A highly adaptable pressure controllable flow dividing control valve

Abstract

The present invention provides a highly adaptable pressure-controlled flow dividing control valve, which includes a flow dividing valve block, a check valve, a relief valve, a pressure sensor, a temperature sensor, a main oil inlet joint, a main oil return joint, a main oil drain joint, a branch oil inlet joint, a branch oil return joint, a main confluence oil drain joint, a first plug and a second plug. This controllable flow dividing control valve can solve the problem that the pressure of the traditional fan drive hydraulic system cannot be controlled, and at the same time solve the problem that the temperature and pressure of the hydraulic system cannot be monitored in real time, enabling the pressure of the fan drive device hydraulic system to be adjustable, thereby improving the safety and reliability of the system. The real-time monitoring of the temperature and pressure of the hydraulic system can further improve the accessibility of system maintenance. The maximum adjustable pressure of this flow dividing control valve can reach 40 Mpa, which is applicable to the fan drive systems of the vast majority of special vehicles, and the application range has been greatly improved compared with traditional flow dividing control valves.

Description

Technical Field

[0001] The present invention belongs to the technical field of fan drive systems for special vehicles, and particularly relates to a highly adaptable pressure-controlled flow dividing control valve. Background Art

[0002] The fan drive system is an important part of the power assist system for special vehicles. The fan drive system drives a hydraulic motor by a fan pump, and then drives the fan to rotate by the hydraulic motor. Its function is to discharge the hot air in the power compartment for forced cooling. The whole system mainly includes two cooling fans. The flow dividing control valve is used to supply the hydraulic oil in the main oil circuit to the two fan motors respectively, and then drive the two cooling fans to exhaust. It is widely used in special vehicles due to its high structural strength, strong reliability, low cost, simple assembly and other advantages.

[0003] However, the current traditional flow dividing control valve has a simple structure, poor system adaptability, and uncontrollable system pressure. During the use of the equipment, problems such as hydraulic pipeline bursting caused by excessive system pressure and pressure shock often occur. Therefore, it is very necessary to design a flow dividing control valve that can control the system pressure, has a wide pressure adjustment range, is applicable to the fan drive systems of most special vehicles, and can monitor the system pressure and temperature in real time. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] The present invention provides a highly adaptable pressure-controlled flow dividing control valve to solve the technical problems of uncontrollable pressure in the traditional fan drive hydraulic system and the inability to monitor the temperature and pressure of the hydraulic system in real time.

[0006] (II) Technical Solutions

[0007] To solve the above technical problems, the present invention provides a highly adaptable pressure-controlled flow dividing control valve, which includes a flow dividing valve block, a check valve, a relief valve, a pressure sensor, a temperature sensor, a main inlet oil joint, a main return oil joint, a main drain oil joint, a branch inlet oil joint, a branch return oil joint, a total confluence drain oil joint, a first plug and a second plug; wherein,

[0008] The inside of the flow dividing valve block is machined with an inlet oil passage, a return oil passage, a drain oil passage, a check valve mounting hole, a relief valve mounting hole, a pressure sensor mounting hole, a temperature sensor mounting hole, a tubing joint mounting hole and a plug mounting hole;

[0009] The check valve is installed in the check valve mounting hole of the flow dividing valve block to enable the oil in the return oil circuit to return to the inlet oil circuit through the check valve;

[0010] The relief valve is installed in the relief valve mounting hole of the flow dividing valve block;

[0011] The pressure sensor and the temperature sensor are respectively installed in the pressure sensor mounting hole and the temperature sensor mounting hole of the flow dividing valve block; among them, the pressure sensor is located on the main oil inlet passage, and the temperature sensor is located on the main oil return passage, and are respectively used for collecting the pressure of the main oil inlet passage and the temperature of the main oil return passage of the system; the pressure sensor and the temperature sensor upload the collected pressure and temperature data to the driver terminal, and the driver monitors the health status of the fan drive system in real time through the terminal to judge whether the pressure of the main oil inlet passage and the temperature of the main oil return passage of the fan drive system are normal;

[0012] The main oil inlet joint, the main oil return joint, the main oil drain joint, the two branch oil inlet joints, the two branch oil return joints, and the main confluence oil drain joint are respectively installed in the corresponding mounting holes of the flow dividing valve block for connecting the pipelines of the hydraulic system;

[0013] The first plug is installed on the corresponding plug mounting hole in the flow dividing valve block for plugging the process holes necessary for the processing of the flow dividing valve oil passage; there are two such process holes, respectively on the main oil inlet passage and the main oil return passage;

[0014] The second screw is installed on the corresponding check valve mounting hole in the flow dividing valve block for plugging the check valve mounting hole after the check valve is installed.

