Switching device for switching single-channel and double-channel dust collection of grinding machine

Abstract

The utility model relates to the technical field of wall surface polishing, in particular to a switching device for switching single-channel and double-channel dust collection of a polishing machine, which comprises a shell, a main pipeline and two branch pipelines which are communicated with each other are formed on the shell, a mounting position is formed at the intersection of the main pipeline and the two branch pipelines, and a cylindrical mounting sleeve is arranged in the center of the mounting position. A switching assembly is rotatably mounted in the mounting sleeve, the switching assembly comprises a rotating shaft inserted into the mounting sleeve and a wind shield arranged on the outer wall of the rotating shaft, the wind shield is matched with a baffle assembly arranged at an inlet of the branch pipeline so as to isolate the main pipeline from one branch pipeline, and a placement vacancy capable of placing the wind shield is formed between the two branch pipelines. The two branch pipelines, the baffle assembly and the switching assembly are arranged, the baffle can be controlled by rotating the switching assembly to rotate between the branch pipelines and the placement vacancies, and therefore switching of the circulation states of the branch pipelines is achieved, and switching operation is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of wall sanding technology, specifically to a switching device for switching between single and dual-channel dust collection in a sander. Background Technology

[0002] A wall sander is a tool that replaces traditional sandpaper used by workers to sand walls and objects. During the sanding process, dust and debris are usually generated, so wall sanders also need a vacuuming function. This function uses a fan to create negative pressure to remove dust and debris. Currently available vacuum cleaners typically only have one suction pipe. When the sanding power is high, more dust is generated, causing some dust to remain suspended in the air, resulting in poor suction. Over time, this affects the performance and lifespan of the wall sander, and also impacts the health of the operator. For example, patent CN222285369U discloses an air duct conversion structure and vacuum cleaner for switching between suction and integrated air ducts, but it still doesn't solve the problem of attracting more dust. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a switching device for switching between single and dual-channel dust collection in a sander, which can adjust the dust collection volume of the wall sander according to the amount of dust generated during sanding.

[0004] To solve the above problems, the present invention adopts the following solution:

[0005] A switching device for switching between single and dual-channel dust collection in a grinding machine includes a housing. The housing forms a main pipe and two branch pipes that are interconnected. An installation position is formed at the intersection of the main pipe and the two branch pipes. A cylindrical installation sleeve is provided at the center of the installation position. A switching component is rotatably installed inside the installation sleeve. The switching component includes a rotating shaft inserted into the installation sleeve and a baffle plate provided on the outer wall of the rotating shaft. The baffle plate cooperates with a baffle assembly provided at the inlet of the branch pipe to isolate the main pipe from one of the branch pipes. A placement space is formed between the two branch pipes for placing the baffle plate. The baffle plate rotates between the branch pipe and the placement space by rotating the switching component to realize the switching of the flow state of the branch pipe.

[0006] The above scheme allows the baffle to rotate between the branch pipe and the placement space. When it rotates to the branch pipe, the baffle and the baffle assembly cooperate to isolate the main pipe from the branch pipe, realizing single-channel dust collection. When the rotating switching assembly rotates the baffle to the placement space, both branch pipes are connected to the main pipe, realizing dual-channel dust collection.

[0007] Preferably, one of the branch pipes is a first branch pipe, which is always connected to the main pipe, and the other branch pipe is a second branch pipe, with the baffle assembly located at the inlet of the second branch pipe.

[0008] In the above setup, the first branch pipe, which is fully connected, is not blocked by baffle components during the dust collection process, ensuring sufficient adsorption force. The second branch pipe, without affecting the adsorption force of the first branch pipe, can selectively increase the adsorption capacity, thus achieving dual-channel dust collection.

