Replaceable filter screen for laboratory ventilation device

Abstract

The utility model relates to the technical field of ventilation devices, and discloses a replaceable filter screen for a laboratory ventilation device.The replaceable filter screen comprises a ventilation pipe, a protection frame is installed on one side of the ventilation pipe in a pluggable mode, a fan is installed on the other side of the ventilation pipe, and a detachable filter screen is installed in the ventilation pipe; one side of the filter screen is connected with a pull rod through a rotating shaft; through cooperative use of the fixed rod, the limiting groove, the fixed frame, the first avoiding groove, a guide groove, a guide rod, a roller, a moving plate, a reset spring, a connecting rod and a slope groove, the fixed rod can be conveniently inserted into the fixed frame, the filter screen can be prevented from shaking in the ventilation process, and then the stability of the filter screen in practical use is improved; compared with the prior art, the filter screen has the advantages that the filter screen is convenient to mount or dismount, the mounting or dismounting process of the filter screen is smoother, and therefore a user can replace or clean the filter screen conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of ventilation devices, and in particular to a replacement filter for laboratory ventilation devices. Background Art

[0002] Ventilation equipment is an indispensable equipment in the laboratory. In order to ensure the air quality inside the laboratory, ventilation is required. For this reason, laboratories will use ventilation devices with air filtration structures for ventilation.

[0003] However, while the ventilation devices currently in use ensure the filtering effect, there are also certain problems. As the core component of the ventilation device, the cleaning and replacement of the filter is crucial. At present, most of the ventilation device filters on the market are installed with bolts, which makes the operation process cumbersome and time-consuming when the filter needs to be replaced frequently. Laboratory staff need to complete the removal, cleaning or replacement of the filter in a short time, and then reinstall it, which not only increases their daily workload, but may also affect the normal operation of the laboratory.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that most ventilation device filters on the market are installed with bolts, which makes the operation process cumbersome and time-consuming when the filter needs to be replaced frequently, and laboratory staff need to complete the removal, cleaning or replacement of the filter in a short time, and then reinstall it, which not only increases their daily workload but may also affect the normal operation of the laboratory, the present application provides a replacement filter for a laboratory ventilation device.

[0006] The present application provides a replacement filter for a laboratory ventilation device using the following technical solution:

[0007] A filter replacement device for a laboratory ventilation device comprises a ventilation pipe, one side of the ventilation pipe is equipped with a protective frame in a plug-in manner, and the other side is equipped with a fan, a detachable filter is installed inside the ventilation pipe, and one side of the filter is connected to a pull rod through a rotating shaft;

[0008] It also includes a fixing component, which is used to fix the filter screen inside the ventilation pipe, and the fixing component is connected to the ventilation pipe.

[0009] Preferably, the fixing assembly also includes two fixing rods fixed to one side of the filter screen, two fixing frames are fixed inside the ventilation duct, one side of the fixing frame is provided with a first avoidance groove for the fixing rod to pass through, a pair of guide grooves are provided on both sides of the fixing rod, the inside of the fixing frame is slidably connected with two guide rods through the guide grooves, the outer walls of the two guide rods are fixed with rollers, the outer walls of the fixing rods are also provided with two symmetrically distributed limiting grooves, a movable plate is also placed inside the fixed frame, the movable plate is also provided with a second avoidance groove for the fixing rod to pass through, a reset spring is fixed on one side of the movable plate, the reset spring is located between the movable plate and the inner wall of the fixed frame, and one end of the fixing rod is provided with two symmetrically distributed inclined grooves.

[0010] Preferably, two symmetrically distributed connecting rods are fixed to one side of the movable plate, and both of the two connecting rods pass through the fixed frame.

[0011] Preferably, the outer wall of the roller is coated with a rubber layer.

[0012] Preferably, the length of the connecting rod is greater than the length of the fixing frame.

[0013] Preferably, the fixing rod is made of metal.

[0014] Preferably, the outer wall of the pull rod is provided with anti-slip grooves.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] By using the fixed rod, the limit groove, the fixed frame, the first avoidance groove, the guide groove, the guide rod, the roller, the movable plate, the return spring, the connecting rod and the inclined groove in coordination, the fixed rod can be easily inserted into the interior of the fixed frame, and the filter net can be prevented from shaking during ventilation, thereby increasing the stability of the filter net in actual use; compared with the prior art, the filter net can be easily installed or disassembled, making the installation or disassembly process smoother, thereby facilitating users to replace or clean the filter net. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 is a schematic diagram of the cross-sectional structure of the ventilation pipe according to an embodiment of the present application;

[0019] Figure 3 is a schematic cross-sectional structure diagram of a fixed frame according to an embodiment of the present application;

[0020] Figure 4 It is a schematic diagram of the installation structure of the fixing rod in the embodiment of the present application;

[0021] Figure 5 This is an embodiment of the present application Figure 3 A is an enlarged structural diagram of FIG.

