Frequency conversion controller of dust removal fan

Abstract

The frequency conversion controller comprises a PLC main body, the PLC main body is provided with a plurality of wiring ports which are uniformly distributed, the wiring ports are provided with accommodating grooves and fixed cylinders, the fixed cylinders are provided with movable grooves communicated with the accommodating grooves, the movable grooves are internally provided with fixed plates and connecting plates which are distributed up and down, and the fixed plates and the connecting plates are connected with the PLC main body. A column rod is arranged on the connecting plate in a sliding mode, a top plate and a bottom plate are arranged at the two ends of the column rod respectively, the bottom plate can be completely contained in the containing groove, a driving piece is arranged on the fixing plate in a sliding mode, an elastic piece is arranged between the top plate and the connecting plate, and a transmission piece is arranged between the top plate and the movable groove. The driving part drives the top plate to linearly move. According to the utility model, a screw fixing mode in the prior art is abandoned for wiring, additional tools are not needed during wiring, the operation is convenient, the time is saved, and the wiring efficiency is improved, so that the wiring device is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency conversion control, in particular to a dust removal fan frequency conversion controller. Background Art

[0002] PLC stands for Programmable Logic Controller. It uses a type of programmable memory to store programs internally, execute user-oriented instructions such as logical operations, sequential control, timing, counting and arithmetic operations, and control various types of machinery or production processes through digital or analog input / output. PLC has a wide range of applications. For example, it can be used in conjunction with an edge computing host and a dust removal fan to achieve dust removal in a workshop. After the staff entering the workshop are identified by the AI ​​algorithm, the corresponding edge computing host converts the behavior analysis results into instructions acceptable to the PLC, and controls the start and stop of the fan by modifying the PLC's instruction program, so as to achieve the effect of reducing costs and increasing efficiency and saving energy.

[0003] In the prior art, PLC is wired by screw fixing. When wiring, the end of the connecting wire is inserted into the wiring port and the screw is tightened by a screwdriver. This method is cumbersome to operate and takes a lot of time. It also requires the use of additional tools, and the wiring efficiency is low. Utility Model Content

[0004] The utility model aims to provide a dust removal fan frequency conversion controller, which does not require additional tools during wiring, is easy to operate, saves time, improves wiring efficiency, and is therefore more practical.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A variable frequency controller for a dust removal fan, comprising a PLC main body, a plurality of evenly distributed wiring ports are arranged on the PLC main body, a receiving groove and a fixed cylinder are arranged on the wiring port, a movable groove connected to the receiving groove is opened on the fixed cylinder, a fixed plate and a connecting plate distributed up and down are arranged in the movable groove, a column rod is slidably arranged on the connecting plate, a top plate and a bottom plate are respectively arranged at both ends of the column rod, and the bottom plate can be completely received in the receiving groove, a driving member is slidably arranged on the fixed plate, an elastic member is arranged between the top plate and the connecting plate, a transmission member is arranged between the top plate and the movable groove, the top plate is driven to move linearly by the driving member, and the top plate is rotated while the linear movement is realized by the transmission member, a locking member is arranged on the fixed cylinder, and the driving member is locked or unlocked by the locking member;

[0007] The driving member comprises a slide bar slidably arranged on the fixed plate, and a driving plate and a hemispherical block are respectively arranged at both ends of the slide bar, the driving plate is in contact with and overlapped with the top plate, and the hemispherical block is locked or unlocked by a locking member;

[0008] The transmission member comprises a spiral groove which is provided in the fixed cylinder and communicates with the movable groove, and the top plate is provided with a convex block which is slidably matched with the spiral groove;

[0009] The elastic member comprises a ring plate movably sleeved on the column rod, and a compression spring sleeved on the column rod is arranged between the ring plate and the connecting plate;

[0010] The locking member includes a fixed block arranged on a fixed cylinder, a cross bar is slidably arranged on the fixed block, a limit block and a wedge block are respectively arranged at both ends of the cross bar, the wedge block and the hemispherical block are abutted and overlapped, and a return spring sleeved on the cross bar is arranged between the wedge block and the fixed block.

[0011] Furthermore, two symmetrically distributed dust covers are hinged on the PLC body.

[0012] Furthermore, a protective pad is provided on one side of the base plate away from the pole, and the material of the protective pad is EPDM rubber.

[0013] Furthermore, the entrance of the wiring port is structured in a cone shape that expands outwards.

