CN215371031U - Sealing structure of valve body and valve - Google Patents
Sealing structure of valve body and valve Download PDFInfo
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- CN215371031U CN215371031U CN202022784534.1U CN202022784534U CN215371031U CN 215371031 U CN215371031 U CN 215371031U CN 202022784534 U CN202022784534 U CN 202022784534U CN 215371031 U CN215371031 U CN 215371031U
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Abstract
The utility model discloses a sealing structure of a valve body and a valve, which realize switching and sealing of an exhaust channel in the valve body in a sealing mode. The sealing part between the big valve core and the top surface of the inner cavity of the valve body is arranged in the inner cavity of the valve body; when the large discharge port needs to be closed, the large valve core moves to a closing position, and is matched with the sealing part to close the large discharge port, and a first communication channel communicated with the small discharge port is formed; when the small discharge port needs to be further closed, the first communication channel is sealed by lifting the small valve core, and then the small discharge port can be closed. Only one sealing part is needed to realize the opening and closing of the two valve cores to the two discharge ports respectively, and the problem that the sealing part of the existing combined valve needs to be arranged separately for the two valve cores is solved.
Description
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to a sealing structure of a valve body and a valve.
Background
Fuel tanks currently on the market generally have these two requirements: 1. limited fueling (no overfill); 2. the fuel tank may be vented normally in certain circumstances: when positive pressure exists in the fuel tank, the pressure can be timely relieved, or when negative pressure exists in the fuel tank, air can be timely supplied to the fuel tank. In order to meet the above requirements of a fuel tank, a fuel tank is generally provided with a filling limit valve and at least one rollover valve. The slow market has appeared some new designs, a fuel tank valve can satisfy above-mentioned two functional requirements simultaneously, integrates the function of two valves on a product, just so can reduce the quantity of the valve that the fuel tank needs the configuration, also layout on the fuel tank is easier, we generally call the combination valve, just that refuel limit valve and upset valve have been in the same place, make a product possess both functions simultaneously.
With the issuance of the 'national six' regulation, the evaporative emission requirement of the whole fuel system is more and more strict, the requirement on the dynamic leakage (generally comprising a horizontal shaking test, an angle overturning shaking test, a six-axis shaking test and the like) of the fuel tank is also improved, so that the design of the valve is tested to a certain extent, no matter whether the valves are refueling limit valves or overturning valves or combination valves, because the valves are all installed and fixed on the fuel tank, the valve core is communicated with the inside of the fuel tank, and the pipe orifice of the valve is generally connected to a carbon tank through a pipeline. When the vehicle fluctuates in the running process, fuel in the fuel tank can also surge, and if the valve core in the valve can not seal the exhaust channel in time, the fuel can turn out of the valve exhaust channel with a certain probability and flows out through the pipe orifice to form a leakage phenomenon.
One of the existing combination valves in the market is as follows: the combined valve is large in whole, one side of the combined valve is a valve core of the oiling limit valve, the other side of the combined valve is a valve core of the turnover valve, the two valve cores are not interfered with each other, but because the two valve cores are separated, sealing parts matched with the valve cores are required to be arranged respectively; the other is as follows: the combined valve is similar to a common oiling limit valve in size, a valve core of the oiling limit valve and a valve core of a turnover valve are stacked together, a small floater is stacked on a large floater, the function of the oiling limit valve is realized corresponding to the small floater, the function of the turnover valve is realized corresponding to the large floater, and two stacking forms also need to be provided with two different sealing parts for sealing.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a sealing structure of a valve body and a valve, and aims to solve the problem that a sealing part of the existing combined valve needs to be separately arranged aiming at two valve cores.
