Hidden universal exhaust hood capable of ascending and descending

Abstract

The utility model discloses a liftable hidden universal exhaust hood which comprises a first pipe body, the bottom of the first pipe body is connected with a fourth pipe body through a rotating head, the outer end of the fourth pipe body is connected with a second pipe body, the liftable hidden universal exhaust hood further comprises a hood body, an installation base is installed above the top of the hood body, a third pipe body is connected with an inner groove of the installation base in a penetrating mode, and the third pipe body is connected with a second pipe body. The diameter of the third pipe body is smaller than that of the cover body, a sliding block is welded to the outer side of the left end of the first pipe body, and the outer side of the sliding block is slidably connected to the inner wall of the first pipe body. The hidden universal exhaust hood capable of lifting is provided with a sliding block, the sliding block is welded and mounted on the left side of a first pipe body, then the sliding block is mounted in a mounting cylinder in a sliding manner, and when the use depth of the first pipe body needs to be adjusted, the first pipe body only needs to be manually pulled to slide in the mounting cylinder in a penetrating manner, so that the use depth of the first pipe body is adjusted; and then the use depth of the first pipe body can be adjusted, the practicability is better, and more time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of universal air extraction hoods, and specifically relates to a liftable hidden universal air extraction hood. Background Technique

[0002] An air extraction hood is a device used to absorb and filter harmful gases and particulate matter, and is widely used in fields such as chemical industry, pharmaceuticals, optoelectronics, and laboratories. Its main function is to discharge harmful substances such as pollutants, harmful gases, and odors through a built-in fan, keeping the air in the environment fresh and clean, thereby ensuring the safety and health of the environment. An air extraction hood usually consists of parts such as a fan, a filter screen, a working surface, and a transparent cover body. Among them, the fan connects the air circulation inside and outside the hood through an air duct, forming a certain negative pressure state indoors, so as to realize the extraction of indoor waste gas and the supplement of fresh air from the outside. The top of the hood is equipped with an exhaust port, which can lead the indoor waste gas out of the hood and then discharge it to the outdoor environment through a discharge pipe;

[0003] A hidden universal air extraction hood is a special air extraction hood device, and its design features lie in its hidden installation method and the flexibility of universal adjustment. A hidden universal air extraction hood is usually installed on the top or inside the wall of a laboratory or work area. Through the hidden installation, the device does not occupy extra space when not in use, and at the same time does not affect the overall aesthetics of the laboratory or work area. This device is widely used in fields such as laboratories, hospitals, chemical industry, and pharmaceuticals, and can effectively improve the working environment and protect the health and safety of staff;

[0004] In the "Liftable Hidden Universal Air Extraction Hood" with the publication number CN220760490U, it includes: a storage board, which is used for the main hidden structure in the ceiling. The inner side of the upper end of the storage board is provided with a rotating through pipe, and the rotating through pipe extends to one side of the storage board. A first universal pipe, a second universal pipe, a first rotating extension pipe, and a second rotating extension pipe are sequentially connected to the rotating through pipe. The end of the second rotating extension pipe is provided with an umbrella-shaped air collecting hood. An opening and closing handle is provided outside the storage board to facilitate hooking it down. This liftable hidden universal air extraction hood can rotate in multiple directions, meet the air extraction requirements in all directions, and can also be fully folded. In addition, this universal air extraction hood adopts a hidden cover plate and a foldable air extraction port design, and can be completely stored in the ceiling for hiding, providing a larger laboratory space, avoiding the air extraction pipe from blocking the line of sight, and improving the experimental efficiency;

[0005] In the "Hidden Universal Air Extractor with Purification Function" with the published patent CN220658682U, it includes a storage groove, a flange plate, a U-shaped slot, a sealing plate, and a pull tab. For this hidden universal air extractor with purification function, there is a notch on the table board, and a storage groove adapted to it is arranged in the notch. A flange plate is arranged at the top of the storage groove, and the flange plate is fixedly connected to the table board and embedded in the table board. A U-shaped slot is arranged on the top surface of the flange plate, and a sealing plate adapted to it is arranged in the U-shaped slot. A pull tab is arranged on the sealing plate, and the sealing plate is frictionally limited by the flange plate. An air extractor assembly is arranged in the storage groove, and the air extractor assembly includes a first pipe body, a second pipe body, a third pipe body, a fourth pipe body, and a cover body. A connecting pipe is arranged on the cover body, and a purification mechanism is arranged between the connecting pipe and the other end of the fourth pipe body. A placement cavity adapted to the inner core body is arranged in the outer sleeve body, and the air extractor assembly is hidden and installed on the table board, and the air extractor assembly is stored, avoiding the problem of exposed installation;

