Flue check valve capable of preventing air mixing and odor mixing

Abstract

The utility model provides a flue check valve capable of preventing air mixing and odor mixing, and relates to the technical field of kitchen utensils, a plurality of circles of concave-convex groove groups are arranged on at least one opposite surface of a valve seat or a valve plate, and when the valve plate rotates to be buckled on the valve seat, the convex parts of the concave-convex groove groups are tightly attached to the valve seat or the valve plate. Namely, indoor oil fume is firstly in contact with the concave-convex groove group embedded in the inner ring, the air pressure and the temperature of the oil fume can be blocked due to the resistance of the oil fume to the concave-convex groove group embedded in the inner ring, similarly, the oil fume in a public flue is firstly in contact with the concave-convex groove group on the outer ring through the fume exhaust hole, and the oil fume is prevented from being blocked due to the resistance of the concave-convex groove group embedded in the outer ring. When the check valve is used for a period of time, the air pressure and temperature of oil smoke can be blocked, and the acting force on the valve plate is reduced, so that the valve plate is not easy to deform, the valve plate and the valve port on the valve seat are always kept in a strong sealing state, and the phenomenon that the oil smoke in a public flue flows backwards due to deformation of the valve plate of the check valve after the check valve is used for a period of time is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen utensil technical field especially is related to a prevent wind and smell flue check valve. BACKGROUND

[0002] The check valve is used for the flue, and its main role is to prevent the medium from flowing backward, and can be applied to the pipeline of various media. The flue check valve has been widely applied in modern housing construction, and can prevent oil fume from flowing backward and play the connecting role of the pipeline.

[0003] However, the flue check valve in the prior art has the problem of public oil fume backflow, and the main reason is that the door plate and the silica gel pad of the check valve are prone to deformation after being heated for a period of time or residues are adhered to the sealing rubber strip and the door plate of the check valve during use, resulting in that the door plate and the valve hole of the check valve are not tightly sealed, and the phenomenon of oil fume backflow in the public flue occurs. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a flue check valve for preventing wind and smell from mixing, so as to solve the technical problem that the check valve and the silica gel pad in the prior art are deformed after being heated, resulting in that the door plate and the valve hole of the check valve are not tightly sealed, and the phenomenon of oil fume backflow occurs.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a flue check valve for preventing wind and smell from mixing, which comprises a valve body, the valve body has an exhaust pipe communicating inside and outside, the exhaust pipe is provided with a valve seat and a valve plate, the valve plate can rotate relative to the valve seat and is used for plugging the valve port of the valve seat, at least one opposite surface of the valve seat or the valve plate is provided with a plurality of sets of concave-convex grooves, when the valve plate is buckled on the valve seat, the convex part of the set of concave-convex grooves is tightly attached to the valve seat or the valve plate.

[0006] Optionally, the set of concave-convex grooves is composed of a plurality of concave grooves and a plurality of convex parts, the silica gel pad is installed on the concave groove and / or the convex part, or the silica gel pad is installed on the two sides of the concave groove, or the silica gel pad is installed on the two sides of the convex groove.

[0007] Optionally, the set of concave-convex grooves comprises a first set of concave-convex grooves and a second set of concave-convex grooves, the first set of concave-convex grooves is located on the valve seat, and the second set of concave-convex grooves is located on the valve plate.

[0008] Optionally, the valve seat is vertically arranged, obliquely arranged or horizontally arranged.

[0009] Optionally, when the valve seat is vertically arranged, the valve plate is rotationally connected with the inner wall of the exhaust pipe through a rotating shaft.

[0010] Optionally, a check torsion spring is arranged on the rotating shaft, one fixed end of the check torsion spring is connected with the valve body, and the other fixed end is connected with the valve disc.

[0011] Or the valve disc is electrically connected with the motor, and the motor drives the valve disc to rotate towards the valve body.

[0012] Optionally, when the valve seat is arranged obliquely, the valve disc is rotatably connected with the inner wall of the exhaust pipe through the rotating shaft.

[0013] Optionally, the cross section of the exhaust pipe is in a U-shaped structure.

[0014] Optionally, an inspection hole is arranged on the top wall of the valve body, and a sealing cover plate is arranged on the inspection hole.

[0015] Optionally, an air inlet joint is arranged at one end of the valve body, and a fixing plate is arranged at the other end.

