High-pressure filter valve group with replaceable filter element

Abstract

The utility model relates to the field of filter valve groups, in particular to a high-pressure filter valve group with a replaceable filter element, which comprises a high-pressure filter, a connecting block and a valve block, the top end of the high-pressure filter is communicated with the connecting block used for being connected with other parts and providing a device connector, one side of the connecting block is communicated with the valve block used for being connected with all the valves, the high-pressure filter is hollow, the filter element is connected with the interior of the high-pressure filter, and the sealing cover plate is installed at the bottom end of the high-pressure filter. The fastening bolt is installed at the center of the bottom end of the sealing cover plate in a penetrating mode, one end of the fastening bolt is fixedly connected to the filter element, the filter element can be conveniently replaced by unscrewing the fastening bolt and taking down the sealing cover plate, the whole valve set does not need to be disassembled, the time for replacing the filter element is greatly shortened, manpower cost input is reduced, equipment does not need to be shut down for a long time, and the influence on production efficiency is reduced. While the cleanliness of the hydraulic oil is ensured, the convenience of maintenance and the continuity of equipment operation are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter valve group field especially, relates to high pressure filter valve group of replaceable filter core. BACKGROUND

[0002] High pressure filter valve group of replaceable filter core is a kind of device for filtering fluid under high pressure environment, its feature is that the filter core in the inside can be disassembled and replaced, in high pressure filter valve group, filter core is the core component of realizing filtering function, with the increase of use time, filter core can cause the filtering effect to drop due to the accumulation of impurities, at this moment, filter core needs to be replaced to ensure the normal work and good filtering performance of filter valve group.

[0003] The structure of the existing high pressure filter valve group device, if filter core is replaced, often needs to be relatively complicated disassembling operation to entire valve group, even possibly needs to stop the operation of entire system, this not only consumes a lot of time and labor cost, also can cause equipment downtime, influence production efficiency, make it difficult to guarantee hydraulic oil to be always in ideal clean state in some work scenes that hydraulic oil cleanliness is extremely high, once filter core reaches saturation and is not replaced in time, impurities can enter each component of system along with hydraulic oil, and then increase the wear degree of component, reduce its service life, even possibly cause system failure, influence the normal operation of entire equipment problem.

[0004] Therefore, for the structure of the existing high pressure filter valve group device, if filter core is replaced, often needs to be relatively complicated disassembling operation to entire valve group, even possibly needs to stop the operation of entire system, this not only consumes a lot of time and labor cost, also can cause equipment downtime, influence production efficiency problem, can design a kind of high pressure filter valve group of replaceable filter core by screwing down fastening bolt, removing sealing cover plate, can conveniently replace filter core, do not need to disassemble entire valve group, greatly shorten the time of replacing filter core, reduce labor cost investment, equipment does not need long downtime, reduce the influence on production efficiency, compared with prior art, while guaranteeing hydraulic oil cleanliness, greatly improve the convenience of maintenance and the continuity of equipment operation. SUMMARY

[0005] In order to overcome the structure of the existing high pressure filter valve group device, if filter core is replaced, often needs to be relatively complicated disassembling operation to entire valve group, even possibly needs to stop the operation of entire system, this not only consumes a lot of time and labor cost, also can cause equipment downtime, influence production efficiency problem.

[0006] The utility model discloses a technical scheme for a high-pressure filter valve group with replaceable filter element, comprising a high-pressure filter, a connecting block and a valve block.

[0007] Preferably, in the high-pressure filter valve group with replaceable filter element, hydraulic oil enters the high-pressure filter valve group from the outside through the connecting block. Since the high-pressure filter is in communication with the connecting block, the hydraulic oil flows into the hollow interior of the high-pressure filter. The hydraulic oil entering the high-pressure filter is filtered by the filter element installed inside when flowing through the filter element, and the filtered hydraulic oil flows out of the high-pressure filter and then enters the valve block through the connecting block. The valve block is connected with various valves. The hydraulic oil in the valve block flows to different working circuits according to the control of the various valves to complete the corresponding hydraulic work process. When the filter element needs to be replaced, the fastening bolt is unscrewed. Since one end of the fastening bolt is connected and fixed to the filter element, the filter element connected with the fastening bolt is loosened when the fastening bolt is unscrewed. Then, the sealing cover plate is removed, and the filter element can be taken out from the interior of the high-pressure filter. The old filter element is disassembled, and then a new filter element is put in and the sealing cover plate is reinstalled. The fastening bolt is tightened to fix the filter element in the high-pressure filter, thereby completing the replacement of the filter element and ensuring the continuous normal operation of the high-pressure filter valve group.