[0006] When the above-mentioned hidden universal air extractor pumps and transports gas, because when the traditional air extractor moves up and down in cooperation with the pipe body, most of them move up and down by rotating the head in cooperation with the pipe body. However, the range of this up and down movement is limited, and its up and down range cannot be adjusted. It can only move up and down within a certain range, which is not convenient for the stable pumping and use of the universal air extractor in the later stage;

[0007] Therefore, we proposed a liftable hidden universal air extractor that can well solve the above problems. Summary of the Invention

[0008] The purpose of the present invention is to provide a liftable hidden universal air extractor to solve the problem proposed in the above background technology that in the current market, when the traditional air extractor moves up and down in cooperation with the pipe body, most of them move up and down by rotating the head in cooperation with the pipe body. However, the range of this up and down movement is limited, and its up and down range cannot be adjusted. It can only move up and down within a certain range, which is not convenient for the stable pumping and use of the universal air extractor in the later stage.

[0009] To achieve the above purpose, the present invention provides the following technical solution: A liftable hidden universal air extractor includes a first pipe body, the bottom of which is connected to a fourth pipe body through a rotating head, and the outer end of the fourth pipe body is connected to a second pipe body;

[0010] It further includes: a cover body, above the top of which an installation seat is installed, and a third pipe body is connected through a groove opened inside the installation seat, and the diameter of the third pipe body is smaller than the diameter of the cover body. A first pipe body, on the outer side of the left end of which a slider is welded and installed, and the outer side of the slider is slidably connected to the inner wall of the first pipe body.

[0011] Preferably, the installation cylinder is internally grooved and rotatably installed with a limiting block, and the limiting block is arc-shaped. A row of limiting grooves are sequentially connected to the outer side of the limiting block. At the same time, the row of limiting grooves are equally spaced on the outer side wall of the first pipe body. The installation cylinder is internally grooved with a return spring, and the outer end of the return spring is connected to the limiting block. The limiting block can be sequentially ejected into the row of limiting grooves by the elastic force of the return spring itself, and then the first pipe body can be slidably limited to avoid loosening and offset of the first pipe body during later use.

[0012] Preferably, the limiting block is internally grooved with a return spring, and a rotating rod is wound and connected to the inner side of the return spring. The outer end of the rotating rod extends through the outside of the installation cylinder. The elastic force of the return spring itself can be used to conveniently elastically reset the position of the rotating rod after rotation, so as to facilitate repeated operation and use later.

[0013] Preferably, the installation seat is provided with positioning clamping plates at both ends of its interior. Both positioning clamping plates are semi-circular. The third pipe body corresponds to the inner sides of the two positioning clamping plates. Anti-slip pads are attached to the inner sides of the two positioning clamping plates. The two anti-slip pads have the same structure. The inner sides of the two anti-slip pads are attached to the outer side wall of the third pipe body. The friction between the third pipe body and the installation seat can be increased through the two anti-slip pads to avoid loosening and falling off of the third pipe body during later use.

[0014] Preferably, the installation seat is internally grooved with compression springs at both ends. The outer ends of the two compression springs are both connected with pull rods. The two pull rods are slidably installed through the inner ends of the installation seat. At the same time, the inner ends of the two pull rods are connected with positioning clamping plates by screws. The elastic force of the two compression springs themselves can be used to conveniently elastically reset the positions of the two pull rods after extrusion movement, so as to facilitate repeated operation and use later.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] (1) A slider is provided. The slider is welded and installed on the left side of the first pipe body, and then the slider is slidably installed inside the installation cylinder. When the use depth of the first pipe body needs to be adjusted, only need to manually pull the first pipe body to slide through the inside of the installation cylinder, and then the use depth of the first pipe body can be adjusted. It has better practicability and is more time-saving and labor-saving;

[0017] (2) Further, a limiting block is rotatably installed by a reset spring through a groove inside the installation cylinder, and then a row of limiting grooves are sequentially connected to the outside of the limiting block. When pulling the first pipe body to move up and down, the reset spring will eject the limiting block into the row of limiting grooves in sequence through its own elastic force, and then the moving first pipe body can be slidably limited, avoiding the phenomenon of loosening and offset of the first pipe body during later use, and improving the use stability of the air extraction hood;

