Exhaust pipe for magnetron output device

Abstract

The utility model relates to the technical field of microwave equipment, in particular to an exhaust pipe for a magnetron output device, which comprises an exhaust pipe, a fixing device is movably connected inside the exhaust pipe, a sealing cover is arranged on the outer side of the fixing device, and a support column is fixedly connected between the exhaust pipe and the fixing device. By arranging the fixing device, the sealing covers with different inner diameters caused by production precision can be fixed to the exhaust pipe, the stud is rotated by screwing the screwing block, and the movable block can move back and forth in the sliding groove through forward rotation and reverse rotation of the stud, so that the sealing covers are fixed to the exhaust pipe, and the sealing covers are fixed to the exhaust pipe. A fixed column can move back and forth through movement of a movable block, so that the fixed column can move towards the inner side of the sealing cover, the fixed column can be tightly attached to the inner side of the sealing cover, and it is guaranteed that a plurality of fixed rings can be tightly clamped into clamping grooves to fix the sealing cover; and the sealing covers with different sealing cover inner diameters due to production precision can be conveniently fixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to microwave equipment technical field especially relates to the exhaust pipe for magnetron output device. BACKGROUND

[0002] The exhaust pipe is a part of the magnetron output device, and its main role is to guide the microwave energy from the inside of the magnetron to the outside. The exhaust pipe is usually composed of a straight pipe and a support body located at the lower part of the straight pipe. The lower end of the straight pipe is inserted into the support body and maintains a certain distance from the lower end of the support body. In this structure, a choke groove is formed between the straight pipe and the support body. This choke groove can prevent unwanted high-frequency wave components from flowing back into the power supply, thereby reducing electromagnetic interference.

[0003] The existing exhaust pipe of the magnetron output device needs to be protected by a cover after assembly. The cover is usually fixed by being inserted directly below the outside of the exhaust pipe. Since the exhaust pipe is generally fixed in structure, when the inner diameter of the cover is not uniform due to production precision, the cover with a larger inner diameter is easily shaken on the outside of the exhaust pipe after being inserted, and is not stable after being fixed. The cover with a smaller inner diameter cannot be easily inserted into the exhaust pipe, which is not conducive to adapting to the cover with a non-uniform inner diameter due to production precision. SUMMARY

[0004] Therefore, the utility model provides an exhaust pipe for a magnetron output device, which mainly solves the problem of the cover not being fixed well on the exhaust pipe due to non-uniform inner diameter caused by production precision.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an exhaust pipe for a magnetron output device, comprising an exhaust pipe, a fixing device movably connected inside the exhaust pipe, a cover placed outside the fixing device, a support column fixedly connected between the exhaust pipe and the fixing device, the fixing device comprising a threaded stud movably connected inside the straight pipe, a knob fixedly connected to the outer end of the threaded stud, a moving block threadedly connected to the outer side of the threaded stud, a fixed column fixedly connected to the top of the moving block, and a clamping groove provided on the outer side of the fixed column.

[0006] By adopting the above-mentioned technical scheme, the threaded stud is rotated by turning the knob, and the moving block can move back and forth in the sliding groove by forward and reverse rotation of the threaded stud. The fixed column can move back and forth by the movement of the moving block. The cover is inserted outside the fixed column, and the fixed column moves to the inside of the cover, so that the fixed column tightly fits the inside of the cover, and the cover is more firmly fixed on the cover. This is convenient for fixing the cover with non-uniform inner diameter caused by production precision.

[0007] As a further description of the above technical solution: the exhaust pipe comprises a straight pipe, a support body is fixedly connected to the lower side of the outer side of the straight pipe, a fixed groove is arranged on the upper side of the outer side of the support body, a sliding groove is arranged in the support body, and a choke groove is arranged between the lower side of the outer side of the straight pipe and the support body.

[0008] By adopting the above technical solution, the fixed groove is used for fixing the fixed cylinder, the sliding groove is used for moving the moving block, and the choke groove is used for preventing unwanted high-frequency wave components from flowing back to the inside of the magnetron power supply.

[0009] As a further description of the above technical solution: the support column comprises a fixed cylinder fixedly connected to the inside of the support body, a limiting block movably connected to the inside of the fixed cylinder, a spring fixedly connected between the fixed cylinder and the limiting block, a top column fixedly connected to the side of the limiting block away from the spring, a support sleeve fixedly connected to the outer side of the top column, and the top column is fixedly connected with the fixed column.

[0010] By adopting the above technical solution, when the fixed column moves, it can drive the top column and the limiting block to move in the inside of the fixed cylinder, and under the action of the spring, the top column can exert a certain pressure on the fixed column, so that the fixed column can exert a certain pressure on the inner wall of the cover, and the cover can be more firmly fixed on the fixed column.

