Pressure relief type lubricating oil quantitative distributor

Abstract

The utility model relates to a pressure relief type lubricating oil quantitative distributor which comprises an outer shell of the distributor, the outer shell is composed of a transverse cylindrical base and a plurality of vertical flow dividing pipes, pipe joints are formed at the two ends of the base respectively, and oil inlet hole channels communicated with the pipe joints at the two ends are formed in the base. An upper valve seat communicated with the upper end of the shunting pipe and the oil inlet hole channel is formed at the upper part of the base on the inner side of the shunting pipe; an umbrella-shaped valve is inserted into the upper valve seat; a limiting boss is formed at the lower part of the base on the inner side of the shunting pipe; an oil storage channel communicated with the upper end and the lower end of the shunting pipe is formed on the base on the front and rear sides of the upper valve seat and the limiting boss; the upper end of the flow dividing pipe is in threaded connection with a distribution connector, an oil outlet mouthpiece is formed at the lower end of the distribution connector, and the lower portion of the oil outlet mouthpiece abuts against the middle of the umbrella-shaped valve. According to the distributor, the structure of the piston part is optimized, rectified and modified, the structure of a sealing piece is changed, effective sealing can be guaranteed, and meanwhile assembly of components is facilitated.

Description

Technical fields:

[0001] This utility model relates to the technical field of distributors, and more specifically to a pressure-relief lubricating oil metering distributor. Background technology:

[0002] Centralized lubrication systems are now widely used in vehicles and engineering equipment. These systems provide lubrication to various lubrication points on a timed and quantitative basis. The lubrication cycle and frequency are controlled by the lubrication pump station, while the lubrication quantity is controlled by a metering distributor. Currently, the commonly used distributors in lubrication systems are progressive distributors and pressure relief lubrication distributors. Although progressive distributors are reliable and easy to test, their complex structure and high manufacturing standards make them more expensive and prone to failure. The pressure-relief oil supply distributor uses a rubber umbrella valve. During oil storage and injection, the movement of the umbrella valve is controlled by oil pressure. However, the existing distributor has a piston for pressure relief. The upper part of the piston needs to be machined with an annular groove to install the umbrella-shaped seal. The seal moves with the piston to achieve pressure relief output of lubricating oil. The umbrella seal needs to be tightly fitted on the piston, otherwise oil leakage is likely to occur between the piston and the umbrella seal. However, the tight fit increases the installation difficulty of the umbrella seal and the piston. Moreover, the umbrella seal is mostly made of rubber, which is prone to aging and is a frequently replaced component, making subsequent maintenance and repair inconvenient. Therefore, this structure needs to be optimized and modified to facilitate installation while ensuring the sealing effect. Utility Model Content:

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a pressure-relief lubricating oil metering dispenser. The structure of the piston part has been optimized and modified, and the sealing structure has been changed, which can ensure effective sealing while facilitating the assembly of components.

[0004] A pressure-relief lubricating oil metering dispenser includes a distributor housing, which consists of a horizontally cylindrical base and several vertical branch pipes. The base is formed in the middle and upper parts of the branch pipes, and pipe joints are formed at both ends of the base. An oil inlet channel connected to the pipe joints at both ends is formed inside the base. An upper valve seat connected to the upper end of the branch pipe and the oil inlet channel is formed on the upper part of the base inside the branch pipe, and an umbrella valve is inserted in the upper valve seat. A limiting boss is formed on the lower part of the base inside the branch pipe, and oil storage channels connected to the upper and lower ends of the branch pipe are formed on the base in front of and behind the upper valve seat and the limiting boss.

[0005] The upper end of the diversion pipe is screwed with a distribution connector, and the lower end of the distribution connector is formed with an oil outlet nozzle, the lower part of which abuts against the middle of the umbrella valve.

