Pump proportional flow and pressure valve group

Abstract

The utility model belongs to the technical field of hydraulic control systems, and discloses a pump proportional flow and pressure valve group, which comprises a proportional pressure reducing valve, a proportional pressure regulating valve, a proportional pressure regulating valve, a proportional pressure regulating valve and a proportional pressure regulating valve, the proportional pressure reducing valve is fixedly mounted on the valve block body; the proportional flow valve is fixedly mounted on the valve block body; the oil drainage joint is fixedly mounted on the valve block body; the pressure joint is fixedly mounted on the valve block body; according to the utility model, the pressure and the flow of each group of loops are adjusted from the pump outlet, the connection of the throttle valve, the pressure reducing valve, the proportional pressure reducing valve and the proportional flow valve in each loop with an external PLC (Programmable Logic Controller) control system is reduced, the opening degree can be adjusted in real time according to an electric signal, and the accurate control on the pressure and the flow of a hydraulic system is realized. The valve group saves cost, simplifies maintenance and is high in integration level.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic control system, especially pump proportional flow and pressure valve group. BACKGROUND

[0002] Traditional multi-loop ironmaking hot blast stove valve hydraulic system, each execution loop is usually composed of reversing valve, throttle valve, pressure reducing valve, reversing valve adjusts mechanism reversing, throttle valve controls speed, pressure reducing valve controls pressure.

[0003] Traditional multi-loop ironmaking hot blast stove valve hydraulic system, each execution loop is usually composed of reversing valve, throttle valve, pressure reducing valve, reversing valve adjusts mechanism reversing, throttle valve controls speed, pressure reducing valve controls pressure. If the number of loops is large, the cost will be high, and the maintenance will be very complicated because of the large number of valves, and the space position will also have a large requirement. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide pump proportional flow and pressure valve group, which aims to solve the technical problems that the traditional multi-loop ironmaking hot blast stove valve hydraulic system, each execution loop is usually composed of reversing valve, throttle valve, pressure reducing valve, reversing valve adjusts mechanism reversing, throttle valve controls speed, pressure reducing valve controls pressure. If the number of loops is large, the cost will be high, and the maintenance will be very complicated because of the large number of valves.

[0005] In order to achieve the above-mentioned utility model purposes, the utility model discloses a pump proportional flow and pressure valve group in the first aspect, which comprises:

[0006] The proportional pressure reducing valve is used for receiving external electrical signals and adjusting its opening degree to control the pressure in the hydraulic system;

[0007] The valve block is fixedly installed on the proportional pressure reducing valve;

[0008] The proportional flow valve is fixedly installed on the valve block, and is used for receiving external electrical signals and adjusting its opening degree to control the flow in the hydraulic system;

[0009] The oil drain connector is fixedly installed on the valve block, and is used for connecting to the original hydraulic system oil tank to discharge excess hydraulic oil;

[0010] The pressure connector is fixedly installed on the valve block, and is used for connecting to the original hydraulic station system oil outlet pipeline;

[0011] The plug-in type overflow valve is fixedly installed on the other end of the pressure connector, and is used for opening when the system pressure exceeds the preset value to prevent overpressure;

[0012] A pressure measuring connector is fixedly installed on one side of the plug-in overflow valve and used for monitoring the pressure inside the hydraulic system.

[0013] A mounting bolt is fixedly installed on the valve block.

[0014] Further, the proportional pressure reducing valve and the proportional flow valve are connected with the on-site electrical PLC, and are used for accurate control of the hydraulic system pressure and flow.

[0015] Further, the oil drain connector is connected with the original hydraulic system oil tank through a pipeline, so as to ensure the safety and stability of system operation.

[0016] Further, the pressure connector is matched with the connection interface of the oil outlet pipeline of the original hydraulic station system, so as to facilitate quick installation and disassembly.

[0017] Further, the plug-in overflow valve is used for quick opening before the system pressure reaches a critical point, so as to ensure system safety.

[0018] Further, the pressure measuring connector is provided with a pressure sensor, which is used for real-time feedback of the pressure data in the hydraulic system.

[0019] Further, the pressure measuring connector is provided with a digital display instrument, which is used for intuitive display of the real-time pressure value of the hydraulic system.

[0020] Further, the valve block is made of high-strength aluminum alloy material, so that the overall weight is reduced, the corrosion resistance and wear resistance are improved, and the service life is prolonged.

