Integrated composite distributor based on pneumatic driving and oil way supply control method

Abstract

The invention discloses an integrated composite distributor based on pneumatic driving and an oil way supply control method. The distributor comprises a shell, an oil supply path, a pneumatic driving device and an oil path distribution channel, the pneumatic driving device and the oil path distribution channel are vertically arranged in the shell, a liquid one-way piston is arranged in the oil path distribution channel, and a liquid check valve is arranged at the output end of the oil path distribution channel; the air pressure driving device comprises an air driving device, an air passage hole, an upper end air valve and a lower end air valve, the air driving device comprises a cylinder barrel, a piston in the cylinder barrel and a piston rod, the air pressure driving device is connected with the liquid one-way piston through the piston rod, the liquid one-way piston is pushed by air pressure, and grease in the oil supply path is pumped into the liquid check valve to inject lubricating oil; and full-automatic control is realized. Accurate distribution and supply of an oil way are achieved through air pressure pushing, and the device has the advantages of being simple in structure, high in control precision, convenient to maintain and the like, is suitable for lubricating systems of various mechanical devices and remarkably improves the lubricating effect and the working efficiency of the devices.

Description

Technical Field

[0001] The present invention relates to the technical field of oil circuit distributors, and in particular to an integrated composite distributor driven by air pressure and an oil circuit supply control method. Background Art

[0002] Dual-line distributors have been widely used in centralized lubrication systems of mechanical equipment. However, many dual-line distributors of lubricating oil on the market currently have problems such as complex structure, low working pressure, large error in oil supply, and cumbersome operation, which can no longer meet the use requirements of modern mechanical equipment.

[0003] In order to solve these deficiencies, the Chinese utility model patent with the authorization announcement number CN202392421U provides an improved two-line distributor. This improved design has made some progress in some aspects, but it has also exposed some problems in the actual application process. In this technical solution, since the indicator rod is directly connected to the working piston, the sealing of the oil chamber in the two-line distributor body is poor. Even if a rubber sealing ring is set on the inner wall of the sliding hole, the rubber sealing ring is prone to aging in a long-term high temperature and high pressure environment, thereby affecting the working performance of the two-line distributor.

[0004] Therefore, it is necessary to design an optimized two-line distributor to develop a two-line distributor with a simpler structure, higher working pressure, more precise oil supply control, easier operation and more reliable, so as to better meet the growing use needs of modern mechanical equipment. Summary of the invention

[0005] To solve the above problems, the present invention provides an integrated composite distributor and oil circuit supply control method based on air pressure drive; the present invention realizes precise distribution and supply of the oil circuit through air pressure push, has the advantages of simple structure, high control accuracy, and convenient maintenance, is suitable for the lubrication system of various mechanical equipment, and significantly improves the lubrication effect and work efficiency of the equipment; the present invention is specifically implemented by the following technical scheme.

[0006] The present invention provides an integrated composite distributor based on air pressure drive, which comprises a shell, an oil supply oil circuit, an air pressure drive device and an oil circuit distribution channel; the oil supply oil circuit is transversely arranged in the shell, and an oil inlet and an oil outlet are arranged on the oil supply oil circuit; the air pressure drive device is vertically arranged at the center position in the shell, and the air pressure drive device comprises a gas driving device, an airway hole, an upper air valve and a lower air valve; the gas driving device comprises a cylinder, a piston in the cylinder and a piston rod, the cylinders are symmetrically distributed and divided into two groups on the left and right, each group comprises two upper and lower cylinders; the airway hole is divided into two groups on the left and right, and is used to realize the connection between the top of the upper cylinder and the bottom of the lower cylinder of each group of cylinders, and the mutual connection between the lower end air valve airway and the bottom of the lower cylinder; the upper end air valve airway and the bottom of the upper cylinder and the top of the lower cylinder of each group of cylinders are mutually connected; The oil distribution channel is arranged on the housing, and the oil distribution channel is divided into two groups, which are symmetrically arranged above and below the pneumatic drive device. A liquid one-way piston is arranged in the oil distribution channel, and the liquid one-way piston is connected to the pistons in the upper and lower cylinders of the corresponding group through a piston rod. A liquid check valve is arranged at the output end of the oil distribution channel; During operation, the lower air valve and the upper air valve take in air alternately in one direction, and the gas enters or is discharged through the airway hole. The pistons in the upper and lower cylinders of each group of cylinders move toward each other or move away from each other, so that the grease enters the oil distribution channel from the oil supply line, and the grease is pushed from the oil distribution channel to the liquid check valve to realize oil supply.

