Wind speed adjustable static pressure filter

Abstract

The utility model provides a kind of static pressure filter of wind speed adjustable, it is related to air filter device technical field, it includes filter box, and filter box top is separately provided with air inlet and air outlet, and the net board is fixedly arranged in filter box inside near air inlet, and the filter assembly is fixedly arranged in filter box inside near air outlet, further include the air inlet adjusting mechanism of fixed setting in filter box top and with air inlet intercommunication, it includes adjusting box and a pair of adjusting plate of relative sliding setting in adjusting box, and adjusting box top intercommunication is provided with the air inlet of with outside fan intercommunication, and a plurality of air holes are provided on adjusting plate, and two adjusting plates can be slid to mutually superimposed and the air inlet is shielded, by sliding built-in a pair of adjusting plate, utilize the coincidence area change of air hole on adjusting plate directly control the effective cross-sectional area of air inlet, realize the stepless regulation to the air intake volume;Adjusting plate can also produce preliminary flow effect to air flow, reduce wind speed fluctuation, so that the airflow distribution in box body keeps stable.

Description

Technical Field

[0001] This utility model relates to the field of air filtration device technology, and in particular to a static pressure filter with adjustable wind speed. Background Technology

[0002] Static pressure filters are widely used in ventilation and air purification. Their core working principle is to use a closed box structure to create a stable and uniform static pressure environment inside, so that the air entering the box can be evenly dispersed and penetrate the entire surface of the filter material under pressure, thereby achieving a large air volume, low resistance and efficient and stable filtration effect.

[0003] However, existing static pressure filters have significant shortcomings in airflow control. The adjustment of the air intake volume relies entirely on the frequency conversion control of the downstream fan. This single adjustment method leads to many limitations in practical applications. For example, when the system needs to reduce the airflow, it can only be achieved by reducing the fan speed. However, the efficiency of the fan decreases significantly and energy consumption increases when running at low frequency. Furthermore, the frequency conversion adjustment of the fan requires a certain response time, and it is not easy to control the adjustment accuracy for small changes in airflow. The above problems limit the flexibility and adaptability of static pressure filtration devices under different operating conditions. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a static pressure filter with adjustable airflow, which solves the problems of existing technologies where the adjustment of the air intake size depends entirely on the frequency conversion control of the downstream fan, the fan efficiency drops significantly and energy consumption increases when running at low frequencies, the response time is lagging and the adjustment accuracy is not easy to control.

[0005] According to an embodiment of this utility model, a static pressure filter with adjustable wind speed includes a filter box, an air inlet and an air outlet respectively provided on the top of the filter box, a mesh plate fixedly provided inside the filter box near the air inlet, a filter assembly fixedly provided inside the filter box near the air outlet, and an air inlet adjustment mechanism. The air inlet adjustment mechanism is fixedly provided on the top of the filter box and communicates with the air inlet. It includes an adjustment box and a pair of adjustment plates slidably disposed in the adjustment box. An air inlet is provided on the top of the adjustment box and communicates with an external fan. Several air passage holes are provided on the adjustment plates. The two adjustment plates can slide to overlap each other and block the air inlet.

[0006] The technical principle of this utility model is as follows: When it is necessary to adjust the air intake, a pair of adjustment plates are driven to slide relative to each other in the adjustment box. By changing the overlapping area of ​​the air passage holes on the two adjustment plates, the effective ventilation section is precisely adjusted. When the air intake passes through the adjustment plate, the dynamic pressure is reduced by the flow equalization effect of the perforated plate. Then the airflow enters the static pressure chamber in the filter box for further balanced diffusion and finally penetrates the filter component evenly, thereby achieving rapid and precise control of the air intake.

[0007] Furthermore, a bidirectional lead screw is rotatably provided on one side of the adjustment box, and the two adjustment plates are respectively engaged with the bidirectional lead screw in opposite directions.

[0008] Furthermore, a limit rod is fixedly installed parallel to the other side inside the adjustment box, and the two adjustment plates are slidably connected to the limit rod respectively.

[0009] Furthermore, one end of the bidirectional lead screw passes through the adjustment box and is fixedly connected to a rotating handle.

