A dust extraction hood

Abstract

This invention relates to a vacuum cleaner hood, comprising: a connecting pipe, a first roller, a second roller, a first blind, a second blind, a first connecting rod, a second connecting rod, and a drive mechanism. The first and second rollers are located on either side of the lower end of the connecting pipe, facing each other. The drive mechanism is located below the first and second rollers. One end of the first blind is connected to the first roller, and the other end is connected to one end of the drive mechanism via the first connecting rod; one end of the second blind is connected to the second roller, and the other end is connected to the other end of the drive mechanism via the second connecting rod; the two ends of the drive mechanism can move laterally towards each other or away from each other. This vacuum cleaner hood, through the drive mechanism, can change the lateral position of the lower ends of the first and second blinds, thereby adjusting the size of the vacuum cleaner hood opening and improving the stability of the vacuuming effect.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, and in particular to a dust collection hood. Background Technology

[0002] Dust hoods are used in dust collection systems to capture dust and fumes. Currently, the most commonly used dust hoods are fixed, umbrella-shaped ones. Existing dust hoods have the following drawbacks: the opening size is fixed and cannot be adjusted according to the size of the dust source, leading to unstable dust collection performance. Changes in operating conditions cause variations in the range of dust generation points on the conveyor belt; for example, dust generation may increase from a certain length to a longer range, exceeding the range of the fixed hood opening. The excess dust cannot be collected, resulting in dust pollution in the workshop. Summary of the Invention

[0003] This invention addresses the technical problem of difficulty in adjusting the opening of existing vacuum hoods by providing a vacuum hood.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] A vacuum cleaner hood includes: a connecting pipe, a first roller, a second roller, a first shutter, a second shutter, a first link, a second link, and a drive mechanism;

[0006] The first and second reels are disposed on both sides of the lower end of the connector, with the first and second reels facing each other.

[0007] The drive mechanism is located below the first and second drums;

[0008] One end of the first roller blind is connected to the first roller, and the other end of the first roller blind is connected to one end of the drive mechanism through the first connecting rod; one end of the second roller blind is connected to the second roller, and the other end of the second roller blind is connected to the other end of the drive mechanism through the second connecting rod; the two ends of the drive mechanism can move laterally towards each other or away from each other.

[0009] Furthermore, the drive mechanism includes: a dual-axis motor, a first coupling, a second coupling, a first lead screw, a second lead screw, a first ball spline, a second ball spline, and a linear guide rail;

[0010] The two output terminals of the dual-axis motor are respectively located on the left and right sides;

[0011] One output end of the dual-axis motor is connected to one end of the first lead screw through the first coupling. The first lead screw passes through the first ball spline and engages with the first ball spline. The first connecting rod is connected to the first ball spline.

[0012] The other output end of the dual-axis motor is connected to one end of the second lead screw through the second coupling. The second lead screw passes through the second ball spline and engages with the second ball spline. The second connecting rod is connected to the second ball spline.

[0013] The first lead screw and the second lead screw are arranged on the same straight line; the linear guide is arranged on one side of the first lead screw and the second lead screw, and the linear guide is arranged parallel to the first lead screw and the second lead screw; the first ball spline is provided with a first groove, the second ball spline is provided with a second groove, and the first groove and the second groove are fitted into the linear guide.

[0014] Furthermore, both the first and second roller blinds are canvas roller blinds.

[0015] Furthermore, it also includes a butterfly valve; the butterfly valve is disposed on the connecting pipe.

[0016] The dust cover provided by this invention has at least the following beneficial effects or advantages:

[0017] The dust hood provided by this invention comprises a first roller and a second roller disposed on both sides of the lower end of a connecting pipe, with the first roller and the second roller facing each other. A drive mechanism is disposed below the first roller and the second roller. One end of the first roller blind is connected to the first roller, and the other end of the first roller blind is connected to one end of the drive mechanism via a first connecting rod; one end of the second roller blind is connected to the second roller, and the other end of the second roller blind is connected to the other end of the drive mechanism via a second connecting rod; the two ends of the drive mechanism can move laterally towards each other or away from each other. This dust hood, through the drive mechanism, can change the lateral position of the lower ends of the first and second roller blinds, thereby adjusting the size of the dust hood opening and improving the stability of the dust collection effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dust hood in the open state provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the vacuum cleaner hood in its retracted state, provided in an embodiment of the present invention.

