Air duct flow equalizing speed regulating device

Abstract

The utility model relates to a gas conveying technical field more specifically, relate to a kind of air pipeline current sharing speed regulation device, it includes shell, rotary drive component and be located at the impeller of shell air outlet and with the rotation connection of shell, the power output end of rotary drive component connects impeller;Impeller includes carousel, multiple blades and multiple locking structures, blade is all with carousel by locking structure detachably connected.The utility model overcomes the deficiency of higher cost caused by the need to replace different models of impeller when process requirement is adjusted in prior art, the utility model will blade be set into adjustable installation angle.Through the angle of part blade is adjusted, the non-uniform flow of airflow can be destroyed, the current sharing purpose is realized;By the angle of part or all blade is fine-tuned, airflow axial velocity can be changed, so as to reduce or increase airflow flow and pressure.In response to different working conditions, the entire impeller does not need to be replaced, and equipment investment cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas transportation technology, and more specifically, to an air pipeline flow equalization and speed regulation device. Background Technology

[0002] Centrifugal blowers are key equipment in wastewater treatment plants for maintaining the stable operation of biological treatment systems. In actual operation, blowers face the following technical challenges: first, operational instability due to complex operating conditions; and second, the significant impact of environmental factors (such as temperature and humidity) and process loads (such as seasonal water quality fluctuations) on the air intake conditions of wastewater treatment plants, including changes in media properties and airflow disturbances. High temperatures in summer reduce air density, while low temperatures in winter may cause condensate to enter the airflow. Impurities or non-uniform flow in the intake air can alter the rotational intensity and incident angle of the airflow, causing the impeller inlet flow field to deviate from the design conditions. These changes can easily lead to blower surge, vortexing, and other unstable phenomena, and in severe cases, cause resonance in the casing or rotor, threatening equipment safety.

[0003] Furthermore, different operating conditions require different airflow rates and pressures. Currently, wastewater treatment plants generally use fixed-parameter impeller designs. Although variable frequency speed control can partially alleviate the flow and pressure regulation problem, the adjustment of flow and pressure still depends on the adjustment of impeller geometry parameters. At present, the airflow rate and pressure are changed by shutting down and replacing different models of impellers, but storing multiple different models of impellers leads to high equipment costs. Utility Model Content

[0004] To address the issue of high equipment costs in existing technologies where different impeller models need to be replaced when process requirements are adjusted, this invention provides an air duct flow equalization and speed regulation device that can meet different process requirements and reduce equipment costs.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] An air duct flow equalization and speed regulation device includes a housing, a rotary drive assembly, and an impeller located at the air outlet of the housing and rotatably connected to the housing. The power output end of the rotary drive assembly is connected to the impeller. The impeller includes a turntable, multiple blades, and multiple locking structures. The blades are evenly distributed along the outer circumference of the turntable and are all detachably connected to the turntable through the locking structures.

[0007] The locking structure can be a detachable fastener such as a screw, or a snap-fit ​​connection structure.

[0008] In the above technical solution, when the process requirements are adjusted, some or all of the blades can be removed. After rotating the removed blades by a certain angle, the blades can be locked using the locking structure, thereby achieving the adjustment of the blade installation angle. By adjusting the angles of some of the blades, the non-uniform flow of the air flow can be disrupted to achieve the purpose of uniform flow. At the same time, by finely adjusting the angles of some or all of the blades, the axial velocity of the air flow can be changed, thereby reducing or increasing the air flow rate and pressure. Different numbers of adjusted blades and adjustment angles will result in different final adjustment effects, which specifically need to be determined according to the actual working conditions. That is to say, the above technical solution can achieve the purpose of air flow adjustment without replacing the entire impeller, which can reduce the equipment investment cost.

[0009] Preferably, a plurality of positioning grooves are provided on the turntable, and a plug pin is connected to one end of each blade close to the turntable, and the plug pins are inserted into the positioning grooves one by one. In this solution, after inserting the plug pins into the positioning grooves one by one and then locking the blades, it is possible to prevent the blades from shaking during the locking operation, which may affect the locking operation.

