An easily adjustable exhaust head

Abstract

This utility model relates to the technical field of coating grinding production lines, specifically to an easily adjustable exhaust head, comprising an exhaust pipe, a telescopic flexible hose that can extend or retract longitudinally at the bottom of the exhaust pipe, a fixed base at the bottom of the telescopic flexible hose to prevent backflow, a rotatable sleeve at the bottom of the fixed base, and an adjustable shroud at the bottom of the sleeve. A first servo motor is fixed to one side of the fixed base, and a rotatable first drive gear is mounted on the output end of the first servo motor. The top end of the sleeve is rotatably mounted on the fixed base, and a toothed belt that meshes with the first drive gear is provided on the outer wall of the top end of the sleeve. This application enables the sleeve to drive the shroud for horizontal adjustment, solving the problem that the adjustable exhaust head can only be adjusted along its longitudinal horizontal cross-section.

Description

Technical Field

[0001] This utility model relates to the field of exhaust head technology, specifically to an easily adjustable exhaust head. Background Technology

[0002] A paint grinding production line is a highly automated process specifically designed for the fine grinding of paint raw materials to achieve an ideal particle size distribution. This production line typically consists of key components such as a raw material metering system, a pre-dispersion device, a grinder, paint mixing equipment, and an air purification system. The air purification system usually comprises filters, exhaust fans, exhaust ducts, and exhaust nozzles. The exhaust nozzles are located on the production equipment and connected to the exhaust ducts, which are installed on the ceiling of the plant. During operation, the exhaust fans effectively extract volatile gases or dust generated near the production equipment through the exhaust nozzles, and then the volatile solvents are centrally transported through the exhaust ducts to the filters for efficient purification.

[0003] Chinese patent CN215613970U discloses an adjustable exhaust head, comprising an outer tube, an inner tube, a bellows-style duct, a cover plate, and a connecting seat. The first end of the outer tube is connected to and communicates with the exhaust duct of an air purification system; one end of the inner tube is rotatably connected to and communicates with the second end of the outer tube, and the outer wall of the inner tube is slidably connected to the inner wall of the outer tube; the bellows-style duct is connected to and communicates with the end of the inner tube furthest from the outer tube; the cover plate is connected to and communicates with the end of the bellows-style duct furthest from the inner tube; the connecting seat is connected to the cover plate; one end of a lifting device is connected to the outer wall of the inner tube, and the other end of the lifting device is rotatably connected to the connecting seat. This adjustable exhaust head can be adjusted according to the position of the production equipment, improving the recovery efficiency of volatile gases or dust generated by the production equipment.

[0004] The adjustable exhaust head described in the aforementioned patent document uses lifting devices on both sides of the outer tube to adjust the height of the shroud. However, in actual use, the exhaust head's efficiency in recovering volatile gases or dust can only be improved by adjusting the distance between the shroud and the paint grinding equipment. When the paint grinding equipment deviates from the shroud, the exhaust head's recovery efficiency decreases. Therefore, an easily adjustable exhaust head is proposed. Utility Model Content

[0005] To address the aforementioned problems, an easily adjustable exhaust head is provided. A first servo motor drives a first drive gear to rotate, which in turn drives a sleeve to rotate around the central axis of the fixed base via a toothed belt. This allows the sleeve to rotate synchronously with the shroud, enabling the sleeve to adjust the shroud horizontally. This solves the problem that adjustable exhaust heads can only be adjusted along their longitudinal horizontal plane.

[0006] To address the problems of the prior art, this application provides an easily adjustable exhaust head, including an exhaust pipe, a telescopic hose that can extend or retract longitudinally at the bottom of the exhaust pipe, a fixed base at the bottom of the telescopic hose to prevent backflow, a rotatable sleeve at the bottom of the fixed base, and an adjustable shroud at the bottom of the sleeve. A first servo motor is fixed to one side of the fixed base, and a rotatable first drive gear is installed at the output end of the first servo motor.

[0007] The top end of the sleeve is rotatably mounted on the fixed base, and a toothed belt capable of meshing with the first driving gear is provided on the outer wall of the top end of the sleeve.

[0008] As one technical solution of this application, the bottom end of the fixed base is provided with an annular limiting slide rail for limiting the position;

[0009] The inner wall of the top of the sleeve is provided with an installation groove that can be fitted onto the outside of the annular limiting slide rail, and the annular limiting slide rail slides in a sliding fit with the installation groove.

[0010] As one technical solution of this application, the sleeve is provided with mounting grooves on both sides near the bottom end;

[0011] The fairing output end has vertically fixed uprights on both sides. The uprights have a mounting post on the side near the top that can be installed inside the mounting hole. The mounting post is rotatably engaged with the mounting hole.

