CN107606254B - Check valve and central oil smoke clarification plant - Google Patents
Check valve and central oil smoke clarification plant Download PDFInfo
- Publication number
- CN107606254B CN107606254B CN201711010863.7A CN201711010863A CN107606254B CN 107606254 B CN107606254 B CN 107606254B CN 201711010863 A CN201711010863 A CN 201711010863A CN 107606254 B CN107606254 B CN 107606254B
- Authority
- CN
- China
- Prior art keywords
- valve
- rotating shaft
- valve body
- valve plate
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 25
- 238000005352 clarification Methods 0.000 title description 2
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims 2
- 239000003517 fume Substances 0.000 abstract description 24
- 239000011229 interlayer Substances 0.000 abstract description 17
- 239000007789 gas Substances 0.000 description 20
- 230000000903 blocking effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 239000006233 lamp black Substances 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 235000021403 cultural food Nutrition 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Multiple-Way Valves (AREA)
Abstract
The invention provides a check valve and central oil smoke purifying equipment, and relates to the technical field of purifying equipment. The check valve comprises a valve body, wherein a first valve plate and a second valve plate are arranged in the valve body in parallel along the axial direction of the valve body, and the first valve plate and the second valve plate are matched with the section of the valve body; the valve body is provided with a first driving device and a second driving device, the first driving device is used for driving the first valve plate to rotate, and the second driving device is used for driving the second valve plate to rotate; the central oil fume purifying device comprises the oil fume exhauster and the check valve, wherein the check valve is communicated between an exhaust port of the oil fume exhauster and an air outlet of the public flue. The first valve block and the second valve block are arranged, and when one valve block in the first valve block and the second valve block is good in sealing performance, the howling phenomenon of the valve block can be avoided; when the tightness of the first valve plate and the second valve plate is poor, the interlayer between the first valve plate and the second valve plate can reduce the pressure difference between the kitchen air pressure and the public flue air pressure, so that the whistle intensity is reduced.
Description
Technical Field
The invention relates to the technical field of purifying equipment, in particular to a check valve and central oil fume purifying equipment.
Background
The traditional Chinese food culture manufacturing process comprises frying, roasting and the like, a large amount of oil smoke is generated in the food manufacturing process, the oil smoke not only has serious environmental pollution to a kitchen, but also has serious harm to a body and even cancer caused by long-term stay of kitchen operators in the oil smoke environment, so that the range hood is widely applied to the kitchen, and is an electric appliance such as the oil smoke generated when a household kitchen is used for sucking and cooking.
In the existing range hood, in order to reduce or even avoid the fume discharged from the range hood from recharging into the range hood, the range hood is usually provided with a check valve between an exhaust port of the range hood and an exhaust pipe, and the flow direction of the fume is limited by the check valve, so that the fume can only flow into the exhaust pipe from the kitchen and the range hood, but cannot flow back into the range hood from the exhaust pipe. When the traditional central oil fume purifying equipment is used, an exhaust port of a range hood is communicated with a public flue in general, negative pressure is generated by sucking in the public flue, a check valve is arranged between the exhaust port and the public flue, and the switch of the range hood is controlled by controlling the switch of the check valve; the existing check valve is generally provided with a valve block for blocking the valve body, when the range hood is not used, the valve block is in a blocking state, and pressure difference exists between gases at two sides of the valve block, and due to the fact that tightness between the valve block and the valve body is difficult to guarantee, the phenomenon of whistling of the valve block can be caused when the gases at two sides of the valve block circulate through a gap.
Disclosure of Invention
The invention aims to provide a check valve and central oil fume purifying equipment, which are used for solving the technical problems that in the prior art, when a range hood is not used, pressure difference exists between gases at two sides of a valve plate, the tightness between the valve plate and a valve body in the check valve is difficult to ensure, and the gases at two sides of the valve plate can cause the phenomenon of whistling of the valve plate when flowing from a gap.
The check valve comprises a valve body, wherein a first valve plate and a second valve plate are arranged in the valve body in parallel along the axial direction of the valve body, and the first valve plate and the second valve plate are matched with the section of the valve body; the valve body is provided with a first driving device and a second driving device, the first driving device is used for driving the first valve plate to rotate, and the second driving device is used for driving the second valve plate to rotate.