In order to solve the problems, the technical scheme of the utility model is as follows:
the utility model relates to a sealing structure of a valve body, which is arranged in the valve body, wherein the top surface of an inner cavity of the valve body is provided with a small discharge port and a large discharge port wound on the small discharge port, the small discharge port corresponds to a first exhaust channel, the large discharge port corresponds to a second exhaust channel, a small valve core corresponds to the small discharge port, and a large valve core corresponds to the large discharge port, and the sealing structure comprises:
the sealing part is arranged in the inner cavity of the valve body, is positioned between the large valve core and the top surface of the inner cavity of the valve body, and is used for matching the large valve core to seal the large discharge port and close the second exhaust channel to form a first communication channel for communicating the inner cavity of the valve body with the small discharge port, and the bottom end of the first communication channel corresponds to the small valve core;
when the large discharge port needs to be closed, the large valve core slides to a closing position and is matched with the sealing part to seal the large discharge port, and the second exhaust channel is closed to form the first communication channel; when the small discharge port needs to be closed, the small valve core slides to a closing position and is matched with the bottom end of the first communication channel to seal the small discharge port, and the first exhaust channel is closed.
The sealing structure of the valve body of the utility model, the sealing part comprises a bearing piece and a sealing component;
the bearing piece is movably arranged in the inner cavity of the valve body or fixedly connected to the big valve core; the bearing piece is provided with a through hole matched with the small discharge port;
the sealing assembly is arranged on the bearing piece and/or the top surface of the inner cavity of the valve body and is used for being matched with the bearing piece to seal the large discharge port and being matched with the small discharge port and the through hole to form the first communication channel.
According to the sealing structure of the valve body, the sealing assembly comprises a large sealing ring, a middle sealing ring and a small sealing ring;
the large sealing ring and the middle sealing ring are arranged on the upper surface of the bearing piece and correspond to the large discharge port; the large sealing ring is sleeved at the large discharge port; the middle sealing ring is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
According to the sealing structure of the valve body, the sealing assembly comprises a large sealing ring, a middle extension ring and a small sealing ring;
the large sealing ring is arranged on the upper surface of the bearing piece, corresponds to the large discharge port and is sleeved on the large discharge port; the middle extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
According to the sealing structure of the valve body, the sealing assembly comprises a large extension ring, a middle sealing ring and a small sealing ring;
the large extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is sleeved on the large discharge port; the middle sealing ring is arranged on the upper surface of the bearing piece, corresponds to the large discharge port and is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
The sealing assembly comprises a large extension ring, a middle extension ring and a small sealing ring;
the large extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is sleeved on the large discharge port; the middle extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
The sealing structure of the valve body comprises a sealing assembly, a sealing component and a sealing component, wherein the sealing assembly comprises a large extension ring and a small extension ring;
the large extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is sleeved on the large discharge port;
the small extension ring is arranged on the top surface of the inner cavity of the valve body and corresponds to the large discharge port; the upper end of the small extension ring is positioned between the large discharge port and the small discharge port, and the diameter of the lower end of the small extension ring is smaller than that of the through hole;
the large extension ring, the outer side wall of the small extension ring and the bearing piece are matched for sealing the large discharge port; the small extension ring is used for matching with the small discharge port to form the first communication channel.
The sealing structure of the valve body comprises a sealing assembly, a sealing assembly and a sealing component, wherein the sealing assembly comprises a large extension ring, a middle extension ring and a small extension ring;
the large extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is sleeved on the large discharge port; the middle extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is positioned between the large discharge port and the small discharge port;
the small extension ring is arranged on the top surface of the inner cavity of the valve body and is used for being matched with the small discharge port to form the first communication channel.
According to the sealing structure of the valve body, when the sealing assembly is arranged on the bearing piece, the sealing assembly and the bearing piece are integrally formed; when the sealing assembly is arranged on the top surface of the inner cavity of the valve body, the sealing assembly and the valve body are integrally formed.
The utility model relates to a sealing structure of a valve body, wherein a bearing piece comprises a bearing unit and a sliding unit; the sliding unit is connected with the inner cavity of the valve body in a sliding manner; the bearing unit is mounted on the sliding unit.
According to the sealing structure of the valve body, the large exhaust port is a plurality of large exhaust holes which are wound on the small exhaust port; the sealing part comprises a sealing assembly, and the sealing assembly comprises a plurality of first sealing elements and second sealing elements; the first sealing elements are respectively arranged at the corresponding large exhaust holes and are used for forming a second communication channel for communicating the inner cavity of the valve body with the large exhaust holes;
the second seal member is provided at the small discharge port for forming the first communicating passage.
