Three-proofing filter for ventilation equipment

Abstract

The utility model discloses a three-proofing filter for ventilation equipment, which comprises a bottom cover, a shell is movably screwed on the outer side surface of the bottom cover through threads, a filtering mechanism is arranged in the shell, the filtering mechanism comprises a filter element, a fixed ring, a movable ring and a stress plate, the filter element is movably screwed on the middle part of the surface of the bottom cover through threads, and the fixed ring and the movable ring are movably screwed on the bottom cover. A fixed ring is fixedly arranged on the outer side of the filter element on the surface of the bottom cover, the outer side surface of the fixed ring is movably sleeved with a movable ring, and a stress plate is fixedly arranged on the outer side surface of the movable ring. According to the utility model, the use effect is good, the ventilation effect of the filter element is reduced when the filter element is blocked, so that the internal pressure of the shell is increased when air enters the air inlet end continuously, the movable ring can be pushed to move, and whether the blocking condition of the filter element is serious or not can be judged by observing the movement of the movable ring.

Description

Technical Field

[0001] The utility model relates to the technical field of three-proof filters, in particular to a three-proof filter for ventilation equipment. Background Art

[0002] In the prior art, filters are generally installed inside ventilation equipment to filter out impurities in the air. There are many types of such filter elements, which can effectively filter large particles, dust, mosquitoes, etc., ensure the quality of air while air enters the room from the outside, and prevent a large amount of dust and impurities from entering the room.

[0003] When the ventilation equipment filter in the prior art is in use, the entire filtering process relies on the filter element or filter bag. The filter element and filter bag are consumables and need to be replaced, but it is unknown when to replace them. Generally, they are fixed by time and replaced after the filter element has been used for a rated time. However, the environment in which each filter is used is different, and relying on time for replacement is unreliable. Therefore, to address this problem, a three-proof filter for ventilation equipment is needed to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a three-proof filter for ventilation equipment to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-proof filter for ventilation equipment, comprising a bottom cover, the outer surface of the bottom cover is provided with a shell by a threaded movable screw connection, a filtering mechanism is provided inside the shell, the filtering mechanism comprises a filter element, a fixed ring, a movable ring, and a force-bearing plate, a filter element is provided on the middle part of the bottom cover surface by a threaded movable screw connection, a fixing ring is fixedly provided on the outer side of the filter element on the bottom cover surface, a movable ring is movably sleeved on the outer surface of the fixed ring, and a force-bearing plate is fixedly provided on the outer surface of the movable ring.

[0006] Preferably, an air outlet pipe is fixedly provided on the outer surface of the bottom cover, and an air inlet pipe is fixedly provided on the outer surface of the shell. Air is ventilated into the interior of the shell through the air inlet pipe, and then the airflow is filtered through the filter element, finally enters the inner middle part of the filter element and is discharged through the exhaust pipe.

[0007] Preferably, a slide groove is fixedly provided on the outer surface of the shell, and a magnet is movably engaged inside the slide groove. The movable ring is made of iron metal material, and when the movable ring moves, the magnetic force can be used to drive the magnet to move inside the slide groove. In this way, by observing the position of the magnet, the movement of the movable ring can be judged. The more serious the filter element is blocked, the more the movable ring and the magnet will move toward the outlet pipe.

[0008] Preferably, the movable ring is sleeved on the outer surface of the fixed ring through an interference fit, so that the movable ring is fixed by utilizing the friction force of the filtering connection, and the movable ring will not be pushed to move when the air pressure does not reach a threshold value.

[0009] Preferably, the shell is made of plastic material, and the plastic material will not affect the transmission of magnetic force, thereby ensuring that the magnet can be driven to move normally when the movable ring moves.

[0010] Preferably, scale lines are provided inside the slide groove, and the scale lines can facilitate the staff to observe the moving distance of the magnet, so as to judge the blockage condition of the entire filter element.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. With the use of the device, the filter element of the utility model will gradually become clogged, and the ventilation effect will become worse and worse. The air intake pipe continuously blows air into the shell, which will increase the air pressure. This can squeeze the force plate, so that the movable ring moves to the right along the fixed ring, so that part of the filter element covered by the movable ring can be released. At this time, the filter element can work normally again, but with the use of the filter element, it will become clogged again. This repeated process will eventually cause the movable ring to move more and more to the right, and the movable ring will also drive the magnet to move when it moves. In this way, the staff can judge the movement of the movable ring by observing the position of the magnet. The more serious the blockage of the filter element is, the more the movable ring and the magnet move toward the outlet pipe. This can help the staff judge when the filter element needs to be replaced.

[0013] 2. The utility model has a simple structure when in use, and transmits power through magnetic force to drive the magnet to move, so there is no need to open holes on the outer surface of the shell, which can ensure the sealing of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a three-proof filter for ventilation equipment of the utility model;

[0015] Figure 2 This is a view of the internal structure of a three-proof filter housing for ventilation equipment of the utility model;

[0016] Figure 3 This is a cross-sectional view of a three-proof filter for ventilation equipment according to the utility model.

