Compact lubricating oil inlet assembly

Abstract

The utility model belongs to the technical field of valves, and discloses a compact type lubricating oil inlet assembly which comprises a high-pressure ball valve body, a T-shaped connector is stacked on the high-pressure ball valve body, and a filter element sleeve is arranged in the T-shaped connector in a penetrating mode. A mounting part is arranged at the bottom of the filter element sleeve, a groove part is arranged above the mounting part, and oil passing sieve holes are uniformly distributed in the groove part; an O-shaped sealing groove is formed in the upper portion of the groove part, an O-shaped sealing ring B is installed in the O-shaped sealing groove, and a dismounting and mounting part is arranged on the upper portion of the O-shaped sealing groove. A sealing gasket is arranged between the T-shaped joint and the high-pressure ball valve body; the interior of the filter element sleeve is in a stepped hole shape, an assembly hole is formed in the bottom of the stepped hole, and a filter element is arranged in the filter element sleeve. The filter element is mainly formed by connecting a cylindrical filter screen and an assembly part at the bottom, and the assembly part is in screwing fit with the assembly hole; a mounting hole is formed in the upper end of the high-pressure ball valve body, and the mounting part is screwed in the mounting hole. According to the utility model, the volume of the assembly is reduced, each joint is of a direction-adjustable structure, the field installation and adjustment are convenient, the required operation and maintenance space is small, and the total cost is low.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically a compact lubrication oil inlet assembly. Background Technology

[0002] A typical centralized lubrication system mainly consists of a pump station, pipelines, lubrication distribution elements (dual-line distributors, single-line distributors, intelligent oil distribution tanks), and an electrical control box. The pump station is connected to each lubrication distribution element via piping. The number of lubrication distribution elements configured in the lubrication system ranges from a few to hundreds, depending on the number of lubrication points on the equipment. Lubrication piping is fabricated on-site, making it difficult to guarantee the cleanliness of the piping during construction. Furthermore, the complex piping layout and numerous on-site interfaces prevent post-construction flushing as is possible with hydraulic systems. The lubricant used in the system is typically composed of base oil and various additives, often containing particulate matter. Therefore, to ensure proper system operation, we usually install oil filter sleeves at the inlet of each lubrication distribution element. These filters filter the lubricant supplied from the main pipeline, ensuring its cleanliness and preventing downstream lubrication distribution elements from experiencing piston jamming, piston hole scoring, or flow channel blockage due to impurities. A high-pressure ball valve is installed before the oil filter sleeve to disconnect the oil supply line during lubrication distribution element maintenance or filter element replacement. Using standard oil filter sleeves and high-pressure ball valves would require pipe fittings before, between, and after the high-pressure ball valve and filter sleeve, resulting in a bulky assembly that is inconvenient to install and operate, and also increases the overall cost.

[0003] The relevant reference CN208975277U discloses a lubricating oil filtration and pressure display device, including a tubular housing with a filter element installed inside. The filter element includes a filter screen connector, with a tubular filter screen fixed to the inner end of the connector and a filter screen end cap fixed to the outer end of the filter screen. The external thread on the outer wall of the filter screen connector engages with the internal thread of the tubular housing. The filter element is easy to replace, but the oil inlet direction cannot be adjusted, making on-site installation and adjustment inconvenient. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a compact lubrication oil inlet assembly with reduced component size, adjustable directional structure at each connection point, convenient on-site installation and adjustment, small required operation and maintenance space, and low overall cost.

[0005] To solve the above technical problems, this utility model provides a compact lubrication oil inlet assembly, including a high-pressure ball valve body, a T-type connector stacked on the high-pressure ball valve body, and a filter element sleeve passing through the T-type connector; the bottom of the filter element sleeve is an installation part, and above the installation part is a groove part, with oil screen holes evenly distributed in the groove part; above the groove part is an O-ring sealing groove, in which an O-ring sealing ring B is installed, and above the O-ring sealing groove is a disassembly part; a sealing gasket is placed between the T-type connector and the high-pressure ball valve body; the inside of the filter element sleeve is stepped hole-shaped, with an assembly hole at the bottom of the stepped hole, and a filter element is placed in the filter element sleeve; the filter element is mainly composed of a cylindrical filter screen connected to an assembly part at the bottom, and the assembly part and the assembly hole are screwed together; the upper end of the high-pressure ball valve body is provided with an installation hole, and the installation part is screwed into the installation hole.

