A sealing structure of a carburetor

Abstract

The utility model discloses a sealing structure of carburetor, including cylinder part, the top of cylinder part is provided with top cap spare, the outside of top cap spare and cylinder part is fixed with upper outer ring plate and lower outer ring plate respectively. The utility model discloses through setting the cooperation between positioning groove, sealing washer and positioning block, can play the role of positioning in the process of upper outer ring plate and lower outer ring plate sticking together, then the meshing of screw thread gear ring is in the inside of screw thread groove, and upper outer ring plate and lower outer ring plate can be closely stuck together, and sealing washer is closely stuck together in the inner wall of positioning groove and the outside of positioning block, when rotating, can rotate the screw rod in the inside of L type groove, with the rotation of upper outer ring plate, and the screw rod can be stuck together in the inner wall of L type groove, and the nut can be meshed in the outside of screw rod, in the above cooperation process, can carry out the sealing connection between cylinder part and top cap spare doubly, the structure is simple to operate and is convenient for personnel to operate, and compares the existing and has improved the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of carburetor technology, specifically to a sealing structure for a carburetor. Background Technology

[0002] A carburetor is a mechanical device that mixes gasoline and air in a certain proportion under the vacuum generated by the engine. As a precision mechanical device, the carburetor uses the kinetic energy of the intake airflow to atomize gasoline, making it one of the more important components of the engine. The connection of the carburetor pump cover is also quite important.

[0003] According to CN219176464U, a carburetor cover with a sealing structure includes a housing and a cover. The inner wall of the cover is provided with a fixing device, which includes: a fixing block, a positioning block, a device groove, a support spring, an arc-shaped block, an arc-shaped groove, a compression spring, a moving rod, a limiting plate, a slot, a limiting spring, a sliding plate, a limiting groove, a connecting block, and a snap-fit ​​block. A sliding opening adapted to the connecting block is provided inside the positioning block. When it is necessary to seal and fix the housing and cover, the arc-shaped block can be pressed inward to enter the device groove, and then the cover can be moved towards the housing. The arc-shaped block on the side of the cover moves into the device groove by squeezing the sliding opening. When the arc-shaped block reaches the position of the arc-shaped groove, it is no longer limited. Under the elastic force of the support spring, the arc-shaped block resets and engages with the positioning block, thereby connecting the box and the cover for easy use. However, this structure is rather cumbersome in actual operation, as it only increases the operator's workload for the sake of sealing. Moreover, existing sealing structures often use bolts and sealing rings for sealing, which generally results in poor sealing performance. Therefore, we propose a sealing structure for a carburetor to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a sealing structure for a carburetor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a carburetor, comprising a cylindrical body, a top cover being provided at the top of the cylindrical body, an upper outer ring plate and a lower outer ring plate being fixedly provided on the outer sides of the top cover and the cylindrical body, respectively, a positioning groove being provided on the outer side of the upper outer ring plate, a sealing ring being tightly fitted in the positioning groove, the sealing ring being placed on the outer side of a positioning block, the positioning block being fixedly provided on the lower outer ring plate, a threaded groove being provided on the lower outer ring plate, a threaded gear ring being meshed in the threaded groove, the threaded gear ring being fixedly provided on the upper outer ring plate, an outer opening being provided on the outer side of the lower outer ring plate, a rotating shaft being rotatably connected in the outer opening, a threaded rod being fixedly installed on the outer side of the rotating shaft, the threaded rod being vertically inserted into an L-shaped groove, the L-shaped groove being opened on the outer side of the upper outer ring plate, and a nut being meshed on the outer side of the threaded rod.

[0006] As a further preferred embodiment of this technical solution, both the sealing ring and the positioning block are triangular in shape, with the sealing ring tightly attached to the inner wall of the positioning groove and the outer side of the positioning block, respectively.

[0007] As a further preferred embodiment of this technical solution, the inner wall of the positioning groove, the inner and outer corners of the sealing ring, and the top corner of the positioning block are all set to an arc shape.

[0008] As a further preferred embodiment of this technical solution, the outer side of the threaded rod is attached to the inner wall of the L-shaped groove, and the threaded rod can slide inside the L-shaped groove.

[0009] As a further preferred embodiment of this technical solution, the threads that mesh between the threaded rod and the nut, and between the threaded groove and the threaded gear ring, are fine-pitch threads.

[0010] As a further preferred embodiment of this technical solution, a hexagonal sleeve is fixedly provided on the outer side of the top cover, and the outer edge of the hexagonal sleeve is set in an inclined shape.

