Frequency conversion control cabinet for energy conservation of steam boiler

Abstract

The utility model relates to the field of frequency conversion control cabinets, in particular to a frequency conversion control cabinet for energy conservation of a steam boiler. The frequency conversion control cabinet comprises a cabinet body; the lifting structure comprises a threaded shaft rotatably mounted in the cabinet body, a sleeve seat matched with the threaded shaft, and a lifting seat connected with the sleeve seat; the driving structure comprises a rotating shaft rotatably mounted in the cabinet body, a driving gear arranged on the rotating shaft, and a driven gear arranged on the threaded shaft and meshed with the driving gear; and a limiting disc which is in clamping fit connection with the cabinet body is formed on the rotating shaft. The frequency conversion control cabinet for energy conservation of the steam boiler is provided with the lifting structure and the driving structure, elements can be driven to ascend and descend, labor cost is saved, and assembling efficiency is improved; and the structure is simple, the occupied space is small, and the assembly of elements is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter control cabinets, and specifically to a frequency converter control cabinet for energy saving in steam boilers. Background Technology

[0002] A steam boiler is an industrial boiler that heats water to certain parameters and produces high-temperature steam. Water is heated in the boiler drum and turns into steam, while fire generates heat in the furnace. The frequency converter control cabinet for steam boilers is mainly used to adjust the operating frequency of the steam boiler, reduce energy consumption, and enable smooth equipment startup, thereby reducing the damage to the motor caused by the large current generated when the equipment is started directly.

[0003] Existing frequency converter control cabinets typically consist of a cabinet and electrical components installed inside. These electrical components include many large and heavy parts, such as frequency converters and filters. Assembling these large and heavy components often requires multiple people: 2-3 people lift and adjust the components from the four corners, while one person secures them to the cabinet with bolts. This results in high labor costs and low assembly efficiency.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To improve or solve the technical problem in existing technologies where the assembly of large and heavy components requires multiple people, this utility model provides a variable frequency control cabinet for energy saving in steam boilers. The variable frequency control cabinet includes: a cabinet body; a lifting structure including a threaded shaft rotatably mounted inside the cabinet body, a sleeve seat mating with the threaded shaft, and a lifting seat connected to the sleeve seat; a drive structure including a rotating shaft rotatably mounted inside the cabinet body, a driving gear arranged on the rotating shaft, and a driven gear arranged on the threaded shaft and meshing with the driving gear; and a limiting disc formed on the rotating shaft that engages with the cabinet body.

[0006] This utility model discloses a variable frequency control cabinet for energy saving in steam boilers, comprising a cabinet, a lifting structure, and a drive structure. The lifting structure includes a threaded shaft, a sleeve seat, and a lifting seat. The sleeve seat is mounted on the threaded shaft and can move up and down when the threaded shaft rotates. The lifting seat is connected to the sleeve seat and can move up and down with the sleeve seat, thereby lifting and lowering larger and heavier components to a designated position. The drive structure includes a rotating shaft, a driving gear, and a driven gear. The driving gear is mounted on the rotating shaft, and the driven gear is mounted on the threaded shaft, driving the threaded shaft to rotate when the rotating shaft rotates. A limiting plate is formed on the rotating shaft and forms a snap-fit ​​connection with the cabinet, thereby fixing the rotating shaft and preventing it from rotating after the lifting seat rises to the designated position. This fixes the lifting seat at a designated height, facilitating component installation. Through the above configuration, this utility model discloses a variable frequency control cabinet for energy saving in steam boilers, which, with its lifting and drive structure, can lift and lower components, saving labor costs and improving assembly efficiency. Furthermore, its simple structure occupies little space and does not affect component assembly.

[0007] Furthermore, a fixing hole is provided on the cabinet; multiple limiting holes are provided on the limiting plate along the circumference of the limiting plate, and a limiting pin that matches the fixing hole is arranged in the limiting hole.

[0008] Furthermore, a hand crank is connected to one end of the rotating shaft, and the hand crank is detachably connected to the rotating shaft.

[0009] Furthermore, a limit key is formed on the rotating shaft, a connecting part is formed on the hand crank, and a limit groove matching the limit key is provided on the connecting part.

[0010] Furthermore, a receiving groove that matches the connecting part is provided on the limiting plate.

[0011] Furthermore, an abutment plate is formed on the threaded shaft, and a support seat for supporting the abutment plate is provided on the cabinet.

[0012] Furthermore, a hydraulic damping bearing is provided between the rotating shaft and the cabinet.

[0013] In summary, compared with the prior art, this utility model has the following beneficial effects:

[0014] (1) The lifting structure includes a threaded shaft, a sleeve seat and a lifting seat. The sleeve seat is installed on the threaded shaft and can drive the sleeve seat to rise and fall when the threaded shaft rotates. The lifting seat is connected to the sleeve seat and can rise and fall with the sleeve seat, thereby driving the larger and heavier components to rise and fall to the designated position.

