Exhaust valve

Abstract

The utility model relates to an exhaust valve. The structure of the exhaust valve is further optimized. The exhaust valve comprises a valve body, the valve body comprises a body and a base plate, the base plate is provided with at least one exhaust port, the body is provided with an exhaust channel, the base plate is arranged on the body and extends from the body to the center of the exhaust channel, the exhaust channel is provided with a medium inlet and a medium outlet, and the medium inlet and the medium outlet are communicated with each other. All the exhaust ports are positioned between the medium inlet and the medium outlet; each valve plate is movably arranged on the valve body and is used for opening or closing one exhaust port; the base plate is provided with a guiding piece used for guiding a medium to flow towards the exhaust port. And / or a detachable base is arranged on the valve body, and when the base is arranged on the valve body, a mounting hole for mounting the valve plate is defined by the base and the valve body.

Description

Technical Field

[0001] This utility model relates to an exhaust valve. Background Technology

[0002] The existing exhaust valve includes a valve body, a valve plate, a connecting rod, and a torsion spring. The valve body is provided with an exhaust port. One end of the connecting rod is rotatably connected to the valve plate, and the other end of the connecting rod is rotatably connected to the valve body. One torsion arm of the torsion spring is located on the connecting rod, and the other torsion arm of the torsion spring is located on the valve body. The torsion spring is used to drive the connecting rod to move the valve plate relative to the valve body, so as to open or close the exhaust port.

[0003] However, existing exhaust valves still have defects, including but not limited to: poor smoke extraction effect, complex structure, difficult disassembly and assembly, inability to change smoke extraction effect after installation, and inability to automatically change smoke extraction effect. Utility Model Content

[0004] The problem to be solved by this utility model is to provide an exhaust valve with further optimized structure.

[0005] To solve the above problems, this utility model provides the following technical solution:

[0006] The exhaust valve includes:

[0007] A valve body, comprising a body and a base plate, wherein the base plate is provided with at least one exhaust port, the body is provided with an exhaust channel, the base plate is disposed on the body and extends from the body toward the center of the exhaust channel, the exhaust channel is provided with a medium inlet and a medium outlet, and all exhaust ports are located between the medium inlet and the medium outlet;

[0008] At least one valve plate, each valve plate being movably disposed in the valve body and used to open or close one of the exhaust ports;

[0009] The substrate is provided with a guide for guiding the medium (including but not limited to oil fumes, odorous gases, and water vapor) to flow towards the exhaust port; and / or, the valve body is provided with a detachable base, and when the base is provided on the valve body, the base and the valve body form a mounting hole for installing the valve plate.

[0010] In this invention, each valve plate is movably mounted on the valve body. This structure simplifies the structure of the exhaust valve by omitting the connecting rod.

[0011] In this invention, a guide member is provided on the substrate to guide the medium to flow towards the exhaust port. When the substrate is provided with the guide member to guide the medium to flow towards the exhaust port, the guide member can reduce the time the medium remains in the exhaust valve. This design solves the problem of poor smoke extraction effect of the exhaust valve.

[0012] In this invention, a detachable base is provided on the valve body. When the base is on the valve body, the base and the valve body form a mounting hole for installing the valve plate; in other words, after the base is removed from the valve body, the valve plate can be removed from the valve body. This design solves the problem of difficult disassembly and assembly of the exhaust valve, especially the problem of difficult disassembly and assembly of the valve plate.

[0013] Furthermore, the exhaust valve also includes a pressure transformer pipe with a pressure transformer channel. The pressure transformer pipe is detachably installed in the exhaust channel. The pressure transformer pipe includes a pressure tapping section and a pressure transformer section. The cross-sectional area of ​​the pressure tapping section is different from that of the pressure transformer section. The pressure transformer section is located between the pressure tapping section and all exhaust ports.

[0014] In this invention, the transformer tube includes a pressure tapping section and a transformation section. The cross-sectional area of ​​the pressure tapping section differs from that of the transformation section. The transformation section is located between the pressure tapping section and all exhaust ports. When the cross-sectional area of ​​the pressure tapping section differs from that of the transformation section, and the transformation section is located between the pressure tapping section and all exhaust ports, at least one of the pressure tapping section, the transformation section, and the exhaust ports will experience a Venturi effect. With this design, the transformer tube enhances the smoke extraction effect of the exhaust valve by changing the gas pressure of the medium within the exhaust valve.

[0015] In this invention, the transformer pipe is detachably installed in the exhaust channel. When the transformer pipe is detachably installed in the exhaust channel, even if the exhaust valve is installed in the building, the transformer pipe can be removed from the exhaust valve. This design solves the problem that the exhaust valve's smoke extraction effect cannot be changed after installation.

[0016] Furthermore, the transformer tube is fixedly connected to the valve body by a sealing ring, which is located between the transformer section and all exhaust ports;

[0017] And / or, the cross-sectional area of ​​the pressure tapping section is different from the cross-sectional area of ​​the exhaust port, the cross-sectional area of ​​the pressure transformer section is different from the cross-sectional area of ​​the exhaust port, and the cross-sectional area of ​​the pressure transformer section is greater than the cross-sectional area of ​​the pressure tapping section, which is greater than the cross-sectional area of ​​the exhaust port.