According to the sealing structure of the valve body, the sealing part comprises a sealing assembly, and the sealing assembly comprises a large sealing ring, a middle sealing ring and a small sealing ring;
the large sealing ring and the middle sealing ring are arranged on the top surface of the inner cavity of the valve body and correspond to the large discharge port; the large sealing ring is sleeved at the large discharge port; the middle sealing ring is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged on the top surface of the inner cavity of the valve body and used for forming the first communicating channel.
The sealing structure of the valve body of the utility model, the sealing part comprises a bearing piece and a sealing component; the bearing piece is arranged on the top surface of the big valve core; the bearing piece is provided with a through hole matched with the small discharge port;
the sealing assembly comprises a large sealing ring, a middle sealing ring and a small sealing ring; the large sealing ring and the middle sealing ring are arranged on the upper surface of the bearing piece and correspond to the large discharge port; the large sealing ring is sleeved at the large discharge port; the middle sealing ring is positioned between the large discharge port and the small discharge port; the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
A valve according to the present invention includes the sealing structure of the valve body according to any one of the above-described embodiments.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages and positive effects:
in one embodiment of the utility model, a sealing part positioned between a large valve core and the top surface of the inner cavity of the valve body is arranged in the inner cavity of the valve body; the valve body is internally provided with a large exhaust port and a small exhaust port, and is provided with a first exhaust passage corresponding to the small exhaust port and a second exhaust passage corresponding to the large exhaust port. When the large discharge port needs to be closed, the large valve core moves to a closing position, the large discharge port is closed by matching with the sealing part, the second exhaust channel is closed, and a first communication channel communicated with the small discharge port is formed; when the small discharge port needs to be further closed, the first communicating channel is sealed by lifting the small valve core, and the first exhaust channel is closed, so that the small discharge port can be closed. Only one sealing part is needed to realize the opening and closing of the two valve cores to the two discharge ports respectively, and the problem that the sealing part of the existing combined valve needs to be arranged separately for the two valve cores is solved.
Drawings
FIG. 1 is a schematic view of one embodiment of a seal structure of the present invention;
FIG. 2 is a schematic view of another embodiment of a seal structure of the present invention;
FIG. 3 is a schematic view of another embodiment of a seal structure of the present invention;
FIG. 4 is a schematic view of a second vent passage of the sealing structure of the present invention;
FIG. 5 is a schematic view of a first exhaust passage of the sealing structure of the present invention;
FIG. 6 is a schematic view of the sealing portion of the sealing structure of the present invention disposed on a large valve core;
figure 7 is a schematic view of the complete closure of the seal of the present invention.
Description of reference numerals: 1: a valve body; 2: a large discharge port; 3: a small discharge port; 4: a carrier; 401: a sealing unit; 402: a sliding unit; 5: a large valve core; 6: a small valve core; 7: a large seal ring; 8: a middle seal ring; 9: a small seal ring; 10: a middle extension ring; 11: a small extension ring.
Detailed Description
The sealing structure and the valve according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
The combination valve in the embodiment is a combination valve which can realize the functions of a refueling metering valve and a turnover valve at the same time, and is applied and installed in a fuel tank.
The sealing structure of the embodiment is arranged in a valve body 1 of a combined valve with double valve cores and is used for sealing a small discharge port 3 on the top surface of an inner cavity of the valve body 1 and a large discharge port 2 annularly arranged on the small discharge port 3, a first exhaust channel corresponding to the small discharge port 3 and a second exhaust channel corresponding to the large discharge port 2 are arranged in the valve body, and the double valve cores are respectively a small valve core 6 corresponding to the small discharge port 3 and a large valve core 5 corresponding to the large discharge port 2.
Referring to fig. 1 to 5, the sealing structure specifically includes a sealing portion.
The sealing part is arranged in the inner cavity of the valve body 1 and is positioned between the large valve core 5 and the top surface of the inner cavity of the valve body 1, and is used for being matched with the large valve core 5 to seal the large discharge port 2 and form a first communication channel for communicating the inner cavity of the valve body 1 with the small discharge port 3, and the bottom end of the first communication channel corresponds to the small valve core 6.
