A filter structure

Abstract

The utility model discloses a filter structure, including casing, filter core, input pipe, output pipe, overpressure output pipe, pressure sensor and pressure regulating valve body, the filter core sets up in the casing, the input pipe and output pipe set up on the casing and with the casing inside intercommunication, the pressure sensor sets up on the casing for monitoring casing inside pressure safety valve value, the pressure regulating valve body sets up on the casing, when pressure sensor monitors casing inside pressure to exceed safety valve value, and the pressure regulating valve body opens overpressure output pipe. The utility model discloses through integration pressure sensor and pressure regulating valve body, realizes automatic pressure monitoring and safety release, adopts modular casing design simultaneously, is convenient for maintenance and replaces filter core. Through the independent setting overpressure output pipe, avoids the abnormal fluid to cause the damage to main system. Adopt detachable casing and double pressure monitoring, enhance the maintainability and operability of equipment. Optimize internal flow passage and filter core layout, improve the filtration efficiency and service life.

Description

Technical Field

[0001] This utility model relates to the field of fluid processing equipment technology, specifically to a filter structure. Background Technology

[0002] Filters are widely used in industrial, chemical, and water treatment fields to remove impurities from fluids. Traditional filters typically consist of a housing, filter element, inlet pipe, and outlet pipe, relying on the filter element for physical filtration. However, during operation, the internal pressure of the filter may rise due to filter element blockage, sudden changes in fluid flow, or other abnormal operating conditions, exceeding the safety threshold and leading to equipment damage or safety accidents. In existing technologies, many filters use purely mechanical safety valves (such as spring-loaded pressure relief valves) for pressure release. While this structure is simple, it suffers from inaccurate response thresholds, delayed action, and susceptibility to jamming, resulting in low reliability. Furthermore, the pressure relief channel of mechanical safety valves is often shared with the main outlet pipe, potentially causing contaminated fluid to flow back into the main system, causing contamination or equipment failure. Additionally, traditional filter housings are often one-piece or bolted together, requiring disassembly of the entire housing for maintenance, which is cumbersome and costly. Pressure monitoring typically relies solely on mechanical pressure gauges, failing to achieve automatic control and remote monitoring, resulting in low automation levels.

[0003] Therefore, there is an urgent need in this field for a filter structure that can accurately monitor pressure, automatically and quickly release pressure, and is easy to maintain, in order to improve the safety and intelligence of equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a filter structure that integrates a pressure sensor and a pressure regulating valve to achieve automatic pressure monitoring and safe release. It also employs a modular housing design for easy maintenance and filter element replacement. Specific objectives include: providing a filter capable of accurately sensing internal pressure and automatically triggering pressure relief, improving response speed and reliability; preventing damage to the main system from abnormal fluids by using an independently designed overpressure output pipe; enhancing maintainability and operability through a detachable housing and dual pressure monitoring; and optimizing the internal flow channels and filter element layout to improve filtration efficiency and service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A filter structure includes a housing, a filter element, an input pipe, an output pipe, an overpressure output pipe, a pressure sensor, and a pressure regulating valve body. The filter element is disposed inside the housing. The input pipe and the output pipe are disposed on the housing and communicate with the interior of the housing. The pressure sensor is disposed on the housing to monitor the internal pressure safety threshold. The pressure regulating valve body is disposed on the housing. When the pressure sensor detects that the internal pressure of the housing exceeds the safety threshold, the pressure regulating valve body opens the overpressure output pipe.

[0006] Furthermore, it also includes a pressure gauge, which is mounted on the housing to monitor the internal pressure of the housing.

[0007] Furthermore, the housing includes a filter cartridge, an upper end plate, and a lower end plate. The filter cartridge is detachably connected to the upper end plate and the lower end plate, and a sealing ring is provided between the filter cartridge and the upper end plate and the lower end plate.

[0008] Furthermore, the outer side of the filter cartridge is provided with several outwardly protruding connecting parts, and the outer sides of the upper end plate and the lower end plate are provided with mating parts corresponding to the connecting parts. Both the connecting parts and the mating parts are provided with screw holes, and the end plates are connected to the filter cartridge by fixing pins.