[0018] In this invention, when the transformer pipe and valve body are fixedly connected by a sealing ring, and the sealing ring is located between the transformer section and all exhaust ports, the space between the transformer pipe and the exhaust channel will be isolated from all exhaust ports. In other words, the second cavity is not connected to any of the exhaust ports. This design prevents the medium in the space between the transformer pipe and the valve body from entering the exhaust ports and affecting the smoke extraction effect of the exhaust ports.

[0019] In this invention, when the cross-sectional area of ​​the transformer section > the cross-sectional area of ​​the pressure tapping section > the cross-sectional area of ​​the exhaust port, the pressure in the transformer section > the pressure in the pressure tapping section > the pressure at the exhaust port. According to Bernoulli's principle, a negative pressure will be formed at the exhaust port, meaning the medium will experience a Venturi effect at the exhaust port. This design creates a negative pressure at the exhaust port to enhance the smoke extraction effect (the smoke extraction effect at the exhaust port includes the flow rate of the medium passing through the exhaust port per unit time).

[0020] Furthermore, when the transformer pipe is fixedly connected to the valve body via a sealing ring, the sealing ring is located between the outer wall of the transformer pipe and the wall of the exhaust channel; and / or, the side wall of the transformer pipe is provided with a pressure relief groove.

[0021] In this invention, when the sealing ring is located between the outer wall of the transformer tube and the wall of the exhaust channel, the transformer tube will have difficulty moving axially relative to the valve body; when the sealing ring is located between the side wall of the transformer tube and the side wall of the base plate, the transformer tube will have difficulty moving radially relative to the valve body.

[0022] Furthermore, the transformer tube also includes a tapered section, which is a tapered section. The pressure tapping section is located between the tapered section and the tapered section. The tapered section is provided with outwardly extending ribs. The sealing ring is located between the ribs and the valve body.

[0023] Wherein, the cross-sectional area of ​​the tapering section is greater than the cross-sectional area of ​​the pressure tapping section, which is greater than the cross-sectional area of ​​the exhaust port.

[0024] In this invention, when the gradually expanding section is provided with outwardly extending ribs, the ribs are used to increase the deformation resistance of the gradually expanding section.

[0025] In this invention, when the cross-sectional area of ​​the converging section is greater than the cross-sectional area of ​​the pressure tapping section and the cross-sectional area of ​​the exhaust port, the pressure in the converging section is greater than the pressure in the pressure tapping section and the pressure in the exhaust port. According to Bernoulli's principle, a negative pressure will be formed at the exhaust port, meaning the medium will experience a Venturi effect at the exhaust port. This design creates a secondary negative pressure in the exhaust valve, thereby enhancing the smoke extraction effect at the exhaust port.

[0026] Furthermore, the tapered section is provided with outwardly extending protrusions, at least a portion of which are located outside the rib. When the sealing ring is located between the rib and the valve body, the protrusions abut against the side wall of the valve body.

[0027] And / or, the base is detachably disposed on the substrate, and when the substrate is provided with a detachable base, the base and the substrate are fixedly connected by screws.

[0028] In this invention, the protrusion is used to increase the deformation resistance of the tapered section. When the protrusion abuts against the side wall of the valve body, the protrusion can be used to limit the axial position of the transformer tube on the valve body.

[0029] In this invention, the first magnetic attractor and the second magnetic attractor are used to ensure the reliability of the valve plate in closing the exhaust port.

[0030] Furthermore, at least one of the transformer pipe and the valve body is provided with an installation channel. When the transformer pipe is located in the exhaust channel and the transformer pipe is fixedly connected to the valve body by a sealing ring, the sealing ring and the installation channel are located on both sides of the transformer pipe.

[0031] And / or, the valve body is provided with a connecting part, the connecting part including a vertically arranged guide section and a horizontally arranged locking section, the guide section being connected to the locking section.

[0032] In this invention, the mounting channel allows the second cavity to communicate with the external environment, enabling the second cavity to acquire ambient air pressure; the mounting channel can also be used to place the data cable of the ambient air pressure sensor; when the sealing ring and the mounting channel are located on both sides of the transformer tube, the reliability of the sealing ring can be increased by setting the mounting channel away from the sealing ring.

[0033] Furthermore, at least a portion of the transformer channel corresponds to the exhaust port, and a sealing ring is provided on the valve plate;

[0034] The pressure tapping section is provided with a pressure tapping hole, and a real-time air pressure sensor is provided in the pressure tapping hole; and / or, an ambient air pressure sensor is provided between the transformer pipe and the exhaust channel.

[0035] Furthermore, the exhaust valve also includes a driver, which is disposed on the valve body and directly or indirectly drives the valve plate to rotate relative to the valve body;

[0036] Alternatively, the valve body is provided with at least one first magnetic attractor, and the valve plate is provided with at least one second magnetic attractor. When each valve plate is movably disposed on the valve body and one of the exhaust ports is closed, the second magnetic attractor is attracted to the first magnetic attractor.

[0037] Alternatively, the valve body may have at least one first stepped hole, the first stepped hole may have a first magnetic attraction element, the first stepped hole may have a vertically arranged first stepped surface, the first magnetic attraction element may abut against the first stepped surface, and the first stepped surface may face away from the valve plate; the valve plate may have at least one second magnetic attraction element, and when each valve plate is movably disposed on the valve body and one of the exhaust ports is closed, the second magnetic attraction element is attracted to the first magnetic attraction element;

[0038] Alternatively, the valve plate is provided with at least one second step hole, the second step hole is provided with a second magnetic attractor, the second step hole includes a vertically arranged second step surface, the second magnetic attractor can abut against the second step surface, and the second step surface faces away from the transformer tube; the valve body is provided with at least one first magnetic attractor, when each valve plate is movably disposed on the valve body and one of the exhaust ports is closed, the second magnetic attractor is attracted to the first magnetic attractor.

