CN113738727A - Check valve and braking system - Google Patents
Check valve and braking system Download PDFInfo
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- CN113738727A CN113738727A CN202111074099.6A CN202111074099A CN113738727A CN 113738727 A CN113738727 A CN 113738727A CN 202111074099 A CN202111074099 A CN 202111074099A CN 113738727 A CN113738727 A CN 113738727A
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- 239000013013 elastic material Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a one-way valve and a braking system, and belongs to the technical field of braking systems. The check valve comprises a first valve seat and a first oil duct communicated with the first external oil duct; the elastic valve plate is arranged at the inlet end of the first valve seat; the second valve seat is arranged at the inlet end of the elastic valve plate and comprises a second oil duct communicated with a second external oil duct, and the elastic valve plate is arranged to be opened to enable the second oil duct to be communicated with the first oil duct when the oil pressure of the second oil duct is larger than that of the first oil duct; the second valve seat further comprises a third oil duct arranged on the periphery of the second oil duct, the third oil duct is communicated with the second external oil duct and the second oil duct, the third oil duct comprises a backflow part, and an opening of the backflow part faces an opening of the second oil duct. The invention has the beneficial effects that: the oil speed can be reduced to protect the elastic valve plate.
Description
Technical Field
The invention relates to the technical field of brake systems, in particular to a one-way valve and a brake system.
Background
A check valve is required to be arranged in a braking system, so that oil can only flow from an oil inlet of the check valve to an oil outlet of the check valve in a forward direction, and the reverse flow of the oil can be prevented.
At present, a check valve comprises a valve seat and a valve core, wherein the valve core comprises a blocking cover and an elastic valve plate capable of deforming, and the elastic valve plate is positioned between the blocking cover and the valve seat. The elastic valve plate is arranged between the blocking cover and the valve seat and can deform under the action of pressure on two sides, namely the opening and closing of the one-way valve are completed through the deformation of the elastic valve plate; when the pressure on the valve seat side is greater than the pressure on the retaining cover side, the elastic valve plate leaves the valve seat and is attached to the retaining cover tightly, and the check valve is opened to pass oil; when the side pressure of the blocking cover is larger than that of the valve seat, the elastic valve plate leaves the blocking cover and is tightly attached to the valve seat, and the one-way valve is closed.
However, when the flow rate of the oil on the valve seat side is suddenly increased, the oil directly acts on the elastic valve plate, and the elastic valve plate is subjected to strong impact force of the oil, so that the elastic valve plate is easily damaged.
In view of the above, it is desirable to design a check valve and a brake system to solve the above problems.
Disclosure of Invention
One object of the present invention is to provide a check valve which can reduce the oil speed to protect the elastic valve sheet well.
In order to achieve the purpose, the invention adopts the following technical scheme:
a one-way valve comprising:
the first valve seat comprises a first oil duct communicated with the first external oil duct;
the elastic valve plate is arranged at the inlet end of the first valve seat;
the second valve seat is arranged at the inlet end of the elastic valve plate and comprises a second oil duct communicated with a second external oil duct, and the elastic valve plate is arranged to be opened to enable the second oil duct to be communicated with the first oil duct when the oil pressure of the second oil duct is larger than that of the first oil duct;
the second valve seat further comprises a third oil duct arranged on the periphery of the second oil duct, the third oil duct is communicated with the second external oil duct and the second oil duct, the third oil duct comprises a backflow part, and an opening of the backflow part faces an opening of the second oil duct.
Further, the backflow portion extends along a first direction, and the first direction and the axis of the second oil channel form an included angle.
Further, the oil flowing out of the return portion comprises an axial split in the axial direction of the second oil passage, and the axial split faces the opening of the second oil passage.
Further, the third oil passage is provided around a circumferential direction of the second oil passage.
Further, the flow area of the third oil passage is smaller than the flow area of the second oil passage.
Further, the second valve seat comprises a first sub seat and a second sub seat, the first sub seat is sleeved on the second sub seat, a first channel is formed in the first sub seat, a second channel is formed in the second sub seat, the second channel is communicated with the first channel, and the third oil duct is formed between the inner wall of the first sub seat and the outer wall of the second sub seat.
Further, first branch seat includes the first oil groove along its axial setting, first oil groove with the elastic valve piece corresponds the setting.
