Filter element replacing device of air filter

Abstract

The utility model relates to an air filter element replacing device which comprises a filtering chamber, a cleaning chamber and a differential pressure gauge. Air suction openings are correspondingly formed in the two sides of the filter chamber, a partition plate is arranged in the filter chamber and divides the filter chamber into two filter cavities, and replaceable filter elements are arranged in the filter cavities. The cleaning chamber is communicated with the two filtering cavities, an electromagnetic valve is arranged between the filtering cavities and the cleaning chamber, and an air outlet is formed in the side, away from the filtering cavities, of the cleaning chamber. One end of the differential pressure gauge extends into the filter cavity, and the other end of the differential pressure gauge extends into the clean chamber and is used for measuring the pressure difference between the filter cavity and the clean chamber. The filter chamber is divided into the two independent filter cavities through the partition plate, the electromagnetic valve is arranged between the filter cavities and the clean chamber, and the differential pressure gauge is combined to monitor the pressure difference between the filter cavities and the clean chamber in real time, so that the running state of the filter element is monitored. And when the pressure difference exceeds a set value, the electromagnetic valve of the corresponding filter cavity is closed, so that the blocked filter element can be replaced under the condition of not interrupting the operation of the compressor.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal compressor air filtration technology, specifically to an air filter element replacement device. Background Technology

[0002] In centrifugal compressor systems, the air filter, as the first line of defense, plays a crucial role in intercepting impurities such as dust, oil, moisture, and rust from the air. If these contaminants enter the compressor, they accelerate the wear of moving parts, leading to decreased operating efficiency, abnormal vibration, or shutdowns. In severe cases, they can even cause permanent damage to core components (such as impellers and bearings), significantly shortening the overall lifespan of the equipment. Therefore, the performance of the air filter directly affects the operational stability and economy of the compressor.

[0003] Existing air filter cartridges are typically replaced periodically, which can easily lead to untimely or premature replacements, affecting equipment operating efficiency or wasting resources. Furthermore, replacing cartridges requires machine shutdown, disrupting continuous equipment operation, especially in high-load industrial settings where downtime can result in significant economic losses. Utility Model Content

[0004] The purpose of this invention is to provide an air filter cartridge replacement device that divides the filter chamber into two independent filter chambers by setting a partition. A solenoid valve is installed between the filter chamber and the cleanroom, and a differential pressure gauge is used to monitor the pressure difference between the filter chamber and the cleanroom in real time, enabling monitoring of the filter cartridge's operating status. When the pressure difference exceeds a set value, the solenoid valve of the corresponding filter chamber is closed, allowing for the replacement of clogged filter cartridges without interrupting compressor operation. This effectively solves the production interruption problem caused by machine downtime in traditional filter cartridge replacement methods, while avoiding resource waste or untimely replacement due to fixed replacement cycles, thus improving equipment operating efficiency and economy.

[0005] To achieve the above objectives, this utility model provides an air filter element replacement device, comprising:

[0006] The filter chamber has air inlets on both sides, and a partition is installed inside the filter chamber to divide it into two filter chambers. Each filter chamber contains a replaceable filter element.

[0007] A clean room is connected to the two filter chambers. A solenoid valve is provided between the filter chambers and the clean room. An air outlet is provided on the side of the clean room away from the filter chambers.

[0008] A differential pressure gauge, one end of which extends into the filter chamber and the other end of which extends into the cleanroom, is used to measure the pressure difference between the filter chamber and the cleanroom.

[0009] Optionally, the filter element includes a primary filter element disposed at the air intake and a secondary filter element disposed between the filter chamber and the clean room.

[0010] Optionally, the air filter element replacement device further includes:

[0011] An alarm, connected to the differential pressure gauge, is used to provide an alarm prompt for filter replacement.

[0012] Optionally, a rain cover is provided at the air intake.

[0013] Optionally, the filtration chamber is provided with an openable door on the side away from the cleanroom.

[0014] Optionally, the differential pressure gauge head is located outside the clean room.

[0015] The beneficial effects of this invention are as follows: By setting a partition to divide the filter chamber into two independent filter chambers, and installing a solenoid valve between the filter chamber and the cleanroom, combined with a differential pressure gauge to monitor the pressure difference between the filter chamber and the cleanroom in real time, the operating status of the filter element can be monitored. When the pressure difference exceeds the set value, the solenoid valve of the corresponding filter chamber is closed, thereby enabling the replacement of clogged filter elements without interrupting the compressor operation. This effectively solves the production interruption problem caused by machine downtime in traditional filter element replacement methods, while avoiding resource waste or untimely replacement due to fixed replacement cycles, thus improving equipment operating efficiency and economy.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a front view of an air filter element replacement device according to an embodiment of the present invention;

[0018] Figure 2 This is a side view of an air filter element replacement device according to an embodiment of the present invention;

[0019] Figure 3 This is a top view of an air filter element replacement device according to an embodiment of the present invention;

[0020] In the diagram: 1. Filter chamber; 11. Air intake; 12. Partition; 13. Filter cavity; 2. Clean room; 21. Air outlet; 3. Differential pressure gauge; 4. Filter element; 41. Primary filter element; 42. Secondary filter element; 5. Solenoid valve; 6. Rain cover; 7. Door. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] Please see Figures 1 to 3 An air filter cartridge replacement device according to a preferred embodiment of this application includes a filter chamber 1, a cleanroom 2, and a differential pressure gauge 3. Air inlets 11 are correspondingly arranged on both sides of the filter chamber 1. A partition 12 is provided inside the filter chamber 1, dividing it into two filter chambers 13. Replaceable filter cartridges 4 are installed in the filter chambers 13. The cleanroom 2 communicates with the two filter chambers 13. A solenoid valve 5 is provided between the filter chambers 13 and the cleanroom 2. An air outlet 21 is provided on the side of the cleanroom 2 away from the filter chambers 13. One end of the differential pressure gauge 3 extends into the filter chamber 13, and the other end extends into the cleanroom 2, used to measure the pressure difference between the filter chamber 13 and the cleanroom 2.