[0006] By adopting the above technical solution, the filter element sleeve is passed through the central through hole of the T-joint and installed in the mounting hole of the high-pressure ball valve body. The filter element is placed in the filter element sleeve, and the high-pressure ball valve body and the T-joint are sealed and fitted together. The filter element sleeve and filter element are integrated into the pipeline connector, and the structure of the high-pressure ball valve is optimized. As a result, the volume of the components is greatly reduced without changing the function. All connections are adjustable in direction, making on-site installation and adjustment convenient. The required operation and maintenance space is small, and the overall cost is low.

[0007] Preferably, the diameter of the oil sieve hole is 1 mm.

[0008] By adopting the above technical solution, if the filter element is damaged and impurities are left inside the filter element sleeve, since the diameter of the oil sieve hole set on the filter element sleeve is 1mm, impurities larger than 1mm will be left inside the filter element sleeve and will not enter the rear lubrication distribution element, thus not causing significant damage to the lubrication distribution element.

[0009] Preferably, the T-end of the T-type connector is fitted with an oil outlet connector by passing a wire nut through it. The cylindrical section of the oil outlet connector is provided with an annular groove, and the wire nut is provided with an oblique hole at the corresponding position of the annular groove. During assembly, the wire passes through the oblique hole into the annular groove and forms a wire loop in the groove.

[0010] By adopting the above technical solution, the wire nut is confined to the oil outlet connector by the wire ring, allowing only flexible rotation but not forward or backward movement. If it is necessary to adjust the oil inlet direction of the oil inlet assembly, simply loosen the wire nut, adjust the oil inlet assembly to the appropriate direction, and then retighten the wire nut.

[0011] Preferably, an O-ring groove is formed on the outer conical surface of the oil outlet connector, and an O-ring seal A is set in the O-ring groove. The T-end of the T-type connector is provided with an inner conical hole. The oil outlet connector and the T-end of the T-type connector are sealed and connected by the O-ring seal A.

[0012] By adopting the above technical solution, the O-ring A is pressed tightly between the inner and outer conical surfaces to play a soft sealing role, thereby enhancing the sealing effect.

[0013] Preferably, a butterfly-shaped operating handle is installed on the central rotating shaft of the high-pressure ball valve body. A 90-degree annular notch is opened at the bottom of the butterfly-shaped operating handle, and a positioning pin is set in the 90-degree annular notch. The positioning pin is installed in the positioning hole on the front of the high-pressure ball valve body.

[0014] By adopting the above technical solution, the positioning pin is installed in the positioning hole on the front of the high-pressure ball valve body, with its head protruding above the valve body plane. The head of the positioning pin is placed in the annular notch. The butterfly operating handle can only rotate 90 degrees under the limitation of the positioning pin. When the handle is in the vertical position, the ball valve is opened to the maximum. When the handle is in the horizontal position, the ball valve is completely closed.

[0015] Preferably, the high-pressure ball valve body and the welded connecting pipe are assembled together by a joint nut. The lower end of the high-pressure ball valve body is provided with an inner cone hole, and the welded connecting pipe is provided with an outer cone head, which is pressed into the inner cone hole of the valve.

[0016] By adopting the above technical solution, the outer cone of the welded pipe is inserted into the inner cone hole of the valve at the lower end of the high-pressure ball valve body, and the mating surface is pressed with the joint nut. Compared with conventional flange or welded connection, the structure is compact and the material cost is reduced.

[0017] Preferably, a sealing groove is provided on the conical surface of the outer cone of the connecting pipe, and an O-ring C is provided in the sealing groove. The high-pressure ball valve body and the welded connecting pipe are sealed by the O-ring C.

[0018] By adopting the above technical solution, the O-ring C is pressed tightly between the inner and outer conical surfaces of the high-pressure ball valve body and the welded pipe to play a soft sealing role, further enhancing the sealing effect.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model inserts a filter element sleeve through the central through hole of a T-joint and installs it in the mounting hole of the high-pressure ball valve body. The filter element is placed inside the filter element sleeve, and the high-pressure ball valve body and the T-joint are sealed and fitted together. The filter element sleeve and filter element are integrated into the pipeline connector, and the structure of the high-pressure ball valve is optimized, thereby greatly reducing the size of the components without changing the function. All connections are adjustable in direction, making on-site installation and adjustment convenient. The required operating and maintenance space is small, and the overall cost is low.

[0021] 2. If the filter element of this utility model is damaged and impurities enter the inner cavity of the filter element sleeve, since the diameter of the oil sieve hole on the filter element sleeve is 1mm, impurities larger than 1mm will be left in the filter element sleeve and will not enter the rear lubrication distribution element, thus not causing significant damage to the lubrication distribution element.

