CN115823295A - Check valve with split type valve block subassembly - Google Patents
Check valve with split type valve block subassembly Download PDFInfo
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- CN115823295A CN115823295A CN202211177555.4A CN202211177555A CN115823295A CN 115823295 A CN115823295 A CN 115823295A CN 202211177555 A CN202211177555 A CN 202211177555A CN 115823295 A CN115823295 A CN 115823295A
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- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 15
- 230000029058 respiratory gaseous exchange Effects 0.000 description 11
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- 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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- Check Valves (AREA)
Abstract
A check valve with a split type valve plate assembly is characterized in that the split type valve plate assembly can be independently manufactured with a valve plate assembly fixing device, and the split type valve plate assembly and the valve plate assembly fixing device can be efficiently and reliably assembled to form the split type valve plate assembly. The bottom of the valve seat of the one-way valve is provided with an outlet counter bore, the inside of the valve seat is provided with a flow passing hole, the top of the valve seat is provided with an inlet counter bore, the axis of the valve seat is provided with a through hole, the hole wall of the outlet counter bore of the valve seat is provided with a transverse hole, a valve sheet on a valve sheet assembly is integrated with a fixed column, the valve sheet assembly is installed in the center hole of the valve seat, the head of a rivet rod of the rivet penetrates through the axis through hole of the valve sheet assembly and the axis through hole of the valve seat, the head of the rivet rod of the rivet is outwards flanged and pressed on the bottom surface of the inlet counter bore of the valve seat, when the outlet side pressure is greater than the inlet side pressure, the valve sheet is tightly pressed on the top surface of a sealing boss of the valve seat to close the valve, and when the outlet side pressure of the valve is smaller than the inlet side pressure, the valve sheet is deformed and leaves the sealing boss of the valve seat to open the valve.
Description
Technical Field
The invention relates to a one-way valve with a split valve plate assembly, in particular to a one-way valve applied to a breathing system of an engine crankcase.
Background
The crankcase breathing system of the engine leads oil vapor in the crankcase into the engine combustion chamber from the engine air inlet channel to be burnt, so that the oil vapor in the crankcase is prevented from overflowing to pollute the environment. The oil-gas separator of the traditional engine crankcase breathing system can not thoroughly filter oil particles, the oil particles in the oil-gas can be gathered into oil liquid in the breathing pipe to flow into an engine combustion chamber, so that engine lubricating oil is not well combusted, pollutant waste gas is generated, the environment-friendly emission performance of an engine is deteriorated, and therefore the oil liquid in the breathing pipe needs to be led back to the crankcase of the engine. While high engine speed causes the pressure inside the crankcase to change rapidly and sometimes more than the pressure outside the crankcase and sometimes less than the pressure outside the crankcase. Therefore, a check valve with a simple assembly structure is needed to control the oil in the breathing pipe to flow back to the crankcase in a one-way mode, so that the oil and steam in the crankcase are prevented from overflowing, and automatic opening and closing are realized. Meanwhile, when the one-way valve needs to be replaced, the requirement that the one-way valve can be conveniently detached is met.
Disclosure of Invention
In view of the foregoing, the present invention is directed to providing a check valve having a split type valve plate assembly that is simple in assembly structure and can be automatically opened and closed.