[0012] As one technical solution of this application, the top of the fairing is provided with a toothed groove;

[0013] The sleeve has a horizontally rotatable rotating shaft installed near the bottom end of the sleeve, with both ends of the rotating shaft extending out of the interior of the sleeve.

[0014] Both ends of the rotating shaft are fixed with driven gears that can mesh with tooth grooves.

[0015] As one technical solution of this application, a second servo motor is fixed to the outside of the sleeve, and a second driving gear is installed at the output end of the second servo motor, which can mesh with a driven gear installed at one end of the rotating shaft.

[0016] As one technical solution of this application, a flexible bellows that can be bent is installed inside the output end of the fairing, and the top end of the flexible bellows is fixed to the inner wall of the bottom end of the sleeve.

[0017] As one technical solution of this application, a flange is provided at the bottom of the telescopic hose;

[0018] The bottom of the air extraction pipe is longitudinally equipped with a telescopic cylinder that can drive the telescopic hose to extend or retract longitudinally. The top of the telescopic cylinder is fixed to the bottom of the air extraction pipe, and the output end of the telescopic cylinder can be fixedly connected to a flange.

[0019] As one technical solution of this application, a fixing rod is horizontally installed inside the fixing base, and a check plate that can rotate around its central axis is installed on the fixing rod; a spring for pushing the check plate to reset is also installed at the center of the fixing rod.

[0020] The advantages of this utility model compared to the prior art are:

[0021] 1. This application utilizes a first servo motor to drive a first drive gear to rotate, so that the rotation of the first drive gear can drive the sleeve to rotate around the central axis of the fixed base via a toothed belt, so that the sleeve can drive the shroud to rotate synchronously while rotating. This enables the sleeve to drive the shroud to be adjusted in the horizontal direction. It solves the problem that the adjustable exhaust head can only be adjusted along its longitudinal horizontal sectional plane.

[0022] 2. This application utilizes a second servo motor to drive the second drive gear at its output end to rotate, enabling the second drive gear to drive the driven gear meshing with it to rotate synchronously. Simultaneously, the driven gear drives the rotating shaft to rotate, achieving the purpose of the rotating shaft driving the driven gear at the other end to rotate synchronously. While the driven gear rotates, it can drive the upright rod through its meshing tooth grooves, causing the upright rod to rotate along the central axis of the mounting hole via the mounting post, thereby achieving the angle adjustment of the fairing. Attached Figure Description

[0023] Figure 1 It is a 3D diagram of an easily adjustable exhaust head.

[0024] Figure 2 This is a top view of an easily adjustable exhaust head.

[0025] Figure 3 yes Figure 2 Sectional view at point AA.

[0026] Figure 4 This is a three-dimensional view of the fairing in an easily adjustable exhaust head.

[0027] Figure 5 This is an exploded view of the sleeve in an easily adjustable exhaust head.

[0028] Figure 6 This is a three-dimensional diagram of a sleeve in an easily adjustable exhaust head.

[0029] Figure 7 This is a schematic diagram of the internal structure of a fixed base in an easily adjustable exhaust head.

[0030] Figure 8 yes Figure 3 A magnified structural diagram at point B in the diagram.

[0031] The following are the labels in the diagram: 1. Air extraction pipe; 11. Telescopic cylinder; 2. Telescopic hose; 21. Flange; 3. Fixing seat; 31. Annular limit slide rail; 32. Fixing rod; 33. Check plate; 34. Spring; 4. First servo motor; 41. First drive gear; 5. Sleeve; 51. Toothed belt; 52. Rotating shaft; 53. Driven gear; 54. Second servo motor; 55. Second drive gear; 56. Mounting hole; 57. Mounting groove; 7. Fairing; 71. Upright pole; 711. Mounting column; 712. Toothed groove; 8. Flexible corrugated pipe. Detailed Implementation

[0032] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0033] See Figures 1-8 As shown, an adjustable exhaust head includes an exhaust pipe 1, a telescopic hose 2 that can extend or retract longitudinally at the bottom of the exhaust pipe 1, a fixed base 3 at the bottom of the telescopic hose 2 to prevent backflow, a rotatable sleeve 5 at the bottom of the fixed base 3, and an adjustable shroud 7 at the bottom of the sleeve 5. A first servo motor 4 is fixed on one side of the fixed base 3, and a rotatable first drive gear 41 is installed at the output end of the first servo motor 4.