Further, the second branch seat comprises a base and a branch boss convexly arranged on the base;
the first sub-seat further comprises a second oil groove, the second oil groove is communicated with the first oil groove, and the second oil groove allows the flow dividing boss to enter;
the second oil groove is sleeved outside the shunting boss, the inner wall of the second oil groove and the outer wall of the shunting boss form the third oil duct.
Further, the base is provided with a diversion hole, and the diversion hole forms an inlet of the third oil duct.
Further, the elastic valve plate comprises a base and an elastic sheet connected to the base, and the base is installed and limited between the first valve seat and the second valve seat; the shell fragment includes stiff end and the free end that can move, the stiff end with the pedestal connection.
Further, the one-way valve also comprises a valve body,
the first valve seat is in threaded connection with the valve body.
Further, the second sub-seat is made of an elastic material.
Further, an operating groove or an operating protrusion is further arranged on the first valve seat.
Another object of the present invention is to provide a braking system including a check valve capable of reducing the speed of oil to better protect a resilient valve plate.
In order to achieve the purpose, the invention adopts the following technical scheme:
a braking system comprising a one-way valve as described above.
The invention has the beneficial effects that:
the invention provides a one-way valve, wherein a first valve seat comprises a first oil duct communicated with a first external oil duct, a second valve seat comprises a second oil duct communicated with a second external oil duct, and when the oil pressure of the second oil duct is greater than that of the first oil duct, an elastic valve plate can elastically deform into the first oil duct so as to open the elastic valve plate to enable the second oil duct to be communicated with the first oil duct; meanwhile, the second valve seat further comprises a third oil duct arranged on the periphery of the second oil duct, the third oil duct is communicated with the second external oil duct and the second oil duct, and an opening of a backflow part of the third oil duct faces an opening of the second oil duct; therefore, one part of oil can flow into the second oil duct through the second external oil duct, the other part of oil flows into the third oil duct through the second external oil duct, and the oil in the second oil duct and the oil in the third oil duct can be mixed again at the backflow part; because the opening of the backflow part faces the opening of the second oil duct, the speed directions of the oil in the second oil duct and the oil in the third oil duct flowing to the backflow part are different, when the oil is mixed again, the oil in the third oil duct with different speed directions can generate flow resistance on the oil in the second oil duct, and the speed of the oil in the second valve seat after being mixed again is reduced; when the oil flow flowing into the second valve seat is suddenly increased, the elastic valve plate cannot be impacted by strong oil, and therefore the elastic valve plate can be well protected.
Drawings
FIG. 1 is a schematic view of a structure of an oil passage formed in a check valve according to the present invention;
FIG. 2 is an exploded schematic view of the check valve provided by the present invention;
FIG. 3 is a schematic structural diagram of the elastic valve sheet provided by the present invention;
FIG. 4 is a schematic structural view of a first valve seat provided by the present invention;
FIG. 5 is a schematic structural view of a first sub-mount provided by the present invention;
fig. 6 is a schematic structural view of a second sub-seat provided by the present invention.
Reference numerals:
10-a first valve seat; 11-a first oil passage; 12-external threads; 13-operating the groove;
20-an elastic valve plate; 21-detour holes; 22-a spring plate; 23-a base;
70-a second valve seat; 30-a first sub-seat; 31-a first oil sump; 32-a second oil groove; 40-a second sub-seat; 41-a second oil passage; 42-a base; 43-a flow-splitting boss; 431-a second channel; 44-a shunt hole;
50-a third oil passage; 60-a valve body; and 61-a support table.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features. Like reference numerals refer to like elements throughout the specification.
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
Generally, a check valve includes a valve seat and a valve core, where the valve core includes a blocking cover and an elastic valve sheet capable of deforming, and the elastic valve sheet is located between the blocking cover and the valve seat. The elastic valve plate is arranged between the blocking cover and the valve seat and can deform under the action of pressure on two sides, namely the opening and closing of the one-way valve are completed through the deformation of the elastic valve plate; when the pressure on the valve seat side is greater than the pressure on the retaining cover side, the elastic valve plate leaves the valve seat and is attached to the retaining cover tightly, and the check valve is opened to pass oil; when the side pressure of the blocking cover is larger than that of the valve seat, the elastic valve plate leaves the blocking cover and is tightly attached to the valve seat, and the one-way valve is closed; however, when the flow of the oil on the valve seat side is suddenly increased, the oil directly acts on the elastic valve plate, so that the elastic valve plate is subjected to strong impact force of the oil, and the elastic valve plate is easily damaged.