Further, the first driving device comprises a first rotating shaft and a first driving part, the first rotating shaft is pivoted in the valve body along the radial direction of the valve body, the first rotating shaft is detachably fixedly connected with the first valve plate, and the first driving part is used for driving the first rotating shaft to rotate; the second driving device comprises a second rotating shaft and a second driving part, the second rotating shaft is pivoted inside the valve body along the radial direction of the valve body, the second rotating shaft is detachably fixedly connected with the second valve plate, the second driving part is used for driving the second rotating shaft to rotate, and the second rotating shaft is arranged in parallel with the first rotating shaft.
Further, a semi-annular first boss is arranged in the valve body, the number of the first bosses is two, the two first bosses are respectively positioned at the upper part and the lower part of the section where the first rotating shaft is positioned, and the connecting line of the projection connecting position of the two first bosses on the section is collinear with the axis of the first rotating shaft.
Further, a semi-annular second boss is arranged in the valve body, two second bosses are respectively arranged at the upper part and the lower part of the section where the second rotating shaft is located, and the connecting line of the projection connecting part of the two second bosses on the section is collinear with the axis of the second rotating shaft.
Further, the surface of the first boss and the second boss, which is opposite to the first rotating shaft, is provided with a reinforcing rib.
Further, the first rotating shaft comprises a first driving shaft and a first rotating shaft, the first driving shaft and the first rotating shaft are respectively positioned on the side walls of the valve body, which are opposite along the radial direction, and the first valve plate is fixedly connected with the end part of the first driving shaft and the end part of the first rotating shaft; and/or the second rotating shaft comprises a second driving shaft and a second rotating shaft, the second driving shaft and the second rotating shaft are respectively positioned on the side walls of the valve body, which are opposite along the radial direction, and the second valve plate is fixedly connected with the end part of the second driving shaft and the end part of the first rotating shaft.
Further, a first pivoting groove is formed in the valve body, and the first rotating shaft is rotatably inserted into the first pivoting groove; and/or the valve body is provided with a second pivoting groove, and the second rotating shaft is rotationally inserted in the second pivoting groove.
Further, a first plug hole and a second plug hole are formed in the valve body, the first driving shaft penetrates through the first plug hole, and the second driving shaft penetrates through the second plug hole; the valve body is provided with a cover body in an external sealing manner, and the cover body covers the first driving device and the second driving device.
Further, a control switch is arranged on the valve body and is used for synchronously controlling the working states of the first driving device and the second driving device.
Another object of the present invention is to provide a central oil fume purification apparatus, comprising a range hood and the above check valve, wherein the check valve is communicated between an exhaust port of the range hood and an air outlet of a common flue, and the central oil fume purification apparatus has all the technical effects of the check valve.
The check valve and the central oil fume purifying device have the beneficial effects that:
the invention provides a check valve and central oil smoke purifying equipment, wherein the check valve comprises a valve body, a first valve plate, a second valve plate, a first driving device and a second driving device, wherein the valve body is used for communicating an exhaust port of an oil smoke machine with a public flue, the first valve plate and the second valve plate are used for blocking the communication state of a control valve body in the valve body, and the first driving device and the second driving device are used for driving the first valve plate and the second valve plate to rotate; the central oil fume purifying device comprises an oil fume exhauster for sucking oil fume in a kitchen, a public flue for conveying the oil fume and a check valve for communicating the oil fume exhauster with the public flue. The common flue is in a negative pressure state under the suction effect of the exhaust system, gas in the kitchen is approximately one atmosphere, when oil smoke is generated in the kitchen, an operator opens the first driving device and the second driving device to drive the first valve plate and the second valve plate to rotate, gaps are generated between the first valve plate, the second valve plate and the inner wall of the valve body, the kitchen on the side of the oil smoke machine is in a communicating state with the common flue, under the action of pressure difference, the oil smoke in the kitchen enters the oil smoke machine, and sequentially passes through the exhaust hole of the oil smoke machine, the gaps between the valve body and the first valve plate and the second valve plate and the exhaust pipe to enter the common flue, and then the oil smoke is conveyed to a designated position by the common flue to be discharged.