[0011] As a further description of the above technical solution: the cover comprises a cover body placed on the outer side of the fixed column, and a fixed ring is fixedly connected to the inner side of the cover body.

[0012] By adopting the above technical solution, the contour of the fixed ring is matched with the clamping groove, so that the fixed ring can be clamped in the clamping groove, and the cover can be fixed on the fixed column.

[0013] As a further description of the above technical solution: the distance between the clamping grooves is the same as the distance between the fixed rings.

[0014] By adopting the above technical solution, it is ensured that each fixed ring can be clamped into the clamping groove, and the stability of the cover fixing is ensured.

[0015] As a further description of the above technical solution: the fixed ring is made of rubber material.

[0016] By adopting the above technical solution, the fixed ring can be deformed by extrusion, and the fixed ring can be clamped into the clamping groove.

[0017] By adopting the above technical solution, the exhaust pipe for the magnetron output device has at least the following beneficial effects:

[0018] Compared with the prior art, the exhaust pipe for the magnetron output device is fixed to the exhaust pipe by the fixing device, the cover with different inner diameters due to production precision is fixed to the exhaust pipe, the cover is placed outside the four fixing columns during use, the lower part of the cover is attached to the support body, the screw post is rotated by rotating the screw block, the moving block moves back and forth in the sliding groove by the forward rotation and reverse rotation of the screw post, the fixing column moves back and forth by the movement of the moving block, the fixing column moves to the inner side of the cover, the fixing column is closely attached to the inner side of the cover, the multiple fixing rings are closely clamped in the clamping groove, and the cover is more firmly fixed to the cover, so that the cover with different inner diameters due to production precision is fixed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A cross-sectional structure schematic view of the exhaust pipe for the magnetron output device is provided in the utility model.

[0020] Figure 2 A whole structure schematic view of the exhaust pipe for the magnetron output device is provided in the utility model.

[0021] Figure 3 An exhaust pipe cross-sectional structure schematic view of the exhaust pipe for the magnetron output device is provided in the utility model.

[0022] Figure 4 A fixing device whole structure schematic view of the exhaust pipe for the magnetron output device is provided in the utility model.

[0023] Figure 5 A support column cross-sectional structure schematic view of the exhaust pipe for the magnetron output device is provided in the utility model.

[0024] LEGEND:

[0025] 1, exhaust pipe; 101, straight pipe; 102, support body; 103, fixed groove; 104, sliding groove; 105, choke groove; 2, fixing device; 201, screw block; 202, moving block; 203, screw post; 204, clamping groove; 205, fixing column; 3, support column; 301, fixed cylinder; 302, limiting block; 303, spring; 304, jacking post; 305, support sleeve; 4, cover; 401, cover body; 402, fixing ring. DETAILED DESCRIPTION

[0026] REFERENCE Figures 1-5The utility model provides a exhaust pipe for magnetron output device, including exhaust pipe 1, the inside movable joint of exhaust pipe 1 has fixing device 2, the outside of fixing device 2 places cover 4, and the fixed connection of exhaust pipe 1 and fixing device 2 has support column 3, fixing device 2 includes the movable joint in the inside of straight pipe 101 stud 203, and stud 203 can rotate in the inside of straight pipe 101, and the fixed connection of the outer end of stud 203 has screw block 201, and the outside screw joint of stud 203 has moving block 202, and moving block 202 can move in the inside of sliding slot 104, and the top fixed connection of moving block 202 has fixed column 205, and the outside of fixed column 205 is equipped with the clamping slot 204, by screwing screw block 201 makes stud 203 rotate, and by the forward rotation and reverse rotation of stud 203, moving block 202 can move back and forth in sliding slot 104, by the movement of moving block 202 makes fixed column 205 can move back and forth, by inserting cover 4 in the outside of fixed column 205, and by making fixed column 205 move to the inside of cover 4, fixed column 205 can be closely attached to the inside of cover 4, and then make cover 4 can be more firmly fixed on cover 4, and it is convenient to the cover 4 of the cover 4 inner diameter caused by production accuracy is not fixed.

[0027] Further, the exhaust pipe 1 includes a straight pipe 101, a support body 102 is fixedly connected to the lower side of the outer side of the straight pipe 101, a fixed groove 103 is arranged on the upper side of the outer side of the support body 102, the fixed groove 103 is used for fixing the fixing cylinder 301, a sliding groove 104 is arranged in the inside of the support body 102, the sliding groove 104 is used for the movement of the moving block 202, a choke groove 105 is arranged between the lower side of the outer side of the straight pipe 101 and the support body 102, and the choke groove 105 is used for preventing unwanted high-frequency wave components from flowing back to the inside of the magnetron power supply.