In view of the above, as shown in fig. 1, the present embodiment provides a check valve, which includes a first valve seat 10, an elastic valve sheet 20, and a second valve seat 70. Wherein the first valve seat 10 includes a first oil passage 11 communicated with the first external oil passage; the elastic valve plate 20 is arranged at the inlet end of the first valve seat 10; the second valve seat 70 is disposed at the inlet end of the resilient valve plate 20, and the second valve seat 70 includes a second oil passage 41 communicating with the second external oil passage; when the oil pressure of the second oil passage 41 is greater than the oil pressure of the first oil passage 11, the elastic valve sheet 20 is elastically deformed and can move in a direction close to the first oil passage 11, and the second oil passage 41 is communicated with the first oil passage 11.
The second valve seat 70 further includes a third oil passage 50 disposed at the periphery of the second oil passage 41, an inlet of the third oil passage 50 is for communication with a second external oil passage, an outlet of the third oil passage 50 communicates with the second oil passage 41, and the third oil passage 50 includes a return portion, an opening of which is directed toward an opening of the second oil passage 41.
Compared with the prior art, the check valve in the embodiment changes the oil passage arrangement in the second valve seat 70, so that a part of oil can flow into the second oil passage 41 through the second external oil passage, the other part of oil flows into the third oil passage 50 through the second external oil passage, and the oil in the second oil passage 41 and the oil in the third oil passage 50 are mixed again at the backflow part and then flow to the elastic valve plate 20; because the opening of the backflow portion faces the opening of the second oil passage 41, that is, when the oil is re-mixed, the speed direction of the oil when the oil in the third oil passage 50 is mixed into the second oil passage 41 is different from the speed direction of the oil in the second oil passage 41, the oil in the third oil passage 50 generates flow resistance to the oil in the second oil passage 41, so as to reduce the speed of the oil in the second valve seat 70 after re-mixing; when the flow rate of the oil flowing into the second valve seat 70 is suddenly increased, the resilient valve plate 20 is not subjected to a strong impact force of the oil, so that the resilient valve plate 20 can be well protected. In the present embodiment, the second oil passage 41 is a straight oil passage, and the extending direction thereof is parallel to the axial direction of the second valve seat 70; in other embodiments, the second oil passage 41 may be provided in other shapes, such as a zigzag type, a spline curve type, or the like, as required.
Further, the return portion extends in a first direction, and the first direction forms an included angle with the axis of the second oil passage 41; the oil liquid flowing out from the return portion includes an axial split flow along the axial direction of the second oil passage 41, the axial split flow faces the opening of the second oil passage 41, that is, the flowing-out direction of the oil liquid from the outlet of the third oil passage 50 and the direction of the oil liquid flowing through the outlet of the third oil passage 50 in the second oil passage 41 form an included angle α not smaller than 90 °, wherein the included angle α is as shown in fig. 1.
In the present embodiment, an angle formed between the outflow direction of the oil from the outlet of the third oil passage 50 and the direction of the oil flowing through the outlet of the third oil passage 50 in the second oil passage 41 is 135 °. In other embodiments, the angle formed between the outflow direction of the oil from the outlet of the third oil passage 50 and the flow direction of the oil in the second oil passage 41 may be other values greater than 90 °. The flow direction of the oil in the second oil passage 41 is indicated by an arrow a in fig. 1, and the flow direction of the oil in the third oil passage 50 is indicated by an arrow B in fig. 1.
Further, the third oil passage 50 is arranged around the circumferential direction of the second oil passage 41, so that the flow rate of the split oil can be increased, a large flow resistance is generated on the oil in the second oil passage 41, the speed of the oil in the second valve seat 70 after remixing is better reduced, and the condition that the flow rate of the oil in the second valve seat 70 is suddenly increased can be better met, so that the elastic valve plate 20 is better protected. Wherein the shape of the third oil passage 50 is determined according to specific operating conditions.
Specifically, the flow area of the third oil passage 50 is smaller than the flow area of the second oil passage 41, so that the amount of the oil that flows back can be minimized to ensure reliability of the deceleration of the check valve while the velocity of the mixed oil is reduced.
Specifically, as shown in fig. 1-3, the resilient valve sheet 20 includes a base 23 and a resilient sheet 22 connected to the base 23; the base 23 is respectively abutted against the first valve seat 10 and the second valve seat 70, the elastic sheet 22 comprises a fixed end and a movable free end, the fixed end is connected with the base 23, the free end can elastically deform into the first oil duct 11, and the second oil duct 41 is communicated with the first oil duct 11, so that the one-way valve is in an open state; and the free end of the elastic sheet 22 can be attached to the second valve seat 70 and separate the second oil passage 41 from the first oil passage 11, so that the check valve is in a closed state.
