Valve plate and exhaust valve

Abstract

The invention relates to a valve plate and an exhaust valve to optimize the structure of the valve plate. The valve plate is used for the exhaust valve and comprises a body and a flexible part, the body is movably arranged on a valve body, the flexible part is arranged on the body, and the body abuts against the valve body through the flexible part so as to close an exhaust port in the valve body; wherein the body is provided with reinforcing ribs, when the flexible part is arranged on the body, the reinforcing ribs are located on the inner side of the flexible part, and the spacing distance between the reinforcing ribs and the flexible part is smaller than or equal to 20 mm.

Description

Technical Field

[0001] The invention relates to a valve plate and an exhaust valve. Background Art

[0002] On August 9, 2016, the applicant filed an invention patent application numbered 2019101008997, entitled "Fireproof Check Valve." The patent discloses a valve disc and a flexible member for mitigating the force exerted by the disc against the body. The flexible member includes a connecting portion and a sealing portion for connecting the disc. The sealing portion and the connecting portion adhere to the body to close the gap between the disc and the body. In this structure, the disc is susceptible to deformation due to external impact.

[0003] On August 9, 2016, the applicant submitted an invention patent application with application number 2016106548305, entitled "A Fire Check Valve." This patent discloses a valve disc, a fixing member, and a flexible member for mitigating the force exerted by the valve disc against the main body. One end of the fixing member is connected to the valve disc, while the other end of the fixing member squeezes the flexible member and clamps it between the fixing member and the valve disc. The fixing member abuts against the main body when the valve disc closes the exhaust port. In this structure, the fixing member collides with the main body when the valve disc closes the exhaust port, resulting in a metallic clashing sound. This metallic clashing sound of the fire check valve degrades the user experience.

[0004] On March 26, 2018, the applicant filed invention application number 2018204141407, entitled "Valve." This patent discloses a valve disc comprising a metal plate and a flexible member disposed on the outer wall of the metal plate. When the valve disc closes the exhaust port, the flexible member and the metal plate respectively abut against the valve body. In this structure, the metal plate collides with the valve body when the valve disc closes the exhaust port, resulting in a metallic impact sound.

[0005] It is not difficult to find from the above description that there is room for improvement in the existing valve plate. Summary of the Invention

[0006] The problem to be solved by the present invention is to provide a valve plate and an exhaust valve to optimize the structure of the valve plate.

[0007] In order to solve the above problems, the present invention provides the following technical solutions:

[0008] The valve plate is used for the exhaust valve, and the valve plate includes:

[0009] The main body is movably arranged on the valve body,

[0010] A flexible member, the flexible member being provided on the main body, and the main body abutting against the valve body through the flexible member to close the exhaust port on the valve body;

[0011] Wherein, the main body is provided with a reinforcing rib. When the flexible member is provided on the main body, the reinforcing rib is located inside the flexible member, and the spacing distance between the reinforcing rib and the flexible member is ≤20 mm.

[0012] In the present invention, the main body is provided with reinforcing ribs, and the deformation resistance of the main body is improved by providing the reinforcing ribs. In this way, the structure of the valve plate is optimized by improving the deformation resistance of the main body.

[0013] In the present invention, when the flexible member is disposed within the main body, the reinforcing rib is located inside the flexible member, and the spacing between the reinforcing rib and the flexible member is ≤20mm. Placing the reinforcing rib inside the flexible member improves the main body's ability to resist deformation within the flexible member. Because the spacing between the reinforcing rib and the flexible member is ≤20mm, the main body's ability to resist deformation is also improved to a certain extent. The closer the spacing between the reinforcing rib and the flexible member, the greater the resistance to deformation of the main body. This design further optimizes the valve plate structure by improving the resistance to deformation of the main body with the flexible member.

[0014] In the present invention, the main body abuts against the valve body through the flexible member to close the exhaust port on the valve body. This design eliminates the metal impact sound generated when the valve plate closes the exhaust port, thereby further optimizing the structure of the valve plate.

[0015] Furthermore, the spacing distance between the reinforcing rib and the flexible part is ≤5mm, and the reinforcing rib extends from the main body toward the exhaust port on the valve body. When the main body abuts the valve body through the flexible part to close the exhaust port on the valve body, the reinforcing rib passes through the exhaust port on the valve body.

[0016] As we all know, different floors correspond to different air pressure values ​​(generally speaking, the lower the floor, the greater the air pressure). Therefore, it is less difficult for oil smoke to be discharged into the flue in a residential building on a higher floor than in a residential building on a lower floor. One factor controlling the difficulty of the valve opening the exhaust port can be the flexible component. Different flexible component sizes can vary the difficulty of the valve opening the exhaust port to a certain extent. Therefore, when the distance between the reinforcing rib and the flexible component is ≤5mm, the distance between the reinforcing rib and the flexible component can reserve space for replacing flexible components of different specifications.