[0022] 3. The T-end of the T-type connector of this utility model is equipped with an oil outlet connector by passing a wire nut; the cylindrical section of the oil outlet connector is provided with an annular groove, and a wire ring is set in the annular groove. The wire nut is limited on the oil outlet connector by the wire ring and can only rotate flexibly but cannot move back and forth. If it is necessary to adjust the oil inlet direction of the oil inlet component, simply loosen the wire nut, adjust the oil inlet component to the appropriate direction, and then tighten the wire nut again. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the present utility model;

[0024] Figure 2 This is a structural diagram of the filter element sleeve of this utility model;

[0025] Figure 3 This is a structural diagram of the filter element of this utility model;

[0026] Figure 4 This is a side view of the present invention.

[0027] Drawing numbers: 1. Oil outlet connector, 2. Wire thread nut, 3. Wire ring, 4. O-ring A, 5. T-connector, 6. Filter element sleeve, 7. O-ring B, 8. Filter element, 9. Sealing gasket, 10. High-pressure ball valve body, 11. Butterfly operating handle, 12. Positioning pin, 13. Connector nut, 14. O-ring C, 15. Welded connecting pipe, 16. Mounting part, 17. Groove part, 18. Oil passage screen hole, 19. Disassembly part, 20. Assembly hole, 21. Filter screen, 22. Assembly piece, 23. Mounting hole, 24. Valve inner cone hole, 25. Angled hole, 26. Connecting pipe outer cone head, 27. O-ring seal groove, 28. Slotted groove. Detailed Implementation

[0028] like Figure 1 As shown, a compact lubrication inlet assembly includes a high-pressure ball valve body 10, a T-shaped connector 5 stacked on the high-pressure ball valve body 10, and a filter element sleeve 6 passing through the central through hole of the T-shaped connector 5. Figure 2 As shown, the bottom of the filter element sleeve 6 is the mounting part 16, and above the mounting part 16 is the groove part 17, with oil screen holes 18 evenly distributed in the groove part 17; above the groove part 17 is the O-ring sealing groove 27; an O-ring sealing ring B7 is installed in the O-ring sealing groove 27; above the O-ring sealing groove 27 is the disassembly part 19. The mounting part 16 and the mounting hole 23 on the high-pressure ball valve body 10 are screwed together, and a sealing gasket 9 is placed between the T-joint 5 and the high-pressure ball valve body 10. The interior of the filter element sleeve 6 is stepped, with the assembly hole 20 at the bottom of the stepped holes, and the filter element 8 is installed in the filter element sleeve 6. Figure 3As shown, the filter element 8 is mainly composed of a cylindrical filter screen 21 connected to the bottom assembly 22. The assembly 22 and the assembly hole 20 are screwed together. The upper end of the high-pressure ball valve body 10 is provided with an installation hole 23, and the installation part 16 is set in the installation hole 23. In this application, the filter element sleeve 6 is passed through the middle through hole of the T-type connector 5 and installed in the installation hole 23 of the high-pressure ball valve body 10. The filter element 8 is set in the filter element sleeve 6. The high-pressure ball valve body 10 and the T-type connector 5 are sealed and fitted together. The filter element sleeve and filter element are integrated into the pipeline connector. The structure of the high-pressure ball valve is optimized, thereby greatly reducing the volume of the components without changing the function. All connections are adjustable in direction, which makes on-site installation and adjustment convenient. The required operation and maintenance space is small and the overall cost is low.