[0020] Figure 3 This is a side view of a dust hood provided in an embodiment of the present invention.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1-Connecting pipe, 2-First roller drum, 3-Second roller drum, 4-First roller blind, 5-Second roller blind, 6-First connecting rod, 7-Second connecting rod, 8-Dual shaft motor, 9-First coupling, 10-Second coupling, 11-First lead screw, 12-Second lead screw, 13-First ball spline, 14-Second ball spline, 15-Butterfly valve, 16-Side wall, 17-Linear guide rail. Detailed Implementation

[0023] This invention addresses the technical problem of difficulty in adjusting the opening of existing vacuum hoods by providing a vacuum hood.

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides a dust collection hood, such as... Figures 1-3 It mainly includes: a connecting pipe 1, a first roller 2, a second roller 3, a first roller blind 4, a second roller blind 5, a first connecting rod 6, a second connecting rod 7, and a drive mechanism. Among them:

[0026] The first roller 2 and the second roller 3 are located on both sides of the lower end of the connecting pipe 1. The first roller 2 and the second roller 3 are arranged facing each other. The first roller 2 and the second roller 3 have the function of automatically pulling back the roller blind.

[0027] The drive mechanism is located below the first roller 2 and the second roller 3. The first roller blind 4 and the second roller blind 5 are located within the side wall 16; one end of the first roller blind 4 is connected to the first roller 2, and the other end of the first roller blind 4 is connected to one end of the drive mechanism via the first connecting rod 6; one end of the second roller blind 5 is connected to the second roller 3, and the other end of the second roller blind 5 is connected to the other end of the drive mechanism via the second connecting rod 7. The first roller blind 4 and the second roller blind 5 are made of a repeatedly bendable material; for example, in this embodiment, both the first roller blind 4 and the second roller blind 5 are canvas roller blinds. The two ends of the drive mechanism can move laterally towards each other or away from each other; the drive mechanism is used to drive the first connecting rod 6 and the second connecting rod 7 to move laterally towards each other or away from each other. The first connecting rod 6 causes the lower end of the first roller blind 4 to change its position laterally, and the second connecting rod 7 causes the lower end of the second roller blind 5 to change its position laterally, thereby adjusting the size of the vacuum hood opening.

[0028] Specifically, such as Figures 1-3The drive mechanism includes: a dual-axis motor 8, a first coupling 9, a second coupling 10, a first lead screw 11, a second lead screw 12, a first ball spline 13, a second ball spline 14, and a linear guide rail 17. The two output ends of the dual-axis motor 8 are respectively located on the left and right sides. One output end of the dual-axis motor 8 is connected to one end of the first lead screw 11 via the first coupling 9. The first lead screw 11 passes through and engages with the first ball spline 13, and a first connecting rod 6 is connected to the first ball spline 13. The other output end of the dual-axis motor 8 is connected to one end of the second lead screw 12 via the second coupling 10. The second lead screw 12 passes through and engages with the second ball spline 14, and a second connecting rod 7 is connected to the second ball spline 14. The first lead screw 11 and the second lead screw 12 are arranged on the same straight line; a linear guide rail is arranged on one side of the first lead screw 11 and the second lead screw 12, and the linear guide rail 17 is arranged parallel to the first lead screw 11 and the second lead screw 12; a first sliding groove is formed on the first ball spline 13, and a second sliding groove is formed on the second ball spline 14, the first and second sliding grooves being fitted onto the linear guide rail 17. Of course, the dual-axis motor 8 in the drive mechanism can be replaced by two separately set motors or cylinders, etc., as long as they can achieve lateral movement towards or away from each other.

[0029] To achieve on / off control of the flue gas, a preferred embodiment further includes: a butterfly valve 15; the butterfly valve 15 is installed on the pipe 1; when the butterfly valve 15 is open, the flue gas can enter the dust collection hood; when the butterfly valve 15 is closed, the flue gas does not enter the dust collection hood.