[0017] In this invention, the exhaust port corresponds to the inner wall of the valve body. Since the ribs shift the center of gravity of the valve body, after the ribs extend from the valve body toward the exhaust port, they shift the center of gravity of the valve body toward the inner wall. This design ensures that the ribs consistently maintain the tendency of the valve disc to close the exhaust port.

[0018] Based on the fact that "when the body abuts the valve body through the flexible member to close the exhaust port on the valve body, the reinforcing rib extends through the exhaust port on the valve body," it is easy to infer that the reinforcing rib does not come into contact with the valve body, thereby preventing the reinforcing rib from colliding with the valve body when the valve disc closes the exhaust port. This design eliminates the metallic impact sound produced by the reinforcing rib when the valve disc closes the exhaust port, further optimizing the valve disc structure.

[0019] Furthermore, the reinforcing rib is formed by the body being recessed inward, and the flexible member abuts against the reinforcing rib;

[0020] And / or, at least part of the flexible part extends outside the main body, a bend is provided on the flexible part, the flexible part located on one side of the bend is used to connect to the main body, the flexible part located on the other side of the bend is used to abut the valve body, and the flexible part located on one side of the bend is stacked with the flexible part located on the other side of the bend.

[0021] When the reinforcing ribs are formed by the body being recessed inward, the reinforcing ribs can be formed by stamping the body. This structure can effectively reduce the manufacturing cost of the valve plate, that is, the valve plate does not need to be manufactured with a separate mold for forming the reinforcing ribs.

[0022] In the present invention, the flexible part is made of silicone, and one of the steps of connecting the flexible part and the body as one body includes: step one, placing the body in a mold; step two, injecting the molten flexible part into the mold; step three, connecting the flexible part to the body after cooling. When the flexible part abuts against the reinforcing rib, the reinforcing rib can position the flexible part in step two, that is to say: the molten silicone first enters the mold from the pouring port, then the molten silicone fills the gap between the body and the mold, and forms the first adhesive section and / or the second adhesive section after cooling; finally, the molten silicone enters the molding channel of the mold, and forms a sealing section after cooling. In the present invention, at least part of the flexible part extends outside the body. This structure is used to ensure the sealing effect of the flexible part, that is, when the valve plate closes the exhaust port, the flexible part can prevent the oil smoke in the flue from passing through the exhaust port and entering the room.

[0023] In the present invention, a bend is provided on the flexible member. The flexible member on one side of the bend is used to connect to the main body, and the flexible member on the other side of the bend is used to abut the valve body. The flexible member on one side of the bend and the flexible member on the other side of the bend are stacked. When the flexible member on one side of the bend and the flexible member on the other side of the bend are stacked, the main body hits the valve body after secondary buffering, that is, the flexible member on the other side of the bend first abuts the valve body, and then the main body abuts the flexible member on the other side of the bend through the flexible member on one side of the bend. This design further reduces the impact sound generated by the valve disc closing the exhaust port, thereby optimizing the structure of the valve disc.

[0024] Furthermore, the body is made of metal, and the flexible member is adhered to the inner wall of the body, and / or the flexible member is adhered to the side wall of the body. In the present invention, the body is made of metal to increase its resistance to deformation. When the flexible member is adhered to the inner wall of the body, it can prevent the inner wall of the body from directly colliding with the valve body. When the flexible member is adhered to the side wall of the body, it can prevent the side wall of the body from scratching the user's body, especially the hands.

[0025] Furthermore, the flexible member includes a first adhesive section, a second adhesive section, and a sealing section connected in sequence, wherein the first adhesive section is adhered to the side wall of the body, the second adhesive section is adhered to the inner wall of the body, and at least a portion of the sealing section and the second adhesive section are stacked;

[0026] The length of the sealing segment is ≥5 mm, and / or the angle between the sealing segment and the body is ≤60°. When the length of the sealing segment is ≥5 mm and the angle between the sealing segment and the body is ≤60°, the flexible member has a sufficient sealing length and is effective in eliminating metal impact noise.

[0027] Furthermore, the body is further provided with a guide rib located inside the reinforcing rib, the guide rib is provided on the outer wall of the body, and the reinforcing rib is provided on the inner wall of the body;

[0028] The weight of the guide rib is greater than the weight of the reinforcement rib, and / or the projection of the guide rib on the body is greater than the projection of the reinforcement rib on the body. This design ensures that the center of gravity of the body is always located on the side of the exhaust port.