[0016] The anti-wind and anti-smell flue check valve has the following technical effects:

[0017] The check valve comprises a valve body, the valve body is provided with an exhaust pipe communicating the inside and the outside, the exhaust pipe is provided with a valve seat and a valve disc, the valve disc can rotate relative to the valve seat, and the valve disc can also be used for plugging a valve port of the valve seat; different from a traditional check valve, at least one opposite surface of the valve seat or the valve disc is provided with a plurality of sets of concave-convex grooves; when the valve disc rotates away from the valve port, oil fume in a room is discharged outward through the valve port; when the valve disc rotates to be buckled on the valve seat, a convex part of the set of concave-convex grooves is tightly attached to the valve seat or the valve disc, that is, the oil fume in the room first contacts the set of concave-convex grooves of the inner circle, the wind pressure and the temperature of the oil fume are blocked due to the resistance of the set of concave-convex grooves of the inner circle; similarly, oil fume in a public flue first contacts the set of concave-convex grooves of the outer circle through a smoke exhaust hole, the wind pressure and the temperature of the oil fume are blocked due to the resistance of the set of concave-convex grooves of the outer circle; since the oil fume in the room and the oil fume in the public flue are separated by the set of concave-convex grooves of the inner circle and the set of concave-convex grooves of the outer circle, although the wind pressure and the temperature received by the set of concave-convex grooves of the inner circle and the set of concave-convex grooves of the outer circle are different, the wind pressure and the temperature difference are not directly transmitted between the set of concave-convex grooves of the inner circle and the set of concave-convex grooves of the outer circle, so that the acting force on the valve disc is reduced, the valve disc is not easy to deform, and the valve disc and the valve port on the valve seat can always maintain a relatively strong sealing state, thereby avoiding the phenomenon that the oil fume in the public flue backflows due to deformation of the valve disc of the check valve after the check valve is used for a period of time. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 Figure 1 is a side view structural schematic diagram of the smoke flue check valve against wind and smell intermingling according to an embodiment of the present application;

[0020] Figure 2 Figure 2 is an internal structure diagram of the smoke flue check valve against wind and smell intermingling according to an embodiment of the present application; Figure 1

[0021] Figure 3 Figure 3 is a structural schematic diagram of the valve body of the smoke flue check valve against wind and smell intermingling according to an embodiment of the present application; Figure 1

[0022] Figure 4 Figure 4 is a structural schematic diagram of the upper cover plate of the smoke flue check valve against wind and smell intermingling according to an embodiment of the present application; Figure 1

[0023] Figure 5 Figure 5 is a structural schematic diagram of the sealing ring corresponding to the upper cover plate according to an embodiment of the present application; Figure 4

[0024] Figure 6 Figure 6 is a structural schematic diagram of the fixed plate of the smoke flue check valve against wind and smell intermingling according to an embodiment of the present application; Figure 1

[0025] Figure 7 Figure 7 is a structural schematic diagram of the sealing ring corresponding to the fixed plate according to an embodiment of the present application; Figure 6

[0026] Figure 8 is a side view structural schematic diagram of the smoke flue check valve against wind and smell intermingling according to another embodiment of the present application; Figure 8

[0027] Figure 9 is an internal structure diagram of the smoke flue check valve against wind and smell intermingling according to another embodiment of the present application. Figure 9 Figure 8 Figure 10 is a structural schematic diagram of the valve body of the smoke flue check valve against wind and smell intermingling according to another embodiment of the present application;

[0028] Figure 11 is a structural schematic diagram of the upper cover plate of the smoke flue check valve against wind and smell intermingling according to another embodiment of the present application;

[0029] 1, valve body; 11, exhaust pipe; 111, smoke exhaust hole; 112, arc-shaped outer convex structure; 12, valve seat; 121, first concave-convex groove group; 122, valve port; 13, maintenance hole;

[0030] 2, check structure; 21, valve piece; 211, second concave-convex groove group; 22, rotating shaft; 23, check torsional spring;

[0031] 3, fixed plate; 31, fixed plate sealing ring;​​​​​​

[0032] 4. Top cover plate; 41. Cover plate sealing ring. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] Based on the deficiencies of the existing technology, the following describes in detail the flue gas check valve for preventing cross-ventilation and cross-odor in conjunction with specific embodiments 1 and 2.

[0035] Example 1:

[0036] This embodiment provides a flue gas check valve to prevent cross-ventilation and odor transfer, such as... Figures 1-7 As shown, this type of check valve includes a valve body 1 and a check structure 2. The check structure 2 is installed inside the valve body 1. The valve body 1 has an exhaust pipe 11 that connects the inside and outside. The two ends of the exhaust pipe 11 are a smoke inlet and a smoke exhaust outlet 111, respectively. The front end interface of the smoke inlet can be an air inlet pipe of various models.