[0021] Further, a plurality of independent flow channels are arranged in the valve block, and the flow channels are precisely machined to reduce internal friction loss, improve hydraulic efficiency, optimize fluid flow path, and reduce noise level.

[0022] Further, a plurality of reserved interfaces are arranged on the valve block, and the reserved interfaces are used for future expansion of hydraulic elements or sensors, so as to facilitate system upgrading and maintenance, and also improve the integration and compatibility of the system.

[0023] Beneficial effects:

[0024] 1. The utility model discloses a valve group for adjusting the pressure and flow of each group of circuits from the pump outlet, reducing the throttle valve, pressure reducing valve, proportional pressure reducing valve and proportional flow valve in each circuit, connecting the proportional pressure reducing valve and the proportional flow valve with the external PLC control system, and adjusting the opening degree in real time according to the electric signal, realizing accurate control of the hydraulic system pressure and flow.

[0025] 2、The utility model discloses a plug-in overflow valve can be opened before the system pressure reaches the critical point, and timely release the pressure that is too high, prevent system overpressure, ensure the safe operation of equipment. This fast response mechanism greatly improves the reliability and safety of the system. The pressure connector is in the form of quick connection, convenient to install and detach, simplifies the maintenance and overhaul of the system.

[0026] 3、The utility model discloses a plurality of reserved interfaces are equipped on the valve block, allow user to easily add hydraulic element or sensor, improved the flexibility and adaptability of system, facilitate future extension and upgrade. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 It is the pump proportional flow and pressure valve assembly view of an embodiment of the utility model;

[0028] Fig. 2 It is the pump proportional flow and pressure valve assembly explosion view of an embodiment of the utility model.

[0029] Among them:

[0030] 1-proportional pressure reducing valve;2-valve block;3-proportional flow valve;4-oil drain connector;5-pressure connector;6-plug-in overflow valve;7-pressure measuring connector;8-mounting bolt.

[0031] The utility model discloses the realization, functional characteristics and advantages will be further illustrated with reference to the drawings. DETAILED DESCRIPTION

[0032] It should be understood that the specific embodiments described herein are merely intended to explain the utility model, and are not intended to limit the utility model.

[0033] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0034] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, term " install ", " link ", " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication or two element mutual action relation. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0035] In the utility model, unless another explicit provision and limitation, first feature is " on " or " below " second feature can include that first and second features are directly contacted, also can include that first and second features are not directly contacted but are contacted through other features between them. Moreover, first feature is " on ", " above " and " on " second feature includes that first feature is directly above and obliquely above second feature, or just indicates that the horizontal height of first feature is higher than second feature. First feature is " below ", " below " and " below " second feature includes that first feature is directly below and obliquely below second feature, or just indicates that the horizontal height of first feature is less than second feature.

[0036] Referring to Figs. 1-2 , the utility model provides a pump proportional flow and pressure valve group, comprising:

[0037] Proportional pressure reducing valve 1 is used for receiving external electric signal and adjusting its opening degree accordingly to control the pressure in hydraulic system;

[0038] Valve block 2, proportional pressure reducing valve 1 is fixedly installed on the valve block 2;

[0039] Proportional flow valve 3, the proportional flow valve 3 is fixedly installed on valve block 2, is used for receiving external electric signal and adjusting its opening degree accordingly to control the flow in hydraulic system;

[0040] Oil drain connector 4, the oil drain connector 4 is fixedly installed on valve block 2, is used for connecting to the original hydraulic system oil tank to discharge excess hydraulic oil;

[0041] Pressure connector 5, the pressure connector 5 is fixedly installed on valve block 2, is used for connecting to the original hydraulic station system oil outlet pipeline;

[0042] Plug-in type overflow valve 6, the plug-in type overflow valve 6 is fixedly installed at the other end of pressure connector 5, is used to open when system pressure exceeds preset value to prevent overpressure;

[0043] Pressure measuring connector 7, the pressure measuring connector 7 is fixedly installed on one side of plug-in type overflow valve 6, is used to monitor the pressure inside hydraulic system;

[0044] Mounting bolt 8, which is fixedly mounted on the valve block 2.

[0045] The proportional pressure reducing valve 1 can receive electrical signals from the outside and automatically adjust its opening size according to the signal strength, thereby accurately adjusting the working pressure in the hydraulic system. It is installed on the valve block 2 and connected to the control system through an electrical circuit.