[0017] In the figure: 1. bottom cover; 2. shell; 3. filter element; 4. fixed ring; 5. movable ring; 6. force plate; 7. outlet pipe; 8. inlet pipe; 9. slide groove; 10. magnet. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 The utility model provides a technical solution: a three-proof filter for ventilation equipment, comprising a bottom cover 1, a shell 2 is arranged on the outer surface of the bottom cover 1 through a threaded movably screwed connection, a filtering mechanism is arranged inside the shell 2, the filtering mechanism comprises a filter element 3, a fixed ring 4, a movable ring 5, and a force-bearing plate 6, a filter element 3 is arranged on the middle part of the surface of the bottom cover 1 through a threaded movably screwed connection, a fixed ring 4 is fixedly arranged on the outer side of the filter element 3 on the surface of the bottom cover 1, a movable ring 5 is movably sleeved on the outer surface of the fixed ring 4, and a force-bearing plate 6 is fixedly arranged on the outer surface of the movable ring 5.

[0020] An air outlet pipe 7 is fixedly provided on the outer surface of the bottom cover 1, and an air inlet pipe 8 is fixedly provided on the outer surface of the shell 2. Air is ventilated into the shell 2 through the air inlet pipe 8, and then the air flow is filtered by the filter element 3, finally enters the inner middle part of the filter element 3 and is discharged through the exhaust pipe; a slide groove 9 is fixedly provided on the outer surface of the shell 2, and a magnet 10 is movably engaged inside the slide groove 9. The movable ring 5 is made of iron metal material. When the movable ring 5 moves, the magnet 10 can be driven to move inside the slide groove 9 by magnetic force. In this way, by observing the position of the magnet 10, the movement of the movable ring 5 can be judged. The more serious the blockage is, the more the movable ring 5 and the magnet 10 move toward the outlet pipe 7; the movable ring 5 is sleeved on the outer surface of the fixed ring 4 through an interference fit, so that the friction force of the filter connection is used to fix the movable ring 5, and the movable ring 5 will not be pushed to move when the air pressure does not reach the threshold; the shell 2 is made of plastic material, and the plastic material will not affect the transmission of magnetic force, so that it can be ensured that the magnet 10 can be driven to move normally when the movable ring 5 moves; the slide groove 9 is provided with scale lines inside, and the scale lines can facilitate the staff to observe the moving distance of the magnet 10, so as to judge the blockage of the entire filter element 3.

[0021] Working principle: When the device is used, air can be ventilated into the shell 2 through the air inlet pipe 8, and then the air flow is filtered through the filter element 3, and finally enters the inner middle part of the filter element 3 and is discharged through the exhaust pipe. As the device is used, the filter element 3 will gradually become blocked, and the ventilation effect will become worse and worse. The air inlet pipe 8 continuously blows air into the shell 2, which will increase the air pressure, so that the force plate 6 can be squeezed, so that the movable ring 5 moves to the right along the fixed ring 4, so that part of the filter element 3 covered by the movable ring 5 can be released, and the filter element 3 can work normally again. However, as the filter element 3 is used, it will become blocked again. This repetition will eventually make the movable ring 5 It moves more and more to the right, and the movable ring 5 will also drive the magnet 10 to move when it moves. In this way, the staff can judge the movement of the movable ring 5 by observing the position of the magnet 10. The more serious the blockage of the filter element 3 is, the more the movable ring 5 and the magnet 10 move toward the direction of the exhaust pipe 7. This can help the staff to judge when the filter element 3 needs to be replaced, thereby improving the use effect of the device. In addition, the device has a simple structure when used, and power is transmitted through magnetic force to drive the magnet 10 to move, so there is no need to open holes on the outer surface of the shell 2, which can ensure the sealing of the device. This is the working principle of a three-proof filter for ventilation equipment of the utility model.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-proof filter for ventilation equipment, comprising a bottom cover (1), characterized in that: The outer surface of the bottom cover (1) is provided with a housing (2) by means of a threaded movably screwed connection. A filtering mechanism is provided inside the housing (2), and the filtering mechanism comprises a filter element (3), a fixed ring (4), a movable ring (5), and a force-bearing plate (6). The filter element (3) is provided in the middle of the surface of the bottom cover (1) by means of a threaded movably screwed connection. The surface of the bottom cover (1) is fixedly provided with a fixed ring (4) on the outer side of the filter element (3). The outer surface of the fixed ring (4) is movably sleeved with a movable ring (5), and the outer surface of the movable ring (5) is fixedly provided with a force-bearing plate (6).

2. The three-proof filter for ventilation equipment according to claim 1, characterized in that: An air outlet pipe (7) is fixedly arranged on the outer surface of the bottom cover (1), and an air inlet pipe (8) is fixedly arranged on the outer surface of the shell (2).

3. The three-proof filter for ventilation equipment according to claim 1, characterized in that: A slide groove (9) is fixedly provided on the outer surface of the housing (2), a magnet (10) is movably engaged inside the slide groove (9), and the movable ring (5) is made of an iron metal material.

4. The three-proof filter for ventilation equipment according to claim 1, characterized in that: The movable ring (5) is sleeved on the outer surface of the fixed ring (4) via an interference fit.

5. The three-proof filter for ventilation equipment according to claim 1, characterized in that: The shell (2) is made of plastic material.

6. The three-proof filter for ventilation equipment according to claim 3, characterized in that: The slide groove (9) is provided with scale lines inside.

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