[0029] Furthermore, a mounting plate is provided on the main body, an axial hole is provided on the mounting plate, a shaft rod which can be inserted into the valve body is provided in the axial hole, and a gear is sleeved on one end of the shaft rod.

[0030] In the present invention, the exhaust valve comprises two valve plates, each of which is provided with a gear, and the gears of adjacent valve plates mesh with each other. This design facilitates the two valve plates to open all exhaust ports simultaneously.

[0031] Furthermore, the mounting plate is detachably mounted on the main body; and / or a baffle is provided on the mounting plate, and the other end of the shaft can abut against the baffle.

[0032] Since the valve plate, gear and flexible member are exposed to oil smoke for a long time, liquid oil smoke is easily attached to the surfaces of the valve plate, gear and flexible member. Therefore, when the mounting plate is detachably provided on the main body, the valve plate, gear and flexible member are easy to disassemble and clean.

[0033] In the present invention, when the other end of the shaft can abut against the baffle, the baffle can be used to limit the range of motion of the shaft. This design prevents two adjacent gears from being misaligned with each other.

[0034] Furthermore, the outer wall of the flexible member is provided with a weight rib. With such a design, the weight rib increases the weight of the outer side of the flexible member to improve the sealing reliability of the flexible member.

[0035] In addition, when the outer wall of the flexible member is provided with a counterweight rib, the flexible member can increase the initial force required by the valve disc to open the exhaust port through the counterweight rib. This design reduces the probability of the valve disc accidentally opening the exhaust port.

[0036] Furthermore, the mounting plate is provided with a positioning piece, and the body is provided with a matching piece that matches the positioning piece. With such a design, when the positioning piece and the matching piece match each other, the mounting plate will be installed to a predetermined position on the body.

[0037] The exhaust valve includes:

[0038] A valve body, wherein the valve body is provided with two exhaust ports;

[0039] Two valve plates, each valve plate being a valve plate according to any one of the above technical solutions, and the valve plates are used to open or close the exhaust port;

[0040] a shift rod movably disposed on the valve body;

[0041] an elastic element, the elastic element being provided between the shifting rod and the valve body, and being used for driving the shifting rod to move relative to the valve body;

[0042] a temperature sensing mechanism, the temperature sensing mechanism having an operating state and a non-operating state. When the temperature sensing mechanism is in the operating state, the shifting rod is fixedly connected to the valve body through the temperature sensing mechanism; when the temperature sensing mechanism is in the non-operating state, the temperature sensing mechanism is separated from the shifting rod. After the temperature sensing mechanism and the shifting rod are separated, the elastic element drives the shifting rod to move relative to the valve body, so that the shifting rod pushes the valve plate to close the exhaust port;

[0043] When the valve body is mounted on a wall or flue, the exhaust port is tilted, with each valve plate positioned above the exhaust port. When the exhaust port is tilted and each valve plate is positioned above the exhaust port, the valve plates tend to close the exhaust port. This design prevents the valve plates from opening the exhaust port when the range hood is not in operation.

[0044] Furthermore, the valve body is provided with a first valve seat and a second valve seat, each valve plate is rotatably connected to the first valve seat via a shaft, and the shifting rod is rotatably provided on the second valve seat;

[0045] The projection of at least a portion of the shaft on a vertical plane coincides with the projection of the shift lever on a vertical plane, and the rotation angle of each valve disc relative to the valve body is ≤ 90°. Furthermore, the projection of at least a portion of the shaft on a vertical plane coincides with the projection of the second valve seat on a vertical plane, and the rotation angle of each valve disc relative to the valve body is ≤ 90°. This design ensures that the valve disc can always move in the direction of closing the exhaust port under the action of its own weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a first stereoscopic view of the valve plate in a preferred embodiment of the present invention;

[0047] Figure 2 This is a front view of the valve plate in a preferred embodiment of the present invention;

[0048] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0049] Figure 4 for Figure 3 A partial enlarged view of the

[0050] Figure 5 A cross-sectional view of a portion of a valve plate in a preferred embodiment of the present invention;

[0051] Figure 6 This is a second stereoscopic view of the valve plate in the preferred embodiment of the present invention;

[0052] Figure 7 A perspective view of an exhaust valve in a preferred embodiment of the present invention;

[0053] Figure 8 A three-dimensional diagram of an exhaust valve in a preferred embodiment of the present invention (one valve plate is hidden);

[0054] Figure 9 A rear view of an exhaust valve in a preferred embodiment of the present invention;

[0055] Figure 10 for Figure 9 A partial enlarged view of point C in the middle. DETAILED DESCRIPTION

[0056] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0057] See also Figure 1 and Figure 7 , valve plate 1 is used for exhaust valve, valve plate 1 includes:

[0058] The body 11 is movably arranged on the valve body 2.