[0015] Further, the material of the flow dividing valve block is 45# high carbon steel.

[0016] Further, multiple bolt fixing holes are machined on the surface of the flow dividing valve block and are fixed on the horizontal deck of the special vehicle by bolts.

[0017] Further, the relief valve is of the adjustable screw type and can adjust the pressure within the range of 0 to 40 Mpa.

[0018] Further, the end of the relief valve is an internal hexagonal adjustable screw for adjusting the system pressure. When the pressure of the fan drive system is too high, the system pressure is adjusted steplessly by rotating the lock nut and the adjusting screw, so that the oil in the main oil inlet passage directly enters the main oil return passage through the relief valve and returns to the fuel tank.

[0019] Further, the main oil inlet joint is installed at the oil inlet end of the tubing joint mounting hole, the main oil return joint is installed at the oil return end of the tubing joint mounting hole, the main oil drain joint is installed at the oil drain end of the tubing joint mounting hole, the two branch oil inlet joints are installed on the two oil inlet holes above the oil inlet oil passage, the two branch oil return joints are installed on the two oil return holes above the oil return oil passage, and the oil drain joint is installed on the oil drain hole above the oil drain oil passage.

[0020] Further, a first combination gasket is installed in cooperation when installing the first plug.

[0021] Further, a second combination gasket is installed in cooperation when installing the second plug.

[0022] (3) Beneficial effects

[0023] The present invention provides a highly adaptable pressure - controllable flow - dividing control valve, which includes a flow - dividing valve block, a check valve, a relief valve, a pressure sensor, a temperature sensor, a main inlet oil joint, a main return oil joint, a main drain oil joint, a branch inlet oil joint, a branch return oil joint, a main confluence drain oil joint, a first plug and a second plug. This controllable flow - dividing control valve can solve the problem that the pressure of the traditional fan - drive hydraulic system cannot be controlled, and at the same time solve the problem that the temperature and pressure of the hydraulic system cannot be monitored in real time, making the pressure of the fan - drive device hydraulic system adjustable, thereby improving the safety and reliability of the system. The real - time monitoring of the temperature and pressure of the hydraulic system can further improve the accessibility of system maintenance. The maximum adjustable pressure of this flow - dividing control valve can reach 40 Mpa, which is applicable to the fan - drive systems of the vast majority of special vehicles, and its application range has been greatly improved compared with the traditional flow - dividing control valve. Description of the drawings

[0024] Figure 1 It is a schematic diagram of the external shape and composition of the flow - dividing control valve of the present invention;

[0025] Figure 2 It is an exploded view of the composition of the flow - dividing control valve of the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the flow - dividing valve block in the present invention;

[0027] Figure 4 It is a schematic diagram of the external shape structure of the relief valve in the present invention. Detailed implementation manners

[0028] To make the objectives, contents and advantages of the present invention clearer, the following further describes the detailed implementation manners of the present invention in conjunction with the drawings and embodiments.

[0029] This embodiment provides a highly adaptable pressure - controllable flow - dividing control valve, and its structure is as shown in Figure 1 and 2 It mainly includes a flow - dividing valve block 1, a check valve 2, a relief valve 3, a pressure sensor 4, a temperature sensor 5, a main inlet oil joint 6, a main return oil joint 7, a main drain oil joint 8, two branch inlet oil joints 9, two branch return oil joints 10, a main confluence drain oil joint 11, two M22 plugs 12, two φ22 mm combined gaskets 13, an M33 plug 14 and a φ33 mm combined gasket 15.