[0010] Furthermore, the air passages on the adjustment plate are arranged in an alternating pattern, and the air passages on two adjustment plates can slide to not overlap, partially overlap, or completely overlap.

[0011] Furthermore, the filter box is fixedly equipped with a partition that separates the air inlet and air outlet, so that a U-shaped air duct is formed inside the box.

[0012] Furthermore, the mesh plate is arc-shaped and fixedly installed directly below the air inlet.

[0013] Furthermore, a water spraying mechanism is fixedly installed on one side of the filter box. The water spraying mechanism includes a water supply pipe and multiple sets of nozzles connected and fixed on the water supply pipe. The water supply pipe passes through the filter box, and the nozzles are fixedly installed above the screen.

[0014] Furthermore, a drainage trough is fixedly installed at the bottom of the filter box, the drainage trough is inclined, and a drainage pipe is connected to the lowest point of the drainage trough.

[0015] Furthermore, the filter assembly includes a gas-liquid filter screen, which is fixedly disposed directly below the air outlet.

[0016] Compared with existing technologies, this utility model has the following advantages: by sliding a pair of built-in adjusting plates, the effective cross-sectional area of ​​the air inlet channel is directly controlled by the change in the overlapping area of ​​the air passage holes on the adjusting plates, thus realizing stepless adjustment of the air intake volume; the adjusting plates can also produce a preliminary flow equalization effect on the airflow, effectively reducing wind speed fluctuations and maintaining a stable airflow distribution in the filter box; it fundamentally solves the problems of low energy efficiency, slow response, and limited control precision of traditional fan frequency conversion adjustment methods, and significantly improves the adaptability and energy-saving effect of the equipment under different working conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the air volume adjustment mechanism according to an embodiment of the present utility model.

[0019] Figure 3 This is a cross-sectional schematic diagram of the overall structure of an embodiment of the present utility model.

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0021] In the above attached diagram: 1. Filter box; 11. Air inlet; 12. Air outlet; 13. Partition; 2. Adjustment box; 21. Air inlet; 22. Adjustment plate; 221. Connecting seat; 222. Air passage hole; 23. Two-way lead screw; 231. Rotating seat; 232. Rotating handle; 24. Limiting rod; 25. Clearing part; 3. Mesh plate; 31. Mesh; 4. Gas-liquid filter screen; 5. Water spray mechanism; 51. Water supply pipe; 511. Water inlet pipe; 512. Nozzle; 6. Drainage trough; 61. Drainage pipe. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1-3 As shown in the figure, this utility model embodiment proposes a static pressure filter with adjustable wind speed, which includes a filter box 1. The bottom of the filter box 1 is fixed by bolts. An air inlet 11 and an air outlet 12 communicating with the inside and outside are respectively fixedly arranged on both sides of the top of the filter box 1. The air outlet 12 is connected to the air-using equipment. A mesh plate 3 is fixedly arranged in the filter box 1 near the air inlet 11. A filter assembly is fixedly arranged in the filter box 1 near the air outlet 12. The static pressure filter also includes an air inlet adjustment mechanism. The air inlet adjustment mechanism is fixedly arranged on the top of the filter box 1 and communicates with the air inlet 11. It includes an adjustment box 2 and a pair of adjustment plates 22 that are slidably arranged in the adjustment box 2. An air inlet 21 is connected to the top of the adjustment box 2 and communicates with an external fan. Several air passage holes 222 are provided on the adjustment plates 22. The two adjustment plates 22 can slide to overlap each other and block the air inlet 11.

[0024] In this exemplary embodiment, the air inlet 21 and the air outlet 11 are preferably coaxially arranged, and are vertically connected above and below the regulating box 2 respectively, forming a continuous, stable and sealed air passage, which effectively reduces the pressure loss and eddy phenomenon caused by airflow turning. The two regulating plates 22 are arranged in an alternating upper and lower layer sliding arrangement, so that the two regulating plates 22 can slide close to the air outlet 11 until they overlap each other. The width of the regulating plate 22 needs to be greater than that of the air outlet 11 to ensure that the regulating plate 22 can completely cover the ventilation section and avoid edge leakage. The specific shape of the regulating plate 22 is set according to the actual situation and is not limited here. The regulating box 2 is also provided with clearance portions 25 on both sides for the regulating plate 22 to slide and embed, so as to ensure the overall sealing of the regulating box 2.

