One-way valve, one-way communicating pipe, oil tank assembly and tractor

Abstract

The one-way valve comprises a shell sleeve, a sealing ring and a valve plate, the shell sleeve is an annular piece, the side wall of the shell sleeve is provided with an arc-strip-shaped installation hole in the annular direction, the two ends of the sealing ring are the positive end and the negative end respectively, and the valve plate is arranged in the shell sleeve. The sealing ring is embedded in the positive end of the shell sleeve, two hanging lugs are arranged on the edge of the valve block, the valve block is arranged in the shell sleeve, the two hanging lugs are hung at the two ends of the mounting hole respectively, and when the pressure intensity of the shell sleeve is larger than that of the negative end, the valve block swings to be away from the sealing ring to be opened. When the pressure intensity of the front end of the shell sleeve is smaller than the pressure intensity of the back end of the shell sleeve or the pressure intensity of the front end of the shell sleeve is smaller than the pressure intensity of the back end of the shell sleeve, the valve plate swings to be attached to the sealing ring to be closed, the structure is simple, the one-way valve can be directly embedded in a pipeline, the pipeline does not need to be cut off at the moment, a connector does not exist in the middle of the pipeline any more, and therefore the firmness of the pipeline is better.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tractor technical field especially relates to a one-way valve, one-way communication pipe fitting, oil tank assembly and tractor. BACKGROUND

[0002] In order to promote the tractor operation length, currently very many tractors adopt the solution of left and right double oil tank arrangement, this scheme solves the problem of tractor operation length to a certain extent, and simultaneously, new problems appear: when tractor carries out slope operation, the fuel in fuel tank flows into the fuel tank of lower position, when sucking oil from the fuel tank of higher place, it is easy to not suck fuel and lead to tractor flameout, further cause user operation interruption, cause user complaint.

[0003] At present, the main oil tank and the auxiliary oil tank are communicated through the rubber tube, and a one-way valve is added on the rubber tube, and the engine only sucks oil from the main oil tank, and the fuel between the main oil tank and the auxiliary oil tank can only flow into the main oil tank from the auxiliary oil tank, but the connection firmness of the rubber tube and the one-way valve is poor, there is the risk of loosening and oil leakage, and the existing one-way valve structure is complex, and there is the risk of jam. UTILITY MODEL CONTENTS

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a one-way valve with simple structure and capable of being directly embedded into a pipeline for installation.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is as follows: a one-way valve, comprising a shell, a sealing ring and a valve piece, the shell is an annular piece, and the side wall of the shell is provided with an arc-shaped mounting hole along the ring direction, the two ends of the sealing ring are a positive end and a reverse end respectively, the sealing ring is embedded in the positive end of the shell, the valve piece has two lugs at the edge, the valve piece is placed in the shell, and the two lugs are hung at the two ends of the mounting hole respectively, when the pressure of the shell is greater than that of the reverse end, the valve piece swings away from the sealing ring to open, or when the pressure of the positive end of the shell is less than that of the reverse end, the valve piece swings to be attached to the sealing ring to close.

[0006] The beneficial effects of the above technical scheme are that the structure is simple, so that the one-way valve can be directly embedded in the pipeline, at this time, the pipeline does not need to be cut off, so there is no joint in the middle of the pipeline, thereby making the pipeline more firm.

[0007] In the above technical scheme, the shell is a circular pipe, and the arc center angle corresponding to the mounting hole is less than 180°.

[0008] The beneficial effects of the above technical scheme are that the structure is simple, and the valve piece can be put into the shell through the mounting hole, and the two lugs on the valve piece can be supported at the two ends of the mounting hole.

[0009] The shell sleeve and the valve plate are both hard parts in the technical solution.

[0010] The beneficial effect of the technical solution is that the shell sleeve and the valve plate are not easy to deform, and the valve plate has a good reverse stopping effect when it is in a closed state.

[0011] The sealing ring includes a base plate and a flexible plate, both of which are annular parts, and the flexible plate is arranged on one side of the base plate, the base plate is embedded in the inner end of the shell sleeve, and the flexible plate is located on the side of the base plate close to the valve plate.

[0012] The beneficial effect of the technical solution is that the base plate can be used as a support, and the sealing between the valve plate and the flexible plate is better when they are in contact.

