Novel flue check valve

A check valve and flue technology, applied in valve details, control valves, valve devices, etc., can solve problems such as serious accidents, oil fume and exhaust gas backflow into the room, environmental pollution, etc., to reduce maintenance costs, practical and elegant appearance, and seal. good effect

CN101539215AInactive Publication Date: 2009-09-23海宪华
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2009-09-23
Estimated Expiration
Not applicable · inactive patent

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    Figure 1
  • Figure 2
    Figure 2
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    Figure 3
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Abstract

The invention discloses a novel flue check valve which comprises an installing pipe, a circular base and a smokeproof cover plate. A fixing plate is arranged on the outer wall of the installing pipe, and the circular base is arranged in the inner cavity of the installing pipe. The sealing end surface of the circular base is slantwise arranged relatively to the axial plane of the installing pipe. The upper end of the smokeproof cover plate is rotationally connected with the upper end of the circular base through an articulated mechanism. Magnetic drawing devices are arranged on the smokeproof cover plate and the circular base. Cover plates are respectively arranged on the smokeproof cover plate and the circular base, and cover the magnetic attracting devices. A sealing cushion is arranged on the sealing contact surface between the smokeproof cover plate and the circular base. The novel flue check valve has the advantages of reasonable design, simple structure, good sealing effect, smooth gas exhaust, long service life, multiple functions and wide application, is particularly suitable for down-draught prevention of public flues of multi-floor or high-floor buildings, is favorable for environment protection, and has good economic benefit.
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Description

1. Technical field:

[0001] The invention relates to a one-way valve for preventing smoke from falling down in a flue, in particular to a novel flue check valve. 2. Background technology:

[0002] Today, with the improvement of living standards, people are paying more and more attention to the quality of life and the comfort and health of the home environment. However, the kitchen fume and the smell of the bathroom not only greatly destroy the warm atmosphere of our home, but also affect our health. cause negative impact. In order to make people's living areas have a clean air environment, housing developers almost at the same time use their brains on the exhaust gas of residential buildings. For example, when building multi-storey or high-rise residential buildings, public smoke exhaust ducts are preset in kitchens and bathrooms. And smoke exhaust outlet, when the residents move in, directly connect the range hood or other exhaust gas exhaust machine to the reserved smoke e...

Examples

Embodiment 1

[0022] Embodiment one: see Figure 1-Figure 3 , in the figure, 1-sealing gasket, 2-fixing plate, 3-ring base, 4-magnet, 5-cover plate, 6-sealing gasket, 7-cover plate, 8-magnet, 9-smoke-proof cover plate, 10 -installation pipe, 11-expansion screw tube, 12-connecting plate, 13-hinge shaft, 14-hinge seat, 15-chord plate.

[0023] The outer wall of the installation pipe 10 of the novel flue check valve is provided with a fixed plate 2, and the fixed plate 2 is provided with an annular sealing groove and a screw expansion pipe 11, and a sealing gasket 1 is arranged in the annular sealing groove. An annular base 3 is obliquely installed in the inner cavity of the installation pipe 10. The upper end of the annular base 3 is a chord plate 15, and the smoke-proof cover plate 9 is in the shape of a basin. The edge of the basin corresponds to the sealing end surface of the annular base 3. The body is located in the central hole of the annular base 3, and the sides of the basin correspo...

Embodiment 2

[0027] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that the magnetic attraction device is a magnet and an armature that attract each other, and the magnet and the armature are installed on the smoke-proof cover plate and the ring respectively. on the base.

Embodiment 3

[0028] Embodiment 3: This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that the magnetic attraction device is a magnet and an armature that attract each other, and the magnet and the armature are installed on the ring base and the smoke-proof cover respectively. board.