[0037] like Figure 1 and Figure 2 As shown, in this embodiment, the valve port 122 has three first groove groups 121 in its circumferential direction. The radii of the three first groove groups 121 are different, decreasing sequentially from the outside to the inside, and are concentrically arranged with the center point of the valve port 122 as the center. The check structure 2 includes a valve plate 21, which is used to block the valve port 122 and can rotate relative to the valve port 122 within the exhaust pipe 11. The side of the valve plate 21 used to block the valve port 122 is provided with grooves that are adapted to the first groove groups 121. The second groove group 211 is equipped with three groove groups. The radii of the three groove groups 211 are different and decrease from the outside to the inside. They are concentrically arranged with the center point of the valve plate 21 as the center. When the valve plate 21 rotates away from the valve port 122, the oil fumes are discharged outward through the valve port 122 and the exhaust hole 111. When the valve plate 21 is fastened on the valve port 122, each first groove group 121 and the corresponding second groove group 211 are interlocked.

[0038] It needs to be explained that the shape of the first concave-convex groove group 121 circumferentially arranged on the valve port 122 is not limited, which can be circular, square, rectangular, triangular, polygonal or oval, etc., and the embodiment is preferably circular; similarly, the shape of the second concave-convex groove group 211 circumferentially arranged on the valve plate 21 is also not limited, which can be circular, square, rectangular, triangular, polygonal or oval, etc., and the embodiment is also preferably circular.

[0039] And the number of the first concave-convex groove group 121 and the second concave-convex groove group 211 is also not limited, and at least one can meet the basic function of the utility model.

[0040] The check valve of the utility model can achieve the purpose of preventing wind and smell from being mixed.

[0041] When closed, the oil fume in the exhaust pipe 11 first contacts the first concave-convex groove group 121 and the second concave-convex groove group 211 embedded in the outer ring, and the wind pressure and temperature of the oil fume can be blocked due to the resistance of the first concave-convex groove group 121 and the second concave-convex groove group 211 embedded in the outer ring. Similarly, when closed, the oil fume remaining in the valve port 122 first contacts the first concave-convex groove group 121 and the second concave-convex groove group 211 embedded in the inner ring, and the wind pressure and temperature of the oil fume can be blocked due to the resistance of the first concave-convex groove group 121 and the second concave-convex groove group 211 embedded in the inner ring. Due to the existence of the first concave-convex groove group 121 and the second concave-convex groove group 211, the inner ring and the outer ring block the negative pressure and the room temperature difference, and the temperature and pressure of the oil fume are reduced, the middle ring is not subjected to any change in pressure and temperature difference, the sealing performance is improved, the force acting on the valve plate 21 is reduced, and therefore the pressure on both sides of the valve plate 21 is limited, and the valve plate 21 is not easy to deform, thereby keeping the valve plate 21 and the valve port 122 in a strong sealing state.

[0042] According to a preferred embodiment, the first concave-convex groove group 121 is composed of a plurality of grooves and a plurality of protrusions, and the protrusions and the grooves are preferably arranged alternately, i.e. the two sides of the protrusions are grooves, and the two sides of the grooves are protrusions; similarly, the second concave-convex groove group 211 is also composed of a plurality of grooves and a plurality of protrusions, and the protrusions and the grooves are preferably arranged alternately, i.e. the two sides of the protrusions are grooves, and the two sides of the grooves are protrusions.

[0043] The grooves and / or protrusions of the embodiment are provided with silica gel pads, which can increase the sealing performance between the valve port 122 and the valve plate 21 and reduce the closing noise.

[0044] The valve port 122 of the embodiment is arranged obliquely, the check structure 2 comprises a rotating shaft 22 connected with the valve plate 21, two ends of the rotating shaft 22 are respectively rotatably connected with the inner wall of the exhaust pipe 11, and the included angle between the plane where the valve port 122 is located and the valve plate 21 is an acute angle. In this way, when the valve plate 21 rotates towards the valve port 122, the stroke is short, and a torsional spring does not need to be arranged on the rotating shaft 22, and the valve plate itself can be closed with the valve seat.

[0045] Since the torsional spring does not need to be arranged on the rotating shaft 22, when the valve plate 21 is buckled on the valve port 122, the resistance of the valve plate 21 to the oil fume is small, that is, a small amount of oil fume wind power can lift the valve plate 21.