[0039] Furthermore, the exhaust valve also includes:

[0040] A real-time barometric pressure sensor is used to detect real-time barometric pressure values.

[0041] A driver, wherein the driver is disposed in the valve body;

[0042] A transmission mechanism, wherein at least one valve plate is connected to the driver via the transmission mechanism;

[0043] The controller is electrically connected to the real-time air pressure sensor. After the real-time air pressure sensor converts the detected real-time air pressure value into an electrical signal and transmits it to the controller, the controller controls the driver to work or stop working.

[0044] In this design, after the controller activates the actuator, the actuator drives all valve plates to move relative to the valve body via the transmission mechanism, thereby changing the opening degree of each valve plate relative to one of the exhaust ports. This design enables the exhaust valve to automatically adjust its smoke extraction efficiency. Attached Figure Description

[0045] Figure 1 This is a perspective view of the exhaust valve in a preferred embodiment of the present invention (omitting a valve plate and the housing);

[0046] Figure 2 This is a front view of the exhaust valve in a preferred embodiment of the present invention;

[0047] Figure 3 for Figure 2 Sectional view at point AA;

[0048] Figure 4 This is a perspective view of the exhaust valve in a preferred embodiment of the present invention;

[0049] Figure 5 This is a perspective view of the exhaust valve in a preferred embodiment of the present invention (two valve plates are omitted);

[0050] Figure 6 This is a top view of the exhaust valve in a preferred embodiment of the present invention;

[0051] Figure 7 for Figure 6 Sectional view at point BB;

[0052] Figure 8 This is a top view of the exhaust valve in a preferred embodiment of the present invention (housing omitted);

[0053] Figure 9 for Figure 8 Sectional view at CC;

[0054] Figure 10 This is a rear view of the exhaust valve in a preferred embodiment of the present invention;

[0055] Figure 11 for Figure 10 Sectional view at point DD;

[0056] Figure 12 This is a perspective view of the transformer in a preferred embodiment of the present invention. Detailed Implementation

[0057] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0058] See Figure 1 , Figure 2 and Figure 3 The exhaust valve includes:

[0059] Valve body 1 includes a body 101 and a base plate 102. The base plate 102 is provided with at least one exhaust port 111. The body 101 is provided with an exhaust channel 11. The base plate 102 is disposed on the body 101 and extends from the body 101 toward the center of the exhaust channel 11. The exhaust channel 11 is provided with a medium inlet 113 and a medium outlet 114. All exhaust ports 111 are located between the medium inlet 113 and the medium outlet 114.

[0060] At least one valve plate 2, each valve plate 2 is movably disposed on the valve body 1 and used to open or close one of the exhaust ports 111;

[0061] The base plate 102 is provided with a guide member 112 for guiding the medium to flow toward the exhaust port 111; the valve body 1 is provided with a detachable base 103. When the base 103 is provided on the valve body 1, the base 103 and the valve body 1 form a mounting hole 1031 for mounting the valve plate 2.

[0062] In other embodiments of this utility model, the substrate is provided with a guide for guiding the medium to flow toward the exhaust port; or, the substrate is provided with a detachable base, and when the base is provided on the substrate, the base and the substrate form a mounting hole for mounting the valve plate.

[0063] Preferably, the base 103 is detachably disposed on the substrate 102. When the base 103 is disposed on the substrate 102, the base 103 and the substrate 102 form a mounting hole 1031 for mounting the valve plate 2. In other embodiments of the present invention, the body is provided with a detachable base; the base is detachably disposed on the substrate and the body.

[0064] In this invention, each valve plate 2 is movably mounted on the valve body 1. This structure simplifies the exhaust valve structure by omitting connecting rods. A guide member 112 is provided on the base plate 102 to guide the medium to flow towards the exhaust port 111. When the base plate 102 has the guide member 112, the guide member 112 can reduce the time the medium remains in the exhaust valve. This structure solves the problem of poor smoke extraction effect of the exhaust valve. A detachable base 103 is provided on the valve body 1. When the base 103 is mounted on the valve body 1, the base 103 and the valve body 1 form a mounting hole 1031 for mounting the valve plate 2. In other words, after the base 103 is removed from the base plate 102, the valve plate 2 can be removed from the valve body 1. This structure solves the problem of difficult disassembly and assembly of the exhaust valve.

[0065] See Figure 5 , Figure 6 and Figure 7 The exhaust valve also includes a pressure transformer pipe 3, which has a pressure transformer channel 31. The pressure transformer pipe 3 is detachably installed in the exhaust channel 11. The pressure transformer pipe 3 includes a pressure tapping section 302 and a pressure transformer section. The pressure transformer section is a gradually expanding section 303. The cross-sectional area of ​​the pressure tapping section 302 is different from the cross-sectional area of ​​the gradually expanding section 303. The gradually expanding section 303 is located between the pressure tapping section 302 and all exhaust ports 111. In other embodiments of this utility model, the pressure transformer section is a gradually contracting section; or, the pressure transformer section is a straight section.