In actual operation, the valve needle is combined to realize two conditions for different scenes. The first case is closing the large discharge opening 2 but opening the small discharge opening 3, and the second case is closing both the large discharge opening 2 and the small discharge opening 3.
In the first case, the large valve core 5 moves up to the top end of the inner cavity of the valve body 1, and cooperates with the sealing part to seal the large exhaust port 2, close the second exhaust passage and form the first communication passage. In the second case, the small valve core 6 moves up to the top end of the inner cavity of the valve body 1, the top surface of the small valve core 6 is matched with the bottom end of the first communication channel to seal the bottom end opening of the first communication channel, and the second exhaust channel is closed, so that the small discharge port 3 is closed.
Referring to fig. 4, 5 and 7, in the embodiment, a sealing part between the large valve core 5 and the top surface of the inner cavity of the valve body 1 is arranged in the inner cavity of the valve body; when the large discharge port 2 needs to be closed, the large valve core 5 moves to a closing position, and is matched with the sealing part to close the large discharge port 2, and a first communication channel communicated with the small discharge port 3 is formed; when the small discharge port 3 needs to be further closed, the small valve core 6 is lifted to seal the first communication channel, so that the small discharge port 3 can be closed. Only one sealing part is needed to realize the opening and closing of the two valve cores to the two discharge ports respectively, and the problem that the sealing part of the existing combined valve needs to be arranged separately for the two valve cores is solved.
The following further describes the specific structure of the present embodiment:
in this embodiment, the seal may comprise a carrier 4 and a seal assembly, in one implementation. The bearing piece 4 is movably arranged in the inner cavity of the valve body 1 or is fixedly connected with the big valve core 5; and the bearing part 4 is provided with a through hole matched with the small discharge port 3. The sealing assembly is arranged on the bearing piece 4 and/or on the top surface of the inner cavity of the valve body 1 and is used for matching the bearing piece 4 to seal the large discharge port 2 and matching the small discharge port 3 and the through hole to form a first communication channel.
Further, when the sealing assembly is disposed on the carrier 4, the sealing assembly is integrally formed with the carrier 4. When the sealing assembly is arranged on the top surface of the inner cavity of the valve body 1, the sealing assembly and the valve body 1 are integrally formed.
Further, when the sealing assembly is partially disposed on the carrier 4 and partially disposed on the valve body 1, it can be integrally formed with the carrier 4 and the valve body 1, respectively.
In particular, the carrier 4 may in particular comprise a sealing unit 401 and a sliding unit 402. The sliding unit 402 can be slidably connected to the inner cavity of the valve body 1 by means of a sliding rail sliding groove. A sealing unit 401 is mounted on the sliding unit 402 for cooperating with the sealing assembly to effect opening and closing of the two discharge ports.
In this embodiment, the sealing portion may also be a sealing assembly, and the sealing assembly specifically includes a plurality of first sealing elements and second sealing elements; the first sealing elements are respectively arranged on the corresponding large exhaust holes 2 and are used for forming a second communication channel for communicating the inner cavity of the valve body 1 with the large exhaust holes 2; the second seal is provided on the corresponding small discharge port 3 for forming the first communicating passage.
When a large discharge port needs to be closed, the large valve core 2 moves upwards to the top end of the inner cavity of the valve body 1, and the top surface of the large valve core 5 is matched with the bottom end of the second communication channel to seal the bottom end opening of the second communication channel, so that the large discharge port 2 is closed. When the small discharge port needs to be closed, the small valve core 6 moves upwards to the top end of the inner cavity of the valve body 1, and the top surface of the small valve core 6 is matched with the bottom end of the first communication channel to seal the bottom end opening of the first communication channel, so that the small discharge port 3 is closed.
In this embodiment the sealing portion may also be another sealing assembly comprising a large sealing ring 7, a medium sealing ring 8 and a small sealing ring 9. The large sealing ring 7, the middle sealing ring 8 and the small sealing ring 9 are all arranged on the top surface of the inner cavity of the valve body 1 and correspond to the large discharge port 2. The large discharge port 2 is sleeved with the large sealing ring 7, the middle sealing ring 8 is positioned between the large discharge port 2 and the small discharge port 3, and the small sealing ring 9 is also positioned between the large discharge port 2 and the small discharge port 3 to form a first communication channel.
