Cleaning mechanism for range hood

Abstract

The utility model belongs to the technical field of filter screen cleaning, and particularly relates to a cleaning mechanism for a range hood, which comprises a hollow mounting pipe, a rotary joint, a mounting seat and a spray pipe, the lower end of the mounting pipe is fixedly connected with the rotary joint, the lower end of the rotary joint is fixedly connected with the mounting seat, and the spray pipe is transversely mounted on the mounting seat. The mounting pipe, the rotary joint, the mounting seat and the spray pipe are sequentially communicated, the spray pipe is of a hollow structure with the outer end closed, a plurality of spray holes communicated with the inner wall of the spray pipe are formed in the lower end face of the spray pipe, the central axis of the spray pipe and the central axis of the spray pipe form a vertical face, and the central axis of one or more spray holes inclines towards the side away from the vertical face from top to bottom. The utility model aims to provide a cleaning device for a filter screen, which aims to clean the filter screen by using compressed air as a power source to drive a mounting seat and a spray pipe to rotate around a mounting pipe through an inclined spray hole matched with a rotary joint and a spray head, so that the filter screen with a larger area is cleaned, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of filter cleaning, and in particular relates to a cleaning mechanism for a range hood. Background Art

[0002] In the tobacco-making process of cigarette manufacturing, in order to ensure the dryness of the tobacco, the tobacco needs to be dried. After the tobacco is dried, humid air appears. In order to ensure the continuous operation of the equipment, the humid air needs to be removed.

[0003] During the dehumidification process, in order to prevent the tobacco from being discharged with the humid air, a flat filter is added to filter the humid air. However, the flat filter will become clogged after long-term use.

[0004] In order to solve the problem of flat filter clogging, the tobacco industry generally uses high-pressure gas and sets a nozzle above the filter to clean the filter by spraying air at the filter.

[0005] In order to ensure the cleaning effect, the cleaning mechanism is generally composed of a plurality of single-hole ordinary nozzles installed side by side. The fixed installation method leads to a limited spraying area and low efficiency. Utility Model Content

[0006] The purpose of the utility model is to provide a cleaning mechanism for a range hood, which, through an inclined spray hole and in cooperation with a rotary joint, cleans the filter through the spray head while using compressed air as a power source to drive the mounting seat and the spray pipe to rotate around the mounting pipe, thereby achieving cleaning of a larger area of ​​the filter and improving cleaning efficiency.

[0007] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0008] A cleaning mechanism for a range hood comprises a mounting tube, a rotating joint, a mounting seat and a nozzle, wherein the mounting tube is hollow and the lower end is fixedly connected to the rotating joint, the lower end of the rotating joint is fixedly connected to the mounting seat, the nozzle is laterally mounted on the mounting seat, the mounting tube, the rotating joint, the mounting seat and the nozzle are connected in sequence, the nozzle is a hollow structure with a closed outer end, a plurality of spray holes connected to the inner wall of the nozzle are formed on the lower end face of the nozzle, the central axis of the nozzle forms a vertical plane with the central axis of the nozzle, and the central axis of one or more of the spray holes is inclined from top to bottom toward the side away from the vertical plane.

[0009] It is further defined that the nozzles are multiple and evenly circumferentially installed on the side wall of the mounting seat. Such a structural design, through the nozzles evenly circumferentially distributed on the side wall of the mounting seat, makes the center of gravity of the cleaning mechanism coincide with the central axis of the mounting pipe, thereby making the operation of the cleaning mechanism more stable and more practical.

[0010] It is further defined that the distances between all the nozzle holes of the plurality of nozzles and the central axis of the mounting seat are not equal, and the distances are arranged in an arithmetic progression. Such a structural design can avoid repeated cleaning of the same position of the filter screen by different nozzle holes by setting the nozzle holes at different positions from the central axis of the mounting seat, and is highly practical.

[0011] It is further defined that the multiple nozzles of the same nozzle are arranged linearly, and the distance between two adjacent nozzles on each nozzle is equal. Such a structural design, by further defining the positions of the nozzles, makes the nozzles on each nozzle on the mounting base more evenly distributed, and has strong practicality.