[0066] In this invention, the transformer tube 3 includes a pressure tapping section 302 and a diverging section 303. The cross-sectional area of ​​the pressure tapping section 302 is different from that of the diverging section 303. The diverging section 303 is located between the pressure tapping section 302 and all the exhaust ports 111. When the cross-sectional area of ​​the pressure tapping section 302 is different from that of the diverging section 303, and the diverging section 303 is located between the pressure tapping section 302 and all the exhaust ports 111, at least one of the pressure tapping section 302, the transformer section 303, and the exhaust ports 111 will produce a Venturi effect.

[0067] In this embodiment, the cross-sectional area of ​​the transformer channel 31 located at the pressure tapping section 302 is A, and the sum of the cross-sectional areas of all exhaust ports 111 is B, where A > B and AB ≤ 0.35B. When A > B, the pressure at A is greater than the pressure at B, so that the adsorption force at the exhaust port is greater than the adsorption force at the transformer channel A. This structure allows the adsorption force of the exhaust valve at its exhaust port 111 to reach its maximum, so as to minimize the retention of medium in the transformer tube 3.

[0068] See Figure 3 The exhaust passage 11 is located on one side of the valve body 1 and has a medium inlet 113. All exhaust ports 111 are located on the other side of the valve body 1, which is located in the exhaust passage 11. The transformer pipe 3 is inserted into the exhaust passage 11 through the medium inlet 113. When the exhaust valve is installed in a building, the transformer pipe 3 can exit the exhaust passage 11 through the medium inlet 113. This structure has the following advantages:

[0069] 1. It can reduce the number of exhaust valves required for the same building; exhaust valves on different floors can use the same specifications, and the problem of different smoke exhaust difficulties on different floors can be solved by simply setting different transformer pipes 3.

[0070] 2. After installation, the exhaust valve changes its smoke extraction effect through the transformer pipe 3. The transformer pipe 3 is located in front of the exhaust port 111. Therefore, the transformer pipe 3 can be installed or replaced with the assistance of external tools without disassembling the exhaust valve. In other words, the transformer pipe 3 is particularly suitable for the renovation of exhaust valves in old residential areas.

[0071] See Figure 5 , Figure 6 and Figure 7 The transformer pipe 3 and the valve body 1 are fixedly connected by a sealing ring 304, which is located between the expanding section 303 and all the exhaust ports 111. When the transformer pipe 3 and the valve body 1 are fixedly connected by a sealing ring 304, and the sealing ring 304 is located between the expanding section 303 and all the exhaust ports 111, the transformer pipe 3 and the exhaust channel 11 form a second cavity 10, and the sealing ring 304 separates the second cavity 10 from all the exhaust ports 111.

[0072] See Figure 10 , Figure 11 and Figure 12The cross-sectional area of ​​the pressure tapping section 302 is different from that of the exhaust port 111, and the cross-sectional area of ​​the expanding section 303 is different from that of the exhaust port 111. The cross-sectional area of ​​the expanding section 303 is greater than that of the pressure tapping section 302, which is greater than that of the exhaust port 111. When the cross-sectional area of ​​the expanding section 303 is greater than that of the pressure tapping section 302, which is greater than that of the exhaust port 111, the pressure of the expanding section 303 is greater than that of the pressure tapping section 302, which is greater than that of the exhaust port 111. According to Bernoulli's principle, a negative pressure will be formed at the exhaust port 111, that is, the medium will produce a Venturi effect at the exhaust port 111.

[0073] See Figure 8 , Figure 9 and Figure 12 The transformer tube 3 has an installation groove 33 on its outer wall. The installation groove 33 can be used to install a sealing ring 304. When the transformer tube 3 and the valve body 1 are fixedly connected by the sealing ring 304, the sealing ring 304 is located between the outer wall of the transformer tube 3 and the wall of the exhaust channel 11. When the sealing ring 304 is located between the outer wall of the transformer tube 3 and the wall of the exhaust channel 11, the transformer tube 3 will have difficulty moving axially relative to the valve body 1. In other embodiments of this utility model, when the transformer tube and the valve body are fixedly connected by the sealing ring, the sealing ring is located between the side wall of the transformer tube and the side wall of the base plate; or, when the transformer tube and the valve body are fixedly connected by the sealing ring, the sealing ring is located between the outer wall of the transformer tube and the wall of the exhaust channel; when the transformer tube and the valve body are fixedly connected by the sealing ring, the sealing ring is located between the side wall of the transformer tube and the side wall of the base plate.

[0074] Preferably, the sidewall of the transformer tube 3 is provided with a pressure relief groove 3032. The pressure relief groove 3032 is used to reduce the resistance when the transformer tube 3 separates from the substrate 102.

[0075] See Figure 4 , Figure 7 and Figure 11 The transformer tube 3 also includes a tapered section 301, a pressure tapping section 302 located between the tapered section 301 and the expanding section 303, and an outwardly extending rib 3031 on the expanding section 303. A sealing ring 304 is located between the rib 3031 and the valve body 1. The cross-sectional area of ​​the tapered section 301 is greater than the cross-sectional area of ​​the pressure tapping section 302, which is greater than the cross-sectional area of ​​the exhaust port 111. When the expanding section 303 has an outwardly extending rib 3031, the rib 3031 is used to increase the deformation resistance of the expanding section 303.