[0009] Preferably, the baffle assembly includes an arc-shaped surrounding plate disposed on the upper half of the second branch pipe and two component baffles disposed on the lower half of the second branch pipe. The two component baffles are disposed between the second branch pipe and the mounting sleeve, and isolate the lower half of the second branch pipe from the main pipe and the lower half of the first branch pipe. The arc-shaped surrounding plate is disposed on the side of the component baffles away from the mounting sleeve and fits against the upper end of the component baffles. The arc-shaped surrounding plate and the two component baffles form a fan-shaped space that connects the second branch pipe with the main pipe. When the baffle plate rotates to the second branch pipe, the baffle plate fits into the fan-shaped space.

[0010] With the above setup, the wind deflector, together with the two sets of baffles, the arc-shaped enclosure, and the mounting sleeve, forms a closed system that isolates the second branch pipe from the main pipe and the first branch pipe, thus allowing only the first branch pipe to connect with the main pipe and achieving single-channel dust collection.

[0011] Preferably, the housing includes a detachably connected upper housing and a lower housing, with an arc-shaped enclosure on the upper housing and two sets of baffles on the lower housing.

[0012] The above settings are designed to facilitate the production of the housing and baffle assembly, improve production efficiency, and reduce production costs.

[0013] Preferably, the mounting sleeve is provided with a positioning structure that can limit the rotational travel of the switching component.

[0014] Preferably, the positioning structure includes a travel recess formed at the upper end of the mounting sleeve, the travel recess having two positioning ends, the wind baffle rotating within the travel recess, when one end of the wind baffle is in contact with one of the positioning ends, the wind baffle fits into the fan-shaped space, when the other end of the wind baffle is in contact with the other positioning end, the wind baffle is located in the placement space.

[0015] The positioning structure allows the wind deflector to be rotated to the correct position as needed. The operator can be prompted by the resistance felt when the positioning end is in contact with the wind deflector, thus improving ease of use.

[0016] Preferably, the switching assembly further includes an operating knob that is detachably plugged into the rotating shaft, the operating knob passing through the upper housing and exposed above the upper housing.

[0017] Preferably, the outer wall of the rotating shaft is provided with a protruding plug rod in the longitudinal direction, and the operating knob is provided with a plug groove that can be plugged into and cooperate with the protruding plug rod.

[0018] An operating knob is provided to allow the operator to easily drive the rotating shaft, thereby driving the wind deflector to rotate.

[0019] Preferably, the upper end of the operating knob is provided with a triangular indicator mark. When the pointed end of the indicator mark is facing the second branch pipe, the wind deflector is located at the second branch pipe. When the pointed end of the indicator mark is facing the first branch pipe, the wind deflector is located at the placement empty position.

[0020] Indicator markers are set up to help operators observe the location of the baffle and determine whether the vacuum cleaner is in single-channel or dual-channel mode.

[0021] Preferably, the lower end of the protruding plug rod is located on the wind baffle, and both ends of the wind baffle are provided with reinforcing ribs connected to the rotation shaft. This makes the stress structure of the wind baffle more stable and reasonable.

[0022] The beneficial effects of this utility model are as follows:

[0023] This utility model sets up two branch pipes, and sets up a baffle assembly and a switching assembly that can be detachably cooperated with the baffle assembly in the second branch pipe, so that the flow state of the second branch pipe can be controlled by rotating the switching assembly. The switching operation is simple and convenient.

[0024] Therefore, when the amount of dust to be adsorbed is small, the baffle of the switching component can be rotated to the second branch pipe. At this time, the second branch pipe is isolated from the main pipe and the first branch pipe, realizing single-channel dust collection. When the amount of dust to be adsorbed is large, the baffle can be rotated to the empty position. At this time, the second pipe is connected to the main pipe, realizing dual-channel dust collection. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the lower housing of this utility model when it is engaged with the switching component;

[0027] Figure 3 This is a schematic diagram of the structure of the present invention with the upper and lower shells separated;

[0028] Figure 4 This is a schematic diagram of the switching component of this utility model.