[0011] This utility model provides a sealing structure for a carburetor, which has the following beneficial effects: This invention, through the cooperation of a positioning groove, a sealing ring, and a positioning block, can position the upper and lower outer ring plates during their fitting process. Subsequently, the threaded toothed ring engages inside the threaded groove, allowing the upper and lower outer ring plates to fit tightly together, and the sealing ring to fit tightly against the inner wall of the positioning groove and the outer side of the positioning block. During this process, when the upper outer ring plate rotates, the threaded rod can rotate into the L-shaped groove. As the upper outer ring plate rotates, the threaded rod can fit against the inner wall of the L-shaped groove, allowing the nut to engage with the outer side of the threaded rod. In this process, a dual sealing connection can be achieved between the cylinder and the top cover. This structure is simple to operate and easy for personnel to use, and it improves the sealing effect compared to existing technologies. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the structure of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram of A in the middle; Figure 4 This is a schematic diagram of the structure of the present invention with the upper outer ring plate and the lower outer ring plate separated.

[0013] In the diagram: 1. Cylinder body; 2. Top cover; 3. Upper outer ring plate; 4. Lower outer ring plate; 5. Positioning groove; 6. Sealing ring; 7. Positioning block; 8. Threaded groove; 9. Threaded toothed ring; 10. External opening; 11. Rotating shaft; 12. Threaded rod; 13. L-shaped groove; 14. Nut; 15. Hexagonal sleeve. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] This utility model provides a technical solution: such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in this embodiment, a sealing structure for a carburetor includes a cylindrical body 1. A top cover 2 is provided on the top of the cylindrical body 1. An upper outer ring plate 3 and a lower outer ring plate 4 are fixedly provided on the outer sides of the top cover 2 and the cylindrical body 1, respectively. A positioning groove 5 is provided on the outer side of the upper outer ring plate 3. A sealing ring 6 is tightly disposed in the positioning groove 5. The sealing ring 6 is placed on the outer side of a positioning block 7. The positioning block 7 is fixedly disposed on the lower outer ring plate 4. A threaded groove 8 is provided on the lower outer ring plate 4. A threaded gear ring 9 is engaged in the threaded groove 8. The threaded gear ring 9 is fixedly disposed on the upper outer ring plate 3. An outer opening 10 is provided on the outer side of the lower outer ring plate 4. A rotating shaft 11 is rotatably connected in the outer opening 10. A threaded rod 12 is fixedly installed on the outer side of the rotating shaft 11. The threaded rod 12 is vertically inserted into an L-shaped groove 13. The L-shaped groove 13 is... Located on the outer side of the upper outer ring plate 3, the threaded rod 12 is engaged with a nut 14. Through the cooperation of the positioning groove 5, the sealing ring 6, and the positioning block 7, it can play a positioning role during the fitting process of the upper outer ring plate 3 and the lower outer ring plate 4. Subsequently, the threaded toothed ring 9 is engaged inside the threaded groove 8, so that the upper outer ring plate 3 and the lower outer ring plate 4 can fit tightly together, and the sealing ring 6 fits tightly against the inner wall of the positioning groove 5 and the outer side of the positioning block 7. During this process, when the upper outer ring plate 3 rotates, the threaded rod 12 can be rotated into the L-shaped groove 13. As the upper outer ring plate 3 rotates, the threaded rod 12 can fit against the inner wall of the L-shaped groove 13, and the nut 14 can be engaged with the outer side of the threaded rod 12. In the above cooperation process, a double sealing connection can be achieved between the cylinder part 1 and the top cover part 2. This structure is simple to operate and easy for personnel to operate, and the sealing effect is improved compared with the existing ones.

[0016] like Figure 2 As shown, the sealing ring 6 and the positioning block 7 are both triangular in shape. The sealing ring 6 is tightly attached to the inner wall of the positioning groove 5 and the outer side of the positioning block 7, respectively. By setting the positioning groove 5, the sealing ring 6 and the positioning block 7 into a triangular shape, they can play a positioning role when the upper outer ring plate 3 and the lower outer ring plate 4 are attached.

[0017] like Figure 2 As shown, the inner wall of the positioning groove 5, the inner and outer corners of the sealing ring 6, and the top corner of the positioning block 7 are all set in an arc shape, which can provide a certain degree of protection for the sealing ring 6.