[0008] Preferably, the connecting block is externally symmetrically linearly installed with a mounting screw, and the top end of the connecting block is in communication with a connecting pipe.

[0009] Preferably, the connecting pipe is externally sleeved with an auxiliary guard plate, the top end center of the valve block is installed with a pressure measuring connector, and the pressure measuring connector is externally sleeved with a fastening nut.

[0010] Preferably, the valve block is externally provided with a safety pipe interface at the center of the end away from the connecting block, and the side of the valve block provided with the safety pipe interface is provided with a secondary pressure pipe interface.

[0011] Preferably, the valve block is provided with a primary pressure pipe interface at the center of the bottom end, and the side of the bottom end of the valve block located at the primary pressure pipe interface is provided with an oil way interface.

[0012] Preferably, the valve block is connected and installed with a safety valve below the end located at the safety pipe interface, and the end of the valve block located at the safety valve is connected and installed with a pressure reducing valve.

[0013] Preferably, the valve block is installed with an adjusting lock button on one side.

[0014] The beneficial effects of this utility model are as follows: When replacing the filter element in existing high-pressure filter valve groups, it is necessary to disassemble the entire valve group in a complicated manner, which results in a lot of time and labor costs, and equipment downtime affects production efficiency. This device only requires unscrewing the fastening bolt and removing the sealing cover plate to easily replace the filter element without disassembling the entire valve group, which greatly shortens the time for replacing the filter element, reduces labor costs, and eliminates the need for long-term equipment downtime, thus reducing the impact on production efficiency. Compared with the existing technology, while ensuring the cleanliness of hydraulic oil, it greatly improves the convenience of maintenance and the continuity of equipment operation. Attached Figure Description

[0015] Fig. 1 The diagram shown is an overall structural schematic of the high-pressure filter valve assembly with replaceable filter element of this utility model.

[0016] Fig. 2 The diagram shown is a schematic of the pressure testing connector structure of the high-pressure filter valve assembly with replaceable filter element of this utility model.

[0017] Fig. 3 The diagram shown is a schematic diagram of the connecting pipe structure of the high-pressure filter valve assembly with replaceable filter element of this utility model.

[0018] Fig. 4 The diagram shown is a schematic representation of the safety valve structure of the high-pressure filter valve assembly with replaceable filter element of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. High-pressure filter; 2. Connecting block; 3. Valve block; 4. Pressure testing connector; 5. Pressure reducing valve; 6. Safety valve; 7. Connecting pipe; 8. Auxiliary guard plate; 101. Fastening bolt; 301. Primary pressure pipe interface; 302. Oil circuit interface; 303. Safety pipe interface; 304. Secondary pressure pipe interface; 305. Adjustment lock knob. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figs. 1-4In this embodiment, the high-pressure filter valve assembly with replaceable filter element includes a high-pressure filter 1, a connecting block 2, and a valve block 3. The top of the high-pressure filter 1 is connected to the connecting block 2, which provides an interface for connecting other components. A valve block 3 is connected to one side of the connecting block 2, which connects to and installs various valves. The high-pressure filter 1 is hollow, and a filter element is installed inside it. A sealing cover is installed at the bottom of the high-pressure filter 1, and a fastening bolt 101 is installed through the center of the bottom of the sealing cover. One end of the fastening bolt 101 is fixed to the filter element. In the high-pressure filter valve assembly with replaceable filter element, hydraulic oil enters the high-pressure filter valve assembly from the outside through the connecting block 2. Because the high-pressure filter 1 is connected to the connecting block 2, the hydraulic oil flows into the hollow interior of the high-pressure filter 1. The hydraulic oil entering the high-pressure filter 1 flows through the filter element installed inside. Impurities are intercepted by the filter element. The hydraulic oil filtered by the filter element flows out of the high-pressure filter 1 and then enters the valve block 3 through the connecting block 2. The valve block 3 is connected to various valves. The hydraulic oil in the valve block 3 flows to different working circuits according to the control of each valve to complete the corresponding hydraulic process. When the filter element needs to be replaced, the fastening bolt 101 is unscrewed. Since one end of the fastening bolt 101 is connected and fixed to the filter element, the filter element connected to the fastening bolt 101 is loosened as the fastening bolt 101 is unscrewed. Then, the sealing cover is removed, and the filter element can be taken out from the high-pressure filter 1 to complete the disassembly of the old filter element. Then, the new filter element is put in, the sealing cover is reinstalled, and the fastening bolt 101 is tightened to fix the filter element inside the high-pressure filter 1, thereby completing the filter element replacement work and ensuring the continuous normal operation of the high-pressure filter valve group.