[0046] According to a preferred embodiment, as shown in Figure 3 , the cross section of the exhaust pipe 11 is U-shaped, that is, the bottom wall of the exhaust pipe 11 is outwardly convex in an arc-shaped outwardly convex structure 112. The outwardly convex arc here refers to the middle part being outwardly convex. Compared with the flat bottom, compared with the circular cross section of the exhaust pipe 11, the arc-shaped bottom can more easily collect residual oil stains.

[0047] According to a preferred embodiment, as shown in Figures 3-5 , the top wall of the valve body 1 is provided with an inspection hole 13, and the upper cover plate 4 is sealed on the inspection hole 13. The upper cover plate 4 achieves the purpose of sealing through the cover plate sealing ring 41. Of course, the inspection hole can also be provided on the left side, the right side and the lower side.

[0048] The inspection hole 13 is arranged on the top of the valve body 1. When the inside of the valve body 1 is damaged, the inside of the valve body 1 can be directly inspected by opening the upper cover plate 4, which is simple and fast.

[0049] According to a preferred embodiment, as shown in Figure 6 and Figure 7 , the side wall of the valve body 1 with the smoke exhaust hole 111 is provided with a fixing plate 3, and the valve body 1 is installed through the fixing plate 3. In order to strengthen the sealing strength of the installation of the valve body 1, the fixing plate 3 is also provided with a fixing plate sealing ring 31.

[0050] Embodiment two:

[0051] The embodiment provides a smoke flue check valve for preventing wind and smell from being mixed, as shown in Figure 8 and Figure 9 , the check valve comprises a valve body 1 and a check structure 2, the check structure 2 is installed in the valve body 1, the valve body 1 has an exhaust pipe 11 communicating inside and outside, and two ends of the exhaust pipe 11 are respectively an inlet hole and a smoke exhaust hole 111.

[0052] As shown in Figure 8 and Figure 9As shown, the circumference of the valve port 122 has three first concave-convex groove groups 121, the radii of the three first concave-convex groove groups 121 are different, sequentially decreasing from outside to inside, and concentrically arranged with the center point of the valve port 122 as the center; and the check structure 2 comprises a valve disc 21, the valve disc 21 is used for blocking the valve port 122 and can rotate relative to the air inlet hole in the exhaust pipe 11, the side surface of the valve disc 21 used for blocking the valve port 122 is provided with a second concave-convex groove group 211 matched with the first concave-convex groove group 121, the second concave-convex groove group 211 also comprises three, the radii of the three second concave-convex groove groups 211 are different, sequentially decreasing from outside to inside, and concentrically arranged with the center point of the valve disc 21 as the center, when the valve disc 21 rotates away from the valve port 122, the oil fume is discharged outward through the valve port 122 and the smoke discharge hole 111 in sequence, when the valve disc 21 is buckled on the valve port 122, each first concave-convex groove group 121 is embedded with the corresponding second concave-convex groove group 211.

[0053] It should be noted that the shape of the first concave-convex groove group 121 arranged circumferentially on the valve port 122 is not limited in the utility model, which can be circular, square, rectangular, triangular, polygonal or oval, etc., and the utility model is preferably circular; similarly, the shape of the second concave-convex groove group 211 arranged circumferentially on the valve disc 21 is also not limited in the utility model, which can be circular, square, rectangular, triangular, polygonal or oval, etc., and the utility model is also preferably circular.

[0054] And the number of the first concave-convex groove group 121 and the second concave-convex groove group 211 is also not limited in the utility model, at least one can meet the basic function of the utility model.

[0055] The reason why the check valve of the utility model can prevent wind and smell from being mixed is that:

[0056] When closed, the oil fume in the exhaust pipe 11 first contacts the first concave-convex groove group 121 and the second concave-convex groove group 211 embedded in the outer ring, the wind pressure and temperature of the oil fume can be blocked due to the resistance of the first concave-convex groove group 121 and the second concave-convex groove group 211 embedded in the outer ring; similarly, when closed, the oil fume remaining in the valve port 122 first contacts the first concave-convex groove group 121 and the second concave-convex groove group 211 embedded in the inner ring, the wind pressure and temperature of the oil fume can be blocked due to the resistance of the first concave-convex groove group 121 and the second concave-convex groove group 211 embedded in the inner ring; due to the existence of the first concave-convex groove group 121 and the second concave-convex groove group 211, the inner ring and the outer ring block the negative pressure and the room temperature difference, the temperature and pressure of the oil fume are reduced, the middle ring is not subjected to any change in pressure and temperature difference, the sealing performance is improved, the force acting on the valve disc 21 is reduced, so the pressure on both sides of the valve disc 21 is limited and the valve disc 21 is not easy to deform, thereby the valve disc 21 and the valve port 122 always maintain a strong sealing state.

