Executing mechanism of coke tower gate valve and coke tower gate valve

Abstract

The utility model relates to the field of delayed coking devices in the petrochemical industry, and discloses an executing mechanism of a coke tower gate valve and the coke tower gate valve. The speed reducer is in transmission connection with the driving part; the two transmission shafts are connected to the output ends of the two sides of the speed reducer respectively and extend from the speed reducer in the opposite directions, and first bevel gears are arranged at the output ends of the transmission shafts; the two lead screws are symmetrically arranged on the two sides of the speed reducer and are perpendicular to the extending direction of the transmission shaft, the first ends of the lead screws are connected with second bevel gears meshed with the first bevel gears, and the second ends of the lead screws are in transmission connection with a gate plate at the top of the coke tower so as to drive the gate plate to move in the horizontal direction. According to the technical scheme, the first bevel gear and the second bevel gear are adopted for transmission between the speed reducer and the lead screw, first-stage transmission is achieved, the transmission efficiency is high, disassembly and assembly are convenient, time used for installation and maintenance is short, and operation is more efficient.

Description

Technical Field

[0001] This utility model relates to the field of delayed coking equipment in the petrochemical industry, specifically to an actuator of a coke tower gate valve and the coke tower gate valve itself. Background Technology

[0002] Delayed coking units are continuous production processes with alternating operation of the coke tower. The coke tower is the core equipment of the coking unit. During production, the coke tower top cover machine needs to be opened and closed frequently, which poses certain safety hazards. Once an accident occurs, the damage will be extremely serious.

[0003] Currently, electric double-dark-bar gate valves are used to switch the top cover of the coking tower. A motor controls the rotation of a lead screw, which connects to a gate. The gate's opening and closing are achieved by controlling its movement. The motor is connected to a reducer, and the reducer's output shaft is connected to the input shafts of two left and right steering gears via couplings. The steering gear output shafts are then connected to the two lead screws via couplings. The steering gears have low transmission efficiency, are inconvenient to assemble and disassemble, and require considerable time. Over time, the two lead screws cannot operate synchronously, resulting in a high failure rate. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of low transmission efficiency, inconvenient disassembly and assembly, and long disassembly and assembly time in the existing technology.

[0005] To achieve the above objectives, this utility model provides an actuator for a coke tower gate valve, comprising: a driving component;

[0006] A speed reducer is a transmission component connected to a drive unit.

[0007] Two drive shafts, each connected to the output end of a reducer and extending from the reducer in opposite directions, are provided with a first bevel gear at the output end of each drive shaft; and...

[0008] The lead screw is symmetrically arranged on both sides of the reducer and perpendicular to the extension direction of the drive shaft. The first end of the lead screw is connected to a second bevel gear that meshes with the first bevel gear, and the second end of the lead screw is connected to a gate at the top of the coke tower to drive the gate to move horizontally.

[0009] In some embodiments, the first bevel gear drive shaft is sleeved outside the drive shaft along its length.

[0010] In some embodiments, the first bevel gears on both sides are at different distances from the reducer. The first bevel gear that is closer to the reducer is located between one of the lead screws and the reducer, while the first bevel gear that is farther from the reducer is located on the side of the lead screw facing away from the reducer.

[0011] In some embodiments, the actuator further includes a mounting plate and a bearing. The mounting plate is located at the bottom of the actuator and is used to mount the various components. The bearing is rotatably connected to the end of the drive shaft and its bottom is fixedly connected to the mounting plate.

[0012] In some embodiments, the bearings at both ends of the drive shaft are tapered roller bearings and deep groove ball bearings, respectively. The tapered roller bearings are connected to the drive shaft on the side of the first bevel gear that is closer to the reducer, and the deep groove ball bearings are connected to the drive shaft on the side of the first bevel gear that is farther from the reducer.

[0013] In some embodiments, the diameters of the drive shafts on both sides are different, with the diameter of the drive shaft on the side where the first bevel gear is located, which is farther from the reducer, being larger than the diameter of the drive shaft on the side where the first bevel gear is located, which is closer to the reducer.

[0014] In some embodiments, a sleeve is screwed onto the lead screw, and the end of the sleeve away from the second bevel gear is fixedly connected to the gate plate. The sleeve can move horizontally under the drive of the lead screw.

[0015] In some embodiments, a guide sleeve is slidably connected to the outside of the sleeve, and the guide sleeve can guide the movement direction of the sleeve.