[0025] The technical principle of this utility model is as follows: When it is necessary to adjust the air intake, a pair of adjusting plates 22 are driven to slide relative to each other in the adjusting box 2. By changing the overlapping area of ​​the air passage holes 222 on the two adjusting plates 22, the effective ventilation cross section is precisely adjusted. When the air intake passes through the adjusting plates 22, the dynamic pressure is reduced by the flow equalization effect of the perforated plates. Then the airflow enters the static pressure chamber in the filter box 1 for further balanced diffusion, and finally penetrates the filter assembly evenly, thereby achieving rapid and precise control of the air intake.

[0026] This invention achieves stepless adjustment of the air intake volume by directly controlling the effective cross-sectional area of ​​the air intake channel through the overlapping area of ​​the air passage holes 222 on the sliding built-in pair of regulating plates 22. The regulating plates 22 can also produce a preliminary flow equalization effect on the airflow, effectively reducing wind speed fluctuations and maintaining a stable airflow distribution inside the filter box 1. It fundamentally solves the problems of low energy efficiency, slow response, and limited control precision of traditional fan frequency conversion regulation methods, and significantly improves the adaptability and energy-saving effect of the equipment under different working conditions.

[0027] like Figure 1-2As shown, according to another embodiment, a bidirectional lead screw 23 is rotatably disposed on one side of the adjusting box 2, and the two adjusting plates 22 are respectively threaded into the bidirectional lead screw 23 in opposite directions. Specifically, a plurality of rotating seats 231 are axially fixedly disposed on the side of the adjusting box 2 near the air inlet 11, and the bidirectional lead screw 23 is rotatably disposed in the rotating seats 231. A connecting seat 221 is fixedly connected to one side of the adjusting plate 22, and the two connecting seats 221 are provided with internal threads in opposite directions, and are respectively threaded into the opposite-direction rods of the bidirectional lead screw 23, so that the two connecting seats 221 are threaded into each other, and the two connecting seats 221 are respectively threaded into each other, and the two connecting seats 221 are respectively threaded into the opposite-direction rods of the bidirectional lead screw 23, so that the two connecting seats 221 are respectively threaded into the opposite-direction rods of the bidirectional lead screw 23 ... and the two connecting seats 221 are respectively threaded into the opposite-direction rods of the bidirectional lead screw 23, and the two connecting seats 221 are respectively threaded into the opposite-direction rods of the bidirectional lead screw 23, and the two connecting seats 221 are respectively threaded into the The connecting plates can slide synchronously in opposite directions at equal distances when the bidirectional lead screw 23 rotates. Based on the above configuration, the bidirectional lead screw 23 ensures stability and centering accuracy during transmission and realizes synchronous sliding of the two plates driven by a single power input, ensuring symmetrical changes in the shielding area of ​​the air inlet 11 and the smoothness of the adjustment process. The synchronous reverse sliding of the two adjusting plates 22 also effectively avoids the problems of uneven load or air volume that may occur during single-plate adjustment, making the cross-sectional change of the airflow channel uniform and continuous, avoiding sudden pressure changes in the static pressure chamber during the adjustment process, and ultimately achieving efficient, accurate and stable air volume adjustment.

[0028] like Figure 1-2 As shown, according to another embodiment, further, a limiting rod 24 is fixedly and parallel to the other side of the adjusting box 2, and the two adjusting plates 22 are slidably connected to the limiting rod 24 respectively. Specifically, the limiting rod 24 is fixedly connected to the other side of the adjusting box 2 parallel to the bidirectional lead screw 23, and another connecting seat 221 is symmetrically fixedly provided on the side of the adjusting plate 22 away from the bidirectional lead screw 23. The connecting seat 221 is slidably sleeved on the limiting rod 24. Based on the above configuration, the limiting rod 24 provides a stable axial guiding constraint for the adjusting plate 22, effectively limiting the radial offset or torsion that may occur during the sliding process of the adjusting plate 22. The parallel arrangement of the limiting rod 24 and the bidirectional lead screw 23 together constitutes a double guiding support mechanism, which significantly enhances the linearity and synchronization accuracy of the movement of the adjusting plate 22, and avoids jamming or asynchrony problems that may be caused by unilateral drive.