When the large discharge port 2 needs to be closed, the large valve core 2 moves upwards to the top end of the inner cavity of the valve body 1, and the top surface of the large valve core 5 is matched with the bottom ends of the large sealing ring 7 and the middle sealing ring 8 to close the large discharge port 2. When the small discharge port 3 needs to be closed, the small valve core 6 moves upwards to the top end of the inner cavity of the valve body 1, and the top surface of the small valve core 6 is matched with the bottom end of the first communication channel to seal the bottom end opening of the first communication channel, so that the small discharge port 3 is closed.
Referring to fig. 7, in this embodiment, the seal portion may also be a carrier and seal assembly disposed directly on the large spool. The bearing piece is arranged on the top surface of the large valve core, and the bearing piece is provided with a through hole matched with the small discharge port. The seal assembly may include a large seal ring 7, a medium seal ring 8 and a small seal ring 9. The large sealing ring 7 and the middle sealing ring 8 are arranged on the upper surface of the bearing piece and correspond to the large discharge port 2; the large sealing ring 7 is sleeved on the large discharge port 2; the middle sealing ring 8 is positioned between the large discharge port 2 and the small discharge port 3; the small sealing ring 9 is arranged at the through hole and is used for forming a first communication channel in a matching way.
When the large discharge port 2 needs to be closed, the large valve core 2 moves upwards to the top end of the inner cavity of the valve body 1, and the upper ends of the large sealing ring 7 and the middle sealing ring 8 are matched with the top surface of the inner cavity of the valve body to close the large discharge port 2. When the small discharge port 3 needs to be closed, the small valve core 6 moves upwards to the top end of the inner cavity of the valve body 1, and the top surface of the small valve core 6 is matched with the bottom end of the first communication channel to seal the bottom end opening of the first communication channel, so that the small discharge port 3 is closed.
Of course, in other embodiments, the seal assembly may be directly mounted on the big valve core without using a bearing member, and is not particularly limited herein
Example two
This example is a detailed description of several embodiments of the seal assembly in the first example above:
the first implementation mode comprises the following steps: with reference to fig. 1, the sealing assembly comprises in particular a large sealing ring 7, a medium sealing ring 8 and a small sealing ring 9.
The upper end face of the carrier 4 is provided with a large sealing ring 7 and a medium sealing ring 8.
The diameter of the large sealing ring 7 is larger than the maximum diameter of the large outlet 2, and the diameter of the middle sealing ring 8 is smaller than the minimum diameter of the large outlet 2 and the maximum diameter of the small outlet 3. The arrangement is to ensure that when the bearing piece 4 is positioned at the closing position, the bearing piece can be tightly attached to the wall surfaces of the top surface of the inner cavity of the valve body 1, which are positioned at the inner side and the outer side of the large discharge port 2, so as to realize the sealing of the large discharge port 2.
When the large outlet 2 is sealed, the small outlet 3 is connected to the inner cavity of the valve body 1 through the through hole of the carrier 4. In order to seal the small outlet 3, a small sealing ring 9 is provided on the lower end face of the sealing ring, and the diameter of the small sealing ring 9 needs to be larger than that of the through hole. The small sealing ring 9 can contact with the top surface of the small valve core 6 and realize the sealing of the small discharge port 3 when the small valve core 6 ascends.
The second embodiment: referring to fig. 2, this embodiment is a modification of the first embodiment described above. The arrangement mode of the large sealing ring 7 and the small sealing ring 9 is unchanged, and the middle sealing ring 8 is removed. Specifically, on the wall surface of the top surface of the inner cavity of the valve body 1 between the large discharge port 2 and the small discharge port 3, a middle extension ring 10 is provided, and the lower end of the middle extension ring 10 is used for contacting with the upper end surface of the carrier 4. When the bearing part 4 moves to the closing position, the sealing of the large discharge port 2 is realized by matching with the large sealing ring 7, and meanwhile, the communication of the small discharge port 3 and the inner cavity of the valve body 1 can be realized by matching with the through hole of the bearing part 4. The sealing mode of the small sealing ring 9 is the same as that of the first embodiment, and is not described again.