When the lampblack is not required to be pumped in a kitchen, the first driving device and the second driving device are closed, the first driving device and the second driving device respectively drive the first valve plate and the second valve plate to return to the initial positions, the valve body is plugged, in the plugged state, the two valve plates and the inner wall of the valve body jointly form an independent gas interlayer, and the air pressure in the interlayer is between the kitchen air pressure and the public flue air pressure at the two sides of the first valve plate and the second valve plate, namely, the air pressure in the interlayer is smaller than or equal to the kitchen air pressure (approximately one atmosphere pressure) and is larger than or equal to the public flue air pressure; when the tightness between one valve plate of the first valve plate and the second valve plate and the inner wall of the valve body is good, the two sides of the valve plate are in an isolated state, gas cannot circulate, and the howling phenomenon cannot occur; when the tightness of the first valve block and the second valve block is poor, under the action of pressure difference, gas in a kitchen enters the interlayer through a gap between the valve block and the valve body, the gas in the interlayer enters the public flue through a gap between the other valve block and the valve body (when in a balanced state, the gas pressure value in the interlayer is the average value of kitchen gas pressure and public flue gas pressure), the gas pressure difference at two sides of the valve block is reduced due to the existence of the interlayer, the flow speed is correspondingly reduced when the gas circulates through the gap between the valve block and the valve body, the acting force generated by the valve block is reduced, and the howling phenomenon of the valve block is correspondingly weakened.
That is, when one of the first valve block and the second valve block is good in sealing performance, the howling phenomenon of the valve block can be avoided; when the tightness of the first valve plate and the second valve plate is poor, the interlayer between the first valve plate and the second valve plate can reduce the pressure difference between the kitchen air pressure and the public flue air pressure, so that the whistle intensity is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic three-dimensional structure of a check valve according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a check valve according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of A-A of the first valve plate and the second valve plate in FIG. 2 in a blocking state;
fig. 4 is a schematic cross-sectional view of the first valve plate and the second valve plate in fig. 2 in an opened state.
Icon: 1-a valve body; 2-a first valve plate; 3-a second valve plate; 4-a first rotating shaft; 5-a second rotating shaft; 6-a first boss; 7-a second boss; 8-reinforcing ribs; 9-a cover body; 11-a first pivoting groove; 12-a second pivoting groove; 41-a first drive shaft; 42-a first rotation axis; 51-a second drive shaft; 52-a second rotation axis; 91-a drive motor; 92-wire outlet holes.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiment provides a check valve, as shown in fig. 3, which comprises a valve body 1, wherein a first valve plate 2 and a second valve plate 3 are arranged in the valve body 1 in parallel along the axial direction of the valve body, and the first valve plate 2 and the second valve plate 3 are matched with the section of the valve body 1; the valve body 1 is provided with a first driving device and a second driving device, the first driving device is used for driving the first valve plate 2 to rotate, and the second driving device is used for driving the second valve plate 3 to rotate.
The embodiment also provides central lampblack purification equipment, which comprises a lampblack absorber and the check valve, wherein the check valve is communicated between an exhaust port of the lampblack absorber and an air outlet of the public flue.
The check valve and the central oil fume purifying device provided by the embodiment comprise a valve body 1 for communicating an exhaust port of an oil fume exhauster with a public flue, a first valve plate 2 and a second valve plate 3 for blocking the communication state of the valve body 1 controlled by the interior of the valve body 1, and a first driving device and a second driving device for driving the first valve plate 2 and the second valve plate 3 to rotate; the central oil fume purifying device comprises an oil fume exhauster for sucking oil fume in a kitchen, a public flue for conveying the oil fume and a check valve for communicating the oil fume exhauster with the public flue. The public flue is in a negative pressure state under the suction effect of the exhaust system, gas in the kitchen is approximately one atmosphere, when oil smoke is generated in the kitchen, an operator opens the first driving device and the second driving device to drive the first valve plate 2 and the second valve plate 3 to rotate, gaps are generated between the first valve plate 2, the second valve plate 3 and the inner wall of the valve body 1, the kitchen on the side of the oil smoke machine is in a communicating state with the public flue, under the pressure difference effect, the oil smoke in the kitchen enters the oil smoke machine, and sequentially passes through the exhaust hole of the oil smoke machine, the gaps between the valve body 1 and the first valve plate 2 and the second valve plate 3 and the exhaust pipe to enter the public flue, and then the oil smoke is conveyed to a designated position by the public flue to be discharged.