[0059] The flexible member 12 is provided on the body 11 and is located outside the body 11. The body 11 abuts against the valve body 2 through the flexible member 12 to close the exhaust port 20 on the valve body 2.

[0060] The main body 11 is provided with a reinforcing rib 111 . When the flexible member 12 is provided on the main body 11 , the reinforcing rib 111 is located inside the flexible member 12 , and the spacing distance between the reinforcing rib 111 and the flexible member 12 is ≤20 mm.

[0061] In the present invention, the spacing distance between the reinforcing rib 111 and the flexible part 12 includes 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, and 20mm.

[0062] Combine Figure 2 、 Figure 3 and Figure 4 It can be found that a mounting portion 114 is provided on the edge of the main body 11, and the mounting portion 114 and the reinforcing rib 111 are transitioned in an arc shape. The flexible part 12 is arranged on the inner wall 1112 of the main body 11 (the inner wall 1112 of the main body 11 is the inner wall 1112 of the mounting portion 114). The arc transition between the mounting portion 114 and the reinforcing rib 111 is connected with the flexible part 12. At this time, the spacing distance between the reinforcing rib 111 and the flexible part 12 is 0 mm, that is, the reinforcing rib 111 and the flexible part 12 are connected end to end.

[0063] In the present invention, the main body 11 is provided with reinforcing ribs 111 , and the deformation resistance of the main body 11 is improved by providing the reinforcing ribs 111 on the main body 11 .

[0064] See also Figure 4 When the flexible member 12 is disposed on the main body 11, the reinforcing rib 111 is located inside the flexible member 12, and the distance between the reinforcing rib 111 and the flexible member 12 is ≤20mm. Placing the reinforcing rib 111 inside the flexible member 12 improves the deformation resistance of the main body 11 located inside the flexible member 12. Because the distance between the reinforcing rib 111 and the flexible member 12 is ≤20mm, the deformation resistance of the mounting portion 114 is also improved to a certain extent. The closer the distance between the reinforcing rib 111 and the flexible member 12, the stronger the deformation resistance of the mounting portion 114.

[0065] Preferably, the spacing distance between the reinforcing rib 111 and the flexible part 12 is ≤5 mm, and the reinforcing rib 111 extends from the main body 11 toward the exhaust port 20 on the valve body 2. When the main body 11 abuts against the valve body 2 through the flexible part 12 to close the exhaust port 20 on the valve body 2, the reinforcing rib 111 passes through the exhaust port 20 on the valve body 2.

[0066] As is well known, the air pressure values ​​corresponding to floors of different heights are also different (generally speaking, the lower the floor, the greater the air pressure value). Therefore, it is less difficult for oil smoke to be discharged into the flue in a residential building on a high floor than in a residential building on a low floor. One factor controlling the difficulty of the valve plate 1 opening the exhaust port 20 can come from the flexible member 12. That is, the size of the flexible member 12 of different specifications can change the difficulty of the valve plate 1 opening the exhaust port 20 to a certain extent. Therefore, when the distance between the reinforcing rib 111 and the flexible member 12 is ≤5mm, the distance between the reinforcing rib 111 and the flexible member 12 can reserve space for replacing flexible members 12 of different specifications.

[0067] In the present invention, the exhaust port 20 corresponds to the inner wall 1112 of the body 11. Since the provision of the reinforcing rib 111 will change the center of gravity of the body 11, after the reinforcing rib 111 extends from the body 11 toward the exhaust port 20 on the valve body 2, the reinforcing rib 111 will cause the center of gravity of the body 11 to be biased toward the inner wall 1112 of the body 11. In other words, the reinforcing rib 111 will cause the center of gravity of the body 11 to be biased toward the exhaust port 20. This structure ensures that the reinforcing rib 111 will always maintain the tendency of the valve disc 1 to close the exhaust port 20 on the valve body 2.

[0068] Based on the statement that "when the body 11 abuts the valve body 2 via the flexible member 12 to close the exhaust port 20 on the valve body 2, the reinforcing rib 111 penetrates the exhaust port 20 on the valve body 2," it is easy to infer that the reinforcing rib 111 will not come into contact with the valve body 2 when the valve disc 1 closes the exhaust port 20, thereby preventing the reinforcing rib 111 from colliding with the valve body 2 when the valve disc 1 closes the exhaust port 20. In this structure, the metal impact sound produced by the reinforcing rib 111 when the valve disc 1 closes the exhaust port 20 is eliminated, thereby further optimizing the structure of the valve disc.

