Octagonal steel washer grinding equipment

Abstract

The invention relates to an octagonal steel washer grinding device, comprising a stand, a grinding mechanism and a driving mechanism for driving the grinding mechanism to rotate, wherein the driving mechanism is installed on the stand, and the grinding mechanism comprises two symmetrically arranged grinders, wherein the grinding surface of each grinder is provided with a grinding belt, and the grinding belt contacts with the sealing surface of the octagonal steel washer, and the grinding mechanism is driven to rotate by the driving mechanism, so that the grinding belt on the grinder rubs with the sealing surface of the octagonal steel washer, thereby realizing the polishing and grinding of the octagonal steel washer, therefore, the invention does not require manual polishing and grinding, thereby improving the efficiency of polishing and grinding, and reducing the labor cost and the labor intensity of the workers; the grinding belt performs circular motion along the sealing surface of the octagonal steel washer for polishing and grinding, thereby improving the grinding effect.

Description

Technical Field

[0001] The invention relates to the technical field of inspection and maintenance of petrochemical equipment, and in particular to an octagonal steel washer grinding device. Background Art

[0002] In the petrochemical industry, high-temperature, high-pressure hydrogenation devices such as hydrocracking, residue oil hydrogenation, and diesel hydrogenation operate under high-temperature, high-pressure, and hydrogenation conditions for a long time, and the operating conditions are extremely harsh. The four sealing surfaces of the octagonal steel gaskets of the high-pressure equipment and pipeline flange sealing components disassembled during device maintenance often have defects or damage to varying degrees. Due to the high price of octagonal steel gaskets, they generally need to be reused. The reused octagonal steel gaskets must be repaired through high-quality polishing and grinding to eliminate the defects or damage on the four sealing surfaces to ensure that there is no leakage when the device is started. Therefore, when the device is overhauled, it is generally necessary to mobilize a large number of skilled technical workers to perform manual polishing and grinding repairs on the octagonal steel gaskets to eliminate the defects or damage on the four sealing surfaces so that they can be reused. For example, during the maintenance of the residue oil hydrotreating unit, more than one hundred high-pressure static sealing octagonal steel washers need to be taken offline for grinding and repair. During this period, a large number of skilled technical workers need to be organized to carry out manual polishing, grinding and repair work. Manual polishing, grinding and repair require a large number of skilled technical workers, and the grinding quality often depends on the skilled operation of the technical workers. When the sealing surface defects of the octagonal steel washers are large, manual polishing, grinding and repair take a lot of time and the grinding effect is not ideal. Summary of the invention

[0003] The purpose of the present invention is to design an octagonal steel washer grinding device to solve the technical problems of low manual polishing and grinding efficiency, high labor cost, high labor intensity of workers and unsatisfactory grinding effect in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an octagonal steel washer grinding device, comprising a stand, a grinding mechanism and a driving mechanism for driving the grinding mechanism to rotate, wherein the driving mechanism is installed on the stand, and the grinding mechanism comprises two symmetrically arranged grinders, each of the grinding surfaces of the grinders is provided with a grinding belt, and the grinding belt is in contact with the sealing surface of the octagonal steel washer.

[0005] Furthermore, it also includes a positioning assembly, which includes a chuck, a telescopic long shaft and a first stopper, the chuck is installed in the middle of the stand, the first stopper is arranged on the telescopic long shaft, the telescopic long shaft is connected to the claws of the chuck, and the side wall of the chuck is provided with a handle for adjusting the opening and closing of the claws.

[0006] Furthermore, the chuck is a four-jaw chuck, and the telescopic long axis corresponds to the jaws one by one.

[0007] Furthermore, the driving mechanism includes a pneumatic motor and a transmission assembly, wherein the transmission assembly is connected to an output shaft of the pneumatic motor, and the transmission assembly is movably connected to the chuck.