[0007] In the present invention, a strong magnet is installed on the piston rod near the liquid one-way piston, and a Hall element is installed on the liquid check valve; when working, the position change of the liquid one-way piston is detected by the Hall voltage change, so as to judge whether the liquid one-way piston has moved to the oil inlet position of the liquid check valve.

[0008] In the present invention, a plurality of narrow-upper-wide-lower-quadrangular-shaped one-way oil guide holes are provided inside the liquid one-way piston, the bottom of the one-way oil guide hole is sealed diagonally with a metal cross, a small quadrangular-shaped body is provided inside the one-way oil guide hole, the side length of the upper surface of the small quadrangular-shaped body is equal to the side length of the top end of the one-way oil guide hole, and the side length of the lower surface is greater than the side length of the top end of the one-way oil guide hole and less than the side length of the bottom end of the one-way oil guide hole.

[0009] In the present invention, the piston outer sleeve in the cylinder is provided with a wear-resistant ring and a piston sealing ring to achieve sealed contact between the piston in the cylinder and the inner wall of the cylinder; sealing rings and buffer rings are provided at the upper and lower ends of the cylinder.

[0010] In the present invention, the outer sleeve of the liquid one-way piston is provided with a wear-resistant ring and a piston sealing ring to achieve sealed contact between the liquid one-way piston and the oil distribution channel.

[0011] The present invention also provides an oil supply control method, which is implemented based on an integrated composite distributor driven by air pressure, and the specific steps are as follows: First, start the pneumatic drive device, input gas into the pneumatic drive device through the lower air valve, and the gas pushes the piston inward through the airway hole, so that the pistons in the cylinder move toward each other to the limit position, and the gas is discharged from the upper air valve; the liquid one-way piston leaves the oil distribution channel, and the grease enters the oil distribution channel; Next, the upper air valve inputs gas to the air pressure drive device, and the gas pushes the piston in the cylinder to move away from the limit position, squeezes the gas into the airway hole, and is discharged from the lower air valve; the liquid one-way piston enters the oil distribution channel, pushing the grease in the oil distribution channel into the liquid check valve, realizing a single oil supply; The continuous supply of grease is achieved through the reciprocating motion of the piston.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The pneumatic drive device of the present invention realizes the circulation of pneumatic pressure by alternately controlling the upper air valve and the lower air valve, and drives the liquid one-way piston to reciprocate in the shell to control the oil supply. The control circuit is simple and flexible. In the present invention, the liquid one-way piston is provided with an assembly hole and a one-way oil guide hole. The grease is pushed by the piston and pumped into the oil supply channel under pressure. Combined with the liquid check valve, the grease is effectively ensured to fully enter the lubricated equipment, thereby achieving uniform oil supply in multiple oil channels. The piston rod of the liquid one-way piston in the present invention is provided with a strong magnet, and the position of the liquid one-way piston is detected by a Hall element to determine whether the liquid one-way piston has moved to the oil inlet position of the liquid check valve. The single oil supply amount is fixed, and the oil supply amount each time is the volume of grease in the oil distribution channel. By supplying oil in small amounts and multiple times, precise control of the oil supply amount can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of an integrated composite dispenser driven by air pressure according to the present invention.

[0014] Figure 2 It is a schematic structural diagram of the liquid one-way piston of the present invention.

[0015] Numbers in the figure: 1-upper air valve, 2-liquid check valve, 3-screw, 4-liquid one-way piston, 5-strong magnet, 6-piston rod, 7-oil inlet, 8-airway hole, 9-piston in cylinder, 10-oil distribution channel, 11-lower air valve, 12-housing, 13-oil supply line, 14-gas propulsion device, 15-buffer ring, 16-oil outlet, 17-pneumatic drive device, 18-Hall element, 19-cylinder, 41-first piston sealing ring, 42-first wear-resistant ring, 43-assembly hole, 44-small quadrangular platform, 45-one-way oil guide hole, 91-second piston sealing ring, 92-second wear-resistant ring, 93-sealing ring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0017] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0018] like Figure 1~Figure 2 As shown, the present invention provides an integrated composite distributor based on air pressure drive, including a housing 12, a liquid one-way piston 4, a liquid check valve 2, an air pressure drive device 17 and an oil supply circuit 13; the distributor has a horizontal channel as the oil supply circuit 13, and an oil inlet 7 and an oil outlet 16 are arranged at both ends of the distributor to provide grease. A plurality of oil circuit distribution channels 10 and an air pressure drive device 17 for controlling the oil supply circuit 13 are vertically arranged in the housing 12, the liquid one-way piston 4 is arranged in the oil circuit distribution channel 10 and connected to the piston rod 6, and the grease in the oil supply circuit 13 is pumped into the liquid check valve 2; the liquid check valve 2 is arranged on the oil circuit distribution channel 10 to ensure the one-way flow of grease and prevent the grease from flowing back; the air pressure drive device 17 is vertically installed in the housing 11, and the air pressure drive device 17 includes a gas propulsion device 14, a second wear-resistant ring 92, a second piston sealing ring 91, an airway hole 8, an upper air valve 1 and a lower air valve 11, which regulate the grease in the oil supply circuit 13; The pneumatic drive device 17 is arranged at the center of the distributor, and the pneumatic drive device 17 is fixed in the shell 12 by screws 3. A gas driving device 14 is installed in the pneumatic drive device 17, and the gas driving device 14 is used to push the piston rod 6 up and down. The liquid one-way piston 4 is arranged in the oil distribution channel 10, and is used to pump lubricating oil into the liquid check valve 2 for oil supply.