[0030] The flow - dividing control valve is generally fixed on the horizontal deck of a special vehicle during use. As shown in Figure 3As shown, the material of the flow dividing valve block 1 is 45# high carbon steel. Six bolt fixing holes 110 are machined on the surface and it is fixed on the horizontal deck with M8×70 bolts. Inside the flow dividing valve block 1, an oil inlet channel 101, an oil return channel 102, an oil drain channel 103, a check valve mounting hole 104, a relief valve mounting hole 105, a pressure sensor mounting hole 106, a temperature sensor mounting hole 107, a tubing joint mounting hole 108 and a plug mounting hole 109 are machined.

[0031] The check valve 2 is installed in the check valve mounting hole 104 of the flow dividing valve block 1, enabling the oil in the return oil circuit to return to the inlet oil circuit through the check valve 2, forming a protection mechanism to protect the fan motor. This prevents the fan motor from being burned due to lack of oil lubrication when the hydraulic system suddenly loses pressure and the hydraulic control fan continues to rotate due to inertia.

[0032] The relief valve 3 is installed in the relief valve mounting hole 105 of the flow dividing valve block 1. The relief valve 3 is small in volume, compact in structure, has good flow characteristics, low noise and stable pressure, and is widely used as a safety valve in hydraulic systems. This type of relief valve is an adjusting screw type and can adjust the pressure within the range of 0 to 40 Mpa. As Figure 4 shown, the end of the relief valve 3 is an internal hexagonal adjusting screw 302 for adjusting the system pressure. When the pressure of the fan drive system is too high, the system pressure can be steplessly adjusted by rotating the locking nut 301 and the adjusting screw 302, enabling the oil in the main inlet oil circuit to directly enter the main return oil circuit and return to the fuel tank through the relief valve 3, ensuring the safety and reliability of the system.

[0033] The pressure sensor 4 and the temperature sensor 5 are respectively installed in the pressure sensor mounting hole 106 and the temperature sensor mounting hole 107 of the flow dividing valve block 1. Among them, the pressure sensor 4 is located on the main inlet oil circuit and the temperature sensor 5 is located on the main return oil circuit, respectively used to collect the pressure of the main inlet oil circuit and the temperature of the main return oil circuit of the system. The sensors upload the collected pressure and temperature data to the driver's terminal, and the driver can monitor the health status of the fan drive system in real time through the terminal and judge whether the pressure of the main inlet oil circuit and the temperature of the main return oil circuit of the fan drive system are normal.

[0034] The main inlet oil joint 6, the main return oil joint 7, the main drain oil joint 8, two branch inlet oil joints 9, two branch return oil joints 10 and the main confluence drain oil joint 11 are respectively installed in the corresponding mounting holes of the flow dividing valve block 1 for connecting the pipelines of the hydraulic system. Among them,

[0035] The main oil inlet joint 6 is installed at the oil inlet end of the oil pipe joint mounting hole 108, the main oil return joint 7 is installed at the oil return end of the oil pipe joint mounting hole 108, the main oil drain joint 8 is installed at the oil drain end of the oil pipe joint mounting hole 108, the two branch oil inlet joints 9 are installed on the two oil inlet holes above the oil inlet oil channel 101, the two branch oil return joints 10 are installed on the two oil return holes above the oil return oil channel 102, and the oil drain joint 11 is installed on the oil drain hole above the oil drain oil channel 103.

[0036] The M22 screw plug 12 and the φ22mm combination gasket 13 are installed in the corresponding screw plug installation hole 109 in the diverter valve block 1 to block the process hole required for the diverter valve oil channel processing. There are two process holes, one in the main oil inlet and one in the main oil return. During the system maintenance process, the two process holes can be connected to the required type of test oil gauge as needed to improve the accessibility of system maintenance and guarantee.

[0037] The M33 screw plug 14 and the φ33 mm combination gasket 15 are cooperatively installed on the corresponding one-way valve installation hole 104 in the diverter valve block 1 to block the one-way valve installation hole 104 after the one-way valve 2 is installed.