[0008] Furthermore, the transmission assembly includes a first bevel gear, a second bevel gear and a transmission shaft, the transmission shaft is connected to a first rotating arm, the first bevel gear is mounted on the output shaft of the pneumatic motor, the second bevel gear is mounted on the transmission shaft, the first bevel gear is meshed with the second bevel gear, the transmission shaft is rotatably connected to the chuck via a bearing, and the first rotating arm is connected to the grinder via a first connecting arm.

[0009] Furthermore, the transmission shaft is connected to a second rotating arm, the length of the second rotating arm is smaller than the length of the first rotating arm, the second rotating arm is connected to a second connecting arm, and the second connecting arm is provided with two symmetrically arranged grinders.

[0010] Furthermore, the grinder includes a grinding bracket, a movable shaft and a grinding pressure plate. The movable shaft is loosely matched with the grinding bracket through a shaft sleeve. The grinding pressure plate is arranged at the end of the movable shaft. A spring is provided between the grinding pressure plate and the grinding bracket. Under the action of the spring, the grinding pressure plate presses the sealing surface of the octagonal steel gasket.

[0011] Compared with the prior art, the present invention has the following beneficial effects: the present invention drives the grinding mechanism to rotate through the driving mechanism, so that the grinding belt on the grinder rubs against the sealing surface of the octagonal steel gasket, thereby realizing the polishing and grinding of the octagonal steel gasket. Therefore, the present invention does not require manual polishing and grinding, thereby improving the efficiency of polishing and grinding, and reducing labor costs and labor intensity of workers; the grinding belt circulates in a circular motion along the sealing surface of the octagonal steel gasket for polishing and grinding, thereby improving the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0014] Figure 3 is a cross-sectional view of an octagonal steel washer of the present invention;

[0015] The names of the components marked in the figure are as follows: 1. Stand; 2. Grinding mechanism; 201. Grinder; 201a. Grinding bracket; 201b. Movable shaft; 201c. Grinding pressure plate; 202. Grinding belt; 203. Connecting plate; 3. Driving mechanism; 301. Pneumatic motor; 302. Transmission assembly; 302a. First bevel gear; 302b. Second bevel gear; 302c. Transmission shaft; 4. Positioning assembly; 401. Chuck; 401a. Clamping claw; 401b. Handle; 402. Telescopic long shaft; 403. First stopper; 404. Second stopper; 5. First rotating arm; 6. Bearing; 7. First connecting arm; 8. Second rotating arm; 9. Second connecting arm; 10. Spring; 11. Octagonal steel washer; 12. Octagonal steel washer sealing surface. DETAILED DESCRIPTION

[0016] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0017] Example: Please refer to Figure 1-3 A grinding device for an octagonal steel washer includes a stand 1, a grinding mechanism 2 and a driving mechanism 3 for driving the grinding mechanism 2 to rotate, wherein the driving mechanism 3 is installed on the stand 1, and a cross is provided on the top of the stand 1 for supporting the octagonal steel washer 11; the device also includes a positioning component 4, through which the octagonal steel washer 11 is positioned. Specifically, the positioning component 4 includes a chuck 401, a telescopic long shaft 402 and a first stopper 403, the chuck 401 is installed in the middle of the stand 1, the first stopper 403 is arranged on the telescopic long shaft 402, the telescopic long shaft 402 is connected to the cross through a clamping ring, the telescopic long shaft 402 is clearance-matched with the clamping ring, and the telescopic long shaft 402 is connected to the claw 401a of the chuck 401 Next, the side wall of the chuck 401 is provided with a handle 401b for adjusting the opening and closing of the claw 401a. By rotating the handle 401b, the claw 401a opens outward, and the claw 401a pushes the telescopic long shaft 402 and the first stop block 403 arranged on the telescopic long shaft 402 to move outward, so that the first stop block 403 pushes the octagonal steel washer 11, thereby realizing the position adjustment of the octagonal steel washer 11. In order to adjust the octagonal steel washer 11 to be concentric with the chuck 401, the chuck 401 adopts a four-jaw chuck 401, and the telescopic long shaft 402 corresponds to the claw 401a one by one. Rotating the handle 401b makes the four claws 401a move outward synchronously, so that the octagonal steel washer 11 is concentric with the chuck 401.