[0019] The gas propulsion device 14 includes a cylinder 19 and a piston 9 in the cylinder. The contact between the piston 9 in the cylinder and the cylinder 19 is provided with a second wear-resistant ring 92 and a second piston seal ring 91 to ensure the air tightness in the cylinder. The cylinder 19 is provided with a seal ring 93 and a buffer ring 15 at both ends of the cylinder to relieve the force of the piston 9 in the cylinder moving up and down. The seal ring 93 and the buffer ring 15 are fixed to the cylinder by screws 3. The contact between the liquid one-way piston 4 and the oil distribution channel 13 is provided with a first wear-resistant ring 42 and a first piston seal ring 41. A strong magnet 5 is installed on the piston rod 6 near the piston head of the liquid one-way piston 4. The Hall element 18 is provided on the liquid check valve 2. When the strong magnet 5 approaches the Hall element 18, the change in the position of the liquid one-way piston 4 can be detected by the change in the Hall voltage, thereby judging whether the liquid one-way piston 4 has moved to the oil inlet position of the liquid check valve 2.

[0020] In the present invention, the airway hole 8 is located in the air pressure driving device 17. When the upper air valve 1 and the lower air valve 11 operate, the piston 9 in the cylinder moves to squeeze the gas, and the gas enters or is discharged through the airway hole 8.

[0021] An assembly hole 43 is provided at the center of the top of the liquid one-way piston 4. 18 four-sided pyramid-shaped one-way oil guide holes 45 that are narrow at the top and wide at the bottom are opened inside the liquid one-way piston 4. The bottom of the one-way oil guide hole 45 is sealed diagonally with a metal cross. A small four-sided pyramid body 44 is provided in the one-way oil guide hole 45. The side length of the upper surface of the small four-sided pyramid body 44 is equal to the side length of the top of the one-way oil guide hole 45, and the side length of the lower surface is greater than the side length of the top of the one-way oil guide hole 45 and less than the side length of the bottom of the one-way oil guide hole 45.

[0022] In the present invention, both the upper air valve 1 and the lower air valve 11 have the function of one-way air intake. When the upper air valve 1 is used as an intake valve, the lower air valve 11 is used as an exhaust valve; when the lower air valve 11 is used as an intake valve, the upper air valve 1 is used as an exhaust valve; and alternating control is achieved. The lower air valve 11 takes in air, and the gas is squeezed into the airway hole 8. The pistons 9 (2 groups of 4) in the cylinder barrel move toward each other to the limit position, and the gas is discharged from the upper air valve 1; then, the upper air valve 1 takes in air, and the pistons 9 (2 groups of 4) in the cylinder barrel move away from each other to the limit position, and the gas is squeezed into the airway hole 8, and discharged from the lower air valve 11; and the alternating control is carried out in this way.

[0023] In the embodiment, a method for realizing grease supply by using the above-mentioned integrated compound dispenser driven by air pressure is also provided; the specific process of the method is as follows: Detect the running state of the equipment and judge whether it is necessary to start the oil supply. In the initial state, start the pneumatic driving device 17, and let air into the pneumatic driving device 17 through the lower air valve 11 to push the piston 9 in the cylinder to move, and the upper air valve 1 discharges air, and the pistons 9 in the cylinder move towards each other in groups, and the liquid one-way piston 4 moves to the outside of the oil distribution channel 10; after the execution is completed, let air into the pneumatic driving device 17 through the upper air valve 1 to push the piston 9 in the cylinder to move, and the lower air valve 11 discharges air, and the pistons 9 in the cylinder move away from each other, and the liquid one-way piston 4 moves to the outside of the oil supply oil path 13, and the oil supply is completed. The grease in the oil circuit 13 is pumped into the liquid check valve 2; during the oil supply process, the control system adjusts the air pressure output in real time according to the operating status of the equipment to maintain an appropriate amount of oil supply; the continuous supply of grease is achieved through the reciprocating motion of the piston 9 in the cylinder, and the position of the liquid one-way piston 4 is detected by the Hall element 18 to ensure that the liquid one-way piston 4 is in the correct position at the end of each oil supply (that is, the liquid one-way piston 4 moves to the oil inlet of the liquid check valve 2); when it is detected that the equipment stops running or the preset oil supply time is reached, the control system turns off the air pressure drive device 17 and stops the oil supply.