Further, as shown in fig. 3, the base 23 surrounds the outer side of the spring plate 22, a substantially U-shaped bypass hole 21 is formed between the base 23 and the spring plate 22, and the bypass hole 21 can divide the elastic valve sheet 20 into the spring plate 22 located inside the bypass hole 21 and the base 23 located outside the bypass hole 21. The elastic valve plate 20 is made of an elastic material, so that the elastic valve plate 20 can automatically reset under the action of elastic force of the elastic valve plate 20 under the condition of no oil liquid driving. In this embodiment, the resilient valve sheet 20 is a reed. In other embodiments, the resilient sheet 20 may be made of other resilient materials.
The one-way valve is in an opening state or a closing state through the oil pressure difference on two sides of the elastic valve plate 20 and the elastic deformation of the elastic valve plate 20; in the whole process, no mechanical action is generated, so that abnormal sound generated by the mechanical action is avoided, and the noise prevention effect of the whole one-way valve is better.
Specifically, when the check valve is in an open state, because the elastic sheet 22 can elastically deform into the first oil duct 11, the base 23 can be abutted to the first valve seat 10 more tightly, so that the elastic valve plate 20 and the first valve seat 10 have better sealing performance, and the problem that oil leaks from the gap between the first valve seat 10 and the elastic valve plate 20 is solved, so that the problem of oil leakage cannot occur.
Further, when the check valve is in a closed state, because the elastic sheet 22 can be attached to the second valve seat 70, the base 23 and the second valve seat 70 are abutted tightly, so that the elastic valve sheet 20 and the second valve seat 70 have good sealing performance, the problem that oil flows out from a gap between the second valve seat 70 and the elastic valve sheet 20 can be avoided, and the problem of oil leakage of the check valve is avoided.
Moreover, the base 23 of the elastic valve sheet 20 is in surface contact with the first valve seat 10 and the second valve seat 70, and the contact area is large, so that high assembly precision is not required between the elastic valve sheet 20 and the first valve seat 10 and the second valve seat 70, and the assembly precision is reduced; and because of the surface contact mode, the flatness requirement among the elastic valve plate 20, the first valve seat 10 and the second valve seat 70 is lower, so that the flatness requirement is reduced, and the assembly difficulty of the one-way valve is reduced.
Meanwhile, the base 23 of the elastic valve sheet 20, the first valve seat 10 and the second valve seat 70 are in surface contact, so that under the same working condition, the contact stress between the elastic valve sheet 20 and the first valve seat 10 and the second valve seat 70 is relatively low, so that the elastic valve sheet 20 and the first valve seat 10 and the second valve seat 70 are not easily abraded, the problem of oil leakage is further avoided, the elastic valve sheet 20 and the first valve seat 10 and the second valve seat 70 can be better protected, and the service life of the one-way valve is prolonged.
Further, as shown in fig. 1, the check valve further includes a valve body 60, an installation space is provided in the valve body 60, a support table 61 is provided at the bottom end of the installation space, the second valve seat 70, the elastic valve sheet 20 and the first valve seat 10 are all disposed in the installation space, and the second valve seat 70 abuts against the support table 61 to support the second valve seat 70.
Wherein the first valve seat 10 and the valve body 60 are in threaded connection; through in the installation space with first valve seat 10 threaded connection to valve body 60 to make first valve seat 10 have the tightening moment, thereby can assemble first valve seat 10 and second valve seat 70 respectively with the upper surface and the lower surface of elastic valve piece 20, so that the assembly effect is better, and easy operation is convenient, and assembly cost is lower. Specifically, an external thread 12 is formed on the outer side of the first valve seat 10, an internal thread matching the external thread 12 is formed in the installation space, and the external thread 12 and the internal thread can be screwed.
Further, as shown in fig. 4, an operation groove 13 is further disposed on the first valve seat 10, so that the first valve seat 10 can be rotated by applying a force to the operation groove 13, and the first valve seat 10 can be screwed into the mounting hole, thereby facilitating operation and saving time and labor. In this embodiment, the operation recess 13 is in a straight shape for cooperating with a straight screwdriver, and in other embodiments, the operation recess 13 may be provided in a plurality of modifications, such as regular hexagon, for cooperating with a hexagonal wrench.
