CN114517755A - Switch valve and oil supply system - Google Patents

Switch valve and oil supply system Download PDF

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Publication number
CN114517755A
CN114517755A CN202210141820.7A CN202210141820A CN114517755A CN 114517755 A CN114517755 A CN 114517755A CN 202210141820 A CN202210141820 A CN 202210141820A CN 114517755 A CN114517755 A CN 114517755A
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CN
China
Prior art keywords
valve
sealing
sealing sleeve
passage
valve core
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.)
Pending
Application number
CN202210141820.7A
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Chinese (zh)
Inventor
尹燕升
张驰
朱宏志
张贵华
贾旭哲
丁心飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FAW Jiefang Automotive Co Ltd
Original Assignee
FAW Jiefang Automotive Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FAW Jiefang Automotive Co Ltd filed Critical FAW Jiefang Automotive Co Ltd
Priority to CN202210141820.7A priority Critical patent/CN114517755A/en
Publication of CN114517755A publication Critical patent/CN114517755A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The invention belongs to the technical field of oil supply systems of diesel vehicles, and discloses a switching valve and an oil supply system, which comprise a valve body, a valve core and a sealing sleeve, wherein the valve body is provided with a valve cavity, a first passage and a second passage, the first passage and the second passage are respectively communicated with the valve cavity, the valve core is arranged in the valve cavity, the valve core is provided with a communication passage, the sealing sleeve is sleeved outside the valve core and clamped between the valve body and the valve core, two liquid passing holes are formed in the sealing sleeve, a first sealing convex ring is convexly arranged on the inner side of the sealing sleeve around the liquid passing holes and abuts against the valve core, the two liquid passing holes are respectively communicated with the first passage and the second passage, when the valve core is in a communication position, two ports of the communication passage are respectively communicated with the two liquid passing holes, and the oil supply system comprises the switching valve. According to the invention, the sealing sleeve is arranged on the valve core, and the first sealing convex ring is arranged on the sealing sleeve, so that two ports of the communication channel on the valve core are integrally sealed, and the sealing effect is improved.