[0034] The top end of the sleeve 5 is rotatably mounted on the fixed base 3, and a toothed belt 51 capable of meshing with the first drive gear 41 is provided on the outer wall of the top end of the sleeve 5.

[0035] When the first servo motor 4 drives the first drive gear 41 to rotate, the first drive gear 41 can drive the sleeve 5 to rotate around the central axis of the fixed base 3 through the toothed belt 51, so that the sleeve 5 can drive the shroud 7 to rotate synchronously while rotating. This enables the sleeve 5 to drive the shroud 7 to be adjusted in the horizontal direction. This solves the problem that the adjustable exhaust head can only be adjusted along its longitudinal horizontal sectional plane.

[0036] See Figure 5 As shown, the bottom end of the fixed base 3 is provided with an annular limiting slide rail 31 for limiting the position;

[0037] The inner wall of the top end of the sleeve 5 is provided with an installation groove 57 that can be fitted onto the outside of the annular limiting slide rail 31, and the annular limiting slide rail 31 and the installation groove 57 are slidably engaged.

[0038] To ensure the stability of the sleeve 5, an annular limiting slide rail 31 is provided at the bottom of the fixed base 3. The sleeve 5 is then installed on the outside of the annular limiting slide rail 31 through the mounting groove 57. When the sleeve 5 rotates, it can rotate along the central axis of the annular limiting slide rail 31 through the mounting groove 57, thus ensuring that the sleeve 5 remains in a stable state.

[0039] See Figure 5 , Figure 6 and Figure 8 As shown, mounting holes 56 are provided on both sides of the sleeve 5 near the bottom end;

[0040] The fairing 7 has vertically fixed uprights 71 on both sides of the output end. The uprights 71 have a mounting post 711 on the side near the top that can be installed inside the mounting hole 56. The mounting post 711 is rotatably engaged with the mounting hole 56.

[0041] To prevent the fairing 7 from falling off, two vertical poles 71 are symmetrically arranged longitudinally on both sides of the output end of the fairing 7. Then, mounting posts 711 are horizontally fixed on the two corresponding sides of the two vertical poles 71 near the top. The mounting posts 711 are then installed inside the mounting holes 56, which effectively prevents the fairing 7 from falling off.

[0042] See Figure 5 , Figure 6 and Figure 8 As shown, the top of the fairing 7 is provided with a toothed groove 712; a rotating shaft 52 is horizontally arranged inside the sleeve 5 near the bottom end, and both ends of the rotating shaft 52 can extend out of the inside of the sleeve 5; driven gears 53 that can mesh with the toothed groove 712 are fixed at both ends of the rotating shaft 52.

[0043] While the driven gear 53 rotates, the driven gear 53 can drive the upright 71 through the meshing tooth groove 712, so that the upright 71 rotates along the central axis of the mounting hole 56 through the mounting column 711, thereby realizing the angle adjustment of the fairing 7.

[0044] See Figure 6 As shown, a second servo motor 54 is fixed to the outside of the sleeve 5, and a second driving gear 55 is installed at the output end of the second servo motor 54, which can mesh with the driven gear 53 installed at one end of the rotating shaft 52.

[0045] When the second servo motor 54 drives the second drive gear 55 at the output end to rotate, the second drive gear 55 can drive the driven gear 53 meshing with it to rotate synchronously. At the same time, the driven gear 53 will drive the rotating shaft 52 to rotate, thus achieving the purpose of the rotating shaft 52 driving the driven gear 53 at the other end to rotate synchronously.

[0046] See Figure 1 , Figure 4, Figure 5 and Figure 8 As shown, a flexible bellows 8 that can be bent is installed inside the output end of the fairing 7, and the top end of the flexible bellows 8 is fixed to the inner wall of the bottom end of the sleeve 5.

[0047] By fixing the bottom end of the flexible bellows 8 to the inside of the output end of the shroud 7, and then fixing the top end of the flexible bellows 8 to the inner wall of the bottom end of the sleeve 5, the flexible bellows 8 can connect the shroud 7 and the sleeve 5. This allows dust to enter the interior of the shroud 7 and then enter the interior of the sleeve 5 through the flexible bellows 8.

[0048] See Figure 1 As shown, a flange 21 is provided at the bottom of the telescopic hose 2;

[0049] The bottom of the air extraction pipe 1 is longitudinally equipped with a telescopic cylinder 11 that can drive the telescopic hose 2 to extend or retract longitudinally. The top of the telescopic cylinder 11 is fixed to the bottom of the air extraction pipe 1, and the output end of the telescopic cylinder 11 can be fixedly connected to the flange 21.

