Negative pressure laboratory ventilation structure

Abstract

The utility model belongs to the technical field of building ventilation structures, and particularly discloses a negative pressure laboratory ventilation structure which comprises a mounting seat, a filter screen structure and a locking mechanism, and a mounting groove is formed in the middle of the mounting seat; a positioning block is arranged on the side edge of the mounting groove, and a locking insertion hole is formed in the positioning block; the filter screen structure comprises a lantern ring and a filter screen body, the filter screen body is fixed to the lantern ring, a positioning groove matched with the positioning block is formed in the side edge of the lantern ring, and a through hole matched with the locking insertion hole is formed in the positioning groove; the locking mechanism comprises a U-shaped support, a connecting plate, a sliding block, a spring, an inserting block, a pull rod and a pull plate, the connecting plate is pulled to drive the inserting block to retreat from the locking inserting hole, fixing of the filter screen structure can be canceled, and then the filter screen structure can be directly detached from the mounting groove; during mounting, the filter screen structure is sleeved on the mounting groove again, then the connecting plate is driven to move back by utilizing resilience force of the spring, and the inserting block is inserted into the locking inserting hole again.

Description

TECHNICAL FIELD

[0001] The utility model relates to building ventilation technical field, concretely is a negative pressure laboratory ventilation structure. BACKGROUND

[0002] So-called negative pressure is that the air pressure in the laboratory is lower than the normal air pressure of the environment outside the laboratory, a certain pressure difference is generated between the inside and outside of the laboratory, thereby controlling the direction of gas flow, and ensuring that the gas flow from outside the laboratory to the inside of the laboratory, which is in the negative pressure laboratory.

[0003] The exhaust device is generally arranged in the negative pressure laboratory, and in order to avoid the dust into the inside of the exhaust device, the filter screen is arranged on the device, but the filter screen is prone to be blocked in the use process, therefore, some people think of setting the scraper to scrape the dust on the filter screen, such as the Chinese utility model patent with the announcement number CN214406335U, which specifically discloses a negative pressure laboratory exhaust device.

[0004] However, it is found that the filter screen needs to be regularly removed for maintenance after long-term use, and the filter screen is mostly fixed by bolts, which leads to the difficulty in disassembling and maintaining the filter screen. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a negative pressure laboratory ventilation structure to solve the problems in the background art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a negative pressure laboratory ventilation structure, comprising a mounting seat, a filter screen structure and a locking mechanism, the mounting seat is provided with a mounting groove in the middle, the filter screen mechanism is arranged outside the mounting groove, and the locking mechanism is arranged on the side of the filter screen mechanism.

[0007] The mounting groove is provided with a positioning block on the side, and the positioning block is provided with a locking hole;

[0008] The filter screen structure comprises a sleeve ring and a filter screen body, the filter screen body is fixed on the sleeve ring, the sleeve ring is provided with a positioning groove matched with the positioning block on the side, and the positioning groove is provided with a through hole matched with the locking hole on the positioning groove;

[0009] The locking mechanism comprises a U-shaped support, a connecting plate, a sliding block, a spring, an insertion block, a pull rod and a pull plate, the U-shaped support is fixed outside the positioning groove, the connecting plate is arranged inside the U-shaped support, a sliding groove is formed in the inner side wall of the U-shaped support, the sliding block is slidingly connected in the sliding groove, the end of the connecting plate is fixed on the sliding block, the spring is located in the sliding groove and the two ends of the spring are connected with the sliding block and the inner wall of the sliding groove respectively, the insertion block and the pull rod are fixed on the side edges of the connecting plate respectively, the insertion block passes through the through groove and is inserted into the locking insertion hole to fix the filter screen structure, and the pull rod penetrates through the U-shaped support and is connected with the pull plate.

[0010] By pulling the connecting plate, the connecting plate drives the insertion block to exit from the locking insertion hole, so that the fixation of the filter screen structure is cancelled, and then the filter screen structure can be directly dismounted from the mounting groove; during installation, the filter screen structure is sleeved on the mounting groove again, and then the spring rebound force drives the connecting plate to move back, so that the insertion block is inserted into the locking insertion hole again.

[0011] Preferably, a mounting frame is arranged on the inner side of the mounting groove, and a ventilation fan is arranged on the mounting frame to improve the ventilation effect.