[0069] See also Figure 3 The reinforcing rib 111 is formed by an inward depression of the main body 11, and the flexible member 12 preferably abuts the reinforcing rib 111. When the reinforcing rib 111 is formed by an inward depression of the main body 11, the reinforcing rib 111 can be formed by stamping the main body 11. This structure can effectively reduce the manufacturing cost of the valve disc 1, that is, the valve disc 1 does not need to manufacture a separate mold for the reinforcing rib 111.

[0070] See also Figure 4 and Figure 8, at least part of the flexible member 12 extends outside the body 11, and a bend 120 is provided on the flexible member 12. The flexible member 12 on one side of the bend 120 is used to connect to the body 11, and the flexible member 12 on the other side of the bend 120 is used to abut the valve body 2. The flexible member 12 on one side of the bend 120 is stacked with the flexible member 12 on the other side of the bend 120. Specifically: the flexible member 12 includes a first adhesive section 121, a second adhesive section 122 and a sealing section 123 connected in sequence, the first adhesive section 121 is adhered to the side wall 1111 of the body 11, and the second adhesive section 122 is adhered to the inner wall 1112 of the body 11. The first adhesive section 121 and the second adhesive section 122 are located on one side of the bend 120, and the sealing section 123 is located on the other side of the bend 120, so that at least part of the sealing section 123 is stacked with the second adhesive section 122.

[0071] In the present invention, the flexible member 12 is made of silicone, and one of the steps for connecting the flexible member 12 to the body 11 includes: step 1, placing the body 11 in a mold; step 2, injecting the melted flexible member 12 into the mold; step 3, connecting the flexible member 12 to the body 11 after cooling. When the flexible member 12 is connected to the reinforcing rib 111, the reinforcing rib 111 can position the flexible member 12 in step 2, that is, the melted silicone first enters the mold from the pouring port, then fills the gap between the body 11 and the mold, and forms the first adhesive section 121 and / or the second adhesive section 122 after cooling; finally, the melted silicone enters the molding channel of the mold, and forms the sealing section 123 after cooling. In the present invention, at least part of the flexible member 12 extends outside the body 11. This structure is used to ensure the sealing effect of the flexible member 12, that is, when the valve plate 1 closes the exhaust port 20, the flexible member 12 can prevent the oil smoke in the flue from passing through the exhaust port 20 and entering the room.

[0072] In the present invention, a bend 120 is provided on the flexible part 12. The flexible part 12 located on one side of the bend 120 is used to connect to the main body 11, and the flexible part 12 located on the other side of the bend 120 is used to abut the valve body 2. The flexible part 12 located on one side of the bend 120 and the flexible part 12 located on the other side of the bend 120 are stacked.

[0073] When the flexible part 12 located on one side of the bend 120 is stacked with the flexible part 12 located on the other side of the bend 120, the sealing section 123 first abuts the valve body 2, and then the main body 11 abuts the sealing section 123 through the second adhesive section 122; after the sealing section 123 abuts the valve body 2, the "collision between the valve sheet 1 and the valve body 2" is transformed into a collision between the second adhesive section 122 and the sealing section 123, so that the main body 11 hits the valve body 2 after secondary buffering.

[0074] See also Figure 2 、 Figure 3 and Figure 4The body 11 is made of metal, and the flexible member 12 is adhered to the inner wall 1112 of the body 11, and / or the flexible member 12 is adhered to the side wall 1111 of the body 11. In the present invention, the body 11 is made of metal to increase the deformation resistance of the body 11. When the flexible member 12 is adhered to the inner wall 1112 of the body 11, the flexible member 12 can prevent the inner wall 1112 of the body 11 and the valve body 2 from making a metal collision sound; when the flexible member 12 is adhered to the side wall 1111 of the body 11, the flexible member 12 can prevent the side wall 1111 of the body 11 from scratching the user's body, especially the hands.

[0075] See also Figure 4 The sealing section 123 has a length L, where L is ≥ 5 mm, and / or the angle a between the sealing section 123 and the body 11 is ≤ 60°. When L is ≥ 5 mm and a is ≤ 60°, the flexible member 12 absorbs a portion of the impact force generated when the valve disc 1 and the valve body 2 collide through the angle a. The length of the sealing section 123 ensures a sealing effect between the valve disc 1 and the valve body 2 after the flexible member 12 absorbs a portion of the impact force.

