Modular dosing single line dispenser

Abstract

The application belongs to the technical field of dispensers, and specifically discloses a modular quantitative single-line dispenser, which comprises a starting mounting base, a terminal mounting base, valve seats and a permanent magnet trigger type sensor, the number of the valve seats is set to be multiple, the multiple valve seats are arranged between the starting mounting base and the terminal mounting base, every two adjacent valve seats are connected through threads, the outermost two valve seats are respectively connected with the starting mounting base and the terminal mounting base through threads, and the inside of the multiple valve seats is respectively provided with a valve core assembly. Through the arrangement of the indicating rod and the dustproof sleeve, when the valve core assembly works, the indicating rod can follow the linear reciprocating motion of the control piston, when the piston stops moving due to jamming or internal leakage, the indicating rod immediately stops moving, at this time, maintenance personnel can determine the state of the valve core assembly by observing the indicating rod inside the dustproof sleeve, so that the maintenance personnel can complete the judgment of the working state of a single dispenser and the positioning of faults within seconds without disassembling the equipment.

Description

Technical Field

[0001] This invention belongs to the field of distributor technology, and specifically relates to a modular quantitative single-line distributor. Background Technology

[0002] Distributors are the most common end products in lubrication systems. Different types of distributors have been developed to suit different lubrication systems, including single-line distributors, dual-line distributors, and progressive distributors. The main difference lies in the number of oil inlet lines and their relationship to the lubrication points.

[0003] The single-line distributor uses a spring for energy storage and reset. By controlling the volume of different cavities, the pressure within those cavities is changed, thus hydraulically driving the piston rod. During piston rod movement, the spring stores energy, and the piston alters the connection and disconnection of the cavities, thereby changing the cavity pressure. This causes the oil injection piston to move under the pressure difference, achieving oil discharge. After this process is complete, stopping the pressure releases the stored elastic potential energy of the spring, returning the piston to its original state. Each oil outlet of the single-line distributor corresponds to an independent piston and spring assembly, meaning that damage to a single lubrication point does not affect the continued operation of other lubrication points.

[0004] To counteract the spring force, the system requires high starting pressure and thorough depressurization. Under repeated high-pressure working conditions, the spring is at risk of fatigue fracture. Once fractured, the lubrication point will fail. However, in existing technologies, it is inconvenient to sense and determine the status of the distributor after it is damaged, which may result in the distributor being damaged without timely detection. At the same time, existing technologies usually require disassembling the pipeline to replace the damaged parts, which is inconvenient for quick replacement. To address the above problems, how to design a modular quantitative single-line distributor has become the problem we need to solve. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a modular quantitative single-line distributor.

[0006] To achieve the above objectives, the present invention provides a modular quantitative single-line distributor, including a starting mounting base, a ending mounting base, valve seats, and a permanent magnet trigger sensor. The number of valve seats is set to multiple, and the multiple valve seats are disposed between the starting mounting base and the ending mounting base. Every two adjacent valve seats are connected by threads. The two outermost valve seats are respectively connected to the starting mounting base and the ending mounting base by threads. Each of the multiple valve seats is provided with a valve core assembly inside.

[0007] In the above technical solution, the valve core assembly further includes a valve core disposed inside the valve seat, a dust cover fixedly connected to the top of the valve core, an indicator sleeve and a gasket arranged sequentially from top to bottom inside the valve core, a metering sleeve connected to the outer wall of the valve core by threads, the metering sleeve being threaded into the inside of the valve seat, and an indicator rod inserted into the inside of the indicator sleeve and the gasket.

[0008] In the above technical solution, the indicator rod is further inserted into the valve core, the bottom of the indicator sleeve abuts against a spring, the end of the spring away from the indicator sleeve abuts against the outer wall of the end step of the indicator rod, and a retaining spring is provided on the bottom inner wall of the indicator rod.

[0009] In the above technical solution, a control piston is further provided at the bottom of the indicator rod, and an oil injection piston is sleeved on the outer wall of the valve core, with the oil injection piston located inside the valve seat.

[0010] In the above technical solution, an O-ring is provided between the dust cover and the valve core, an ED gasket is provided between the valve core and the indicator sleeve, and a nylon gasket and an oil seal are provided between the gasket and the indicator rod.

[0011] In the above technical solution, the outer wall of the valve core is further provided with a second sealing ring groove, a third sealing ring groove and a first sealing ring groove from top to bottom. The first valve core sealing ring is inserted into the second sealing ring groove, the second valve core sealing ring is inserted into the third sealing ring groove, and a retaining ring is inserted into the first sealing ring groove.