The invention discloses a one-way valve with a split type valve plate assembly, which is characterized in that:
the one-way valve comprises a valve seat and a split valve plate component,
an inlet counter bore is formed in the top of the valve seat, an outlet counter bore is formed in the bottom of the valve seat, and a sealing boss is arranged on the bottom surface of the outlet counter bore;
the split valve plate assembly comprises a valve plate assembly and a valve plate assembly fixing device;
wherein the content of the first and second substances,
the valve plate assembly comprises a valve plate, a fixed column arranged at the axis of the valve plate assembly and a fixed column through hole arranged at the axis of the fixed column, and the valve plate and the fixed column are of an integrated structure;
when the pressure at the outlet side of the one-way valve is larger than the pressure at the inlet side, the force generated by the pressure difference at the two sides tightly presses the top surface of the sealing boss through the valve plate in the split valve plate assembly to realize the closing of the one-way valve and prevent the oil gas in the crankcase of the engine from overflowing,
when the pressure at the outlet side of the check valve is smaller than that at the inlet side, the force generated by the pressure difference at the two sides leaves the top surface of the sealing boss through the valve plate in the split type valve plate assembly to realize the opening of the check valve and realize the backflow of oil outside the crankcase into the crankcase;
the engine runs at high speed to enable the pressure in the crankcase to change rapidly between positive pressure and negative pressure, and the force and the direction of the force acting on the split type valve plate assembly generated by the pressure difference between the two sides of the check valve change along with the pressure change in the crankcase, so that the opening and closing of the check valve are controlled automatically.
Preferably the inner portion is provided with an overflow aperture.
Preferably, the first and second liquid crystal materials are,
the valve seat through hole is formed in the axis of the bottom face of the inlet counter bore, and the center of the bottom face of the outlet counter bore is provided with the center counter bore communicated with the valve seat through hole.
Preferably, the first and second liquid crystal materials are,
and a fixing column through hole chamfer is arranged at the rear end of the fixing column through hole, and the fixing column is arranged in the central counter bore.
Preferably, the first and second liquid crystal materials are,
the valve plate component fixing device is a rivet;
the top surface of the fixing column is abutted against the bottom surface of the central counter bore, and the head of a rivet rod of the rivet penetrates through the fixing column through hole and the valve seat through hole and then extends into the inlet counter bore.
Preferably, the first and second liquid crystal materials are,
the section thickness of valve block is the bodiness gradually by the outer fringe of valve block to the center.
Preferably, the first and second liquid crystal materials are,
the rivet is provided with a countersunk conical surface which is tightly pressed on a fixed column through hole chamfer at the rear end of the fixed column through hole.
Preferably, the first and second liquid crystal materials are,
the rivet rod head of the rivet is flanged outwards, and the bottom surface of the flanged rivet rod head is pressed on the bottom surface of the inlet counter bore.
In a preferred embodiment of the method of the invention,
and a transverse hole is formed in the hole wall of the outlet counter bore.
Preferably, the first and second liquid crystal materials are,
and a convex ring is arranged on the outer circle surface of the valve seat.
The invention has the following advantages:
the invention aims at the crankcase to be provided with the one-way valve with the split type valve plate assembly, and the closing of the one-way valve is realized by matching the split type valve plate assembly and the valve seat by utilizing the rapid change of the pressure in the crankcase between positive pressure and negative pressure when the engine runs at high speed. Therefore, on one hand, oil leakage of the engine is prevented, on the other hand, the over-high pressure of the crankcase is avoided, the service life of the engine oil is prolonged, and the abrasion and corrosion of parts are reduced. In addition, the check valve with the split type valve plate assembly is simple in structure, reliable in assembly, high in operation efficiency, better in working reliability and sensitivity and convenient to detach.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a sectional view of a check valve with a split valve plate assembly according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an open state of a check valve with a split valve plate assembly according to an embodiment of the present invention;
FIG. 3 is a sectional view of a split valve plate assembly according to an embodiment of the invention;
FIG. 4 is a 3D schematic view of a check valve with a split valve plate assembly according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", "parallel", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or the elements that are referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, the present invention should not be construed as being limited.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are only used to distinguish one description from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The invention is further described below with reference to the accompanying drawings:
in one embodiment of the present invention,
the invention discloses a one-way valve with a split type valve plate assembly, which is characterized in that:
the one-way valve comprises a valve seat (1) and a split type valve plate assembly;
when the pressure at the outlet side of the one-way valve is larger than that at the inlet side, the force generated by the pressure difference at the two sides realizes the closing of the one-way valve through the split valve plate assembly, and prevents the oil vapor in the crankcase of the engine from overflowing;
when the pressure at the outlet side of the one-way valve is smaller than the pressure at the inlet side, the force generated by the pressure difference at the two sides realizes the opening of the one-way valve through the split valve plate assembly, and the oil outside the crankcase flows back into the crankcase;
the engine runs at high speed to enable the pressure in the crankcase to change rapidly between positive pressure and negative pressure, and the force and the direction of the force acting on the split type valve plate assembly generated by the pressure difference between the two sides of the check valve change along with the pressure change in the crankcase, so that the opening and closing of the check valve are controlled automatically.