[0009] Furthermore, the connecting part is provided with an inwardly recessed flat cut for positioning the filter cartridge and external components, and the flat cut is provided with a locking hole.

[0010] Furthermore, the filter cartridge is provided with two sets of filter elements, and the upper end plate is provided with a buffer flow channel. Both sets of filter elements are connected to the buffer flow channel inside the upper end plate.

[0011] Furthermore, the input pipe is connected to the buffer channel inside the upper end plate, and the output pipe and overpressure output pipe are disposed on the upper end plate and connected to the inside of the filter cartridge.

[0012] Furthermore, the pressure sensor is mounted on the upper end plate to monitor the internal pressure safety threshold of the filter cartridge, and the pressure regulating valve body is mounted on the upper end plate.

[0013] Compared with existing technologies, the technical solution of this patent achieves the following beneficial effects: 1. By linking the pressure sensor with the pressure regulating valve, an automatic control system is formed, which can accurately monitor the pressure and immediately open the overpressure output pipe when the pressure exceeds the safety threshold, quickly releasing the pressure. The response threshold is accurate and the action is reliable, which greatly improves the safety and automation level of equipment operation.

[0014] 2. The independent setting of the overpressure output pipe provides a dedicated discharge channel for fluids under abnormal operating conditions, effectively guiding contaminated or abnormal liquids to a safe location and avoiding damage to the main system.

[0015] 3. Pressure gauges and pressure sensors complement each other, providing both direct reading and electronic monitoring, facilitating daily maintenance and status monitoring, and enhancing operability and user-friendly design.

[0016] 4. The housing adopts a detachable connection of filter cartridge, upper end plate, and lower end plate, and is equipped with a sealing ring, making filter element replacement simple, maintenance time short, and reducing long-term maintenance costs. The locking structure of the connecting part, mating part, and fixing pin ensures a tight seal under internal pressure, guaranteeing a good sealing effect. The design of the flat cut and locking hole enables quick and accurate positioning and prevents displacement during operation, improving system stability.

[0017] 5. The parallel structure of two sets of filter elements increases the throughput, while the internal buffer channel of the upper end plate reduces fluid impact, protects the filter elements, and improves filtration quality. The pressure sensor and pressure regulating valve are centrally mounted on the upper end plate, reducing housing openings, lowering the risk of leakage, and facilitating wiring and pipe connections. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic representation of the overall structure of the filter of this utility model. Figure 2 The diagram shown is a top view of the filter structure of this utility model; Figure 3 The diagram shown is an exploded assembly structure diagram of the filter of this utility model; Figure 4 The diagram shown is a cross-sectional view of the filter of this utility model.

[0019] In the diagram: 1. Housing; 2. Filter element; 3. Inlet pipe; 4. Outlet pipe; 5. Overpressure outlet pipe; 6. Pressure sensor; 7. Pressure regulating valve body; 8. Pressure gauge; 11. Filter cartridge; 111. Connecting part; 1111. Flat cut part; 1112. Locking hole; 12. Upper end plate; 121. Butt joint; 122. Buffer flow channel; 13. Lower end plate; 131. Butt joint; 14. Fixing pin; 15. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] See Figure 1-4As shown, this embodiment provides a filter structure, including a housing 1, a filter element 2, an input pipe 3, an output pipe 4, an overpressure output pipe 5, a pressure sensor 6, and a pressure regulating valve body 7. The filter element 2 is disposed inside the housing 1. The input pipe 3 and the output pipe 4 are disposed on the housing 1 and communicate with the interior of the housing. The pressure sensor 6 is disposed on the housing 1 to monitor the internal pressure safety threshold. The pressure regulating valve body 7 is disposed on the housing 1. When the pressure sensor 6 detects that the internal pressure exceeds the safety threshold, the spring (not shown in the figure) inside the pressure regulating valve body 7 is compressed, conducting and opening the overpressure output pipe 5. Through the linkage between the pressure sensor 6 and the pressure regulating valve body 7, an automatic control system is formed. This structure can accurately sense the pressure state and immediately trigger an action when the preset safety threshold is exceeded, opening the overpressure output pipe 5 to quickly release the pressure, greatly improving the safety and automation level of equipment operation. Compared with the traditional purely mechanical structure, the structure scheme of electronic sensing and valve body linkage has a more accurate response threshold and more reliable action. The independent setting of the overpressure output pipe 5 provides a dedicated discharge channel for fluids under abnormal operating conditions, which can effectively guide liquids that may be contaminated or in an abnormal state to a safe location, avoiding damage to the main system or causing safety accidents.

