Purging mechanism for ventilation cleaning device

Abstract

The utility model relates to a blowing mechanism for a ventilation cleaning device, which comprises a ventilation pipe, the upper end of the ventilation pipe is an air inlet end connected with air supply equipment, the lower end of the ventilation pipe is an air outlet end, and the lower end of the ventilation pipe is rotatably connected with a rotating table. The edge of the bottom face of the rotating table is provided with at least two spraying holes which face the objective table and are communicated with the ventilation pipe, the two spraying holes are located in a circle with the center of the rotating table as the circle center and evenly distributed along the circumference of the circle, and the spraying directions of the two spraying holes incline towards the same side. According to the technical scheme, through the inclined spraying holes, after air is sprayed out, the rotating table rotates horizontally under the action of the counter-acting force of air flow, the spraying holes rotate synchronously along with the rotating table, the air flow is sprayed to a cleaned workpiece in a spiral shape, and the cleaning effect on the surface of the cleaned workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a blowing mechanism for a ventilation and cleaning device. Background Art

[0002] In the mechanical processing industry, the air flow cleaning method is usually used to clean small particles of residue on the surface of parts. It can be roughly divided into two methods: negative pressure cleaning and positive pressure cleaning. The negative pressure cleaning method uses negative pressure to absorb the residue on the surface of the parts. This method can effectively prevent small particles of residue from spreading to the surroundings during the cleaning process, but the cleaning effect is not good for parts with irregular surfaces. Positive pressure cleaning can improve the cleaning effect of parts with irregular surfaces, but small particles of residue are easily spread around under the blowing of positive pressure airflow, causing pollution around the cleaning station. For this reason, the inventor proposed a device for cleaning by air flow, which uses a combination of positive and negative pressure during the cleaning process to improve the cleaning effect and reduce the amount of small particles of residue spreading to the surroundings. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a blowing mechanism for a ventilation and cleaning device to solve the problem in the prior art that negative pressure cleaning is not effective for cleaning parts with irregular surfaces and that small particle residues in positive pressure cleaning are easily spread around under the blowing of positive pressure airflow, causing pollution around the cleaning station.

[0004] The utility model is achieved through the following technical solutions:

[0005] A purge mechanism for a ventilation and cleaning device comprises a ventilation pipe, the upper end of the ventilation pipe being an air inlet end connected to an air supply device, the lower end of the ventilation pipe being an air outlet end, the lower end of the ventilation pipe being rotatably connected to a rotating table, the bottom edge of the rotating table being provided with at least two injection holes facing the loading platform and connected to the ventilation pipe, the two injection holes being both located on a circle with the center of the rotating table as the center, and being evenly distributed along the circumference of the circle, and the injection directions of the two injection holes being inclined toward the same side.

[0006] It is further defined that an air supply hole connected to the ventilation pipe is opened at the center of the bottom surface of the rotating table.

[0007] It is further defined that the rotating table is provided with a blocking assembly for blocking the end of the air supply hole, the blocking assembly includes a plurality of blocking blocks, the plurality of blocking blocks are evenly distributed with the center of the air supply hole as the center of a circle, and are assembled to cover one end of the air supply hole;

[0008] The plurality of blocking blocks are each provided with an elastic support member acting on the rotating platform on the outward side, and the elastic support member keeps the air supply hole covered;

[0009] A plurality of the blocking blocks are each provided with a notch on one side thereof, and an air guide hole is formed by enclosing the plurality of notches. When the plurality of the blocking blocks are in a state of abutting against each other, the aperture of the air guide hole is smaller than the aperture of the air supply hole.

[0010] It is further defined that the blocking assembly is provided with an annular cover plate and a support plate fixed to the rotating table on the upper and lower sides respectively, the edge of the support plate is provided with an upwardly extending annular baffle, the cover plate is connected to the upper part of the annular baffle, and a cavity for accommodating the blocking assembly is formed between the cover plate and the support plate;

[0011] The two ends of the elastic support member respectively abut against the inner side of the annular baffle and the outer side of the blocking block.