[0029] The oil outlet connector 1 has a threaded left end for connection to the oil inlet of a lubrication distribution element (dual-line distributor, single-line distributor, intelligent oil distribution tank). The right end has a 24° external cone with an O-ring groove on its surface. The rear cylindrical section has an annular groove. A wire nut 2 is fitted onto the right end of the oil outlet connector 1. The wire nut 2 has a slanted hole 25 at the corresponding position of the annular groove in the cylindrical section of the connector 1. A piece of steel wire, slightly smaller in diameter than the slanted hole 25, is threaded through the hole and forms a circular wire ring 3 within the annular groove of the cylindrical section of the connector 1. The wire nut 2 is confined to the oil outlet connector 1 by the wire ring 3, allowing only rotation but not forward or backward movement. An O-ring seal A4 is installed within the O-ring groove on the conical surface of the oil outlet connector 1. The T-type connector 5 has a through hole in the middle and an external thread at the T end, with the thread specification matching the internal thread of the wire nut 2. The thread has a 24° T-end inner conical hole, forming a sealing fit with the 24° external cone at the right end of the oil outlet connector 1. The mating surfaces are pressed together by the wire nut 2, and the O-ring A4 is tightly pressed between the inner and outer conical surfaces, providing a soft seal and further enhancing the sealing effect. The bottom of the filter element sleeve 6 is the mounting part 16, which has an external thread. Above the external thread is a groove 17, on which a series of 1mm diameter oil passage holes 18 are evenly distributed. An O-ring sealing groove 27 is located at the top of the groove 17. An O-ring sealing ring B7 is installed in the O-ring sealing groove 27, sealing the filter element sleeve 6 and the middle through hole of the T-type connector 5 through the O-ring sealing ring B7. The top is the disassembly part 19, which is an external hexagonal part. The filter element sleeve 6 has a stepped hole inside, with an assembly hole 20 at the bottom. The assembly hole 20 is an internally threaded hole. The stainless steel filter element 8 is welded from a cylindrical stainless steel filter screen 21 to a bottom assembly part 22. The assembly part 22 is a threaded sleeve, and the external thread specification of the threaded sleeve is consistent with the internal thread of the filter element sleeve 6. The threaded sleeve has a slot 28 for tightening with a flathead screwdriver. The stainless steel filter element 8 is screwed into the stepped hole inside the filter element sleeve 6 through the threaded sleeve. The upper end of the high-pressure ball valve body 10 has a mounting hole 23, which is an internally threaded hole with the same thread specification as the external thread at the bottom of the filter element sleeve 6. The filter element sleeve 6 passes through the through hole in the middle of the T-joint 5 and the sealing gasket 9, and the bottom thread is screwed into the internal thread hole at the upper end of the high-pressure ball valve body 10. After installation, the top of the filter element sleeve 6 forms a seal with the through hole in the middle of the T-joint 5 through the O-ring seal B7, and the bottom end face of the T-joint 5 forms a seal with the upper end face of the high-pressure ball valve body 10 through the sealing gasket 9.The lower end of the high-pressure ball valve body 10 has an external thread, and the thread has a 24° valve inner cone hole 24. The head of the welded pipe 15 is a 24° pipe outer cone head 26, and a sealing groove is opened on the outer cone surface. An O-ring seal C14 is installed in the sealing groove. The 24° pipe outer cone head 26 of the welded pipe 15 is inserted into the valve inner cone hole 24 at the lower end of the high-pressure ball valve body 10. The high-pressure ball valve body 10 and the welded pipe 15 are assembled together by a joint nut 13, and the mating surfaces are pressed together by the joint nut 13. Compared with conventional flange or welded connection, the structure is compact and the material cost is reduced. The O-ring seal C14 is pressed tightly between the inner and outer cone surfaces to play a soft sealing role, which further enhances the sealing effect.

[0030] like Figure 4 As shown, the positioning pin 12 is installed in the positioning hole on the front of the high-pressure ball valve body 10, with its head protruding above the valve body plane. The butterfly operating handle 11 is connected and fixed to the central rotating shaft of the high-pressure ball valve body 10. The bottom of the butterfly operating handle 11 has a 90-degree annular notch, and the head of the positioning pin 12 is placed inside the annular notch. In this way, the butterfly operating handle 11 can only rotate 90 degrees under the limitation of the positioning pin. When the handle is in a vertical position, the ball valve is fully opened; when the handle is in a horizontal position, the ball valve is completely closed. This application saves operating space by installing a butterfly operating handle 11 on the high-pressure ball valve body 10, with the butterfly operating handle 11 using a 90-degree annular notch structure to cooperate with the positioning pin 12.

[0031] In use, weld the welded connector 15 of the compact lubrication inlet assembly to the main oil supply pipe, and connect the oil outlet connector 1 to the oil inlet of the lubrication distribution element. Under normal use, adjust the butterfly operating handle 11 to the vertical position, and the high-pressure ball valve body 10 is in the open position. Lubricant enters the inner cavity of the stainless steel filter element 8 through the high-pressure ball valve body 10. After being filtered by the stainless steel filter screen 21, it enters the inner cavity of the filter element sleeve 6 and passes through the oil passage 18 into the inner cavity of the T-connector 5. It is then supplied to the rear lubrication distribution element through the internal through-hole from the oil outlet connector 1. All dirt in the lubricant remains in the inner cavity of the stainless steel filter element 8. If cleaning or replacing the stainless steel filter element 8 is required, adjust the butterfly operating handle 11 to the horizontal position, completely close the high-pressure ball valve body 10, use a six-way wrench to unscrew the filter element sleeve 6 from the high-pressure ball valve body 10, and then use a flathead screwdriver to unscrew the stainless steel filter element 8 from the filter element sleeve 6. If the stainless steel filter element 8 becomes clogged due to excessive impurities in the pipeline or prolonged lack of cleaning, the stainless steel filter element 8 may be damaged due to excessive pressure difference between the inside and outside of the filter element. Impurities remaining in the filter element may enter the inner cavity of the filter element sleeve 6. Since the oil passage hole 18 on the filter element sleeve 6 has a diameter of 1mm, impurities larger than 1mm will remain in the filter element sleeve 6 and will not enter the rear lubrication distribution element, thus preventing significant damage to the lubrication distribution element.