[0006] A cylindrical piston is inserted into the diversion pipe on the lower side of the base, with the upper end of the piston pressing against the limiting protrusion. A pressure relief connector is located at the lower end of the diversion pipe, with an internally threaded connecting sleeve formed at its upper end. This internally threaded connecting sleeve is screwed into the diversion pipe. A positioning ring groove is formed on the inner wall of the lower part of the diversion pipe, into which a piston ring and a herringbone-shaped oil seal are inserted. The oil seal is sandwiched between the piston ring and the internally threaded connecting sleeve, with the piston ring pressing against the positioning ring. On the stepped surface between the groove and the inner hole of the diverter pipe, the outer ring of the oil seal presses against the bottom surface of the positioning ring groove, and the inner ring presses against the outer wall of the piston; the middle part of the pressure relief joint is formed with a stepped hole, and a T-shaped guide post is inserted into the stepped hole. A spring is inserted into the guide post, and the lower end of the spring presses against the stepped surface of the stepped hole and the upper end presses against the head of the guide post; the lower end face of the piston is formed with a countersunk hole, and the head of the guide post is inserted into the countersunk hole of the piston and presses against the bottom surface of the countersunk hole.

[0007] Preferably, the length of the piston is not less than half the distance between the limiting boss and the lower end face of the diverter.

[0008] Preferably, the umbrella valve includes a central cylindrical core column, an umbrella-shaped valve plate formed on the outer wall of the core column, a stepped valve hole formed on the upper valve seat, the umbrella valve is inserted into the valve hole of the upper valve seat, and the valve plate on the umbrella valve presses against the inner wall of the valve hole.

[0009] Preferably, the distribution connector has an oil outlet formed inside, which communicates with the oil outlet nozzle. The oil outlet nozzle presses against the core of the umbrella valve, and the core seal blocks the oil outlet nozzle of the distribution connector.

[0010] Preferably, a raised ring is formed on the outer wall of the upper part of the distribution joint, and a sealing ring is sleeved on the distribution joint below the raised ring, with the sealing ring clamped and fixed between the distribution joint and the diversion pipe.

[0011] Preferably, a retaining ring is formed on the outer wall of the pressure relief connector, the retaining ring abuts against the lower end face of the diverter pipe, and the minimum diameter of the stepped hole on the pressure relief connector is greater than the diameter of the lower part of the guide post.

[0012] Preferably, dust covers are inserted into the pipe joints at both ends of the base.

[0013] Preferably, vertical mounting lugs are formed between the pipe joints at both ends of the base and between the pipe joints. The mounting lugs are located on the lower side of the pipe joints and have longitudinal mounting holes.

[0014] The beneficial effects of this utility model are as follows:

[0015] This dispenser features an optimized and redesigned piston structure, along with a modified sealing structure, ensuring effective sealing while facilitating component assembly. Attached image description:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front view of the structure of this utility model;

[0018] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure at point A-A.

[0019] In the diagram: 1. Outer shell; 11. Diverter pipe; 12. Base; 2. Distribution connector; 3. Umbrella valve; 4. Piston; 41. Countersunk hole; 5. Piston ring; 6. Oil seal; 7. Pressure relief connector; 71. Internal threaded connecting sleeve; 72. Retaining ring; 73. Stepped hole; 8. Spring; 9. Guide post; 10. Dust cover; 20. Sealing ring. Detailed implementation method:

[0020] Example: See Figures 1 to 3 As shown, a pressure-relief lubricating oil metering dispenser includes a distributor housing 1. The housing 1 consists of a horizontally cylindrical base 12 and several vertical branch pipes 11. The base 12 is formed in the middle and upper parts of the branch pipes 11. Pipe joints 121 are formed at both ends of the base 12. An oil inlet channel 122 connected to the pipe joints 121 is formed inside the base 12. An upper valve seat 123 is formed on the upper part of the base 12 inside the branch pipes 11, connecting the upper end of the branch pipes 11 and the oil inlet channel 122. An umbrella valve 3 is inserted in the upper valve seat 123. A limiting boss 124 is formed on the lower part of the base 12 inside the branch pipes 11. An oil storage channel 125 connecting the upper and lower ends of the branch pipes 11 is formed on the base 12 in front of and behind the upper valve seat 123 and the limiting boss 124.

[0021] The upper end of the diversion pipe 11 is screwed with a distribution connector 2, and the lower end of the distribution connector 2 is formed with an oil outlet nozzle 21, which abuts against the middle of the umbrella valve 3.

