring array.

[0004] While existing technologies have achieved both locking installation and dynamic integrated sealing, they still have certain shortcomings in use: 1. Using two symmetrically distributed locking blocks for limiting and locking cannot stably center and limit the photomultiplier tube, resulting in poor installation stability of the photomultiplier tube; 2. The method of using an L-shaped rotating frame to intermittently compress the first sealing ring for sealing cannot ensure that the sealing ring fully fits the first sealing groove, resulting in a poor sealing effect; 3. Although two sealing mechanisms are provided, they are located on opposite sides of the electrical connection post and cannot form a double-sealed waterproof protection at the connection point between the electrical connection post and the electrical connection ring. Therefore, only a single-sealed waterproof protection can be formed, resulting in poor sealing and waterproofing effect.

[0005] To address the aforementioned problems, this application proposes a waterproof device for photomultiplier tubes. Summary of the Invention

[0006] To address the problems of existing technologies that fail to stably center and limit the photomultiplier tube by using two symmetrically distributed locking blocks, fail to ensure the sealing ring fully fits the first sealing groove by using an L-shaped rotating frame to intermittently compress the first sealing ring, and fail to provide double-sealed waterproof protection at the connection between the electrode post and the electrode ring, the present invention aims to provide a waterproof device for photomultiplier tubes.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a waterproof device for a photomultiplier tube, comprising a tube body and a connecting seat, wherein the tube body can be slidably inserted into the connecting seat, and the tube body is provided with a locking groove, a first sealing groove and a second sealing groove for cooperation; the upper end of the connecting seat is provided with a locking mechanism for cooperation with the tube body, and the locking mechanism includes a locking screw, a locking slider, a driven gear and a locking insert rod; the lower end of the inner cavity of the connecting seat is provided with a first sealing mechanism for cooperation with the tube body, and the first sealing mechanism includes a sealing annular airbag, a lifting horizontal plate, a driven pressure rod and a telescopic airbag; the bottom of the inner cavity of the connecting seat is provided with a second sealing mechanism for cooperation with the tube body and the first sealing mechanism, and the second sealing mechanism includes a second spring and an annular sealing ring. The locking mechanism synchronously drives four driven gears to rotate, which in turn drives four locking screws to rotate synchronously. This, in turn, drives four locking sliders to move synchronously towards the center, which in turn drives four locking rods that are perpendicular to each other to move synchronously towards the center and into the locking groove. The first sealing mechanism synchronously pushes down four driven pressure rods when the tube body is installed with the connecting seat, which in turn drives four lifting horizontal plates to move synchronously down and squeeze four telescopic airbags. This causes the sealing ring airbags to gradually inflate and expand, ensuring that the sealing ring airbags fully squeeze and fit against the first sealing groove after the tube body is inserted. The second sealing mechanism causes the annular sealing ring to be inserted into the second sealing groove when the tube body is installed with the connecting seat. As the tube body is inserted, the annular sealing ring and the second spring are squeezed synchronously, ensuring that the annular sealing ring fully squeezes and fits against the second sealing groove after the tube body is inserted.

[0008] Preferably, the locking mechanism further includes a locking shaft. The upper end of the connecting seat has a mating mounting cavity, a first inner groove, and a second inner groove, all arranged in an array. The locking shaft is rotatably inserted between the mounting cavity and the first inner groove. A driven gear is fixedly mounted on the top of the locking shaft and rotatably mounted in the mounting cavity. A drive gear ring is rotatably mounted in the mounting cavity, and a drive ring is fixedly mounted on the inner side of the drive gear ring. The upper end of the connecting seat has a through-hole that communicates with the mounting cavity. A rotating ring groove is installed in the rotating ring groove, and the top of the connecting seat is provided with an operating ring groove that works with the driving ring. The operating ring groove is connected to the rotating ring groove. The driving gear ring meshes with the driven gear. A first bevel gear is fixedly installed at the end of the locking shaft away from the driven gear. The locking screw is rotatably inserted between the first inner groove and the second inner groove. A second bevel gear is fixedly installed at one end of the locking screw. The second bevel gear and the first bevel gear are both rotatably installed in the first inner groove, and the second bevel gear meshes with the first bevel gear. The locking slider is slidably inserted into the second inner groove, and a locking screw hole is opened on one side of the locking slider. The locking screw is threaded into the locking screw hole, and the locking rod is fixedly installed on the side of the locking slider away from the locking screw hole. The locking rod can slide through the connecting seat and slide into the locking groove.

