Dustproof filter screen for building ventilating duct

Abstract

The utility model discloses a building ventilating duct dustproof filter screen, which relates to the technical field of filter screens, and comprises a fixed frame, a dustproof filter screen is fixedly mounted in the fixed frame, a rotating shaft is rotatably connected in the fixed frame, a winding roller is fixedly sleeved on the surface of the rotating shaft, and the winding roller is fixedly sleeved on the surface of the rotating shaft. The surface of the winding roller is wound with dustproof cloth, one end of the dustproof cloth slidably penetrates through the fixing frame and extends to the outside of the fixing frame, and according to the building ventilation pipeline dustproof filter screen, through arrangement of the dustproof cloth, the side, with dust, of the dustproof filter screen is conveniently protected when the fixing frame and the dustproof filter screen are disassembled; and therefore, dust splashing caused when the fixing frame and the dustproof filter screen are detached from the interior of the ventilation pipeline is prevented, dust blocking is improved, dust is prevented from being accumulated in the ventilation pipeline, and accumulation of dust in the ventilation pipeline is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter screen technical field, especially in a kind of building ventilation pipeline dust filter screen. BACKGROUND

[0002] Air filter is the product of filtering indoor air dust particles, divided into coarse, medium, sub-high efficiency, high efficiency four types, according to the size of air volume installs different number of air filter in a pipeline, filter section is installed in central air conditioning system, filter indoor air dust particles into. To achieve the high quality of indoor air.

[0003] In order to facilitate the ventilation of building, and then need to install ventilation duct in the interior of building, however, in order to prevent dust into the ventilation duct, and then will install dust filter screen at one end of ventilation duct, however, some dust filter screen in use, will cause the blockage of filter screen, and then need to be disassembled and cleaned, when disassembling filter screen, due to the shaking of filter screen, and then easy to shake off the dust on filter screen, and then cause dust splashing or dust falling in the interior of ventilation duct, and then affect the effect of ventilation duct.

[0004] For the above problems, therefore, a kind of building ventilation pipeline dust filter screen is presented. UTILITY MODEL CONTENTS

[0005] The utility model is to at least solve one of the technical problems existing in the prior art, provide a kind of building ventilation pipeline dust filter screen, can solve the problem of background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of building ventilation pipeline dust filter screen, including fixed frame, dust filter screen is fixedly installed in the inside of fixed frame, rotatably connected with rotating shaft in the inside of fixed frame, fixed sleeve is connected with winding roller on the surface of rotating shaft, dust cloth is wound on the surface of winding roller, one end of dust cloth slidingly penetrates fixed frame and extends to the outside of fixed frame, torsion spring is movably connected on the surface of rotating shaft, one end of torsion spring close to winding roller is fixedly connected with winding roller, one end of torsion spring away from winding roller is fixedly connected with the inside of fixed frame, one end of dust cloth located outside fixed frame is fixedly installed with connecting plate.

[0007] Preferably, the shape of the lower end of the connecting plate is triangular.

[0008] Preferably, a clamping groove is formed on the surface of the connecting plate.

[0009] Preferably, a pull rod is slidably connected in the inside of the fixed frame, one end of the pull rod slidingly penetrates the fixed frame and extends to the outside of the fixed frame.

[0010] Preferably, the interior of the fixed frame is provided with a recess, and a limiting hole is formed in the interior of the recess.

[0011] Preferably, one end of the pull rod located in the interior of the limiting hole is fixedly provided with a limiting sliding plate which is slidingly connected in the interior of the limiting hole.

[0012] Preferably, an elastic spring is movably sleeved on the surface of the pull rod, one end of the elastic spring close to the limiting sliding plate is fixedly connected with the limiting sliding plate, and the other end of the elastic spring away from the limiting sliding plate is fixedly connected with the inner wall of the limiting hole.

[0013] Preferably, a limiting clamping block is fixedly arranged on the side of the limiting sliding plate close to the connecting plate, and the limiting clamping block is matched with the clamping groove.

[0014] Compared with the prior art, the building ventilation pipeline dust filter screen has the following beneficial effects:

[0015] (1) The building ventilation pipeline dust filter screen is convenient to use, and can prevent dust from splashing when the fixed frame and the dust filter screen are detached from the interior of the ventilation pipeline, improve the dust blocking effect, prevent dust from accumulating in the ventilation pipeline, and reduce the accumulation of dust in the ventilation pipeline.