[0012] It is further defined that a support block is connected to the outside of the blocking block, a guide rod is provided on the support block, and the guide rod passes through the annular baffle and is slidably engaged with the annular baffle;

[0013] The elastic support member is a spring and is sleeved outside the guide rod.

[0014] The beneficial effects of the present invention are:

[0015] The blowing mechanism for a ventilation cleaning device uses an inclined spray hole. After the air is ejected, the rotating table will rotate horizontally under the action of the reaction force of the airflow, and the spray hole will also rotate synchronously with the rotating table, so that the airflow is sprayed in a spiral shape toward the workpiece to be cleaned, thereby improving the cleaning effect on the surface of the workpiece to be cleaned.

[0016] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 4 for Figure 3 Enlarged view of middle B;

[0021] Figure 5It is a schematic diagram of the coordination structure of multiple blocking blocks;

[0022] Figure 6 Schematic diagram of the coordination structure of the air-supplementing hole and the air-guiding hole;

[0023] Figure 7 It is a three-dimensional diagram of the utility model;

[0024] Figure 8 This is the main view of the utility model;

[0025] Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure of AA;

[0026] In the figure: 1. Purge mechanism; 2. Ventilation pipe; 3. Turntable; 4. Injection hole; 5. Air supply hole; 6. Sealing block; 7. Elastic support member; 8. Air guide hole; 9. Support plate; 10. Cover plate; 11. Annular baffle; 12. Support block; 13. Guide rod; 14. Seat plate; 15. Panel; 16. Support column; 17. Flip plate; 18. Table; 19. Pressure sensor; 20. Reciprocating push mechanism; 21. Annular frame; 22. Support plate; 23. Sleeve. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the above description of the present invention, it should be noted that the terms "one side" and "the other side" and the like indicate positions or locations based on the positions or locations shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0031] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0032] See also Figure 1-6 The utility model provides a technical solution: a blowing mechanism for a ventilation and cleaning device, comprising a ventilation pipe 2, the upper end of the ventilation pipe 2 being an air inlet end connected to an air supply device, the lower end of the ventilation pipe 2 being an air outlet end, the lower end of the ventilation pipe 2 being rotatably connected to a rotating table 3, the bottom edge of the rotating table 3 being provided with at least two injection holes 4 facing the stage and connected to the ventilation pipe 2, the two injection holes 4 being both located on a circle with the center of the rotating table 3 as the center, and being evenly distributed along the circumference of the circle, and the injection directions of the two injection holes being inclined toward the same side.

[0033] The rotating table 3 and the vent pipe 2 rotate in coordination, and the two are connected. The airflow introduced into the vent pipe 2 by the air supply equipment will enter the rotating table 3 and be ejected outward from the injection hole 4 provided on the rotating table 3, that is, the air flow is injected toward the workpiece to be cleaned to remove small particles of residue on the surface of the workpiece to be cleaned. Moreover, since the injection hole 4 is in an inclined state, after the air is ejected, the rotating table 3 will rotate horizontally under the action of the reaction force of the airflow, and the injection hole 4 will also rotate synchronously with the rotating table 3, so that the airflow is sprayed toward the workpiece to be cleaned in a spiral shape, thereby improving the cleaning effect on the surface of the workpiece to be cleaned.

[0034] In this embodiment, an air supply hole 5 communicating with the ventilation pipe 2 is opened at the center of the top surface of the rotating platform 3.

[0035] The air flow ejected by the rotating table 3 will continuously push the air above the loading platform to diffuse outward, forming a low-pressure area at the center of the loading platform. The air flow in the low-pressure area is small, forming a cleaning blind spot. By opening an air supply hole 5 in the center of the rotating table 3, the air in the rotating table 3 can be passed into the low-pressure area to avoid the formation of a cleaning blind spot in the low-pressure area.

