Novel check valve of range hood

Abstract

The utility model relates to the technical field of check valves, and particularly discloses a novel range hood check valve, which comprises a check valve main body, a base, a reducing ring, a pull ring, an inner core and a valve plate, the base and the reducing ring are respectively arranged at the upper end and the lower end of the check valve main body, the inner core is detachably arranged on the inner side of the check valve main body, and the pull ring is arranged on the inner side of the check valve main body. The valve plate is rotationally installed on the inner side of the bottom of the inner core, a drawing through hole is formed in the side face of the check valve body, and the drawing ring is arranged on the inner side of the drawing through hole and connected with the inner core in a buckled mode. The inner core is detachably mounted on the inner side of the check valve body, the inner core can be pulled out by pulling the pulling ring after long-term use, and then the valve plate is driven to be pulled out, so that the inner core and the valve plate are detached and replaced, the check valve is more convenient to use, and the later maintenance cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a novel check valve for range hoods. Background Art

[0002] Cooking in the kitchen typically produces a large amount of fumes, which directly impacts people's living environment and health. Range hoods are an important tool for improving the kitchen environment, purifying the indoor air by extracting and exhausting cooking fumes. Existing range hood check valves typically consist of a cylindrical housing with a valve disc inside. The valve disc rotates coaxially. When the range hood is turned on, the pressure generated by the fan opens the valve disc. When the range hood is turned off, the spring between the valve discs and the weight of the valve disc closes the valve disc.

[0003] For example, Chinese utility model patent application number CN202320377471.9 discloses a range hood check valve with adjustable valve port size. The valve valve comprises a flange connection port, a retaining ring, and a blowpipe. A valve pipe is mounted on the side of the flange connection port, and a valve core is rotatably mounted on the inner side of the valve pipe. The retaining ring is fixedly mounted on the inner side wall of the valve pipe, and the side of the retaining ring is interconnected with the side of the connecting valve block via an elastic airbag. The blowpipe is connected to the side of the valve pipe, and a threaded adjustment rod is rotatably connected to the side of the valve pipe. A driving bevel gear is fixedly mounted on the upper end of the threaded adjustment rod. The upper and lower ends of the inner side of the valve pipe are fixed to a transmission bearing via mounting brackets, and a transmission shaft is connected to the interior of the transmission bearing. This range hood check valve with adjustable valve port size is equipped with a connection valve port size adjustment structure and an assembly seal adjustment structure, which improves the assembly and application efficiency of the check valve.

[0004] Another example is a Chinese utility model patent application numbered CN202320718401.5, which discloses a check valve, a range hood, and an integrated stove, comprising a valve body and a valve disc assembly, wherein the valve body is provided with a smoke exhaust chamber, the valve disc assembly is arranged in the smoke exhaust chamber and closes or opens the smoke exhaust chamber, the check valve further comprising an electrically driven telescopic member for opening the valve disc assembly, the valve disc assembly comprising a left valve disc body and a right valve disc body rotatably connected to the inner wall of the smoke exhaust chamber, the electrically driven telescopic member being at least partially located below the valve disc assembly and contacting at least a portion of the left valve disc body and the right valve disc body, respectively, the electrically driven telescopic member being configured to extend when power is applied to push the left valve disc body and the right valve disc body upward to open the smoke exhaust chamber, and the electrically driven telescopic member being configured to retract when power is off and allow the left valve disc body and the right valve disc body to close the smoke exhaust chamber under their own weight. This utility model can improve the reliability of the check valve, and the valve disc assembly can still be used normally when power is off or damaged.

[0005] However, after long-term use, the existing check valve will have oil stains and other dirt on the valve plate, and the valve plate cannot be disassembled and replaced. The entire check valve needs to be disassembled and replaced, which has high maintenance costs and is inconvenient to use. Utility Model Content

[0006] The technical problem to be solved by the present invention is that, in response to the above-mentioned defects of the prior art, a new type of check valve for range hoods is provided. By detachably installing an inner core on the inner side of the check valve body, the inner core can be pulled out by pulling the pull ring after long-term use, thereby driving the valve plate to be pulled out, thereby realizing the removal and replacement of the inner core and the valve plate, which is more convenient to use and has lower later maintenance costs.

[0007] In order to solve the above technical problems, the technical solution of the utility model is:

[0008] A new type of check valve for range hoods includes a check valve body, a base, a reducing ring, a pull-out ring, an inner core and a valve plate. The base and the reducing ring are respectively installed at the upper and lower ends of the check valve body. The inner core is detachably installed on the inner side of the check valve body. The valve plate is rotatably installed on the inner side of the bottom of the inner core. A pull-out hole is opened on the side of the check valve body. The pull-out ring is arranged on the inner side of the pull-out hole and is snap-connected with the inner core.

[0009] Preferably, a sealing rubber ring is provided on the outer side of the valve plate.

[0010] Preferably, a snap-fit buckle is provided at the bottom of the inner core, and a snap-fit column adapted to the snap-fit buckle is provided at the end of the valve plate, and the snap-fit column is rotatably connected to the snap-fit buckle.

[0011] Preferably, an inclined valve plate mounting plate is provided on the inner side of the inner core, the snap buckle is provided at the bottom of the valve plate mounting plate, an oil fume through hole is provided at the center of the valve plate mounting plate, and the cross-sectional area of the valve plate is larger than the cross-sectional area of the oil fume through hole.

[0012] Preferably, the inner side of the pull-out ring is snap-connected to the outer side of the inner core, and a handle is provided on the outer side of the pull-out ring.