As an alternative thereto, the operating recess 13 may instead be an operating projection, which may be a regular polygon for cooperation with a socket wrench.
Specifically, as shown in fig. 1, 2, 5, and 6, the second valve seat 70 includes a first sub-seat 30 and a second sub-seat 40. The first sub-seat 30 is sleeved on the second sub-seat 40, a first channel is formed in the first sub-seat 30, a second channel 431 is formed in the second sub-seat 40, the first channel is communicated with the second channel 431, and a third oil channel 50 is formed between the inner wall of the first sub-seat 30 and the outer wall of the second sub-seat 40.
The first sub-seat 30 comprises a first oil groove 31 and a second oil groove 32 which are sequentially arranged along the axial direction of the first sub-seat, the first oil groove 31 is communicated with the second oil groove 32 to form a first channel, and the first oil groove 31 is correspondingly arranged close to the elastic valve sheet 20 relative to the second oil groove 32; the second sub-seat 40 comprises a base 42 and a flow dividing boss 43 convexly arranged on the base 42, the base 42 is arranged on one side of the first sub-seat 30 far away from the elastic valve sheet 20, the flow dividing boss 43 is allowed to enter the second oil groove 32, the second oil groove 32 is sleeved outside the flow dividing boss 43, and a main body of a third oil channel is formed between the inner wall of the second oil groove 32 and the outer wall of the flow dividing boss 43; a flow dividing hole 44 is formed in the base 42, and the flow dividing hole 44 forms an inlet of the third oil passage; the top surface of the flow dividing boss 43 is in clearance fit with the bottom wall of the second oil groove 32 and forms an outlet of the third oil passage; the inlet of the third oil passage, the main body of the third oil passage, and the outlet of the third oil passage constitute a third oil passage 50; and the second passage 431 is provided on the flow dividing boss 43, the second passage 431 communicates with the first oil groove 31 and forms the second oil passage 41. In this embodiment, the diversion holes 44 are fan-shaped. In other embodiments, diverter holes 44 may be shaped in other shapes.
Wherein, the second divides seat 40 to be made by elastic material, because elastic material has the high and deformable characteristics of cementing intensity, makes the second divide seat 40 to have sealing function to can guarantee the leakproofness of the junction between second branch seat 40 and the first branch seat 30, avoid appearing the oil leak. In this embodiment, the second sub-base 40 is made of any one of rubber and nylon. In other embodiments, the second sub-mount 40 may be made of other elastic materials.
The specific opening and closing process of the check valve in this embodiment is as follows:
opening process of the check valve: when the oil in the valve body 60 enters the second oil passage 41 and the third oil passage 50 through the second external oil passage respectively; since the oil in the third oil passage 50 and the oil in the second oil passage 41 flow in different directions at the backflow portion, the speed of the oil after re-mixing can be reduced.
Then, the mixed oil in the second oil passage 41 flows to the elastic valve plate 20, and the oil can drive the free end of the elastic sheet 22 of the elastic valve plate 20 to elastically deform into the first oil passage 11, so that the second oil passage 41 is communicated with the first oil passage 11, and the check valve is opened.
Closing process of the one-way valve: when the oil in the valve body 60 flows into the first oil passage 11 through the first external oil passage, the oil in the first oil passage 11 flows to the resilient valve plate 20, and the oil can drive the free end of the resilient piece 22 of the resilient valve plate 20 to elastically deform into the second oil passage 41, so that the resilient piece 22 is attached to the first sub-seat 30 to separate the second oil passage 41 from the first oil passage 11, so that the check valve is in a closed state.
The embodiment also provides a braking system which comprises the one-way valve.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (14)
1. A one-way valve comprising:
a first valve seat (10) including a first oil passage (11) communicating with the first external oil passage;
the elastic valve plate (20) is arranged at the inlet end of the first valve seat (10);
the second valve seat (70) is arranged at the inlet end of the elastic valve plate (20) and comprises a second oil channel (41) communicated with a second external oil channel, and the elastic valve plate (20) is arranged to be opened to enable the second oil channel (41) to be communicated with the first oil channel (11) when the oil pressure of the second oil channel (41) is larger than that of the first oil channel (11);
it is characterized in that the preparation method is characterized in that,
the second valve seat (70) further comprises a third oil channel (50) arranged on the periphery of the second oil channel (41), the third oil channel (50) is communicated with the second external oil channel and the second oil channel (41), the third oil channel (50) comprises a backflow part, and an opening of the backflow part faces an opening of the second oil channel (41).