The third embodiment is as follows: this embodiment is also a modification of the first embodiment described above. The arrangement of the middle seal ring 8 and the small seal ring 9 is unchanged, and the large seal ring 7 is removed. Specifically, a large extension ring is arranged on the wall surface of the top surface of the inner cavity of the valve body 1, which is positioned outside the large discharge port 2, and the lower end of the large extension ring is used for contacting with the upper end surface of the bearing piece 4. So that the cooperating middle sealing ring 8 effects a sealing of the large discharge opening 2 when the carrier 4 is moved to the closed position. The sealing mode of the middle sealing ring 8 and the small sealing ring 9 to the small discharge port 3 is the same as that of the first embodiment, and the description is omitted.
The fourth embodiment: this embodiment is also a modification of the first embodiment described above. The small seal ring 9 is arranged in a constant manner, and the large seal ring 7 and the middle seal ring 8 are removed. Specifically, a large extension ring is arranged on the wall surface of the top surface of the inner cavity of the valve body 1, which is positioned outside the large discharge port 2, and the lower end of the large extension ring is used for contacting with the upper end surface of the bearing piece 4. On the wall surface of the top surface of the inner cavity of the valve body 1 between the large discharge opening 2 and the small discharge opening 3, a middle extension ring 10 is provided, the lower end of the middle extension ring 10 also being used for contacting the upper end surface of the carrier 4. So that the large and medium extension rings 10 cooperate with the carrier 4 to effect a seal against the large discharge opening 2 when the carrier 4 is moved to the closed position. The sealing manner of the small sealing ring 9 to the small discharge port 3 is the same as that of the first embodiment, and the description thereof is omitted.
The fifth embodiment: referring to fig. 3, this embodiment is a modification of the first embodiment described above. The large seal ring 7, the middle seal ring 8 and the small seal ring 9 are all removed. Specifically, a large extension ring is arranged on the wall surface of the top surface of the inner cavity of the valve body 1, which is positioned outside the large discharge port 2, and the lower end of the large extension ring is used for contacting with the upper end surface of the bearing piece 4. On the wall surface of the top surface of the inner cavity of the valve body 1 between the large discharge port 2 and the small discharge port 3, a small extension ring 11 is arranged, the diameter of the upper end of the small extension ring 11 is larger than that of the inner ring of the bearing element 4, and the diameter of the lower end of the small extension ring 11 is smaller than that of the inner ring of the bearing element 4, namely, the outer side wall of the small extension ring 11 is used for contacting with the hole wall of the through hole of the bearing element 4. So that the engagement of the carrier 4 with the outer side wall of the small extension ring 11 and the large extension ring effect a sealing of the large discharge opening 2 when the carrier 4 is moved to the closed position. The lower end of the small extension ring 11 cooperates with the upper surface of the small float to effect sealing of the small discharge opening 3.
Of course, in other embodiments, the sealing assembly may be provided on the first and second floats to directly seal with the large discharge port 2 and the small discharge port 3; or may be directly disposed on each of the large discharge port 2 and the small discharge port 3, and a sealing ring may be extended downward to match with the top surface of the valve core for sealing, and the specific implementation manner is many and is not limited herein.
In this embodiment, an annular sealing ring or extension ring is used to seal the large outlet 2 in cooperation with the carrier 4 and the top surface of the inner cavity of the valve body 1, and to seal the small outlet 3 in cooperation with the small valve element 6. The provision of the annular member facilitates the closing and opening of the two discharge openings. For example, when the large discharge port 2 is closed or opened, only the annular surface at the upper end of the annular member needs to be attached to the top surface of the inner cavity of the valve body 1, and compared with the sealing manner of the discharge port by a sealing member such as a sealing block, the attached area is small, so that the force required for closing and opening the large discharge port is small, and the valve can be opened and closed more flexibly.