[0076] See also Figure 1 、 Figure 2 and Figure 4 The main body 11 is further provided with a guide rib 112 located inside the reinforcing rib 111 . The guide rib 112 is provided on the outer wall 1113 of the main body 11 , and the reinforcing rib 111 is provided on the inner wall 1112 of the main body 11 .

[0077] The weight of the guide rib 112 is greater than the weight of the reinforcing rib 111, and / or the projection of the guide rib 112 on the body 11 is greater than the projection of the reinforcing rib 111 on the body 11. Figure 3 In the embodiment, the main body 11 is arranged horizontally. At this time, the projection of the guide rib 112 on the main body 11 is greater than the projection of the reinforcement rib 111 on the main body 11 .

[0078] See also Figure 6The main body 11 is provided with a mounting plate 13, which is provided with an axial hole 131. A shaft 14 is provided in the axial hole 131, which can be inserted into the valve body 2. A gear 15 is sleeved on one end of the shaft 14. In the present invention, the exhaust valve includes two valve discs 1, each of which is provided with a gear 15. The gears 15 of adjacent valve discs 1 are meshed with each other. After one valve disc 1 of the exhaust valve opens one exhaust port 20, the other valve disc 1 will find it difficult to open the other exhaust port 20 (when oil smoke enters the flue from one exhaust port 20, the other valve disc 1 will find it difficult to obtain sufficient thrust to enable the other valve disc 1 to open the other exhaust port 20). At this time, since the gear 15 on one valve disc 1 is meshed with the gear 15 on the other valve disc 1, during the process of one valve disc 1 opening one exhaust port 20, the gear 15 on one valve disc 1 will pass through the gear 15 on the other valve disc 1 to push the other valve disc 1 to open the other exhaust port 20.

[0079] In the present invention, the mounting plate 13 is detachably mounted on the body 11. Specifically, the valve plate 1 further includes screws. Figure 1 and Figure 6 The body 11 is provided with a through hole 113, and the mounting plate 13 is provided with a threaded hole 133. After the screw passes through the through hole 113, it is threadedly connected to the threaded hole 133. Due to being exposed to oil smoke for a long time, the surfaces of the body 11, gear 15, and flexible member 12 are easily adhered to liquid oil smoke. Therefore, when the mounting plate 13 is detachably mounted on the body 11, the body 11, gear 15, and flexible member 12 are easily disassembled and cleaned. In other embodiments of the present invention, the mounting plate and the body can be connected as a whole by rivets, screws, pins, bolts, or nuts.

[0080] See also Figure 6 A baffle 132 is provided on the mounting plate 13, and the other end of the shaft 14 can abut against the baffle 132. When the other end of the shaft 14 abuts against the baffle 132, the baffle 132 can be used to limit the range of motion of the shaft 14. This structure prevents two adjacent gears 15 from being misaligned with each other.

[0081] See also Figure 5 The outer wall of the flexible member 12 is provided with a counterweight rib 1231 , and the counterweight rib 1231 increases the weight of the outer side of the flexible member 12 to improve the sealing reliability of the flexible member 12 .

[0082] In addition, when the outer wall of the flexible member 12 is provided with a counterweight rib 1231, the flexible member 12 can increase the initial force required by the valve plate 1 to open the exhaust port 20 through the counterweight rib 1231. This structure reduces the probability of the valve plate 1 accidentally opening the exhaust port 20.

[0083] See also Figure 1 、 Figure 2 and Figure 10, a positioning piece 134 is provided on the mounting plate 13, and a mating piece 115 that cooperates with the positioning piece 134 is provided on the main body 11. When the positioning piece 134 and the mating piece 115 cooperate with each other, the mounting plate 13 will be installed to the predetermined position on the main body 11; specifically: a positioning protrusion that is recessed inward is provided on the mounting plate 13, and the positioning protrusion is the positioning piece 134. An inwardly recessed positioning groove is provided on the main body 11, and the positioning groove is the mating piece 115. The positioning protrusion is inserted into the positioning groove to achieve mutual cooperation between the positioning piece 134 and the mating piece 115.

[0084] See also Figure 7 and Figure 8 , the exhaust valve includes:

[0085] The valve body 2 is provided with two exhaust ports 20;

[0086] Two valve plates, each valve plate is the valve plate 1 described in this embodiment, and the valve plate 1 is used to open or close the exhaust port 20;

[0087] A lever 3 is movably provided on the valve body 2;

[0088] The elastic element 5 is provided between the lever 3 and the valve body 2, and is used to drive the lever 3 to move relative to the valve body 2;

[0089] The temperature sensing mechanism 4 has an operating state and a non-operating state. When the temperature sensing mechanism 4 is in the operating state, the lever 3 is fixedly connected to the valve body 2 through the temperature sensing mechanism 4. When the temperature sensing mechanism 4 is in the non-operating state, the temperature sensing mechanism 4 and the lever 3 are separated. After the temperature sensing mechanism 4 and the lever 3 are separated, the elastic element 5 drives the lever 3 to move relative to the valve body 2, so that the lever 3 pushes the valve plate 1 to close the exhaust port 20.