When the lampblack is not required to be pumped in a kitchen, the first driving device and the second driving device are closed, the first driving device and the second driving device respectively drive the first valve plate 2 and the second valve plate 3 to return to the initial positions, the valve body 1 is plugged, in the plugged state, the two valve plates and the inner wall of the valve body 1 form an independent gas interlayer together, and the air pressure in the interlayer is between the kitchen air pressure and the public flue air pressure at two sides of the first valve plate 2 and the second valve plate 3, namely, the air pressure in the interlayer is smaller than or equal to the kitchen air pressure (approximately one atmosphere pressure) and is larger than or equal to the public flue air pressure; when one valve plate of the first valve plate 2 and the second valve plate 3 has good sealing performance with the inner wall of the valve body 1, the two sides of the valve plate are in an isolated state, gas cannot circulate, and the howling phenomenon cannot occur; when the tightness of the first valve block 2 and the second valve block 3 is poor, under the action of pressure difference, gas in a kitchen enters the interlayer through a gap between the valve block and the valve body 1, the gas in the interlayer enters the public flue through a gap between the other valve block and the valve body 1 (when in a balanced state, the pressure value in the interlayer is the average value of the kitchen pressure and the public flue pressure), the pressure difference of the two sides of the valve block is reduced due to the existence of the interlayer, the flow velocity is correspondingly reduced when the gas circulates through the gap between the valve block and the valve body 1, the acting force generated by the valve block is reduced, and the valve block whistle phenomenon is correspondingly weakened.
That is, when the sealing performance of one valve plate of the first valve plate 2 and the second valve plate 3 is good, the howling phenomenon of the valve plate can be avoided; when the tightness of the first valve plate 2 and the second valve plate 3 is poor, the interlayer between the two can reduce the pressure difference between the kitchen air pressure and the public flue air pressure, so that the whistle intensity is reduced.
Specifically, in this embodiment, as shown in fig. 3 and fig. 4, the first driving device may include a first shaft 4 and a first driving component, where the first shaft 4 is pivoted inside the valve body 1 along a radial direction of the valve body 1, the first shaft 4 is detachably fixedly connected with the first valve plate 2, and the first driving component is used for driving the first shaft 4 to rotate; the second driving device may also include a second rotating shaft 5 and a second driving component, where the second rotating shaft 5 is pivoted inside the valve body 1 along the radial direction of the valve body 1, the second rotating shaft 5 is detachably fixedly connected with the second valve plate 3, the second driving component is used to drive the second rotating shaft 5 to rotate, and the second rotating shaft 5 is parallel to the first rotating shaft 4. A control switch may be provided on the valve body 1 for synchronously controlling the operating states of the first and second driving means. Here, a specific form that the first driving device drives the first valve plate 2 and the second driving device drives the second valve plate 3 to rotate is that, taking the first driving device as an example, the first driving part is opened, the first driving part drives the first rotating shaft 4 to rotate, the first rotating shaft 4 drives the first valve plate 2 to rotate, the first driving part is closed, the first driving part drives the first rotating shaft 4 to drive the first valve plate 2 to return to the blocking state, and therefore the first driving part is controlled to drive the first rotating shaft 4 and the rotating angle of the first valve plate 2 in the valve body 1 through controlling the switching state and the rotating angle of the first driving part, and the blocking state of the first valve plate 2 is controlled.
The first rotating shaft 4 and the second rotating shaft 5 are arranged in parallel, namely, the rotating shafts of the first valve plate 2 and the second valve plate 3 are parallel, the control switch synchronously controls the first driving device and the second driving device, the first valve plate 2 and the second valve plate 3 synchronously rotate, and the rotating directions and the angles are the same, so that on one hand, the occurrence of interference conditions in the valve body 1 in the rotating process of the first valve plate 2 and the second valve plate 3 can be reduced; on the other hand, aiming at the condition of different kitchen oil smoke amounts, the first driving device and the second driving device are convenient to control the rotation angles of the first valve plate 2 and the second valve plate 3, and then the gap sectional areas (gas flow areas) between the first valve plate 2, the second valve plate 3 and the valve body 1 are controlled.