[0029] Reference numerals: housing 10, upper housing 11, lower housing 12, main pipe 21, branch pipe 22, first branch pipe 221, second branch pipe 222, mounting position 30, mounting sleeve 31, switching assembly 40, rotating shaft 41, wind baffle 42, operating knob 43, indicator mark 44, protruding plug rod 451, plug groove 452, reinforcing rib 46, baffle assembly 50, arc-shaped enclosure 51, component baffle 52, fan-shaped space 60, placement space 70, positioning structure 80, stroke recess 81, positioning end 82. Detailed Implementation

[0030] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0031] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the figures only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] Example 1: Reference Figures 1-4 This embodiment provides a switching device for switching between single and dual-channel dust collection in a wall sander. It is installed on the dust collection pipe of the wall sander (the dust collection pipe is not shown in the figure) and includes a housing 10. The housing 10 includes an upper housing 11 and a lower housing 12 that are detachably connected. The upper housing 11 and the lower housing 12 are spliced ​​together to form a main pipe 21 and two branch pipes 22 that are interconnected. There are three dust collection pipes. One of them is connected between the main pipe 21 and the fan that generates the suction force. The other two dust collection pipes are connected to the two branch pipes 22 respectively and are connected between the branch pipes 22 and the sanding part of the wall sander.

[0033] An installation position 30 is formed at the intersection of the main pipe 21 and the two branch pipes 22. A cylindrical installation sleeve 31 is provided at the center of the installation position 30. A switching component 40 is installed rotatably inside the installation sleeve 31. The switching component 40 includes a rotating shaft 41 inserted into the installation sleeve 31 and a baffle plate 42 provided on the outer wall of the rotating shaft 41. The baffle plate 42 is fan-shaped and cooperates with the baffle assembly 50 provided at the inlet of the branch pipe 22 to isolate the main pipe 21 from one of the branch pipes 22. A placement space 70 for placing the baffle plate 42 is formed between the two branch pipes 22. The inlet of the branch pipe 22 is the pipe opening of the branch pipe 22 near the main pipe 21.

[0034] The baffle plate 42 rotates between the branch pipe 22 and the placement space 70 via the rotation switching component 40, thereby switching the flow state of the branch pipe 22. When the baffle plate 42 rotates to the branch pipe 22, the baffle plate 42 cooperates with the baffle assembly 50 to isolate the main pipe 21 from the branch pipe 22, thereby achieving single-channel dust collection. When the baffle plate 42 rotates to the placement space 70, both branch pipes 22 are connected to the main pipe 21, thereby achieving dual-channel dust collection.

[0035] Specifically, one of the branch pipes 22 is the first branch pipe 221, which is always connected to the main pipe 21. The other branch pipe 22 is the second branch pipe 222, and the baffle assembly 50 is located at the inlet of the second branch pipe 222. The fully connected first branch pipe 221 is unobstructed by the baffle assembly 50 during dust collection, ensuring sufficient adsorption force. The second branch pipe 222, without affecting the adsorption force of the first branch pipe 221, can selectively increase the adsorption capacity, achieving dual-channel dust collection.

[0036] Specifically, the baffle assembly 50 includes an arc-shaped surrounding plate 51 disposed on the upper half of the second branch pipe 222 and two component baffles 52 disposed on the lower half of the second branch pipe 222. The two component baffles 52 are disposed between the second branch pipe 222 and the mounting sleeve 31, and isolate the lower half of the second branch pipe 222 from the main pipe 21 and the lower half of the first branch pipe 221. The arc-shaped surrounding plate 51 is disposed on the side of the component baffles 52 away from the mounting sleeve 31 and fits against the upper end of the component baffles 52. The arc-shaped surrounding plate 51 and the two component baffles 52 form a fan-shaped space 60 that connects the second branch pipe 222 with the main pipe 21. When the wind deflector 42 rotates to the second branch pipe 222, the wind deflector 42 fits into the fan-shaped space 60. Therefore, the wind deflector 42 can form a closed state with the two sets of baffles 52, arc-shaped enclosure 51, and mounting sleeve 31 to isolate the second branch pipe 222 from the main pipe 21 and the first branch pipe 221, thereby realizing single-channel dust collection.