[0009] Preferably, the first sealing mechanism further includes vertical guide rods, which are fixedly inserted into the bottom end of the inner cavity of the connecting seat and are arranged in an array. The bottom end of the inner cavity of the connecting seat has an array of mounting holes, and the vertical guide rods are fixedly inserted into adjacent mounting holes. A lifting horizontal plate is slidably sleeved on the vertical guide rods, and a driven pressure rod is fixedly installed on one side of the top of the lifting horizontal plate. A vertical guide hole is provided through the lifting horizontal plate, and the vertical guide rod slides through the vertical guide hole. The bottom end of the tube can contact the driven pressure rod. A first spring is fixedly installed on the side of the lifting horizontal plate away from the driven pressure rod, and the bottom end of the first spring is fixedly connected to the bottom of the inner cavity of the connecting seat. The telescopic airbag is fixedly installed on the end of the lifting horizontal plate near the first spring. A connecting hose is fixedly connected to the top of the telescopic airbag and moves through the lifting horizontal plate. An annular groove is provided on the side wall of the connecting seat, and the sealing annular airbag is movably inserted into the annular groove. The connecting hose moves through the connecting seat and communicates with the sealing annular airbag. The side wall of the sealing annular airbag near the connecting hose is fixedly connected to the annular groove. A connecting hole is provided through one end of the lifting horizontal plate, and the connecting hose moves through the connecting hole. A connecting through hole is provided through the lower end of the inner cavity of the connecting seat and communicates with the annular groove. The connecting hose moves through the connecting through hole.

[0010] Preferably, the second sealing mechanism further includes a lifting slide plate. The bottom of the inner cavity of the connecting seat is provided with an array of mounting recesses, and the lifting slide plate is slidably inserted into the mounting recesses. The second spring is fixedly installed at the bottom end of the lifting slide plate, and the bottom end of the second spring is fixedly connected to the bottom of the inner cavity of the mounting recesses. A lifting vertical rod is fixedly installed at the top center of the lifting slide plate, and a lifting sealing ring is fixedly connected to the top of the four lifting vertical rods. An annular sealing ring is fixedly installed at the top of the lifting sealing ring, and an annular rubber ring is fixedly connected between the lifting sealing ring and the bottom of the inner cavity of the connecting seat.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting and using the locking mechanism, four driven gears can be driven to rotate synchronously, which in turn drives four locking screws to rotate synchronously, which in turn drives four locking sliders to move synchronously to center and converge, which in turn drives four locking rods that are perpendicular to each other to move synchronously to center and converge and insert into the locking groove. Therefore, compared with the original two locking blocks that are symmetrically distributed, this application effectively improves the stability of photomultiplier tube installation. 2. By setting and using the first sealing mechanism, four driven pressure rods can be pushed down synchronously when the pipe body is installed with the connecting seat. This drives the four lifting horizontal plates to move down synchronously and squeeze the four telescopic airbags. This allows the sealing ring airbags to gradually inflate and expand. After the pipe body is inserted and installed, the sealing ring airbags can fully squeeze and fit the first sealing groove. Compared with the original L-shaped rotating frame's method of intermittently squeezing the first sealing ring, this application has a higher fit and thus effectively improves the sealing effect. 3. By using the second sealing mechanism, the annular sealing ring can be inserted into the second sealing groove when the pipe body and the connecting seat are installed together. As the pipe body is inserted, the annular sealing ring and the second spring will be squeezed simultaneously. This allows the annular sealing ring to be fully squeezed and fitted into the second sealing groove after the pipe body is installed. This forms a double-seal waterproof protection at the connection between the electrode post and the electrode ring. Compared with the original single-seal waterproof protection, the sealing and waterproof effect of this application is better, thus further improving the sealing effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the pipe installation in this invention.

