Lifting laminar flow hood

Abstract

The utility model provides a kind of lifting laminar flow hood, including bearing pedestal, the upper end of bearing pedestal is provided with laminar flow hood body, the bottom end of laminar flow hood body is fixed with carrying bottom plate, both sides of carrying bottom plate are fixed with hollow side frame, the lower end of carrying bottom plate and located laminar flow hood body outside is provided with lifting guide frame, the inside of both sides of lifting guide frame is rotatably connected with threaded rod, the center of both sides of two hollow side frame insides is fixed with inner strut, the inside of lifting guide frame and located between two threaded rods is provided with driving assembly, the both ends of the lower end of lifting guide frame are fixed with L-shaped push lifting plate, the inside of bearing pedestal and located between two L-shaped push lifting plates is provided with push lifting assembly.The utility model is through the structure cooperation design of whole, guarantees the stability when laminar flow hood body lifting movement, and further provides guide for the lifting movement of laminar flow hood body using the sliding connection between multiple components, to further improve its movement stability.

Description

Technical Field

[0001] This utility model relates to the field of laminar flow hood technology, and in particular to a lifting laminar flow hood. Background Technology

[0002] Laminar flow hoods are devices that shield and isolate operators from products. Their main purpose is to prevent product contamination. Clean laminar flow hoods pass air through high-efficiency filters at a certain wind speed to form a uniform flow layer, making the clean air flow vertically in one direction, thereby ensuring that the high cleanliness required by the process is achieved in the work area. The existing laminar flow hoods are usually installed in two ways: suspended and floor-standing.

[0003] For example, Chinese utility model patent (CN214746299U) discloses a lifting laminar flow hood device, which describes: "It includes a laminar flow hood body, two vertically arranged driving components for driving the laminar flow hood body to rise and fall are symmetrically installed on the upper surface of the laminar flow hood body, a sliding plate is fixedly connected to the upper end of the driving component, the sliding plate is slidably installed in a T-slot, the T-slot is opened on the lower surface of the top plate, the top plate is a long strip structure, a connecting plate is fixed at the upper edge of the two parallel sides of the top plate, the lower surface of the connecting plate is provided with a mounting hole for inserting expansion bolts, a support plate is fixedly connected to the outer surface of the end of the driving component near the sliding plate, a threaded hole is opened on the lower surface of the support plate, and a clamping bolt is threaded into the threaded hole."

[0004] However, the aforementioned patent uses a suspended laminar flow hood and symmetrically installed electric push rods to drive the laminar flow hood to rise or fall. Since the suspended laminar flow hood itself is subject to downward force due to gravity, its stability is relatively weak when adjusting the height. Therefore, this application proposes a lifting laminar flow hood. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a lifting laminar flow hood to solve the problem that the suspension laminar flow hood itself has a downward force due to gravity, resulting in weak stability when adjusting the lifting and lowering.

[0006] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0007] The device includes a support base, an upper laminar flow hood, a mounting base plate fixed to the bottom of the laminar flow hood, hollow side frames fixed to both sides of the mounting base plate, a lifting guide frame located at the lower end of the mounting base plate and outside the laminar flow hood, two hollow side frames located outside the lifting guide frame and slidably connected to it, threaded rods rotatably connected to the inner sides of both sides of the lifting guide frame, inner pillars fixed at the center of the inner sides of the two hollow side frames, two threaded rods located inside the two inner pillars and threadedly connected to them, a drive assembly located inside the lifting guide frame and between the two threaded rods, L-shaped push plates fixed to both ends of the lower end of the lifting guide frame, the lower ends of the two L-shaped push plates located inside the support base and slidably connected to it, and a push assembly located inside the support base and between the two L-shaped push plates.

[0008] To achieve the above technical solution, the sliding connection between the hollow side frame and the lifting guide frame, and the sliding connection between the L-shaped push plate and the bearing base, can guide the movement of the laminar flow hood during its lifting and lowering motion, making its movement more stable and effectively improving the overall stability of the laminar flow hood during lifting and lowering adjustments.

