One-way valve for lubricating oil conveying pipeline

Abstract

The utility model relates to the technical field of conveying pipelines, in particular to a one-way valve for a lubricating oil conveying pipeline, which comprises a valve body, the valve body is divided into an upper part and a lower part, the upper part is a hexagonal cylinder, the lower part is in a circular truncated cone shape, and a joint position and a containing cavity which are communicated are formed inside the upper part. An oil outlet communicated with the containing cavity is formed in the lower portion, a fixing sleeve connected to the interior of the containing cavity in an interference fit mode is arranged in the upper portion, a plurality of oil holes are formed in the outer side of the fixing sleeve, and an oil control portion is arranged between the fixing sleeve and the lower portion. According to the one-way valve for the lubricating oil conveying pipeline, the valve body is small in size and suitable for being installed in a small-diameter pipeline with the limited space, meanwhile, the one-way valve in the valve body is compact in structure and small in occupied space, and therefore the one-way valve can be used in the environment with the limited space; and meanwhile, the valve body can be conveniently mounted or dismounted in a narrow space, the structure of the valve body is simple, parts are few, and therefore the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying pipelines, and particularly relates to a check valve for a lubricating oil conveying pipeline. Background Art

[0002] At present, in various mechanical equipment, the normal operation of the lubricating oil system is crucial for ensuring the reliability of the equipment and extending its service life. The lubricating oil system usually includes multiple components such as an oil pump, a filter, a radiator, and a conveying pipeline. Between these components, a check valve is usually installed to prevent the reverse flow of lubricating oil.

[0003] The existing check valves are relatively large in size and not suitable for installation in small-diameter pipelines with limited space. In a narrow space, installation and disassembly become difficult. Many existing check valves have a complex structure and many parts, which not only increase the manufacturing cost but also are prone to failure during use and have a greater maintenance difficulty. The structure of the check valve is not compact enough, occupies more space, and is not conducive to use in an environment with limited space. Content of the Utility Model

[0004] To achieve the above object, the utility model provides the following technical solution: A check valve for a lubricating oil conveying pipeline, including a valve body. The valve body is divided into an upper part and a lower part. The upper part is in the shape of a hexagonal cylinder, and the lower part is in the shape of a frustum of a cone. An adapter position and a receiving cavity are formed inside the upper part and are connected to each other. An oil outlet is formed inside the lower part and is connected to the receiving cavity. A fixing sleeve is connected to the receiving cavity in the upper part by interference fit. A plurality of oil holes are provided on the outer side of the fixing sleeve. A oil control part is arranged between the fixing sleeve and the lower part.

[0005] Further, the oil control part includes a nut threadedly connected to the oil outlet. A valve core extending into the fixing sleeve is inserted through the nut. A spring is sleeved on the valve stem of the valve core.

[0006] Further, a ring edge is formed on the inner side of the valve body. The ring edge separates the adapter position and the receiving cavity up and down, and the diameter of the adapter position is smaller than the diameter of the receiving cavity.

[0007] Further, the fixing sleeve is divided into an upper sleeve and a lower sleeve. The diameter of the upper sleeve is smaller than that of the lower sleeve, and the upper sleeve is integrally formed inside the lower sleeve. The outer side of the upper sleeve is connected to the ring edge by interference fit.

[0008] Further, an outer ridge and an inner ridge are formed between the upper sleeve and the lower sleeve. The outer ridge is in contact with the bottom of the ring edge, and the inner ridge is in contact with the top of the valve core. The diameter of the valve head of the valve core is equal to the inner diameter of the lower sleeve.

[0009] Further, the nut is in the shape of a cross, and threads are provided on all four protruding ends.

[0010] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0011] The one-way valve for the lubricating oil delivery pipeline is small in volume by itself, suitable for installation in small-diameter pipelines with limited space. At the same time, the one-way valve structure in the valve body is compact and occupies less space, so it can be used in an environment with limited space. The valve core can be easily removed by using a loose and tight nut, and the valve body is also convenient for installation or removal in a narrow space. At the same time, the structure of the valve body is simple with fewer parts, thus reducing the manufacturing cost. Brief Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present invention;

[0013] Figure 2 is a sectional view of the structure of the present invention;

[0014] Figure 3 is a three-dimensional view of the valve core connection structure in the present invention.

[0015] In the figure: 1, valve body; 2, fixed sleeve; 3, valve core; 4, spring; 5, nut; 6, joint position; 7, oil outlet; 8, accommodation cavity; 9, oil hole. Specific Embodiment

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1-3 , a one-way valve for a lubricating oil delivery pipeline in this embodiment includes a valve body 1. The valve body 1 is integrally formed by an upper part and a lower part. The outer side of the upper part is hexagonal, and the lower part is frustum-shaped. The inner side of the upper part forms a joint position 6 and an accommodation cavity 8. The inner side of the upper part also forms a ring edge between the joint position 6 and the accommodation cavity 8. The diameter of the joint position 6 is smaller than the diameter of the accommodation cavity 8. The inner side of the ring edge is in interference fit with a fixed sleeve 2 in the accommodation cavity 8. The fixed sleeve 2 is made of wear-resistant brass. A plurality of oil holes 9 are opened on the outer side of the fixed sleeve 2. The inner side of the lower part forms an oil outlet 7. An oil control part extending into the interior of the fixed sleeve 2 to cover the oil holes 9 is installed in the oil outlet 7.