[0050] When the output end of the telescopic cylinder 11 extends, the output end of the telescopic cylinder 11 can drive the bottom end of the telescopic hose 2 to move downward through the flange 21. At the same time, the telescopic hose 2 drives the sleeve 5 at the bottom end to move downward synchronously, thereby causing the sleeve 5 to drive the fairing 7 to move downward synchronously, thus realizing the adjustment of the height of the fairing 7.

[0051] See Figure 7 As shown, a fixing rod 32 is horizontally installed inside the fixing base 3, and a check plate 33 that can rotate around its central axis is installed on the fixing rod 32; a spring 34 for pushing the check plate 33 to reset is also installed at the center of the fixing rod 32.

[0052] When the paint grinding production line starts, the air inside the extraction pipe 1 flows rapidly, creating a negative pressure environment. When the extraction pipe 1 is under negative pressure, the check plate 33 inside the fixed seat 3 rotates around the central axis of the fixed rod 32. At this time, the fixed seat 3 is in the open state, allowing external air to enter the extraction pipe 1 through the rectifier 7, the flexible corrugated pipe 8, the sleeve 5, and then through the fixed seat 3 and the telescopic hose 2. This allows the external air to carry volatile gases or dust particles floating in the air into the extraction pipe 1, which are then discharged through the output end of the extraction pipe 1.

[0053] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An adjustable exhaust head, comprising an exhaust pipe (1), a telescopic flexible hose (2) disposed at the bottom of the exhaust pipe (1) and capable of longitudinally extending or retracting, a fixed base (3) disposed at the bottom of the telescopic flexible hose (2) for preventing backflow, a rotatable sleeve (5) disposed at the bottom of the fixed base (3), and an adjustable shroud (7) disposed at the bottom of the sleeve (5), characterized in that, A first servo motor (4) is fixed on one side of the fixed base (3), and a first drive gear (41) capable of rotation is installed at the output end of the first servo motor (4). The top end of the sleeve (5) is rotatably mounted on the fixed base (3), and a toothed belt (51) capable of meshing with the first drive gear (41) is provided on the outer wall of the top end of the sleeve (5).

2. The adjustable exhaust head according to claim 1, characterized in that, The bottom end of the fixed base (3) is provided with an annular limiting slide rail (31) for limiting the position; The inner wall of the top end of the sleeve (5) is provided with an installation groove (57) that can be fitted onto the outside of the annular limiting slide rail (31), and the annular limiting slide rail (31) and the installation groove (57) are slidably engaged.

3. The adjustable exhaust head according to claim 1, characterized in that, The sleeve (5) has mounting grooves (57) on both sides near the bottom end; The output end of the fairing (7) is longitudinally fixed with uprights (71) on both sides. The uprights (71) are provided with a mounting post (711) on the side near the top, which can be installed inside the mounting hole (56). The mounting post (711) is rotatably engaged with the mounting hole (56).

4. The easily adjustable exhaust head according to claim 1, characterized in that, The top of the fairing (7) is provided with a toothed groove (712); The sleeve (5) has a rotatable rotating shaft (52) horizontally arranged inside near the bottom end, and both ends of the rotating shaft (52) can extend out of the interior of the sleeve (5). Both ends of the rotating shaft (52) are fixed with driven gears (53) that can mesh with the tooth groove (712).

5. The adjustable exhaust head according to claim 4, characterized in that, The sleeve (5) is fixed to the outside of a second servo motor (54), and the output end of the second servo motor (54) is equipped with a second drive gear (55) that can mesh with a driven gear (53) installed at one end of the rotating shaft (52).

6. The easily adjustable exhaust head according to claim 1, characterized in that, The output end of the fairing (7) is equipped with a flexible bellows (8) that can be bent, and the top end of the flexible bellows (8) is fixed to the inner wall of the bottom end of the sleeve (5).

7. The adjustable exhaust head according to claim 1, characterized in that, The bottom of the telescopic hose (2) is provided with a flange (21); The bottom of the air extraction pipe (1) is longitudinally provided with a telescopic cylinder (11) that can drive the telescopic hose (2) to extend or retract longitudinally. The top of the telescopic cylinder (11) is fixed to the bottom of the air extraction pipe (1), and the output end of the telescopic cylinder (11) can be fixedly connected to the flange (21).

8. The adjustable exhaust head according to claim 1, characterized in that, A fixing rod (32) is horizontally installed inside the fixing base (3), and a check plate (33) capable of rotating around its central axis is installed on the fixing rod (32); a spring (34) for pushing the check plate (33) to reset is also installed at the center of the fixing rod (32).

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