Through the embodiment, the one-way valve with the split type valve plate assembly realizes the closing of the one-way valve through the matching of the split type valve plate assembly and the valve seat by utilizing the rapid change of the pressure in the crankcase between positive pressure and negative pressure when the engine runs at high speed. Not only can reduce the engine oil leak, can also avoid the crankcase pressure too high, prolong machine oil life, reduce part wearing and tearing and corruption.
In a further preferred embodiment of the method,
an overflowing hole (1-4) is arranged in the valve seat (1).
In a further preferred embodiment of the method,
the bottom surface axle center of the inlet counter bore (1-5) is provided with a valve seat through hole (1-6), and the bottom surface center of the outlet counter bore (1-1) is provided with a central counter bore (1-7) communicated with the valve seat through hole (1-6).
In a further preferred embodiment of the method,
a fixing column through hole chamfer (2-4) is arranged at the rear end of the fixing column through hole (2-3), and the fixing column (2-2) is arranged in the central counter bore (1-7).
In a further preferred embodiment of the method,
the valve plate component fixing device is a rivet (3);
the top surface of the fixed column (2-2) is abutted against the bottom surface of the central counter bore (1-7), and the head of the rivet rod of the rivet (3) penetrates through the fixed column through hole (2-3) and the valve seat through hole (1-6) and then extends into the inlet counter bore (1-5).
In a further preferred embodiment of the method,
the section thickness of the valve plate (2-1) is gradually increased from the outer edge of the valve plate (2-1) to the center.
In a further preferred embodiment of the method,
the rivet (3) is provided with a countersunk conical surface which is tightly pressed on a fixed column through hole chamfer (2-4) at the rear end of the fixed column through hole (2-3).
In a further preferred embodiment of the method,
the head of the rivet rod of the rivet (3) is flanged outwards, and the bottom surface of the flanged head of the rivet rod is pressed on the bottom surface of the inlet counter bore (1-5).
In a further preferred embodiment of the method,
the hole wall of the outlet counter bore (1-1) is provided with a transverse hole (1-8).
In a further preferred embodiment of the method,
the outer circle surface of the valve seat (1) is provided with a convex ring (1-3).
In a further preferred embodiment of the method,
the invention discloses a one-way valve with an integrated valve plate component, which is characterized in that:
the one-way valve comprises a valve seat (1) and a split valve plate component,
an inlet counter bore (1-5) is arranged at the top of the valve seat (1), an outlet counter bore (1-1) is arranged at the bottom of the valve seat, and a sealing boss (1-2) is arranged on the bottom surface of the outlet counter bore (1-1);
the split valve plate assembly comprises a valve plate assembly (2) and a valve plate assembly fixing device;
wherein the content of the first and second substances,
the valve plate assembly (2) comprises a valve plate (2-1), a fixing column (2-2) arranged at the axis of the valve plate assembly (2) and a fixing column through hole (2-3) arranged at the axis of the fixing column (2-2), and the valve plate (2-1) and the fixing column (2-2) are of an integrated structure;
when the pressure at the outlet side of the one-way valve is larger than that at the inlet side, the force generated by the pressure difference at the two sides is tightly pressed on the top surface of the sealing boss (1-2) through the valve plate (2-1) in the split valve plate assembly to realize the closing of the one-way valve and prevent the oil vapor in the crankcase of the engine from overflowing,
when the pressure at the outlet side of the check valve is smaller than that at the inlet side, the force generated by the pressure difference at the two sides is separated from the top surface of the sealing boss (1-2) through the valve plate (2-1) in the split valve plate assembly to realize the opening of the check valve, so that the oil outside the crankcase flows back into the crankcase;
the engine runs at high speed to enable the pressure in the crankcase to change rapidly between positive pressure and negative pressure, and the force and the direction of the force acting on the split type valve plate assembly generated by the pressure difference between the two sides of the check valve change along with the pressure change in the crankcase, so that the opening and closing of the check valve are controlled automatically.