[0032] If the oil inlet direction of the oil inlet assembly needs to be adjusted during installation or use, simply loosen the wire nut 2, adjust the oil inlet assembly to the appropriate direction, and then tighten the wire nut 2 again. Similarly, if the orientation of the butterfly operating handle 11 on the ball valve needs to be adjusted, simply loosen the filter element sleeve 6, adjust the ball valve to the appropriate position, and then tighten the filter element sleeve 6 again.

[0033] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A compact lubrication inlet assembly, comprising a high-pressure ball valve body (10), characterized in that: T-type connectors (5) are stacked on the high-pressure ball valve body (10), and filter element sleeves (6) are inserted through the T-type connectors (5); the bottom of the filter element sleeve (6) is a mounting part (16), and the top of the mounting part (16) is a groove part (17), with oil screen holes (18) evenly distributed in the groove part (17); the top of the groove part (17) is an O-ring sealing groove (27), in which O-ring sealing rings B (7) are installed, and the top of the O-ring sealing groove (27) is a disassembly part (19); the T-type connectors (5) are stacked on the ball valve body (10), and filter element sleeves (6) are inserted through the T-type connectors (5). A sealing gasket (9) is placed between the filter sleeve (6) and the high-pressure ball valve body (10); the filter sleeve (6) has a stepped hole inside, and the bottom of the stepped hole is an assembly hole (20). A filter element (8) is set in the filter sleeve (6); the filter element (8) is mainly composed of a cylindrical filter screen (21) connected to the bottom assembly (22). The assembly (22) and the assembly hole (20) are screwed together; the high-pressure ball valve body (10) has an installation hole (23) at the upper end, and the installation part (16) is screwed into the installation hole (23).

2. A compact lubrication inlet assembly according to claim 1, characterized in that: The diameter of the oil sieve hole (18) is 1 mm.

3. A compact lubrication inlet assembly according to claim 1, characterized in that: The T-end of the T-type connector (5) is installed with an oil outlet connector (1) through a wire nut (2). The cylindrical section of the oil outlet connector (1) is provided with an annular groove, and a wire ring (3) is provided in the annular groove. The wire nut (2) is provided with an oblique hole (25) at the corresponding position of the annular groove. During assembly, the wire passes through the oblique hole (25) into the annular groove to form a wire ring (3).

4. A compact lubrication inlet assembly according to claim 3, characterized in that: The oil outlet connector (1) has an O-ring groove on its outer conical surface and an O-ring seal A (4) is provided in the O-ring groove. The T-end of the T-type connector (5) has an inner conical hole. The oil outlet connector (1) and the T-end of the T-type connector (5) are sealed and connected by the O-ring seal A (4).

5. A compact lubrication inlet assembly according to claim 1, characterized in that: A butterfly-shaped operating handle (11) is installed on the central rotating shaft of the high-pressure ball valve body (10). A 90-degree annular notch is opened at the bottom of the butterfly-shaped operating handle (11), and a positioning pin (12) is set in the 90-degree annular notch. The positioning pin (12) is installed in the positioning hole on the front of the high-pressure ball valve body (10).

6. A compact lubrication inlet assembly according to claim 1, characterized in that: The high-pressure ball valve body (10) and the welded pipe (15) are assembled together by a connector nut (13). The lower end of the high-pressure ball valve body (10) is provided with an inner cone hole (24), and the welded pipe (15) is provided with an outer cone head (26). The outer cone head (26) is pressed into the inner cone hole (24).

7. A compact lubrication inlet assembly according to claim 6, characterized in that: A sealing groove is provided on the conical surface of the outer cone head (26) of the connecting pipe, and an O-ring seal C (14) is provided in the sealing groove. The high-pressure ball valve body (10) and the welded connecting pipe (15) are sealed by the O-ring seal C (14).

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