In this embodiment, as shown in fig. 1 to fig. 4, a semi-annular first boss 6 may be disposed in the valve body 1, where the two first bosses 6 are located at the upper portion and the lower portion of the section where the first rotating shaft 4 is located, respectively, and a connection line of the projection connection position of the two first bosses 6 on the section is collinear with the axis of the first rotating shaft 4; similarly, a semi-annular second boss 7 may be further disposed in the valve body 1, two second bosses 7 are disposed, the two second bosses 7 are located at an upper portion and a lower portion of a section where the second rotating shaft 5 is located, and a connection line of a projection connection position of the two second bosses 7 on the section is collinear with an axis of the second rotating shaft 5. The second boss 7 operates in a similar manner and effects to the first boss 6, and the first boss 6 is taken as an example for illustration: specifically, an upper boss is set at the upper part of the first boss 6, a lower boss is set at the lower part of the first boss 6 (the 'upper' and 'lower' are obtained by taking the view angles of fig. 3 and fig. 4 as references), as shown in fig. 4, the first boss 6 at the right side of the first rotating shaft 4 is an upper boss, the first boss 6 at the left side of the first rotating shaft 4 is a lower boss, when the first valve plate 2 is in a blocking state, as shown in fig. 3, the lower surface of the first valve plate 2 is tightly abutted with the lower boss under the drive of the first driving device, correspondingly, the upper surface is tightly abutted with the upper boss, the contact area of the first valve plate 2 and the first boss 6 is the lower surface of the upper boss and the upper surface of the lower boss, and the sealing property between the first valve plate 2 and the valve body 1 can be greatly improved by increasing the contact area; when the check valve needs to be opened, the first driving device is opened, the first driving device drives the first valve plate 2 to rotate as shown by a direction arrow in the attached drawing 4, the rotation range can be 0-90 degrees, and when the check valve needs to be closed, the first driving device is closed, and the first driving device rotates to drive the first valve plate 2 to return to an initial blocking state. The arrangement of the first boss 6 and the second boss 7 can greatly improve the tightness between the first valve plate 2, the second valve plate 3 and the valve body 1, and further reduce the occurrence of squeaking; in addition, the setting of sealing washer can also be saved, the sealing washer is reduced and ageing and influence the emergence of valve block sealing performance condition in the use easily to the life of extension check valve.
In order to increase the strength of the first boss 6 and the second boss 7, in this embodiment, as shown in fig. 2 to 4, reinforcing ribs 8 may be provided on the surfaces of the first boss 6 and the second boss 7 facing away from the first shaft 4. When in a blocking state, the first valve plate 2 and the second valve plate 3 are driven by the first driving device and the second driving device to be pressed against the first boss 6 and the second boss 7 forcefully, and the reinforcing rib 8 can reduce the deformation of the first boss 6 and the second boss 7 due to stress, so that the tightness between the first valve plate 2 and the second valve plate 3 and the valve body 1 is improved, and the howling phenomenon is reduced.
Specifically, in this embodiment, as shown in fig. 3, the first rotating shaft 4 includes a first driving shaft 41 and a first rotating shaft 42, where the first driving shaft 41 and the first rotating shaft 42 are respectively located on radially opposite sidewalls of the valve body 1, and the first valve plate 2 is fixedly connected to an end portion of the first driving shaft 41 and an end portion of the first rotating shaft 42; and/or the second rotating shaft 5 may include a second driving shaft 51 and a second rotating shaft 52, the second driving shaft 51 and the second rotating shaft 52 being respectively located on radially opposite sidewalls of the valve body 1, and the second valve sheet 3 being fixedly connected to an end of the second driving shaft 51 and an end of the first rotating shaft 42. Taking the first rotating shaft 4 as an example, the first driving component is started, the first driving component rotates and drives the first driving shaft 41 to rotate, the first driving shaft 41 drives the first valve plate 2 and the second rotating shaft 52 to rotate, wherein the first rotating shaft 42 is pivoted on the valve body 1, and the first rotating shaft 42 rotates around the pivoted position to limit the rotating axis of the first valve plate 2.
In this embodiment, as shown in fig. 3, a first pivot slot 11 may be provided on the valve body 1, and a first rotation shaft 42 is rotatably inserted into the first pivot slot 11; and/or, the valve body 1 is provided with a second pivoting groove 12, and the second rotating shaft 52 is rotatably inserted in the second pivoting groove 12. The first rotating shaft 42 and the second rotating shaft 52 are respectively pivoted on the inner wall of the valve body 1 through the first pivoting groove 11 and the second pivoting groove 12, and on the basis of realizing the rotation of the rotating shafts, through holes arranged on the valve body 1 for installing the rotating shafts are reduced, so that the leakage of oil smoke through the through holes when the oil smoke passes through the check valve is reduced.
Specifically, in this embodiment, as shown in fig. 3, a first plug hole and a second plug hole may be provided on the valve body 1, the first driving shaft 41 passes through the first plug hole, and the second driving shaft 51 passes through the second plug hole; the valve body 1 is provided with a cover body 9 in an external sealing manner, and the cover body 9 covers the first driving device and the second driving device. Here, the first driving shaft 41 and the second driving shaft 51 are provided in a specific form, and the cover body 9 covers the first driving device and the second driving device therein, so that the protection effect can be achieved, and damage to the first driving device and the second driving device caused by external factors is reduced. Specifically, the cover 9 may include a side wall and an end cover, and the end cover and the side wall are connected together by a screw, and a wire outlet 92 may be provided on the cover 9 for electrically connecting the driving motor 91 with an external power source.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present invention.
