Automatic filter screen replacing mechanism and method for air treatment system

Abstract

The invention provides an automatic filter screen replacing mechanism and method for an air treatment system, and belongs to the technical field of air treatment.The automatic filter screen replacing mechanism comprises a fresh air handling unit and a filtering replacing assembly, the fresh air handling unit is provided with an air inlet channel and an air inlet, and the filtering replacing assembly comprises a discharging part, a receiving part and a filter screen; due to the fact that the whole filter screen is synchronously moved by the feeding part and the receiving part, the filter screen part located at the air inlet is kept brand new, the design abandons the traditional method that the filter screen at the air inlet needs to be regularly and independently replaced, and material waste caused by frequent replacement of the filter screen is avoided; and more importantly, the labor cost and the maintenance time are greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of air treatment, and relates to an automatic filter replacement mechanism and method for an air treatment system. Background Art

[0002] In modern industrial production environments, in order to ensure that the working conditions inside the workshop are optimal, the industry generally requires that the production workshop be equipped with a centralized air treatment system. The main responsibility of this system is to regulate the temperature and humidity in the room, while maintaining or improving the cleanliness of the air, which is crucial to ensuring product quality and employee health.

[0003] When the centralized air treatment system is in operation, in order to provide fresh air and maintain indoor air quality, the system needs to continuously replenish a certain proportion of fresh air. Before the fresh air enters the centralized air treatment system for deep processing, an important pre-treatment step is to install filters at the fresh air inlet to achieve primary filtration. These filters can effectively intercept large particles such as dust, pollen, etc., thereby reducing the burden on subsequent purification equipment and improving the efficiency and life of the overall system.

[0004] In summary, although some existing technical solutions have solved the problem of centralized air treatment system filters filtering fresh air, since most of the filters are cut in advance and then replaced manually, a lot of human resources are wasted and there is much room for improvement. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the prior art and to propose an automatic filter replacement mechanism for an air treatment system, comprising:

[0006] A fresh air unit is provided with an air inlet channel and an air inlet, the air inlet channel is connected with the air inlet, and the air inlet is used to communicate with the outside world;

[0007] A filter replacement component includes a discharge piece, a receiving piece and a filter screen, wherein the discharge piece and the receiving piece are respectively located on both sides of the fresh air unit, one end of the filter screen is received by the discharge piece, and the other end of the filter screen can be received by the receiving piece, the filter screen always covers the air inlet, and the receiving piece can receive the filter screen to drive the filter screen to move from the discharge piece toward the receiving piece.

[0008] In the above-mentioned automatic filter replacement mechanism of an air treatment system, it also includes a first motor, the material receiving part is configured as a material receiving shaft, the end of the filter close to the material receiving reel is connected to the material receiving shaft and can be rotatably received by the material receiving shaft, the material receiving shaft is connected to the first motor, and the first motor can drive the material receiving shaft to rotate.

[0009] In the above-mentioned automatic filter replacement mechanism of an air treatment system, it also includes a second motor, the discharge member is configured as a discharge shaft, the filter is wound around the discharge shaft close to the discharge reel, the discharge shaft is connected to the second motor, and the second motor can drive the discharge shaft to rotate.

[0010] In the above-mentioned automatic filter replacement mechanism of an air treatment system, it also includes a controller and two pressure sensors, and the two pressure sensors are respectively arranged on the inner and outer sides of the fresh air unit relative to the air inlet, the first motor and the second motor are both electrically connected to the controller, and the two pressure sensors are electrically connected to the controller and control the operation of the first motor and the second motor through the controller.

[0011] In the above-mentioned automatic filter replacement mechanism of an air treatment system, it also includes a pressing frame, which is located at the air inlet and can be close to or far away from the air inlet. A pressing space is formed between the pressing frame and the fresh air unit, and the filter is located in the pressing space.

[0012] In the above-mentioned automatic filter replacement mechanism of an air treatment system, it also includes a pressing drive element, which is connected to the fresh air unit, and the pressing frame is connected to the output shaft of the pressing drive element. The pressing drive element can drive the pressing frame to approach or move away from the air inlet.