It can be appreciated that for the above described embodiment, the key is: the valve plate assembly (2) consists of a valve plate (2), a fixed column (2-2) arranged at the axis of the valve plate assembly (2) and a fixed column through hole (2-3) arranged at the axis of the fixed column (2-2), and the valve plate assembly (2) and a valve plate assembly fixing device form a split type valve plate assembly. The valve plate assembly and the valve plate assembly fixing device can be manufactured independently, the manufacturing process is simplified, the assembling structure is simple, and the high operation efficiency is achieved. On the basis, the check valve controls the oil liquid in the breathing pipe to flow back to the crankcase in a one-way mode, so that the oil vapor in the crankcase is prevented from overflowing, and automatic opening and closing are achieved. The split valve plate assembly provided by the invention just refers to the following components: the valve plate assembly and the valve plate assembly fixing device can be manufactured independently, and the valve plate assembly fixing device can be assembled efficiently and reliably to form a split type valve plate assembly.
So far, the working principle of the check valve of the invention can be understood:
when the pressure at the outlet side of the one-way valve is larger than the pressure at the inlet side, the force generated by the pressure difference at the two sides of the valve plate (2-1) tightly presses the valve plate (2-1) on the top surface of the sealing boss (1-2) of the valve seat (1) to close the one-way valve and prevent oil and gas in an engine crankcase from overflowing.
When the pressure of the outlet side of the check valve is smaller than that of the inlet side, the valve plate (2-1) is pressed and deformed by the force generated by the pressure difference and then departs from the top surface of a sealing boss (1-2) of the valve seat (1) to open the check valve, an inlet counter bore (1-5) is communicated with a breathing pipeline outside an engine crankcase, oil in the inlet counter bore (1-5) flows into the engine crankcase from an opening opened by the valve plate (2-1) and the outlet counter bore (1-1) under the action of the pressure difference, the oil outside the crankcase flows back into the crankcase, the pressure in the crankcase is rapidly changed between positive pressure and negative pressure due to high-speed operation of the engine, the magnitude of the force acting on the valve plate (2-1) and the direction of the force generated by the pressure difference of the two sides of the valve plate (2-1) are changed along with the pressure change in the crankcase, and therefore the opening and closing of the valve plate (2-1) are automatically controlled.
In a further preferred embodiment of the method,
referring to fig. 1, a flow passing hole (1-4) is arranged in a valve seat (1), a valve seat through hole (1-6) is arranged at the bottom surface axis of an inlet counter bore (1-5), and a central counter bore (1-7) communicated with the valve seat through hole (1-6) is arranged at the bottom surface center of an outlet counter bore (1-1). When the check valve is opened, the inlet counter bore (1-5) is communicated with a breathing pipeline outside the crankcase of the engine, oil in the inlet counter bore (1-5) flows into the crankcase of the engine from the opening opened by the valve sheet (2-1), the overflowing hole (1-4) and the outlet counter bore (1-1) under the action of differential pressure, and the oil outside the crankcase flows back into the crankcase.