[0090] When the valve body 2 is mounted on a wall or flue, the exhaust port 20 is tilted and each valve plate 1 is located above the exhaust port 20. When the exhaust port 20 is tilted and each valve plate 1 is located above the exhaust port 20, the valve plate 1 always tends to close the exhaust port 20.

[0091] In the present invention, the temperature sensing mechanism 4 includes three structures: 1. Figure 8 and Figure 9The temperature sensing mechanism 4 includes a first metal plate 41, a second metal plate 42, a brazing material, a transmission plate 43 and a stop plate 44. The first metal plate 41 is provided on the valve body 2. The first metal plate 41 and the second metal plate 42 are fixedly connected by the brazing material. The stop plate 44 is fixedly connected to the valve body 2. The transmission plate 43 is detachably provided on the second metal plate 42, and the transmission plate 43 is clamped between the shifting rod 3 and the stop plate 44. When the temperature sensing mechanism 4 is in the working state, the brazing material is not melted, and the shifting rod 3 cannot be relative to the valve body. 2 movement; when the temperature sensing mechanism 4 is in a non-working state, the brazing material melts, and the first metal plate 41 and the second metal plate 42 are separated. After the first metal plate 41 and the second metal plate 42 are separated, the transmission plate 43 cannot prevent the movement of the lever 3, that is, the elastic element 5 drives the lever 3 to move relative to the valve body 2, so that the lever 3 pushes the valve plate 1 to close the exhaust port 20. 2. The temperature sensing mechanism 4 includes a first metal plate, a second metal plate and a brazing material. The first metal plate is provided on the valve body, and the first metal plate and the second metal plate are connected. The second metal plate is fixedly connected by solder and is provided on the shift rod 3; when the temperature sensing mechanism 4 is in the working state, the solder is not melted, and the shift rod 3 cannot move relative to the valve body 2; when the temperature sensing mechanism 4 is in the non-working state, the solder is melted, and the first metal plate is separated from the second metal plate. After the first metal plate is separated from the second metal plate, the second metal plate cannot prevent the movement of the shift rod 3, that is, the elastic element 5 drives the shift rod 3 to move relative to the valve body 2, so that the shift rod 3 pushes the valve disc 1 to close the exhaust port 20. 3. The temperature sensing mechanism 4 includes a metal plate and a solder, and the valve body and the metal plate are fixedly connected by solder, and the metal plate is provided on the shift rod 3; when the temperature sensing mechanism 4 is in the working state, the solder is not melted, and the shift rod 3 cannot move relative to the valve body 2; when the temperature sensing mechanism 4 is in the non-working state, the solder is melted, and the valve body is separated from the metal plate. After the valve body and the metal plate are separated, the metal plate cannot prevent the movement of the shift rod 3, that is, the elastic element 5 drives the shift rod 3 to move relative to the valve body 2, so that the shift rod 3 pushes the valve disc 1 to close the exhaust port 20.

[0092] See also Figure 8 and Figure 10 The valve body 2 is provided with a first valve seat 21 and a second valve seat 22. Each valve disc 1 is rotatably connected to the first valve seat 21 via a shaft 14. The lever 3 is rotatably mounted on the second valve seat 22. The vertical projection of at least a portion of the shaft 14 coincides with the vertical projection of the lever 3, ensuring that the rotation angle of each valve disc 1 relative to the valve body 2 is ≤ 90°. This structure ensures that the valve disc 1 can always move toward closing the exhaust port 20 under the influence of its own weight.

[0093] Combine Figure 8 and Figure 10 When the valve plate 1 closes the exhaust port 20, the mounting plate 13 is in Figure 10 When the valve plate 1 opens the exhaust port 20 to the maximum position, the mounting plate 13 is in the Figure 10 The position of the mounting plate 13' is Figure 10 It can be seen that the rotation angle of the mounting plate 13 ′ relative to the valve body 1 is less than 90°.

[0094] from Figure 10 It can also be found that the boundary position of the lever 3 is 301, that is, the position between the two labels 301 is the projection of the lever 3 on the vertical plane, and part of the shaft 14 is located outside the label 301, that is, the projection of at least part of the shaft 14 on the vertical plane coincides with the projection of the lever 3 on the vertical plane.