[0013] In the above-mentioned automatic filter replacement mechanism of an air treatment system, it also includes a controller and two pressure sensors, the two pressure sensors are respectively arranged on the inner and outer sides of the fresh air unit relative to the air inlet, the suppression drive element is electrically connected to the controller, and the two pressure sensors are electrically connected to the controller and the suppression drive element is controlled to work through the controller.

[0014] The purpose of the present invention is to solve the above problems in the prior art and to propose a method for automatically replacing a filter screen in an air treatment system, which also includes the following steps:

[0015] S1: Continuously detect the pressure of the fresh air unit relative to the inside and outside of the air inlet through two pressure sensors to obtain the actual pressure difference;

[0016] S2: When the actual pressure difference reaches a preset value, the first motor drives the receiving shaft to rotate the receiving filter screen, thereby driving the filter screen to move from the material discharging member toward the material receiving member.

[0017] In the above-mentioned method for automatically replacing filters in an air treatment system, in step S1, the pressing frame always presses the filter on the fresh air unit; in step S2, when the actual pressure difference reaches a preset value and before the first motor drives the receiving shaft to rotate, the pressing frame is driven away from the fresh air unit by the pressing driving element to release the filter; in step S2, after the filter movement is completed, the pressing frame is driven close to the fresh air unit by the pressing driving element to press the filter on the fresh air unit again.

[0018] In the above-mentioned method for automatically replacing filters in an air treatment system, in step S2, when the first motor drives the material receiving shaft to rotate, the second motor drives the material discharging shaft to rotate at the same time to release the filter.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Since the entire filter is moved synchronously by the discharge part and the receiving part, the filter part at the air inlet remains brand new. This design abandons the traditional method of regularly replacing the filter at the air inlet. It not only avoids the waste of materials caused by frequent replacement of filters, but more importantly, greatly reduces labor costs and maintenance time.

[0021] 2. Since the filter can be wound and stored by rotating the receiving shaft and the discharging shaft, the winding storage method can not only effectively reduce the space occupied by the filter, but also ensure that the filter part blocked by dust will not contact the unused clean filter part, thereby avoiding secondary pollution.

[0022] 3. The gas pressure changes on both sides of the filter are detected by two pressure sensors to evaluate the working status of the filter. It is possible to determine whether the filter is blocked and replace it in time, so that the filter is kept in the best working condition, ensuring the efficient operation of the entire system and reducing the need for manual intervention.

[0023] 4. Pressing the filter by a pressing frame can ensure that the filter will not be worn due to airflow deviation or swing during daily work. This not only increases the service life of the filter, but also makes the internal and external pressure difference detection more stable.

[0024] 5. When the two pressure sensors detect that the air pressure difference on both sides of the filter reaches the set value, the signal can be transmitted to the first motor to drive the receiving shaft to rotate the receiving filter, and move the filter from the discharge part toward the receiving part. The distance the filter moves is the same as the distance of the fresh air inlet, which can minimize the length of the filter consumed each time the filter is replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the fresh air unit of the present invention.

[0027] Figure 3 It is the front view of the present invention.

[0028] Figure 4 for Figure 3 Cross-sectional view at AA in the middle.

[0029] In the figure:

[0030] 1. Fresh air unit; 11. Air inlet channel; 12. Air inlet; 2. Filter replacement assembly; 21. Material discharge part; 22. Material receiving part; 23. Filter; 3. Pressure sensor; 4. Pressing frame; 41. Pressing space. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The specific embodiments described herein are merely examples of the present invention. A person skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but they will not deviate from the present invention or exceed the scope defined by the appended claims.

[0037] like Figure 1-Figure 4 As shown, an automatic filter replacement mechanism for an air treatment system includes: a fresh air unit 1 and a filter replacement component 2.

[0038] The fresh air unit 1 is provided with an air inlet channel 11 and an air inlet port 12, the air inlet channel 11 is connected with the air inlet port 12, and the air inlet port 12 is used to communicate with the outside.