[0022] Explanation of the accompanying drawings: 1. ventilation duct; 2. protection frame; 3. filter screen; 4. pull rod; 5. fixing rod; 6. limiting groove; 7. fixing frame; 8. first avoidance groove; 9. guide groove; 10. guide rod; 11. roller; 12. movable plate; 13. return spring; 14. connecting rod; 15. inclined groove; 16. fan; 17. second avoidance groove. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1 -Attached Figure 5 This application is described in further detail.

[0024] The present application embodiment discloses a replacement filter for a laboratory ventilation device. Figure 1-Figure 5 A filter replacement device for a laboratory ventilation device includes a ventilation pipe 1, a protective frame 2 is installed on one side of the ventilation pipe 1 in a plug-in manner, a fan 16 is installed on the other side, a detachable filter 3 is installed inside the ventilation pipe 1, and a pull rod 4 is connected to one side of the filter 3 through a rotating shaft;

[0025] It also includes a fixing component, which is used to fix the filter 3 inside the ventilation pipe 1, and the fixing component is connected to the ventilation pipe 1; when in use, first, the detachable filter 3 is inserted into the ventilation pipe 1 so that it is in a suitable position, and it can also be connected to the rotating shaft on the filter 3 through the pull rod 4, so that the filter 3 can be easily adjusted or removed, so that the user can disassemble and clean the filter 3 conveniently. Subsequently, the protective frame 2 is installed on one side of the ventilation pipe 1 through plug-in installation, and the fan 16 is installed on the other side to ensure that the basic structure of the ventilation device is stable. In order to ensure the stability of the filter 3 inside the ventilation pipe 1, a fixing component is used. The fixing component is fixed, and the fixing component is connected to the ventilation pipe 1. The filter 3 can be firmly fixed in the desired position through simple operation. This design not only facilitates the installation and disassembly of the filter 3, but also ensures the stability and safety of the ventilation device during use. In addition, the ventilation device also has other advantages. For example, the design of the protective frame 2 can effectively prevent external impurities and dust from entering the interior of the ventilation pipe 1, thereby protecting the normal operation of the fan 16 and the filter 3. At the same time, the strong suction force of the fan 16 can ensure smooth air circulation in the laboratory, creating a comfortable and safe working environment for the experimenters.

[0026] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5, the fixing assembly also includes two fixing rods 5 fixed on one side of the filter screen 3, two fixing frames 7 are fixed inside the ventilation pipe 1, one side of the fixing frame 7 is provided with a first avoidance groove 8 for the fixing rod 5 to pass through, a pair of guide grooves 9 are provided on both sides of the fixing rod 5, the inside of the fixing frame 7 is slidably connected with two guide rods 10 through the guide grooves 9, the outer walls of the two guide rods 10 are fixed with rollers 11, the outer wall of the fixing rod 5 is also provided with two symmetrically distributed limiting grooves 6, a moving plate 12 is also placed inside the fixing frame 7, and a second avoidance groove 17 for the fixing rod 5 to pass through is also provided on the moving plate 12, a reset spring 13 is fixed on one side of the moving plate 12, and the reset spring 13 is located between the moving plate 12 and the inner wall of the fixing frame 7, and one end of the fixing rod 5 is provided with two symmetrically distributed inclined grooves 15; when in use, first, when the filter screen 3 needs to be fixed, the fixing rods on both sides of the filter screen 3 are moved. 5 penetrates the first avoidance groove 8, and uses the two inclined grooves 15 to push the rollers 11 to both sides. The rollers 11 can move along the guide grooves 9 through the guide rods 10 to prevent the fixed rod 5 from getting stuck. When the rollers 11 move, they will push the movable plate 12 to move and squeeze the reset spring 13 to compress it. When the fixed rod 5 is fully inserted into the interior of the fixed frame 7, it will penetrate the second avoidance groove 17. At the same time, the reset spring 13 will push the movable plate 12 to reset, so that the two rollers 11 can be embedded in the interior of the limiting groove 6, thereby fixing the filter screen 3, thereby limiting the further movement of the fixed rod 5. When the filter screen 3 needs to be replaced or cleaned, the filter screen 3 can be easily removed from the interior of the ventilation pipe 1 by the pull rod 4, and then a new filter screen 3 can be replaced or cleaned. This convenient replacement method not only improves the use efficiency of the laboratory ventilation device, but also reduces maintenance costs and time.

[0027] Reference Figure 5 Two symmetrically distributed connecting rods 14 are fixed on one side of the movable plate 12, and both connecting rods 14 penetrate the fixed frame 7, and the length of the connecting rod 14 is greater than the length of the fixed frame 7; this can increase the stability of the movable plate 12 when moving, making it less likely to shake.