[0015] (2) The drive structure includes a rotating shaft, a drive gear and a driven gear. The drive gear is mounted on the rotating shaft and the driven gear is mounted on the threaded shaft. When the rotating shaft rotates, it can drive the threaded shaft to rotate. The limit plate is formed on the rotating shaft and forms a snap-fit ​​connection with the cabinet to fix the rotating shaft and prevent the rotating shaft from rotating after the lifting seat rises to the specified position. It can fix the lifting seat at the specified height, which facilitates the installation of components. Attached Figure Description

[0016] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0017] Figure 1 This is a schematic diagram of an embodiment of the variable frequency control cabinet for energy saving in steam boilers according to this utility model;

[0018] Figure 2 This is a schematic diagram of the drive structure in a frequency converter control cabinet for energy saving in steam boilers according to this utility model.

[0019] List of reference numerals in the attached drawings: 1. Cabinet; 11. Mounting plate; 12. Connecting plate; 13. Support base; 2. Lifting structure; 21. Threaded shaft; 22. Sleeve base; 23. Lifting base; 24. Abutment plate; 3. Drive structure; 31. Rotating shaft; 32. Drive gear; 33. Driven gear; 34. Hydraulic damping bearing; 35. Limiting plate; 36. Limiting pin; 4. Hand crank; 41. Connecting part. Detailed Implementation

[0020] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0021] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] To improve or solve the technical problem of requiring multiple people to assemble large and heavy components in existing technologies, this utility model provides a variable frequency control cabinet for energy saving in steam boilers. The variable frequency control cabinet includes: a cabinet body 1; a lifting structure 2, including a threaded shaft 21 rotatably mounted inside the cabinet body 1, a sleeve seat 22 mating with the threaded shaft 21, and a lifting seat 23 connected to the sleeve seat 22; a drive structure 3, including a rotating shaft 31 rotatably mounted inside the cabinet body 1, a driving gear 32 arranged on the rotating shaft 31, and a driven gear 33 arranged on the threaded shaft 21 and meshing with the driving gear 32; and a limiting plate 35 formed on the rotating shaft 31 that engages with the cabinet body 1.

[0024] Figure 1 This is a schematic diagram of an embodiment of the variable frequency control cabinet for energy saving in steam boilers according to this utility model. Figure 1 As shown, in one or more embodiments, the variable frequency control cabinet for energy saving of steam boilers according to this utility model includes a cabinet body 1, a lifting structure 2 and a drive structure 3.

[0025] See also Figure 1 The cabinet 1 includes a frame and connecting plates 12 mounted on the frame. A front door is located on the front side of the frame, and a rear door is located on the rear side. A mounting plate 11 is located on the front side of the frame, abutting against the front door. The connecting plates 12 are arranged within the frame, extending horizontally and multiple plates 12 are arranged side-by-side vertically. Through holes are provided in the connecting plates 12 for mounting electrical components.

[0026] Figure 2 This is a schematic diagram of the drive structure in a frequency converter control cabinet for energy saving in steam boilers, according to this utility model. Figure 1 and Figure 2As shown, the lifting structure 2 is installed inside the cabinet 1. In one or more embodiments, the lifting structure 2 includes a threaded shaft 21 rotatably installed inside the cabinet 1, a sleeve seat 22 sleeved on the threaded shaft 21, and a lifting seat 23 connected to the sleeve seat 22. Two threaded shafts 21 are provided, arranged left and right opposite each other. Further, a first bearing seat is provided at the top of the cabinet 1, and the top end of the threaded shaft 21 is arranged in the first bearing seat. A support seat 13 is provided near the bottom of the cabinet 1, and an abutment plate 24 is formed on the threaded shaft 21. The abutment plate 24 abuts against the support seat 13 to support the threaded shaft 21. Specifically, the support seat 13 is generally L-shaped and includes a first arm connected to the cabinet 1 and a second arm connected to the first arm. The first arm is fixed to the cabinet 1 by bolts. A second bearing seat is provided on the second arm, and the threaded shaft 21 is rotatably connected to the second bearing seat, with the bottom end of the threaded shaft 21 extending out of the second bearing seat. Furthermore, the sleeve seat 22 is fitted around the circumferential outer side of the threaded shaft 21 and is fixedly connected to the lifting seat 23 by bolts. The lifting seat 23 is generally rectangular in shape and has a through hole for the threaded shaft 21 to pass through. It is understood that the front and rear sides of the lifting seat 23 are close to the mounting plate 11 and the connecting plate 12, respectively, so that the lifting seat 23 does not affect the installation of electrical components when it is raised and lowered; and after the lifting seat 23 rises to the designated position, the operator adjusts the position of the components.