[0012] It is further defined that the inner end of the nozzle is integrally formed with a hollow boss, the side wall of the mounting seat is provided with a threaded blind hole, and the hollow boss is screwed into the threaded blind hole. Such a structural design completes the installation between the nozzle and the mounting seat by screwing the hollow boss and the threaded blind hole, which has a simple structure and is easy to install.

[0013] It is further defined that the outer wall of the hollow boss is wound with a tape in the threaded blind hole. With such a structural design, the nozzle and the mounting seat can be sealed by the tape, thereby preventing compressed air from being ejected from the gap between the nozzle and the mounting seat; at the same time, while ensuring that the nozzle hole on the nozzle is in an inclined state, the relative processing accuracy of the hollow boss and the threaded blind hole is reduced; moreover, according to actual use, the nozzle hole can be rotated axially to change the inclination angle, thereby changing the rotation speed of the cleaning mechanism, which is highly practical.

[0014] It is further defined that a first identification line is provided on an outer wall of the nozzle, and a second identification line is provided on the mounting seat.

[0015] It is further defined that the rotary joint includes an inner tube and an outer tube, the inner tube is fixedly connected to the mounting tube, the outer tube is fixedly connected to the mounting seat, and a bearing and a sealing ring are installed between the inner tube and the outer tube.

[0016] It is further defined that the inner tube is threadedly connected to the mounting tube, and the outer tube is threadedly connected to the mounting seat. Such a structural design is simple in structure and convenient for installation.

[0017] It is further defined that the screw connection direction between the inner tube and the mounting tube, and between the outer tube and the mounting seat is the same as the rotation direction of the mounting seat during operation. Such a structural design can avoid the problem of loosening caused by the relative movement between the mounting seat and the outer tube, and between the inner tube and the mounting tube due to the rotation of the mounting seat by limiting the screw connection direction, and is highly practical.

[0018] The utility model adopting the above technical solution has the following advantages:

[0019] 1. Through the inclined spray holes and the rotating joint, the filter is cleaned through the nozzle, and the compressed air is used as the power source to drive the mounting seat and the spray pipe to rotate around the mounting pipe, so as to achieve a larger area of ​​filter cleaning and improve the cleaning efficiency;

[0020] 2. By setting the spray holes at different positions from the central axis of the mounting base, it is possible to avoid repeated cleaning of the same position of the filter screen by different spray holes, which is more practical;

[0021] 3. By setting the tape, the sealing between the nozzle and the mounting seat can be completed to prevent compressed air from being sprayed out from the gap between the nozzle and the mounting seat; at the same time, while ensuring that the nozzle hole on the nozzle is in an inclined state, the relative processing accuracy of the hollow boss and the threaded blind hole is reduced; moreover, according to actual use, the axial rotation of the nozzle can be used to change the inclination angle of the nozzle hole, and then change the rotation speed of the cleaning mechanism, which is very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0023] Figure 1 This is a structural schematic diagram of an embodiment of a cleaning mechanism for a range hood of the utility model;

[0024] Figure 2 It is a cross-sectional structural schematic diagram of an embodiment of a cleaning mechanism for a range hood of the utility model;

[0025] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 4 This is a bottom view of the structure of an embodiment of a cleaning mechanism for a range hood according to the utility model;

[0027] The main component symbols are described as follows:

[0028] Installation pipe 1,

[0029] Rotary joint 2, inner tube 21, outer tube 22, bearing 23, sealing ring 24,

[0030] Mounting seat 3,

[0031] The nozzle 4 , the spray hole 40 , the hollow boss 41 , the first identification line 421 , and the second identification line 422 . DETAILED DESCRIPTION

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or in the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.