[0036] In this embodiment, a blocking assembly for blocking the end of the air-supply hole 5 is provided on the rotating table 3. The blocking assembly includes a plurality of blocking blocks 6. The plurality of blocking blocks 6 are evenly distributed around the center of the air-supply hole 5 and are assembled to cover one end of the air-supply hole 5.

[0037] The plurality of blocking blocks 6 are provided with elastic supports 16 pieces 7 acting on the rotating platform 3 on the outward side, and the elastic supports 16 pieces 7 maintain the covering state of the air supply holes 5;

[0038] The plurality of blocking blocks 6 are each provided with a notch on one side thereof, and an air guide hole 8 is formed by enclosing the plurality of notches. When the plurality of blocking blocks 6 are in a state of abutting against each other, the aperture of the air guide hole 8 is smaller than the aperture of the air supply hole 5 .

[0039] The rotation of the turntable 3 utilizes the reaction force of the airflow. The greater the positive pressure ventilation pressure, the faster the airflow speed ejected from the injection hole 4, the faster the rotation speed of the turntable 3, and the greater the amount of air that needs to be replenished into the center position of the loading platform; a sealing assembly is formed by multiple sealing blocks 6 to cover the end of the air supply hole 5, and after the multiple sealing blocks 6 are assembled, they are surrounded by gaps to form an air guide hole 8 with a smaller aperture than the air supply hole 5. The faster the rotation speed of the turntable 3, the greater the centrifugal force exerted on the sealing block 6, the greater the distance the elastic support 16 7 moves outward, the larger the aperture of the air guide hole 8, and the greater the amount of air replenished into the low-pressure area. The air supply amount can be automatically adjusted according to the rotation speed of the turntable 3, that is, it is adjusted in direct proportion to the airflow speed ejected from the injection hole 4.

[0040] In this embodiment, an annular cover plate 10 and a support plate 9 fixed to the rotating table 3 are respectively provided on both sides of the blocking assembly. An upwardly extending annular baffle 11 is provided on the edge of the support plate 9. The cover plate 10 is connected to the upper part of the annular baffle 11, and a cavity for accommodating the blocking assembly is formed between the cover plate 10 and the support plate 9.

[0041] The two ends of the elastic support 16 member 7 respectively abut against the inner side of the annular baffle 11 and the outer side of the blocking block 6 .

[0042] The cover plate 10 and the support plate 9 constitute a clamping structure for fixing the blocking block 6, and the cover plate 10 and the support plate 9 are supported 16 by the annular baffle 11 to keep the structures of the two stable. At the same time, the annular baffle 11 will serve as an elastic support 16 for the abutment portion of the end of the piece 7 away from the blocking block 6.

[0043] In this embodiment, the outer side of the blocking block 6 is connected to a support block 16 12 , and a guide rod 13 is provided on the support block 16 12 . The guide rod 13 passes through the annular baffle 11 and slides with the annular baffle 11 .

[0044] The elastic support 16 7 is a spring and is sleeved outside the guide rod 13 .

[0045] The support block 16 12 is fixedly connected to the blocking block 6 , and is connected to a guide rod 13 , which cooperates with the annular baffle 11 to provide a sliding track limit for the blocking block 6 .

[0046] See also Figure 7-9 , an application of the above technical solution, a top-ventilated cleaning device, comprising a loading platform for placing a workpiece to be cleaned, an air injection mechanism 1 for blowing toward the bottom surface of the loading platform is arranged above the loading platform, the first air injection mechanism 1 comprises a vent pipe 2, the lower end of the vent pipe 2 is an air inlet end connected to an air supply device, the upper end of the vent pipe 2 is an air outlet end, the upper end of the vent pipe 2 is rotatably connected to a rotating table 3, and at least two injection holes 4 facing the loading platform and connected to the vent pipe 2 are provided on the edge of the top surface of the rotating table 3, the two injection holes 4 are both located on a circle with the center of the rotating table 3 as the center, and are evenly distributed along the circumference of the circle, and the injection directions of the two injection holes are inclined toward the same side.