[0024] It should be noted that in the description of this application, the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be directly connected through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0025] It should be noted that, in this application, 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 such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0026] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An integrated composite dispenser based on air pressure drive, characterized in that: It includes a shell, an oil supply oil circuit, a pneumatic driving device and an oil circuit distribution channel; the oil supply oil circuit is transversely arranged in the shell, and an oil inlet and an oil outlet are arranged on the oil supply oil circuit; the pneumatic driving device is vertically arranged at the center of the shell, and the pneumatic driving device includes a gas driving device, an airway hole, an upper air valve and a lower air valve; the gas driving device includes a cylinder, a piston in the cylinder, a piston rod and a liquid one-way piston, and the cylinders are symmetrically distributed and divided into two groups on the left and right, each group including two cylinders on the upper and lower sides; the airway holes are divided into two groups on the left and right sides, which are used to realize the connection between the top of the upper cylinder and the bottom of the lower cylinder of each group of cylinders, and the mutual connection between the lower end air valve airway and the bottom of the lower cylinder; the upper end air valve airway and the bottom of the upper cylinder and the top of the lower cylinder of each group of cylinders are mutually connected; The oil distribution channel is arranged on the housing, and the oil distribution channel is divided into two groups, which are symmetrically arranged above and below the pneumatic drive device. A liquid one-way piston is arranged in the oil distribution channel, and the liquid one-way piston is connected to the pistons in the upper and lower cylinders of the corresponding group through a piston rod. A liquid check valve is arranged at the output end of the oil distribution channel; During operation, the lower air valve and the upper air valve take in air alternately in one direction, and the gas enters or is discharged through the airway hole. The pistons in the upper and lower cylinders of each group of cylinders move toward each other or move away from each other, so that the grease enters the oil distribution channel from the oil supply line, and the grease is pushed from the oil distribution channel to the liquid check valve to realize oil supply.

2. The integrated compound dispenser based on air pressure drive according to claim 1, characterized in that: A strong magnet is installed on the piston rod near the liquid one-way piston, and a Hall element is installed on the liquid check valve. During operation, the position change of the liquid one-way piston is detected by the change of the Hall voltage, thereby determining whether the liquid one-way piston has moved to the oil inlet position of the liquid check valve.

3. The integrated compound dispenser based on air pressure drive according to claim 1, characterized in that: A plurality of narrow-upper-wide-lower-square-sided pyramidal one-way oil guide holes are provided inside the liquid one-way piston. The bottom of the one-way oil guide hole is sealed diagonally with a metal cross. A small square-sided pyramid body is provided inside the one-way oil guide hole. The side length of the upper surface of the small square-sided pyramid body is equal to the side length of the top end of the one-way oil guide hole, and the side length of the lower surface is greater than the side length of the top end of the one-way oil guide hole and less than the side length of the bottom end of the one-way oil guide hole.

4. The integrated compound dispenser based on air pressure drive according to claim 1, characterized in that: The piston jacket in the cylinder is provided with a wear-resistant ring and a piston sealing ring to achieve sealed contact between the piston in the cylinder and the inner wall of the cylinder; sealing rings and buffer rings are provided at the upper and lower ends of the cylinder.

5. The integrated compound dispenser based on air pressure drive according to claim 1, characterized in that: The outer sleeve of the liquid one-way piston is provided with a wear-resistant ring and a piston sealing ring to achieve sealing contact between the liquid one-way piston and the oil distribution channel.

6. A method for controlling oil supply, characterized in that: The method is implemented by using the integrated composite dispenser according to any one of claims 1 to 5, characterized in that the specific steps are as follows: First, start the pneumatic drive device, input gas into the pneumatic drive device through the lower air valve, and the gas pushes the piston inward through the airway hole, so that the pistons in the cylinder move toward each other to the limit position, and the gas is discharged from the upper air valve; the liquid one-way piston leaves the oil distribution channel, and the grease enters the oil distribution channel; Next, the upper air valve inputs gas to the air pressure drive device, and the gas pushes the piston in the cylinder to move away from the limit position, squeezes the gas into the airway hole, and is discharged from the lower air valve; the liquid one-way piston enters the oil distribution channel, pushing the grease in the oil distribution channel into the liquid check valve, realizing a single oil supply; The continuous supply of grease is achieved through the reciprocating motion of the piston.

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