Description

Switch valve and oil supply system
Technical Field
The invention relates to the technical field of oil supply systems of diesel vehicles, in particular to a switch valve and an oil supply system.
Background
The conventional diesel vehicle oil supply system is divided into a high pressure part and a low pressure part. The high-pressure part is arranged on an engine and comprises an oil delivery pump, a diesel fine filter, a high-pressure oil pump, a high-pressure oil rail, an oil injector and a pipeline for connecting the components. The low-pressure part is arranged on a chassis of the whole vehicle and comprises an oil tank, a diesel oil coarse filter and a pipeline for connecting the parts. The interface of the high pressure part and the low pressure part is an oil transfer pump, the oil transfer pump rotates to generate negative pressure at the inlet of the oil transfer pump, diesel oil is pumped from the low pressure part, meanwhile, the pumped negative pressure diesel oil is established into positive pressure diesel oil (generally 4-10bar), and the positive pressure diesel oil is sent to the rear high pressure part.
In the existing diesel vehicle oil supply system, in order to realize the high-efficiency utilization of high-temperature fuel, a circulation passage is arranged between an oil outlet pipe and an oil return pipe which are connected with an oil tank, a switch valve is arranged on the circulation passage, and the high-temperature fuel flowing out of an engine is selectively led back to the engine or the fuel led out of the oil tank is led back to the oil tank at different stages through the opening and closing of the switch valve.
In the existing switch valve, a plurality of sealing rings are clamped between a valve body and a valve core for realizing the sealing effect, and the sealing rings are mutually independent, poor in sealing effect and incapable of meeting the sealing requirement of high-pressure fuel.
Disclosure of Invention
The invention aims to provide a switch valve and an oil supply system, which can be used for integrally sealing between a valve body and a valve core and ensuring the sealing effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
an on-off valve comprising:
the valve comprises a valve body, a valve cavity, a first channel and a second channel, wherein the valve cavity, the first channel and the second channel are arranged on the valve body and are respectively communicated with the valve cavity;
the valve core is arranged in the valve cavity, and a communication channel is arranged on the valve core;
further comprising:
the sealing sleeve is arranged on the outer side of the valve core and clamped between the valve body and the valve core, the sealing sleeve is fixedly arranged in the valve cavity, the valve core can rotate relative to the sealing sleeve, two liquid passing holes are formed in the sealing sleeve, a first sealing convex ring is convexly arranged on the inner side of the sealing sleeve and surrounds the liquid passing holes, the first sealing convex ring is abutted to the valve core, the two liquid passing holes are respectively communicated with the first channel and the second channel, and when the valve core is located at a communication position, the two ports of the communication channel are respectively communicated with the two liquid passing holes.
Preferably, the outer side of the sealing sleeve is convexly provided with a second sealing convex ring around the liquid passing hole, and the second sealing convex ring abuts against the valve body.
Preferably, the inner side of the sealing sleeve is further provided with two third sealing convex rings, the two third sealing convex rings respectively abut against the valve core, and when the valve core is in the off position, the two third sealing convex rings respectively surround the outer sides of the two ports of the communication channel.
Preferably, two fourth sealing convex rings are further arranged on the outer side of the sealing sleeve, and the two fourth sealing convex rings are opposite to the two third sealing convex rings one by one and respectively abut against the valve body.
Preferably, the outer side of the sealing sleeve is further provided with a positioning groove, the positioning groove is formed in the axial direction of the sealing sleeve in a penetrating mode, the inner wall of the valve cavity is provided with a convex rib, and the convex rib is clamped into the positioning groove.
Preferably, the sealing sleeve and the valve core are in interference fit.
Preferably, the valve core is of a column-shaped structure, and the sealing sleeve is of a cylinder-shaped structure with openings at two ends.
Preferably, the axial length of the valve core is greater than the axial length of the sealing sleeve.
Preferably, both ends of the valve core protrude from both end openings of the sealing sleeve.
The utility model provides an oil supply system, includes oil pipe, returns oil pipe and foretell ooff valve, the ooff valve set up in oil pipe with return between the oil pipe, first passageway intercommunication oil pipe, the second passageway intercommunication return oil pipe.
The invention has the beneficial effects that:
through set up the seal cover on the case to set up first sealed bulge loop on the seal cover, carry out the integral seal to two ports of intercommunication passageway on the case, improved sealed effect, the seal cover has increased cross-sectional size for solitary sealing washer, is difficult for becoming invalid when using, has improved life.
Drawings
Fig. 1 is a sectional view of a switching valve according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the structure of FIG. 1;
FIG. 3 is a cross-sectional view of a seal cap, a first seal ring, a second seal ring, and a seal cartridge in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the sealing sleeve according to the embodiment of the invention.
In the figure:
1. a valve body; 11. a valve cavity; 12. a first channel; 13. a second channel; 14. a liquid return channel; 15. a first flow passage; 16. a second flow passage;
2. a valve core; 21. a communication channel;
3. a sealing cover;
4. a drive shaft;
5. a first seal ring;
6. a second seal ring;