[0029] like Figure 1-2 As shown, according to another embodiment, one end of the bidirectional lead screw 23 passes through the adjustment box 2 and is fixedly connected to a handle 232. Based on the above configuration, the rotation of the bidirectional lead screw 23 can be precisely controlled by rotating the handle 232, thereby driving the two adjustment plates 22 to achieve synchronous reverse sliding. It should be noted that the connection part at the through point adopts a sealed structure, which ensures that the bidirectional lead screw 23 can rotate freely while effectively preventing air leakage and maintaining the airtightness inside the adjustment box 2. In addition, the handle 232 can also be replaced with a servo motor, stepper motor or electric actuator and other drive devices to further improve the automation level and working condition adaptability of the device.

[0030] like Figure 1-2 As shown, according to another embodiment, the air passage holes 222 on the regulating plate 22 are arranged in an alternating array, so that the two regulating plates 22 can form multiple ventilation states such as non-overlapping, semi-overlapping and fully overlapping during relative sliding. Based on the above settings, the air intake volume can be finely adjusted by precisely controlling the effective ventilation cross-sectional area of ​​the air passage holes 222. The alternating hole structure can effectively disperse the airflow during the adjustment process, avoid the formation of a straight airflow channel, and significantly improve the uniformity of airflow distribution. At the same time, the regulating plate 22 can maintain sufficient structural strength and stability in different opening states, making the airflow control more stable and continuous, and achieving the final high-precision and linear airflow adjustment effect.

[0031] like Figure 1-3 As shown, according to another embodiment, a partition 13 is fixedly installed inside the filter box 1 to separate the air inlet and air outlet, forming a U-shaped air duct inside the box. Based on the above arrangement, the partition 13 divides the interior of the filter box 1 into independent air inlet and air outlet chambers, forcing the airflow to enter from the air inlet 11 and flow along the U-shaped path, significantly increasing the flow path and extending the residence time of the airflow inside the box, allowing the air to diffuse and equalize more fully. At the same time, the U-shaped air duct can use centrifugal force to pre-separate heavier particles in the airflow, reducing the dust load that directly impacts the filter components, thereby improving the overall filtration efficiency and the uniformity of airflow distribution.

[0032] like Figure 1-4 As shown, according to another embodiment, the mesh plate 3 is arc-shaped and fixedly disposed directly below the air inlet 11, and a plurality of mesh holes 31 are evenly distributed on the mesh plate 3. Based on the above configuration, the unique curved surface structure of the arc-shaped mesh plate 3 can play a good role in guiding and diffusing the airflow entering the box. The evenly distributed mesh holes 31 can further divide the concentrated airflow into multiple fine streams, effectively reducing the airflow velocity and dynamic pressure, so that the airflow can be more fully dispersed when entering the filter box 1, providing more uniform and stable airflow input conditions for subsequent filter components.

[0033] like Figure 1-4As shown, according to another embodiment, a water spraying mechanism 5 is also fixedly installed on one side of the filter box 1. The water spraying mechanism 5 includes a water supply pipe 51 and multiple sets of nozzles 512 connected to and fixed on the water supply pipe 51. The water supply pipe 51 is fixed on the outer wall of the filter box 1 and connected to an inlet pipe 511. One end of the water supply pipe 51 is divided into two branches that pass through the filter box 1. The multiple sets of nozzles 512 are connected to the water supply pipe 51 that enters the filter box 1 and are fixedly installed above the mesh plate 3. Based on the above configuration, the two water supply branches ensure the symmetry and stability of the water supply distribution. The multiple sets of nozzles 512 make the spray range fully cover the air intake airflow channel, forming a uniform water curtain upstream of the airflow, pre-humidifying the air entering the box, effectively increasing its weight and adsorbing particulate pollutants, and significantly reducing the amount of dust adhering to the filter material surface. The water-air mixing process can also achieve the effect of cooling and humidifying, significantly improving the system's adaptability to high temperature and high dust conditions, enhancing the overall filtration efficiency, and extending the service life of the filter material.