[0010] Preferably, a plurality of anti-rotation protrusions are provided on the outer circumferential surface of the plug pin, and a plurality of anti-rotation card slots are provided on the inner wall of the positioning groove, and the anti-rotation protrusions are engaged with the anti-rotation card slots one by one. During the actual installation process, it is only necessary to deflect the blade by a certain angle and insert it into the positioning groove, so that the anti-rotation protrusion is engaged with the anti-rotation card slot. The cooperation of the anti-rotation protrusion and the anti-rotation card slot can ensure that the deflection angle of the blade will not change during the rotation process.

[0011] Preferably, the anti-rotation protrusion extends along the axial direction of the plug pin, the anti-rotation card slot extends along the axial direction of the positioning groove, and the anti-rotation protrusion can slide linearly along the positioning groove. Such a structure can make the insertion or extraction of the plug pin into or from the positioning groove smoother and more labor-saving.

[0012] Preferably, a first flange ring is provided on the outer circumferential surface of the plug pin, and a plurality of threaded through holes are provided on the first flange ring; a second flange ring is connected to the outer circumferential surface of the turntable, the second flange ring is in contact with the first flange ring, and a plurality of threaded blind holes corresponding to the threaded through holes one by one are provided on the second flange ring; the locking structure includes a plurality of screws, and the screws are threadedly connected to the corresponding threaded through holes and the threaded blind holes. The first flange ring is fixed to the second flange ring by the screws, thereby realizing the connection between the blade and the turntable. The pre-tightening force of the screws can provide a uniform clamping force to resist the centrifugal load during the high-speed rotation of the impeller and prevent the blade from loosening.

[0013] Furthermore, the device also includes a connector, through which the pin and the positioning groove are connected, with the connector located within the positioning groove. The pin is maintained connected to the positioning groove via the connector, thus preventing the blade from falling off and affecting operational efficiency when adjusting the blade rotation angle.

[0014] Furthermore, the connector is an elastic element, capable of extending and retracting along the axial direction of the positioning groove. In its initial state, the connector applies a pulling force to the pin, and the connector is rotatably connected to the positioning groove or the pin about the axis of the positioning groove. It is understood that the connector does not rotate with the blade when the blade rotates. After releasing the locking mechanism, simply pull out the pin, rotate the blade, determine the rotation angle, and release. The pulling force of the connector on the pin quickly pulls the pin into the positioning groove, significantly reducing installation time.

[0015] Preferably, the pin has a receiving groove, and the end of the connector away from the turntable is located within the receiving groove. Providing a receiving groove helps to shorten the axial length of the positioning groove, thereby making the entire impeller structure more compact.

[0016] Preferably, the connector is a spring structure. Compared to elastic material components, spring structures have better elastic deformation capabilities, are more wear-resistant, and have a longer service life and higher reliability.

[0017] Preferably, the outlet end of the housing is provided with a duct connector, and the side of the duct connector away from the housing is provided with a pipe positioning groove. The end of the air duct can be inserted into the pipe positioning groove to form a preliminary connection with the device, so as to facilitate further connection processing between the air duct and the device.

[0018] The beneficial effects of this invention are as follows: By setting the blades to have an adjustable installation angle, the non-uniform flow of air can be disrupted by adjusting the angle of some blades, thus achieving the purpose of flow uniformity. Simultaneously, by fine-tuning the angle of some or all blades, the axial velocity of the airflow can be changed, thereby reducing or increasing the airflow rate and pressure. When dealing with different operating conditions, it is not necessary to replace the entire impeller; only the angle of some or all blades needs to be adjusted to meet the requirements of flow uniformity and deceleration in the air duct, thereby reducing equipment investment costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an air duct flow equalization and speed regulation device.

[0020] Figure 2 A schematic diagram of the impeller structure of an air duct flow equalization and speed regulation device;

[0021] Figure 3 This is a schematic diagram of the pin and the positioning groove;

[0022] Figure 4 This is a schematic diagram of the pin structure.