[0046] The valve block 2 is made of high-strength aluminum alloy material, which has good corrosion resistance and wear resistance. The internal structure is provided with multiple precision machined independent flow channels, which reduces internal friction loss, improves hydraulic efficiency, optimizes fluid flow path, and effectively reduces working noise.

[0047] The proportional flow valve 3 is similar to the proportional pressure reducing valve 1, which can also adjust its opening size according to the received electrical signals to control the flow of liquid passing through. The proportional flow valve 3 is also installed on the valve block 2 and connected to the same electrical control system.

[0048] The oil drain connector 4 mounted on the valve block 2 is connected to the oil tank of the hydraulic system through a special pipeline, which is used to discharge excess oil in the system to ensure the safety and stability of the system. The pressure connector 5 is an interface for connecting the oil outlet pipeline of the original hydraulic station system, which takes into account the need for quick installation and disassembly, facilitating system maintenance and repair.

[0049] The plug-in overflow valve 6 is located at the end of the pressure connector 5, which will automatically open when the system pressure reaches the preset safety upper limit to release excessive pressure and protect the system from damage. Standard specification mounting bolts 8 are used to fix each component on the valve block 2, ensuring that each part is tightly connected and maintaining the stability and reliability of the system.

[0050] Optionally, the proportional pressure reducing valve 1 and the proportional flow valve 3 are connected to the on-site electrical PLC for precise control of the hydraulic system pressure and flow.

[0051] In an embodiment, the oil drain connector 4 is connected to the original hydraulic system oil tank through a pipeline to ensure the safety and stability of the system. The pressure connector 5 is matched with the connection interface of the oil outlet pipeline of the original hydraulic station system for quick installation and disassembly. The plug-in overflow valve 6 is used to quickly open before the system pressure reaches the critical point to ensure system safety.

[0052] In an embodiment, the pressure measuring connector 7 is equipped with a pressure sensor for real-time feedback of pressure data in the hydraulic system. The pressure measuring connector 7 is equipped with a digital display instrument for directly displaying the real-time pressure value of the hydraulic system.

[0053] It should be noted that the pressure tap 7 is equipped with a high-precision pressure sensor and a digital display instrument, which can monitor and display the pressure changes inside the hydraulic system in real time, providing intuitive data reference for the operator.

[0054] In an embodiment, the valve block 2 is made of high-strength aluminum alloy material, which not only reduces the overall weight, but also improves the corrosion resistance and wear resistance, prolonging the service life. The valve block 2 is provided with multiple independent flow channels inside, and the flow channels are precisely machined to reduce internal friction loss and improve hydraulic efficiency, while optimizing the fluid flow path and reducing noise level.

[0055] In an embodiment, the valve block 2 is provided with multiple reserved interfaces, which are used for future expansion of hydraulic elements or sensors, facilitating system upgrade and maintenance, while also improving the integration and compatibility of the system.

[0056] It should be noted that in order to adapt to the possible technical upgrade or functional expansion requirements in the future, multiple interfaces are reserved on the valve block 2. These reserved interfaces allow users to easily add additional hydraulic elements or sensors without significantly modifying the existing system structure, improving the flexibility and adaptability of the system.

[0057] Note: The proportional pressure reducing valve 1 receives electrical signals from the external PLC control system. According to the received electrical signals, the proportional pressure reducing valve 1 automatically adjusts the size of its internal opening, thereby changing the hydraulic oil flow through the valve port, and further adjusting the pressure in the system. Achieve precise control of the working pressure of the hydraulic system.

[0058] The proportional flow valve 3 also receives electrical signals from the external PLC control system. According to the change of the electrical signal, the proportional flow valve 3 adjusts the size of its internal opening, controls the hydraulic oil flow through the valve port, and achieves precise control of the flow of the hydraulic system.

[0059] The oil drain connector 4 is connected to the original hydraulic system oil tank through the pipeline. When excessive hydraulic oil is generated in the system or excess oil needs to be discharged, the oil drain connector 4 discharges the excess oil back to the oil tank, ensuring the safety and stability of the system operation.