[0012] In the above technical solution, the valve core is further provided with a main oil passage inside, and the valve core is provided with an oil outlet, an oil storage port and an oil inlet from top to bottom. The main oil passage is connected to the oil outlet, the oil storage port and the oil inlet, and the control piston is inserted into the main oil passage.

[0013] In the above technical solution, the outer wall of the oil injection piston is provided with a fourth sealing ring groove and a sixth sealing ring groove, the inside of the oil injection piston is provided with a fifth sealing ring groove, a first oil injection piston sealing ring is inserted into the inside of the fourth sealing ring groove, a second oil injection piston sealing ring is inserted into the inside of the fifth sealing ring groove, and a third oil injection piston sealing ring is inserted into the inside of the sixth sealing ring groove.

[0014] In the above technical solution, after the valve core is inserted into the inside of the valve seat, an oil outlet chamber, an oil storage chamber and an oil inlet chamber are formed between the valve core and the valve seat from top to bottom. The valve seat has an exhaust port inside. The oil outlet chamber is connected to the oil outlet port, the oil storage chamber is connected to the oil storage port, and the oil inlet chamber is connected to the oil inlet port.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By using the indicator rod and dust cover, when the valve core assembly is working, the indicator rod can follow the control piston in a linear reciprocating motion. When the piston stops moving due to jamming or internal leakage, the indicator rod will stop moving. At this time, maintenance personnel can determine the status of the valve core assembly by observing the indicator rod inside the dust cover. This allows maintenance personnel to determine the working status of a single distributor and locate the fault within seconds without disassembling the equipment. The valve seat and valve core assembly work together to achieve quantitative distribution of lubrication points. During use, if a single lubrication point distributor is damaged, only the valve core assembly needs to be replaced. There is no need to disassemble the entire lubrication pipeline or scrap the entire distributor. This makes it convenient for maintenance personnel to replace damaged parts and improves the efficiency of maintenance personnel in repairing distributors. By using a threaded connection between the starting mounting base, valve seat, and ending mounting base, additional lubrication points can be added without disassembling the existing pipeline. Simply remove the ending mounting base and connect the new valve seat in parallel. This allows for easy adjustment of the number of lubrication points according to usage requirements, thus expanding the distributor's applicability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a cross-sectional view of the valve core assembly structure proposed in this invention; Figure 3 This is a cross-sectional view of the valve core assembly and dust cover mating structure proposed in this invention; Figure 4 This is a cross-sectional view of the oil injection piston structure proposed in this invention; Figure 5 This is a partially enlarged view of the valve core assembly and valve seat mating structure proposed in this invention; Figure 6 This is an enlarged view of a partial structure of the valve core assembly proposed in this invention; Figure 7 This is a schematic diagram of the valve core assembly and permanent magnet trigger sensor structure proposed in this invention.

[0017] Figure label: 1. Starting mounting base; 2. Valve seat; 3. Ending mounting base; 4. Valve core assembly; 30. Exhaust port; 40. Dust cover; 41. Valve core; 42. Indicator sleeve; 43. Gasket; 44. Metering sleeve; 45. Indicator rod; 46. Spring; 47. Snap ring; 48. Control piston; 49. Oil injection piston; 50. Retaining ring; 51. O-ring seal; 52. ED gasket; 53. Nylon gasket; 54. Oil seal; 55. First valve core seal ring; 56. Second valve core seal ring; 57. First oil injection piston seal ring; 58. Second oil injection piston seal ring; 59. Third oil injection piston seal ring; 60. Permanent magnet trigger sensor; 500, First sealing ring groove; 550, Second sealing ring groove; 560, Third sealing ring groove; 570, Fourth sealing ring groove; 580, Fifth sealing ring groove; 590, Sixth sealing ring groove; 6, Main oil passage; 7, Oil outlet; 8, Oil reservoir; 9, Oil inlet; 70, Oil outlet chamber; 80, Oil reservoir chamber; 90, Oil inlet chamber. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1, such as Figures 1 to 6 The modular quantitative single-line distributor shown includes a starting mounting base 1, a ending mounting base 3, valve seats 2, and a permanent magnet trigger sensor 60. The number of valve seats 2 is set to multiple, and the multiple valve seats 2 are arranged between the starting mounting base 1 and the ending mounting base 3. Every two adjacent valve seats 2 are connected by threads. The two outermost valve seats 2 are respectively connected to the starting mounting base 1 and the ending mounting base 3 by threads. Each of the multiple valve seats 2 is provided with a valve core assembly 4 inside. By deconstructing the distributor into independent physical modules such as the starting mounting base 1, valve seat 2, ending mounting base 3, and valve core assembly 4, the modules can be detachably combined with the sealing surface through standardized interfaces. When the valve core assembly 4 is worn, the faulty module can be quickly disassembled and replaced without disassembling the pipeline or scrapping the entire distributor, which greatly reduces the cost of single maintenance and downtime. The initial mounting base 1 is used to connect the oil pipeline to ensure that lubricating oil can enter the valve seat 2 and the valve core assembly 4. Among them, the valve seat 2 and the valve core assembly 4 work together to achieve the function of quantitative distribution of lubrication points. In the process of use, if a single lubrication point distributor is damaged, only the valve core assembly 4 needs to be replaced. There is no need to disassemble the entire lubrication pipeline or scrap the entire distributor. This makes it convenient for maintenance personnel to replace damaged parts and improves the efficiency of maintenance personnel in repairing distributors. The system features a threaded connection between the starting mounting base 1, valve seat 2, and ending mounting base 3. If additional lubrication points are needed, the existing pipeline can be removed without disassembling the original pipes. Only the ending mounting base 3 needs to be removed to connect the new valve seat 2 in parallel. This allows for easy adjustment of the number of lubrication points according to usage requirements, thereby expanding the applicability of the distributor.