[0018] (3) Even further, a rotating rod is rotatably installed by a torsion spring through a groove inside the limiting block. When the first pipe body needs to be reset and moved, only need to manually rotate the rotating rod to drive the limiting block to separate from the limiting groove, and then the first pipe body can be quickly reset and moved. Finally, the elastic force of the torsion spring itself can be used to elastically reset the position of the rotated rotating rod for convenient repeated operation and use later;

[0019] (4) A positioning clamping plate is provided. Clamping plates are provided by grooving at both ends inside the mounting seat, and then the inner sides of the two clamping plates are adhesively connected to the outside of the third pipe body through anti-slip pads. The friction between the third pipe body and the mounting seat can be increased through the two anti-slip pads, avoiding the phenomenon of loosening and falling off of the third pipe body during later use, and improving the use stability of the air extraction hood;

[0020] (5) Further, pull rods are slidably installed through grooves on both sides above the hood body, and then positioning clamping plates are connected to the inner ends of the two pull rods by screws. When pulling the two pull rods to drive the two positioning clamping plates to move, the third pipe body and the mounting seat can be quickly disassembled and separated, and finally the elastic force of the two compression springs itself can be used to elastically reset the positions of the two moved pull rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 is a partial three-dimensional structural schematic diagram of the third pipe body and the hood body of the present invention;

[0023] Figure 3 is a partial main sectional structural schematic diagram of the installation cylinder and the first pipe body of the present invention;

[0024] Figure 4 is of the present invention Figure 3 is an enlarged structural schematic diagram at A in;

[0025] Figure 5 is a partial top sectional structural schematic diagram of the third pipe body and the mounting seat of the present invention;

[0026] Figure 6Schematic diagram of the partial front view structure of the installation cylinder and the first pipe body of the present utility model;

[0027] Figure 7 The present utility model Figure 5 Enlarged structure schematic diagram at position B in it.

[0028] In the figure: 1. Installation cylinder; 2. First pipe body; 3. Rotating head; 4. Second pipe body; 5. Third pipe body; 6. Installation seat; 7. Cover body; 8. Slide block; 9. Limit block; 10. Limit groove; 11. Return spring; 12. Rotating rod; 13. Torsion spring; 14. Positioning clamping plate; 15. Anti-slip pad; 16. Pull rod; 17. Extrusion spring; 18. Fourth pipe body. Specific implementation mode

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] The present utility model provides the following technical solutions:

[0031] Embodiment 1, to solve the problem that the depth adjustment of the existing cover body 7 is limited and its lifting range cannot be adjusted, it discloses:

[0032] The first pipe body 2, its bottom is connected to the fourth pipe body 18 through a rotating head 3, and the outer end of the fourth pipe body 18 is connected to the second pipe body 4;

[0033] It further includes: a cover body 7, an installation seat 6 is installed above its top, and a third pipe body 5 is connected through a slot inside the installation seat 6, and the diameter of the third pipe body 5 is smaller than the diameter of the cover body 7. The first pipe body 2, a slide block 8 is welded and installed on the outer side of its left end, and the outer side of the slide block 8 is slidably connected to the inner wall of the first pipe body 2.

[0034] The installation cylinder 1, a limit block 9 is rotatably installed in the slot inside it, and the limit block 9 is in an arc shape, and a row of limit grooves 10 are sequentially connected to the outer side of the limit block 9. At the same time, a row of limit grooves 10 are evenly arranged on the outer side wall of the first pipe body 2. The installation cylinder 1, a return spring 11 is arranged in the slot inside it, and the outer end of the return spring 11 is connected to the limit block 9.

[0035] Such as Figures 1-3As shown, when it is necessary to adjust the use depth of the cover body 7, only need to pull the first pipe body 2 to penetrate and slide inside the installation cylinder 1, then the use depth of the cover body 7 can be adjusted. When pulling the first pipe body 2 to move its position, the reset spring 11 will pop the limit block 9 into a row of limit slots 10 in sequence through its own elastic force, and then the first pipe body 2 can be slidably limited to avoid the phenomenon of loosening and deviation of the first pipe body 2 during later use, improving the use stability of the cover body 7.

[0036] Embodiment 2, different from Embodiment 1, can perform a quick reset movement and reset on the first pipe body 2, and discloses:

[0037] The limit block 9 has a reset spring 11 arranged in a groove inside it, and a rotating rod 12 is wound and connected to the inner side of the reset spring 11, and the outer end of the rotating rod 12 penetrates and extends to the outside of the installation cylinder 1.