[0015] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0016] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B.

[0017] Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the structure at point C.

[0018] Figure 6 This is a schematic diagram of the locking mechanism connection in this invention.

[0019] Figure 7 This is a schematic diagram of the connection of the first sealing mechanism in this invention.

[0020] Figure 8 This is a schematic diagram of the connection of the second sealing mechanism in this invention.

[0021] In the diagram: 1. Pipe body; 11. Locking groove; 12. First sealing groove; 2. Connecting seat; 21. Mounting cavity; 22. First inner groove; 23. Second inner groove; 24. Rotating ring groove; 25. Operating ring groove; 26. Annular recess; 27. Mounting insertion hole; 28. Connecting through hole; 29. ​​Mounting recess; 3. Locking mechanism; 31. Locking shaft; 32. Locking screw; 33. Locking slider; 34. Driven gear; 35. Drive gear ring; 36. First bevel gear; 37. Second bevel gear; 8. Locking screw hole; 39. Locking rod; 310. Drive rotating ring; 4. First sealing mechanism; 41. Vertical guide rod; 42. Sealing annular airbag; 43. Lifting horizontal plate; 44. Driven pressure rod; 45. First spring; 46. Telescopic airbag; 47. Connecting hose; 48. Vertical guide hole; 49. Connecting through hole; 5. Second sealing mechanism; 51. Lifting slide plate; 52. Second spring; 53. Lifting vertical rod; 54. Lifting sealing ring; 55. Annular sealing ring; 56. Annular rubber ring. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example: Figures 1-8 As shown, the present invention provides a waterproof device for a photomultiplier tube, including a tube body 1 and a connecting seat 2. The tube body 1 can be slidably inserted into the connecting seat 2, and the tube body 1 is provided with a locking groove 11, a first sealing groove 12 and a second sealing groove for cooperation. The upper end of the connecting seat 2 is provided with a locking mechanism 3 for cooperation with the tube body 1, and the locking mechanism 3 includes a locking screw 32, a locking slider 33, a driven gear 34 and a locking insert 39. The lower end of the inner cavity of the connecting seat 2 is provided with a first sealing mechanism 4 for cooperation with the tube body 1, and the first sealing mechanism 4 is a first sealing groove for cooperation with the tube body 1. The sealing mechanism 4 includes a sealing annular airbag 42, a lifting horizontal plate 43, a driven pressure rod 44, and a telescopic airbag 46. The bottom of the inner cavity of the connecting seat 2 is provided with a second sealing mechanism 5 that works in conjunction with the tube body 1 and the first sealing mechanism 4. The second sealing mechanism 5 includes a second spring 52 and an annular sealing ring 55. The tube body 1 also includes a power connection post and an inner threaded tube for use. The second sealing groove is opened at the bottom end of the tube body 1 and is located outside the power connection post. In addition, the connecting seat 2 also includes an external threaded rod, a power connection wire, and a push switch for use. The locking mechanism 3 is designed to synchronously drive the four driven gears 34 to rotate, thereby driving the four locking screws 32 to rotate synchronously, which in turn drives the four locking sliders 33 to move synchronously towards the center. This, in turn, drives the four locking rods 39, which are perpendicular to each other, to move synchronously towards the center and into the locking groove 11. The first sealing mechanism 4 is designed to synchronously push down the four driven pressure rods 44 when the tube body 1 is installed with the connecting seat 2, thereby driving the four lifting horizontal plates 43 to move synchronously downwards and into the locking groove 11. The four telescopic airbags 46 are squeezed step by step, which in turn causes the sealing annular airbag 42 to gradually inflate and expand. This allows the sealing annular airbag 42 to fully compress and fit against the first sealing groove 12 after the tube body 1 is inserted and installed. The second sealing mechanism 5 is used so that when the tube body 1 is connected to the connecting seat 2, the annular sealing ring 55 can be inserted into the second sealing groove. As the tube body 1 is inserted, the annular sealing ring 55 and the second spring 52 will be squeezed simultaneously, so that the annular sealing ring 55 can fully compress and fit against the second sealing groove after the tube body 1 is inserted and installed.