[0012] Preferably, a fixing hole is formed in the position close to the corner of the mounting seat, and the mounting seat is fixed at the ventilation port of the negative pressure laboratory by cooperating with self-tapping.

[0013] Preferably, a plurality of air permeable pipes are arranged on the filter screen body, and sealing plugs are arranged at the ends of the air permeable pipes, so that the air permeable pipes are used for placing deodorants.

[0014] Preferably, a pull ring is arranged on the pull plate to facilitate pulling the pull plate.

[0015] Preferably, the U-shaped support is connected with the positioning groove through bolts to realize detachable installation.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a locking mechanism is fixed filter screen structure, needs to remove, only pull the connecting plate, the insertion block that sets up on the connecting plate is pulled out from the locking insertion hole, then the fixation of filter screen structure can be cancelled, so that the sleeve ring in the filter screen structure is directly taken off from the mounting groove, and the operation is simple and easy to understand, so as to facilitate the later dismounting maintenance, improve the practicality of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional structure schematic of the utility model Figure 1 ;

[0019] Figure 2 It is the three-dimensional structure schematic of the utility model Figure 2 ;

[0020] Figure 3 is a schematic view of the mounting seat structure of the present application;

[0021] Figure 4 is a schematic view of the filter screen structure of the present application;

[0022] Figure 5 is a schematic view of the locking mechanism structure of the present application.

[0023] In the drawing: 1, mounting seat; 101, mounting groove; 1011, positioning block; 1012, locking jack; 102, fixing hole; 2, filter screen structure; 201, collar; 2011, positioning groove; 2012, through hole; 202, filter screen main body; 2021, air pipe; 2022, sealing plug; 3, locking mechanism; 301, V-shaped support; 3011, sliding groove; 302, connecting plate; 303, sliding block; 304, spring; 305, plug block; 306, pull rod; 307, pull plate; 3071, pull ring; 4, mounting frame; 401, ventilation fan. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0027] Please refer to Figures 1-5The utility model provides a technical scheme: a negative pressure laboratory ventilation structure, including mounting seat 1, filter screen structure 2 and locking mechanism 3, the mounting seat 1 middle is provided with installation groove 101, filter screen mechanism sets up the outside of installation groove 101, and locking mechanism 3 sets up in the side of filter screen mechanism.

[0028] Further, the installation groove 101 side is provided with a positioning block 1011, and the positioning block 1011 is provided with a locking jack 1012.

[0029] Further, the filter screen structure 2 includes a sleeve ring 201 and a filter screen body 202, the filter screen body 202 is fixed on the sleeve ring 201, the sleeve ring 201 side is provided with a positioning groove 2011 matched with the positioning block 1011, and the positioning groove 2011 is provided with a through hole 2012 matched with the locking jack 1012.

[0030] Further, the locking mechanism 3 includes a U-shaped support 301, a connecting plate 302, a sliding block 303, a spring 304, an insertion block 305, a pull rod 306 and a pull plate 307, the U-shaped support 301 is fixed outside the positioning groove 2011, the connecting plate 302 is arranged inside the U-shaped support 301, the inner side wall of the U-shaped support 301 is provided with a sliding groove 3011, the sliding block 303 is slidably connected in the sliding groove 3011, the end of the connecting plate 302 is fixed on the sliding block 303, the spring 304 is located in the sliding groove 3011, and the two ends of the spring 304 are connected with the sliding block 303 and the inner wall of the sliding groove 3011 respectively, the insertion block 305 and the pull rod 306 are fixed on the side of the connecting plate 302 respectively, the insertion block 305 passes through the through groove and is inserted in the locking jack 1012 to fix the filter screen structure 2, and the pull rod 306 penetrates the U-shaped support 301 and is connected with the pull plate 307.

[0031] By pulling the connecting plate 302, the connecting plate 302 drives the insertion block 305 to exit from the locking jack 1012, so that the fixation of the filter screen structure 2 can be cancelled, and then the filter screen structure 2 can be directly disassembled from the installation groove 101; when installing, the filter screen structure 2 is sleeved on the installation groove 101 again, then the spring 304 is used to drive the connecting plate 302 to move back, and the insertion block 305 is inserted in the locking jack 1012 again.