[0038] As Figures 1-4 shown, when it is necessary to perform a reset movement on the position of the first pipe body 2 after use, only need to manually rotate the rotating rod 12 to drive the limit block 9 to separate from the limit slot 10, and then the first pipe body 2 after use can be reset for use. Finally, the elastic force of the torsion spring 13 itself can be used to elastically reset the position of the rotating rod 12 after rotation, facilitating the repeated operation and use of the rotating rod 12 in the later stage.

[0039] Embodiment 3, different from Embodiment 2, can perform a quick disassembly, installation and replacement operation on the third pipe body 5 and the installation seat 6, and discloses:

[0040] The installation seat 6 has positioning clamping plates 14 arranged at both ends inside it, and both positioning clamping plates 14 are semicircular in shape, and the third pipe body 5 corresponds to the inner sides of the two positioning clamping plates 14. Anti-slip pads 15 are attached to the inner sides of the two positioning clamping plates 14, and the two anti-slip pads 15 have the same structure, and the inner sides of the two anti-slip pads 15 are attached to the outer wall of the third pipe body 5. The installation seat 6 has extrusion springs 17 arranged in grooves at both ends inside it, and the outer ends of the two extrusion springs 17 are connected to pull rods 16, and the two pull rods 16 are all installed through sliding in the two ends inside the installation seat 6, and at the same time, the inner ends of the two pull rods 16 are connected to the positioning clamping plates 14 by screws.

[0041] As Figures 1-7As shown, when it is necessary to quickly disassemble and replace the third pipe body 5 and the mounting seat 6, just manually pull the two pull rods 16 to drive the two positioning clamping plates 14 to move. At this time, the third pipe body 5 can be separated from the mounting seat 6, and then the third pipe body 5 and the mounting seat 6 can be quickly disassembled and replaced. Subsequently, the elastic force of the two compression springs 17 can be used to connect the two moved positioning clamping plates 14 to the outer wall of the third pipe body 5 through the anti-slip pads 15. The friction between the third pipe body 5 and the mounting seat 6 can be increased through the two anti-slip pads 15, avoiding the phenomenon that the third pipe body 5 loosens and falls off during later use, and improving the use stability of the cover body 7.

[0042] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A liftable hidden universal exhaust hood, comprising a first tube body (2), the bottom of which is connected to a fourth tube body (18) via a rotating head (3), and the outer end of the fourth tube body (18) is connected to the second tube body (4); It is characterized in that Also includes: The cover body (7) has a mounting seat (6) mounted on the top thereof, and the inner groove of the mounting seat (6) is penetrated and connected with a third tube body (5), and the diameter of the third tube body (5) is smaller than the diameter of the cover body (7); A first tube body (2), a slider (8) is welded and installed on the outer side of the left end thereof, and the outer side of the slider (8) is slidably connected to the inner wall of the first tube body (2); An installation cylinder (1) is provided with a groove inside which a limit block (9) is rotatably installed, and the limit block (9) is in an arc shape, and a row of limit grooves (10) are sequentially connected to the outer side of the limit block (9), and the row of limit grooves (10) are all arranged at equal intervals on the outer side wall of the first tube body (2); The mounting cylinder (1) has a groove inside which a return spring (11) is arranged, and the outer end of the return spring (11) is connected to a limit block (9); The limit block (9) has a groove inside which a return spring (11) is arranged, and a rotating rod (12) is wound around the inner side of the return spring (11), and the outer end of the rotating rod (12) extends through and extends to the outer side of the mounting tube (1).

2. The liftable hidden universal exhaust hood according to claim 1, characterized in that: The mounting seat (6) has positioning clamps (14) disposed at both ends thereof, and the two positioning clamps (14) are both semicircular in shape, and the inner sides of the two positioning clamps (14) correspond to the third tube body (5).

3. The liftable hidden universal exhaust hood according to claim 2, characterized in that: The inner sides of the two positioning clamps (14) are both fitted with anti-skid pads (15), and the two anti-skid pads (15) have the same structure, and the inner sides of the two anti-skid pads (15) are fitted with the outer side wall of the third tube body (5).

4. The liftable hidden universal exhaust hood according to claim 1, characterized in that: The mounting seat (6) has grooves at both ends thereof and is provided with extrusion springs (17), and the outer ends of the two extrusion springs (17) are connected to pull rods (16), and the two pull rods (16) are slidably installed at the inner ends of the mounting seat (6), and the inner ends of the two pull rods (16) are connected to positioning clamps (14) by screws.

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