[0024] The locking mechanism 3 also includes a locking shaft 31. The upper end of the connecting seat 2 has a mounting cavity 21, a first inner groove 22, and a second inner groove 23 for cooperation. The mounting cavity 21, the first inner groove 22, and the second inner groove 23 are arranged in an array. The locking shaft 31 is rotatably inserted between the mounting cavity 21 and the first inner groove 22. A driven gear 34 is fixedly installed at the top of the locking shaft 31 and rotatably installed inside the mounting cavity 21. A drive gear ring 35 is rotatably installed inside the mounting cavity 21, and a drive ring 310 is fixedly installed on the inner side of the drive gear ring 35. The upper end of the connecting seat 2 has a through-hole rotating ring groove 24 that communicates with the mounting cavity 21, and the drive ring 310 is rotatably installed on the rotating ring groove. Inside the groove 24, the top of the connecting seat 2 is provided with an operating ring groove 25 that works with the drive rotating ring 310. The operating ring groove 25 is connected to the rotating ring groove 24. The working of the operating ring groove 25 and the drive rotating ring 310 facilitates the convenient rotation of the drive gear ring 35. The drive gear ring 35 meshes with the driven gear 34. The first bevel gear 36 is fixedly installed at the end of the locking shaft 31 away from the driven gear 34. The locking screw 32 is rotatably inserted between the first inner groove 22 and the second inner groove 23. The second bevel gear 37 is fixedly installed at one end of the locking screw 32. The second bevel gear 37 and the first bevel gear 36 are both rotatably installed in the first inner groove 22, and the second bevel gear 37 meshes with the first bevel gear 36. The locking slider 33 is slidably inserted into the second inner groove 23, and a locking screw hole 38 is provided on one side of the locking slider 33. The locking screw 32 is threaded into the locking screw hole 38, and the locking rod 39 is fixedly installed on the side of the locking slider 33 away from the locking screw hole 38. The locking rod 39 can slide through the connecting seat 2 and slide into the locking groove 11.

[0025] By adopting the above technical solution, when in use, the tube body 1 is fully inserted into the corresponding connecting seat 2, and then the drive ring 310 is rotated, which drives the drive gear ring 35 to rotate, and then drives the four driven gears 34 to rotate synchronously, which in turn drives the four first bevel gears 36 to rotate synchronously through the locking shaft 31, and then drives the four second bevel gears 37 to rotate synchronously, which in turn drives the four locking screws 32 to rotate synchronously, and then drives the four locking sliders 33 to move synchronously in a centered and converged manner, which in turn drives the four locking rods 39 that are perpendicular to each other to move synchronously in a centered and converged manner and to be inserted into the locking groove 11 synchronously.

[0026] The first sealing mechanism 4 also includes a vertical guide rod 41, which is fixedly inserted into the bottom end of the inner cavity of the connecting seat 2. The vertical guide rods 41 are arranged in an array. The bottom end of the inner cavity of the connecting seat 2 has an array of mounting holes 27, and the vertical guide rods 41 are fixedly inserted into adjacent mounting holes 27. The mounting holes 27 provide a guarantee for the stable insertion of the vertical guide rods 41. The lifting horizontal plate 43 is slidably sleeved on the vertical guide rod 41, and the driven pressure rod 44 is fixedly installed on one side of the top of the lifting horizontal plate 43. A vertical guide hole 48 is opened through the lifting horizontal plate 43, and the vertical guide rod 41 slides through the vertical guide hole 48. The vertical guide hole 48 limits and guides the movement adjustment of the lifting horizontal plate 43. The bottom end of the tube body 1 can contact the driven pressure rod 44, and a first spring 45 is fixedly installed on the side of the lifting horizontal plate 43 away from the driven pressure rod 44. The bottom end of the first spring 45 is connected to the connecting seat 2. The bottom of the inner cavity is fixedly connected, and the telescopic airbag 46 is fixedly installed on the side end of the lifting horizontal plate 43 near the first spring 45. The top of the telescopic airbag 46 is fixedly connected to the connecting hose 47, and the connecting hose 47 moves through the lifting horizontal plate 43. An annular groove 26 is opened on the side wall of the connecting seat 2, and the sealing annular airbag 42 is movably inserted into the annular groove 26. The connecting hose 47 moves through the connecting seat 2 and communicates with the sealing annular airbag 42. The side wall of the sealing annular airbag 42 near the connecting hose 47 is fixedly connected to the annular groove 26. A connecting through hole 49 is opened through one end of the lifting horizontal plate 43, and the connecting hose 47 moves through the connecting through hole 49. A connecting through hole 28 is opened through the lower end of the inner cavity of the connecting seat 2 and communicates with the annular groove 26. The connecting hose 47 moves through the connecting through hole 28. The cooperation between the connecting through hole 28 and the connecting through hole 49 ensures the normal movement of the connecting hose 47.