[0039] Among them, the filter replacement component 2 includes a discharge piece 21, a receiving piece 22 and a filter 23. The discharge piece 21 and the receiving piece 22 are respectively located on both sides of the fresh air unit 1. One end of the filter 23 is received by the discharge piece 21, and the other end of the filter 23 can be received by the receiving piece 22. The filter 23 always covers the air inlet 12. The receiving piece 22 can receive the filter 23 to drive the filter 23 to move from the discharge piece 21 toward the receiving piece 22.

[0040] Specifically, when the filter 23 at the air inlet 12 needs to be replaced, the receiving member 22 will collect one end of the filter 23, and the discharging member 21 will simultaneously place the new filter 23 at the air inlet 12, thereby achieving the purpose of replacing the filter 23.

[0041] In this embodiment, since the entire filter 23 is moved synchronously by the discharge piece 21 and the receiving piece 22, the filter 23 portion at the air inlet 12 remains brand new. This design abandons the traditional method of regularly replacing the filter 23 at the air inlet 12, which not only avoids the waste of materials caused by frequent replacement of the filter 23, but more importantly, greatly reduces labor costs and maintenance time.

[0042] like Figure 1-Figure 4As shown, on the basis of the above embodiment, it also includes a first motor (not shown in the figure), the material receiving part 22 is configured as a material receiving shaft, the filter screen 23 is connected to the material receiving shaft at one end close to the material receiving reel and can be rotatably received by the material receiving shaft, the material receiving shaft is connected to the first motor, and the first motor can drive the material receiving shaft to rotate.

[0043] like Figure 1-Figure 4 As shown, on the basis of the above embodiment, it also includes a second motor (not shown in the figure), the discharge member 21 is configured as a discharge shaft, the filter screen 23 is wound around the discharge shaft close to the discharge reel, the discharge shaft is connected to the second motor, and the second motor can drive the discharge shaft to rotate.

[0044] In this embodiment, since the filter 23 can be wound and stored by rotating the receiving shaft and the discharging shaft, the winding storage method can not only effectively reduce the space occupied by the filter 23, but also ensure that the part of the filter 23 blocked by dust will not contact the unused clean part of the filter 23, thereby avoiding secondary contamination.

[0045] like Figure 1-Figure 4 As shown, on the basis of the above embodiment, it also includes a controller (not shown in the figure) and two pressure sensors 3, the two pressure sensors 3 are respectively arranged on the inner and outer sides of the fresh air unit 1 relative to the air inlet 12, the first motor and the second motor are both electrically connected to the controller, and the two pressure sensors 3 are electrically connected to the controller and control the operation of the first motor and the second motor through the controller.

[0046] Specifically, two pressure sensors 3 are respectively arranged on the inner and outer sides of the air inlet 12, and can be used to respectively detect the air pressure difference on both sides of the filter 23. When the air pressure difference reaches a set value, the first motor and the second motor can be driven by the controller to move the filter 23.

[0047] In this embodiment, two pressure sensors 3 are used to detect changes in gas pressure on both sides of the filter 23, thereby evaluating the working status of the filter 23. Whether the filter 23 is blocked can be determined and replaced in a timely manner, thereby maintaining the filter 23 in the best working state, ensuring the efficient operation of the entire system, and reducing the need for manual intervention.

[0048] like Figure 1-Figure 4 As shown, on the basis of the above embodiment, it also includes a pressing frame 4, which is located at the air inlet 12 and can be close to or far away from the air inlet 12, and a pressing space 41 is formed between the pressing frame 4 and the fresh air unit 1, and the filter 23 is located in the pressing space 41.

[0049] Specifically, when the two pressure sensors 3 detect that the air pressure difference on both sides of the filter 23 reaches the set value, the pressing frame 4 moves away from the air inlet 12, and the filter 23 is moved and replaced. After the filter 23 is replaced, the pressing frame 4 moves close to the air inlet 12 to press the filter 23 to prevent it from moving.