[0037] To facilitate the manufacturing of the baffle assembly 50, improve production efficiency, and reduce production costs, the arc-shaped enclosure 51 is disposed on the upper shell 11, and the two baffles 52 are disposed on the lower shell 12.

[0038] To ensure that the wind deflector 42 can be rotated to the correct position as needed, thus improving ease of use, the mounting sleeve 31 is equipped with a positioning structure 80 that limits the rotational travel of the switching assembly 40.

[0039] Specifically, the positioning structure 80 includes a travel recess 81 formed on the upper end of the mounting sleeve 31. The travel recess 81 has two positioning ends 82. The wind baffle 42 rotates within the travel recess 81. When one end of the wind baffle 42 is in contact with one of the positioning ends 82, the wind baffle 42 fits into the fan-shaped space 60. When the other end of the wind baffle 42 is in contact with the other positioning end 82, the wind baffle 42 is located at the placement space 70.

[0040] To facilitate the operator in driving the rotating shaft 41, thereby driving the wind deflector 42 to rotate, the switching assembly 40 also includes an operating knob 43 that is detachably connected to the rotating shaft 41. The operating knob 43 passes through the upper housing 11 and is exposed above the upper housing 11.

[0041] Furthermore, to facilitate the operator's observation of the location of the baffle 42 and thus determine whether the vacuum cleaner is in single-channel or dual-channel mode, the upper end of the operating knob 43 is provided with a triangular indicator mark 44. When the pointed end of the indicator mark 44 faces the second branch pipe 222, the baffle 42 fits into the fan-shaped space 60; when the pointed end of the indicator mark 44 faces the first branch pipe 221, the baffle 42 is located in the placement space 70.

[0042] Specifically, the outer wall of the rotating shaft 41 is provided with a protruding plug rod 451 in the longitudinal direction, and the operating knob 43 is provided with a plug groove 452 that can be plugged into the protruding plug rod 451.

[0043] To make the structure of the wind deflector 42 and the stress structure of the rotating shaft 41 more reasonable, the lower end of the protruding plug rod 451 is provided on the wind deflector 42, and the two straight ends of the wind deflector 42 are provided with reinforcing ribs 46 that are connected to the rotating shaft 41.

[0044] The working process of this embodiment:

[0045] When there is a large amount of dust to be adsorbed, dual-channel dust collection can be used. Specifically, hold the operating knob 43 and rotate it so that the sharp corner of the indicator mark 44 faces the first branch pipe 221. At this time, the operating knob 43 drives the baffle plate 42 to rotate through the protruding plug rod 451 and the plug groove 452, so that the baffle plate 42 rotates to the placement space 70, thereby connecting the second branch pipe 222 with the main pipe 21. The first branch pipe 221 is already connected to the main pipe 21, thus realizing dual-channel dust collection.

[0046] When the amount of dust to be adsorbed is small, single-channel dust collection can be used. Specifically, the operation knob 43 is rotated so that the sharp corner of the indicator mark 44 faces the second branch pipe 222. The operation knob 43 drives the baffle plate 42 to rotate into the fan-shaped space 60, so that the second branch pipe 222 is isolated from the main pipe 21 and the first branch pipe 221, thereby realizing single-channel dust collection.

[0047] The above description is merely a specific example of this utility model and does not constitute any limitation on this utility model. Obviously, those skilled in the art, after understanding the content and principle of this utility model, may make various modifications and changes in form and details without departing from the principle and structure of this utility model. However, these modifications and changes based on the concept of this utility model are still within the protection scope of the claims of this utility model.