[0027] By adopting the above technical solution, when in use, the four driven pressure rods 44 can be pushed down synchronously when the tube body 1 and the connecting seat 2 are connected and installed. This can drive the four lifting horizontal plates 43 to move down synchronously and squeeze the four first springs 45 and the telescopic airbags 46. In this way, the air in the telescopic airbags 46 can be introduced into the sealing ring airbags 42 through the corresponding connecting hoses 47. Furthermore, the sealing ring airbags 42 can be gradually inflated and expanded, so that after the tube body 1 is inserted and installed, the sealing ring airbags 42 can be fully squeezed and adhered to the first sealing groove 12.

[0028] The second sealing mechanism 5 also includes a lifting slide plate 51. The bottom of the inner cavity of the connecting seat 2 is provided with an array of mounting recesses 29, and the lifting slide plate 51 is slidably inserted into the mounting recesses 29. The second spring 52 is fixedly installed at the bottom end of the lifting slide plate 51, and the bottom end of the second spring 52 is fixedly connected to the bottom of the inner cavity of the mounting recesses 29. The top center of the lifting slide plate 51 is fixedly installed with a lifting vertical rod 53, and the top ends of the four lifting vertical rods 53 are fixedly connected with lifting sealing rings 54. The annular sealing ring 55 is fixedly installed at the top end of the lifting sealing ring 54, and an annular rubber ring 56 is fixedly connected between the lifting sealing ring 54 and the bottom of the inner cavity of the connecting seat 2.

[0029] By adopting the above technical solution, during use, while the tube body 1 and the connecting seat 2 are being installed, the annular sealing ring 55 can be inserted into the second sealing groove and the annular sealing ring 55 will be squeezed synchronously as the tube body 1 is inserted. This will push down the lifting sealing ring 54, thereby pushing down the lifting vertical rod 53, and then pushing down the lifting slide plate 51 and simultaneously squeezing the second spring 52. As a result, after the tube body 1 is inserted and installed, the annular sealing ring 55 can be fully squeezed and fitted into the second sealing groove.

[0030] Working principle: When in use, the tube body 1 is fully inserted into the corresponding connecting seat 2. Then, the drive ring 310 is rotated, which drives the drive gear ring 35 to rotate, which in turn drives the four driven gears 34 to rotate. This drives the four first bevel gears 36 to rotate through the locking shaft 31, which in turn drives the four second bevel gears 37 to rotate. This drives the four locking screws 32 to rotate, which in turn drives the four locking sliders 33 to move together in a centered manner. This drives the four locking rods 39, which are perpendicular to each other, to move together in a centered manner and insert into the locking groove 11. During this period, when the tube body 1 and the connecting seat 2 are connected and installed, the four driven pressure rods 44 can be pushed down simultaneously, thereby driving the four lifting horizontal plates 43 to move down simultaneously and squeeze the four first springs 45 and the telescopic airbags 46. This allows the air in the telescopic airbags 46 to be introduced into the sealing ring airbags 42 through the corresponding connecting hoses 47. This further allows the sealing ring airbags 42 to gradually inflate and expand, so that after the tube body 1 is inserted and installed, the sealing ring airbags 42 can fully squeeze and fit the first sealing groove 12. Furthermore, while the tube body 1 and the connecting seat 2 are being installed together, the annular sealing ring 55 can be inserted into the second sealing groove. As the tube body 1 is inserted, the annular sealing ring 55 will be squeezed synchronously, thereby pushing down the lifting sealing ring 54, which in turn pushes down the lifting vertical rod 53, which in turn pushes down the lifting slide plate 51 and simultaneously squeezes the second spring 52. Thus, after the tube body 1 is inserted and installed, the annular sealing ring 55 can be fully squeezed and fitted into the second sealing groove.