[0018] In the above structure, the outer side of the valve body is hexagonal, which makes it easy to rotate the valve body so that the joint is connected to the external pneumatic plunger pump, so it is convenient for the staff to disassemble and assemble the valve body. The valve body and the fixed sleeve are interference fit to achieve the effect of being non-removable, while ensuring its sealing. The fixed sleeve adopts a multi-oil hole structure, so that the lubricating oil can have a larger flow rate in one pulsating delivery. The accommodating chamber adopts a method of enlarging the inner cross-section so that the lubricating oil can have a larger flow rate in one pulsating delivery. When the pneumatic plunger pump introduces oil into the valve body, the oil control part will be driven to move under the action of the oil pressure, so that the oil is discharged into the accommodating chamber through multiple oil holes and then discharged through the oil outlet. When the pneumatic plunger pump is closed, the oil control part also quickly controls the oil outflow from the valve body to avoid overflow.

[0019] Among them, the oil control part includes a nut 5 threadedly connected to the oil outlet 7, the nut 5 is cross-shaped, and the nut 5 is threadedly connected to the oil outlet 7, so that the oil flow rate can be increased through four holes, and the four protruding ends of the nut 5 are all provided with threads and threadedly connected to the oil outlet 7, a valve core 3 is penetrated at the center of the nut 5, and the fixed sleeve 2 and the valve core 3 are precisely processed and adopt clearance fit to achieve a sliding effect. Due to the high viscosity of the lubricating oil, its sealing can be guaranteed. The valve core 3 is composed of a valve head and a valve stem, and the valve head extends into the fixed sleeve 2 to cover the oil hole, and the outer side of the valve stem is sleeved with a spring 4 above the nut 5, and the fixed sleeve 2 is integrally formed by an upper sleeve and a lower sleeve, the diameter of the upper sleeve is smaller than the diameter of the lower sleeve, and an outer ridge and an inner ridge are formed between the upper sleeve and the lower sleeve, and the top of the valve head can be tightly attached to the inner ridge, and the outer ridge is tightly attached to the bottom of the ring edge. By turning the nut, the nut moves upward, and at the same time, under the action of the spring, the valve core can be pushed upward, so that the valve head and the inner sill are tightly limited. At the same time, when the inner sill limits the valve head, the valve head can accurately block the oil hole. At the same time, when the nut is tightened, the spring can be compressed to adjust the resistance to oil pressure. When oil enters the valve body, the oil pressure will push the valve core to move, and the valve core and the nut shuttle and squeeze the spring until the valve head of the valve core moves down to a certain position, so that the oil hole and the joint are connected, and the oil can be guided into the accommodating chamber. When the oil intake stops, the valve core can be pushed to the initial position under the elastic force of the spring, so that the valve head is close to the inner sill.

[0020] The working principle of the above embodiment is:

[0021] First, the hexagonal shape of the valve body makes it easy to install the valve body on the pneumatic plunger pump, and then the lubricating oil enters the pipeline through the outlet of the pneumatic plunger pump and is connected to the valve body. The valve core moves toward the oil outlet under the action of the oil pressure. When the valve head of the valve core moves toward the oil outlet, the oil hole is connected to the joint position. The oil is discharged from the oil hole and enters the accommodating chamber, and then enters the pipeline through the oil outlet. At this time, the pressure at the joint is released, and the spring pushes the valve core back to the initial position. Due to the pulsation characteristics of the pneumatic plunger pump, the next cycle begins.

[0022] The entire workflow is completed, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0023] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0024] 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 principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A check valve for a lubricating oil pipeline, characterized in that: It includes a valve body (1), the valve body (1) is divided into an upper part and a lower part, the upper part is in the shape of a hexagonal prism, the lower part is in the shape of a frustum of a cone, a joint position (6) and a receiving cavity (8) which are connected to each other are formed inside the upper part, an oil outlet (7) which is connected to the receiving cavity (8) is formed inside the lower part, a fixing sleeve (2) which is connected to the receiving cavity (8) in an interference fit is arranged in the upper part, a plurality of oil holes (9) are formed on the outer side of the fixing sleeve (2), and an oil control part is arranged between the fixing sleeve (2) and the lower part.

2. The one-way valve for a lubricating oil delivery pipeline according to claim 1, wherein: The oil control part includes a nut (5) which is screwed to the oil outlet (7), a valve core (3) which penetrates through the nut (5) and extends into the fixing sleeve (2) is arranged on the nut (5), and a spring (4) is sleeved on the valve stem of the valve core (3).

3. The one-way valve for a lubricating oil delivery pipeline according to claim 1, characterized in that: A ring edge is formed on the inner side of the valve body (1), the ring edge separates the joint position (6) and the receiving cavity (8) up and down, and the diameter of the joint position (6) is smaller than that of the receiving cavity (8).

4. The one-way valve for a lubricating oil delivery pipeline according to claim 3, characterized in that: The fixing sleeve (2) is divided into an upper sleeve and a lower sleeve, the diameter of the upper sleeve is smaller than that of the lower sleeve, the upper sleeve is integrally formed inside the lower sleeve, and the outer side of the upper sleeve is connected to the ring edge in an interference fit.

5. The one-way valve for a lubricating oil delivery pipeline according to claim 4, characterized in that: An outer ridge and an inner ridge are formed between the upper sleeve and the lower sleeve, the outer ridge is attached to the bottom of the ring edge, the inner ridge is attached to the top of the valve core (3), and the valve head diameter of the valve core (3) is equal to the inner diameter of the lower sleeve.

6. The one-way valve for a lubricating oil delivery pipeline according to claim 2, characterized in that: The nut (5) is in the shape of a cross, and threads are provided at the four protruding ends.

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