Claims

1. A switching device for switching between single and dual-channel dust collection in a grinding machine, characterized in that, The housing (10) includes a main pipe (21) and two branch pipes (22) that are interconnected. A mounting position (30) is formed at the intersection of the main pipe (21) and the two branch pipes (22). A mounting sleeve (31) is provided at the center of the mounting position (30). A switching assembly (40) is installed inside the mounting sleeve (31) and rotates. The switching assembly (40) includes a rotating shaft (41) inserted into the mounting sleeve (31) and a mounting sleeve (41) located on the outer wall of the rotating shaft (41). The wind deflector (42) cooperates with the baffle assembly (50) located at the inlet of the branch pipe (22) to isolate the main pipe (21) from one of the branch pipes (22). A placement space (70) for placing the wind deflector (42) is formed between the two branch pipes (22). The wind deflector (42) rotates between the branch pipe (22) and the placement space (70) through the rotation switching assembly (40) to realize the switching of the flow state of the branch pipe (22).

2. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 1, characterized in that, One of the branch pipes (22) is the first branch pipe (221), which is always connected to the main pipe (21). The other branch pipe (22) is the second branch pipe (222), and the baffle assembly (50) is located at the inlet of the second branch pipe (222).

3. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 2, characterized in that, The baffle assembly (50) includes an arc-shaped enclosure (51) on the upper half of the second branch pipe (222) and two component baffles (52) on the lower half of the second branch pipe (222). The two component baffles (52) are located between the second branch pipe (222) and the mounting sleeve (31). The arc-shaped enclosure (51) is located on the side of the component baffle (52) away from the mounting sleeve (31) and is attached to the upper end of the component baffle (52). The arc-shaped enclosure (51) and the two component baffles (52) form a fan-shaped space (60) that connects the second branch pipe (222) with the main pipe (21). When the wind deflector (42) rotates to the second branch pipe (222), the wind deflector (42) fits into the fan-shaped space (60).

4. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 3, characterized in that, The housing (10) includes a detachably connected upper housing (11) and lower housing (12), an arc-shaped enclosure (51) is provided on the upper housing (11), and two sets of baffles (52) are provided on the lower housing (12).

5. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 3, characterized in that, The mounting sleeve (31) is provided with a positioning structure (80) that can limit the rotational stroke of the switching assembly (40).

6. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 5, characterized in that, The positioning structure (80) includes a travel recess (81) formed on the upper end of the mounting sleeve (31). The travel recess (81) has two positioning ends (82). The wind deflector (42) rotates in the travel recess (81). When one end of the wind deflector (42) is in contact with one of the positioning ends (82), the wind deflector (42) fits into the fan-shaped space (60). When the other end of the wind deflector (42) is in contact with the other positioning end (82), the wind deflector (42) is located in the placement space (70).

7. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 1, characterized in that, The switching assembly (40) also includes an operation knob (43) that is detachably plugged into the rotating shaft (41), the operation knob (43) passing through the housing (10) and exposed above the housing (10).

8. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 7, characterized in that, The outer wall of the rotating shaft (41) is provided with a protruding plug rod (451) in the longitudinal direction, and the operating knob (43) is provided with a plug groove (452) that can be plugged into the protruding plug rod (451).

9. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 7, characterized in that, The upper end of the operating knob (43) is provided with a triangular indicator mark (44). When the sharp corner of the indicator mark (44) is facing the second branch pipe (222), the wind deflector (42) is located at the second branch pipe (222). When the sharp corner of the indicator mark (44) is facing the first branch pipe (221), the wind deflector (42) is located at the placement space (70).

10. The switching device for switching between single and dual-channel dust collection in a grinding machine according to claim 8, characterized in that, The lower end of the protruding plug rod (451) is provided on the wind baffle (42), and the wind baffle (42) has reinforcing ribs (46) at both ends that are connected to the rotating shaft (41).

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