[0047] The rotating table 3 and the vent pipe 2 rotate in coordination and are connected. The air flow introduced into the vent pipe 2 by the air supply device will enter the rotating table 3 and be ejected outwards from the injection holes 4 provided on the rotating table 3, that is, the air flow will be ejected toward the workpiece to be cleaned to remove small particles and residues on the surface of the workpiece to be cleaned. Moreover, since the injection holes 4 are in an inclined state, after the air is ejected, the rotating table 3 will rotate horizontally under the action of the reaction force of the air flow, and the injection holes 4 will also rotate synchronously with the rotating table 3, so that the air flow will be ejected toward the workpiece to be cleaned in a spiral shape, thereby improving the cleaning effect of the surface of the workpiece to be cleaned. After the air flow is blown, it will be blocked by the stage and reflected upwards.

[0048] Due to the simultaneous start-up of the negative pressure equipment, a low-pressure area will be formed in the conical flow channel 25, and the air above the worktable will be sucked into the low-pressure area. When entering the conical flow channel 25, the original flow state will be retained, that is, the spiral flow state will be retained. Since the structure of the conical flow channel 25 is small at the top and large at the bottom, the flow rate of the air can be gradually accelerated after entering, which can reduce the amount of fine particles and debris adhering to the inner wall of the conical flow channel 25.

[0049] The stage is used to place or fix the workpiece to be cleaned, and the air injection mechanism 1 is used to introduce positive pressure airflow to the workpiece to be cleaned to purge the surface of the workpiece to be cleaned. A conical flow channel 25 is provided in the air guide cover 24, and the lower end of the conical flow channel 25 is larger than the upper end, and the lower end surrounds the top of the stage, and the upper end is connected to a negative pressure device for sucking the airflow above the stage. After starting the air supply device and the negative pressure device, the air flow ejected by the positive pressure device will act on the surface of the workpiece to be cleaned through the air injection mechanism 1, and purge the small particles of residue on the surface of the workpiece to be cleaned, while the negative pressure device acts on the top of the stage, that is, above the workpiece to be cleaned, through the conical flow channel 25, and is used to suck in air carrying small particles of residue;

[0050] Using positive pressure air to blow the surface of the workpiece to be cleaned can improve the cleaning effect of the workpiece on the surface to be cleaned. By using negative pressure to absorb the air carrying small particles of residue, the amount of small particles of residue that spread to the surrounding area during the cleaning process can be effectively reduced.

[0051] In this embodiment, the loading platform includes a base plate 14 and a panel 15 disposed above the base plate 14 , and a plurality of support columns 16 are disposed between the panel 15 and the base plate 14 ;

[0052] A plurality of flaps 17 are hinged to the edge of the panel 15 , and a pushing portion for pushing the flaps 17 to flip is installed on the seat plate 14 .

[0053] The panel 15 serves as a placement area for the workpiece to be cleaned. It is connected to the base plate 14 through multiple support columns 16. Several flaps 17 are installed on the edge of the panel 15 in a hinged manner. The several flaps 17 can be flipped around the intersection point as the axis. A pushing part is installed on the base plate 14, and the several flaps 17 can be pushed upward by the pushing part, so that the several flaps 17 are in an upward tilted state away from the panel 15 and surround the panel 15, serving as a guide structure for the air injection mechanism 1 to spray air downward, prompting the airflow to be reflected toward the conical flow channel 25.

[0054] In this embodiment, the pushing portion includes a reciprocating pushing mechanism 20 installed on the bottom plate and an annular frame 21 connected to the execution end of the reciprocating pushing mechanism 20 , and the top end of the annular frame 21 abuts against the bottom surfaces of the plurality of flaps 17 .