[0016] In some embodiments, a connecting block is provided between the sleeve and the gate, one end of the connecting block is fixedly connected to the sleeve, and the connecting block and the gate are respectively provided with through holes, and a connecting pin is provided in the through hole to fix the connecting block and the gate.

[0017] The second aspect of this utility model provides a coke tower gate valve, which includes the aforementioned actuator, valve body, and gate located in the valve body.

[0018] Through the above technical solution, the reducer and the lead screw are driven by a first bevel gear and a second bevel gear that are perpendicular to each other. This is a single-stage transmission with high transmission efficiency. It is also easy to disassemble and assemble, requires less time for installation and maintenance, and makes the entire actuator operate more efficiently. Attached Figure Description

[0019] Figure 1 This is a top view of the actuator of an embodiment of this utility model;

[0020] Figure 2 This is a front view of the actuator of an embodiment of this utility model;

[0021] Figure 3 This is a right view of the actuator of an embodiment of this utility model;

[0022] Figure 4 This is a top view of the connection between the lead screw and the gate in an embodiment of this utility model;

[0023] Figure 5This is a front view of the coke tower gate valve according to an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Gate plate; 2. Drive component; 3. Reducer; 4. Drive shaft; 5. Bevel gear set; 51. First bevel gear; 52. Second bevel gear; 6. Lead screw; 7. Bearing; 71. Tapered roller bearing; 72. Deep groove ball bearing; 8. Mounting plate; 9. Sleeve; 10. Guide sleeve; 11. Connecting block; 12. Connecting pin; 13. Valve body; 14. Coke tower; 15. Fixed bracket. Detailed Implementation

[0026] In this invention, unless otherwise stated, directional terms such as "up," "down," "left," "right," "inner," and "outer" are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] To address the problems of low transmission efficiency, inconvenient disassembly and assembly, and time-consuming operation of existing coke tower gate valve actuators, this utility model provides an actuator for a coke tower gate valve, such as... Figures 1-4As shown, the actuator of the coke tower gate valve includes: a drive component 2, which can be a motor as in the prior art; a reducer 3, which is drivenly connected to the drive component 2, and the output shaft of the drive component 2 is connected to the input shaft of the reducer 3, the output shaft of the drive component 2 being able to rotate to drive the reducer 3; two drive shafts 4, which are respectively connected to the output ends on both sides of the reducer 3 and extend from the reducer 3 in opposite directions, the output ends of the drive shafts 4 are provided with a first bevel gear 51, the output ends of the reducer 3 being able to rotate and drive the drive shafts 4 and the first bevel gear 51 to rotate; and a lead screw 6, which is symmetrically arranged on the reducer. On both sides of the speed reducer 3, at least one set of symmetrical lead screws 6 are provided. The lead screws 6 are perpendicular to the extension direction of the transmission shaft 4. The first end of the lead screw 6 is connected to a second bevel gear 52 that meshes with the first bevel gear 51. The first bevel gear 51 and the second bevel gear 52 are perpendicular to each other and the second bevel gear 52 is driven to rotate synchronously by the first bevel gear 51, so that the lead screw 6 rotates synchronously. The second end of the lead screw 6 is connected to the gate plate 1 at the top of the coke tower 14 and can drive the gate plate 1 to move in the horizontal direction so that the top of the coke tower 14 is opened or closed. The degree of opening of the top of the coke tower 14 is controlled by controlling the distance the gate plate 1 moves. Through the above technical solution, the entire actuator is driven by the drive component 2, and is transmitted to the lead screw 6 in sequence through the reducer 3, the transmission shaft 4, the first bevel gear 51 and the second bevel gear 52. The reducer 3 and the lead screw 6 are driven by the bevel gear set 5 (i.e. the first bevel gear 51 and the second bevel gear 52), which is a single-stage transmission. Compared with the multi-stage transmission steering gear in the prior art, the transmission efficiency is higher, and it is convenient to disassemble and assemble, and the installation and maintenance time is less.

[0028] In some embodiments, such as Figures 1-2 As shown, the first bevel gear 51 is sleeved on the outside of the drive shaft 4 along its length. The first bevel gear 51 is sleeved on the outside of the drive shaft 4 according to the positions of the lead screw 6 and the second bevel gear 52, making the rotation of the first bevel gear 51 more stable and reducing the failure rate. Of course, the first bevel gear 51 can also be located at the end of the drive shaft 4, but the stability is not as good as when the first bevel gear 51 is sleeved on the outside of the drive shaft 4. Specifically, a fixing sleeve and adjusting shims are provided between the first bevel gear 51 and the drive shaft 4 to ensure that the first bevel gear 51 is stably sleeved on the outside of the drive shaft 4. The second bevel gear 52 is fixed to the end of the lead screw 6 by shims and pins.