[0034] like Figure 1-4 As shown, according to another embodiment, further, a drainage trough 6 is fixedly provided at the bottom of the filter box 1. The drainage trough 6 is inclined, and a drainage pipe 61 is connected to the lowest point of the drainage trough 6. Based on the above configuration, the inclined drainage trough 6 can make the spray wastewater and settled pollutants flow automatically to the lowest point, and the drainage pipe 61 ensures that the wastewater can be quickly and thoroughly discharged from the system, reducing the deposition and adhesion of pollutants at the bottom of the box.

[0035] like Figure 1-4 As shown, according to another embodiment, the filter assembly includes a gas-liquid filter 4, which has a unique three-dimensional mesh structure. The gas-liquid filter 4 is fixedly disposed directly below the air outlet 12. Based on the above configuration, when pre-treated humid air passes through, the gas-liquid filter 4 can effectively capture residual fine water mist and solid particles in the air, achieving efficient gas-liquid separation and ensuring that the airflow is fully purified before final discharge.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A static pressure filter with adjustable wind speed, comprising a filter box (1), wherein an air inlet (11) and an air outlet (12) are respectively provided on the top of the filter box (1), a mesh plate (3) is fixedly provided inside the filter box (1) near the air inlet (11), and a filter assembly is fixedly provided inside the filter box (1) near the air outlet (12), characterized in that, It also includes an air intake adjustment mechanism, which is fixedly installed on the top of the filter box (1) and communicates with the air inlet (11). It includes an adjustment box (2) and a pair of adjustment plates (22) that are slidably disposed in the adjustment box (2). An air inlet (21) is provided on the top of the adjustment box (2) and is connected to an external fan. Several air passage holes (222) are provided on the adjustment plates (22). The two adjustment plates (22) can slide to overlap each other and block the air inlet (11).

2. The static pressure filter with adjustable wind speed as described in claim 1, characterized in that: A bidirectional lead screw (23) is rotatably installed on one side of the adjustment box (2), and the two adjustment plates (22) are respectively threaded into the bidirectional lead screw (23) in opposite directions.

3. The static pressure filter with adjustable wind speed as described in claim 2, characterized in that: A limit rod (24) is fixedly installed parallel to the other side inside the adjustment box (2), and the two adjustment plates (22) are slidably connected to the limit rod (24) respectively.

4. The static pressure filter with adjustable wind speed as described in claim 2, characterized in that: One end of the bidirectional lead screw (23) passes through the adjustment box (2) and is fixedly connected to a handle (232).

5. The static pressure filter with adjustable wind speed as described in claim 1, characterized in that: The air passage holes (222) on the adjustment plate (22) are arranged in an alternating array, and the air passage holes (222) on the two adjustment plates (22) can slide to not overlap, half overlap or completely overlap.

6. The static pressure filter with adjustable wind speed as described in claim 1, characterized in that: The filter box (1) is fixedly provided with a partition (13) that separates the air inlet and the air outlet, so that a U-shaped air duct is formed inside the box.

7. A static pressure filter with adjustable wind speed as described in claim 6, characterized in that: The mesh plate (3) is arc-shaped and fixedly installed directly below the air inlet (11).

8. The static pressure filter with adjustable wind speed as described in claim 7, characterized in that: A water spraying mechanism (5) is also fixedly installed on one side of the filter box (1). The water spraying mechanism (5) includes a water supply pipe (51) and multiple sets of nozzles (512) connected and fixed on the water supply pipe (51). The water supply pipe (51) passes through the filter box (1), and the nozzles (512) are fixedly installed above the mesh plate (3).

9. A static pressure filter with adjustable wind speed as described in claim 8, characterized in that: The bottom of the filter box (1) is fixedly provided with a drainage trough (6), the drainage trough (6) is inclined, and the lowest point of the drainage trough (6) is connected to a drainage pipe (61).

10. A static pressure filter with adjustable wind speed as described in claim 6, characterized in that: The filter assembly includes a gas-liquid filter screen (4), which is fixedly disposed directly below the air outlet (12).

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