[0050] In this embodiment, the filter 23 is pressed by the pressing frame 4 to ensure that the filter 23 will not be worn due to deviation or swing of airflow during daily work, which not only increases the service life of the filter 23, but also makes the detection of the internal and external air pressure difference more stable.

[0051] like Figure 1-Figure 4 As shown, on the basis of the above embodiment, it also includes a pressing drive element (not shown in the figure), the pressing drive element is connected to the fresh air unit 1, the pressing frame 4 is connected to the output shaft of the pressing drive element, and the pressing drive element can drive the pressing frame 4 to approach or move away from the air inlet 12.

[0052] In this embodiment, the pressing frame 4 is driven to move by the pressing driving element, and there is no need to move the pressing frame 4 manually, thereby reducing the waste of human resources.

[0053] like Figure 1-Figure 4 As shown, on the basis of the above embodiment, it also includes a controller and two pressure sensors 3, the two pressure sensors 3 are respectively arranged on the inner and outer sides of the fresh air unit 1 relative to the air inlet 12, the suppression drive element is electrically connected to the controller, and the two pressure sensors 3 are electrically connected to the controller and the suppression drive element is controlled to work through the controller.

[0054] Specifically, when the two pressure sensors 3 detect that the air pressure difference on both sides of the filter 23 reaches the set value, they will transmit a signal to the controller, and the controller will then transmit the signal to the pressing drive element, causing it to drive the pressing frame 4 away from the air inlet 12. After the pressing frame 4 completes the movement, the discharge part 21 and the receiving part 22 are started to move and replace the filter 23, so that the new filter 23 partially covers the air inlet 12. Finally, the pressing drive element drives the pressing frame 4 close to the air inlet 12 to fix the filter 23.

[0055] In this embodiment, the controller controls the pressing frame 4 and the filter replacement assembly 2 so that the filter 23 can be replaced efficiently according to the set steps, thereby reducing manual intervention and greatly improving work efficiency.

[0056] like Figure 1-Figure 4 As shown, a method for automatically replacing a filter screen in an air treatment system also includes the steps of:

[0057] S1: Continuously detect the pressure of the fresh air unit 1 relative to the inside and outside of the air inlet 12 through two pressure sensors 3 to obtain the actual pressure difference;

[0058] S2: When the actual pressure difference reaches a preset value, the first motor drives the receiving shaft to rotate the receiving filter 23, thereby driving the filter 23 to move from the discharge member 21 toward the receiving member 22.

[0059] In this embodiment, when the two pressure sensors 3 detect that the air pressure difference on both sides of the filter 23 reaches the set value, the signal can be transmitted to the first motor to drive the collecting shaft to rotate the collecting filter 23, and move the filter 23 from the discharge part 21 toward the collecting part 22, wherein the movement distance of the filter 23 is the same as the distance of the fresh air inlet, which can minimize the length of the filter 23 consumed each time the filter 23 is replaced.

[0060] like Figure 1-Figure 4 As shown, on the basis of the above-mentioned embodiment, in step S1, the pressing frame 4 always presses the filter 23 on the fresh air unit 1; in step S2, when the actual pressure difference reaches the preset value and before the first motor drives the receiving shaft to rotate, the pressing frame 4 is driven away from the fresh air unit 1 by the pressing driving element to release the filter 23; in step S2, after the filter 23 has completed its movement, the pressing frame 4 is driven close to the fresh air unit 1 by the pressing driving element to press the filter 23 on the fresh air unit 1 again.

[0061] like Figure 1-Figure 4 As shown, based on the above embodiment, in step S2, when the first motor drives the material receiving shaft to rotate, the second motor drives the material discharging shaft to rotate at the same time to release the filter screen 23.

[0062] In this embodiment, when the two pressure sensors 3 detect that the air pressure difference on both sides of the filter 23 reaches the set value, the signal will be transmitted to the controller, and the controller will then transmit the signal to the pressing drive element, so that it drives the pressing frame 4 to move away from the air inlet 12. After the pressing frame 4 completes the movement, the discharge member 21 and the receiving member 22 are started to move and replace the filter 23, so that the new filter 23 partially covers the air inlet 12. Finally, the pressing drive element drives the pressing frame 4 close to the air inlet 12 to fix the filter 23. While the first motor drives the receiving shaft to receive the material, the second motor synchronously drives the discharge shaft to discharge the material, which can ensure that the filter 23 always remains in a taut state during the movement, and can ensure the stability of the filter 23 during the replacement process.