[0018] The driving mechanism 3 includes an air motor 301 and a transmission assembly 302. The air motor 301 is fixedly mounted on the cross. The transmission assembly 302 is connected to the output shaft of the air motor 301. The air motor 301 is used as a power source to drive the transmission assembly 302 to rotate. The transmission assembly 302 is movably connected to the chuck 401. Specifically, the transmission assembly 302 includes a first bevel gear 302a, a second bevel gear 302b and a transmission shaft 302c. The transmission shaft 302c is connected to the first rotating arm 5. The first bevel gear 302a is mounted on the output shaft of the air motor 301, and the second bevel gear 302b is mounted on the transmission shaft 302c. The first bevel gear 302a is connected to the first bevel gear 302a. The two bevel teeth 302b are meshed, and the transmission shaft 302c is rotatably connected to the chuck 401 through the bearing 6. When the pneumatic motor 301 is working, the transmission shaft 302c rotates under the action of the first bevel tooth 302a and the second bevel tooth 302b, thereby driving the first rotating arm 5 to make a circular motion; the grinding mechanism 2 includes two symmetrically arranged grinders 201, and the first rotating arm 5 is connected to the grinder 201 through the first connecting arm 7. Under the action of the first connecting arm 7, the grinder 201 and the first rotating arm 5 make a circular motion together; the grinding surface of each grinder 201 is provided with a grinding belt 202, and the octagonal steel washer 11 usually has four sealing surfaces, and the grinding belt 202 and The sealing surfaces 12 of the octagonal steel gasket are in contact with each other. Two symmetrical grinders 201 are used to grind the two opposite sealing surfaces 12 of the octagonal steel gasket at the same time. After the octagonal steel gasket 11 is turned over, the other two opposite sealing surfaces 12 of the octagonal steel gasket are grinded to further improve the grinding efficiency. The grinding belt 202 adopts a silicon carbide grinding belt 202 to further improve the grinding effect. The transmission shaft 302c is also connected to a second rotating arm 8, and a rotating arm bracket is provided on the transmission shaft 302c for connecting the first rotating arm 5 and the second rotating arm 8. The length of the second rotating arm 8 is less than the length of the first rotating arm 5. The lengths of the first rotating arm 5 and the second rotating arm 8 can be adjusted according to the octagonal steel gasket 11. The diameter of the angle steel washer 11 is customized, the second rotating arm 8 is connected to the second connecting arm 9, and the second connecting arm 9 is provided with two symmetrically arranged grinders 201, so the octagonal steel washer grinding equipment is provided with two groups of grinders 201, one group of grinders 201 is located in the outer ring, and the other group of grinders 201 is located in the inner ring. The grinder 201 of the outer ring is used to grind the octagonal steel washer 11 with a larger diameter, and the grinder 201 of the inner ring is used to grind the octagonal steel washer 11 with a smaller diameter, and the two groups of grinders 201 can perform grinding operations at the same time, so that the grinding efficiency is doubled; the telescopic long shaft 402 is also provided with a second stopper 404, which is used to position the octagonal steel washer 11 of the inner ring;Every two grinders 201 are connected by a connecting plate 203. The grinder 201 includes a grinding bracket 201a, a movable shaft 201b and a grinding plate 201c. The movable shaft 201b is clearance-matched with the grinding bracket 201a through a shaft sleeve. The grinding plate 201c is arranged at the end of the movable shaft 201b. The grinding belt 202 is fixed on the grinding plate 201c. A spring 10 is arranged between the grinding plate 201c and the grinding bracket 201a. In order to achieve uniform force on the grinding plate 201c, so that the grinding belt 202 on the grinding plate 201c is closely attached to the sealing surface 12 of the octagonal steel gasket, the spring 10 can be but is not limited to two springs 10, and the springs 10 are arranged along the circumference of the movable shaft 201b. Under the action of the spring 10, the grinding plate 201c and the grinding belt 202 are pressed against the sealing surface 12 of the octagonal steel gasket. ;