[0025] According to the embodiment of this utility model, the filter chamber 1 is divided into two independent filter chambers 13 by a partition 12, and a solenoid valve 5 is installed between the filter chamber 13 and the clean room 2. A differential pressure gauge 3 monitors the pressure difference between the filter chamber 13 and the clean room 2 in real time, thereby monitoring the operating status of the filter element 4. When the pressure difference exceeds a set value, the solenoid valve 5 of the corresponding filter chamber 13 is closed, allowing the clogged filter element 4 to be replaced without interrupting the compressor operation. This effectively solves the production interruption problem caused by machine downtime in traditional filter element 4 replacement methods, while avoiding resource waste or untimely replacement due to fixed replacement cycles, thus improving equipment operating efficiency and economy. It should be noted that the two independent filter chambers 13 correspond to the air intake 11 on one side of the filter chamber 1 and are connected to the clean room 2. Therefore, when the filter element 4 is not clogged, the pressure difference between each filter chamber 13 and the clean room 2 is small, allowing air to pass smoothly through the filter element 4, and maintaining a relative pressure balance between the filter chamber 13 and the clean room 2. When filter element 4 begins to clog, the resistance to airflow through it gradually increases, causing the pressure inside filter chamber 13 to rise, while the pressure inside cleanroom 2 decreases due to reduced airflow. At this point, the pressure difference between filter chamber 13 and cleanroom 2 begins to increase. As the clogging worsens, the pressure inside filter chamber 13 further increases, while the pressure inside cleanroom 2 further decreases, resulting in a significant increase in the pressure difference between the two to the set value.

[0026] The following detailed description uses specific examples:

[0027] Please see Figure 1 and Figure 3 The filter element 4 includes a primary filter element 41 located at the air intake 11 and a secondary filter element 42 located between the filter chamber 13 and the cleanroom 2. The primary filter element 414 and the secondary filter element 42 enable a multi-stage filtration function. The primary filter element 41, located at the air intake 11, primarily intercepts larger particles, reducing the workload on the secondary filter element 42. The secondary filter element 42, located between the filter chamber 13 and the cleanroom 2, further filters fine particles and contaminants such as oil. This multi-stage filtration design improves filtration efficiency, extends the service life of the secondary filter element 42, and reduces the overall maintenance frequency and cost of the filtration system. In this embodiment, the secondary filter element 42 is a square frame filter element 4 with a cross-sectional dimension of 592×592mm.

[0028] The air filter element 4 replacement device also includes an alarm connected to a differential pressure gauge 3 for alerting when the filter element 4 needs replacing. When the differential pressure gauge 3 detects that the pressure difference between the filter chamber 13 and the cleanroom 2 exceeds a set value, the alarm will issue a warning signal (such as an audible and visual alarm or remote notification) to remind the operator to replace the filter element 4 in a timely manner. In this embodiment, the differential pressure setting value of the differential pressure gauge 3 is 1500 Pa when the alarm occurs.

[0029] Please see Figure 1 and Figure 3 A rain cover 6 is installed at the air intake 11. By installing the rain cover 6 at the air intake 11, rainwater, snow or other liquids are prevented from entering the filtration system, avoiding moisture or damage to the filter element 4, and reducing the risk of moisture entering the compressor.

[0030] Please see Figure 3 The filter chamber 1 is equipped with an openable door 7 on the side away from the clean room 2. By providing an openable door 7 on one side of the filter chamber 1, it is convenient for operators to inspect, maintain and replace the filter element 4.

[0031] Please see Figure 2 The differential pressure gauge 3 is positioned outside cleanroom 2. This placement allows operators to directly observe and read differential pressure data without opening filter chamber 1 or cleanroom 2. This design improves the convenience and safety of monitoring while avoiding potential external contamination that could be introduced by frequently opening filter chamber 1.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An air filter element replacement device, characterized in that, include: The filter chamber has air inlets on both sides, and a partition is installed inside the filter chamber to divide it into two filter chambers. Each filter chamber contains a replaceable filter element. A clean room is connected to the two filter chambers. A solenoid valve is provided between the filter chambers and the clean room. An air outlet is provided on the side of the clean room away from the filter chambers. A differential pressure gauge, one end of which extends into the filter chamber and the other end of which extends into the cleanroom, is used to measure the pressure difference between the filter chamber and the cleanroom.

2. The air filter element replacement device according to claim 1, characterized in that, The filter element includes a primary filter element disposed at the air intake and a secondary filter element disposed between the filtration chamber and the clean room.

3. The air filter element replacement device according to claim 1, characterized in that, Also includes: An alarm, connected to the differential pressure gauge, is used to provide an alarm prompt for filter replacement.

4. The air filter element replacement device according to claim 1, characterized in that, A rain cover is installed at the air intake.

5. The air filter element replacement device according to claim 1, characterized in that, The filtration chamber is provided with an openable door on the side away from the cleanroom.

6. The air filter element replacement device according to claim 1, characterized in that, The differential pressure gauge head is located outside the clean room.

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