[0076] In this invention, the transformer tube 3 may also include other structures. For example, in other embodiments of this invention, the transformer tube includes a tapered section and a pressure tapping section connected in sequence; or, the transformer tube includes a pressure tapping section and a expanding section connected in sequence; or, the transformer tube includes a expanding section, a pressure tapping section and a tapered section connected in sequence; or, the transformer tube includes a tapered section, a pressure tapping section, a expanding section and a connecting section connected in sequence.

[0077] In this invention, when the cross-sectional area of ​​the tapering section 301 is greater than the cross-sectional area of ​​the pressure tapping section 302 and the cross-sectional area of ​​the exhaust port 111, the pressure of the tapering section 301 is greater than the pressure of the pressure tapping section 302 and the pressure of the exhaust port 111. According to Bernoulli's principle, a negative pressure will be formed at the exhaust port 111, that is, the medium will produce a Venturi effect at the exhaust port 111.

[0078] Preferred, such as Figure 12 As shown, the axial dimension of the tapering section 301 gradually decreases, the axial dimension of the pressure-taking section 302 remains unchanged, and the axial dimension of the expanding section 303 gradually increases. In other embodiments of this utility model, the axial dimension of the tapering section away from the pressure-taking section is greater than the axial dimension of the tapering section closer to the pressure-taking section; or, the axial dimension of the expanding section away from the pressure-taking section is greater than the axial dimension of the expanding section closer to the pressure-taking section.

[0079] See Figure 7 The tapered section 301 is provided with an outwardly extending protrusion 3011. At least part of the protrusion 3011 is located outside the rib 3031. When the sealing ring 304 is located between the rib 3031 and the valve body 1, the protrusion 3011 abuts against the side wall of the valve body 1. The protrusion 3011 is used to increase the deformation resistance of the tapered section 301. When the protrusion 3011 abuts against the side wall of the valve body 1, the protrusion 3011 can be used to limit the axial position of the transformer tube 3 on the valve body 1.

[0080] See Figure 10 and Figure 11 When the base plate 102 is provided with a detachable base 103, the base 103 and the base plate 102 are fixedly connected by screws (not marked). This structure facilitates the replacement of the valve plate 2.

[0081] See Figure 7 and Figure 12At least one of the transformer pipe 3 and the valve body 1 is provided with an installation channel 34. When the transformer pipe 3 is located in the exhaust channel 11 and the transformer pipe 3 is fixedly connected to the valve body 1 by a sealing ring 304, the sealing ring 304 and the installation channel 34 are located on both sides of the transformer pipe 3. Specifically, in this embodiment, the installation channel 34 is located in the transformer pipe 3. In this utility model, the installation channel 34 allows the second cavity 10 to communicate with the external environment, that is, the second cavity 10 obtains the ambient air pressure; the installation channel 34 can also be used to place the data line of the ambient air pressure sensor 8; when the sealing ring 304 and the installation channel 34 are located on both sides of the transformer pipe 3, the reliability of the sealing ring 304 can be increased by setting the installation channel 34 at a position away from the sealing ring 304.

[0082] See Figure 6 The valve body 1 is provided with a connecting part 12, which includes a vertically arranged guide section and a horizontally arranged locking section, and the guide section and the locking section are connected.

[0083] See Figure 3 , Figure 4 and Figure 7 At least part of the transformer channel 31 corresponds to the exhaust port 111, and the valve plate 2 is provided with a sealing ring 25; the valve plate 2 abuts against the valve body 1 through the sealing ring 25 so as to realize the valve plate 2 closing the exhaust port 111.

[0084] See Figure 7 , Figure 8 and Figure 9 The pressure tapping section 302 is provided with a pressure tapping hole 32, and a real-time air pressure sensor 7 is provided in the pressure tapping hole 32. An ambient air pressure sensor 8 is provided between the transformer pipe 3 and the exhaust channel 11.

[0085] See Figure 11 The exhaust valve also includes a driver 4, which is located on the valve body 1. The driver 4 directly or indirectly drives the valve plate 2 to rotate relative to the valve body 1.

[0086] In this utility model, the exhaust valve also includes a driver 4, a transmission mechanism 5, and a limiting mechanism (not marked). The transmission mechanism 5 includes a driving gear, a driven gear, and at least one intermediate gear. The driving gear is located on the driver 4 and meshes with one intermediate gear. One of the intermediate gears meshes with the driven gear. The driven gear is located on one of the valve plates 2. After the driver 4 drives one intermediate gear to rotate via the driving gear, one of the intermediate gears drives the driven gear to rotate, so that the driven gear drives the valve plate 2 to move relative to the valve body 1. The limiting mechanism includes a limiting shaft, a limiting groove, a first limiting switch, and a second limiting switch. The limiting shaft is located on the driven gear. The valve body also includes a plate, a limiting groove, a first limiting switch, and a second limiting switch. The limit shaft is inserted into the limit groove of the plate. The driven gear drives the limit shaft to move along the limit groove to control the opening degree of each valve plate 2 relative to one of the exhaust ports 111 (the opening degree of the exhaust port 111 is the rotation angle of the valve plate 2 relative to the valve body 1). The first limit switch and the second limit switch are located on both sides of the limit groove of the plate. The first limit switch and the second limit switch are electrically connected to the controller 6 respectively. The driven gear drives the limit shaft to move along the limit groove, so that the limit shaft can contact the first limit switch or the second limit switch. When the limit shaft contacts the first limit switch or the second limit switch, the first limit switch or the second limit switch will transmit an electrical signal to the controller 6, so that the controller 6 controls the driver 4 to work or stop working. In other embodiments of this utility model, the limiting mechanism includes a limiting shaft and a limiting groove, the limiting shaft being disposed on the valve body, and the limiting groove being disposed on the intermediate gear or the driven gear; or, the limiting mechanism includes a limiting shaft, a first limiting switch, and a second limiting switch, the limiting shaft being disposed on the driven gear, the first limiting switch and the second limiting switch being disposed on the valve body, and the first limiting switch and the second limiting switch being electrically connected to the controller respectively; or, the limiting mechanism includes an encoder, the encoder being disposed on the driver, and the encoder being electrically connected to the controller; or, the limiting mechanism includes a limiting shaft and a limiting groove, the limiting shaft being disposed on the driven gear, the valve body further includes a plate, the limiting groove being disposed on the plate, the limiting shaft being inserted into the limiting groove, and the driven gear driving the limiting shaft to move along the limiting groove.