[0029] In some embodiments, such as Figure 1As shown, the distances between the first bevel gears 51 on both sides and the reducer 3 are different. The first bevel gear 51 closer to the reducer 3 is located between one of the lead screws 6 and the reducer 3, while the first bevel gear 51 farther from the reducer 3 is located on the side of the lead screw 6 facing away from the reducer 3. In this way, the bevel gear sets 5 on both sides of the reducer 3 face the same direction, making installation and disassembly more convenient, reducing time, and improving installation efficiency. Of course, the arrangement of the first bevel gears 51 on both sides of the reducer 3 can also be exactly the same.

[0030] In some embodiments, such as Figure 1 As shown, the actuator also includes a mounting plate 8 and a bearing 7. The mounting plate 8 is located at the bottom of the actuator and is used to mount various components. The bearing 7 is rotatably connected to the end of the drive shaft 4 and its bottom is fixedly connected to the mounting plate 8, providing support for the drive shaft 4 and making the operation of the drive shaft 4 more stable. The bottom of the reducer 3 is fixedly mounted on the mounting plate 8. Furthermore, as a preferred embodiment, Figure 1 The drive component 2 is connected to the top of the reducer 3 by a gasket and bolts. Alternatively, the drive component 2 can be set on both sides of the reducer 3 perpendicular to the transmission shaft 4. The bottom of the drive component 2 is fixed to the mounting plate 8.

[0031] In some embodiments, such as Figure 1 As shown, the bearings 7 at both ends of the drive shaft 4 are tapered roller bearings 71 and deep groove ball bearings 72, respectively. For ease of disassembly and assembly, the tapered roller bearings 71 are connected to the end of the drive shaft 4 on the side closer to the reducer 3 where the first bevel gear 51 is located, and the deep groove ball bearings 72 are connected to the end of the drive shaft 4 on the side farther from the reducer 3 where the first bevel gear 51 is located. During disassembly, from... Figure 1 Disassemble from right to left, which takes less time; during installation, start from... Figure 1 Installing from left to right takes less time, improves work efficiency, and reduces coke tower downtime. Of course, any other type of bearing can also be selected.

[0032] In some embodiments, such as Figure 1 As shown, the diameters of the drive shafts 4 on both sides are different. The diameter of the drive shaft 4 on the side where the first bevel gear 51 is located, which is farther from the reducer 3, is larger than that on the side where the first bevel gear 51 is located, which is closer to the reducer 3. This arrangement reduces disassembly and assembly time and improves the problem of high noise during long-term use caused by the same shaft diameter on both sides of the drive shaft 4. Accordingly, the specifications of the tapered roller bearing 71 and the deep groove ball bearing 72 are also selected according to the diameter of the drive shaft 4.

[0033] In some embodiments, such as Figure 4As shown, a sleeve 9 is screwed onto the outside of the lead screw 6. The end of the sleeve 9 away from the second bevel gear 52 is fixedly connected to the gate plate 1. When the lead screw 6 rotates, the sleeve 9 moves along the length of the lead screw 6 and drives the gate plate 1 to move together in the horizontal direction, so that the top of the coke tower 14 opens or closes. The degree to which the top of the coke tower 14 opens is controlled by controlling the distance the gate plate 1 moves.

[0034] In some embodiments, such as Figure 4 As shown, a guide sleeve 10 is slidably connected to the outside of the sleeve 9. The length direction of the guide sleeve 10 is parallel to that of the sleeve 9, which can guide the movement direction of the sleeve 9 and prevent the sleeve 9 from deviating during movement.

[0035] In some embodiments, such as Figure 4 As shown, a connecting block 11 is provided between the sleeve 9 and the gate 1. One end of the connecting block 11 is fixedly connected to the sleeve 9. The connecting block 11 and the gate 1 are respectively provided with through holes. A connecting pin 12 is provided in the through hole to fix the connecting block 11 and the gate 1 together. Thus, the sleeve 9 can stably drive the gate 1 to move.

