CN113327835B

CN113327835B - Waterproof device for photomultiplier

Info

Publication number: CN113327835B
Application number: CN202011047334.6A
Authority: CN
Inventors: 彭凤军
Original assignee: Hunan Boda Photoelectric Technology Co ltd
Current assignee: Hunan Boda Photoelectric Technology Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2022-05-13
Anticipated expiration: 2040-09-29
Also published as: CN113327835A

Abstract

The invention discloses a waterproof device for a photomultiplier, which comprises a tube body, a connecting seat arranged at the bottom end of the tube body and an electric wire connected to the right end of the connecting seat, wherein the bottom of the tube body is fixedly connected with electric posts distributed in an annular array. According to the invention, firstly, a dynamic comprehensive sealing structure is adopted, after the pipe body is arranged on the connecting seat, the connection gap between the pipe body and the connecting seat is subjected to compound dynamic sealing treatment, so that the waterproof and sealing effects of the installation of the photomultiplier are improved, and the waterproof requirement of the photomultiplier in the daily use process can be met.

Description

Waterproof device for photomultiplier

Technical Field

The invention relates to the technical field of photomultiplier tube waterproof assemblies, in particular to a waterproof device for a photomultiplier tube.

Background

Photomultiplier tubes are vacuum electronic devices that convert weak optical signals into electrical signals. Photomultiplier tubes are used in optical measuring instruments and spectroscopic analyzers. The method can measure the infinitesimal radiation power with the wavelength of 200-1200 nm in the aspects of low-level photometry and spectroscopy. The application range of the photomultiplier is expanded due to the appearance of the scintillation counter. The development of laser detection instruments is closely related to the use of photomultiplier tubes as efficient receivers. The emission and image transmission of telecine also cannot be separated from the photomultiplier tube. Photomultiplier tubes are widely used in the fields of metallurgy, electronics, machinery, chemical engineering, geology, medical treatment, nuclear industry, astronomy and cosmos-space research, etc. However, the existing waterproof device of the photomultiplier still has the defects that: the plug-in type mounting structure is mostly adopted, when the photomultiplier is inserted into the connecting seat and is subjected to the action of external force, the photomultiplier easily produces the phenomenon of skew and rocking on the connecting seat, the stability of installation is poor, simultaneously because chooseing for use of plug-in mode, easily produces the joint gap between photomultiplier and the connecting seat, the leakproofness of installation is poor, is difficult to satisfy the waterproof requirement in the daily use of photomultiplier.

Disclosure of Invention

The invention aims to: in order to solve the problems, a waterproof device for a photomultiplier is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a waterproof device for a photomultiplier comprises a tube body, a connecting seat and a power connection wire, wherein the connecting seat is arranged at the bottom end of the tube body, the power connection wire is connected to the right end of the connecting seat, the bottom of the tube body is fixedly connected with power connection posts distributed in an annular array, a plurality of groups of power connection rings matched with the power connection posts are fixedly connected to the inner side of the top of the connecting seat, a rotary groove is formed in the inner side of the connecting seat, which is positioned on the outer side of the tube body, a first sealing ring is embedded in the top of the inner side of the rotary groove, a first sealing groove used for accommodating the first sealing ring is formed in the outer portion of the tube body, a plurality of groups of L-shaped rotary frames distributed in the annular array are rotatably connected to the inner side of the rotary groove through a torsion spring rotating shaft, the inner sides of the vertical ends of the plurality of L-shaped rotary frames are mutually attached to the outer wall of the first sealing ring, a lifting groove is formed in the inner portion of the connecting seat, a folding elastic sheet is embedded in the lifting groove, the inboard top sliding connection that is located folding shell fragment that goes up and down the groove has the second sealing washer, the second seal groove that is used for holding the second sealing washer is seted up to the bottom of body.

As a further description of the above technical solution:

the middle part of the lower end face of the pipe body is fixedly connected with an inner solenoid.

As a further description of the above technical solution:

a servo motor is installed on the inner side of the bottom of the connecting seat, and an outer screw rod matched with the inner screw pipe is connected to the top end of the servo motor in a transmission mode.

As a further description of the above technical solution:

the equal sliding connection in top both sides of connecting seat has the locking piece that is the horizontal distribution, the outer end fixedly connected with of locking piece runs through the pull pole of connecting seat, the pull pole outside is located the cover and is equipped with extrusion spring between connecting seat and the locking piece.