[0014] The beneficial effects of the utility model are as follows:

[0015] No additional tools are required for wiring, which is easy to operate, saves time, and improves wiring efficiency, making it more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the wiring port in the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the wiring port in the utility model;

[0019] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 5 yes Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0021] Figure 6 yes Figure 3 Schematic diagram of the enlarged structure at point C in the middle.

[0022] Figure numerals: 1. PLC body; 2. Wiring port; 3. Receiving groove; 4. Fixed cylinder; 5. Movable groove; 6. Fixed plate; 7. Connecting plate; 8. Column rod; 9. Top plate; 10. Bottom plate; 11. Driving member; 1101. Sliding rod; 1102. Driving plate; 1103. Hemispherical block; 12. Elastic member; 1201. Ring plate; 1202. Extrusion spring; 13. Transmission member; 1301. Spiral groove; 1302. Protrusion; 14. Locking member; 1401. Fixed block; 1402. Cross bar; 1403. Limit block; 1404. Wedge block; 1405. Reset spring; 15. Dust cover; 16. Protective pad. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0024] like Figure 1-Figure 5 As shown, a dust removal fan variable frequency controller proposed by the utility model comprises a PLC main body 1, a plurality of evenly distributed wiring ports 2 are arranged on the PLC main body 1, a receiving groove 3 and a fixed cylinder 4 are arranged on the wiring port 2, the fixed cylinder 4 is in a vertical direction and fixedly arranged on the wiring port 2, a movable groove 5 connected with the receiving groove 3 is opened on the fixed cylinder 4, the movable groove 5 and the receiving groove 3 are both in a vertical direction and distributed up and down, a fixed plate 6 and a connecting plate 7 distributed up and down are arranged in the movable groove 5, the fixed plate 6 and the connecting plate 7 are both in a horizontal direction and fixedly arranged in the movable groove 5, a column rod 8 is slidably arranged on the connecting plate 7, and the column rod 8 is in a vertical direction And slide in the vertical direction, the two ends of the column 8 are respectively provided with a top plate 9 and a bottom plate 10, the top plate 9 and the bottom plate 10 are both in the vertical direction and are respectively fixed at the top and the bottom of the column 8, the bottom plate 10 can be completely received in the accommodating groove 3, a driving member 11 is slidably provided on the fixed plate 6, an elastic member 12 is provided between the top plate 9 and the connecting plate 7, a transmission member 13 is provided between the top plate 9 and the movable groove 5, the top plate 9 is driven to move linearly by the driving member 11, and the top plate 9 is realized by the transmission member 13. The linear movement and rotation of the top plate 9 are realized simultaneously, and a locking member 14 is provided on the fixed cylinder 4, and the driving member 11 is locked or unlocked by the locking member 14;

[0025] When the bottom plate 10 is in the receiving groove 3, the elastic member 12 is in the natural state. When wiring, the end of the connecting line is inserted into the wiring port 2, and the top plate 9 is driven downward by the driving member 11 to drive the column rod 8 and the bottom plate 10 to move downward together, and the bottom plate 10 withdraws from the receiving groove 3. In this process, the elastic member 12 is in the squeezed state, and the top plate 9 is rotated while the linear motion is realized by the transmission member 13, and the column rod 8 and the bottom plate 10 rotate together until the bottom plate 10 and the connecting line are in contact and overlapped, and finally the driving member 11 is locked by the locking member 14 to keep the position of the bottom plate 10 unchanged, thereby fixing the connecting line. On the contrary, the driving member 11 is unlocked by the locking member 14, and the elastic member 12 will be reset to the natural state due to being squeezed, and the bottom plate 10, the column rod 8, the top plate 9 and the driving member 11 will move upward to the initial position together, and the bottom plate 10 is completely received in the receiving groove 3, and the connecting line can be separated from the wiring port 2.

[0026] In summary, the utility model abandons the wiring method of screw fixing in the prior art, does not require additional tools during wiring, is easy to operate, saves time, improves wiring efficiency, and is therefore more practical.

[0027] like Figure 1 As shown, in some embodiments, two symmetrically distributed dust covers 15 are hinged on the PLC body 1;

[0028] Referring to the above, when there is no need for wiring or the PLC main body 1 is being transported or transferred, the dustproof cover 15 is used to protect the multiple wiring ports 2 from dust. When wiring, the dustproof cover 15 can be opened.