7. sealing sleeves; 71. a liquid passing hole; 72. a first sealing convex ring; 73. a second sealing convex ring; 74. a third sealing convex ring; 75. a fourth sealing convex ring; 76. and a positioning groove.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1 to 4, the present invention provides a switching valve including a valve body 1, a valve core 2, and a sealing sleeve 7. The valve body 1 is provided with a valve cavity 11, a first passage 12 and a second passage 13, the first passage 12 and the second passage 13 are respectively communicated with the valve cavity 11, the valve core 2 is arranged in the valve cavity 11, the valve core 2 is provided with a communication passage 21, the sealing sleeve 7 is sleeved on the outer side of the valve core 2 and clamped between the valve body 1 and the valve core 2, the sealing sleeve 7 is fixedly arranged in the valve cavity 11, the valve core 2 can rotate relative to the sealing sleeve 7, the sealing sleeve 7 is provided with two liquid passing holes 71, the inner side of the sealing sleeve 7 is convexly provided with a first sealing convex ring 72 around the liquid passing holes 71, the first sealing convex ring 72 is abutted against the valve core 2, the two liquid passing holes 71 are respectively communicated with the first passage 12 and the second passage 13, and when the valve core 2 is in a communication position, two ports of the communication passage 21 are respectively communicated with the two liquid passing holes 71.
In the invention, the sealing sleeve 7 is arranged on the valve core 2, and the first sealing convex ring 72 is arranged on the sealing sleeve 7 to integrally seal the two ports of the communication channel 21 on the valve core 2, so that the sealing effect is improved, the section size of the sealing sleeve 7 is increased compared with that of an independent sealing ring, the sealing sleeve is not easy to lose efficacy when in use, and the service life is prolonged.
The specific structure of the on-off valve of the present invention is explained below:
the switching valve in the embodiment includes a valve body 1, a valve core 2, a sealing cover 3, a driving shaft 4, a first sealing ring 5, a second sealing ring 6, and a sealing sleeve 7.
Specifically, as shown in fig. 1 to 3, the valve body 1 serves as a support structure on which a valve chamber 11, a first passage 12, a second passage 13, a return passage 14, a first flow passage 15, and a second flow passage 16 are integrally formed.
More specifically, the first passage 12 and the second passage 13 are respectively communicated with the valve cavity 11, and the valve core 2 is arranged in the valve cavity 11 and controls the on-off of the first passage 12 and the second passage 13.
In this embodiment, the second passage 13 is communicated with the oil return pipe when in use, and because the switch valve cannot achieve 100% sealing, two ends of the liquid return passage 14 are respectively communicated with the valve cavity 11 and the second passage 13, so that oil leaked in the valve cavity 11 can flow into the second passage 13 through the liquid return passage 14 under the action of pressure, and the oil pressure in the valve cavity 11 is effectively reduced.
More specifically, the valve cavity 11 is divided into a sealing cavity and an action cavity, the sealing cover 3 is fixedly arranged in the sealing cavity, the first channel 12 and the second channel 13 are respectively communicated with the action cavity, and the valve core 2 in the action cavity controls the on-off.
In the present embodiment, the sealing cavity and the actuating cavity are coaxially connected and have a cylindrical structure, and the radius of the sealing cavity is greater than that of the actuating cavity, so that the sealing cover 3 is assembled stably and reliably.
Since the sealed cavity has a communication hole for communicating with the outside for penetrating the driving shaft 4, the oil is leaked into the sealed cavity more, and in one embodiment, the liquid return channel 14 is provided with one, and two ends of the liquid return channel are respectively communicated with the sealed cavity and the second channel 13.
In another embodiment, two liquid return channels 14 are provided, the two liquid return channels 14 are respectively located at two sides of the second channel 13, two ends of one liquid return channel 14 are respectively communicated with the sealed cavity and the second channel 13, and two ends of the other liquid return channel 14 are respectively communicated with the actuating cavity and the second channel 13, so that the oil liquid in the valve chamber 11 can be returned relative to the two sides of the axis of the second channel 13.
In this embodiment, inside the valve chamber 11, a gap flow passage is formed between the valve element 2 and the inner wall of the valve chamber 11 and between the seal cover 3 and the inner wall of the valve chamber 11, and the liquid return passage 14 communicates with the gap flow passage, and can guide the oil flow in the gap flow passage to the second passage 13.
Specifically, both ends of the first flow channel 15 communicate with the outside, the first channel 12 communicates with the sidewall of the first flow channel 15, both ends of the second flow channel 16 communicate with the outside, and the second channel 13 communicates with the sidewall of the second flow channel 16. The valve body 1 can be conveniently communicated with an external pipeline by arranging the first flow passage 15 and the second flow passage 16.
In the present embodiment, the diameters of the first channel 12 and the second channel 13 are the same, the diameters of the first flow channel 15 and the second flow channel 16 are the same, the diameter of the liquid return channel 14 is smaller than the diameter of the second channel 13, and the diameter of the second channel 13 is smaller than the diameter of the second flow channel 16.
Specifically, the valve element 2 is provided with a communication passage 21, and when the valve element 2 is in the communication position, two ports of the communication passage 21 are respectively communicated with the first passage 12 and the second passage 13.