As a further description of the above technical solution:

and a locking groove matched with the locking block is formed in the outer part of the pipe body.

As a further description of the above technical solution:

the bottom fixedly connected with collar of connecting seat, the inside of collar is seted up the multiunit and is the mounting hole that the annular array distributes.

As a further description of the above technical solution:

the inner side of the front end of the connecting seat is provided with a press switch, and the output end of the press switch is electrically connected with the input end of the servo motor.

As a further description of the above technical solution:

the front end of the connecting seat is fixedly connected with a waterproof transparent film for covering the press switch.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. in the invention, a dynamic comprehensive sealing structure is adopted, L-shaped rotating frames, a torsion spring rotating shaft and a first sealing ring are arranged in a rotating groove, under the action of the torsion force of the torsion spring rotating shaft, a plurality of groups of L-shaped rotating frames can synchronously expand outwards to an inclined state, at the moment, the first sealing ring can be in a loose state, when a pipe body is inserted into a connecting seat, the plurality of groups of L-shaped rotating frames can synchronously rotate inwards, when the plurality of groups of L-shaped rotating frames are all rotated to a vertical state, the first sealing ring can inwards extrude and attach the pipe body under the action of the extrusion force of the L-shaped rotating frames, a lifting groove, a second sealing ring and a folding elastic sheet are arranged below the pipe body on the connecting seat, when the pipe body is arranged into the connecting seat, the second sealing ring and the folding elastic sheet can synchronously move downwards, and under the action of the elasticity of the folding elastic sheet, the second sealing ring can elastically attach the pipe body, the structure can carry out compound dynamic sealing treatment on the connecting gap between the tube body and the connecting seat after the tube body is installed on the connecting seat, thereby improving the waterproof and sealing effects of the installation of the photomultiplier, and meeting the waterproof requirement in the daily use process of the photomultiplier.

2. According to the invention, an electric lifting type mounting structure is adopted, the inner screw tube is arranged on the tube body, the servo motor and the outer screw rod are arranged on the connecting seat, after the tube body is inserted into the connecting seat, the servo motor can be controlled to work through the press switch, the outer screw rod can be driven to rotate when the servo motor works, the tube body can continuously move towards the inside of the connecting seat under the transmission action between the outer screw rod and the inner screw tube until the tube body is tightly attached to the connecting seat, the mounting treatment between the photomultiplier and the connecting seat is facilitated by the structure, and the photomultiplier and the connecting seat can be mechanically locked after mounting, so that the convenience of mounting and dismounting treatment of the photomultiplier is improved, and the mounting stability of the photomultiplier is also improved.

3. According to the invention, the lock catch type safety structure is arranged, the lock block, the pull rod and the extrusion spring are arranged on two sides of the top of the connecting seat, the lock groove is formed in the tube body, when the tube body is completely inserted into the connecting seat, the lock block can move towards the tube body under the action of the elastic force of the extrusion spring, and when the lock block slides into the lock groove in the tube body, further locking treatment between the tube body and the connecting seat after installation is completed, and the structure reduces the phenomena of accidental separation and loosening of the tube body from the mounting seat in the actual use process, so that the installation stability of the photomultiplier is improved.

Drawings

FIG. 1 is a schematic view of a waterproof device for a photomultiplier according to the present invention;

FIG. 2 is a schematic cross-sectional view of the connection between the tube and the connecting base of the present invention;

FIG. 3 is a schematic cross-sectional view A-A of the present invention;

FIG. 4 is a partial enlarged view of the present invention at B;

fig. 5 is a schematic view of a partial connection structure of the tube body and the connecting base according to the present invention.