Claims (10)
1. The check valve is characterized by comprising a valve body (1), wherein a first valve plate (2) and a second valve plate (3) are arranged in the valve body (1) in parallel along the axial direction of the valve body, and the first valve plate (2) and the second valve plate (3) are matched with the section of the valve body (1); the valve body (1) is provided with a first driving device and a second driving device, the first driving device is used for driving the first valve plate (2) to rotate, and the second driving device is used for driving the second valve plate (3) to rotate;
when the first driving device and the second driving device are in a closed state, the first driving device and the second driving device respectively drive the first valve plate (2) and the second valve plate (3) to return to the initial positions, and the valve body (1) is plugged; under the shutoff state, first valve block (2) second valve block (3) with valve body (1) inner wall jointly forms an independent gas barrier, the atmospheric pressure in the gas barrier is in first valve block (2) with kitchen gas pressure and the public flue atmospheric pressure of second valve block (3) both sides are between.
2. The check valve according to claim 1, wherein the first driving device comprises a first rotating shaft (4) and a first driving component, the first rotating shaft (4) is pivoted inside the valve body (1) along the radial direction of the valve body (1), the first rotating shaft (4) is detachably fixedly connected with the first valve plate (2), and the first driving component is used for driving the first rotating shaft (4) to rotate;
the second driving device comprises a second rotating shaft (5) and a second driving part, the second rotating shaft (5) is pivoted inside the valve body (1) along the radial direction of the valve body (1), the second rotating shaft (5) is detachably fixedly connected with the second valve plate (3), the second driving part is used for driving the second rotating shaft (5) to rotate, and the second rotating shaft (5) and the first rotating shaft (4) are arranged in parallel.
3. The check valve according to claim 2, wherein the valve body (1) is internally provided with a semi-annular first boss (6), two first bosses (6) are respectively positioned at the upper part and the lower part of the section where the first rotating shaft (4) is positioned, and the connecting line of the projection connecting position of the two first bosses (6) on the section is collinear with the axis of the first rotating shaft (4).
4. A check valve according to claim 3, wherein a semi-annular second boss (7) is arranged in the valve body (1), two second bosses (7) are arranged, the two second bosses (7) are respectively positioned at the upper part and the lower part of the section where the second rotating shaft (5) is positioned, and the connecting line of the projection connecting position of the two second bosses (7) on the section is collinear with the axis of the second rotating shaft (5).
5. The non-return valve in accordance with claim 4, characterized in that the surface of the first boss (6) and the second boss (7) facing away from the first rotation shaft (4) is provided with a reinforcing rib (8).
6. A non-return valve according to any one of claims 2-5, characterized in that the first rotary shaft (4) comprises a first drive shaft (41) and a first rotary shaft (42), the first drive shaft (41) and the first rotary shaft (42) being located on diametrically opposite side walls of the valve body (1), respectively, the first valve plate (2) being fixedly connected to an end of the first drive shaft (41) and an end of the first rotary shaft (42);
and/or, the second rotating shaft (5) comprises a second driving shaft (51) and a second rotating shaft (52), the second driving shaft (51) and the second rotating shaft (52) are respectively positioned on the side walls of the valve body (1) which are opposite along the radial direction, and the second valve plate (3) is fixedly connected with the end part of the second driving shaft (51) and the end part of the first rotating shaft (42).
7. The check valve according to claim 6, characterized in that the valve body (1) is provided with a first pivoting groove (11), and the first rotating shaft (42) is rotatably inserted into the first pivoting groove (11); and/or, a second pivoting groove (12) is formed in the valve body (1), and the second rotating shaft (52) is rotationally inserted into the second pivoting groove (12).
8. The check valve according to claim 6, characterized in that the valve body (1) is provided with a first plug hole and a second plug hole, the first drive shaft (41) passing through the first plug hole, the second drive shaft (51) passing through the second plug hole; the valve body (1) is provided with a cover body (9) in an external sealing manner, and the cover body (9) covers the first driving device and the second driving device.
9. A non-return valve according to any one of claims 1-5, characterized in that the valve body (1) is provided with a control switch for synchronously controlling the operating states of the first and second drive means.
