A special reducer for plug valve manufacturing

Abstract

The present invention relates to a special reducer for manufacturing plug valves, including a reducer body, the reducer body including a reducer housing, a driver, a first output shaft, the first output shaft is connected to the output end of the driver, the first output shaft is installed with a first gear, the reducer housing is also installed with a second output shaft and a third output shaft, the second output shaft is installed on the adjacent side of the first output shaft, the second output shaft has a second gear and a third gear, the fourth gear is meshed with the third gear, the third output shaft has an axial control end and a shaft end to be connected, the axial control end is installed with a shaft disk, the shaft disk is processed into an oblique end face, a shaft rod is installed in the reducer body, the end face of the rolling element is in contact with the oblique end face, the axial control end is installed with an elastic member, the elastic member is installed on the reducer housing, and the other end abuts against the axial control end. The special product designed by this scheme integrates rotation and axial movement, which greatly improves the grinding quality and efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of reducers, in particular to a reducer specially used for manufacturing plug valves. Background Art

[0002] The plug valve is a fast-opening straight-through valve with functions such as diversion, throttling and stop. It is widely used in pipelines of equipment such as oil fields, natural gas, chemicals, beer and beverages. It has extremely stringent processing requirements for the shape tolerance and roughness of the cylindrical or conical sealing surface. The traditional grinding of the sealing surface is completed by rotating equipment and manually controlling the axial movement. The efficiency is low and the labor cost is high. It takes about half an hour to grind a valve body. In the context of urgent market demand, our company came into being with this special product that integrates rotation and axial movement, which greatly improved the grinding quality and efficiency and realized the industrial upgrading of the degree of automation for the plug valve manufacturing industry. Summary of the invention

[0003] The invention provides a special reducer for manufacturing a plug valve, which solves the problems existing in the use process of the prior art.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A reducer specially used for manufacturing plug valves, comprising a reducer body, the reducer body comprising a reducer housing, a driver, and a first output shaft installed in the reducer housing, the first output shaft being connected to the output end of the driver, and a first gear being installed on the first output shaft, characterized in that: a second output shaft and a third output shaft are also installed in the reducer housing, the second output shaft is installed on the adjacent side of the first output shaft, the second output shaft has a second gear and a third gear meshing with the first gear, the second gear and the third gear are coaxially installed on the second output shaft, the third output shaft is installed with a fourth gear, and the fourth gear meshes with the above The third gear is meshed with the third gear of the reducer, the third output shaft has an axial control end installed in the reducer body and a shaft end to be connected extending out of the reducer body, the axial control end is installed with a shaft disk, one end face of the shaft disk is processed into an oblique end face of an oblique structure, a shaft rod for controlling the axial movement of the third output shaft is installed in the reducer body, a rolling element is installed on the shaft rod, the end face of the rolling element is in contact with the oblique end face, and a triangular gap is formed between the end face of the rolling element and the highest position of the oblique end face, the axial control end is installed with an elastic element, the elastic element is installed on the reducer housing, and the other end abuts against the axial control end.

[0006] Preferably, the first output shaft and the second output shaft are both installed in the reducer body through a first bearing assembly.

[0007] Preferably, the axial control end of the third output shaft is also equipped with a mounting disc seat, which is mounted on the shaft disc through a screw, and a shaft sleeve is mounted on the first output shaft. One end of the elastic member is mounted on the mounting disc seat, and the other end is mounted on the end face of the shaft sleeve.

[0008] Preferably, the third output shaft is installed in the reducer body through a second bearing assembly, and the second bearing assembly is composed of a linear bearing and a bearing.

[0009] Preferably, the elastic member is a spring.

[0010] Preferably, the rolling element is a bearing.

[0011] Preferably, the inclined end surface of the shaft disc is processed to 5-45°.

[0012] Preferably, an oil seal assembly is installed between the bearing on the third output shaft and the reducer body.

[0013] Preferably, the oil seal assembly adopts a skeleton oil seal.