[0018] like Figure 3 and Figure 4 As shown, the outer side of the threaded rod 12 is attached to the inner wall of the L-shaped groove 13, and the threaded rod 12 can slide inside the L-shaped groove 13. When the nut 14 is engaged with the outer side of the threaded rod 12, the L-shaped groove 13 can restrict the orientation of the threaded rod 12 on one side.

[0019] like Figure 3 and Figure 4 As shown, the threads that mesh between the threaded rod 12 and the nut 14, the threaded groove 8 and the threaded gear ring 9 are fine-pitch threads. The use of fine-pitch threads can provide self-locking properties, thereby improving the stability of the connection.

[0020] like Figure 1 As shown, a hexagonal sleeve 15 is fixedly provided on the outer side of the top cover 2. The outer edge of the hexagonal sleeve 15 is set in an inclined shape. The hexagonal sleeve 15 facilitates the rotation of the top cover 2 by personnel.

[0021] This utility model provides a sealing structure for a carburetor, the specific working principle of which is as follows: In use, the sealing ring 6 is placed on the outside of the positioning block 7. Then, the top cover 2 is placed on the top of the cylindrical part 1, so that the positioning groove 5 can be fitted onto the outside of the sealing ring 6. During this time, the threaded toothed ring 9 is inserted into the inside of the threaded groove 8. Then, the operator can move the outside of the threaded rod 12, so that the rotating shaft 11 rotates inside the outer opening 10, and the threaded rod 12 can rotate inside the L-shaped groove 13. The operator can put the sleeve on the outside of the hexagonal sleeve 15 and rotate the top cover 2, so that the threaded toothed ring 9 can be engaged and rotated inside the threaded groove 8. During this time, the L-shaped groove 13 rotates outside the threaded rod 12. When the threaded toothed ring 9 is fully engaged inside the threaded groove 8, the sealing ring 6 is tightly attached to the inner wall of the positioning groove 5 and the outside of the positioning block 7. Then, the operator rotates the nut 14 outside the threaded rod 12, so that the nut 14 can be tightly attached to the outside of the upper outer ring plate 3. With this double cooperation, the upper outer ring plate 3 and the lower outer ring plate 4 can be effectively fastened.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a carburetor, characterized in that: The system includes a cylindrical body (1), a top cover (2) on the top of the cylindrical body (1), an upper outer ring plate (3) and a lower outer ring plate (4) fixedly disposed on the outer sides of the top cover (2) and the cylindrical body (1), respectively. A positioning groove (5) is provided on the outer side of the upper outer ring plate (3), and a sealing ring (6) is tightly disposed in the positioning groove (5). The sealing ring (6) is placed on the outer side of a positioning block (7). The positioning block (7) is fixedly disposed on the lower outer ring plate (4), and a threaded groove (8) is provided on the lower outer ring plate (4). A threaded gear ring (9) is engaged in the groove (8). The threaded gear ring (9) is fixedly mounted on the upper outer ring plate (3). An outer opening (10) is provided on the outer side of the lower outer ring plate (4). A rotating shaft (11) is rotatably connected in the outer opening (10). A threaded rod (12) is fixedly installed on the outer side of the rotating shaft (11). The threaded rod (12) is vertically inserted into the L-shaped groove (13). The L-shaped groove (13) is opened on the outer side of the upper outer ring plate (3). A nut (14) is engaged in the outer side of the threaded rod (12).

2. The sealing structure of a carburetor according to claim 1, characterized in that: The sealing ring (6) and the positioning block (7) are both triangular in shape. The sealing ring (6) is tightly attached to the inner wall of the positioning groove (5) and the outer side of the positioning block (7), respectively.

3. The sealing structure of a carburetor according to claim 1, characterized in that: The inner wall of the positioning groove (5), the inner and outer corners of the sealing ring (6), and the top corner of the positioning block (7) are all set to an arc shape.

4. The sealing structure of a carburetor according to claim 1, characterized in that: The threaded rod (12) is attached to the inner wall of the L-shaped groove (13) on the outside, and the threaded rod (12) can slide inside the L-shaped groove (13).

5. The sealing structure of a carburetor according to claim 1, characterized in that: The threads that mesh between the threaded rod (12) and the nut (14), the threaded groove (8) and the threaded gear ring (9) are fine-tooth threads.

6. The sealing structure of a carburetor according to claim 1, characterized in that: A hexagonal sleeve (15) is fixedly provided on the outer side of the top cover (2), and the outer edge of the hexagonal sleeve (15) is set in an inclined shape.

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