[0087] In addition, in other embodiments of this utility model, there may be one intermediate gear or two intermediate gears; or, the transmission mechanism includes a driving gear and a driven gear, with the driving gear located on the driver and the driven gear located on the valve plate; or, the transmission mechanism includes a driving wheel and the valve plate located on the driving wheel; or, the driver may be a motor, and the transmission mechanism includes a gear and a rack, with the rack located on the valve plate and the gear located on the driver; or, the driver includes two motors, and the transmission mechanism includes a chain, with one end of the chain located on one motor and the other end located on the other motor, and the valve plate located on the chain; or, the transmission mechanism includes one or two gears.

[0088] See Figure 1 , Figure 3 and Figure 10 The valve body 1 is provided with at least one first magnetic attractor 16, and the valve plate 2 is provided with at least one second magnetic attractor 23. When each valve plate 2 is movably disposed on the valve body 1 to close one of the exhaust ports 111, the second magnetic attractor 23 is attracted to the first magnetic attractor 16. The first magnetic attractor 16 and the second magnetic attractor 23 are used to ensure the reliability of the valve plate 2 in closing the exhaust port 111. Specifically, the valve body 1 is provided with at least one first stepped hole 104, the first stepped hole 104 is provided with the first magnetic attractor 16, and the first stepped hole 104 includes a vertically arranged first step. Surface 1041, the first magnetic member 16 can abut against the first stepped surface 1041, and the first stepped surface 1041 faces away from the valve plate 2; the valve plate 2 is provided with at least one second stepped hole 24, the second stepped hole 24 is provided with a second magnetic member 23, the second stepped hole 24 includes a vertically arranged second stepped surface (not marked), the second magnetic member 23 can abut against the second stepped surface, and the second stepped surface faces away from the transformer tube 3; when each valve plate 2 is movably disposed on the valve body 1 to close one of the exhaust ports 111, the second magnetic member 23 is attracted to the first magnetic member 16. The first stepped surface 1041 and the second stepped surface are used for positioning and for increasing the connection strength of the first magnetic member 16 and the second magnetic member 23.

[0089] In other embodiments of this utility model, the valve body is provided with at least one first stepped hole, the first stepped hole is provided with a first magnetic attractor, the first stepped hole includes a vertically arranged first stepped surface, the first magnetic attractor can abut against the first stepped surface, and the first stepped surface faces away from the valve plate; the valve plate is provided with at least one second magnetic attractor, when each valve plate is movably disposed on the valve body and one exhaust port is closed, the second magnetic attractor is attracted to the first magnetic attractor; or, the valve body is provided with at least one first magnetic attractor; the valve plate is provided with at least one second stepped hole, the second stepped hole is provided with a second magnetic attractor, the second stepped hole includes a vertically arranged second stepped surface, the second magnetic attractor can abut against the second stepped surface, and the second stepped surface faces away from the transformer tube; when each valve plate is movably disposed on the valve body and one exhaust port is closed, the second magnetic attractor is attracted to the first magnetic attractor.

[0090] See Figure 10 and Figure 11The exhaust valve includes a driver 4, and at least one valve plate 2 including two valve plates 2. One valve plate 2 is provided with a drive shaft 21 detachably mounted on the valve body 1, and a first gear 211 is provided on the drive shaft 21. The other valve plate 2 is provided with a driven shaft 22 detachably mounted on the valve body 1, and a second gear 221 meshing with the first gear 211 is provided on the driven shaft 22. The drive shaft 21 is directly or indirectly connected to the driver 4. When the driver 4 is working, the driver 4 will drive the drive shaft 21 to rotate. During the rotation of the drive shaft 21, the first gear 211 drives the second gear 221 to rotate, so that the two valve plates 2 rotate synchronously relative to the valve body 1.

[0091] In this invention, when the first gear 211 meshes with the second gear 221, the driving shaft 21 and the driven shaft 22 will move synchronously to ensure that the opening degrees of the two valve plates 2 are the same. When the opening degrees of the two valve plates 2 are the same, the pressure from the medium on the two valve plates 2 is basically the same. This structure avoids excessive pressure differences between different exhaust ports 111, which would prevent the exhaust port 111 with higher pressure from being opened.