[0013] The base plate is a hard part in the technical solution.

[0014] The beneficial effect of the technical solution is that the base plate has high rigidity in the shell sleeve to achieve firm installation in the shell sleeve.

[0015] The flexible plate is a fluororubber material part in the technical solution.

[0016] The beneficial effect of the technical solution is that it has good flexibility and good oil resistance, so it has good durability.

[0017] The outer wall of the sealing ring is provided with a ring groove, and the positive end of the shell sleeve is provided with an inward flange embedded in the ring groove.

[0018] The beneficial effect of the technical solution is that the structure is simple, and the installation of the sealing ring at the positive end of the shell sleeve is more convenient, and the sealing ring is not easy to come off at the positive end of the shell sleeve.

[0019] The second purpose of the utility model is to provide a one-way communication pipe fitting with simple structure and good firmness.

[0020] Another technical solution of the utility model is as follows: a one-way communication pipe fitting, including a communication pipe and a one-way valve as described above, the two ends of the communication pipe are positive end and negative end respectively, the one-way valve is embedded in the communication pipe, the positive end of the shell sleeve is close to the positive end of the communication pipe, and the negative end of the shell sleeve is close to the negative end of the communication pipe.

[0021] The beneficial effect of the technical solution is that the structure is simple, and the one-way valve is directly embedded in the communication pipe, so that the middle part of the communication pipe does not need to be cut off to install the one-way valve, so that the firmness is good.

[0022] The third purpose of the utility model is to provide an oil tank assembly with stable oil supply.

[0023] Another technical scheme of the utility model is as follows: an oil tank assembly, comprising a main oil tank, an auxiliary oil tank and the one-way communication pipe as described above, the auxiliary oil tank is provided with an oil outlet, the main oil tank is provided with an oil supplementing port, the oil outlet of the auxiliary oil tank is communicated with the positive end of the communication pipe, and the oil supplementing port of the main oil tank is communicated with the reverse end of the communication pipe.

[0024] The above technical scheme has the beneficial effects that when the liquid level in the main oil tank is low, the auxiliary oil tank can supply oil to the main oil tank, but when the liquid level in the auxiliary oil tank is low, the oil in the main oil tank cannot be supplied to the auxiliary oil tank.

[0025] The fourth purpose of the utility model is to provide a tractor with stable oil supply and large oil tank capacity.

[0026] Another technical scheme of the utility model is as follows: a tractor, comprising the oil tank assembly as described above.

[0027] The above technical scheme has the beneficial effects of simple structure, large oil tank capacity and good reliability. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a side view of the one-way valve in the utility model embodiment 1;

[0029] Figure 2 It is an explosion schematic view of the one-way valve in the utility model embodiment 1;

[0030] Figure 3 It is a structural schematic view of the one-way valve in the utility model embodiment 1 in the closed state;

[0031] Figure 4 It is a structural schematic view of the one-way valve in the utility model embodiment 1 in the open state;

[0032] Figure 5 It is an assembly schematic view of the shell sleeve and the sealing ring in the utility model embodiment 2;

[0033] Figure 6 It is an assembly schematic view of the shell sleeve and the sealing ring in the utility model embodiment 3;

[0034] Figure 7 It is a sectional view of the one-way communication pipe in the utility model embodiment 4;

[0035] Figure 8 It is a structural schematic view of the oil tank assembly in the utility model embodiment 5.

[0036] In the diagram: 1. One-way connecting pipe fitting; 11. One-way valve; 111. Shell; 1111. Mounting hole; 1112. Inner flange; 112. Sealing ring; 1121. Base plate; 1122. Flexible plate; 1123. Annular groove; 113. Valve plate; 1131. Lug; 1132. Square part; 1133. Semi-circular part; 12. Connecting pipe; 2. Main oil tank; 3. Auxiliary oil tank. Detailed Implementation

[0037] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will be more clearly described in light of the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0038] Example 1

[0039] like Figures 1-4 As shown, this embodiment provides a one-way valve, including a housing 111, a sealing ring 112, and a valve plate 113. The housing 111 is an annular component, and its sidewall is provided with an arc-shaped mounting hole 1111 along the circumferential direction. The two ends of the sealing ring 112 are a positive end and a negative end, respectively, and the sealing ring 112 is embedded in the positive end of the housing 111. The valve plate 113 has two lugs 1131 at its edge, and the valve plate 113 is placed inside the housing 111. 31 are respectively hung at both ends of the mounting hole 1111. When the pressure of the housing 111 is greater than the pressure of the reverse end, the valve plate 113 swings away from the sealing ring 112 to open. Or when the pressure of the positive end of the housing 111 is less than the pressure of the reverse end, the valve plate 113 swings to fit with the sealing ring 112 to close. Its structure is simple, so that the one-way valve can be directly embedded in the pipeline. At this time, there is no need to isolate the pipeline. Therefore, there will be no joint in the middle of the pipeline, thus making the pipeline more reliable.

