A three-way oil return component

Abstract

The present invention relates to the technical field of valves, and specifically relates to a three-way oil return assembly, which includes an oil inlet assembly and an oil outlet assembly. The oil inlet assembly and the oil outlet assembly are assembled and connected. The oil inlet assembly includes a reversing valve block, a fixed joint, and an oil return port joint. The fixed joint is sleeved at one end of the reversing valve block, and the oil return port joint is inserted into the oil return end of the reversing valve block. The oil outlet assembly includes a locking nut and a guiding valve body inserted into the locking nut. An oil outlet joint is inserted at one end of the guiding valve body. The beneficial effects are as follows: The three-way oil return assembly proposed by the present invention is connected to the oil outlet pipeline through the oil outlet joint. The oil inlet assembly and the oil return assembly are used in combination, and the switching of its oil outlet and oil return port can be quickly realized. The outlet check valve is arranged at the front end of the oil outlet joint and serves as a guiding component for the oil port switching of the oil inlet assembly. At the same time, the check valve structure can prevent the grease in the oil outlet pipeline from overflowing reversely.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and specifically to a three-way oil return assembly. Background Art

[0002] The opening and closing member (sphere) of a ball valve is driven by a valve stem and rotates around the axis of the ball valve. It can also be used for the regulation and control of fluids. Among them, the hard-sealed V-type ball valve has a strong shearing force between its V-type ball core and the metal valve seat surfacing with hard alloy, and is especially suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels.

[0003] In the prior art, when lubricating the lubrication points of detachable components in the field of construction machinery, it is necessary to adjust the pipeline of the lubrication system according to the assembly requirements of the components.

[0004] However, currently, ball valves or solenoid valves are generally used for oil circuit switching. However, no matter whether a ball valve or a solenoid valve is used, it is impossible to simultaneously meet the functional requirements of the convenience of pipeline detachment and rapid switching. Summary of the Invention

[0005] The purpose of the present invention is to provide a three-way oil return assembly to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A three-way oil return assembly includes an oil inlet assembly and an oil outlet assembly. The oil inlet assembly and the oil outlet assembly are assembled and connected. The oil inlet assembly includes a reversing valve block, a fixed joint, and an oil return port joint. The fixed joint is sleeved on one end of the reversing valve block, and the oil return port joint is inserted into the oil return end of the reversing valve block;

[0007] The oil outlet assembly includes a locking nut and a guiding valve body inserted into the locking nut. One end of the guiding valve body is inserted with an oil outlet joint.

[0008] Preferably, a sealing seat is screwed at the pipe orifice at one end of the reversing valve block. A sealing ring A is clamped between the sealing seat and the reversing valve block, and the sealing ring A is fixed in the pipe orifice at one end of the reversing valve block.

[0009] Preferably, the sealing seat is connected with the guiding valve body in a matching manner. The inner ring surface of the sealing seat is provided with a sealing ring B. After the guiding valve body is inserted into the sealing seat, the sealing ring B is clamped between the sealing seat and the guiding valve body, and the end of the guiding valve body pushes against the sealing section coupled inside the reversing valve block.

[0010] Preferably, the sealing section includes a sealing ring C, a cone valve, a spring, and a plug. A sealing ring C is provided at one end of the cone valve facing the sealing seat, a spring is provided at the other end of the cone valve, the spring is installed on the surface of the plug, and the plug is installed at the other end pipe orifice of the reversing valve block.

[0011] Preferably, a sealing ring D is provided on the inner ring surface of the fixed joint. When the fixed joint is sleeved on the other end pipe orifice of the reversing valve block, the sealing ring D is clamped between the fixed joint and the reversing valve block.

[0012] Preferably, a back-tightening nut is sleeved and screwed on the outside of the fixed joint, an oil inlet joint is inserted at the pipe orifice of the fixed joint, and an oil return port is provided at the oil return end of the reversing valve block.

[0013] Preferably, the locking nut and the reversing valve block are sleeved and screwed fixedly, and a shaft retaining ring is sleeved on the outside of the guiding valve body to limit the guiding valve body.

[0014] Preferably, steel balls are provided inside the guiding valve body, and a cone spring is provided on the surface of the steel balls.