[0009] In one embodiment of the present invention, both sides of the lifting guide are fixed with limiting side frames, and the two limiting side frames are symmetrically arranged.

[0010] In one embodiment of the present invention, each of the two hollow side frames is provided with a travel groove on the side that is far apart from each other, and the two limiting side frames are respectively located inside the two travel grooves and are slidably connected to the travel grooves.

[0011] In one embodiment of the present invention, the drive assembly includes a first dual-axis motor, the first dual-axis motor is fixed at the center of the inner side of the lifting guide, the two output ends of the first dual-axis motor are each fixed with a second bevel gear, the outer sides of the lower ends of the two threaded rods are each fixed with a first bevel gear, and the two second bevel gears are respectively meshed with the two first bevel gears.

[0012] In one embodiment of the present invention, the two L-shaped lifting plates are symmetrically arranged, and a first bearing is fixed on both sides of the inner side of each L-shaped lifting plate.

[0013] In one embodiment of the present invention, the lifting assembly includes a second dual-axis motor. The second dual-axis motor is fixed at the center of the inner side of the bearing base. Both output ends of the second dual-axis motor are fixed with drive studs. The two drive studs are symmetrically arranged. Each drive stud is threaded to a push guide seat on its outer side. Each push guide seat has two second shaft seats fixed at its upper end. Four connecting rods are rotatably connected between the four second shaft seats and the four first shaft seats.

[0014] In one embodiment of the present invention, two guide slides are fixed inside the bearing base and outside the second dual-axis motor, and the pusher seat is located outside the guide slides and is slidably connected to the guide slides.

[0015] The above technical solution enables the laminar flow hood to move in a segmented lifting motion, effectively expanding the lifting and adjustment range of the laminar flow hood. Furthermore, the sliding connection between the limiting side frame and the stroke slide groove further enhances the stability of the laminar flow hood's lifting motion, while limiting the lifting stroke of the laminar flow hood to prevent the hollow side frame from detaching from the lifting guide frame.

[0016] As described above, the lifting laminar flow hood of this utility model has the following beneficial effects:

[0017] This utility model, through its overall structural design, eliminates the traditional suspended installation method and the form of lifting driven by symmetrically installed electric push rods, thereby ensuring the stability of the laminar flow hood during lifting and lowering. Furthermore, the sliding connection between multiple components further guides the lifting and lowering movement of the laminar flow hood, thereby further improving its movement stability and facilitating the cleaning of areas with different cleanliness requirements at different vertical heights. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic representation of the overall structure of a liftable laminar flow hood disclosed in an embodiment of this utility model.

[0019] Figure 2 The image shown is a schematic diagram of the outer side of a laminar flow hood disclosed in an embodiment of this utility model.

[0020] Figure 3 The diagram shown is a schematic of a drive assembly for a lifting laminar flow hood disclosed in an embodiment of this utility model.

[0021] Figure 4 The diagram shown is a schematic diagram of the lower end of the lifting guide frame of a lifting laminar flow hood disclosed in an embodiment of this utility model.

[0022] Figure 5 The image shown is a schematic diagram of the inner side of the support base of a lifting laminar flow hood disclosed in an embodiment of this utility model.

[0023] Component designation explanation:

[0024] 1. Support base; 2. Laminar flow hood; 3. Mounting base plate; 4. Hollow side frame; 5. Lifting guide frame; 6. Limiting side frame; 7. Stroke groove; 8. Inner support column; 9. Threaded rod; 10. First bevel gear; 11. First dual-axis motor; 12. Second bevel gear; 13. L-shaped push plate; 14. First bearing seat; 15. Second dual-axis motor; 16. Drive stud; 17. Push guide seat; 18. Second bearing seat; 19. Connecting rod; 20. Guide slide column. Detailed Implementation