More specifically, the valve core 2 is a cylindrical structure, in this embodiment, the communicating channel 21 is radially through the valve core 2, the first channel 12 and the second channel 13 are coaxially arranged, the driving shaft 4 controls the on-off of the first channel 12 and the second channel 13 by driving the valve core 2 to rotate, when the valve core 2 is in the communicating position, the valve core 2 rotates until the communicating channel 21, the first channel 12 and the second channel 13 are coaxial, and the first channel 12 and the second channel 13 are communicated. When the spool 2 is in the off position, the spool 2 rotates until the communication passage 21 is offset from the first passage 12 and the second passage 13, and the first passage 12 and the second passage 13 are off.
Specifically, sealed lid 3 is the cylinder type, is arranged in sealed cavity, ends in sealed cavity and the step department of action cavity, is provided with the annular groove on its terminal surface of keeping away from the action cavity, is provided with seal ring in the annular groove, and sealed lid 3 supports through seal ring and leans on the end wall that deviates from the action cavity in sealed cavity, and drive shaft 4 passes from seal ring.
More specifically, the end face, facing the action cavity, of the sealing cover 3 is provided with an avoiding groove, and the valve core 2 partially extends into the avoiding groove.
In this embodiment, a through hole is formed through the axis of the sealing cover 3, and the driving shaft 4 is located in the through hole.
Specifically, a driving shaft 4 is connected to the valve element 2 after passing through the sealing cover 3, and a driving part such as a motor drives the valve element 2 to rotate through the driving shaft 4.
In this embodiment, a fixing groove is provided on an end surface of the valve element 2 facing the driving shaft 4, and the driving shaft 4 extends into the fixing groove to be fixedly connected with the valve element 2.
Specifically, the first sealing ring 5 is sleeved on the periphery of the sealing cover 3, and is clamped between the valve body 1 and the sealing cover 3 to serve as a static sealing ring.
More specifically, the outer side wall of the sealing cover 3 is annularly provided with a first accommodating groove, the first sealing ring 5 is sleeved in the first accommodating groove, and the driving shaft 4 is located at the axis of the first sealing ring 5.
In this embodiment, in order to ensure the sealing effect, the first sealing ring 5 is disposed away from the second channel 13 relative to the communication port between the liquid return channel 14 and the sealing cavity, that is, the liquid return channel 14 is communicated with the position between the first sealing ring 5 and the sealing sleeve 7.
Specifically, the second sealing ring 6 is sleeved on the periphery of the driving shaft 4, clamped between the sealing cover 3 and the driving shaft 4, moves along with the driving shaft 4 and serves as a movable sealing ring, and the height of the second sealing ring 6 is higher than that of the first sealing ring 5.
More specifically, the hole wall of the penetrating hole of the sealing cover 3 is annularly provided with a second accommodating groove, the second sealing ring 6 extends into the second accommodating groove, and the driving shaft 4 drives the second sealing ring 6 to rotate when rotating.
Specifically, as shown in fig. 3 and 4, the sealing sleeve 7 is sleeved outside the valve element 2, is in interference fit with the valve element 2, is clamped between the valve body 1 and the valve element 2, and is fixedly arranged relative to the valve body 1, the valve element 2 can rotate relative to the sealing sleeve 7, one axial end of the sealing sleeve 7 abuts against the sealing cover 3, the other axial end of the sealing sleeve 7 abuts against a step on the side wall of the actuating cavity, two liquid passing holes 71 are arranged on the sealing sleeve 7, the two liquid passing holes 71 are respectively communicated with the first channel 12 and the second channel 13, when the valve element 2 is in a communication position, two ports of the communication channel 21 are respectively communicated with the two liquid passing holes 71, and the first channel 12 and the second channel 13 are communicated with the two liquid passing holes 71. Through setting up seal cover 7 for the sealed more comprehensive convenient between case 2 and the valve body 1.
More specifically, the sealing sleeve 7 is a cylindrical structure with two open ends, and is sleeved on the outer peripheral wall of the valve core 2, and the two liquid passing holes 71 are located on two opposite sides of the sealing sleeve 7.
In this embodiment, the axial length of the valve element 2 is greater than the axial length of the sealing sleeve 7, the two ends of the valve element 2 extend out of the openings of the two ends of the sealing sleeve 7, one end of the valve element is connected to the driving shaft 4, and the other end of the valve element abuts against the end wall of the action cavity which deviates from one end of the sealing cavity.
Specifically, the inner side of the sealing sleeve 7 is convexly provided with a first sealing convex ring 72 around the liquid through hole 71, and the first sealing convex ring 72 abuts against the valve core 2. By providing the first sealing convex ring 72, it is possible to more reliably seal the port of the communication passage 21. The outer side of the sealing sleeve 7 is convexly provided with a second sealing convex ring 73 surrounding the liquid hole 71, and the second sealing convex ring 73 is abutted against the valve body 1. The provision of the second sealing convex ring 73 enables the ports of the first passage 12 and the second passage 13 to be more reliably sealed.
More specifically, the inner side of the sealing sleeve 7 is further provided with two third sealing convex rings 74, the two third sealing convex rings 74 respectively abut against the valve core 2, and when the valve core 2 is in the off position, the two third sealing convex rings 74 respectively surround the outer sides of the two ports of the communication channel 21.
Specifically, the outside of seal cover 7 still is provided with two fourth sealed bulge loops 75, and two fourth sealed bulge loops 75 are just right to one with two third sealed bulge loops 74, support respectively and lean on valve body 1, and balanced third sealed bulge loop 74 supports the reaction force that receives when supporting and leaning on case 2 for be in the off position when case 2, more reliable to the sealed of intercommunication passageway 21.