[0015] Preferably, a cone valve oil inlet is provided at one end of the cone valve facing away from the sealing seat, and a cone valve oil outlet is provided on the surface of the cone valve. There are multiple cone valve oil outlets, and the multiple cone valve oil outlets are arranged and distributed around the outer wall of the cone valve. The cone valve is a stepped circular tube structure, and the end of the cone valve facing the sealing seat is a frustum-shaped ring structure.

[0016] Preferably, a guiding valve body oil outlet is provided at one end of the guiding valve body extending out of the locking nut, a guiding valve body oil inlet is provided on the surface of the other end of the guiding valve body, and a through pipe is integrally formed at the other end of the guiding valve body.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The three-way oil return assembly proposed by the present invention is communicated with the oil outlet pipeline through the oil outlet joint. The oil inlet assembly and the oil return assembly are used in combination, and the switching of its oil outlet and oil return port can be realized quickly; the outlet one-way valve is arranged at the front end of the oil outlet joint and serves as a guiding component for the oil port switching of the oil inlet assembly. At the same time, the one-way valve structure can prevent the grease in the oil outlet pipeline from overflowing reversely. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the principle of the oil outlet state (after assembly) of a three-way oil return assembly;

[0020] Figure 2 is a schematic diagram of the principle of the oil return state (before assembly) of a three-way oil return assembly;

[0021] Figure 3 is a schematic diagram of the structure of the oil inlet assembly;

[0022] Figure 4 It is a schematic structural diagram of the oil outlet component;

[0023] Figure 5 It is a schematic structural diagram of the cone valve;

[0024] Figure 6 It is a schematic structural diagram of the guide valve body.

[0025] In the figure: 1 is the oil inlet component; 101 is the reversing valve block; 102 is the sealing ring A; 103 is the sealing seat; 104 is the sealing ring B; 105 is the sealing ring C; 106 is the cone valve; 107 is the spring; 108 is the plug; 109 is the sealing ring D; 1010 is the back-tightening nut; 1011 is the fixed joint; 1012 is the oil inlet joint; 1013 is the oil return port joint; 2 is the oil outlet component; 201 is the locking nut; 202 is the shaft retaining ring; 203 is the oil outlet joint; 204 is the guide valve body; 205 is the steel ball; 206 is the cone spring; 3 is the cone valve oil inlet; 4 is the cone valve oil outlet; 5 is the guide valve body oil inlet; 6 is the guide valve body oil outlet; 7 is the oil return port. Specific embodiments

[0026] In order to clearly and completely describe the purpose, technical solution of the present invention, and make the advantages more clearly understood, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] Embodiment 1

[0028] Please refer to Figures 1 to 2 , the present invention provides a technical solution: a three-way oil return component, including an oil inlet component 1 and an oil outlet component 2, the oil inlet component 1 and the oil outlet component 2 are assembled and connected. The oil inlet component 1 includes a reversing valve block 101, a fixed joint 1011, and an oil return port joint 1013. The fixed joint 1011 is sleeved at one end of the reversing valve block 101, and the oil return port joint 1013 is inserted into the oil return end of the reversing valve block 101; the oil outlet component 2 includes a locking nut 201 and a guide valve body 204 inserted into the locking nut 201, and an oil outlet joint 203 is inserted at one end of the guide valve body 204; it is communicated with the oil outlet pipeline through the oil outlet joint. The oil inlet component and the oil return component are used in combination to quickly realize the switching of its oil outlet and oil return port; the outlet check valve is arranged at the front end of the oil outlet joint, serving as a guiding component for the oil port switching of the oil inlet component, and at the same time, the check valve structure can prevent the grease in the oil outlet pipeline from overflowing reversely.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, in order to realize the connection of the reversing valve block 101, the sealing ring B 104 and the fixed joint 1011, a sealing seat 103 is screwed at one end of the reversing valve block 101. A sealing ring A 102 is clamped between the sealing seat 103 and the reversing valve block 101. The sealing ring A 102 is fixed in the end pipe orifice of the reversing valve block 101. The sealing seat 103 is connected with the guide valve body 204 in a matching manner. A sealing ring B 104 is arranged on the inner ring surface of the sealing seat 103. After the guide valve body 204 is inserted into the sealing seat 103, the sealing ring B 104 is clamped between the sealing seat 103 and the guide valve body 204, and the end of the guide valve body 204 pushes against the sealing section connected in a coupling manner inside the reversing valve block 101; The sealing section includes a sealing ring C 105, a cone valve 106, a spring 107 and a plug 108. A sealing ring C 105 is arranged at one end of the cone valve 106 facing the sealing seat 103. A spring 107 is arranged at the other end of the cone valve 106. The spring 107 is installed on the surface of the plug 108. The plug 108 is installed at the other end pipe orifice of the reversing valve block 101; A sealing ring D 109 is arranged on the inner ring surface of the fixed joint 1011. When the fixed joint 1011 is sleeved on the other end pipe orifice of the reversing valve block 101, the sealing ring D 109 is clamped between the fixed joint 1011 and the reversing valve block 101; A back-tightening nut 1010 is sleeved and screwed on the outside of the fixed joint 1011, and an oil inlet joint 1012 is inserted at the pipe orifice of the fixed joint 1011. An oil return port 7 is arranged at the oil return end of the reversing valve block 101.