[0040] In the above technical solution, the housing 111 is cylindrical, and the arc angle corresponding to the mounting hole 1111 is less than 180° (preferably any value or range between any two of 160°, 150°, 140°, 130° and 120°, and more preferably, the arc angle of the mounting hole is 135°). Its structure is simple, and it allows the valve plate to be inserted into the housing through the mounting hole, and the two lugs on the valve plate can support it at both ends of the mounting hole.

[0041] In the above technical solution, both the housing 111 and the valve plate 113 are rigid components, which makes them less prone to deformation. Furthermore, the valve plate provides good backflow prevention when closed. Preferably, in this embodiment, the housing can be a metal component, made of copper, aluminum, or stainless steel, while the valve plate can be made of rigid plastic, or alternatively, a metal component of the same material as the housing.

[0042] Preferably, in this embodiment, the end of the sealing ring near the reverse end of the housing is flush with the end of the mounting hole near the positive end of the housing. This allows the valve plate to better fit with the sealing ring when it is in the closed state. The valve plate has an irregular shape. Specifically, the valve plate has a square portion 1132 and a semi-circular portion 1133. The straight edge of the semi-circular portion is integrally formed with one side of the square portion (and the two are coplanar). The two lugs are respectively protruding from the two ends of the square portion away from the semi-circular portion. When the valve plate is hooked at the mounting hole and extends into the housing through the mounting hole, the valve plate can completely cover the inner hole of the sealing ring when it is in a state of fit with the sealing ring.

[0043] The one-way valve provided in this embodiment cannot be used alone; it needs to be embedded in a pipeline. In this case, the pipeline will block the mounting hole and restrict the position of the valve plate (specifically, so that the valve plate cannot be removed from the mounting hole). The valve plate can slide within a small range along the width direction of the mounting hole (i.e., the axial direction of the housing) at the position of the mounting hole.

[0044] Example 2

[0045] Same as Example 1, except that, as Figure 5 As shown, the sealing ring 112 in the above technical solution includes a base plate 1121 and a flexible plate 1122. Both the base plate 1121 and the flexible plate 1122 are annular parts, and the flexible plate 1122 is disposed on one side of the base plate 1121. The base plate 1121 is embedded in the inner positive end of the housing 111, and the flexible plate 1122 is located on the side of the base plate 1121 close to the valve plate 113. In this way, the base plate can serve as a support, and the sealing performance between the valve plate and the flexible plate is better when they are in contact.

[0046] In the above technical solution, the substrate 1121 is a rigid component, which gives the substrate high rigidity within the housing to ensure reliable installation. The substrate can be a rigid plastic component or a metal component made of the same material as the housing.

[0047] The flexible sheet 1122 described in the above technical solution is made of fluororubber, which has good flexibility and good oil resistance, thus it has good durability.

[0048] Example 3

[0049] Same as Example 1, except that, as Figure 6 As shown, the positive end of the housing 111 may be provided with an inner flange 1112, and the outer wall of the sealing ring 112 is provided with an annular groove 1123, and the inner flange 1112 of the positive end of the housing 111 is embedded in the annular groove 1123 to prevent the sealing ring 112 from loosening from the positive end of the housing 111. In this embodiment, the sealing ring may also be made of fluororubber.

[0050] Example 4

[0051] like Figure 7 As shown, this embodiment provides a one-way connecting pipe fitting, including a connecting pipe 12 and a one-way valve 11 as described in Embodiment 1, Embodiment 2 or Embodiment 3. The two ends of the connecting pipe 12 are a positive end and a negative end, respectively. The one-way valve 11 is embedded in the connecting pipe 12. The positive end of the housing 111 is close to the positive end of the connecting pipe 12, and the negative end of the housing 111 is close to the negative end of the connecting pipe 12. Its structure is simple, and the one-way valve is directly embedded into the connecting pipe, so that the middle of the connecting pipe does not need to be cut to install the one-way valve, thereby making it reliable.