[0028] Further, the support column 3 includes a fixing cylinder 301 fixedly connected to the inside of the support body 102, a limiting block 302 movably connected to the inside of the fixing cylinder 301, a spring 303 fixedly connected between the fixing cylinder 301 and the limiting block 302, a top column 304 fixedly connected to the side of the limiting block 302 away from the spring 303, the top column 304 and the limiting block 302 can move in the inside of the fixing cylinder 301, a support sleeve 305 fixedly connected to the outer side of the top column 304, the support sleeve 305 is used for strengthening the strength of the connection between the top column 304 and the fixed column 205, the top column 304 and the fixed column 205 are fixedly connected, when the fixed column 205 moves, it can drive the top column 304 and the limiting block 302 to move in the inside of the fixing cylinder 301, and under the action of the spring 303, the top column 304 can exert a certain pressure on the fixed column 205, thereby the fixed column 205 can exert a certain pressure on the inner wall of the cover 4, and the cover 4 can be more firmly fixed on the fixed column 205.

[0029] Further, the cover 4 comprises a cover body 401 placed outside the fixing column 205, the inner side of the cover body 401 is fixedly connected with a fixing ring 402, the contour of the fixing ring 402 is matched with the clamping groove 204, so that the fixing ring 402 can be clamped in the clamping groove 204, thereby enabling the cover 4 to be fixed on the fixing column 205.

[0030] Further, the interval between the clamping grooves 204 is the same as the interval between the fixing rings 402, which ensures that each fixing ring 402 can be clamped into the clamping groove 204, and ensures the stability of the cover 4.

[0031] Further, the fixing ring 402 is made of rubber material, and is deformed by extrusion, so as to facilitate the clamping of the fixing ring 402 into the clamping groove 204.

[0032] Working principle: when in use, the cover 4 is placed outside the four fixing columns 205, and the lower part of the cover 4 is attached to the support body 102, then the screw block 201 is twisted to rotate the screw column 203, and the screw column 203 is rotated forward and backward, so that the moving block 202 can move back and forth in the sliding groove 104, the movement of the moving block 202 enables the fixing column 205 to move back and forth, so that the fixing column 205 moves towards the inner side of the cover 4, thereby ensuring that the fixing column 205 can be closely attached to the inner side of the cover 4, and ensuring that the plurality of fixing rings 402 can be closely clamped into the clamping groove 204, thereby enabling the cover 4 to be more firmly fixed on the cover 4, and facilitating the fixation of the cover 4 with different inner diameters due to production precision.

[0033] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. Exhaust pipe for a magnetron output device, comprising an exhaust pipe (1), characterized in that: The inside of the exhaust pipe (1) is movably connected with a fixing device (2), the outside of the fixing device (2) is placed with a cover (4), the exhaust pipe (1) and the fixing device (2) are fixedly connected with a support column (3), the fixing device (2) comprises a stud (203) movably connected inside a straight pipe (101), the outer end of the stud (203) is fixedly connected with a twisting block (201), the outside of the stud (203) is threadedly connected with a moving block (202), the top of the moving block (202) is fixedly connected with a fixing column (205), the outside of the fixing column (205) is provided with a clamping groove (204).

2. The exhaust for a magnetron output device according to claim 1, characterized in that: The exhaust pipe (1) comprises a straight pipe (101), the lower side of the outside of the straight pipe (101) is fixedly connected with a support body (102), the upper side of the outside of the support body (102) is provided with a fixing groove (103), the inside of the support body (102) is provided with a sliding groove (104), the lower side between the outside of the straight pipe (101) and the support body (102) is provided with a choke groove (105).

3. The exhaust for a magnetron output device according to claim 1, characterized in that: The support column (3) comprises a fixing cylinder (301) fixedly connected inside the support body (102), the inside of the fixing cylinder (301) is movably connected with a limiting block (302), the fixing cylinder (301) and the limiting block (302) are fixedly connected with a spring (303), the side, away from the spring (303), of the limiting block (302) is fixedly connected with a top column (304), the outside of the top column (304) is fixedly connected with a support sleeve (305), the top column (304) is fixedly connected with the fixing column (205).

4. The exhaust for a magnetron output device according to claim 1, characterized in that: The cover (4) comprises a cover body (401) placed outside the fixing column (205), the inside of the cover body (401) is fixedly connected with a fixing ring (402).

5. The exhaust for a magnetron output device according to claim 4, wherein: The distance between the clamping grooves (204) is the same as the distance between the fixing rings (402).

6. The exhaust for a magnetron output device according to claim 4, wherein: The fixing ring (402) is made of rubber material.

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