[0019] The working principle of this embodiment is as follows: when in use, the octagonal steel washer 11 is placed on the cross, wherein two octagonal steel washers 11 of different diameters can be placed at the same time, the octagonal steel washer 11 of smaller diameter is placed on the inner ring of the octagonal steel washer 11 of larger diameter, the handle 401b is rotated to make the four claws 401a of the chuck 401 move outward synchronously, thereby pushing the telescopic long shaft 402, under the action of the first stop block 403 and the second stop block 404, the octagonal steel washer 11 of the inner ring and the octagonal steel washer 11 of the outer ring are automatically aligned concentrically with the center of the chuck 401 as the reference, so that The grinding belt 202 on the grinder 201 can be attached to the corresponding octagonal steel gasket sealing surface 12, and the pneumatic motor 301 is started. The pneumatic motor 301 simultaneously drives the first rotating arm 5 and the second rotating arm 8 to perform circular motion, thereby driving the inner ring grinder 201 and the outer ring grinder 201 to perform grinding operations at the same time. Therefore, the present invention does not require manual polishing and grinding, improves the efficiency of polishing and grinding, and reduces labor costs and labor intensity of workers; wherein, under the action of the spring 10, the grinding belt 202 is tightly attached to the octagonal steel gasket sealing surface 12, further improving the grinding effect.

[0020] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An octagonal steel washer grinding device, characterized in that: The invention comprises a stand (1), a grinding mechanism (2) and a driving mechanism (3) for driving the grinding mechanism (2) to rotate, wherein the driving mechanism (3) is mounted on the stand (1), the grinding mechanism (2) comprises two symmetrically arranged grinders (201), the grinding surface of each grinder (201) is provided with a grinding belt (202), and the grinding belt (202) is in contact with an octagonal steel gasket sealing surface (12); and further comprises a positioning assembly (4), wherein the positioning assembly (4) comprises a chuck (401), a telescopic long shaft (402), and a positioning assembly (403). ) and a first stopper (403), the chuck (401) is installed in the middle of the platform (1), the first stopper (403) is arranged on the telescopic long shaft (402), the telescopic long shaft (402) is connected to the claw (401a) of the chuck (401), and the side wall of the chuck (401) is provided with a handle (401b) for adjusting the opening and closing of the claw (401a); the driving mechanism (3) comprises an air motor (301) and a transmission assembly (302), the transmission assembly (302) and the air motor (3 01), the transmission assembly (302) is movably connected to the chuck (401); the transmission assembly (302) comprises a first bevel tooth (302a), a second bevel tooth (302b) and a transmission shaft (302c); the transmission shaft (302c) is connected to a first rotating arm (5); the first bevel tooth (302a) is mounted on the output shaft of the pneumatic motor (301), the second bevel tooth (302b) is mounted on the transmission shaft (302c), the first bevel tooth (302a) and the second bevel tooth (302b) are movably connected to each other. (302b) is engaged, the transmission shaft (302c) is rotatably connected to the chuck (401) through a bearing (6), and the first rotating arm (5) is connected to the grinder (201) through a first connecting arm (7); the transmission shaft (302c) is also connected to a second rotating arm (8), the length of the second rotating arm (8) is less than the length of the first rotating arm (5), the second rotating arm (8) is connected to a second connecting arm (9), and the second connecting arm (9) is provided with two symmetrically arranged grinders (201).

2. The octagonal steel washer grinding equipment according to claim 1, characterized in that: The chuck (401) is a four-jaw chuck (401), and the telescopic long shaft (402) corresponds to the chuck jaws (401a) one by one.

3. The octagonal steel washer grinding equipment according to claim 1, characterized in that: The grinder (201) comprises a grinding bracket (201a), a movable shaft (201b) and a grinding pressure plate (201c); the movable shaft (201b) is loosely matched with the grinding bracket (201a) via a shaft sleeve; the grinding pressure plate (201c) is arranged at the end of the movable shaft (201b); and a spring (10) is provided between the grinding pressure plate (201c) and the grinding bracket (201a).

Images