[0020] The valve core assembly 4 includes a valve core 41 disposed inside the valve seat 2. A dust cover 40 is fixedly connected to the top of the valve core 41. An indicator sleeve 42 and a gasket 43 are sequentially arranged from top to bottom inside the valve core 41. A metering sleeve 44 is threadedly connected to the outer wall of the valve core 41 and is threaded into the inside of the valve seat 2. An indicator rod 45 is inserted into the inside of the indicator sleeve 42 and the gasket 43, and is inserted into the inside of the valve core 41. A spring 46 abuts against the bottom of the indicator sleeve 42, and the end of the spring 46 away from the indicator sleeve 42 abuts against the outer wall of the end step of the indicator rod 45. A retaining ring 47 is provided on the inner wall of the bottom of the rod 45. A control piston 48 is provided at the bottom of the indicator rod 45. An oil injection piston 49 is sleeved on the outer wall of the valve core 41 and is located inside the valve seat 2. An O-ring 51 is provided between the dust cover 40 and the valve core 41. An ED gasket 52 is provided between the valve core 41 and the indicator sleeve 42. A nylon gasket 53 and an oil seal 54 are provided between the gasket 43 and the indicator rod 45. A second sealing ring groove 550, a third sealing ring groove 560 and a first sealing ring groove 500 are sequentially opened on the outer wall of the valve core 41 from top to bottom. The second sealing ring groove 550 is inserted into the inner wall of the valve core 41. A first valve core sealing ring 55 is provided. A second valve core sealing ring 56 is inserted into the third sealing ring groove 560. A retaining ring 50 is inserted into the first sealing ring groove 500. A main oil passage 6 is provided inside the valve core 41. An oil outlet 7, an oil reservoir 8, and an oil inlet 9 are provided inside the valve core 41 from top to bottom. The main oil passage 6 is connected to the oil outlet 7, the oil reservoir 8, and the oil inlet 9. A control piston 48 is inserted into the main oil passage 6. A fourth sealing ring groove 570 and a sixth sealing ring groove 590 are provided on the outer wall of the oil injection piston 49. A fifth sealing ring groove 590 is provided inside the oil injection piston 49. 80. The first oil injection piston seal ring 57 is inserted into the inside of the fourth sealing ring groove 570, the second oil injection piston seal ring 58 is inserted into the inside of the fifth sealing ring groove 580, and the third oil injection piston seal ring 59 is inserted into the inside of the sixth sealing ring groove 590. After the valve core 41 is inserted into the inside of the valve seat 2, the valve core 41 and the valve seat 2 will form an oil outlet chamber 70, an oil storage chamber 80 and an oil inlet chamber 90 from top to bottom. The valve seat 2 has an exhaust port 30 inside. The oil outlet chamber 70 is connected to the oil outlet 7, the oil storage chamber 80 is connected to the oil storage port 8, and the oil inlet chamber 90 is connected to the oil inlet port 9. The dust cover 40 is made of transparent material, so that after the indicator rod 45 is pushed by the control piston 48, the maintenance personnel can observe the movement trajectory of the indicator rod 45 from the outside in order to determine whether the valve core assembly 4 is damaged. Among them, the sliding mating section of valve core 41, control piston 48 and oil injection piston 49 adopts a precision small clearance design. The mating clearance is strictly controlled within a size range that is much smaller than the typical hard particle size in the lubricating medium, forming a physical barrier that prevents solid particles and wear debris with diameters exceeding the clearance threshold from entering the mating clearance between the piston and the valve body hole. This fundamentally eliminates the squeezing, rolling or cutting action of particles on the moving pair surface, thereby avoiding damage to the valve core assembly by solid particles. Relying on the active interception anti-contamination mechanism, the distributor's dependence on the cleanliness of the medium is greatly reduced, and the effective life of the product is extended. Among them, the coordination effect between the main oil passage 6, oil outlet 7, oil storage port 8 and oil inlet 9 and the control piston 48 is an important factor affecting the oil output effect of the product. When valve seat 2 and valve core 41 are connected, three cavities are formed between valve seat 2 and valve core 41: oil outlet cavity 70, oil storage cavity 80, and oil inlet cavity 90. Among them, the valve seat 2 and the valve core 41 are connected by the metering sleeve 44. By selecting different specifications of metering sleeve 44, the stroke of the oil injection piston 49 can be changed, thereby affecting the volume of the oil storage chamber 80, so as to control the oil discharge volume. The vent 30 is designed for the movement of the oil injection piston 49 to prevent negative pressure or air compression from hindering hydraulic drive. At the same time, if there is oil leakage at the vent 30, it can also indicate that the sealing ring has failed and needs to be repaired or replaced.