[0038] The present invention realizes that the pressure of the fan drive system can be adjusted and monitored by adopting the measures of built-in overflow valve, pressure sensor and temperature sensor in the diverter control valve. The following briefly describes the system pressure adjustment operation process:

[0039] When the pressure of the fan drive system is too high, the pressure can be adjusted by adjusting the adjusting screw 301 of the relief valve 3. To ensure the safety of equipment and personnel, the hydraulic system must be turned off before adjustment to put the system in a pressure-free state. First, loosen the fastening nut 301 on the adjusting screw 302 of the relief valve 3 with a wrench, and then use the hexagonal wrench to adjust the extension length of the screw 302. The extension length of the adjusting screw 302 determines the system pressure. Adjust the adjusting screw 302 to an appropriate length according to actual needs, then run the hydraulic system, and read the system pressure through the driver terminal to see if it meets the use requirements. If it does not meet the requirements, turn off the hydraulic system and continue to adjust the length of the screw 302. If it meets the requirements, tighten the fastening nut 301.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A highly adaptable pressure controllable flow dividing control valve, characterized in that, The flow control valve includes a flow control valve block, a check valve, a relief valve, a pressure sensor, a temperature sensor, a main inlet oil joint, a main return oil joint, a main drain oil joint, a branch inlet oil joint, a branch return oil joint, a main confluence drain oil joint, a first plug and a second plug; among them, The inside of the flow control valve block is machined with an inlet oil passage, a return oil passage, a drain oil passage, a check valve mounting hole, a relief valve mounting hole, a pressure sensor mounting hole, a temperature sensor mounting hole, a tubing joint mounting hole and a plug mounting hole; The check valve is installed in the check valve mounting hole of the flow control valve block, so that the oil in the return oil circuit returns to the inlet oil circuit through the check valve; The relief valve is installed in the relief valve mounting hole of the flow control valve block; The pressure sensor and the temperature sensor are respectively installed in the pressure sensor mounting hole and the temperature sensor mounting hole of the flow control valve block; among them, the pressure sensor is located on the main inlet oil path, and the temperature sensor is located on the main return oil path, which are respectively used to collect the pressure of the main inlet oil path and the temperature of the main return oil path of the system; the pressure sensor and the temperature sensor upload the collected pressure and temperature data to the driver terminal, and the driver monitors the health status of the fan drive system in real time through the terminal to judge whether the pressure of the main inlet oil path and the temperature of the main return oil path of the fan drive system are normal; The main inlet oil joint, the main return oil joint, the main drain oil joint, two branch inlet oil joints, two branch return oil joints, and the main confluence drain oil joint are respectively installed in the corresponding mounting holes of the flow control valve block for connecting the pipelines of the hydraulic system; The first plug is installed on the corresponding plug mounting hole in the flow control valve block to block the process holes necessary for machining the oil passage of the flow control valve; there are two such process holes, which are respectively on the main inlet oil path and the main return oil path; The second screw is installed on the corresponding check valve mounting hole in the flow control valve block to block the check valve mounting hole after the check valve is installed; The material of the flow control valve block is 45# high carbon steel, and the surface of the flow control valve block is machined with a plurality of bolt fixing holes, and is fixed on the horizontal deck of the special vehicle by bolts.

2. The highly adaptable pressure controllable flow dividing control valve according to claim 1, characterized in that, The relief valve is of the adjustable screw type and can adjust the pressure within the range of 0 to 40 Mpa.

3. The highly adaptable pressure controllable flow dividing control valve according to claim 2, characterized in that, The end of the relief valve is an internal hexagonal adjusting screw, which is used to adjust the system pressure. When the pressure of the fan drive system is too high, the system pressure is adjusted steplessly by rotating the locking nut and the adjusting screw, so that the oil in the main inlet oil path enters the main return oil path directly through the relief valve and returns to the fuel tank.

4. The highly adaptable pressure controllable flow dividing control valve according to claim 1, characterized in that, The main inlet oil joint is installed at the inlet end of the tubing joint mounting hole, the main return oil joint is installed at the return oil end of the tubing joint mounting hole, the main drain oil joint is installed at the drain oil end of the tubing joint mounting hole, two branch inlet oil joints are installed on the two inlet holes above the inlet oil passage, two branch return oil joints are installed on the two return holes above the return oil passage, and the drain oil joint is installed on the drain hole above the drain oil passage.

5. The highly adaptable pressure controllable flow dividing control valve according to claim 1, characterized in that, When installing the first plug, a first combination gasket is installed in cooperation.

6. The highly adaptable pressure controllable flow dividing control valve according to claim 1, characterized in that, When installing the second plug, a second combination gasket is installed in cooperation.

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