10. A central smoke purification apparatus comprising a range hood and a check valve according to any one of claims 1 to 9, said check valve being in communication between an exhaust port of said range hood and an exhaust port of a common flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010863.7A CN107606254B (en) | 2017-10-25 | 2017-10-25 | Check valve and central oil smoke clarification plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010863.7A CN107606254B (en) | 2017-10-25 | 2017-10-25 | Check valve and central oil smoke clarification plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107606254A CN107606254A (en) | 2018-01-19 |
| CN107606254B true CN107606254B (en) | 2024-04-12 |
Family
ID=61080375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711010863.7A Active CN107606254B (en) | 2017-10-25 | 2017-10-25 | Check valve and central oil smoke clarification plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107606254B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288521B (en) * | 2020-03-16 | 2021-10-29 | 宁波方太厨具有限公司 | Air outlet cover and range hood with same |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1308801A (en) * | 1970-02-06 | 1973-03-07 | Thermo Technical Dev Ltd | Gas-tight isolators and valves |
| DE4443041A1 (en) * | 1994-12-04 | 1996-06-05 | Gerd Hoermansdoerfer | Throttle valve control for varying cross=section of IC engine inlet port |
| CN2688995Y (en) * | 2004-04-22 | 2005-03-30 | 杨清强 | Two-way non-loss butterfly valves |
| KR20070027313A (en) * | 2005-09-06 | 2007-03-09 | 김종구 | Water suppling valve cartridge |
| CN201487248U (en) * | 2009-08-14 | 2010-05-26 | 江苏省鑫通阀门制造有限公司 | Eccentric liner type wear-resistant dust-laden gas butterfly valve |
| CN202065483U (en) * | 2011-04-26 | 2011-12-07 | 郑州华泰特阀有限公司 | High-temperature flue butterfly valve |
| KR20120001723U (en) * | 2010-07-28 | 2012-03-09 | 인하대학교 산학협력단 | Butterfly valve using two disc |
| CN203162188U (en) * | 2013-02-04 | 2013-08-28 | 四川华林自控科技有限公司 | Check ring butterfly valve |
| CN203363212U (en) * | 2013-06-18 | 2013-12-25 | 安徽盛运环保工程有限公司 | Flue gas pipeline seal valve |
| CN203532784U (en) * | 2013-11-20 | 2014-04-09 | 温州澳美特轻工机械有限公司 | Intelligent double-sealed leak-proof butterfly valve |
| CN204387358U (en) * | 2014-12-23 | 2015-06-10 | 天津富赛克流体控制设备有限公司 | Dry shaft type double eccentric butterfly valve |
| CN204533801U (en) * | 2015-01-09 | 2015-08-05 | 刘聪 | A kind of hand of wiping automatically water tap |
| CN105351537A (en) * | 2015-11-19 | 2016-02-24 | 成都九十度工业产品设计有限公司 | Butterfly valve with two valve clacks |
| CN205278399U (en) * | 2015-11-19 | 2016-06-01 | 西安环琪管道制造有限公司 | Convenient, corrosion resistant plastics butterfly valve of being under construction |
| CN205781261U (en) * | 2016-05-20 | 2016-12-07 | 宁波国创机车装备有限公司 | A kind of multi-joint plane mounting cock |
| CN205896292U (en) * | 2016-07-22 | 2017-01-18 | 宁波方太厨具有限公司 | Single valve piece check valve |
| CN106382397A (en) * | 2016-08-28 | 2017-02-08 | 杭州老板电器股份有限公司 | Electric control air-return-resistant check valve for exhaust hood |
| CN106641287A (en) * | 2016-12-08 | 2017-05-10 | 新昌县宏胜机械有限公司 | Butterfly valve |
| KR101770338B1 (en) * | 2016-12-14 | 2017-08-22 | 함광식 | Butterfly valve with the function of check |
| CN207406850U (en) * | 2017-10-25 | 2018-05-25 | 杭州老板电器股份有限公司 | Check-valves and central cooking fume control equipment |
-
2017
- 2017-10-25 CN CN201711010863.7A patent/CN107606254B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1308801A (en) * | 1970-02-06 | 1973-03-07 | Thermo Technical Dev Ltd | Gas-tight isolators and valves |
| DE4443041A1 (en) * | 1994-12-04 | 1996-06-05 | Gerd Hoermansdoerfer | Throttle valve control for varying cross=section of IC engine inlet port |
| CN2688995Y (en) * | 2004-04-22 | 2005-03-30 | 杨清强 | Two-way non-loss butterfly valves |
| KR20070027313A (en) * | 2005-09-06 | 2007-03-09 | 김종구 | Water suppling valve cartridge |