[0021] Specifically, in the initial state, the spring 46 has no deformation. Lubricating oil enters from the oil inlet of the valve seat 2, filling the oil reservoir 80. At this time, the oil inlet 90 of the valve core 41 is connected to the oil reservoir 80 through the gap between the middle part of the control piston 48 and the main oil passage 6. The lower area of ​​the control piston 48 is much smaller than the difference between the upper and lower areas of the oil injection piston 49. At the same time, the upper surface area of ​​the oil injection piston 49 is larger than the lower surface area. After the lubricating oil fills the interior of the oil reservoir 80, the combined oil pressure of the lubricating oil is downward, causing the lubricating oil to push the oil injection piston 49 downward until it stops at the end of its stroke. This increases the volume of the oil reservoir 80 and fills it with lubricating oil. At this time, the oil injection piston 49 cannot move downward, causing the lubricating oil inside the oil reservoir 80 to start continuously entering the oil inlet 90 through the gap between the middle part of the control piston 48 and the main oil passage 6 and begin to be pressurized. The oil pressure pushes the control piston 48... 8 moves upward. During this process, the control piston 48 changes its position inside the main oil circuit 6, disconnecting the connection between the oil inlet chamber 90 and the oil storage chamber 80. The oil storage chamber 80 and the oil outlet chamber 70 are then connected through the oil storage port 8, the oil outlet port 7, and the gap between the control piston 48 and the main oil circuit 6. Since the distributor is the end product of the lubrication system, there is no pressure multiplication at the oil outlet port 7. At this time, the oil injection piston 48 is only subjected to the upward pressure of the oil pressure. The oil injection piston 48 moves upward, pushing out the lubricating oil in the oil storage chamber 80, allowing the lubricating oil to be discharged through the oil storage port 8, the oil outlet port 7, and the gap between the control piston 48 and the main oil circuit 6. It should be noted that since the oil inlet chamber 90 needs to maintain a certain oil pressure to push the control piston 48 during the oil discharge process, it needs to be used in conjunction with a hydraulic directional valve. The oil inlet pipe is not in a continuous oil inlet state, so the amount of oil entering the valve seat 2 each time must be much greater than the set discharge volume of the oil in the oil storage chamber 80. Furthermore, when the control piston 48 is pushed upward, it will push the indicator rod 45 to move and compress the spring 46 to store elastic potential energy. When the oil inlet 90 stops supplying oil, the elastic potential energy stored in the spring 46 will drive the indicator rod 45 and the control piston 48 to reset, completing one oil discharge cycle. It should be noted that the spring 46 is an important part of controlling the opening pressure. Only when the oil pressure on the control piston 48 is large enough for the control piston 48 to compress the spring 46 to connect the oil storage chamber 80 and the oil outlet chamber 90 can the distributor discharge oil smoothly. The indicator rod 45 reciprocates with the movement of the control piston 48, which can reflect the working state of the control piston 48 so as to determine the state of the valve core assembly 4.