[0023] In the attached diagram: 1-Outer shell; 2-Rotary drive assembly; 3-Turntable; 301-Positioning groove; 302-Anti-rotation slot; 303-Connecting block; 4-Blade; 5-Locking structure; 6-Pin; 601-Receiving groove; 7-Anti-rotation protrusion; 8-First flange ring; 9-Second flange ring; 901-Threaded blind hole; 10-Connector; 11-Duct connector; 1101-Pipe slot. Detailed Implementation

[0024] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0027] Example 1

[0028] This embodiment is a first embodiment of an air duct flow equalization and speed regulation device, such as Figure 1 and Figure 2 As shown, it includes a housing 1, a rotary drive assembly 2, and an impeller located at the air outlet of the housing 1 and rotatably connected to the housing 1. The power output end of the rotary drive assembly 2 is connected to the impeller. The impeller includes a turntable 3, multiple blades 4, and multiple locking structures 5. The blades 4 are evenly distributed along the outer circumferential surface of the turntable 3 and are all detachably connected to the turntable 3 through the locking structures 5.

[0029] The preferred number of blades 4 is 6, 8 or 12, and in this embodiment, the blades are provided with 6.

[0030] Specifically, the housing 1 has a bracket (not shown in the figure) inside; the rotary drive assembly 2 includes a motor (not shown in the figure) and a rotating shaft. The motor is fixed inside the housing 1 by the bracket. One end of the rotating shaft is connected to the power output end of the motor, and the other end of the rotating shaft is coaxially fixedly connected to the turntable 3.

[0031] The working principle or workflow of this embodiment is as follows: When process requirements are adjusted, some or all of the blades 4 can be removed. The removed blades 4 are rotated at a certain angle and then locked in place using the locking structure 5, thus adjusting the installation angle of the blades 4. By adjusting the angle of some of the blades 4, non-uniform airflow can be disrupted, achieving uniform flow. Simultaneously, by fine-tuning the angle of some or all of the blades 4, the axial velocity of the airflow can be changed, thereby reducing or increasing the airflow rate and pressure. Different numbers and angles of blade 4 adjustment result in different adjustment effects, which must be determined based on the actual operating conditions. In other words, the above technical solution achieves airflow adjustment without replacing the entire impeller, reducing equipment investment costs.

[0032] The beneficial effects of this embodiment are as follows: By setting the blades to have an adjustable installation angle, the non-uniform flow of air can be disrupted and flow uniformity achieved by adjusting the angle of some or all of the blades. Simultaneously, by fine-tuning the angle of some or all of the blades, the axial velocity of the airflow can be changed, thereby reducing or increasing the airflow rate and pressure. When dealing with different operating conditions, it is not necessary to replace the entire impeller; only the angle of some or all of the blades needs to be adjusted to meet the flow uniformity and deceleration requirements of the air duct, thus reducing equipment investment costs.

[0033] Example 2

[0034] This embodiment is a second embodiment of an air duct flow equalization and speed regulation device. This embodiment is similar to embodiment 1, except that it combines... Figures 1 to 4 As shown, the turntable 3 is provided with multiple positioning slots 301, and each blade 4 has a pin 6 connected to the end near the turntable 3. The pins 6 are inserted into the positioning slots 301 one by one. In this scheme, the blade 4 is locked after the pins 6 are inserted into the positioning slots 301 one by one, which can prevent the blade 4 from shaking during the locking process and affecting the locking operation.

[0035] Specifically, multiple connecting blocks 303 are detachably installed on the turntable 3, and positioning grooves 301 are provided on the connecting blocks 303.

[0036] Furthermore, the outer circumferential surface of the pin 6 is provided with multiple anti-rotation protrusions 7, and the inner wall of the positioning groove 301 is provided with multiple anti-rotation slots 302. The anti-rotation protrusions 7 are embedded into the anti-rotation slots 302 and engaged with them. The cooperation between the anti-rotation protrusions 7 and the anti-rotation slots 302 ensures that the deflection angle of the blade 4 will not change during rotation. In actual installation, it is only necessary to deflect the blade 4 at a certain angle and insert it into the positioning groove 301, so that the anti-rotation protrusions 7 are engaged with the anti-rotation slots 302.

[0037] Furthermore, the anti-rotation protrusion 7 extends along the axial direction of the pin 6, forming a strip-shaped anti-rotation protrusion structure. The anti-rotation groove 302 extends along the axial direction of the positioning groove 301, and the anti-rotation protrusion 7 can slide linearly along the positioning groove 301. This structure makes it easier and less strenuous for the pin 6 to be inserted into or removed from the positioning groove 301.