| CN201487248U (en) * | 2009-08-14 | 2010-05-26 | 江苏省鑫通阀门制造有限公司 | Eccentric liner type wear-resistant dust-laden gas butterfly valve |
| KR20120001723U (en) * | 2010-07-28 | 2012-03-09 | 인하대학교 산학협력단 | Butterfly valve using two disc |
| CN202065483U (en) * | 2011-04-26 | 2011-12-07 | 郑州华泰特阀有限公司 | High-temperature flue butterfly valve |
| CN203162188U (en) * | 2013-02-04 | 2013-08-28 | 四川华林自控科技有限公司 | Check ring butterfly valve |
| CN203363212U (en) * | 2013-06-18 | 2013-12-25 | 安徽盛运环保工程有限公司 | Flue gas pipeline seal valve |
| CN203532784U (en) * | 2013-11-20 | 2014-04-09 | 温州澳美特轻工机械有限公司 | Intelligent double-sealed leak-proof butterfly valve |
| CN204387358U (en) * | 2014-12-23 | 2015-06-10 | 天津富赛克流体控制设备有限公司 | Dry shaft type double eccentric butterfly valve |
| CN204533801U (en) * | 2015-01-09 | 2015-08-05 | 刘聪 | A kind of hand of wiping automatically water tap |
| CN105351537A (en) * | 2015-11-19 | 2016-02-24 | 成都九十度工业产品设计有限公司 | Butterfly valve with two valve clacks |
| CN205278399U (en) * | 2015-11-19 | 2016-06-01 | 西安环琪管道制造有限公司 | Convenient, corrosion resistant plastics butterfly valve of being under construction |
| CN205781261U (en) * | 2016-05-20 | 2016-12-07 | 宁波国创机车装备有限公司 | A kind of multi-joint plane mounting cock |
| CN205896292U (en) * | 2016-07-22 | 2017-01-18 | 宁波方太厨具有限公司 | Single valve piece check valve |
| CN106382397A (en) * | 2016-08-28 | 2017-02-08 | 杭州老板电器股份有限公司 | Electric control air-return-resistant check valve for exhaust hood |
| CN106641287A (en) * | 2016-12-08 | 2017-05-10 | 新昌县宏胜机械有限公司 | Butterfly valve |
| KR101770338B1 (en) * | 2016-12-14 | 2017-08-22 | 함광식 | Butterfly valve with the function of check |
| CN207406850U (en) * | 2017-10-25 | 2018-05-25 | 杭州老板电器股份有限公司 | Check-valves and central cooking fume control equipment |
Non-Patent Citations (3)
| Title |
|---|
| 催化裂化装置烟道管件故障失效分析;马显峰;;广州化工;20130523(10);全文 * |
| 厨房集中排烟道用止逆阀性能研究及其影响;辛月琪, 徐文华;建筑热能通风空调;20050115(01);全文 * |
| 实际工程中建筑设备监控系统设计及专业间配合的若干技术细节;李博邃;;电气应用;20131120(22);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107606254A (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107606254B (en) | Check valve and central oil smoke clarification plant | |
| CN107559915B (en) | Range hood with sail and central oil smoke purifying equipment | |
| CN108087595B (en) | Check valve and central oil smoke clarification plant | |
| WO2016037414A1 (en) | Range hood and volute thereof | |
| US10006459B2 (en) | Claw pump | |
| CN111878864A (en) | Cooking apparatus | |
| WO2020155698A1 (en) | Range hood, range hood and stove integrated machine and kitchen device | |
| CN207406850U (en) | Check-valves and central cooking fume control equipment | |
| CN113260791B (en) | Claw pump | |
| CN110260381B (en) | Side-draft range hood | |
| CN115622325B (en) | Energy storage flywheel capable of automatically vacuumizing and energy storage equipment with energy storage flywheel | |
| CN215372894U (en) | Electric air valve device | |
| CN113576274B (en) | Door body and cooking device | |
| EP3410019A1 (en) | Cooker hood and housing assembly thereof | |
| EP2665939B1 (en) | Centrifugal electric pump for suction of aeriform fluids with liquids anti-infiltration device | |
| CN109737225B (en) | Check valve and range hood | |
| CN110159558B (en) | Air suction device and range hood | |
| CN221122796U (en) | Oven and drying equipment | |
| KR20220114892A (en) | Integrated device for for water pump and valve | |
| CN108105814B (en) | Side-suction type range hood | |
| CN111288521A (en) | Air outlet cover and range hood with same | |
| CN211739257U (en) | Air door switching device and fresh air heater | |
| CN214170859U (en) | Protection device for chemical process pump | |
| CN221003185U (en) | Fan assembly and washing equipment | |
| CN212585027U (en) | Fume exhaust fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |