CN216131393U - Valve and fluid metering device - Google Patents
Valve and fluid metering device Download PDFInfo
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- CN216131393U CN216131393U CN202122010508.8U CN202122010508U CN216131393U CN 216131393 U CN216131393 U CN 216131393U CN 202122010508 U CN202122010508 U CN 202122010508U CN 216131393 U CN216131393 U CN 216131393U
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Abstract
The embodiment of the application discloses a valve and a fluid metering instrument, relates to the technical field of metering, and aims to reduce pressure loss between a fluid inlet and a fluid outlet of the valve. The valve, comprising: the valve frame is provided with a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are communicated in the valve frame; a valve seal is arranged in the valve frame and is rotatably connected with the first end of the valve rod. The application is applicable to metering of fluids.
Description
Technical Field
The application relates to the technical field of fluid metering, in particular to a valve and a fluid metering instrument.
Background
The valve is installed in the fluid metering instrument, and the valve includes the valve seal, and in the prior art, be right angle fixed connection between valve seal and the valve rod, like this, fluid flows from fluid entry to fluid outlet, and the resistance to ventilation is great, leads to the valve pressure to decrease great.
SUMMERY OF THE UTILITY MODEL
In view of this, embodiments of the present application provide a valve and a fluid metering device, which can reduce the pressure loss of the valve.
In a first aspect, an embodiment of the present application provides a valve, including: the valve frame is provided with a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are communicated in the valve frame; a valve seal is arranged in the valve frame and is abutted against the fluid outlet or the fluid inlet when the valve is in a valve closing state; when the valve is in a valve opening state, the valve seal and the axis of the fluid inlet form a first preset angle; during the process of switching the valve from the valve closing state to the valve opening state, the valve seal is rotatably connected around the first end of the valve rod.
According to a specific implementation manner of the embodiment of the application, a spherical cavity is arranged on the valve seal; a ball body is arranged at the first end of the valve rod; the ball body is arranged in the spherical cavity, and the valve seal is connected around the ball body of the valve rod in a rotating mode through the spherical cavity.
According to a specific implementation manner of the embodiment of the application, a first limiting part is arranged on the inner wall of the valve frame at a position close to the fluid outlet, and at least part of the edge of the valve seal is located between the first limiting part and the fluid outlet.
According to a specific implementation manner of the embodiment of the application, the first limit portion is disposed on an inner wall of the valve frame corresponding to the fluid inlet.
According to a specific implementation manner of the embodiment of the application, the side surface of the first limiting portion, which faces one side of the fluid outlet, and the axis of the fluid inlet form a second preset angle, and the second preset angle is larger than 0 °.
According to a specific implementation manner of the embodiment of the application, the number of the first limiting parts is at least two.
According to a specific implementation manner of the embodiment of the application, a second limiting part is arranged on the valve rod or in the valve frame; the second limiting part and the first limiting part are respectively positioned on two sides of the valve rod, and the second limiting part is opposite to the first limiting part and is further away from the fluid outlet.
According to a specific implementation manner of the embodiment of the application, when the valve is in the open valve state, the valve seal abuts against the second limiting portion, the valve seal and the axis of the fluid inlet form the first preset angle, and the first preset angle is greater than or equal to 15 degrees and smaller than or equal to 35 degrees.
According to a concrete implementation of this application embodiment, first spacing orientation the fluid entry the side of one side, with the axis of fluid entry is the third and predetermines the angle, the third predetermines the angle and does not equal to 90 degrees
In a second aspect, embodiments of the present application provide a fluid metering device, including: the valve comprises a shell and the valve in any implementation mode, wherein a fluid inlet is formed in the shell, and the fluid inlet in the shell is communicated with the fluid inlet in the valve frame.
The embodiment provides a valve and a fluid metering instrument, wherein a valve seal is arranged in a valve frame, and the valve seal is rotatably connected with a first end of a valve rod, so that when the valve is in an open valve state, the valve seal is in an inclined state relative to the valve rod, and fluid is guided from a fluid inlet to a fluid outlet, so that the ventilation resistance is reduced, and the pressure loss between the fluid inlet and the fluid outlet of the valve is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a valve according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural view of a valve seal according to an embodiment of the present application;
FIG. 3 is a schematic illustration of a valve stem according to an embodiment of the present application;
FIG. 4 is a schematic view of a valve cage according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a valve in a closed state according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to make those skilled in the art better understand the technical concepts, embodiments and advantages of the examples of the present application, the following detailed description is given by way of specific examples.
An embodiment of the present application provides a valve, includes: the valve frame is equipped with fluid inlet and fluid outlet on the valve frame, fluid inlet with the fluid outlet is in communicate in the valve frame be equipped with the valve seal in the valve frame, valve seal and the first end rotatable coupling of valve rod can reduce the pressure loss of valve.
Fig. 1 is a schematic structural diagram of a valve provided in an embodiment of the present application, fig. 2 is a schematic structural diagram of a valve seal in an embodiment of the present application, and fig. 3 is a schematic structural diagram of a valve stem in an embodiment of the present application, and as shown in fig. 1, a method of a valve of the present embodiment may include: the valve frame 1 is provided with a fluid inlet 10 and a fluid outlet 12, and the fluid inlet 10 and the fluid outlet 12 are communicated in the valve frame 1; a valve seal 2 is arranged in the valve frame 1;
when the valve is in a valve closing state, the valve seal 2 is abutted against the fluid outlet 12 or the fluid inlet 10; when the valve is in an open valve state, the valve seal 2 and the axis of the fluid inlet 10 form a first preset angle; during the process of switching the valve from the valve closing state to the valve opening state, the valve seal 2 is rotatably connected around the first end of the valve rod 3.
The valve frame 1 is a main part of a ball valve, and has different mechanical manufacturing methods according to pressure grades, such as casting, forging and the like. The valve frame 1 is made of different materials according to different process media, and the common materials include cast iron, cast steel, stainless steel, carbon steel, plastic, copper and the like.
The valve seal 2 is made of rubber materials, when the valve is in a valve closing state, the valve seal 2 is matched with the edge of the fluid outlet 12 on the valve frame 1 to seal the fluid outlet 12, and fluid cannot flow out of the outlet; alternatively, the valve seal 2 engages with the edge of the fluid inlet 10 on the valve frame 1 to seal the fluid inlet 10, and fluid cannot flow out of the outlet.
When the valve is in the open valve state, the valve seal 2 is at a first preset angle with respect to the axis of the fluid inlet 10, i.e. the valve seal 2 is inclined with respect to the axis of the fluid inlet 10, it being understood that the first preset angle is not 0 °.
In the process of switching the valve from the valve closing state to the valve opening state, the valve seal 2 is rotatably connected around the first end of the valve rod 3, namely, in the process of switching the valve between the valve opening state and the valve closing state by driving the valve seal 2 to move by the valve rod 3, the valve seal 2 and the first end of the valve rod 3 can rotate relatively. In some examples, the power mechanism is connected to one end of the valve stem 3 through a power transmission mechanism. To open the valve, the valve stem 3 moves the valve seal 2 away from the fluid inlet 10. To close the valve, the valve stem 3 pushes the valve seal 2 towards the fluid inlet 10.
In some examples, the rotatable connection of the valve seal 2 to the first end of the valve stem 3 may be achieved by means of a hinged connection. As an implementation manner of the relative rotation between the valve seal 2 and the first end of the valve rod 3, in some examples, the valve seal 2 is provided with a spherical cavity 20, the first end of the valve rod 3 is provided with a sphere 30, the sphere 30 is arranged in the spherical cavity 20, and the valve seal 2 is rotatably connected around the sphere 30 of the valve rod 3 through the spherical cavity 20.
The valve seal 2 may include first and second parts that each include a partially spherical cavity, and the first and second parts of the valve seal 2 fit together to form the spherical cavity 20.
The ball 30 is disposed in the spherical cavity 20, specifically by mounting the ball 30 in a part of the spherical cavity of the first component of the valve seal 2, and then mounting the second component with the first component.
In the embodiment, the valve seal is arranged in the valve frame, and when the valve is in a valve closing state, the valve seal is abutted against the fluid outlet or the fluid inlet; when the valve is in a valve opening state, the valve seal and the axis of the fluid inlet form a first preset angle; in the process of switching the valve from the valve closing state to the valve opening state, the valve seal is rotatably connected around the first end of the valve rod, so that when the valve is in the valve opening state, the valve seal is in an inclined state relative to the valve rod, and fluid is guided to the fluid outlet from the fluid inlet, so that the ventilation resistance is reduced, the pressure loss between the fluid inlet and the fluid outlet of the valve is reduced, the quality of the valve is improved, and the cost of the valve can be saved.
Referring to fig. 4, in order to limit the inclination of the valve seal 2 and improve the reliability of the valve operation, another embodiment of the present invention is substantially the same as the above embodiment, except that the valve of the present embodiment is provided with a first limiting portion 14 on the inner wall of the valve frame 1 at a position close to the fluid outlet 12, and at least a part of the edge of the valve seal 2 is located between the first limiting portion 14 and the fluid outlet 12.
The first stopper portion 14 can restrict the moving distance of at least a part of the edge of the valve seal 2 with respect to the fluid outlet 12. Part of the edge of the valve seal 2 is located between the first position-limiting portion 14 and the fluid outlet 12, i.e. the maximum distance of at least part of the edge of the valve seal 2 relative to the fluid outlet 12 is the distance between the first position-limiting portion 14 and the fluid outlet 12.
When the valve seal 2 is driven by the valve rod 3 to move in a direction away from the fluid outlet 12, when a part of the edge of the valve seal 2 abuts against the first limiting portion 14, the part of the valve seal 2 except the abutted part of the edge rotates around the abutted edge under the driving of the valve rod 3 until the valve rod 3 moves to a preset position and does not move any more, and at the moment, the valve seal 2 and the valve rod 3 are in an inclined state.
To reduce the resistance of the fluid flowing into the valve from the fluid inlet 10, in some examples, the first position-limiting portion 14 is disposed on the inner wall of the valve frame 1 corresponding to the fluid inlet 10.
The first position-limiting part 14 is disposed on the valve frame 1 and on the inner wall opposite to the fluid inlet 10, so that the angle between the valve seal 2 and the fluid inlet 10 can be increased, which is beneficial for gas to flow into the valve from the fluid inlet 10 and then be guided to the fluid outlet 12 by the valve seal 2.
In order to facilitate the rotation of the valve seal 2 and improve the reliability of the valve operation, as an implementation manner, a side surface of the first limiting portion 14 facing to one side of the fluid outlet 12 and an axis of the fluid inlet 10 form a second preset angle, and the second preset angle is greater than 0 °.
Since the side surface of the first limiting portion facing the fluid outlet 12 is at a second predetermined angle with respect to the axis of the fluid inlet 10, the second predetermined angle is formed between the valve seal 2 and the fluid inlet 10.
In addition to the above embodiments, in order to further facilitate the rotation of the valve seal and reduce the pressure loss between the fluid inlet 10 and the fluid outlet 12, in some examples, the second predetermined angle is greater than or equal to 0 ° and less than or equal to 5 °, that is, the side of the first position-limiting portion facing the fluid outlet 12 is at a predetermined angle with the axis of the fluid inlet 10, greater than or equal to 0 ° and less than or equal to 5 °,
in order to facilitate the rotation of the valve seal 2 and improve the reliability of the valve operation, as another implementation manner, a side surface of the first limiting portion 14 facing to one side of the fluid inlet 10 forms a third preset angle with the axis of the fluid inlet 10, and the third preset angle is not equal to 90 °.
The side surface of the first limiting portion 14 facing the side of the fluid inlet 10 forms a third preset angle with the axis of the fluid inlet 10, and the third preset angle is not equal to 90 °, that is, the side surface of the first limiting portion 14 facing the side of the fluid inlet 10 is not perpendicular to the axis of the fluid inlet 10, so that a guiding effect is generated on the valve seal 2 during the process of switching from the valve closing state to the valve opening state, so that the valve seal 2 is inclined relative to the fluid inlet 10, which is beneficial for gas to flow into the valve from the fluid inlet 10 and then guided to the fluid outlet 12 by the valve seal 2.
To further improve the stability of the valve seal 2 in the inclined state, in some examples, the number of the first position-limiting portions 14 is at least two.
Since the number of the first position-limiting portions 14 is at least two, the at least two first position-limiting members can provide a position-limiting function for the inclination of the valve seal 2, so that the stability of the valve in the open state is improved, and further, the reliability of the valve is improved.
In order to further improve the stability of the valve seal 2 in the inclined state, in some examples, the valve rod 3 is provided with a second limit part 32; the second position-limiting portion 32 and the first position-limiting portion 14 are respectively located at two sides of the valve rod 3, and the second position-limiting portion 32 is further away from the fluid outlet 12 relative to the first position-limiting portion 14.
In this embodiment, the second position-limiting portion 32 is farther away from the fluid outlet 12 than the first position-limiting portion 14, that is, the distance between the first position-limiting portion 14 and the fluid outlet 12 is smaller than the distance between the second position-limiting portion 32 and the fluid outlet 12, and it is understood that the distance may be the distance from the fluid outlet 12 in the axial direction.
The valve rod 3 drives the valve seal 2 to move towards the direction far away from the fluid outlet 12, because the second limit part 32 is far away from the fluid outlet 12 relative to the first limit part 14, part of the edge of the valve seal 2 is firstly abutted against the first limit part 14, other part of the valve seal 2 continues to move along with the valve rod 3, and the other part of the edge of the valve seal 2 is abutted against the second limit part 32, and because the second limit part 32 and the first limit part 14 are respectively positioned at two sides of the valve rod 3, correspondingly, the edge of the valve seal 2 abutting against the first limit part 14 and the edge of the valve seal 2 abutting against the second limit part 32 are at opposite positions on the valve seal 2, because the opposite edges of the valve seal 2 are respectively abutted against the first limit part 14 and the second limit part 32, even if the valve rod 3 continues to move, the valve seal 2 is limited by the first limit part 14 and the second limit part 32 positioned at two sides of the valve rod 3, accordingly, the relative position of the valve seal 2 in the valve frame 1 is fixed, and therefore, the stability of the valve seal 2 in the inclined state can be improved, and the reliability of the valve can be further improved.
As an alternative, in other examples, a second limit portion is provided in the valve frame 1; the second limiting part and the first limiting part 14 are respectively located on two sides of the valve rod 3, and the second limiting part is far away from the fluid outlet 12 relative to the first limiting part 14.
In order to enable the valve seal 2 to incline by a fixed angle when the first limiting part 14 and at least part of the edge of the valve seal 2 are abutted against each other, when the valve is in a valve opening state, the valve seal 2 is abutted against the second limiting part, and the valve seal 2 and the axis of the fluid inlet 10 form a first preset angle which is more than or equal to 15 degrees and less than or equal to 35 degrees.
To improve the smoothness of the operation of the valve seal 2 by the valve stem 3, in some examples, the valve stem 3 includes a rack 34, and a first end of the rack is rotatably connected to the valve seal 2.
In some examples, the valve includes a valve frame 1, a valve seal 2, a valve stem 3, a spring 4, and a gear assembly 5.
When the valve needs to be opened, the motor is decelerated through the gear transmission assembly 5, the gear transmission assembly 5 and the tooth part of the rack 20 on the valve rod 3 are matched and pulled backwards, and the valve seal 2 is driven to be opened through the guiding of the guiding shaft on the rack 34. The valve seal 2 is matched with a ball body on the valve rod 3 through a spherical cavity, the edge of the valve seal 2 is limited through a first limiting part 14 (a blocking rib) of the valve frame 1, the inclination direction of the valve seal 2 is limited, preferably, the inclination direction is generally 15-35 degrees, and therefore after the valve seal 2 is inclined, gas in an air inlet is guided to an air outlet, and valve pressure loss is reduced.
Referring to fig. 5, when the valve needs to be closed, the motor is reversely transmitted to the gear transmission assembly 5, the rack 34 is disconnected from the power of the motor, the valve seal 2 is pushed towards the opening of the valve frame 1 by the force of the guide shaft and the spring 4 of the spring 4, the valve seal 2 is matched with the surface of the valve seal 2 of the valve frame 1, fluid cannot flow out from the fluid outlet 12, and the whole valve is sealed.
According to the technical scheme of the embodiment of the application, when the valve is opened, the inclined valve seal 2 is used for guiding gas, and the inclined valve seal 2 is beneficial to guiding and passing of the gas; the valve seal 2 can sealingly engage the face of the fluid outlet 12 when the valve is closed.
In some instances, the rack hooks on rack 34 may be used to mate the blank components together during valve assembly.
Another embodiment of the present application provides a fluid metering device, comprising: the valve comprises a shell and the valve of the previous embodiment, wherein a fluid inlet is arranged on the shell, and the fluid inlet on the shell is communicated with the fluid inlet on the valve frame 1.
In the fluid metering device of the present embodiment, the air inlet on the housing is communicated with the fluid inlet on the valve frame 1, and the valve is switched between an open state and a closed state to open and close the fluid metering device.
Since the present embodiment includes the valve of the above-mentioned embodiment, and the valve seal 2 is disposed in the valve frame 1 of the valve, and the valve seal 2 is rotatably connected to the first end of the valve rod 3, when the valve is in the open valve state, the valve seal 2 is in the inclined state relative to the valve rod 3, which is beneficial to guiding the fluid from the fluid inlet to the fluid outlet, thereby reducing the ventilation resistance, reducing the pressure loss between the fluid inlet and the fluid outlet of the valve, further reducing the pressure loss of the gas metering instrument, improving the quality of the valve, and saving the cost.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A valve, comprising: the valve frame is provided with a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are communicated in the valve frame; a valve seal is arranged in the valve frame;
when the valve is in a valve closing state, the valve seal abuts against the fluid outlet or the fluid inlet;
when the valve is in a valve opening state, the valve seal and the axis of the fluid inlet form a first preset angle;
during the process of switching the valve from the valve closing state to the valve opening state, the valve seal is rotatably connected around the first end of the valve rod.
2. The valve of claim 1, wherein the valve seal is provided with a spherical cavity; a ball body is arranged at the first end of the valve rod;
the ball body is arranged in the spherical cavity, and the valve seal is connected around the ball body of the valve rod in a rotating mode through the spherical cavity.
3. The valve of claim 1, wherein a first stop is provided on an inner wall of the valve housing adjacent the fluid outlet, at least a portion of an edge of the valve seal being located between the first stop and the fluid outlet.
4. A valve according to claim 3, wherein the first position-limiting portion is provided on an inner wall of the valve frame corresponding to the fluid inlet.
5. The valve according to claim 4, wherein a side surface of the first position-limiting portion facing a side of the fluid outlet is at a second predetermined angle with respect to an axis of the fluid inlet, and the second predetermined angle is greater than 0 °.
6. The valve of claim 3, wherein the number of the first position-limiting portions is at least two.
7. A valve according to claim 3, wherein a second stop is provided on the valve stem, or in the valve frame;
the second limiting part and the first limiting part are respectively positioned on two sides of the valve rod, and the second limiting part is opposite to the first limiting part and is further away from the fluid outlet.
8. The valve according to claim 7, wherein when the valve is in an open state, the valve seal abuts against the second limiting portion, and the valve seal forms the first predetermined angle with the axis of the fluid inlet, and the first predetermined angle is greater than or equal to 15 ° and less than or equal to 35 °.
9. A valve according to claim 3, wherein the side of the first position-limiting portion facing the fluid inlet is at a third predetermined angle with respect to the axis of the fluid inlet, the third predetermined angle being different from 90 °.
10. A fluid metering device, comprising: a housing and a valve as claimed in any one of claims 1 to 9, the housing having a fluid inlet, the fluid inlet in the housing being in communication with the fluid inlet in the valve housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010508.8U CN216131393U (en) | 2021-08-24 | 2021-08-24 | Valve and fluid metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010508.8U CN216131393U (en) | 2021-08-24 | 2021-08-24 | Valve and fluid metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216131393U true CN216131393U (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122010508.8U Active CN216131393U (en) | 2021-08-24 | 2021-08-24 | Valve and fluid metering device |
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| Country | Link |
|---|---|
| CN (1) | CN216131393U (en) |
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2021
- 2021-08-24 CN CN202122010508.8U patent/CN216131393U/en active Active
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