[0025] The following specific embodiments 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. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] Please see Figure 1-5 This utility model provides a lifting laminar flow hood, including a support base 1, a laminar flow hood body 2 at the upper end of the support base 1, and a mounting base plate 3 fixed at the bottom end of the laminar flow hood body 2. In order to support the laminar flow hood body 2 and drive the laminar flow hood body 2 to move up and down, hollow side frames 4 are fixed on both sides of the mounting base plate 3. A lifting guide 5 is set at the lower end of the mounting base plate 3 and outside the laminar flow hood body 2. The two hollow side frames 4 are located outside the lifting guide 5 and are slidably connected to the lifting guide 5. Threaded rods 9 are rotatably connected to the inner sides of both sides of the lifting guide 5. An inner support column 8 is fixed at the center of the inner side of the two hollow side frames 4. The two threaded rods 9 are located inside the two inner support columns 8 and are threadedly connected to the inner support columns 8. A drive assembly is set inside the lifting guide 5 and between the two threaded rods 9.

[0027] Furthermore, the drive assembly includes a first dual-axis motor 11, which is fixed at the center of the inner side of the lifting guide 5. The two output ends of the first dual-axis motor 11 are each fixed with a second bevel gear 12, and the outer sides of the lower ends of the two threaded rods 9 are each fixed with a first bevel gear 10. The two second bevel gears 12 are respectively meshed with the two first bevel gears 10.

[0028] Furthermore, in order to limit the lifting stroke of the laminar flow hood 2 and prevent the hollow side frame 4 from detaching from the lifting guide 5, limit side frames 6 are fixed on both sides of the lifting guide 5. The two limit side frames 6 are symmetrically arranged. The two hollow side frames 4 are provided with stroke grooves 7 on the side that is far away from each other. The two limit side frames 6 are located inside the two stroke grooves 7 and are slidably connected to the stroke grooves 7.

[0029] Furthermore, in order to further increase the lifting range of the laminar flow hood 2 and enable the laminar flow hood 2 to rise to a higher position, L-shaped push plates 13 are fixed at both ends of the lower end of the lifting guide 5. The lower ends of the two L-shaped push plates 13 are located inside the bearing base 1 and are slidably connected to the bearing base 1. The two L-shaped push plates 13 are symmetrically arranged. A first bearing seat 14 is fixed on both sides of the inner side of each L-shaped push plate 13. A push assembly is arranged inside the bearing base 1 and between the two L-shaped push plates 13.

[0030] Furthermore, the lifting assembly includes a second dual-axis motor 15. The second dual-axis motor 15 is fixed at the center of the inner side of the bearing base 1. Both output ends of the second dual-axis motor 15 are fixed with drive studs 16. The two drive studs 16 are symmetrically arranged. Each drive stud 16 is threadedly connected to a push guide seat 17 on its outer side. Each push guide seat 17 has two second shaft seats 18 fixed at its upper end. The four second shaft seats 18 are rotatably connected to the four first shaft seats 14 by four connecting rods 19.

[0031] Furthermore, when the second dual-axis motor 15 controls the drive stud 16 to rotate, in order to further guide the movement of the pusher seat 17 and thus ensure its movement stability, two guide slides 20 are fixed inside the bearing base 1 and outside the second dual-axis motor 15. The pusher seat 17 is located outside the guide slides 20 and is slidably connected to the guide slides 20.

[0032] Furthermore, when it is necessary to drive the laminar flow hood 2 to rise, the second dual-axis motor 15 can be started to drive the two drive studs 16 to rotate. The drive studs 16 are connected to the pusher seat 17 by threads, and the guide slide 20 is guided by the sliding guide of the pusher seat 17 to drive the two pusher seats 17 to move away from each other. With the support of the four connecting rods 19, the two L-shaped pusher plates 13 are lifted up, thereby driving the lifting guide frame 5 to move upward as a whole, realizing the first stage of the upward movement of the laminar flow hood 2.