[0016] (2) The building ventilation pipeline dust filter screen is convenient to use, and can prevent dust from splashing when the fixed frame and the dust filter screen are detached from the interior of the ventilation pipeline, improve the dust blocking effect, prevent dust from accumulating in the ventilation pipeline, and reduce the accumulation of dust in the ventilation pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further described below in combination with the drawings and examples:

[0018] Figure 1 It is a structural schematic view of the building ventilation pipeline dust filter screen of the utility model;

[0019] Figure 2 It is a structural schematic view of the building ventilation pipeline dust filter screen of the utility model; Figure 1 It is an enlarged schematic view of A in the utility model;

[0020] Figure 3 It is a structural schematic view of the building ventilation pipeline dust filter screen of the utility model;

[0021] Figure 4 It is a structural schematic view of the building ventilation pipeline dust filter screen of the utility model;

[0022] 1, fixed frame; 2, dust filter screen; 3, groove; 4, connecting plate; 5, clamping groove; 6, pull rod; 7, rotating shaft; 8, dust cloth; 9, winding roller; 10, torsion spring; 11, limiting hole; 12, elastic spring; 13, limiting slide plate; 14, limiting clamping block. DETAILED DESCRIPTION

[0023] 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.

[0024] In order to further understand the content of the present application, the present application will be described in detail in conjunction with the drawings.

[0025] Please refer to Figures 1-4 The present application provides a technical scheme: a dust filter screen for building ventilation pipeline, comprising a fixed frame 1, a dust filter screen 2 is fixedly installed inside the fixed frame 1, a rotating shaft 7 is rotatably connected inside the fixed frame 1, a winding roller 9 is fixedly sleeved on the surface of the rotating shaft 7, a dust cloth 8 is wound on the surface of the winding roller 9, one end of the dust cloth 8 slides through the fixed frame 1 and extends to the outside of the fixed frame 1, a torsion spring 10 is movably sleeved on the surface of the rotating shaft 7, one end of the torsion spring 10 close to the winding roller 9 is fixedly connected with the winding roller 9, the other end of the torsion spring 10 away from the winding roller 9 is fixedly connected with the inside of the fixed frame 1, a connecting plate 4 is fixedly installed at one end of the dust cloth 8 outside the fixed frame 1, and the lower end of the connecting plate 4 is triangular in shape.

[0026] Pulling the connecting plate 4 drives the dust cloth 8 to move, and then the winding roller 9 is driven to rotate by the dust cloth 8, so that the winding roller 9 and the rotating shaft 7 rotate, and then the torsion spring 10 deforms. When the connecting plate 4 is not pulled, the winding roller 9 and the rotating shaft 7 are reset by the torsion of the torsion spring 10, so that the dust cloth 8 is wound on the winding roller 9. Through the arrangement of the dust cloth 8, it is convenient to protect the side of the dust filter screen 2 with dust when the fixed frame 1 and the dust filter screen 2 are disassembled, so as to prevent dust from splashing when the fixed frame 1 and the dust filter screen 2 are disassembled from the inside of the ventilation pipeline, improve the blocking of dust, and prevent dust from accumulating in the ventilation pipeline, thereby reducing the accumulation of dust in the ventilation pipeline.

[0027] The surface of the connecting plate 4 is provided with a clamping groove 5, the inner part of the fixed frame 1 is slidably connected with a pull rod 6, one end of the pull rod 6 slidably penetrates through the fixed frame 1 and extends to the outside of the fixed frame 1, the inner part of the fixed frame 1 is provided with a limiting hole 11, the limiting hole 11 is in communication with the inner part of the groove 3, the end of the pull rod 6 located in the limiting hole 11 is fixedly installed with a limiting sliding plate 13, the limiting sliding plate 13 is slidably connected in the limiting hole 11, the surface of the pull rod 6 movably sleeved with an elastic spring 12, the end of the elastic spring 12 close to the limiting sliding plate 13 is fixedly connected with the limiting sliding plate 13, the end of the elastic spring 12 away from the limiting sliding plate 13 is fixedly connected with the inner wall of the limiting hole 11, the side of the limiting sliding plate 13 close to the connecting plate 4 is fixedly installed with a limiting clamping block 14, the limiting clamping block 14 is matched with the clamping groove 5.

[0028] When the connecting plate 4 moves downward, the connecting plate 4 enters the inner part of the groove 3, and then the triangular part at the bottom of the connecting plate 4 extrudes the semicircular end of the limiting clamping block 14, so that the limiting clamping block 14 and the limiting sliding plate 13 slide into the limiting hole 11 and extrude the elastic spring 12, and then when the limiting clamping block 14 coincides with the clamping groove 5, the limiting clamping block 14 and the limiting sliding plate 13 are reset by the elastic force of the elastic spring 12, so that the limiting clamping block 14 is clamped into the clamping groove 5, and then the fixing of the connecting plate 4 is completed, which is convenient for fixing the connecting plate 4 and the dust cloth 8, thereby improving the stability of the dust prevention of the dust cloth 8, and preventing the phenomenon of separation and causing dust splashing.