[0092] See Figure 7 , Figure 9 and Figure 11 The exhaust valve also includes:

[0093] Real-time barometric pressure sensor 7 is used to detect real-time barometric pressure values;

[0094] Driver 4, driver 4 is located in valve body 1;

[0095] Transmission mechanism 5, at least one valve plate 2 is connected to the driver 4 through transmission mechanism 5;

[0096] The controller 6 and the real-time air pressure sensor 7 are electrically connected to the controller 6. After the real-time air pressure sensor 7 converts the detected real-time air pressure value into an electrical signal and transmits it to the controller 6, the controller 6 controls the driver 4 to work or stop working.

[0097] In this process, after the controller 6 controls the driver 4 to work, the driver 4 drives all the valve plates 2 to move relative to the valve body 1 through the transmission mechanism 5, so as to change the opening degree of each valve plate 2 relative to one of the exhaust ports 111.

[0098] Specifically, the preferred structures for exhaust valves include the following three:

[0099] In the first preferred configuration, the exhaust valve further includes:

[0100] Real-time barometric pressure sensor 7 is used to detect real-time barometric pressure values;

[0101] Ambient air pressure sensor 8 is used to detect ambient air pressure values;

[0102] Driver 4, driver 4 is located in valve body 1;

[0103] Transmission mechanism 5, at least one valve plate 2 is connected to the driver 4 through transmission mechanism 5;

[0104] The controller 6, the real-time air pressure sensor 7, and the ambient air pressure sensor 8 are electrically connected to the controller 6. After the real-time air pressure sensor 7 converts the detected real-time air pressure value into an electrical signal and transmits it to the controller 6, and the ambient air pressure sensor 8 converts the detected ambient air pressure value into an electrical signal and transmits it to the controller 6, the controller 6 controls the driver 4 to work or stop working based on the difference between the real-time air pressure value and the ambient air pressure value.

[0105] In this process, after the controller 6 controls the driver 4 to work, the driver 4 drives all the valve plates 2 to move relative to the valve body 1 through the transmission mechanism 5, so as to change the opening degree of each valve plate 2 relative to one of the exhaust ports 111.

[0106] In the second preferred configuration, the exhaust valve further includes:

[0107] Real-time barometric pressure sensor 7 is used to detect real-time barometric pressure values;

[0108] Ambient air pressure sensor 8 is used to detect ambient air pressure values;

[0109] Driver 4, driver 4 is located in valve body 1;

[0110] Transmission mechanism 5, at least one valve plate 2 is connected to the driver 4 through transmission mechanism 5;

[0111] The controller 6 has a preset standard deviation. The real-time air pressure sensor 7 and the ambient air pressure sensor 8 are electrically connected to the controller 6. After the real-time air pressure sensor 7 converts the detected real-time air pressure value into an electrical signal and transmits it to the controller 6, and the ambient air pressure sensor 8 converts the detected ambient air pressure value into an electrical signal and transmits it to the controller 6, the controller 6 obtains the real-time difference between the real-time air pressure value and the ambient air pressure value. The controller 6 controls the driver 4 to work or stop working based on the difference between the real-time difference and the standard deviation.

[0112] In this process, after the controller 6 controls the driver 4 to work, the driver 4 drives all the valve plates 2 to move relative to the valve body 1 through the transmission mechanism 5, so as to change the opening degree of each valve plate 2 relative to one of the exhaust ports 111.

[0113] In the third preferred configuration, the exhaust valve also includes:

[0114] Real-time barometric pressure sensor 7 is used to detect real-time barometric pressure values;

[0115] Driver 4, driver 4 is located in valve body 1;

[0116] Transmission mechanism 5, at least one valve plate 2 is connected to the driver 4 through transmission mechanism 5;

[0117] Controller 6 has a preset standard value. The real-time air pressure sensor 7 is electrically connected to the controller 6. After the real-time air pressure sensor 7 converts the detected real-time air pressure value into an electrical signal and transmits it to the controller 6, the controller 6 controls the driver 4 to work or stop working based on the difference between the real-time air pressure value and the standard value.

[0118] In this process, after the controller 6 controls the driver 4 to work, the driver 4 drives all the valve plates 2 to move relative to the valve body 1 through the transmission mechanism 5, so as to change the opening degree of each valve plate 2 relative to one of the exhaust ports 111.

[0119] In this invention, the controller 6 can compare the ambient air pressure value from the ambient air pressure sensor 8, a preset standard deviation value, and a preset standard value of the controller 6 with the real-time air pressure value from the real-time air pressure sensor 7 to output a control signal to the driver 4. This structure enables the controller to control the opening degree of the exhaust vents 111 on different floors. In this invention, the driver 4 is a motor. In other embodiments of this invention, the driver is a cylinder; or, the driver is a hydraulic cylinder.

[0120] The exhaust valve in this embodiment is used in an exhaust volume equalization distribution system. That is, the exhaust volume equalization distribution system includes a flue and at least two exhaust valves, each of which is located in the flue.