[0055] The reciprocating pushing mechanism 20 can be a structure such as a cylinder or an electric push rod, and its execution end is connected to the annular frame 21. By pushing the annular frame 21, the multiple flaps 17 can be pushed to flip synchronously.

[0056] In this embodiment, a platform 18 is laid on the panel 15 , and a pressure sensor 19 is provided between the platform 18 and the panel 15 . The pressure sensor 19 is electrically connected to a controller, and the controller is electrically connected to the reciprocating pushing mechanism 20 .

[0057] The platform 18 is laid on the panel 15, and a pressure sensor 19 is set between the panel 15. When the air injection mechanism 1 is started, the air flow will generate pressure on the platform 18. The pressure sensor 19 is used to detect the pressure value and send the numerical information to the controller. The controller can control the pushing distance of the reciprocating pushing mechanism 20 according to the change of the pressure value, that is, control the rising distance of the annular frame 21 to control the flipping angle of the flap 17.

[0058] In this embodiment, the annular frame 21 includes a support ring and a support plate 22. The upper end of the support ring is against the bottom surface of several flaps 17, and the lower end is connected to the support plate 22. The support plate 22 is provided with mounting holes for multiple support columns 16 to pass through, and the mounting holes are connected to sliding sleeves 23 that slide and fit on the support columns 16.

[0059] The support plate 22 serves as a connection portion with the reciprocating pushing mechanism 20 . The support plate 22 uses the sliding sleeve 23 as a sliding matching structure with the plurality of support columns 16 , thereby improving the stability of the up and down sliding movement.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A purge mechanism for a ventilation and cleaning device, characterized in that: It includes a ventilation pipe, the upper end of the ventilation pipe is an air inlet end connected to the air supply equipment, the lower end of the ventilation pipe is an air outlet end, the lower end of the ventilation pipe is rotatably connected to a rotating table, and the edge of the bottom surface of the rotating table is provided with at least two injection holes facing the loading platform and connected to the ventilation pipe, the two injection holes are both located on a circle with the center of the rotating table as the center, and are evenly distributed along the circumference of the circle, and the injection directions of the two injection holes are inclined toward the same side.

2. A purge mechanism for a ventilation and cleaning device according to claim 1, characterized in that: An air supply hole connected with the ventilation pipe is opened at the center of the bottom surface of the rotating platform.

3. The purge mechanism for a ventilation and cleaning device according to claim 2, characterized in that: The rotating table is provided with a blocking component for blocking the end of the air-supply hole, and the blocking component includes a plurality of blocking blocks, which are evenly distributed with the center of the air-supply hole as the center of a circle and are assembled to cover one end of the air-supply hole; The plurality of blocking blocks are each provided with an elastic support member acting on the rotating platform on the outward side, and the elastic support member keeps the air supply hole covered; A plurality of the blocking blocks are each provided with a notch on one side thereof, and an air guide hole is formed by enclosing the plurality of notches. When the plurality of the blocking blocks are in a state of abutting against each other, the aperture of the air guide hole is smaller than the aperture of the air supply hole.

4. A purge mechanism for a ventilation and cleaning device according to claim 3, characterized in that: The upper and lower sides of the blocking assembly are respectively provided with an annular cover plate and a support plate fixed on the rotating table, the edge of the support plate is provided with an upwardly extending annular baffle, the cover plate is connected to the upper part of the annular baffle, and a cavity for accommodating the blocking assembly is formed between the cover plate and the support plate; The two ends of the elastic support member respectively abut against the inner side of the annular baffle and the outer side of the blocking block.

5. The purge mechanism for a ventilation and cleaning device according to claim 4, characterized in that: The outer side of the blocking block is connected to a support block, and the support block is provided with a guide rod, and the guide rod passes through the annular baffle and is slidably engaged with the annular baffle; The elastic support member is a spring and is sleeved outside the guide rod.

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