[0033] like Figure 1 to Figure 4 As shown, a cleaning mechanism for a range hood of the utility model comprises a mounting tube 1, a rotary joint 2, a mounting seat 3 and a nozzle 4. The mounting tube 1 is hollow and has a lower end fixedly connected to the rotary joint 2. The lower end of the rotary joint 2 is fixedly connected to the mounting seat 3. The nozzle 4 is horizontally mounted on the mounting seat 3. The mounting tube 1, the rotary joint 2, the mounting seat 3 and the nozzle 4 are connected in sequence. The nozzle 4 is a hollow structure with a closed outer end. A plurality of spray holes 40 connected to an inner wall of the nozzle 4 are provided on the lower end surface of the nozzle 4. The central axis of the nozzle 4 forms a vertical plane with the central axis of the nozzle 4. The central axis of one or more spray holes 40 is inclined from top to bottom toward a side away from the vertical plane.

[0034] There are multiple nozzles 4, which are evenly and circumferentially installed on the side wall of the mounting seat 3. In fact, according to the actual situation, only one nozzle 4 can be set, and a counterweight block can be set at the corresponding position for balance. In this embodiment, the center of gravity of the cleaning mechanism coincides with the central axis of the mounting pipe 1 by using the nozzles 4 evenly and circumferentially distributed on the side wall of the mounting seat 3, so that the operation of the cleaning mechanism is more stable and more practical.

[0035] The distances between all the spray holes 40 of the plurality of spray pipes 4 and the central axis of the mounting seat 3 are not equal, and the distances are arranged in an arithmetic progression. In fact, the positions of the spray holes 40 can also be evenly arranged according to actual conditions. In this embodiment, by setting the spray holes 40 at different positions from the central axis of the mounting seat 3, repeated cleaning of the same position of the filter screen by different spray holes 40 can be avoided, which is more practical.

[0036] The multiple spray holes 40 of the same spray pipe 4 are arranged linearly, and the distance between two adjacent spray holes 40 on each spray pipe 4 is equal. In fact, the spray holes 40 can also be set to be nonlinear according to actual conditions. In this embodiment, by further limiting the positions of the spray holes 40, the spray holes 40 on each spray pipe 4 on the mounting seat 3 are more evenly distributed, which is more practical.

[0037] The inner end of the nozzle 4 is integrally formed with a hollow boss 41, and the side wall of the mounting seat 3 is provided with a threaded blind hole, and the hollow boss 41 is screwed into the threaded blind hole. In fact, the nozzle 4 and the mounting seat 3 can also be directly welded according to actual conditions. In this embodiment, the installation between the nozzle 4 and the mounting seat 3 is completed by screwing the hollow boss 41 and the threaded blind hole, which has a simple structure and is easy to install.

[0038] The outer wall of the hollow boss 41 is wound with adhesive tape in the threaded blind hole. By setting the adhesive tape, the nozzle 4 and the mounting seat 3 can be sealed to prevent compressed air from being ejected from the gap between the nozzle 4 and the mounting seat 3; at the same time, while ensuring that the nozzle hole on the nozzle 4 is in an inclined state, the relative processing accuracy of the hollow boss 41 and the threaded blind hole is reduced; moreover, according to actual use, the nozzle 4 can be rotated axially to change the inclination angle of the nozzle hole 40, and then change the rotation speed of the cleaning mechanism, which is more practical.

[0039] A first identification line 421 is formed on the outer wall of the nozzle 4 , and a second identification line 422 is formed on the mounting seat 3 .

[0040] The rotary joint 2 includes an inner tube 21 and an outer tube 22 . The inner tube 21 is fixedly connected to the mounting tube 1 , and the outer tube 22 is fixedly connected to the mounting seat 3 . A bearing 23 and a sealing ring 24 are installed between the inner tube 21 and the outer tube 22 .

[0041] The inner tube 21 is screwed to the mounting tube 1, and the outer tube 22 is screwed to the mounting seat 3. The structure is simple and the installation is convenient.