[0022] Please see Figs. 1-3 In this embodiment, mounting screws are symmetrically and linearly installed on the outside of the connecting block 2, and a connecting pipe 7 is connected to the top of the connecting block 2. The mounting screws symmetrically and linearly installed on the outside of the connecting block 2 can firmly fix the connecting block 2 to other equipment or structures. The symmetrical linear distribution design makes the connecting block 2 evenly stressed during installation, avoiding loosening or damage caused by uneven stress, ensuring the stability and reliability of the entire valve assembly installation, and reducing the risk of failure caused by loosening of the connecting block 2 during use. An auxiliary protective plate 8 is sleeved on the outside of the connecting pipe 7. A pressure test connector 4 is installed at the center of the top of the valve block 3, and a fastening nut is sleeved on the outside of the pressure test connector 4. The pressure test connector 4 installed at the center of the top of the valve block 3 allows the operator to connect a pressure measuring instrument at any time to measure the pressure of the hydraulic oil in the valve block 3. By monitoring the pressure in real time, the working status of the hydraulic system can be grasped in a timely manner.

[0023] Please see Figs. 1-4In this embodiment, a safety pipe interface 303 is provided at the center of the end of the valve block 3 away from the connecting block 2. A secondary pressure pipe interface 304 is provided on the side of the valve block 3 where the safety pipe interface 303 is provided. The safety pipe interface 303 can be connected to a safety pipe and plays a key role when the hydraulic system pressure rises abnormally and exceeds the safe range. Once the system pressure is too high, the excess pressure is guided to the safe area through the safety pipe interface 303. A primary pressure pipe interface 301 is provided at the center of the bottom end of the valve block 3. An oil circuit interface 302 is provided on the side of the primary pressure pipe interface 301 at the bottom end of the valve block 3. The oil circuit interface 302 provides an additional branch channel for hydraulic oil, which can distribute the hydraulic oil entering the valve block 3 from the primary pressure pipe interface 301 to different branches or hydraulic components. This allows the valve block 3 to meet the oil circuit distribution requirements of multiple actuators working simultaneously or in different working modes in a complex hydraulic system, thereby enhancing the functionality and flexibility of the system.

[0024] Please see Figs. 1-4 In this embodiment, a safety valve 6 is installed at one end of the valve block 3 below the safety pipe interface 303, and a pressure reducing valve 5 is installed at the other end of the valve block 3 on one side of the safety valve 6. The safety valve 6 is connected below the safety pipe interface 303. When the hydraulic system pressure rises abnormally and exceeds the set safety pressure value, the safety valve 6 automatically opens. At this time, it discharges the excess hydraulic oil in the valve block 3 through the safety pipe interface 303 to prevent the system pressure from rising continuously and to avoid damage to the pipes, valves, hydraulic cylinders and other components in the system due to excessive pressure. This effectively protects the entire hydraulic system, reduces the risk of equipment failure, and ensures the personal safety of the operators. An adjustment lock button 305 is installed on one side of the valve block 3. The adjustment lock button 305 has a locking function. After the pressure adjustment is completed, locking it can prevent the adjustment setting value from changing due to external vibration, accidental touch or other factors.

[0025] During operation, hydraulic oil flows in from connecting pipe 7, passes through connecting block 2, and enters the hollow high-pressure filter 1. Inside the high-pressure filter 1, the hydraulic oil passes through the internally installed filter element, where impurities are intercepted. The filtered clean hydraulic oil flows out from the high-pressure filter 1, ensuring that the hydraulic oil entering valve block 3 remains clean, reducing the risk of wear and blockage to the valves within valve block 3 and the entire system. After entering valve block 3, the filtered hydraulic oil first enters the internal oil circuit system of valve block 3 through the primary pressure pipe interface 301. If the system has different requirements for hydraulic oil pressure, it can... The safety valve 6 and the pressure reducing valve 5 are adjusted by adjusting the locking knob 305. The safety valve 6 protects the system. When the system pressure rises abnormally and exceeds the set pressure value of the safety valve 6, the safety valve 6 opens, discharging excess hydraulic oil through the safety pipe interface 303 to prevent damage to the equipment due to excessive system pressure. The pressure reducing valve 5 regulates the pressure of a specific branch. It reduces the higher pressure hydraulic oil entering from the primary pressure pipe interface 301 to a suitable pressure according to the set value, and then outputs it through the secondary pressure pipe interface 304 to provide the hydraulic oil with the required specific pressure. The pressure element provides stable working pressure. In addition to the hydraulic oil output through the secondary pressure pipe interface 304 after pressure regulation, the valve block 3 also distributes hydraulic oil to other different branches through the oil circuit interface 302. This meets the oil circuit distribution requirements of multiple actuators working simultaneously or in different working modes in the entire hydraulic system, ensuring that each actuator can operate normally. During the operation of the valve block 3, the pressure measuring instrument can be connected at any time through the pressure measuring connector 4 installed at the center of the top of the valve block 3 to measure the pressure of the hydraulic oil in the valve block 3. The operator can monitor the system pressure in real time, detect abnormal pressure in time, and take corresponding measures for adjustment and maintenance to ensure the safe and stable operation of the system. The mounting screws symmetrically and linearly installed on the outside of the connecting block 2 firmly fix the connecting block 2 to the relevant equipment to ensure the stability of the entire valve assembly installation. The auxiliary protective plate 8 sleeved on the outside of the connecting pipe 7 provides protection for the connecting pipe 7 to prevent it from being damaged by external impact, and at the same time enhances the structural stability of the connecting pipe 7. The fastening nut sleeved on the outside of the pressure measuring connector 4 firmly fixes the pressure measuring connector 4 to the valve block 3 to ensure the accuracy and stability of pressure measurement.