EXAMPLE III
A combination valve comprising the sealing structure of either embodiment one or embodiment two. By providing a sliding carrier 4 in the valve body 1 and by providing sealing means on the carrier 4 and/or the valve cartridge. When the large discharge port 2 needs to be closed, the sealing assembly is matched with the bearing piece 4 to seal the large discharge port 2, and meanwhile, a first communication channel for communicating the inner cavity of the valve body 1 with the small discharge port 3 is reserved through a through hole in the bearing piece 4; when the small discharge port 3 needs to be further closed, the small valve core 6 is lifted to seal the first communication channel, so that the small discharge port 3 can be closed. The two valve cores can be opened and closed to the two discharge ports by only one bearing part 4, and the problem that sealing parts of the existing combined valve need to be separately arranged for the two valve cores is solved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (14)
1. The utility model provides a seal structure of valve body, its characterized in that sets up in the valve body of a valve, be equipped with little discharge port on the valve body inner chamber top surface and around locating the big discharge port of little discharge port, little discharge port corresponds first exhaust passage, big discharge port corresponds second exhaust passage, with little discharge port correspond for little case, with big discharge port corresponds for big case, includes:
the sealing part is arranged in the inner cavity of the valve body, is positioned between the large valve core and the top surface of the inner cavity of the valve body, and is used for matching the large valve core to seal the large discharge port and close the second exhaust channel to form a first communication channel for communicating the inner cavity of the valve body with the small discharge port, and the bottom end of the first communication channel corresponds to the small valve core;
when the large discharge port needs to be closed, the large valve core slides to a closing position and is matched with the sealing part to seal the large discharge port, and the second exhaust channel is closed to form the first communication channel; when the small discharge port needs to be closed, the small valve core slides to a closing position and is matched with the bottom end of the first communication channel to seal the small discharge port, and the first exhaust channel is closed.
2. A sealing structure of a valve body according to claim 1, wherein the sealing portion includes a carrier and a seal assembly;
the bearing piece is movably arranged in the inner cavity of the valve body or fixedly connected to the big valve core; the bearing piece is provided with a through hole matched with the small discharge port;
the sealing assembly is arranged on the bearing piece and/or the top surface of the inner cavity of the valve body and is used for being matched with the bearing piece to seal the large discharge port and being matched with the small discharge port and the through hole to form the first communication channel.
3. A sealing structure of a valve body according to claim 2, wherein the sealing assembly includes a large sealing ring, a middle sealing ring and a small sealing ring;
the large sealing ring and the middle sealing ring are arranged on the upper surface of the bearing piece and correspond to the large discharge port; the large sealing ring is sleeved at the large discharge port; the middle sealing ring is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
4. A sealing structure for a valve body as defined in claim 2, wherein said seal assembly includes a large seal ring, a mid-extension ring and a small seal ring;
the large sealing ring is arranged on the upper surface of the bearing piece, corresponds to the large discharge port and is sleeved on the large discharge port; the middle extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
5. A sealing structure for a valve body according to claim 2, wherein said seal assembly includes a large extension ring, a middle seal ring and a small seal ring;
the large extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is sleeved on the large discharge port; the middle sealing ring is arranged on the upper surface of the bearing piece, corresponds to the large discharge port and is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
6. A sealing structure for a valve body according to claim 2, wherein said seal assembly includes a large extension ring, a middle extension ring and a small seal ring;
the large extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is sleeved on the large discharge port; the middle extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
7. A seal structure of a valve body according to claim 2, wherein said seal assembly includes a large extension ring and a small extension ring;
the large extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is sleeved on the large discharge port;
the small extension ring is arranged on the top surface of the inner cavity of the valve body and corresponds to the large discharge port; the upper end of the small extension ring is positioned between the large discharge port and the small discharge port, and the diameter of the lower end of the small extension ring is smaller than that of the through hole;
the large extension ring, the outer side wall of the small extension ring and the bearing piece are matched for sealing the large discharge port; the small extension ring is used for matching with the small discharge port to form the first communication channel.