[0031] Embodiment Three

[0032] Refer to the appendix Figure 4 , on the basis of the second embodiment, in order to realize the connection between the lock nut 201 and the guide valve body 204, the lock nut 201 and the reversing valve block 101 are sleeved and fixed by screwing. A shaft retaining ring 202 is sleeved on the outside of the guide valve body 204. The shaft retaining ring 202 positions the guide valve body 204. A steel ball 205 is arranged inside the guide valve body 204, and a conical spring 206 is arranged on the surface of the steel ball 205.

[0033] Embodiment Four

[0034] Refer to the appendix Figure 5 , on the basis of the third embodiment, in order to realize the through function of the cone valve 106, a cone valve oil inlet 3 is arranged at one end of the cone valve 106 facing away from the sealing seat 103, and a cone valve oil outlet 4 is arranged on the surface of the cone valve 106. There are a plurality of cone valve oil outlets 4, and the plurality of cone valve oil outlets 4 are arranged and distributed around the outer wall of the cone valve 106. The cone valve 106 is a stepped circular tube structure, and one end of the cone valve 106 facing the sealing seat 103 is a frustum-shaped ring structure.

[0035] Embodiment Five

[0036] On the basis of Embodiment 4, in order to achieve the through function of the guiding valve body 204, an oil outlet 6 of the guiding valve body is provided at one end of the guiding valve body 204 extending out of the locking nut 201, an oil inlet 5 of the guiding valve body is provided on the surface of the other end of the guiding valve body 204, and a through pipe is integrally formed at the other end of the guiding valve body 204.