[0022] A cylindrical piston 4 is inserted into the diversion pipe 11 on the lower side of the base 12, and the upper end face of the piston 4 presses against the limiting boss 124. The lower end of the diversion pipe 11 is provided with a pressure relief connector 7, and the upper end of the pressure relief connector 7 is formed with an internal threaded connecting sleeve 71, which is screwed into the diversion pipe 11. A positioning ring groove 111 is formed on the inner wall of the lower part of the diversion pipe 11, and a piston ring 5 and an oil seal 6 with a "V" shaped cross section are inserted into the positioning ring groove 111. The oil seal 6 is clamped between the piston ring 5 and the internal threaded connecting sleeve 71, and the piston ring 5 presses against the positioning ring groove 111. On the stepped surface between the annular groove 111 and the inner hole of the diverter pipe 11, the outer ring of the oil seal 6 presses against the bottom surface of the positioning annular groove 111, and the inner ring presses against the outer wall of the piston 4; the middle part of the pressure relief connector 7 is formed with a stepped hole 73, a T-shaped guide post 9 is inserted into the stepped hole 73, a spring 8 is inserted into the guide post 9, the lower end of the spring 8 presses against the stepped surface of the stepped hole 73, and the upper end presses against the head of the guide post 9; the lower end face of the piston 4 is formed with a countersunk hole 41, and the head of the guide post 9 is inserted into the countersunk hole 41 of the piston 4 and presses against the bottom surface of the countersunk hole 41.

[0023] The length of the piston 4 is not less than half the distance between the limiting boss 124 and the lower end face of the diversion pipe 11. The piston 4 has sufficient length, which can increase the oil storage capacity and indirectly increase the amount of oil output.

[0024] The umbrella valve 3 includes a central cylindrical core column, an umbrella-shaped valve plate formed on the outer wall of the core column, and a stepped valve hole formed on the upper valve seat 123. The umbrella valve 3 is inserted into the valve hole of the upper valve seat 123, and the valve plate on the umbrella valve 3 presses against the inner wall of the valve hole.

[0025] The distribution connector 2 has an oil outlet that communicates with the oil outlet nozzle 21. The oil outlet nozzle 21 presses against the core of the umbrella valve 3, and the core seals the oil outlet nozzle 21 of the distribution connector 2. When oil enters the oil inlet channel 122 of the base 12, the lubricating oil causes the umbrella valve 3 to open and flow into the oil storage channel 125. However, the middle part of the umbrella valve 3 will seal the distribution connector 2 to prevent the lubricating oil from flowing out of the distribution connector 2 in the initial stage of oil entry.

[0026] A raised ring is formed on the outer wall of the upper part of the distribution joint 2, and a sealing ring 20 is sleeved on the lower side of the distribution joint 2. The sealing ring 20 is clamped and fixed between the distribution joint 2 and the diversion pipe 11, and the sealing ring 20 can improve the sealing performance.

[0027] A retaining ring 72 is formed on the outer wall of the pressure relief connector 7. The retaining ring 72 abuts against the lower end face of the diversion pipe 11. The minimum diameter of the stepped hole 73 on the pressure relief connector 7 is larger than the diameter of the lower part of the guide post 9. Exhaust and pressure stabilization can be achieved between the guide post 9 and the stepped hole 73.

[0028] Dust covers 10 are inserted into the pipe joints 121 at both ends of the base 12. When the distributor is not installed, it is protected by the dust covers 10.

[0029] Vertical mounting lugs 13 are formed between the pipe joints 121 at both ends of the base 12. The mounting lugs 13 are located on the lower side of the pipe joints 121 and have longitudinal mounting holes 131. The distributor can be installed and connected by bolts set on the mounting lugs 13.

[0030] Working principle: This structure is a pressure-relief lubricating oil metering distributor. The distributor optimizes and modifies the structure of the lower part of the distribution pipe 11.

[0031] The piston 5 is designed as a cylinder, which is easier to manufacture than the original piston with an annular groove on the top. At the same time, the umbrella-shaped seal is replaced with an oil seal 6 with a "V" shaped cross section. The oil seal 6 is clamped in the distributor by the piston ring 5 and the pressure relief joint 7, which is convenient to install and easy to replace and maintain later. At the same time, the oil seal 6 can effectively ensure the seal between the piston 5 and the distributor pipe 11.

[0032] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.