Claims

1. An automatic filter replacement mechanism for an air handling system, characterized in that: include: A fresh air unit is provided with an air inlet channel and an air inlet, the air inlet channel is connected with the air inlet, and the air inlet is used to communicate with the outside world; A filter replacement component includes a discharge piece, a receiving piece and a filter screen, wherein the discharge piece and the receiving piece are respectively located on both sides of the fresh air unit, one end of the filter screen is received by the discharge piece, and the other end of the filter screen can be received by the receiving piece, the filter screen always covers the air inlet, and the receiving piece can receive the filter screen to drive the filter screen to move from the discharge piece toward the receiving piece.

2. The automatic filter replacement mechanism for an air handling system according to claim 1, characterized in that: It also includes a first motor, the material receiving part is configured as a material receiving shaft, the end of the filter screen close to the material receiving reel is connected to the material receiving shaft and can be rotatably received by the material receiving shaft, the material receiving shaft is connected to the first motor, and the first motor can drive the material receiving shaft to rotate.

3. The automatic filter replacement mechanism for an air handling system according to claim 2, characterized in that: It also includes a second motor, the unloading member is configured as a unloading shaft, the filter screen is wound around the unloading shaft close to the unloading reel, the unloading shaft is connected to the second motor, and the second motor can drive the unloading shaft to rotate.

4. The automatic filter replacement mechanism for an air handling system according to claim 3, characterized in that: It also includes a controller and two pressure sensors, which are respectively arranged on the inner and outer sides of the fresh air unit relative to the air inlet. The first motor and the second motor are both electrically connected to the controller, and the two pressure sensors are electrically connected to the controller and control the operation of the first motor and the second motor through the controller.

5. The automatic filter replacement mechanism for an air handling system according to claim 1, characterized in that: It also includes a pressing frame, which is located at the air inlet and can be close to or far away from the air inlet. A pressing space is formed between the pressing frame and the fresh air unit, and the filter is located in the pressing space.

6. The automatic filter replacement mechanism for an air handling system according to claim 5, characterized in that: It also includes a pressing drive element, which is connected to the fresh air unit, and the pressing frame is connected to the output shaft of the pressing drive element. The pressing drive element can drive the pressing frame to approach or move away from the air inlet.

7. An automatic filter replacement mechanism for an air handling system as claimed in claim 6, characterized in that: It also includes a controller and two pressure sensors, which are respectively arranged on the inner and outer sides of the fresh air unit relative to the air inlet. The pressing drive element is electrically connected to the controller, and the two pressure sensors are electrically connected to the controller and the pressing drive element is controlled to work through the controller.

8. A method for automatically replacing filters in an air handling system, characterized in that: Includes steps: S1: Continuously detect the pressure of the fresh air unit relative to the inside and outside of the air inlet through two pressure sensors to obtain the actual pressure difference; S2: When the actual pressure difference reaches a preset value, the first motor drives the receiving shaft to rotate the receiving filter screen, thereby driving the filter screen to move from the material discharging member toward the material receiving member.

9. A method for automatically replacing filters in an air handling system as claimed in claim 8, characterized in that: In step S1, the pressing frame always presses the filter onto the fresh air unit; in step S2, when the actual pressure difference reaches the preset value and before the first motor drives the receiving shaft to rotate, the pressing frame is driven away from the fresh air unit by the pressing driving element to release the filter; in step S2, after the filter has finished moving, the pressing frame is driven close to the fresh air unit by the pressing driving element to press the filter onto the fresh air unit again.

10. The method for automatically replacing filters in an air handling system according to claim 8, characterized in that: In step S2, when the first motor drives the material receiving shaft to rotate, the second motor drives the material discharging shaft to rotate at the same time, thereby releasing the filter screen.

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