[0014] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0015] 1: The reducer for plug valve can be designed and customized according to the rotation direction, speed and load capacity required by customers;

[0016] 2. While satisfying the rotational deceleration motion, the axial motion stroke and frequency per revolution can be designed according to the product application requirements;

[0017] 3. The output shaft is equipped with an elastic anti-collision device to ensure elastic compensation of the mechanism during axial feed and protect the equipment from damage;

[0018] 4. The input and output are coaxially designed, and have a base parallel to the output axis, which can be directly installed on the column slide;

[0019] 5. The special reducer for plug valve can be driven by diversified prime movers, such as electric motors, hydraulic motors, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 Schematic diagram of the appearance and structure of a reducer specially made for a plug valve Figure 1 .

[0022] Figure 2 Schematic diagram of the appearance and structure of a reducer specially made for a plug valve Figure 2 .

[0023] Figure 3 Schematic diagram of the internal structure of a reducer specially made for a plug valve Figure 1 .

[0024] Figure 4 Schematic diagram of the internal structure of a reducer specially made for a plug valve Figure 2 .

[0025] Figure 5 for Figure 4 Schematic diagram of the structure at A in the middle. DETAILED DESCRIPTION

[0026] The following will be combined with the attached embodiment of the present invention Figure 1-5 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0027] like Figures 1 to 5As shown, the present invention discloses a special reducer for manufacturing plug valves, the main purpose of which is to realize rotation and axial movement. The specific scheme is as follows: it includes a reducer body, the reducer body includes a reducer housing 1, a driver 2, and a first output shaft 3 installed in the reducer housing. The driver 2 is a motor, a hydraulic motor, etc., and the first output shaft is matched with a bearing 1-3 and a bearing 1-1. An oil seal 1-4 is installed at the end of the first output shaft, such as a skeleton oil seal. The first output shaft is connected to the output end of the driver, and the rotation of the first output shaft is driven by the rotation of the motor. The first output shaft is installed with a first gear 4. The installation position of the first gear 4 is between the bearing 1-3 and the bearing 1-1 in this scheme, which can further improve the stability. The reducer housing is also installed with a second output shaft 6 and a third output shaft 8. The second output shaft 6 is installed on the adjacent side of the first output shaft 3, and the second output shaft is installed in the reducer body through a bearing 6-2. The two schemes are arranged in parallel in the reducer housing to further improve the reliability of the transmission. The second output shaft 6 has a second gear 5 and a third gear meshing with the first gear. There are two ways for the third gear. Scheme 1 is composed of a tooth surface machined from the end face of the second output shaft 6, or scheme 2 is a sleeve mounted on the second output shaft 6. This scheme preferably adopts scheme 1, the purpose of which is to reduce space and improve the stability of the transmission. The second gear 5 and the third gear are coaxially mounted on the second output shaft. The third output shaft 8 is installed with a fourth gear 7, which meshes with the third gear. The third output The shaft has an axial control end installed in the reducer body and a shaft end 8-1 to be connected extending out of the reducer body. The axial control end is installed with a shaft disc 12, one end face of which is processed into an oblique end face 121 of an oblique structure. The reducer body is installed with a shaft rod 17 for controlling the axial movement of the third output shaft. The shaft rod 17 is installed with a rolling element 18. The end face of the rolling element 18 is in contact with the oblique end face. The contact position is basically at the lower surface B of the oblique end face. The end face of the rolling element 18 forms a triangular gap with the highest position of the oblique end face. The axial control end is installed with an elastic element 14. Preferably, the elastic element is a spring. The elastic element 14 is installed on the reducer housing, and the other end abuts against the axial control end. Preferably, the rolling element is a bearing.

[0028] The shaft rod 17 and the reducer housing are connected in the following manner: the reducer housing is provided with a mounting seat with a through opening, a shaft sleeve 20 is installed in the through opening, and a shaft rod with bearings 21 located on both sides of the shaft sleeve 20 is installed, and the through opening of the mounting seat is sealed and fixed by a valve cover 16.

[0029] The axial control end of the third output shaft is also equipped with a mounting disc seat, which is mounted on the shaft disc through a screw 22. A sleeve 15 is mounted on the first output shaft, and one end of the elastic member 14 is mounted on the mounting disc seat 13, and the other end is mounted on the end surface of the sleeve 15. The third output shaft is installed in the reducer body through a second bearing assembly, which is composed of a linear bearing 11 and a bearing 10. The bearing 10 can be a roller bearing, but is not limited to this. The elastic member 14, the mounting disc seat 13 and the sleeve 15 constitute the elastic anti-collision device. The third output shaft is provided with an elastic anti-collision device to ensure elastic compensation of the mechanism during axial feeding and protect the equipment from damage.