[0029] like Figure 4 As shown, in some embodiments, a protective pad 16 is provided on one side of the bottom plate 10 away from the pole 8, and the protective pad 16 is fixedly connected to the bottom plate 10, and the material of the protective pad 16 is EPDM rubber;

[0030] Referring to the above, when the base plate 10 and the connecting wire are in contact and overlapped, the protective pad 16 plays a protective role to prevent the connecting wire from being damaged due to direct contact with the base plate 10. At the same time, EPDM rubber with good aging resistance is selected as the material of the protective pad 16, which not only improves the service life but also plays an insulating role.

[0031] like Figure 2 As shown, in some embodiments, the entrance of the wiring port 2 is structured in a cone shape that expands outward;

[0032] Referring to the above, when inserting the end of the connecting wire into the wiring port 2, the tapered design can make the insertion of the end of the connecting wire more convenient and smooth.

[0033] like Figure 3-Figure 5As shown, in some embodiments, the driving member 11 includes a slide bar 1101 slidably arranged on the fixed plate 6, the slide bar 1101 is in a vertical direction and slides in the vertical direction, and a driving plate 1102 and a hemispherical block 1103 are respectively arranged at both ends of the slide bar 1101, the driving plate 1102 and the hemispherical block 1103 are both in a horizontal direction and are respectively fixed at the bottom and top of the slide bar 1101, the driving plate 1102 is in contact with and overlaps the top plate 9, and the hemispherical block 1103 is locked or unlocked by the locking member 14;

[0034] Referring to the above, in the initial state, the hemispherical block 1103 is located outside, and the two sides of the driving plate 1102 are respectively in contact with the fixed plate 6 and the top plate 9. When connecting the wires, the hemispherical block 1103 is pressed downward, driving the slide bar 1101 and the driving plate 1102 to move downward together. The driving plate 1102 moves away from the fixed plate 6 and drives the top plate 9 to move downward in a straight line until the hemispherical block 1103 is completely located in the movable groove 5, and the hemispherical block 1103 is locked by the locking piece 14. Conversely, the hemispherical block 1103 is unlocked by the locking piece 14, and the driving plate 1102, the slide bar 1101 and the hemispherical block 1103 will all move upward to the initial position due to elastic potential energy.

[0035] like Figure 5 As shown, in some embodiments, the transmission member 13 includes a spiral groove 1301 opened in the fixed cylinder 4 and connected to the movable groove 5, the spiral groove 1301 is opened in the vertical direction, and a convex block 1302 that slidably cooperates with the spiral groove 1301 is provided on the top plate 9, and the convex block 1302 is horizontally oriented and fixed on the top plate 9;

[0036] Referring to the above, when the top plate 9 moves linearly in the vertical direction, the protrusion 1302 slides in the spiral groove 1301, and the spiral groove 1301 guides and limits the protrusion 1302, so that the top plate 9 rotates while moving linearly.

[0037] like Figure 5 As shown, in some embodiments, the elastic member 12 includes a ring plate 1201 movably mounted on the column 8, the ring plate 1201 is in a horizontal direction, and a compression spring 1202 mounted on the column 8 is provided between the ring plate 1201 and the connecting plate 7, the compression spring 1202 is in a vertical direction and its two ends are respectively fixedly connected to the ring plate 1201 and the connecting plate 7;

[0038] Referring to the above, in the initial state, the ring plate 1201 is away from the connecting plate 7 and is in contact with the top plate 9, and the extrusion spring 1202 is in a natural state. When the top plate 9 moves downward, the ring plate 1201 is forced to move downward together to be close to the connecting plate 7, forcing the extrusion spring 1202 to be squeezed. Conversely, when the driving member 11 is unlocked by the locking member 14, the extrusion spring 1202 will be reset to the natural state due to being squeezed, and the ring plate 1201 moves upward to be away from the connecting plate 7.

[0039] like Figure 6 As shown, in some embodiments, the locking member 14 includes a fixed block 1401 arranged on the fixed cylinder 4, the fixed block 1401 is fixedly arranged on the fixed cylinder 4, a cross bar 1402 is slidably arranged on the fixed block 1401, the cross bar 1402 is in a horizontal direction and slides in the horizontal direction, and a limit block 1403 and a wedge block 1404 are respectively arranged at both ends of the cross bar 1402, the limit block 1403, the cross bar 1402 and the wedge block 1404 are fixedly connected in sequence and form a step-like structure, the wedge block 1404 and the hemispherical block 1103 are in contact and overlapped, and a return spring 1405 sleeved on the cross bar 1402 is arranged between the wedge block 1404 and the fixed block 1401, and the return spring 1405 is in a horizontal direction and its two ends are respectively fixedly connected to the wedge block 1404 and the fixed block 1401;