[0033] Furthermore, the first dual-axis motor 11 is restarted to drive the two second bevel gears 12 to rotate. The meshing connection between the second bevel gears 12 and the first bevel gear 10 drives the two threaded rods 9 to rotate synchronously. In turn, the threaded connection between the threaded rods 9 and the inner support column 8 is used. With the sliding guidance of the hollow side frame 4 and the lifting guide 5, and the sliding guidance of the limiting side frame 6 and the travel groove 7, the laminar flow hood 2 and the mounting base 3 are easily moved upward as a whole. The upward travel of the laminar flow hood 2 and the mounting base 3 is limited, which effectively prevents the hollow side frame 4 and the lifting guide 5 from separating. Thus, after the laminar flow hood 2 has risen, it is convenient to clean the clean areas with different vertical heights.

[0034] This utility model, through its overall structural design, eliminates the traditional suspended installation method and the form of lifting driven by symmetrically installed electric push rods, thereby ensuring the stability of the laminar flow hood 2 during lifting and lowering. Furthermore, the sliding connection between multiple components further guides the lifting and lowering movement of the laminar flow hood 2, thereby further improving its movement stability and facilitating the cleaning of areas with different cleanliness requirements at different vertical heights by the laminar flow hood 2.

[0035] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A lifting laminar flow hood, characterized in that: The system includes a support base (1), with a laminar flow hood (2) at its upper end. A mounting base plate (3) is fixed to the bottom end of the laminar flow hood (2). Hollow side frames (4) are fixed to both sides of the mounting base plate (3). A lifting guide (5) is provided at the lower end of the mounting base plate (3) and outside the laminar flow hood (2). Both hollow side frames (4) are located outside the lifting guide (5) and are slidably connected to the lifting guide (5). Threaded rods (9) are rotatably connected to the inner sides of both sides of the lifting guide (5). An inner support column (8) is fixed at the center of the inner side. The two threaded rods (9) are located inside the two inner support columns (8) and are threadedly connected to the inner support columns (8). A drive assembly is provided inside the lifting guide (5) and between the two threaded rods (9). Both ends of the lower end of the lifting guide (5) are fixed with L-shaped push plates (13). The lower ends of the two L-shaped push plates (13) are located inside the bearing base (1) and are slidably connected to the bearing base (1). A push assembly is provided inside the bearing base (1) and between the two L-shaped push plates (13).

2. The lifting laminar flow hood according to claim 1, characterized in that: Both sides of the lifting guide (5) are fixed with limit side frames (6), and the two limit side frames (6) are symmetrically arranged.

3. A lifting laminar flow hood according to claim 2, characterized in that: The two hollow side frames (4) are provided with travel grooves (7) on the side that is far apart from each other. The two limiting side frames (6) are located inside the two travel grooves (7) and are slidably connected to the travel grooves (7).

4. A lifting laminar flow hood according to claim 1, characterized in that: The drive assembly includes a first dual-axis motor (11), which is fixed at the center of the inner side of the lifting guide (5). The two output ends of the first dual-axis motor (11) are each fixed with a second bevel gear (12). The outer sides of the lower ends of the two threaded rods (9) are each fixed with a first bevel gear (10). The two second bevel gears (12) are respectively meshed with the two first bevel gears (10).

5. A lifting laminar flow hood according to claim 1, characterized in that: The two L-shaped push plates (13) are symmetrically arranged, and a first bearing seat (14) is fixed on both sides of the inner side of each L-shaped push plate (13).

6. A lifting laminar flow hood according to claim 5, characterized in that: The lifting assembly includes a second dual-axis motor (15). The second dual-axis motor (15) is fixed at the center of the inner side of the bearing base (1). Both output ends of the second dual-axis motor (15) are fixed with drive studs (16). The two drive studs (16) are symmetrically arranged. Each drive stud (16) is threadedly connected to a pusher seat (17) on its outer side. Each pusher seat (17) has two second shaft seats (18) fixed at its upper end. The four second shaft seats (18) are rotatably connected to the four first shaft seats (14) with four connecting rods (19).

7. A lifting laminar flow hood according to claim 6, characterized in that: Two guide pins (20) are fixed inside the bearing base (1) and outside the second dual-axis motor (15). The pusher seat (17) is located outside the guide pins (20) and is slidably connected to the guide pins (20).

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