Illustration of the drawings:

1. a pipe body; 101. connecting a power post; 102. an inner solenoid; 103. a first seal groove; 104. locking the groove; 105. a second seal groove; 2. a connecting seat; 201. a mounting ring; 202. mounting holes; 203. rotating the groove; 204. a power connection ring; 205. a lifting groove; 206. a waterproof transparent film; 3. connecting a wire; 4. a locking block; 401. a pull rod; 5. a push switch; 6. a first seal ring; 7. an L-shaped rotating frame; 8. a servo motor; 801. an outer screw rod; 9. a compression spring; 10. a second seal ring; 11. folding the elastic sheet; 12. a torsion spring rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a waterproof device for a photomultiplier comprises a tube body 1, a connecting seat 2 and a power connection wire 3 connected to the right end of the connecting seat 2 are arranged at the bottom end of the tube body 1, power connection posts 101 distributed in an annular array are fixedly connected to the bottom of the tube body 1, a plurality of groups of power connection rings 204 matched with the power connection posts 101 are fixedly connected to the inner side of the top of the connecting seat 2, rotary grooves 203 are formed in the inner portion of the connecting seat 2 and located on the outer side of the tube body 1, first sealing rings 6 are embedded in the top portions of the inner sides of the rotary grooves 203, first sealing grooves 103 used for containing the first sealing rings 6 are formed in the outer portion of the tube body 1, a plurality of groups of L-shaped rotating frames 7 distributed in an annular array are rotatably connected to the inner side of the rotary grooves 203 through torsion spring rotating shafts 12, the inner sides of the vertical ends of the groups of the L-shaped rotating frames 7 are mutually attached to the outer surface wall of the first sealing rings 6, lifting grooves 205 are formed in the inner portion of the connecting seat 2 and located below the tube body 1, the folding elastic sheet 11 is embedded in the inner side of the lifting groove 205, the second sealing ring 10 is slidably connected to the upper side of the inner side of the lifting groove 205, which is located above the folding elastic sheet 11, and the second sealing groove 105 for accommodating the second sealing ring 10 is formed in the bottom end of the pipe body 1.

Specifically, as shown in fig. 1 and 2, an inner screw tube 102 is fixedly connected to the middle of the lower end surface of the pipe body 1, a servo motor 8 is installed on the inner side of the bottom of the connecting seat 2, an outer screw rod 801 matched with the inner screw tube 102 is connected to the top end of the servo motor 8 in a transmission manner, and the inner screw tube 102 and the outer screw rod 801 are arranged to facilitate screwing installation processing between the pipe body 1 and the connecting seat 2.

Specifically, as shown in fig. 1, fig. 2 and fig. 5, the equal sliding connection in top both sides of connecting seat 2 has the locking piece 4 that is horizontal distribution, the outer end fixedly connected with of locking piece 4 runs through the pull pole 401 of connecting seat 2, the cover is equipped with extrusion spring 9 between pull pole 401 outside being located connecting seat 2 and the locking piece 4, the outside of body 1 seted up with locking piece 4 assorted locked groove 104, the setting of locking piece 4 and locked groove 104, be convenient for the further locking after connecting seat 2 and the installation of body 1 is handled, the setting of pull pole 401, be convenient for operating personnel to locking piece 4 sliding adjustment operation processing, extrusion spring 9's setting, be convenient for the elasticity closure between locking piece 4 and the locked groove 104 is handled.

Specifically, as shown in fig. 1 and 2, the bottom fixedly connected with collar 201 of connecting seat 2, the mounting hole 202 that the multiunit is the ring array and distributes is seted up to the inside of collar 201, press switch 5 is installed to the front end inboard of connecting seat 2, press switch 5's output and servo motor 8's input electric connection, the front end fixedly connected with of connecting seat 2 cladding press switch 5's waterproof transparent film 206, the setting of collar 201 and mounting hole 202, be convenient for connecting seat 2 passes through the installation and the fixed processing of fastener, press switch 5's setting, be convenient for servo motor 8's circular telegram and control processing, the setting of waterproof transparent film 206, can carry out waterproof sealing with press switch 5 and handle.