[0121] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. An exhaust valve, characterized in that... include: A valve body, comprising a body and a base plate, wherein the base plate is provided with at least one exhaust port, the body is provided with an exhaust channel, the base plate is disposed on the body and extends from the body toward the center of the exhaust channel, the exhaust channel is provided with a medium inlet and a medium outlet, and all exhaust ports are located between the medium inlet and the medium outlet; At least one valve plate, each valve plate being movably disposed in the valve body and used to open or close one of the exhaust ports; The base plate is provided with a guide for guiding the medium to flow toward the exhaust port; and / or, the valve body is provided with a detachable base, and when the base is provided on the valve body, the base and the valve body form a mounting hole for installing the valve plate.

2. The exhaust valve as described in claim 1, characterized in that, The exhaust valve also includes a pressure transformer pipe with a pressure transformer channel. The pressure transformer pipe is detachably installed in the exhaust channel. The pressure transformer pipe includes a pressure tapping section and a pressure transformer section. The cross-sectional area of ​​the pressure tapping section is different from that of the pressure transformer section. The pressure transformer section is located between the pressure tapping section and all exhaust ports.

3. The exhaust valve as described in claim 2, characterized in that, The transformer tube is fixedly connected to the valve body by a sealing ring, which is located between the transformer section and all exhaust ports. And / or, the cross-sectional area of ​​the pressure tapping section is different from the cross-sectional area of ​​the exhaust port, the cross-sectional area of ​​the pressure transformer section is different from the cross-sectional area of ​​the exhaust port, and the cross-sectional area of ​​the pressure transformer section is greater than the cross-sectional area of ​​the pressure tapping section, which is greater than the cross-sectional area of ​​the exhaust port.

4. The exhaust valve as described in claim 3, characterized in that, When the transformer tube is fixedly connected to the valve body by a sealing ring, the sealing ring is located between the outer wall of the transformer tube and the wall of the exhaust channel; and / or, the side wall of the transformer tube is provided with a pressure relief groove.

5. The exhaust valve as described in claim 3, characterized in that, The transformer tube also includes a tapered section, which is a tapered section. The pressure tapping section is located between the tapered section and the tapered section. The tapered section is provided with outwardly extending ribs. The sealing ring is located between the ribs and the valve body. Wherein, the cross-sectional area of ​​the tapering section is greater than the cross-sectional area of ​​the pressure tapping section, which is greater than the cross-sectional area of ​​the exhaust port.

6. The exhaust valve as described in claim 5, characterized in that, The tapered section is provided with outwardly extending protrusions, at least a portion of which are located outside the rib. When the sealing ring is located between the rib and the valve body, the protrusions abut against the side wall of the valve body. And / or, the base is detachably disposed on the substrate, and when the substrate is provided with a detachable base, the base and the substrate are fixedly connected by screws.

7. The exhaust valve as described in claim 3, characterized in that, At least one of the transformer tube and the valve body is provided with an installation channel. When the transformer tube is located in the exhaust channel and the transformer tube is fixedly connected to the valve body by a sealing ring, the sealing ring and the installation channel are located on both sides of the transformer tube. And / or, the valve body is provided with a connecting part, the connecting part including a vertically arranged guide section and a horizontally arranged locking section, the guide section being connected to the locking section.

8. The exhaust valve as described in claim 2, characterized in that, At least a portion of the transformer channel corresponds to the exhaust port, and the valve plate is provided with a sealing ring; The pressure tapping section is provided with a pressure tapping hole, and a real-time air pressure sensor is provided in the pressure tapping hole; and / or, an ambient air pressure sensor is provided between the transformer pipe and the exhaust channel.

9. The exhaust valve as described in claim 2, characterized in that, The exhaust valve also includes a driver, which is disposed on the valve body and directly or indirectly drives the valve plate to rotate relative to the valve body. Alternatively, the valve body is provided with at least one first magnetic attractor, and the valve plate is provided with at least one second magnetic attractor. When each valve plate is movably disposed on the valve body and one of the exhaust ports is closed, the second magnetic attractor is attracted to the first magnetic attractor. Alternatively, the valve body may have at least one first stepped hole, the first stepped hole may have a first magnetic attraction element, the first stepped hole may have a vertically arranged first stepped surface, the first magnetic attraction element may abut against the first stepped surface, and the first stepped surface may face away from the valve plate; the valve plate may have at least one second magnetic attraction element, and when each valve plate is movably disposed on the valve body and one of the exhaust ports is closed, the second magnetic attraction element is attracted to the first magnetic attraction element; Alternatively, the valve plate is provided with at least one second step hole, the second step hole is provided with a second magnetic attractor, the second step hole includes a vertically arranged second step surface, the second magnetic attractor can abut against the second step surface, and the second step surface faces away from the transformer tube; the valve body is provided with at least one first magnetic attractor, when each valve plate is movably disposed on the valve body and one of the exhaust ports is closed, the second magnetic attractor is attracted to the first magnetic attractor.

10. The exhaust valve as described in any one of claims 1 to 7, characterized in that, The exhaust valve also includes: A real-time barometric pressure sensor is used to detect real-time barometric pressure values. A driver, wherein the driver is disposed on the valve body; A transmission mechanism, wherein at least one valve plate is connected to the driver via the transmission mechanism; The controller is electrically connected to the real-time air pressure sensor. After the real-time air pressure sensor converts the detected real-time air pressure value into an electrical signal and transmits it to the controller, the controller controls the driver to work or stop working. After the controller controls the driver to work, the driver drives all the valve plates to move relative to the valve body through the transmission mechanism, so as to change the opening degree of each valve plate relative to one of the exhaust ports.

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