[0031] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A waterproof device for a photomultiplier tube, comprising a tube body (1) and a connecting seat (2), characterized in that: The tube body (1) can be slidably inserted into the connecting seat (2), and the tube body (1) is provided with a locking groove (11), a first sealing groove (12) and a second sealing groove for use. The upper end of the connecting seat (2) is provided with a locking mechanism (3) for use with the tube body (1), and the locking mechanism (3) includes a locking screw (32), a locking slider (33), a driven gear (34) and a locking insert (39). The lower end of the inner cavity of the connecting seat (2) is provided with a first sealing mechanism (4) for use with the tube body (1), and the first sealing mechanism (4) includes a sealing ring airbag (42), a lifting cross plate (43), a driven pressure rod (44) and a telescopic airbag (46). The bottom of the inner cavity of the connecting seat (2) is provided with a second sealing mechanism (5) for use with the tube body (1) and the first sealing mechanism (4), and the second sealing mechanism (5) includes a second spring (52) and a ring sealing ring (55). The locking mechanism (3) enables the four driven gears (34) to rotate synchronously, thereby driving the four locking screws (32) to rotate synchronously, which in turn drives the four locking sliders (33) to move synchronously in a centered manner. This allows the four locking rods (39) that are perpendicular to each other to move synchronously in a centered manner and be inserted into the locking groove (11). The first sealing mechanism (4) enables the four driven pressure rods (44) to be pushed down synchronously when the tube body (1) is installed with the connecting seat (2). This allows the four lifting horizontal plates (43) to move down synchronously and squeeze synchronously. Four telescopic airbags (46) enable the sealing ring airbag (42) to gradually inflate and expand, so that the sealing ring airbag (42) can fully squeeze and fit the first sealing groove (12) after the tube body (1) is inserted and installed. The setting and use of the second sealing mechanism (5) enables the ring sealing ring (55) to be inserted into the second sealing groove when the tube body (1) is connected to the connecting seat (2). As the tube body (1) is inserted, the ring sealing ring (55) and the second spring (52) will be squeezed synchronously, so that the ring sealing ring (55) can fully squeeze and fit into the second sealing groove after the tube body (1) is inserted and installed.

2. The waterproof device for a photomultiplier tube as described in claim 1, characterized in that, The locking mechanism (3) further includes a locking shaft (31). The upper end of the connecting seat (2) has a mounting cavity (21), a first inner groove (22), and a second inner groove (23) for cooperation. The mounting cavity (21), the first inner groove (22), and the second inner groove (23) are arranged in an array. The locking shaft (31) is rotatably inserted between the mounting cavity (21) and the first inner groove (22). The driven gear (34) is fixedly installed at the top of the locking shaft (31). The driven gear (34) is rotatably installed in the mounting cavity (21). A drive gear ring (35) is rotatably mounted inside the lock shaft (31), which meshes with the driven gear (34). A first bevel gear (36) is fixedly mounted at one end of the lock shaft (31) away from the driven gear (34). The lock screw (32) is rotatably inserted between the first inner groove (22) and the second inner groove (23). A second bevel gear (37) is fixedly mounted at one end of the lock screw (32). The second bevel gear (37) and the first bevel gear (36) are both rotatably mounted in the first inner groove (22), and the second bevel gear (37) meshes with the first bevel gear (36). The locking slider (33) is slidably inserted into the second inner groove (23), and a locking screw hole (38) is provided on one side of the locking slider (33). The locking screw (32) is threaded into the locking screw hole (38), and the locking rod (39) is fixedly installed on the side of the locking slider (33) away from the locking screw hole (38). The locking rod (39) can slide through the connecting seat (2) and slide into the locking groove (11).