The working principle is as follows: when in use, the connecting seat 2 can be arranged on a designated position through the mounting ring 201 and the fastening piece, the connecting wire 3 can be connected with equipment, under the torsional force of the torsional spring rotating shaft 12, a plurality of groups of L-shaped rotating frames 7 can be expanded outwards to an inclined state synchronously, when the pipe body 1 is required to be arranged on the connecting seat 2, the connecting post 101 at the bottom of the pipe body 1 can be aligned in advance and slide into the connecting ring 204 on the connecting seat 2, when the inner screw tube 102 on the pipe body 1 contacts the outer screw rod 801, the press switch 5 can be operated to control the servo motor 8 to work, the servo motor 8 can drive the outer screw rod 801 to rotate when working, under the transmission action between the outer screw rod 801 and the inner screw tube 102, the pipe body 1 can move towards the inside of the connecting seat 2 vertically and gradually, when the bottom end of the pipe body 1 contacts the horizontal ends of the plurality of groups of L-shaped rotating frames 7, the L-shaped rotating frames 7 in the inclined state can rotate to the vertical state gradually, when the L-shaped rotating frame 7 is rotated to a vertical state, the first sealing ring 6 is pressed to move towards the first sealing groove 103 on the pipe body 1, the first sealing ring 6 can perform a first sealing treatment on the gap between the pipe body 1 and the connecting seat 2, and when the pipe body 1 is completely attached to the connecting seat 2, the operation of the push switch 5 is stopped, the pipe body 1 can downwards press the second sealing ring 10 and the folding spring plate 11 in the lifting groove 205, and the folding spring plate 11 can generate a reverse extrusion force, so that the second sealing ring 10 is more tightly attached to the second sealing groove 105 on the pipe body 1, under the combined action of the first sealing ring 6 and the second sealing ring 10, a sealed cavity can be generated between the pipe body 1 and the connecting seat 2, thereby reducing the external rainwater and dust from entering the connecting seat 2, and after the pipe body 1 is completely inserted into the connecting seat 2, under the action of the extrusion spring 9, the locking piece 4 will move towards the tube 1, and when the locking piece 4 slides into the locking groove 104 on the tube 1, the installed tube 1 and the connecting base 2 will be further locked.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A waterproof device for a photomultiplier comprises a tube body (1), a connecting seat (2) and a power connection wire (3) connected to the right end of the connecting seat (2) are arranged at the bottom end of the tube body (1), and the waterproof device is characterized in that the bottom of the tube body (1) is fixedly connected with power connection posts (101) distributed in an annular array, a plurality of groups of power connection rings (204) matched with the power connection posts (101) are fixedly connected to the inner side of the top of the connecting seat (2), a spiral groove (203) is formed in the outer side of the tube body (1) inside the connecting seat (2), a first sealing ring (6) is embedded in the top of the inner side of the spiral groove (203), a first sealing groove (103) used for containing the first sealing ring (6) is formed in the outer portion of the tube body (1), a plurality of groups of L-shaped rotating frames (7) distributed in an annular array are rotatably connected to the inner side of the spiral groove (203) through a torsion spring rotating shaft (12), and the vertical end inboard of multiunit L type revolving rack (7) all laminates with the exterior wall of first sealing washer (6) each other, lift groove (205) have been seted up to the below that the inside of connecting seat (2) is located body (1), the inboard in lift groove (205) is inlayed and is equipped with folding shell fragment (11), the top sliding connection that the inboard in lift groove (205) is located folding shell fragment (11) has second sealing washer (10), second seal groove (105) that are used for holding second sealing washer (10) are seted up to the bottom of body (1).

2. The waterproof device for the photomultiplier according to claim 1, wherein an inner coil (102) is fixedly connected to the middle of the lower end surface of the tube body (1).

3. The waterproof device for the photomultiplier according to claim 2, wherein a servo motor (8) is installed inside the bottom of the connecting base (2), and an outer screw rod (801) matched with the inner screw tube (102) is in transmission connection with the top end of the servo motor (8).

4. The waterproof device for the photomultiplier according to claim 1, wherein the two sides of the top of the connecting seat (2) are slidably connected with horizontally distributed locking blocks (4), the outer ends of the locking blocks (4) are fixedly connected with a pull rod (401) penetrating through the connecting seat (2), and an extrusion spring (9) is sleeved outside the pull rod (401) and between the connecting seat (2) and the locking blocks (4).

5. The waterproof device for the photomultiplier according to claim 4, wherein the tube body (1) is externally provided with a locking groove (104) matching with the locking piece (4).

6. The waterproof device for the photomultiplier according to claim 3, wherein a mounting ring (201) is fixedly connected to the bottom end of the connecting base (2), and a plurality of sets of mounting holes (202) distributed in an annular array are formed in the mounting ring (201).

7. The waterproof device for the photomultiplier according to claim 6, wherein a push switch (5) is mounted inside the front end of the connecting base (2), and the output end of the push switch (5) is electrically connected with the input end of the servo motor (8).

8. The waterproof device for a photomultiplier according to claim 7, wherein a waterproof transparent film (206) covering the push switch (5) is fixedly attached to the front end of the junction holder (2).