More specifically, the outer side of the sealing sleeve 7 is further provided with two alignment grooves 76, each fourth sealing convex ring 75 is provided with one alignment groove 76, the alignment grooves 76 extend in the axial direction of the sealing sleeve 7 and penetrate through the fourth sealing convex rings 75, a convex rib is arranged on the inner wall of the valve cavity 11 and clamped into the alignment grooves 76, and the convex rib is matched with the alignment grooves 76, so that the sealing sleeve 7 is prevented from being displaced along with the movement of the valve core 2.
In this embodiment, an angle of 90 ° is formed between the off position and the on position of the valve element 2, one first sealing convex ring 72 and one second sealing convex ring 73 are configured for each liquid passing hole 71, that is, two first sealing convex rings 72 and two second sealing convex rings 73 are provided, on the inner side and the outer side of the sealing sleeve 7, the first sealing convex rings 72 and the second sealing convex rings 73 are arranged oppositely, the third sealing convex rings 74 and the fourth sealing convex rings 75 are arranged rightly, in an upward position, the two third sealing convex rings 74 are located between the two first sealing convex rings 72, on the inner side of the sealing sleeve 7, the adjacent third sealing convex rings 74 and the first sealing convex rings 72 are located at an angle of 90 ° in a direction, the two fourth sealing convex rings 75 are located between the two second sealing convex rings 73, and on the outer side of the sealing sleeve 7, the adjacent fourth sealing convex rings 75 and the second sealing convex rings 73 are located at an angle of 90 ° in a direction.
The invention also provides an oil supply system which comprises the oil outlet pipe, the oil return pipe and the switch valve, wherein the switch valve is arranged between the oil outlet pipe and the oil return pipe, the first channel 12 is communicated with the oil outlet pipe, and the second channel 13 is communicated with the oil return pipe.
Specifically, the oil outlet pipe is directly connected to the first flow passage 15, and the return pipe is directly connected to the second flow passage 16.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An on-off valve comprising:
the valve comprises a valve body (1), wherein a valve cavity (11), a first passage (12) and a second passage (13) are arranged on the valve body (1), and the first passage (12) and the second passage (13) are respectively communicated with the valve cavity (11);
the valve core (2) is arranged in the valve cavity (11), and a communication channel (21) is arranged on the valve core (2);
it is characterized by also comprising:
the valve comprises a sealing sleeve (7), the sealing sleeve (7) is sleeved on the outer side of a valve core (2) and clamped between a valve body (1) and the valve core (2), the sealing sleeve (7) is fixedly arranged in a valve cavity (11), the valve core (2) can rotate relative to the sealing sleeve (7), two liquid passing holes (71) are formed in the sealing sleeve (7), the inner side of the sealing sleeve (7) surrounds the liquid passing holes (71) and are convexly provided with first sealing convex rings (72), the first sealing convex rings (72) are abutted to the valve core (2) and are communicated with the liquid passing holes (71) respectively, the first channel (12) and the second channel (13) are arranged, and when the valve core (2) is located at a communication position, two ports of the communication channel (21) are communicated with the liquid passing holes (71) respectively.
2. The switch valve according to claim 1, characterized in that the outside of the sealing sleeve (7) is provided with a second sealing convex ring (73) around the liquid through hole (71), and the second sealing convex ring (73) abuts against the valve body (1).
3. The switch valve according to claim 1, characterized in that the inner side of the sealing sleeve (7) is further provided with two third sealing convex rings (74), the two third sealing convex rings (74) respectively abut against the valve core (2), and when the valve core (2) is in the off position, the two third sealing convex rings (74) respectively surround the outer sides of the two ports of the communication channel (21).
4. The switch valve according to claim 3, characterized in that two fourth sealing convex rings (75) are further arranged on the outer side of the sealing sleeve (7), and the two fourth sealing convex rings (75) are opposite to the two third sealing convex rings (74) one by one and respectively abut against the valve body (1).
5. A switch valve according to claim 1, characterized in that the outside of the sealing sleeve (7) is further provided with a positioning groove (76), the positioning groove (76) extends through the sealing sleeve (7) in the axial direction, the inner wall of the valve cavity (11) is provided with a rib, and the rib is clamped in the positioning groove (76).
6. Switching valve according to claim 1, characterized in that the sealing sleeve (7) and the valve spool (2) are an interference fit.
7. The switch valve according to claim 1, characterized in that the valve core (2) is of a column type structure and the sealing sleeve (7) is of a cylinder type structure with openings at both ends.
8. Switching valve according to claim 7, characterized in that the axial length of the spool (2) is greater than the axial length of the sealing sleeve (7).
9. Switching valve as in claim 8, characterized in that the two ends of the spool (2) protrude from the two end openings of the sealing sleeve (7).
10. An oil supply system, comprising an oil outlet pipe, an oil return pipe, and the switching valve according to any one of claims 1 to 9, said switching valve being disposed between said oil outlet pipe and said oil return pipe, said first passage (12) communicating with said oil outlet pipe, and said second passage (13) communicating with said oil return pipe.
CN202210141820.7A 2022-02-16 2022-02-16 Switch valve and oil supply system Pending CN114517755A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210141820.7A CN114517755A (en) 2022-02-16 2022-02-16 Switch valve and oil supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210141820.7A CN114517755A (en) 2022-02-16 2022-02-16 Switch valve and oil supply system