[0060] The pressure connector 5 is connected to the oil outlet pipeline of the original hydraulic station system. The pressure connector 5 serves as the inlet of the hydraulic oil into the valve group, ensuring smooth flow of hydraulic oil into the valve group. The pressure connector 5 is designed in a quick connection form, facilitating installation and disassembly.

[0061] The plug-in overflow valve 6 is fixedly installed at the other end of the pressure joint 5. When the system pressure exceeds the preset safety threshold, the plug-in overflow valve 6 automatically opens to discharge excess hydraulic oil to the oil drain joint 4, preventing system overpressure. The plug-in overflow valve 6 opens rapidly before the system pressure reaches the critical point, ensuring safe operation of the system.

[0062] The pressure measuring joint 7 is fixedly installed on one side of the plug-in overflow valve 6. The pressure measuring joint 7 is equipped with a high-precision pressure sensor inside, which monitors the pressure changes inside the hydraulic system in real time. The pressure sensor transmits the collected pressure data to the external PLC control system, while the digital display instrument on the pressure measuring joint 7 directly displays the real-time pressure value of the system, making it easy for operators to monitor the system status.

[0063] The valve block 2 is made of high-strength aluminum alloy material, which has good corrosion resistance and wear resistance, prolonging the service life. The valve block 2 is internally provided with multiple independent flow channels, which are precisely machined to reduce internal friction loss, improve hydraulic efficiency, optimize fluid flow path, and reduce noise level. The valve block 2 is provided with multiple reserved interfaces, which facilitate future expansion of hydraulic elements or sensors, improving the integration and compatibility of the system.

[0064] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process conversion based on the content of the present application specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A pump proportioning flow and pressure valve group, characterized in that, The utility model relates to a kind of hydraulic pressure control system, including: Proportional pressure reducing valve (1) for receiving external electrical signal and adjusting its opening degree according to it to control pressure in hydraulic system; Valve block (2), proportional pressure reducing valve (1) is fixedly installed on the valve block (2); Proportional flow valve (3), the proportional flow valve (3) is fixedly installed on valve block (2), for receiving external electrical signal and adjusting its opening degree according to it to control flow in hydraulic system; Oil drain connector (4), the oil drain connector (4) is fixedly installed on valve block (2), for connecting to original hydraulic system oil tank to discharge excess hydraulic oil; Pressure connector (5), the pressure connector (5) is fixedly installed on valve block (2), for connecting to original hydraulic station system oil outlet pipeline; Cartridge type overflow valve (6), the cartridge type overflow valve (6) is fixedly installed on the other end of pressure connector (5), for opening when system pressure exceeds preset value to prevent overpressure; Pressure measuring connector (7), the pressure measuring connector (7) is fixedly installed on one side of cartridge type overflow valve (6), for monitoring pressure inside hydraulic system; Mounting bolt (8), the mounting bolt (8) is fixedly installed on valve block (2).

2. The pump proportion flow and pressure valve group according to claim 1, characterized in that The proportional pressure reducing valve (1) and proportional flow valve (3) are connected with field electrical PLC, for accurate control of hydraulic system pressure and flow.

3. The pump proportion flow and pressure valve group according to claim 1, characterized in that The oil drain connector (4) is connected with original hydraulic system oil tank by pipeline.

4. The pump proportion flow and pressure valve group according to claim 1, characterized in that The pressure connector (5) is matched with the connection interface of original hydraulic station system oil outlet pipeline.

5. The pump proportion flow and pressure valve group according to claim 1, characterized in that The cartridge type overflow valve (6) is used to open quickly before system pressure reaches critical point.

6. The pump proportion flow and pressure valve block of claim 1, wherein The pressure measuring connector (7) is provided with pressure sensor, for real-time feedback of pressure data in hydraulic system.

7. The pump proportion flow and pressure valve group according to claim 1, characterized in that The pressure measuring connector (7) is equipped with digital display instrument, for visually displaying real-time pressure value of hydraulic system.

8. The pump proportion flow and pressure valve group according to claim 1, characterized in that The valve block (2) is made of high-strength aluminum alloy material.

9. The pump proportion flow and pressure valve block of claim 1, wherein, The valve block (2) is provided with multiple independent flow channels, and the flow channels are precisely machined to reduce internal friction loss.

10. The pump proportion flow and pressure valve group according to claim 1, characterized in that The valve block (2) is provided with multiple reserved interfaces, and the reserved interfaces are used for future expansion of hydraulic elements or sensors.

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