[0028] Reference Figure 5 The outer wall of the roller 11 is coated with a rubber layer, which improves the wear resistance of the roller 11.

[0029] Reference Figure 5 The fixing rod 5 is made of metal, which improves the strength and stability of the fixing rod 5. The metal material has excellent mechanical properties and corrosion resistance, can withstand greater pressure and weight, and ensures that the fixing rod 5 is not easily deformed or damaged during long-term use.

[0030] Reference Figure 3 The outer wall of the pull rod 4 is provided with anti-skid patterns, which is convenient for users to pull and prevents users with sweaty hands from slipping during use.

[0031] The implementation principle of a filter replacement device for a laboratory ventilation device according to the embodiment of the present application is as follows: when in use, first, insert the detachable filter 3 into the ventilation pipe 1 so that it is in a suitable position, and can also be connected to the rotating shaft on the filter 3 through the pull rod 4, so that the filter 3 can be easily adjusted or removed, so that the user can disassemble and clean the filter 3 conveniently, and then install the protection frame 2 on one side of the ventilation pipe 1 through plug-in installation, and install the fan 16 on the other side to ensure that the basic structure of the ventilation device is stable, and the laboratory can be ventilated by starting the fan 16;

[0032] When the filter screen 3 needs to be fixed, the fixing rods 5 on both sides of the filter screen 3 are passed through the first avoidance groove 8, and the two inclined grooves 15 are used to push the rollers 11 to both sides. The rollers 11 can move along the guide grooves 9 through the guide rods 10 to prevent the fixing rods 5 from getting stuck. When the rollers 11 move, they will push the moving plate 12 to move and squeeze the reset spring 13 to compress it. When the fixing rod 5 is fully inserted into the interior of the fixing frame 7, it will pass through the second avoidance groove 17. At the same time, the reset spring 13 will push the moving plate 12 to reset, so that the two rollers 11 can be embedded in the limiting groove 6, thereby fixing the filter screen 3, thereby limiting the further movement of the fixing rod 5;

[0033] When the filter 3 needs to be replaced or cleaned, the filter 3 can be easily removed from the ventilation pipe 1 by the pull rod 4, and then a new filter 3 can be replaced or cleaned. This convenient replacement method not only improves the use efficiency of the laboratory ventilation device, but also reduces maintenance costs and time.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A filter replacement for a laboratory ventilation device, comprising a ventilation pipe (1), characterized in that: A protective frame (2) is installed on one side of the ventilation pipe (1) in a plug-in manner, and a fan (16) is installed on the other side; a detachable filter screen (3) is installed inside the ventilation pipe (1); and a pull rod (4) is connected to one side of the filter screen (3) via a rotating shaft; It also comprises a fixing component, the fixing component being used to fix the filter screen (3) inside the ventilation pipe (1), and the fixing component being connected to the ventilation pipe (1).

2. A replacement filter for a laboratory ventilation device according to claim 1, characterized in that: The fixing assembly further comprises two fixing rods (5) fixed to one side of the filter screen (3); two fixing frames (7) are fixed inside the ventilation pipe (1); one side of the fixing frame (7) is provided with a first avoidance groove (8) for the fixing rod (5) to pass through; a pair of guide grooves (9) are provided on both sides of the fixing rod (5); two guide rods (10) are slidably connected inside the fixing frame (7) through the guide grooves (9); rollers (11) are fixed to the outer walls of the two guide rods (10); the outer walls of the fixing rods (5) are further provided with two symmetrically distributed limiting grooves (6); a moving plate (12) is further placed inside the fixing frame (7); a second avoidance groove (17) for the fixing rod (5) to pass through is further provided on the moving plate (12); a return spring (13) is fixed on one side of the moving plate (12); the return spring (13) is located between the moving plate (12) and the inner wall of the fixing frame (7); and one end of the fixing rod (5) is provided with two symmetrically distributed inclined grooves (15).

3. A replacement filter for a laboratory ventilation device according to claim 2, characterized in that: Two symmetrically distributed connecting rods (14) are fixed to one side of the movable plate (12), and both connecting rods (14) pass through the fixed frame (7).

4. A replacement filter for a laboratory ventilation device according to claim 2, characterized in that: The outer wall of the roller (11) is coated with a rubber layer.

5. A replacement filter for a laboratory ventilation device according to claim 3, characterized in that: The length of the connecting rod (14) is greater than the length of the fixing frame (7).

6. A replacement filter for a laboratory ventilation device according to claim 2, characterized in that: The fixing rod (5) is made of metal.

7. A replacement filter for a laboratory ventilation device according to claim 1, characterized in that: The outer wall of the pull rod (4) is provided with anti-slip grooves.

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