In a further preferred embodiment of the method,
referring to the attached drawings 1-2, a convex ring (1-3) is arranged on the outer circle surface of a valve seat (1), and the outer circle convex ring (1-3) is tightly matched with a mounting hole after a one-way valve is arranged in the mounting hole of the one-way valve so as to block the space on two sides of an inlet and an outlet outside the one-way valve. A fixing column through hole chamfer (2-4) is arranged at the rear end of the fixing column through hole (2-3), and the fixing column (2-2) is arranged in the central counter bore (1-7). The valve plate component fixing device is a rivet (3); the top surface of the fixed column (2-2) is abutted against the bottom surface of the central counter bore (1-7), and the head of the rivet rod of the rivet (3) penetrates through the fixed column through hole (2-3) and the valve seat through hole (1-6) and then extends into the inlet counter bore (1-5). The rivet (3) is provided with a countersunk conical surface which is tightly pressed on a fixed column through hole chamfer (2-4) at the rear end of the fixed column through hole (2-3). The head of the rivet rod of the rivet (3) is flanged outwards, and the bottom surface of the flanged head of the rivet rod is pressed on the bottom surface of the inlet counter bore (1-5).
When the pressure of the outlet side is larger than that of the inlet side, the force generated by the pressure difference of the two sides of the valve plate (2-1) tightly presses the valve plate (2-1) on the top surface of the sealing boss (1-2) to close the check valve and prevent oil vapor in an engine crankcase from overflowing, when the pressure of the outlet side of the check valve is smaller than that of the inlet side, the force generated by the pressure difference presses the valve plate (2-1) to deform and then generates an overflowing gap delta with the top surface of the sealing boss (1-2) to open the check valve, the inlet counter bore (1-5) is communicated with a breathing pipeline outside the engine crankcase, oil in the inlet counter bore (1-5) of the valve seat (1) flows into the engine crankcase from the overflowing hole (1-4) of the valve seat (1), the opening opened by the valve plate (2-1) and the outlet counter bore (1-1) under the action of the pressure difference, the high-speed operation of the engine enables the pressure in the crankcase to change rapidly, and the force acting on the valve plate (2-1) and the direction of the crankcase changes along with the pressure change, thereby automatically controlling the opening and closing of the valve plate (2-1).
In a further preferred embodiment of the method,
referring to the attached drawings 1-3, the section thickness of the valve plate (2-1) is gradually increased from the outer edge of the valve plate (2-1) to the center, and a transverse hole (1-8) is formed in the hole wall of the outlet counter bore (1-1).
The thickness of the section of the valve plate (2-1) is gradually thickened from the outer edge of the valve plate (2-1) to the center, so that the section of the valve plate (2-1) has enough structural strength when the valve plate (2-1) elastically deforms at the outer edge to open the check valve, and the working reliability of the valve plate (2-1) is ensured. Meanwhile, when the one-way valve needs to be replaced, the hook of the caliper is buckled into the transverse hole (1-8) on the hole wall of the outlet counter bore (1-1) and pulled outwards, and the one-way valve can be conveniently detached from the mounting hole.
It should be noted that fig. 4 is a 3D schematic diagram of a check valve according to an embodiment of the present invention, which can be mutually referred to in conjunction with other figures.