Claims

1. A pressure-relief lubricating oil metering dispenser, comprising a distributor housing (1), the housing (1) consisting of a transverse cylindrical base (12) and several vertical branch pipes (11), the base (12) being formed in the middle and upper parts of the branch pipes (11), pipe joints (121) being formed at both ends of the base (12), and oil inlet channels (122) connected to the pipe joints (121) at both ends being formed inside the base (12), characterized in that: The upper part of the base (12) inside the diverter pipe (11) is formed with an upper valve seat (123) that connects the upper end of the diverter pipe (11) and the oil inlet channel (122). An umbrella valve (3) is inserted in the upper valve seat (123). The lower part of the base (12) inside the diverter pipe (11) is formed with a limiting boss (124). The base (12) on the front and rear sides of the upper valve seat (123) and the limiting boss (124) is formed with an oil storage channel (125) that connects the upper and lower ends of the diverter pipe (11). The upper end of the diversion pipe (11) is screwed with a distribution connector (2), and the lower end of the distribution connector (2) is formed with an oil outlet nozzle (21). The lower part of the oil outlet nozzle (21) abuts against the middle part of the umbrella valve (3). A cylindrical piston (4) is inserted into the diversion pipe (11) on the lower side of the base (12), and the upper end face of the piston (4) presses against the limiting boss (124); a pressure relief connector (7) is provided at the lower end of the diversion pipe (11), and an internal threaded connecting sleeve (71) is formed at the upper end of the pressure relief connector (7), which is screwed into the diversion pipe (11); a positioning ring groove (111) is formed on the inner wall of the lower part of the diversion pipe (11), and a piston ring (5) and an oil seal (6) with a "V" shaped cross section are inserted into the positioning ring groove (111). The oil seal (6) is sandwiched between the piston ring (5) and the internal threaded connecting sleeve (71), and the piston ring (5) presses against the positioning ring groove (111). On the stepped surface between the annular groove (111) and the inner hole of the diverter pipe (11), the outer ring of the oil seal (6) presses against the bottom surface of the positioning annular groove (111), and the inner ring presses against the outer wall of the piston (4); the middle part of the pressure relief connector (7) is formed with a stepped hole (73), a T-shaped guide post (9) is inserted into the stepped hole (73), a spring (8) is inserted on the guide post (9), the lower end of the spring (8) presses against the stepped surface of the stepped hole (73), and the upper end presses against the head of the guide post (9); the lower end face of the piston (4) is formed with a countersunk hole (41), and the head of the guide post (9) is inserted into the countersunk hole (41) of the piston (4) and presses against the bottom surface of the countersunk hole (41).

2. The pressure-relief lubricating oil metering dispenser according to claim 1, characterized in that: The length of the piston (4) is not less than half the distance between the limiting boss (124) and the lower end face of the diverter (11).

3. The pressure-relief lubricating oil metering dispenser according to claim 1, characterized in that: The umbrella valve (3) includes a cylindrical core column in the middle, and an umbrella-shaped valve plate is formed on the outer wall of the core column. The upper valve seat (123) is formed with a stepped valve hole. The umbrella valve (3) is inserted into the valve hole of the upper valve seat (123), and the valve plate on the umbrella valve (3) is pressed against the inner wall of the valve hole.

4. The pressure-relief lubricating oil metering dispenser according to claim 3, characterized in that: The distribution connector (2) has an oil outlet that communicates with the oil outlet nozzle (21). The oil outlet nozzle (21) presses against the core of the umbrella valve (3), and the core seal blocks the oil outlet nozzle (21) of the distribution connector (2).

5. A pressure-relief lubricating oil metering dispenser according to claim 1, characterized in that: A raised ring is formed on the outer wall of the upper part of the distribution joint (2), and a sealing ring (20) is sleeved on the distribution joint (2) below the raised ring. The sealing ring (20) is clamped and fixed between the distribution joint (2) and the diversion pipe (11).

6. The pressure-relief lubricating oil metering dispenser according to claim 1, characterized in that: A retaining ring (72) is formed on the outer wall of the pressure relief connector (7). The retaining ring (72) abuts against the lower end face of the diversion pipe (11). The minimum diameter of the stepped hole (73) on the pressure relief connector (7) is greater than the diameter of the lower part of the guide post (9).

7. A pressure-relief lubricating oil metering dispenser according to claim 1, characterized in that: Dust covers (10) are inserted into the pipe joints (121) at both ends of the base (12).

8. A pressure-relief lubricating oil metering dispenser according to claim 1, characterized in that: Vertical mounting lugs (13) are formed between the pipe joints (121) at both ends of the base (12). The mounting lugs (13) are located on the lower side of the pipe joints (121) and have longitudinal mounting holes (131).

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