2. A non-return valve according to claim 1, characterised in that the return portion extends in a first direction which is arranged at an angle to the axis of the second oil channel (41).
3. The non-return valve according to claim 1, characterized in that the oil flowing out through the return portion comprises an axial split in the direction of the axis of the second oil channel (41), which is directed towards the opening of the second oil channel (41).
4. The check valve according to any one of claims 1 to 3, characterized in that the third oil passage (50) is provided around a circumferential direction of the second oil passage (41).
5. The check valve as recited in claim 2, characterized in that the flow area of the third oil passage (50) is smaller than the flow area of the second oil passage (41).
6. The check valve according to any one of claims 1 to 3, wherein the second valve seat (70) includes a first sub-seat (30) and a second sub-seat (40), the first sub-seat (30) is fitted over the second sub-seat (40), a first passage is formed in the first sub-seat (30), a second passage (431) is formed in the second sub-seat (40), the second passage (431) communicates with the first passage, and the third oil passage (50) is formed between an inner wall of the first sub-seat (30) and an outer wall of the second sub-seat (40).
7. The check valve according to claim 6, wherein the first sub-seat (30) comprises a first oil groove (31) arranged along an axial direction thereof, and the first oil groove (31) is arranged corresponding to the resilient valve sheet (20).
8. The check valve as recited in claim 7, wherein the second sub-seat (40) includes a base (42) and a flow-dividing projection (43) protruding from the base (42);
the first sub-seat (30) further comprises a second oil groove (32), the second oil groove (32) is communicated with the first oil groove (31), and the second oil groove (32) allows the flow dividing boss (43) to enter;
the second oil groove (32) is sleeved outside the shunting boss (43) and the inner wall of the second oil groove (32) and the outer wall of the shunting boss (43) form the third oil duct (50).
9. The check valve as recited in claim 8, characterized in that the base (42) is provided with a flow dividing hole (44), the flow dividing hole (44) constituting an inlet of the third oil passage (50).
10. The check valve according to claim 1, characterized in that the resilient valve plate (20) comprises a base (23) and a resilient tab (22) connected to the base (23), the base (23) being mounted and confined between the first valve seat (10) and the second valve seat (70); the elastic sheet (22) comprises a fixed end and a movable free end, and the fixed end is connected with the base (23).
11. The non-return valve according to claim 1, characterized in that it further comprises a valve body (60), said first valve seat (10) being screwed to said valve body (60).
12. Non-return valve according to claim 6, characterised in that the second sub-seat (40) is made of an elastic material.
13. Non-return valve according to claim 1, characterised in that the first valve seat (10) is also provided with an operating recess (13) or an operating projection.
14. A braking system comprising a one-way valve as claimed in any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111074099.6A CN113738727A (en) | 2021-09-14 | 2021-09-14 | Check valve and braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111074099.6A CN113738727A (en) | 2021-09-14 | 2021-09-14 | Check valve and braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113738727A true CN113738727A (en) | 2021-12-03 |
Family
ID=78738646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111074099.6A Pending CN113738727A (en) | 2021-09-14 | 2021-09-14 | Check valve and braking system |
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| Country | Link |
|---|---|
| CN (1) | CN113738727A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120313024A1 (en) * | 2011-06-11 | 2012-12-13 | Robert Asher Eiermann | Compact reed valve |
| CN205260933U (en) * | 2015-11-27 | 2016-05-25 | 珠海格力电器股份有限公司 | Check valve |
| CN112161141A (en) * | 2020-10-09 | 2021-01-01 | 林翔 | Electromagnetic valve pipeline for reducing water hammer effect |
| CN112212066A (en) * | 2020-10-09 | 2021-01-12 | 陈科 | Speed-reducing water valve |
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2021
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120313024A1 (en) * | 2011-06-11 | 2012-12-13 | Robert Asher Eiermann | Compact reed valve |
| CN205260933U (en) * | 2015-11-27 | 2016-05-25 | 珠海格力电器股份有限公司 | Check valve |
| CN112161141A (en) * | 2020-10-09 | 2021-01-01 | 林翔 | Electromagnetic valve pipeline for reducing water hammer effect |
| CN112212066A (en) * | 2020-10-09 | 2021-01-12 | 陈科 | Speed-reducing water valve |
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