In a further preferred embodiment of the method,
the check valve comprises a valve seat (1), a valve sheet assembly (2) and a rivet (3), wherein an outlet counter bore (1-1) is formed in the bottom of the valve seat (1), a sealing boss (1-2) is arranged on the bottom surface of the outlet counter bore (1-1) of the valve seat (1), a convex ring (1-3) is arranged on the outer circle surface of the valve seat (1), a overflowing hole (1-4) is formed in the valve seat (1), an inlet counter bore (1-5) is formed in the top of the valve seat (1), a through hole (1-6) is formed in the bottom surface axle center of the inlet counter bore (1-5) of the valve seat (1), a counter bore (1-7) communicated with the through hole (1-6) in the axle center is formed in the bottom surface center of the outlet counter bore (1-1) of the valve seat (1), a transverse hole (1-8) is formed in the hole wall of the outlet counter bore (1-1) of the valve seat (1), a fixing column (2-2) is arranged in the axle center of the valve sheet assembly (2), the valve sheet (2-1) and the valve sheet (2-2) are integrated with the fixing column (2), the valve sheet (2-2), and the valve sheet (2-2) are arranged in the fixing column (2-2), and the valve sheet assembly (2-2) is provided with the through hole (3) ) The rear end of the valve plate component is provided with a chamfer (2-4), a valve plate fixing column (2-2) of the valve plate component (2) is arranged in a central counter bore (1-7) at the bottom of the valve seat (1), the top surface of the valve plate fixing column (2-2) of the valve plate component (2) is abutted against the bottom surface of the central counter bore (1-7) at the bottom of the valve seat (1), the section thickness of the valve plate (2-1) on the valve plate component (2) is gradually thickened from the outer edge to the center of the valve plate (2-1), so that the section stress load of the valve plate (2-1) is in a uniform distribution state, and the working reliability of the valve plate (2-1) is ensured, the head of a rivet rod of the rivet (3) penetrates through an axle center through hole (2-3) of a valve plate fixing column (2-2) of the valve plate assembly (2) and an axle center through hole (1-6) of a valve seat (1) and then extends into an inlet counter bore (1-5) of the valve seat (1), the conical surface of a counter bore of the rivet (3) is tightly pressed on a chamfer (2-4) at the rear end of the axle center through hole (2-3) of the valve plate fixing column (2-2) of the valve plate assembly (2), the head of the rivet rod of the rivet (3) is flanged outwards, the bottom surface of the flange of the head of the rivet rod of the rivet (3) is pressed on the bottom surface of the inlet counter bore (1-5) of the valve seat (1), when the pressure at the outlet side is larger than the pressure at the inlet side, the force generated by the pressure difference at the two sides of the valve plate (2-1) presses the valve plate (2-1) tightly on the top surface of a sealing boss (1-2) of the valve seat (1) to close the check valve, so that oil vapor in an engine crankcase is prevented from overflowing, when the pressure at the outlet side of the check valve is smaller than the pressure at the inlet side, the force generated by the pressure difference presses and deforms the valve plate (2-1) and leaves the top surface of the sealing boss (1-2) of the valve seat (1) to open the check valve, the inlet counter bore (1-5) of the valve seat (1) is communicated with a breathing pipe outside the engine crankcase, oil in the inlet counter bore (1-5) of the valve seat (1) flows through a flow hole (1-4) from the valve seat (1), the opening of the valve plate (2-1) is opened by the pressure difference, the bottom outlet counter bore (1-1) of the valve seat (1) flows into the flow hole of the engine crankcase, so that the opening of the valve plate (2-1) and the pressure difference between the crankcase is controlled by the pressure of the pressure in the crankcase, so that the pressure in the crankcase and the pressure in the crankcase are changed, in addition, when the check valve needs to be replaced, the hook of the caliper is buckled into the transverse hole (1-8) on the hole wall of the counter bore (1-1) at the outlet of the valve seat (1) and is pulled outwards, so that the check valve can be conveniently detached from the mounting hole.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a check valve with split type valve block subassembly which characterized in that:
the one-way valve comprises a valve seat (1) and a split type valve plate component,
an inlet counter bore (1-5) is formed in the top of the valve seat (1), an outlet counter bore (1-1) is formed in the bottom of the valve seat, and a sealing boss (1-2) is arranged on the bottom surface of the outlet counter bore (1-1);
the split valve plate assembly comprises a valve plate assembly (2) and a valve plate assembly fixing device;
wherein the content of the first and second substances,
the valve plate assembly (2) comprises a valve plate (2-1), a fixing column (2-2) arranged at the axis of the valve plate assembly (2) and a fixing column through hole (2-3) arranged at the axis of the fixing column (2-2), and the valve plate (2-1) and the fixing column (2-2) are of an integrated structure;
when the pressure at the outlet side of the one-way valve is larger than that at the inlet side, the force generated by the pressure difference at the two sides is tightly pressed on the top surface of the sealing boss (1-2) through the valve plate (2-1) in the split valve plate assembly to realize the closing of the one-way valve and prevent the oil vapor in the crankcase of the engine from overflowing,
when the pressure at the outlet side of the check valve is smaller than that at the inlet side, the force generated by the pressure difference at the two sides is separated from the top surface of the sealing boss (1-2) through the valve plate (2-1) in the split valve plate assembly to realize the opening of the check valve, so that the oil outside the crankcase flows back into the crankcase;
the engine runs at high speed to enable the pressure in the crankcase to change rapidly between positive pressure and negative pressure, and the force and the direction of the force acting on the split type valve plate assembly generated by the pressure difference between the two sides of the check valve change along with the pressure change in the crankcase, so that the opening and closing of the check valve are controlled automatically.