[0052] In this embodiment, the connecting pipe is a flexible pipe, and existing mature oil supply hoses can be used.

[0053] Example 5

[0054] like Figure 8 As shown, this embodiment provides an oil tank assembly, including a main oil tank 2, an auxiliary oil tank 3, and a one-way connecting pipe 1 as described in embodiment 4. The auxiliary oil tank 3 has an oil outlet, the main oil tank 2 has an oil replenishment port, the positive end of the connecting pipe 12 is connected to the oil outlet of the auxiliary oil tank 3, and the oil replenishment port of the main oil tank 2 is connected to the negative end of the connecting pipe 12. This allows oil to be supplied from the auxiliary oil tank to the main oil tank when the liquid level in the main oil tank is low, but oil will not be supplied from the main oil tank to the auxiliary oil tank when the liquid level in the auxiliary oil tank is low.

[0055] Example 6

[0056] This embodiment provides a tractor, including the fuel tank assembly as described in Embodiment 5, which has a simple structure, large fuel tank capacity, and good reliability.

[0057] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art can make slight changes, modifications and equivalent changes of the present application within the scope of the technical scheme of the present application, and the equivalent embodiments of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A one-way valve characterized by, The one-way valve comprises a shell (111), a sealing ring (112) and a valve piece (113), the shell (111) is an annular member, and an arc-shaped mounting hole (1111) is arranged on the sidewall of the shell (111) in the circumferential direction, the sealing ring (112) has a positive end and a negative end, the sealing ring (112) is embedded in the positive end of the shell (111), the valve piece (113) has two hanging ears (1131) at the edge thereof, the valve piece (113) is arranged in the shell (111), and the two hanging ears (1131) are respectively hung on the two ends of the mounting hole (1111), when the pressure of the shell (111) is greater than that of the negative end, the valve piece (113) swings away from the sealing ring (112) to be opened, or when the pressure of the positive end of the shell (111) is less than that of the negative end, the valve piece (113) swings to be combined with the sealing ring (112) to be closed.

2. The one-way valve of claim 1, wherein The shell (111) is a circular tube, and the corresponding arc center angle of the mounting hole (1111) is less than 180°.

3. The one-way valve of claim 1, wherein, The shell (111) and the valve piece (113) are both hard members.

4. The one-way valve of claim 1, wherein, The sealing ring (112) comprises a base piece (1121) and a flexible piece (1122), the base piece (1121) and the flexible piece (1122) are both annular members, the flexible piece (1122) is arranged on one side of the base piece (1121), the base piece (1121) is embedded in the positive end of the shell (111), and the flexible piece (1122) is located on the side of the base piece (1121) close to the valve piece (113).

5. The one-way valve of claim 4, wherein, The base piece (1121) is a hard member.

6. The one-way valve of claim 4, wherein, The flexible piece (1122) is a fluororubber member.

7. The one-way valve of claim 1, wherein An annular groove (1123) is arranged on the outer wall of the sealing ring (112), and an inward flange (1112) is arranged on the positive end of the shell (111) and embedded in the annular groove (1123).

8. A one-way communication pipe fitting, characterized by, The one-way valve assembly comprises a communication pipe (12) and the one-way valve according to any one of claims 1-7, the communication pipe (12) has a positive end and a negative end, the one-way valve is embedded in the communication pipe (12), the positive end of the shell (111) is close to the positive end of the communication pipe (12), and the negative end of the shell (111) is close to the negative end of the communication pipe (12).

9. An oil tank assembly characterized by, The one-way communication pipe assembly comprises a main oil tank (2), a secondary oil tank (3) and the one-way communication pipe according to claim 8, the secondary oil tank (3) has an oil outlet, the main oil tank (2) has an oil supplement port, the positive end of the communication pipe (12) is communicated with the oil outlet of the secondary oil tank (3), and the oil supplement port of the main oil tank (2) is communicated with the negative end of the communication pipe (12).

10. A tractor characterised in that, The oil tank assembly comprises the oil tank assembly according to claim 9.

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