[0026] Through the above steps, in the high-pressure filter valve assembly with replaceable filter elements, hydraulic oil enters the high-pressure filter valve assembly from the outside through connecting block 2. Since the high-pressure filter 1 is connected to the connecting block 2, the hydraulic oil flows into the hollow interior of the high-pressure filter 1. When the hydraulic oil enters the high-pressure filter 1, impurities are intercepted by the filter element installed inside. The hydraulic oil filtered by the filter element flows out of the high-pressure filter 1 and then enters the valve block 3 through the connecting block 2. The valve block 3 is connected to and installed with various valves. The hydraulic oil in the valve block 3 flows to different working directions according to the control of each valve. The system completes the corresponding hydraulic workflow. When the filter element needs to be replaced, unscrew the fastening bolt 101. Since one end of the fastening bolt 101 is connected and fixed to the filter element, the filter element connected to the fastening bolt 101 is loosened as the fastening bolt 101 is unscrewed. Then, remove the sealing cover plate, and the filter element can be taken out from inside the high-pressure filter 1 to complete the disassembly of the old filter element. Then, put in the new filter element, reinstall the sealing cover plate, and tighten the fastening bolt 101 to fix the filter element inside the high-pressure filter 1, thereby completing the filter element replacement work and ensuring the continuous normal operation of the high-pressure filter valve assembly.

Claims

1. A high-pressure filter valve assembly with replaceable filter element, comprising a high-pressure filter (1); characterized in that: It also includes a connecting block (2) and a valve block (3); the top of the high pressure filter (1) is connected to a connecting block (2) for connecting other components and providing a device interface, and a valve block (3) for connecting and installing various valves is connected to one side of the connecting block (2). The high pressure filter (1) is hollow, and a filter element is connected and installed inside the high pressure filter (1). A sealing cover is installed at the bottom of the high pressure filter (1), and a fastening bolt (101) is installed through the center of the bottom of the sealing cover. One end of the fastening bolt (101) is connected and fixed to the filter element.

2. The high-pressure filter valve assembly with replaceable filter element according to claim 1, characterized in that: The connecting block (2) is symmetrically and linearly mounted with mounting screws on its exterior, and the top of the connecting block (2) is connected to a connecting pipe (7).

3. The high-pressure filter valve assembly with replaceable filter element according to claim 2, characterized in that: An auxiliary protective plate (8) is fitted on the outside of the connecting pipe (7), and a pressure testing connector (4) is installed at the center of the top of the valve block (3). A fastening nut is fitted on the outside of the pressure testing connector (4).

4. The high-pressure filter valve assembly with replaceable filter element according to claim 1, characterized in that: A safety pipe interface (303) is provided at the center of the end of the valve block (3) away from the connecting block (2), and a secondary pressure pipe interface (304) is provided on the side of the valve block (3) where the safety pipe interface (303) is provided.

5. The high-pressure filter valve assembly with replaceable filter element according to claim 4, characterized in that: A primary pressure pipe interface (301) is provided at the center of the bottom end of the valve block (3), and an oil circuit interface (302) is provided on the side of the primary pressure pipe interface (301) at the bottom end of the valve block (3).

6. The high-pressure filter valve assembly with replaceable filter element according to claim 4, characterized in that: A safety valve (6) is installed at one end of the valve block (3) below the safety pipe interface (303), and a pressure reducing valve (5) is installed at the other end of the valve block (3) on one side of the safety valve (6).

7. The high-pressure filter valve assembly with replaceable filter element according to claim 1, characterized in that: An adjustment lock button (305) is installed on one side of the valve block (3).

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