3. A waterproof device for a photomultiplier tube as described in claim 2, characterized in that, A drive ring (310) is fixedly installed on the inner side of the drive gear ring (35). The upper end of the connecting seat (2) is provided with a rotating ring groove (24) that communicates with the mounting cavity (21), and the drive ring (310) is rotatably installed in the rotating ring groove (24).

4. A waterproof device for a photomultiplier tube as described in claim 3, characterized in that, The top of the connecting seat (2) is provided with an operating ring groove (25) that works with the drive ring (310), and the operating ring groove (25) is connected to the rotating ring groove (24).

5. A waterproof device for a photomultiplier tube as described in claim 1, characterized in that, The first sealing mechanism (4) further includes a vertical guide rod (41), which is fixedly inserted into the bottom end of the inner cavity of the connecting seat (2), and the vertical guide rods (41) are arranged in an array. The lifting horizontal plate (43) is slidably sleeved on the vertical guide rod (41), and the driven pressure rod (44) is fixedly installed on one side of the top end of the lifting horizontal plate (43). The bottom end of the tube body (1) can contact the driven pressure rod (44), and a first spring (45) is fixedly installed on the side of the lifting horizontal plate (43) away from the driven pressure rod (44). The bottom end of the first spring (45) is fixedly connected to the bottom of the inner cavity of the connecting seat (2), and The telescopic airbag (46) is fixedly installed on the side end of the lifting plate (43) near the first spring (45). The top of the telescopic airbag (46) is fixedly connected to the connecting hose (47), and the connecting hose (47) moves through the lifting plate (43). The side wall of the connecting seat (2) is provided with an annular groove (26), and the sealing annular airbag (42) is movably inserted into the annular groove (26). The connecting hose (47) moves through the connecting seat (2) and communicates with the sealing annular airbag (42). The side wall of the sealing annular airbag (42) near the connecting hose (47) is fixedly connected to the annular groove (26).

6. A waterproof device for a photomultiplier tube as described in claim 5, characterized in that, The bottom of the inner cavity of the connector (2) is provided with an array of mounting holes (27), and the vertical guide rod (41) is fixedly inserted into the adjacent mounting holes (27).

7. A waterproof device for a photomultiplier tube as described in claim 5, characterized in that, A vertical guide hole (48) is provided through the lifting horizontal plate (43), and the vertical guide rod (41) slides through the vertical guide hole (48).

8. A waterproof device for a photomultiplier tube as described in claim 5, characterized in that, One end of the lifting plate (43) is provided with a connecting hole (49), and the connecting hose (47) is movably passed through the connecting hole (49).

9. A waterproof device for a photomultiplier tube as described in claim 5, characterized in that, The lower end of the inner cavity of the connecting seat (2) is provided with a connecting through hole (28) that communicates with the annular groove (26), and the connecting hose (47) moves through the connecting through hole (28).

10. A waterproof device for a photomultiplier tube as described in claim 1, characterized in that, The second sealing mechanism (5) further includes a lifting slide (51). The bottom of the inner cavity of the connecting seat (2) is provided with an array of mounting recesses (29). The lifting slide (51) is slidably inserted into the mounting recesses (29). The second spring (52) is fixedly installed at the bottom end of the lifting slide (51). The bottom end of the second spring (52) is fixedly connected to the bottom of the inner cavity of the mounting recess (29). A lifting vertical rod (53) is fixedly installed at the top center of the lifting slide (51). The top ends of the four lifting vertical rods (53) are fixedly connected to lifting sealing rings (54). The annular sealing ring (55) is fixedly installed at the top end of the lifting sealing ring (54). An annular rubber ring (56) is fixedly connected between the lifting sealing ring (54) and the bottom of the inner cavity of the connecting seat (2).

Images