[0022] Example 2, as follows Figure 7As shown, the dust cover 40 in the valve core assembly 4 can be replaced with a permanent magnet trigger sensor 60. By accurately setting the position of the trigger point, when the oil outlet is opened and the oil outlet chamber is connected to the oil outlet chamber, the upper end of the indicator rod is connected to the trigger point. The sensor assembly sends a signal. When the valve core assembly 4 malfunctions, the permanent magnet trigger sensor 60 can transmit the signal of the valve core assembly 4 malfunction to the maintenance personnel, so that the maintenance personnel can complete the fault location without disassembling the equipment, which is convenient for the maintenance personnel to replace or repair the valve core assembly 4 in a timely manner.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A modular quantitative single-line distributor, comprising a starting mounting base (1), an ending mounting base (3), a valve seat (2), and a permanent magnet trigger sensor (60), characterized in that, The number of valve seats (2) is set to multiple, and the multiple valve seats (2) are arranged between the starting mounting base (1) and the ending mounting base (3). Each pair of adjacent valve seats (2) are connected by threads. The two outermost valve seats (2) are respectively connected to the starting mounting base (1) and the ending mounting base (3) by threads. The valve core assembly (4) is provided inside the multiple valve seats (2).

2. The modular quantitative single-line distributor according to claim 1, characterized in that, The valve core assembly (4) includes a valve core (41) disposed inside the valve seat (2). A dust cover (40) is fixedly connected to the top of the valve core (41). An indicator sleeve (42) and a gasket (43) are arranged sequentially from top to bottom inside the valve core (41). A metering sleeve (44) is threadedly connected to the outer wall of the valve core (41). The metering sleeve (44) is threadedly connected to the inside of the valve seat (2). An indicator rod (45) is inserted into the inside of the indicator sleeve (42) and the gasket (43).

3. A modular quantitative single-line distributor according to claim 2, characterized in that, The indicator rod (45) is inserted into the valve core (41), and the bottom of the indicator sleeve (42) abuts against a spring (46). The end of the spring (46) away from the indicator sleeve (42) abuts against the outer wall of the end step of the indicator rod (45), and the bottom inner wall of the indicator rod (45) is provided with a retaining spring (47).

4. A modular quantitative single-line distributor according to claim 2, characterized in that, The bottom of the indicator rod (45) is provided with a control piston (48), and the outer wall of the valve core (41) is fitted with an oil injection piston (49), which is located inside the valve seat (2).

5. A modular quantitative single-line distributor according to claim 2, characterized in that, An O-ring (51) is provided between the dust cover (40) and the valve core (41), an ED gasket (52) is provided between the valve core (41) and the indicator sleeve (42), and a nylon gasket (53) and an oil seal (54) are provided between the gasket (43) and the indicator rod (45).

6. A modular quantitative single-line distributor according to claim 2, characterized in that, The outer wall of the valve core (41) is provided with a second sealing ring groove (550), a third sealing ring groove (560) and a first sealing ring groove (500) from top to bottom. The first valve core sealing ring (55) is inserted into the second sealing ring groove (550), the second valve core sealing ring (56) is inserted into the third sealing ring groove (560), and the retaining ring (50) is inserted into the first sealing ring groove (500).

7. A modular quantitative single-line distributor according to claim 2, characterized in that, The valve core (41) has a main oil passage (6) inside. The valve core (41) has an oil outlet (7), an oil storage port (8) and an oil inlet (9) in sequence from top to bottom. The main oil passage (6) is connected to the oil outlet (7), the oil storage port (8) and the oil inlet (9). The control piston (48) is inserted into the main oil passage (6).

8. A modular quantitative single-line distributor according to claim 4, characterized in that, The outer wall of the oil injection piston (49) is provided with a fourth sealing ring groove (570) and a sixth sealing ring groove (590). The inner wall of the oil injection piston (49) is provided with a fifth sealing ring groove (580). A first oil injection piston sealing ring (57) is inserted into the inner wall of the fourth sealing ring groove (570). A second oil injection piston sealing ring (58) is inserted into the inner wall of the fifth sealing ring groove (580). A third oil injection piston sealing ring (59) is inserted into the inner wall of the sixth sealing ring groove (590).

9. A modular quantitative single-line distributor according to claim 7, characterized in that, After the valve core (41) is inserted into the valve seat (2), the valve core (41) and the valve seat (2) will form an oil outlet chamber (70), an oil storage chamber (80) and an oil inlet chamber (90) from top to bottom. The valve seat (2) has an exhaust port (30) inside. The oil outlet chamber (70) is connected to the oil outlet (7), the oil storage chamber (80) is connected to the oil storage port (8), and the oil inlet chamber (90) is connected to the oil inlet port (9).

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