[0036] In addition, such as Figure 5 As shown, the actuator also includes a protective cover to isolate the internal components from the outside environment, extending its service life. Figure 4 As shown, the mounting plate 8 is also equipped with a fixed bracket 15. The end of the lead screw 6 and the guide sleeve 10 are respectively fixed to the fixed bracket 15 by bearings and bolts. The sleeve 9 is slidably connected to the fixed bracket. The fixed bracket 15 lifts the entire lead screw mechanism, so that the sleeve 9 does not contact the mounting plate 8 when sliding, and also serves to fix the lead screw 6 and the guide sleeve 10. The above-mentioned lead screw structure can still maintain synchronous operation on both sides during long-term operation, with a low failure rate.

[0037] This utility model also includes a coke tower gate valve, such as Figure 5 As shown, the coke tower gate valve includes the aforementioned actuator, valve body 13, and gate 1 located within the valve body 13. The valve body 13 is positioned above the coke tower 14, and the gate 1 covers the top opening of the coke tower 14. The actuator drives the gate 1 to move horizontally, opening or closing the top of the coke tower 14, and controls the degree to which the top of the coke tower 14 is opened by controlling the distance the gate 1 moves.

[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A coke drum gate valve actuator, characterized by, The utility model relates to a coke oven top gate drive mechanism, which comprises: a driving member (2); a speed reducer (3) drivingly connected to the driving member (2); two transmission shafts (4) respectively connected to the output ends of the speed reducer (3) on both sides and extending in opposite directions from the speed reducer (3), the output end of the transmission shaft (4) being provided with a first bevel gear (51); and screws (6) symmetrically arranged on both sides of the speed reducer (3) and perpendicular to the extension direction of the transmission shaft (4), the first end of the screw (6) being connected to a second bevel gear (52) meshing with the first bevel gear (51), the second end of the screw (6) being drivingly connected to a gate (1) at the top of a coke oven to drive the gate (1) to move in the horizontal direction.

2. The actuator for a coke drum gate valve of claim 1, wherein, The first bevel gear (51) is sleeved on the transmission shaft (4) in the length direction of the transmission shaft (4).

3. The actuator for a coke drum gate valve of claim 2, wherein, The first bevel gears (51) on both sides are different in distance from the speed reducer (3), the first bevel gear (51) closer to the speed reducer (3) being located between the speed reducer (3) and one of the screws (6), and the first bevel gear (51) farther from the speed reducer (3) being located on the side of the screw (6) away from the speed reducer (3).

4. The actuator for a coke drum gate valve of claim 3, wherein, The actuator further comprises a mounting plate (8) arranged at the bottom of the actuator and used for mounting various components and a bearing (7) rotationally connected to the end of the transmission shaft (4) and fixedly connected to the bottom of the mounting plate (8).

5. The actuator for a coke drum gate valve of claim 4, wherein, The bearings (7) at the two ends of the transmission shaft (4) are respectively a tapered roller bearing (71) and a deep groove ball bearing (72), wherein the tapered roller bearing (71) is connected to the transmission shaft (4) on the side of the first bevel gear (51) closer to the speed reducer (3), and the deep groove ball bearing (72) is connected to the transmission shaft (4) on the side of the first bevel gear (51) farther from the speed reducer (3).

6. The coke drum gate valve actuator of claim 4, wherein, The diameters of the transmission shafts (4) on both sides are different, the diameter of the transmission shaft (4) on the side of the first bevel gear (51) farther from the speed reducer (3) being greater than that of the transmission shaft (4) on the side of the first bevel gear (51) closer to the speed reducer (3).

7. The actuator for a coke drum gate valve of claim 1, wherein, A sleeve (9) is screwed onto the screw (6), one end of the sleeve (9) away from the second bevel gear (52) being fixedly connected to the gate (1), and the sleeve (9) being capable of moving in the horizontal direction under the drive of the screw (6).

8. The actuator for a coke drum gate valve of claim 7, wherein, A guide sleeve (10) is slidingly connected to the sleeve (9), the guide sleeve (10) being capable of guiding the moving direction of the sleeve (9).

9. The actuator for a coke drum gate valve of claim 7, wherein, A connecting block (11) is arranged between the sleeve (9) and the gate (1), one end of the connecting block (11) being fixedly connected to the sleeve (9), a through hole being provided on the connecting block (11) and the gate (1), and a coupling pin (12) being arranged in the through hole to fixedly connect the connecting block (11) and the gate (1).

10. A coke drum gate valve characterized by, The coke drum gate valve comprises the actuator according to any one of claims 1-9, a valve body (13) and a gate (1) located in the valve body (13).

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