8. A seal structure of a valve body according to claim 2, wherein said seal assembly comprises a seal assembly including a large extension ring, a middle extension ring and a small extension ring;
the large extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is sleeved on the large discharge port; the middle extension ring is arranged on the top surface of the inner cavity of the valve body, corresponds to the large discharge port and is positioned between the large discharge port and the small discharge port;
the small extension ring is arranged on the top surface of the inner cavity of the valve body and is used for being matched with the small discharge port to form the first communication channel.
9. A sealing arrangement for a valve body as claimed in claim 2, wherein said seal assembly is integrally formed with said carrier when said seal assembly is disposed on said carrier; when the sealing assembly is arranged on the top surface of the inner cavity of the valve body, the sealing assembly and the valve body are integrally formed.
10. A sealing structure of a valve body according to claim 2, wherein the carrier includes a carrier unit and a slide unit; the sliding unit is connected with the inner cavity of the valve body in a sliding manner; the bearing unit is mounted on the sliding unit.
11. A sealing structure of a valve body according to claim 1, wherein said large discharge port is a plurality of large discharge holes provided around the small discharge port; the sealing part comprises a sealing assembly, and the sealing assembly comprises a plurality of first sealing elements and second sealing elements; the first sealing elements are respectively arranged at the corresponding large exhaust holes and are used for forming a second communication channel for communicating the inner cavity of the valve body with the large exhaust holes;
the second seal member is provided at the small discharge port for forming the first communicating passage.
12. A sealing structure of a valve body according to claim 1, wherein the sealing portion comprises a seal assembly including a large seal ring, a middle seal ring, and a small seal ring;
the large sealing ring and the middle sealing ring are arranged on the top surface of the inner cavity of the valve body and correspond to the large discharge port; the large sealing ring is sleeved at the large discharge port; the middle sealing ring is positioned between the large discharge port and the small discharge port;
the small sealing ring is arranged on the top surface of the inner cavity of the valve body and used for forming the first communicating channel.
13. A sealing structure of a valve body according to claim 1, wherein the sealing portion includes a carrier and a seal assembly; the bearing piece is arranged on the top surface of the big valve core; the bearing piece is provided with a through hole matched with the small discharge port;
the sealing assembly comprises a large sealing ring, a middle sealing ring and a small sealing ring; the large sealing ring and the middle sealing ring are arranged on the upper surface of the bearing piece and correspond to the large discharge port; the large sealing ring is sleeved at the large discharge port; the middle sealing ring is positioned between the large discharge port and the small discharge port; the small sealing ring is arranged at the through hole and is used for forming the first communicating channel in a matching way.
14. A valve comprising a sealing structure of the valve body according to any one of claims 1 to 13.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022784534.1U CN215371031U (en) | 2020-11-26 | 2020-11-26 | Sealing structure of valve body and valve |
| US18/038,909 US20240019030A1 (en) | 2020-11-26 | 2021-01-25 | Sealing structure of valve body, valve and CFLVV valve |
| PCT/CN2021/073574 WO2022110533A1 (en) | 2020-11-26 | 2021-01-25 | Sealing structure of valve body, valve and cflvv valve |
| EP21896053.2A EP4253807A1 (en) | 2020-11-26 | 2021-01-25 | Sealing structure of valve body, valve and cflvv valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022784534.1U CN215371031U (en) | 2020-11-26 | 2020-11-26 | Sealing structure of valve body and valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215371031U true CN215371031U (en) | 2021-12-31 |
Family
ID=79599341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022784534.1U Active CN215371031U (en) | 2020-11-26 | 2020-11-26 | Sealing structure of valve body and valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215371031U (en) |
-
2020
- 2020-11-26 CN CN202022784534.1U patent/CN215371031U/en active Active
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Address after: B1-2, Zhichuang Park, Zhongdai street, Pinghu City, Jiaxing City, Zhejiang Province Patentee after: Yingzhi Aiyi intelligent automobile technology (Jiaxing) Co.,Ltd. Address before: B1-2, Zhichuang Park, Zhongdai street, Pinghu City, Jiaxing City, Zhejiang Province Patentee before: Aiyi intelligent automobile technology (Jiaxing) Co.,Ltd. |
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