[0030] The inclined end face A of the shaft disc is processed into 5-45°. The set angle is determined according to the axial movement of the shaft end 8-1 to be connected of the third output shaft. When a larger axial movement is required, the larger the set angle is. The shaft end 8-1 to be connected is used as the driving force for grinding the sealing surface of the plug valve.

[0031] In order to improve the sealing performance, an oil seal assembly 9 is installed between the bearing 10 on the third output shaft 8 and the reducer body. The oil seal assembly adopts a skeleton oil seal.

[0032] The working principle of the present invention is that when the driver is started, the driver rotates to drive the rotation of the first output shaft. The first output shaft and the second output shaft are meshed to drive the second output shaft to rotate. The second output shaft and the third output shaft are meshed to drive the third output shaft to rotate, thereby realizing the rotation function. At the same time, when the third output shaft is rotating, due to the addition of a shaft disk 12, one end face of the shaft disk 12 is processed into an oblique end face 121 of an oblique structure. In the rolling element of the matching shaft rod, the third output shaft can realize axial backward movement as the oblique end face 121 of the shaft disk 12 contacts the rolling element. At the same time, due to the addition of an elastic element 14, according to the characteristics of the spring, it can push the third shaft rod back to realize axial reciprocating motion. Through the reasonable design of this scheme, the axial and rotational operations of a single shaft, i.e., the third output shaft, are realized at the same time, and the work that can only be completed by multiple machines is realized, which is very distinctive.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reducer for manufacturing plug valves, comprising a reducer body, the reducer body comprising a reducer housing, a driver, and a first output shaft installed in the reducer housing, the first output shaft being connected to the output end of the driver, and a first gear being installed on the first output shaft, characterized in that: A second output shaft and a third output shaft are also installed in the reducer housing. The second output shaft is installed on the adjacent side of the first output shaft. The second output shaft has a second gear and a third gear meshing with the first gear. The second gear and the third gear are coaxially installed on the second output shaft. The third output shaft is installed with a fourth gear, which meshes with the above-mentioned third gear. The third output shaft has an axial control end installed in the reducer body and a shaft end to be connected extending out of the reducer body. The axial control end is installed with a shaft disk, one end face of which is processed into an oblique end face of an oblique structure. A shaft rod for controlling the axial movement of the third output shaft is installed in the reducer body, and a rolling element is installed on the shaft rod. The end face of the rolling element is in contact with the oblique end face, and a triangular gap is formed between the end face of the rolling element and the highest position of the oblique end face. An elastic element is installed at the axial control end, and the elastic element is installed on the reducer housing, and the other end abuts against the axial control end.

2. According to claim 1, a reducer specially used for manufacturing plug valves, characterized in that: The first output shaft and the second output shaft are both installed in the reducer body through a first bearing assembly.

3. A reducer specially designed for manufacturing plug valves according to claim 1 or 2, characterized in that: The axial control end of the third output shaft is also equipped with a mounting disc seat, which is mounted on the shaft disc through a screw. The first output shaft is equipped with a sleeve. One end of the elastic member is mounted on the mounting disc seat, and the other end is mounted on the end face of the sleeve.

4. According to claim 1, a reducer specially used for manufacturing plug valves, characterized in that: The third output shaft is installed in the reducer body through a second bearing assembly, and the second bearing assembly is composed of a linear bearing and a bearing.

5. A reducer specially designed for manufacturing plug valves according to claim 1 or 4, characterized in that: The elastic member is a spring.

6. A reducer specially used for manufacturing plug valves according to claim 4, characterized in that: The rolling element is a bearing.

7. According to claim 1, a reducer specially used for manufacturing plug valves, characterized in that: The inclined end face of the shaft disc is processed to 5-45°.

8. According to claim 4, a reducer specially used for manufacturing plug valves, characterized in that: An oil seal assembly is installed between the bearing on the third output shaft and the reducer body.

9. A reducer specially used for manufacturing plug valves according to claim 8, characterized in that: The oil seal assembly adopts skeleton oil seal.

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