[0030] like Figures 1-3The working process of the vacuum hood provided in this embodiment of the invention is as follows: When it is necessary to enlarge the opening of the vacuum hood, the dual-axis motor 8 is turned on and the two output ends of the dual-axis motor 8 are rotated in the forward direction. The two output ends of the dual-axis motor 8 drive the first lead screw 11 and the second lead screw 12 to rotate synchronously in the forward direction. Since the first ball spline 13 and the second ball spline 14 are limited to the linear guide rail 17, the first ball spline 13 and the second ball spline 14 move synchronously outward in the lateral direction during the forward rotation of the first lead screw 11 and the second lead screw 12. The first ball spline 13 drives the first connecting rod 6 to move synchronously outward in the lateral direction, and the second ball spline 14 drives the second connecting rod 7 to move synchronously outward in the lateral direction. The first connecting rod 6 drives the lower end of the first roller shutter 4 to move outward in the lateral direction, and the second connecting rod 7 drives the lower end of the second roller shutter 5 to move outward in the lateral direction, thereby realizing the enlargement of the opening of the vacuum hood. When the opening of the vacuum hood needs to be reduced, the dual-axis motor 8 is turned on and its two output ends rotate in opposite directions. The two output ends of the dual-axis motor 8 drive the first lead screw 11 and the second lead screw 12 to rotate synchronously in opposite directions. Since the first ball spline 13 and the second ball spline 14 are confined on the linear guide rail 17, the first ball spline 13 and the second ball spline 14 move synchronously inward in the horizontal direction during the reverse rotation of the first lead screw 11 and the second lead screw 12. The first ball spline 13 drives the first connecting rod 6 to move synchronously inward in the horizontal direction, and the second ball spline 14 drives the second connecting rod 7 to move synchronously inward in the horizontal direction. The first connecting rod 6 drives the lower end of the first roller shutter 4 to move inward in the horizontal direction, and the second connecting rod 7 drives the lower end of the second roller shutter 5 to move inward in the horizontal direction, thereby reducing the opening of the vacuum hood.

[0031] In the description of this invention, it should be noted that the terms used in the various embodiments, such as "upper," "lower," "front," "rear," "left," and "right," which indicate orientation, are only used to simplify the description of the positional relationships based on the accompanying drawings and do not mean that the components and devices referred to must be operated in accordance with the specific orientations and defined operations, methods, and structures in the specification. Such directional terms do not constitute a limitation of this invention.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0033] The dust cover provided in this embodiment of the invention has at least the following beneficial effects or advantages:

[0034] The dust hood provided in this embodiment of the invention has a first roller and a second roller disposed on both sides of the lower end of the connecting pipe, with the first roller and the second roller facing each other. A drive mechanism is disposed below the first roller and the second roller. One end of the first roller blind is connected to the first roller, and the other end of the first roller blind is connected to one end of the drive mechanism via a first connecting rod; one end of the second roller blind is connected to the second roller, and the other end of the second roller blind is connected to the other end of the drive mechanism via a second connecting rod; the two ends of the drive mechanism can move laterally towards each other or away from each other. This dust hood, through the drive mechanism, can change the lateral position of the lower ends of the first and second roller blinds, thereby adjusting the size of the dust hood opening and improving the stability of the dust collection effect.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vacuum cleaner hood, characterized in that: include: Connector, first roller, second roller, first roller blind, second roller blind, first connecting rod, second connecting rod and drive mechanism; The first roll and the second roll are disposed on both sides of the lower end of the connector, and the first roll and the second roll are disposed facing each other. The drive mechanism is located below the first and second drums; One end of the first roller blind is connected to the first roller, and the other end of the first roller blind is connected to one end of the drive mechanism through the first connecting rod; one end of the second roller blind is connected to the second roller, and the other end of the second roller blind is connected to the other end of the drive mechanism through the second connecting rod; the two ends of the drive mechanism can move laterally towards each other or in opposite directions. The drive mechanism includes: a dual-axis motor, a first coupling, a second coupling, a first lead screw, a second lead screw, a first ball spline, a second ball spline, and a linear guide rail; The two output terminals of the dual-axis motor are respectively located on the left and right sides; One output end of the dual-axis motor is connected to one end of the first lead screw through the first coupling. The first lead screw passes through the first ball spline and engages with the first ball spline. The first connecting rod is connected to the first ball spline. The other output end of the dual-axis motor is connected to one end of the second lead screw through the second coupling. The second lead screw passes through the second ball spline and engages with the second ball spline. The second connecting rod is connected to the second ball spline. The first lead screw and the second lead screw are arranged on the same straight line; the linear guide rail is arranged on one side of the first lead screw and the second lead screw, and the linear guide rail is arranged parallel to the first lead screw and the second lead screw; the first ball spline is provided with a first groove, the second ball spline is provided with a second groove, and the first groove and the second groove are on the linear guide rail; Both the first and second roller blinds are canvas roller blinds.

2. The dust cover according to claim 1, characterized in that: Also includes: Butterfly valve; the butterfly valve is installed on the connecting pipe.

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