[0032] Further, the inside of the installation groove 101 is provided with a mounting frame 4, and the mounting frame 4 is provided with a ventilation fan 401, and the ventilation effect is improved through the ventilation fan 401.

[0033] Further, the mounting seat 1 is provided with a fixing hole 102 near the corner, and the fixing hole 102 is used for fixing the mounting seat 1 at the ventilation opening of the negative pressure laboratory by cooperating with self-tapping.

[0034] Further, a plurality of air vents 2021 are arranged on the filter screen body 202, and sealing plugs 2022 are arranged at the ends of the air vents 2021, and the air vents 2021 are used for placing deodorants.

[0035] Further, a pull ring 3071 is arranged on the pull plate 307 to facilitate pulling the pull plate 307.

[0036] Further, the U-shaped support 301 is connected with the positioning groove 2011 through bolts to realize detachable installation.

[0037] In summary, when the ventilation structure is used, the ventilation fan 401 is used for exhaust, the filter screen body 202 is used for filtering dust and impurities, when the filter screen structure 2 needs to be removed for maintenance, the pull ring 3071 is held and the pull plate 307 is pulled, the pull plate 307 drives the connecting plate 302 to move through the pull rod 306, the connecting plate 302 drives the sliding block 303 to slide in the sliding groove 3011, the sliding block 303 extrudes the spring 304, the spring 304 is deformed and contracted, the connecting plate 302 drives the plug block 305 to exit from the locking plug hole 1012, the fixing of the filter screen structure 2 is cancelled, the sleeve ring 201 is removed from the installation groove 101, and the filter screen structure 2 is removed.

[0038] It is worth noting that: the whole device is controlled by the total control button, and since the control button is matched with common devices, it belongs to the existing mature technology, and the electrical connection relationship and the specific circuit structure are not described here.

[0039] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A negative pressure laboratory ventilation structure, characterized by: Including mounting seat (1), filter screen structure (2) and locking mechanism (3), the mounting seat (1) is provided with installation groove (101) in the middle, the filter screen mechanism is arranged outside the installation groove (101), and the locking mechanism (3) is arranged at the side of the filter screen mechanism; The installation groove (101) is provided with a positioning block (1011), and the positioning block (1011) is provided with a locking insertion hole (1012); The filter screen structure (2) includes a sleeve ring (201) and a filter screen body (202), the filter screen body (202) is fixed on the sleeve ring (201), the sleeve ring (201) is provided with a positioning groove (2011) matched with the positioning block (1011), and the positioning groove (2011) is provided with a through hole (2012) matched with the locking insertion hole (1012); The locking mechanism (3) includes a U-shaped support (301), a connecting plate (302), a sliding block (303), a spring (304), an insertion block (305), a pull rod (306) and a pull plate (307), the U-shaped support (301) is fixed outside the positioning groove (2011), the connecting plate (302) is arranged inside the U-shaped support (301), the inner side wall of the U-shaped support (301) is provided with a sliding groove (3011), the sliding block (303) is slidably connected in the sliding groove (3011), and the end of the connecting plate (302) is fixed on the sliding block (303), the spring (304) is located in the sliding groove (3011), and the two ends of the spring (304) are connected with the sliding block (303) and the inner wall of the sliding groove (3011) respectively, the insertion block (305) and the pull rod (306) are fixed on the side of the connecting plate (302) respectively, the insertion block (305) passes through the through groove and is inserted in the locking insertion hole (1012) to fix the filter screen structure (2), and the pull rod (306) penetrates the U-shaped support (301) and is connected with the pull plate (307).

2. The negative pressure laboratory vent structure of claim 1, wherein: The installation groove (101) is provided with a mounting frame (4) on the inner side, and the mounting frame (4) is provided with a ventilation fan (401).

3. The negative pressure laboratory vent structure of claim 1, wherein: The mounting seat (1) is provided with a fixing hole (102) near the corner.

4. The negative pressure laboratory vent structure of claim 1, wherein: The filter screen body (202) is provided with a plurality of air pipes (2021), and the end of the air pipe (2021) is provided with a sealing plug (2022).

5. The negative pressure laboratory vent structure of claim 1, wherein: The pull plate (307) is provided with a pull ring (3071).

6. The negative pressure laboratory vent structure of claim 1, wherein: The U-shaped support (301) is connected with the positioning groove (2011) through bolts.

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