Publications (1)

Publication Number Publication Date
CN114517755A true CN114517755A (en) 2022-05-20

Family

ID=81598249

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210141820.7A Pending CN114517755A (en) 2022-02-16 2022-02-16 Switch valve and oil supply system

Country Status (1)

Country Link
CN (1) CN114517755A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806779A (en) * 2015-04-14 2015-07-29 路达(厦门)工业有限公司 Liquid valve assembly and sealing sleeve for liquid valve assembly
US20150316168A1 (en) * 2012-12-11 2015-11-05 Zhejiang Sanhua Co., Ltd. Electronic expansion valve
CN108930811A (en) * 2018-07-27 2018-12-04 宁波宝蒂塑胶阀门有限公司 A kind of strength ball valve
CN109424765A (en) * 2017-08-28 2019-03-05 浙江三花制冷集团有限公司 A kind of rotating type change valve
CN212564465U (en) * 2020-06-18 2021-02-19 温州百德机车部件有限公司 Pressure regulating valve of fuel pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150316168A1 (en) * 2012-12-11 2015-11-05 Zhejiang Sanhua Co., Ltd. Electronic expansion valve
CN104806779A (en) * 2015-04-14 2015-07-29 路达(厦门)工业有限公司 Liquid valve assembly and sealing sleeve for liquid valve assembly
CN109424765A (en) * 2017-08-28 2019-03-05 浙江三花制冷集团有限公司 A kind of rotating type change valve
CN108930811A (en) * 2018-07-27 2018-12-04 宁波宝蒂塑胶阀门有限公司 A kind of strength ball valve
CN212564465U (en) * 2020-06-18 2021-02-19 温州百德机车部件有限公司 Pressure regulating valve of fuel pump

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