[0095] In other embodiments of the present invention, at least part of the projection of the shaft on the vertical plane coincides with the projection of the second valve seat on the vertical plane, and the rotation angle of each valve plate relative to the valve body is ≤90°; or, at least part of the projection of the shaft on the vertical plane coincides with the projection of the shift rod on the vertical plane, at least part of the projection of the shaft on the vertical plane coincides with the projection of the second valve seat on the vertical plane, and the rotation angle of each valve plate relative to the valve body is ≤90°.

[0096] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. Valve plate, used for exhaust valve, characterized by include: The main body is movably arranged on the valve body, A flexible member, the flexible member being provided on the main body, and the main body abutting against the valve body through the flexible member to close the exhaust port on the valve body; Wherein, the main body is provided with a reinforcing rib. When the flexible member is provided on the main body, the reinforcing rib is located inside the flexible member, and the spacing distance between the reinforcing rib and the flexible member is ≤20 mm.

2. The valve plate according to claim 1, characterized in that: The spacing distance between the reinforcing rib and the flexible part is ≤5mm, and the reinforcing rib extends from the main body toward the exhaust port on the valve body. When the main body abuts the valve body through the flexible part to close the exhaust port on the valve body, the reinforcing rib passes through the exhaust port on the valve body.

3. The valve plate according to claim 2, characterized in that: The outer wall of the flexible member is provided with a counterweight rib; And / or, at least part of the flexible part extends outside the main body, a bend is provided on the flexible part, the flexible part located on one side of the bend is used to connect to the main body, the flexible part located on the other side of the bend is used to abut the valve body, and the flexible part located on one side of the bend is stacked with the flexible part located on the other side of the bend.

4. The valve plate according to claim 1, wherein: The body is made of metal, the flexible member is adhered to the inner wall of the body, and / or the flexible member is adhered to the side wall of the body.

5. The valve plate according to claim 1, wherein: The flexible member includes a first adhesive section, a second adhesive section, and a sealing section connected in sequence, wherein the first adhesive section is adhered to the side wall of the body, the second adhesive section is adhered to the inner wall of the body, and at least a portion of the sealing section and the second adhesive section are stacked; Wherein, the length of the sealing section is ≥5 mm, and / or the angle between the sealing section and the main body is ≤60°.

6. The valve plate according to claim 1, wherein: The body is further provided with a guide rib located inside the reinforcing rib, the guide rib being provided on the outer wall of the body, and the reinforcing rib being provided on the inner wall of the body; The weight of the guide rib is greater than the weight of the reinforcing rib, and / or the projection of the guide rib on the main body is greater than the projection of the reinforcing rib on the main body.

7. The valve plate according to claim 1, wherein: The main body is provided with a mounting plate, the mounting plate is provided with an axial hole, a shaft rod which can be inserted into the valve body is provided in the axial hole, and a gear is sleeved on one end of the shaft rod.

8. The valve plate according to claim 1, wherein: The mounting plate is detachably mounted on the main body; and / or, a positioning piece is provided on the mounting plate, and a matching piece that matches the positioning piece is provided on the main body.

9. Exhaust valve, characterized in that include: A valve body, wherein the valve body is provided with two exhaust ports; Two valve plates, each valve plate being a valve plate according to any one of claims 1 to 8, and the valve plate is used to open or close the exhaust port; a shift rod movably disposed on the valve body; an elastic element, the elastic element being provided between the shifting rod and the valve body, and being used for driving the shifting rod to move relative to the valve body; a temperature sensing mechanism, the temperature sensing mechanism having an operating state and a non-operating state. When the temperature sensing mechanism is in the operating state, the shifting rod is fixedly connected to the valve body through the temperature sensing mechanism; when the temperature sensing mechanism is in the non-operating state, the temperature sensing mechanism is separated from the shifting rod. After the temperature sensing mechanism and the shifting rod are separated, the elastic element drives the shifting rod to move relative to the valve body, so that the shifting rod pushes the valve plate to close the exhaust port; Wherein, when the valve body is installed on a wall or a flue, the exhaust port is arranged at an angle.

10. The exhaust valve according to claim 9, wherein The valve body is provided with a first valve seat and a second valve seat, each valve plate is rotatably connected to the first valve seat via a shaft, and the shifting rod is rotatably provided on the second valve seat; In which, at least part of the projection of the shaft on the vertical plane coincides with the projection of the shift rod on the vertical plane, and the rotation angle of each valve plate relative to the valve body is ≤90°; and / or, at least part of the projection of the shaft on the vertical plane coincides with the projection of the second valve seat on the vertical plane, and the rotation angle of each valve plate relative to the valve body is ≤90°.

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