[0037] In actual use, the oil inlet assembly 1 and the oil outlet assembly 2 are assembled and used to realize the switching between the oil return function and the fat outlet function; in the oil inlet assembly 1, the cone valve 106, the sealing ring C105 and the sealing seat 103 form a sealing section under the action of the spring 107 and the plug 108; the cone valve 106 and the reversing valve block 101 are coupling parts and can bear high-pressure grease after honing and trial fitting; the sealing seat 103 is threadedly connected to the reversing valve block 101, and the sealing ring A is added to increase the seal; the sealing seat 103 also adds the sealing ring B104 to connect the guiding valve body 204 in the oil outlet assembly 2 to form a sealing section; the fixed joint 1011 and the sealing ring D109 are connected to the reversing valve body 101, and the oil inlet assembly 1 is fixed at the position to be assembled by adding the back tightening nut 1010; the oil inlet position is connected to the oil inlet pipeline through the oil inlet joint. In the oil outlet assembly 2, the guiding valve body 204, the steel ball 205 and the cone spring 206 are assembled to form a one-way valve to prevent the grease in the subsequent pipeline from overflowing; the one-way valve is assembled with the locking nut 201 through the shaft retaining ring 202, and the end is connected to the oil outlet joint 203 and connected to the subsequent pipeline; when the oil inlet assembly 1 is used alone, the grease enters from the oil inlet joint 1012, the cone valve 106 and its seal C105 are closed with the sealing seat 103 under the action of the spring 107, the internal pipeline of the cone valve 106 is closed, and the grease flows from the oil return port 7 to the oil return joint 1013 and then to the oil return pipeline. When the oil inlet assembly 1 and the oil outlet assembly 2 are used in cooperation, the guiding valve body 204 of the oil outlet assembly 2 is inserted into the sealing seat 103 of the oil inlet assembly and is threadedly connected through the reversing valve block 101 and the locking nut 201. At this time, the seal B104 and the guiding valve body 204 form a sealing surface and can bear high-pressure grease. When the guiding valve body 204 contacts and pushes the cone valve 106 to move, the internal pipeline of the cone valve is opened, and the grease flows to the oil outlet assembly 2; the one-way valve is opened under the action of the high-pressure grease and then flows to the oil outlet pipeline. At this time, the cone valve 106 closes the oil return port 7, and the oil return pipeline is cut off, so as to realize the oil circuit switching function of the three-way oil return assembly.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way oil return assembly, comprising an oil inlet assembly (1) and an oil outlet assembly (2), the oil inlet assembly (1) and the oil outlet assembly (2) being assembled and connected, characterized in that: The inlet oil assembly (1) includes a reversing valve block (101), a fixed joint (1011), and an oil return port joint (1013). The fixed joint (1011) is sleeved at one end of the reversing valve block (101), and the oil return port joint (1013) is inserted into the oil return end of the reversing valve block (101). The outlet oil assembly (2) includes a lock nut (201) and a guide valve body (204) inserted into the lock nut (201). An outlet oil port joint (203) is inserted at one end of the guide valve body (204). A sealing seat (103) is screwed at the pipe orifice at one end of the reversing valve block (101). A sealing ring A (102) is clamped between the sealing seat (103) and the reversing valve block (101), and the sealing ring A (102) is fixed in the pipe orifice at one end of the reversing valve block (101). The sealing seat (103) is connected in cooperation with the guide valve body (204). A sealing ring B (104) is arranged on the inner ring surface of the sealing seat (103). After the guide valve body (204) is inserted into the sealing seat (103), the sealing ring B (104) is clamped between the sealing seat (103) and the guide valve body (204), and the end of the guide valve body (204) pushes against the sealing section coupled inside the reversing valve block (101). The sealing section includes a sealing ring C (105), a cone valve (106), a spring (107), and a plug (108). A sealing ring C (105) is arranged at one end of the cone valve (106) facing the sealing seat (103). A spring (107) is arranged at the other end of the cone valve (106). The spring (107) is installed on the surface of the plug (108), and the plug (108) is installed at the pipe orifice at the other end of the reversing valve block (101).

2. The three-way oil return assembly according to claim 1, characterized in that: A sealing ring D (109) is arranged on the inner ring surface of the fixed joint (1011). When the fixed joint (1011) is sleeved on the pipe orifice at the other end of the reversing valve block (101), the sealing ring D (109) is clamped between the fixed joint (1011) and the reversing valve block (101).

3. The tee oil return assembly according to claim 2, wherein: A back-tightening nut (1010) is sleeved and screwed on the outside of the fixed joint (1011). An inlet oil port joint (1012) is inserted at the pipe orifice of the fixed joint (1011), and an oil return port (7) is opened at the oil return end of the reversing valve block (101).

4. The three-way oil return assembly according to claim 1, characterized in that: The lock nut (201) is sleeved on the reversing valve block (101). A shaft retaining ring (202) is sleeved on the outside of the guide valve body (204), and the shaft retaining ring (202) limits the guide valve body (204).

5. The three-way oil return assembly according to claim 1, characterized in that: A steel ball (205) is arranged inside the guide valve body (204), and a cone spring (206) is arranged on the surface of the steel ball (205).

6. The tee oil return assembly according to claim 1, characterized in that: A cone valve inlet port (3) is arranged at the end of the cone valve (106) facing away from the sealing seat (103). A cone valve outlet port (4) is arranged on the surface of the cone valve (106). There are multiple cone valve outlet ports (4), and the multiple cone valve outlet ports (4) are arranged and distributed around the outer wall of the cone valve (106). The cone valve (106) is a stepped circular tube structure, and the end of the cone valve (106) facing the sealing seat (103) is a frustum-shaped ring structure.

7. The three-way oil return assembly according to claim 1, characterized in that: One end of the extending locking nut (201) of the guiding valve body (204) is provided with an oil outlet (6) of the guiding valve body, the surface of the other end of the guiding valve body (204) is provided with an oil inlet (5) of the guiding valve body, and a through pipe is integrally formed at the other end of the guiding valve body (204).

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