[0022] The filter structure also includes a pressure gauge 8, which is mounted on the housing 1 to monitor the internal pressure. The pressure gauge 8 and the pressure sensor 6 complement each other, providing dual monitoring capabilities for the equipment. Operators can directly read pressure values ​​without relying on the electronic system, facilitating daily status monitoring and equipment maintenance, and enhancing the operability and user-friendly design of the equipment.

[0023] The housing 1 includes a filter cartridge 11, an upper end plate 12, and a lower end plate 13. The filter cartridge 11 is detachably connected to the upper end plate 12 and the lower end plate 13, and a sealing ring 15 is provided between the filter cartridge 11 and the upper end plate 12 and the lower end plate 13. By designing the housing with a detachable connection between the filter cartridge 11, the upper end plate 12, and the lower end plate 13, and providing the sealing ring 15, it is very convenient to open the housing and replace the filter element 2. This modular structure design greatly shortens maintenance time and reduces long-term maintenance costs.

[0024] The outer side of the filter cartridge 11 is provided with several outwardly protruding connecting parts 111. The outer sides of the upper end plate 12 and the lower end plate 13 are provided with mating parts (121, 131) corresponding to the connecting parts 111. Both the connecting parts 111 and the mating parts (121, 131) are provided with screw holes, and the end plates are connected to the filter cartridge 11 by fixing pins 14. The structure of connecting parts 111 and mating parts (121, 131) and locking them by fixing pins 14 provides a strong mechanical connection, ensuring the tight fit between the components under internal pressure, thereby ensuring the compression and sealing effect of the sealing ring.

[0025] The connecting part 111 has an inwardly recessed flat cut 1111 for positioning the filter cartridge 11 and external components. The flat cut 1111 has a locking hole 1112. The inwardly recessed flat cut 1111 forms a reliable positioning reference, ensuring that the filter cartridge and end plate, and even the entire filter and external mounting base, can be quickly and accurately aligned and installed, preventing movement during fastening. The locking hole 1112 on the flat cut 1111 can cooperate with external fixing pins or locks to firmly lock the filter assembly itself in the installation position, effectively preventing the equipment from shifting or loosening during operation vibration, and improving the stability of the entire system.

[0026] The filter cartridge 11 contains two sets of filter elements 2, and the upper end plate 12 contains a buffer flow channel 122. Both sets of filter elements 2 are connected to the buffer flow channel 122 inside the upper end plate 12. This parallel structure of two sets of filter elements 2 inside the filter cartridge 11 increases the throughput per unit time.

[0027] The inlet pipe 3 is connected to the buffer channel 122 inside the upper end plate 12. The outlet pipe 4 and the overpressure outlet pipe 5 are located on the upper end plate 12 and are connected to the inside of the filter cartridge 11. By setting the buffer channel 122 inside the upper end plate 12, the buffer channel 122 buffers the liquid that has just entered. Then, the liquid is distributed into each filter element 2 through the buffer channel 122, preventing excessive flow from directly impacting the filter element 2 and causing damage to the filter element 2, or causing the filter element 2 to become clogged and affecting the filtration quality.

[0028] Pressure sensor 6 is mounted on the upper end plate 12 to monitor the internal pressure safety threshold of filter cartridge 11, and pressure regulating valve body 7 is also mounted on the upper end plate 12. By centrally mounting these two core monitoring and actuation components—pressure sensor 6 and pressure regulating valve body 7—on the upper end plate 12, this structural design allows the sensor's monitoring point to be closer to the filter cartridge 11 cavity that needs protection, resulting in a more timely response. Simultaneously, concentrating all functional interfaces and monitoring ports on the upper end plate 12 creates a compact layout and facilitates wiring and pipe connections.