[0013] Preferably, the inner side of the bottom of the reducing ring is sleeved on the outer side of the upper end of the check valve body, and the inner side of the bottom of the check valve body is sleeved on the outer side of the upper end of the base.

[0014] By adopting the above technical scheme, the utility model provides a new type of range hood check valve, which has the following beneficial effects: the base and the reducing ring in the new type of range hood check valve are respectively installed at the upper and lower ends of the check valve body, the inner core is detachably installed on the inner side of the check valve body, and the valve plate is rotatably installed on the bottom inner side of the inner core. A pull-out hole is provided on the side of the check valve body, and a pull-out ring is arranged on the inner side of the pull-out hole and is connected with the inner core buckle. By detachably installing the inner core on the inner side of the check valve body, the inner core can be pulled out by pulling the pull-out ring after long-term use, and then the valve plate can be pulled out, thereby realizing the removal and replacement of the inner core and the valve plate, or the valve plate can be cleaned after disassembly, without the need to disassemble the entire check valve body, which is more convenient to use and has lower later maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded view of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the utility model;

[0017] Figure 3 A three-dimensional diagram of the present invention from another angle;

[0018] In the figure, 1-check valve body, 2-base, 3-reducing ring, 4-pull ring, 5-inner core, 6-valve plate, 7-pull-out hole, 8-sealing rubber ring, 9-snapping buckle, 10-snapping column, 11-valve plate mounting plate, 12-oil fume hole, 13-handle. DETAILED DESCRIPTION

[0019] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0022] like Figure 1-3 As shown, the novel range hood check valve comprises a check valve body 1, a base 2, a reducing ring 3, a pull ring 4, an inner core 5, and a valve disc 6. The base 2 and reducing ring 3 are respectively mounted on the upper and lower ends of the check valve body 1. The inner core 5 is detachably mounted on the inner side of the check valve body 1. The valve disc 6 is rotatably mounted on the inner side of the bottom of the inner core 5. A pull-through hole 7 is formed on the side of the check valve body 1. The pull ring 4 is disposed inside the pull-through hole 7 and is snap-connected to the inner core 5. It is understood that the check valve body 1, base 2, pull ring 4, inner core 5, and valve disc 6 can all be made of stainless steel, etc., and the reducing ring 3 can be made of rubber, etc.

[0023] Specifically, a sealing rubber ring 8 is provided on the outer side of the valve disc 6. When the oil pump is not working, the sealing rubber ring 8 can improve the sealing between the valve disc 6 and the inner core 5. A snap-fit buckle 9 is provided at the bottom of the inner core 5. A snap-fit column 10 adapted to the snap-fit buckle 9 is provided at the end of the valve disc 6. The snap-fit column 10 is rotatably connected to the snap-fit buckle 9. A valve disc mounting plate 11 is provided on the inner side of the inner core 5. The snap-fit buckle 9 is provided at the bottom of the valve disc mounting plate 11. A fume hole 12 is provided at the center of the valve plate mounting plate 11, and the cross-sectional area of the valve plate 6 is larger than the cross-sectional area of the fume hole 12, thereby blocking the reverse outflow of fume; the inner side of the pull-out ring 4 is snap-connected with the outer side of the inner core 5, and a handle 13 is provided on the outer side of the pull-out ring 4 to facilitate pulling out the pull-out ring 4; the inner side of the bottom of the reducing ring 3 is sleeved on the outer side of the upper end of the check valve body 1, and the inner side of the bottom of the check valve body 1 is sleeved on the outer side of the upper end of the base 2.

[0024] It can be understood that the utility model has a reasonable design and a unique structure. By detachably installing the inner core 5 on the inner side of the check valve body 1, the inner core 5 can be pulled out by pulling the pull ring 4 after long-term use, thereby driving the valve plate 6 to be pulled out, thereby realizing the removal and replacement of the inner core 5 and the valve plate 6, or cleaning the valve plate 6 after disassembly, without the need to disassemble the entire check valve body 1 from the range hood, it is more convenient to use and the later maintenance cost is lower.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A new type of range hood check valve, characterized by: It includes a check valve body, a base, a reducing ring, a pull-out ring, an inner core and a valve plate. The base and the reducing ring are respectively installed at the upper and lower ends of the check valve body. The inner core is detachably installed on the inner side of the check valve body. The valve plate is rotatably installed on the inner side of the bottom of the inner core. A pull-out hole is opened on the side of the check valve body. The pull-out ring is arranged on the inner side of the pull-out hole and is snap-connected with the inner core.

2. The novel range hood check valve according to claim 1 is characterized in that: The outer side of the valve plate is sleeved with a sealing rubber ring.

3. The novel range hood check valve according to claim 1 is characterized in that: A snap-fit buckle is provided at the bottom of the inner core, and a snap-fit column adapted to the snap-fit buckle is provided at the end of the valve plate, and the snap-fit column is rotatably connected to the snap-fit buckle.

4. The novel range hood check valve according to claim 3 is characterized in that: An inclined valve plate mounting plate is provided on the inner side of the inner core, the snap-fit buckle is provided at the bottom of the valve plate mounting plate, an oil fume through hole is provided at the center of the valve plate mounting plate, and the cross-sectional area of the valve plate is larger than the cross-sectional area of the oil fume through hole.

5. The novel range hood check valve according to claim 1 is characterized in that: The inner side of the pull-out ring is snap-connected with the outer side of the inner core, and a handle is provided on the outer side of the pull-out ring.

6. The novel range hood check valve according to claim 1 is characterized in that: The inner side of the bottom of the reducing ring is sleeved on the outer side of the upper end of the check valve body, and the inner side of the bottom of the check valve body is sleeved on the outer side of the upper end of the base.

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