[0029] Pulling the pull rod 6, the limiting sliding plate 13 and the limiting clamping block 14 move, the limiting clamping block 14 is separated from the clamping groove 5, and then the connecting plate 4 slides out of the inner part of the groove 3, and then the fixing of the connecting plate 4 is released.

[0030] Working principle:

[0031] Pulling the connecting plate 4, the dust cloth 8 is moved, and then the winding roller 9 is rotated by the dust cloth 8, so that the winding roller 9 and the rotating shaft 7 are rotated, and then the torsional spring 10 is deformed, and when the connecting plate 4 is not pulled, the winding roller 9 and the rotating shaft 7 are reset by the torsional force of the torsional spring 10, so that the dust cloth 8 is wound on the winding roller 9, and then the dust cloth 8 is provided, which is convenient for protecting the side of the dust filter screen 2 with dust when the fixed frame 1 and the dust filter screen 2 are disassembled.

[0032] When the connecting plate 4 moves downwards, the connecting plate 4 enters the recess 3, the triangular bottom of the connecting plate 4 extrudes the semicircular end of the limiting block 14, the limiting block 14 and the limiting slide plate 13 slide into the limiting hole 11, the elastic spring 12 is extruded, the limiting block 14 and the limiting slide plate 13 are reset by the elastic force of the elastic spring 12, the limiting block 14 is clamped into the recess 5, and the fixing of the connecting plate 4 is completed.

[0033] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, any modification, equivalent replacement, improvement, etc., which are made within the spirit and principles of the present application, should be included in the scope of the present application.

Claims

1. A dust filter screen for building ventilation ducts, comprising a fixed frame (1), characterized in that: The inside of the fixed frame (1) is fixedly provided with a dustproof filter screen (2), the inside of the fixed frame (1) is rotatably connected with a rotating shaft (7), the surface of the rotating shaft (7) is fixedly sleeved with a winding roller (9), the surface of the winding roller (9) is wound with a dust cloth (8), one end of the dust cloth (8) slidably penetrates through the fixed frame (1) and extends to the outside of the fixed frame (1), the surface of the rotating shaft (7) movably sleeved with a torsion spring (10), one end of the torsion spring (10) close to the winding roller (9) is fixedly connected with the winding roller (9), the other end of the torsion spring (10) away from the winding roller (9) is fixedly connected with the inside of the fixed frame (1), and one end of the dust cloth (8) located outside the fixed frame (1) is fixedly provided with a connecting plate (4).

2. The dust filter screen for building ventilation ducts according to claim 1, characterized in that: The lower end of the connecting plate (4) is triangular.

3. The dust filter screen for building ventilation ducts according to claim 2, characterized in that: The surface of the connecting plate (4) is provided with a clamping groove (5).

4. The dust filter screen for building ventilation ducts according to claim 3, characterized in that: The inside of the fixed frame (1) is slidably connected with a pull rod (6), one end of the pull rod (6) slidably penetrates through the fixed frame (1) and extends to the outside of the fixed frame (1).

5. The dust filter screen for building ventilation ducts according to claim 4, characterized in that: The inside of the fixed frame (1) is provided with a groove (3), the inside of the groove (3) is provided with a limiting hole (11), and the limiting hole (11) is in communication with the inside of the groove (3).

6. The dust filter screen for building ventilation ducts according to claim 5, characterized in that: One end of the pull rod (6) located inside the limiting hole (11) is fixedly provided with a limiting sliding plate (13), and the limiting sliding plate (13) is slidably connected inside the limiting hole (11).

7. The dust filter screen for building ventilation ducts according to claim 6, characterized in that: The surface of the pull rod (6) movably sleeved with an elastic spring (12), one end of the elastic spring (12) close to the limiting sliding plate (13) is fixedly connected with the limiting sliding plate (13), and the other end of the elastic spring (12) away from the limiting sliding plate (13) is fixedly connected with the inner wall of the limiting hole (11).

8. The dust filter screen for building ventilation ducts according to claim 7, characterized in that: One side of the limiting sliding plate (13) close to the connecting plate (4) is fixedly provided with a limiting clamping block (14), and the limiting clamping block (14) is matched with the clamping groove (5).

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