[0029] The working principle of the filter of this utility model is as follows: Normal filtration process: Liquid enters the buffer channel 122 inside the upper plate 12 through the inlet pipe 3. The buffer channel 122 buffers and distributes the fluid, reducing impact. Then the liquid enters the filter cartridge 11, where it is filtered by two sets of filter elements 2. The filtered liquid exits from the bottom of the filter element 2, enters the chamber of the filter cartridge 11, and finally exits through the outlet pipe 4.

[0030] Overpressure relief process: Pressure sensor 6 monitors the internal pressure of filter cartridge 11 in real time. When the pressure exceeds the preset safety threshold (e.g., due to filter blockage or abnormal flow), pressure sensor 6 triggers the activation of pressure regulating valve 7. Pressure regulating valve 7 is a mechanical component with an internal spring. When the pressure increases, the spring compresses, opening the overpressure output pipe 5 and quickly discharging the liquid in the filter cartridge 11 cavity to a safe position, preventing damage to the equipment due to excessive pressure. Pressure gauge 8 also provides a clear pressure display for easy on-site monitoring. Throughout the process, the linkage between pressure sensor 6 and pressure regulating valve 7 enables automatic control, ensuring the safe and efficient operation of the filter.

Claims

1. A filter structure, characterized in that, The device includes a housing (1), a filter element (2), an input pipe (3), an output pipe (4), an overpressure output pipe (5), a pressure sensor (6), and a pressure regulating valve body (7). The filter element (2) is installed inside the housing (1). The input pipe (3) and the output pipe (4) are installed on the housing (1) and communicate with the inside of the housing. The pressure sensor (6) is installed on the housing (1) to monitor the internal pressure safety threshold. The pressure regulating valve body (7) is installed on the housing (1). When the pressure sensor (6) detects that the internal pressure of the housing exceeds the safety threshold, the pressure regulating valve body (7) opens the overpressure output pipe (5).

2. The filter structure according to claim 1, characterized in that, It also includes a pressure gauge (8), which is mounted on the housing (1) for monitoring the internal pressure of the housing.

3. The filter structure according to claim 1, characterized in that, The housing (1) includes a filter cartridge (11), an upper end plate (12) and a lower end plate (13). The filter cartridge (11) is detachably connected to the upper end plate (12) and the lower end plate (13), and a sealing ring (15) is provided between the filter cartridge (11) and the upper end plate (12) and the lower end plate (13).

4. The filter structure according to claim 3, characterized in that, The filter cartridge (11) has several outwardly protruding connecting parts (111) on its outer side. The upper end plate (12) and the lower end plate (13) have corresponding docking parts (121, 131) on their outer sides. Both the connecting parts (111) and the docking parts (121, 131) have screw holes. The end plate is connected to the filter cartridge (11) by a fixing pin (14).

5. The filter structure according to claim 4, characterized in that, The connecting part (111) is provided with an inwardly recessed flat cut (1111) for positioning the filter cartridge (11) and the external components. The flat cut (1111) is provided with a locking hole (1112).

6. The filter structure according to claim 3, characterized in that, The filter cartridge (11) is provided with multiple sets of filter elements (2), and the upper end plate (12) is provided with a buffer flow channel (122). The multiple sets of filter elements (2) are all connected to the buffer flow channel (122) inside the upper end plate (12).

7. The filter structure according to claim 6, characterized in that, The input pipe (3) is connected to the buffer channel (122) inside the upper end plate (12), and the output pipe (4) and the overpressure output pipe (5) are set on the upper end plate (12) and connected to the inside of the filter cartridge (11).

8. The filter structure according to claim 7, characterized in that, The pressure sensor (6) is installed on the upper end plate (12) to monitor the internal pressure safety threshold of the filter cartridge (11), and the pressure regulating valve body (7) is installed on the upper end plate (12).

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