[0040] Referring to the above, in the initial state, the return spring 1405 is in a natural state, the limit block 1403 contacts the fixed block 1401, and the wedge block 1404 is away from the fixed block 1401. When the hemispherical block 1103 moves downward to be completely located in the movable groove 5, the hemispherical surface of the hemispherical block 1103 contacts and overlaps the inclined surface of the wedge block 1404. Through the transition effect of the inclined surface, the wedge block 1404, the cross bar 1402 and the limit block 1403 are forced to move horizontally together, forcing the return spring 1405 to be squeezed, and then the return spring 1405 is reset to the natural state, and the wedge block 1404, the cross bar 1402 and the limit block 1403 all move to the initial state. At the initial position, the plane of the wedge block 1404 contacts and overlaps with the plane of the hemispherical block 1103. At this time, due to the obstruction of the wedge block 1404, the hemispherical block 1103 cannot withdraw from the movable groove 5, so as to lock the hemispherical block 1103. On the contrary, the wedge block 1404, the cross bar 1402 and the limit block 1403 move together in the horizontal direction, forcing the return spring 1405 to be squeezed until the wedge block 1404 is away from the hemispherical block 1103. At this time, due to the loss of the obstruction of the wedge block 1404, the hemispherical block 1103 can withdraw from the movable groove 5, and finally the return spring 1405 is reset to the natural state, so that the hemispherical block 1103 can be unlocked.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A variable frequency controller for a dust removal fan, comprising a PLC main body (1), wherein the PLC main body (1) is provided with a plurality of evenly distributed wiring ports (2), It is characterized in that The wiring port (2) is provided with a receiving groove (3) and a fixing tube (4); the fixing tube (4) is provided with a movable groove (5) connected with the receiving groove (3); the movable groove (5) is provided with a fixing plate (6) and a connecting plate (7) distributed up and down; a column (8) is slidably provided on the connecting plate (7); a top plate (9) and a bottom plate (10) are respectively provided at both ends of the column (8); the bottom plate (10) can be completely received in the receiving groove (3); the fixing plate (6) A driving member (11) is provided on the upper slide, an elastic member (12) is provided between the top plate (9) and the connecting plate (7), a transmission member (13) is provided between the top plate (9) and the movable groove (5), the driving member (11) drives the top plate (9) to move linearly, and the transmission member (13) realizes the top plate (9) to rotate while moving linearly, and a locking member (14) is provided on the fixed cylinder (4), and the driving member (11) is locked or unlocked by the locking member (14); The driving member (11) comprises a slide bar (1101) slidably arranged on a fixed plate (6), a driving plate (1102) and a hemispherical block (1103) are respectively arranged at two ends of the slide bar (1101), the driving plate (1102) and the top plate (9) are in contact and overlapped connection, and the hemispherical block (1103) is locked or unlocked by a locking member (14); The transmission member (13) comprises a spiral groove (1301) provided in the fixed cylinder (4) and connected to the movable groove (5); the top plate (9) is provided with a protrusion (1302) which is slidably matched with the spiral groove (1301); The elastic member (12) comprises a ring plate (1201) movably mounted on the column rod (8), and a compression spring (1202) mounted on the column rod (8) is arranged between the ring plate (1201) and the connecting plate (7); The locking member (14) comprises a fixed block (1401) arranged on the fixed cylinder (4); a cross bar (1402) is slidably arranged on the fixed block (1401); a limit block (1403) and a wedge block (1404) are respectively arranged at two ends of the cross bar (1402); the wedge block (1404) and the hemispherical block (1103) are in contact and overlap connection; a return spring (1405) sleeved on the cross bar (1402) is arranged between the wedge block (1404) and the fixed block (1401).

2. A dust removal fan frequency conversion controller according to claim 1, It is characterized in that The PLC body (1) is hinged with two symmetrically distributed dust covers (15).

3. A dust removal fan frequency conversion controller according to claim 1, It is characterized in that A protective pad (16) is provided on the side of the bottom plate (10) away from the column (8), and the material of the protective pad (16) is EPDM rubber.

4. A dust removal fan frequency conversion controller according to claim 1, It is characterized in that The entrance of the wiring port (2) is structured in an outwardly expanding cone shape.

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