[0057] According to a preferred embodiment, the first concave-convex groove group 121 is composed of a plurality of grooves and a plurality of protrusions, and the protrusions and the grooves are preferably arranged alternately, that is, the two sides of the protrusion are grooves, and the two sides of the groove are also protrusions.

[0058] The valve port 122 of the embodiment is vertically arranged, and the check structure 2 comprises a rotating shaft 22 connected with the valve plate 21, both ends of the rotating shaft 22 are rotatably connected with the inner wall of the exhaust pipe 11, and the angle between the plane where the valve port 122 is located and the valve plate 21 is a right angle.

[0059] In order to strengthen the sealing strength between the valve plate 21 and the valve port 122, the rotating shaft 22 is provided with a check torsional spring 23, one fixed end of the check torsional spring 23 is connected with the valve body 1, and the other fixed end is connected with the valve plate 21.

[0060] The embodiment is provided with the check torsional spring 23 on the rotating shaft 22, when the valve plate 21 is buckled on the valve port 122, the resistance of the valve plate 21 to the oil fume is relatively large, that is, only enough amount of oil fume wind power can overcome the gravity of the valve plate 21 to lift up the valve plate 21.

[0061] Embodiment three

[0062] The embodiment can also replace the inclined arrangement of the valve seat of the first embodiment or the vertical arrangement of the valve seat of the second embodiment with a horizontal arrangement, and other structures are the same, when the valve seat is arranged horizontally, the valve plate is also arranged horizontally, and the valve port on the valve seat is in a normally closed state in the non-working state.

[0063] In the description of the utility model, it is necessary to explain that, unless otherwise specified, the meaning of "a plurality of" is two or more than two;The terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0064] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term " install " " link " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electric connection;Can be direct connection, also can be indirectly connected through the intermediate medium.

[0065] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A backflow preventing and cross smell preventing flue check valve comprising a valve body having an exhaust pipe communicating inside and outside in the valve body, characterized in that, The exhaust pipe is provided with a valve seat and a valve plate, the valve plate can rotate relative to the valve seat and is used for plugging the valve port of the valve seat, at least one opposite surface of the valve seat or the valve plate is provided with a plurality of sets of concave-convex grooves, when the valve plate is buckled on the valve seat, the convex part of the concave-convex groove set is tightly attached to the valve seat or the valve plate.

2. The wind and odor cross passage chimney check valve according to claim 1, characterized in that, The concave-convex groove set is composed of a plurality of grooves and a plurality of protrusions, the grooves and / or the protrusions are provided with silica gel pads, or the two sides of the groove are provided with silica gel pads, or the two sides of the convex groove are provided with silica gel pads.

3. The wind and odor cross passage chimney check valve according to claim 1, characterized in that, The concave-convex groove set includes a first concave-convex groove set and a second concave-convex groove set, the first concave-convex groove set is located on the valve seat, and the second concave-convex groove set is located on the valve plate.

4. The wind and odor cross passage chimney check valve according to any one of claims 1 to 3, characterized in that, The valve seat is vertically arranged, obliquely arranged or horizontally arranged.

5. The wind and odor cross passage chimney check valve according to claim 4, wherein When the valve seat is vertically arranged, the valve plate is rotationally connected with the inner wall of the exhaust pipe through a rotating shaft.

6. The wind and odor cross carry preventing chimney check valve according to claim 5, characterized in that, A check torsion spring is mounted on the rotating shaft, one fixed end of the check torsion spring is connected with the valve body, and the other fixed end is connected with the valve plate. Or the valve plate is electrically connected with a motor, and the motor drives the valve plate to rotate relative to the valve body.

7. The wind and odor cross carry preventing chimney check valve according to claim 4, wherein When the valve seat is obliquely arranged, the valve plate is rotationally connected with the inner wall of the exhaust pipe through a rotating shaft.

8. The wind and odor cross carry preventing chimney check valve according to claim 1, wherein The cross section of the exhaust pipe is in a U-shaped structure.

9. The wind and odor cross carry preventing chimney check valve according to claim 1, wherein A top wall of the valve body is provided with an inspection hole, and the inspection hole is sealed by an upper cover plate.

10. The wind and odor cross carry preventing chimney check valve according to claim 1, wherein One end of the valve body is provided with an air inlet joint, and the other end is provided with a fixing plate.

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