[0027] See also Figure 1 and Figure 2 The drive structure 3 is mounted on the cabinet 1 and connected to the lifting structure 2. In one or more embodiments, the drive structure 3 includes a rotatable shaft 31 mounted inside the cabinet 1, a drive gear 32 arranged on the shaft 31, and a driven gear 33 arranged on the threaded shaft 21. Both the drive gear 32 and the driven gear 33 are helical gears. The driven gear 33 is located at the bottom end of the threaded shaft 21. The drive gear 32 and the driven gear 33 mesh, thereby driving the threaded shaft 21 to rotate when the shaft 31 rotates. Specifically, both ends of the shaft 31 are rotatably mounted on the cabinet 1. A hydraulic damping bearing 34 is provided between the cabinet 1 and the shaft 31. The hydraulic damping bearing 34 is mounted on the cabinet 1, and the shaft 31 is inserted into the hydraulic damping bearing 34. Furthermore, there are two drive gears 32, which are located near the two ends of the rotating shaft 31 respectively. The two drive gears 32 mesh with the driven gears 33 of the two threaded shafts 21 respectively, so that when the rotating shaft 31 rotates, it drives the two threaded shafts 21 to rotate.

[0028] See also Figure 1 and Figure 2A limiting plate 35 is formed on the rotating shaft 31 to engage with the cabinet 1. Specifically, the limiting plate 35 is roughly disc-shaped and can be integrally formed with the rotating shaft 31 or fixedly connected by welding. Multiple limiting holes are formed on the limiting plate 35, evenly spaced along its circumference. Limiting pins 36 are provided within the limiting holes, and fixing holes are provided on the cabinet 1. The limiting pins 36 pass through the limiting holes and fixing holes, fixing the limiting plate 35 to the cabinet 1 and preventing rotation of the limiting plate 35 and the rotating shaft 31. Furthermore, a hand crank 4 is connected to one end of the rotating shaft 31, forming a detachable connection with the rotating shaft 31. Specifically, limiting keys are provided on the rotating shaft 31, extending along its length, and multiple limiting keys are arranged along its circumference. A connecting portion 41 is formed on the side of the hand crank 4 near the rotating shaft 31. The connecting portion 41 has a through hole that matches the rotating shaft 31 and a limiting groove connected to the through hole. The limiting groove matches a limiting key, allowing the hand crank 4 to rotate synchronously with the rotating shaft 31. Furthermore, a receiving groove that matches the connecting portion 41 is formed on the limiting plate 35. For example, a flat key can be provided in the receiving groove, allowing the connecting portion 41 to connect to both the rotating shaft 31 and the limiting plate 35 simultaneously, enhancing the connection stability between the rotating shaft 31 and the hand crank 4.

[0029] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A frequency control cabinet for energy saving of steam boilers, characterized in that, The utility model relates to a cabinet lifting device, including: a cabinet body (1); a lifting structure (2) comprising a threaded shaft (21) rotatably mounted in the cabinet body (1), a sleeve base (22) matched with the threaded shaft (21), and a lifting base (23) connected with the sleeve base (22); a driving structure (3) comprising a rotating shaft (31) rotatably mounted in the cabinet body (1), a driving gear (32) arranged on the rotating shaft (31), and a driven gear (33) arranged on the threaded shaft (21) and meshed with the driving gear (32); a limiting disc (35) is formed on the rotating shaft (31) and connected with the cabinet body (1) in a clamping manner.

2. A frequency conversion control cabinet for energy saving of a steam boiler according to claim 1, characterized in that, A fixing hole is formed on the cabinet body (1); a plurality of limiting holes are formed on the limiting disc (35) along the circumference of the limiting disc (35), and a limiting pin (36) matched with the fixing hole is arranged in the limiting hole.

3. A frequency conversion control cabinet for energy saving of a steam boiler according to claim 1, characterized in that, One end of the rotating shaft (31) is connected with a hand wheel (4), and the hand wheel (4) is detachably connected with the rotating shaft (31).

4. A frequency conversion control cabinet for energy saving of a steam boiler according to claim 3, characterized in that, A limiting key is formed on the rotating shaft (31), a connecting part (41) is formed on the hand wheel (4), and a limiting groove matched with the limiting key is formed on the connecting part (41).

5. A frequency conversion control cabinet for energy saving of steam boilers according to claim 4, characterized in that, An accommodating groove matched with the connecting part (41) is formed on the limiting disc (35).

6. A frequency conversion control cabinet for energy saving of steam boilers according to claim 1, characterized in that, An abutting disc (24) is formed on the threaded shaft (21), and a supporting base (13) supporting the abutting disc (24) is arranged on the cabinet body (1).

7. A frequency conversion control cabinet for energy saving of steam boilers according to claim 1, characterized in that, A hydraulic damping bearing (34) is arranged between the rotating shaft (31) and the cabinet body (1).

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