[0042] The screw connection direction between the inner tube 21 and the mounting tube 1, and between the outer tube 22 and the mounting seat 3 is the same as the rotation direction of the mounting seat 3 during operation. In fact, welding can be used to achieve connection according to actual conditions, so there is no need to consider the rotation direction. This embodiment can avoid the tendency of relative movement between the mounting seat 3 and the outer tube 22, and between the inner tube 21 and the mounting tube 1 due to the rotation of the mounting seat 3, and thus avoid the loosening problem caused by the relative movement between the mounting seat 3 and the outer tube 22, and between the inner tube 21 and the mounting tube 1, by limiting the screw connection direction, and has strong practicality.

[0043] In this embodiment, compressed air enters through the mounting tube 1, passes through the rotary joint 2, the mounting seat 3 and the nozzle 4, and is ejected from the nozzle hole 40. While cleaning the filter screen, the compressed air is used as a power source to drive the mounting seat 3 and the nozzle 4 to rotate around the mounting tube 1.

[0044] When the rotation speed of the cleaning mechanism needs to be adjusted, the nozzle 4 is axially rotated to adjust the inclination angle of the nozzle hole 40 .

[0045] The above is a detailed introduction to a range hood cleaning mechanism provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A cleaning mechanism for a range hood, characterized in that: The invention comprises a mounting tube (1), a rotating joint (2), a mounting seat (3) and a nozzle (4); the mounting tube (1) is hollow and has a lower end fixedly connected to the rotating joint (2); the lower end of the rotating joint (2) is fixedly connected to the mounting seat (3); the nozzle (4) is transversely mounted on the mounting seat (3); the mounting tube (1), the rotating joint (2), the mounting seat (3) and the nozzle (4) are connected in sequence; the nozzle (4) is a hollow structure with a closed outer end; a plurality of nozzle holes (40) connected to the inner wall of the nozzle (4) are provided on the lower end surface of the nozzle (4); the central axis of the nozzle (4) forms a vertical plane with the central axis of the nozzle (4); and the central axis of one or more of the nozzle holes (40) is inclined from top to bottom toward a side away from the vertical plane.

2. A range hood cleaning mechanism according to claim 1, characterized in that: The nozzles (4) are multiple and evenly mounted on the side wall of the mounting seat (3) in a circumferential direction.

3. A range hood cleaning mechanism according to claim 2, characterized in that: The distances between all the spray holes (40) of the plurality of spray pipes (4) and the central axis of the mounting seat (3) are not equal, and the distance dimensions are arranged in an arithmetic progression.

4. A range hood cleaning mechanism according to claim 3, characterized in that: The multiple spray holes (40) of the same spray pipe (4) are arranged linearly, and the distance between two adjacent spray holes (40) on each spray pipe (4) is equal.

5. The cleaning mechanism for a range hood according to claim 2, characterized in that: The inner end of the nozzle (4) is integrally formed with a hollow boss (41), the side wall of the mounting seat (3) is provided with a threaded blind hole, and the hollow boss (41) is screwed into the threaded blind hole.

6. A range hood cleaning mechanism according to claim 5, characterized in that: The outer wall of the hollow boss (41) is provided with an adhesive tape wrapped in the threaded blind hole.

7. The cleaning mechanism for a range hood according to claim 1, characterized in that: The outer wall of the nozzle (4) is provided with a first identification line (421), and the mounting seat (3) is provided with a second identification line (422).

8. The cleaning mechanism for a range hood according to claim 1, characterized in that: The rotary joint (2) comprises an inner tube (21) and an outer tube (22); the inner tube (21) is fixedly connected to the mounting tube (1); the outer tube (22) is fixedly connected to the mounting seat (3); a bearing (23) and a sealing ring (24) are installed between the inner tube (21) and the outer tube (22).

9. The cleaning mechanism for a range hood according to claim 8, characterized in that: The inner tube (21) is threadedly connected to the mounting tube (1), and the outer tube (22) is threadedly connected to the mounting seat (3).

10. The cleaning mechanism for a range hood according to claim 9, characterized in that: The threaded connection direction between the inner tube (21) and the mounting tube (1), and between the outer tube (22) and the mounting seat (3) is the same as the rotation direction of the mounting seat (3) during operation.

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