2. A check valve with a split valve sheet assembly as claimed in claim 1, wherein preferably:
and an overflowing hole (1-4) is arranged in the valve seat (1).
3. The check valve with split valve plate assembly of claim 2, wherein:
the valve seat through hole (1-6) is formed in the axis of the bottom face of the inlet counter bore (1-5), and the center counter bore (1-7) communicated with the valve seat through hole (1-6) is formed in the center of the bottom face of the outlet counter bore (1-1).
4. The check valve with split valve plate assembly of claim 3, wherein:
a fixing column through hole chamfer (2-4) is arranged at the rear end of the fixing column through hole (2-3), and the fixing column (2-2) is arranged in the central counter bore (1-7).
5. The check valve with split valve plate assembly of claim 3, wherein:
the valve plate component fixing device is a rivet (3);
the top surface of the fixing column (2-2) is abutted against the bottom surface of the central counter bore (1-7), and the head of the rivet rod of the rivet (3) penetrates through the fixing column through hole (2-3) and the valve seat through hole (1-6) and then extends into the inlet counter bore (1-5).
6. The check valve with split valve plate assembly of claim 2, wherein:
the thickness of the section of the valve plate (2-1) is gradually increased from the outer edge of the valve plate (2-1) to the center.
7. The check valve with split valve plate assembly of claim 5, wherein:
the rivet (3) is provided with a countersunk conical surface which is tightly pressed on a fixed column through hole chamfer (2-4) at the rear end of the fixed column through hole (2-3).
8. The check valve with split valve plate assembly of claim 5, wherein:
the head of the rivet rod of the rivet (3) is flanged outwards, and the bottom surface of the flanged head of the rivet rod is pressed on the bottom surface of the inlet counter bore (1-5).
9. The check valve with split valve plate assembly of claim 1, wherein:
the hole wall of the outlet counter bore (1-1) is provided with a transverse hole (1-8).
10. The check valve with the split valve sheet assembly of claim 9, wherein:
the outer circle surface of the valve seat (1) is provided with a convex ring (1-3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021111485114 | 2021-09-28 | ||
| CN202111148511 | 2021-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115823295A true CN115823295A (en) | 2023-03-21 |
Family
ID=85523971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211177555.4A Pending CN115823295A (en) | 2021-09-28 | 2022-09-26 | Check valve with split type valve block subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115823295A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451316A (en) * | 2022-08-25 | 2022-12-09 | 常熟骏驰科技有限公司 | Metal diaphragm type oil return valve |
-
2022
- 2022-09-26 CN CN202211177555.4A patent/CN115823295A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451316A (en) * | 2022-08-25 | 2022-12-09 | 常熟骏驰科技有限公司 | Metal diaphragm type oil return valve |
| CN115451316B (en) * | 2022-08-25 | 2023-11-21 | 常熟骏驰科技有限公司 | Metal diaphragm type oil return valve |
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