[0038] Furthermore, a first flange ring 8 is provided on the outer circumferential surface of the pin 6, and the first flange ring 8 has four threaded through holes (not shown in the figure); a second flange ring 9 is connected to the outer circumferential surface of the turntable 3. Specifically, the second flange ring 9 is set on the connecting block 303, and the second flange ring 9 has four threaded blind holes 901 corresponding one-to-one with the threaded through holes. The first flange ring 8 and the second flange ring 9 fit together; the locking structure 5 includes multiple screws, which are threadedly connected to the corresponding threaded through holes and threaded blind holes 901. The first flange ring 8 is fixed to the second flange ring 9 by the screws, thereby realizing the connection between the blade 4 and the turntable 3. The screw preload provides a uniform clamping force to resist the centrifugal load when the impeller rotates at high speed and prevent the blade 4 from loosening.

[0039] Furthermore, the device also includes a connector 10, and the pin 6 and the positioning groove 301 are connected by the connector 10, which is located within the positioning groove 301. The pin 6 is connected to the positioning groove 301 via the connector 10, thus preventing the blade 4 from falling off and affecting operational efficiency when adjusting the rotation angle of the blade 4.

[0040] Furthermore, the connector 10 is an elastic element, capable of extending and retracting along the axis of the positioning groove 301. In its initial state, the connector 10 applies a pulling force to the pin 6, and the connector 10 and the pin 6 are rotatably connected about the axis of the positioning groove 301. It is understood that when the blade 4 rotates, the connector 10 will not rotate with it. After releasing the locking mechanism 5, simply pull out the pin 6, then rotate the blade 4, and release it after determining the rotation angle of the blade 4. The pulling force of the connector 10 on the pin 6 can quickly pull the pin 6 into the positioning groove 301, thus significantly reducing installation time.

[0041] Furthermore, the connector 10 is a spring structure. Compared to elastic material components, the spring structure has better elastic deformation capability, and is more wear-resistant, with a longer service life and higher reliability.

[0042] Furthermore, the pin 6 is provided with a receiving groove 601, and the end of the connector 10 away from the turntable 3 is located in the receiving groove 601. The receiving groove 601 helps to shorten the axial length of the positioning groove 301, thereby making the structure of the entire impeller more compact.

[0043] Other features, working principles, and beneficial effects of this embodiment are the same as those of Embodiment 1.

[0044] Example 3

[0045] This embodiment is a third embodiment of an air duct flow equalization and speed regulation device. This embodiment is similar to embodiment 2, except that the inlet and outlet ends of the outer casing 1 are provided with duct connectors 11, and the side of the duct connectors 11 away from the outer casing 1 is provided with a pipe slot 1101. The end of the air duct can be inserted into the pipe slot 1101, thereby forming a preliminary connection with the device, so that the air duct can be further connected to the device.

[0046] Other features, working principles, and beneficial effects of this embodiment are the same as those of Embodiment 2.

[0047] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description, and it is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An air duct flow equalization and speed regulation device, comprising a housing (1), a rotary drive assembly (2), and an impeller located at the air outlet of the housing (1) and rotatably connected to the housing (1), wherein the power output end of the rotary drive assembly (2) is connected to the impeller, characterized in that, The impeller includes a turntable (3), multiple blades (4) and multiple locking structures (5). The blades (4) are evenly distributed along the outer circumference of the turntable (3) and are detachably connected to the turntable (3) through the locking structures (5).

2. The air duct flow equalization and speed regulation device according to claim 1, characterized in that, The turntable (3) is provided with multiple positioning slots (301), and each blade (4) is connected to a pin (6) at one end near the turntable (3), and the pins (6) are inserted into the positioning slots (301) one by one.

3. The air duct flow equalization and speed regulation device according to claim 2, characterized in that, The outer circumferential surface of the pin (6) is provided with a plurality of anti-rotation protrusions (7), and the inner wall of the positioning groove (301) is provided with a plurality of anti-rotation slots (302). The anti-rotation protrusions (7) and the anti-rotation slots (302) are engaged one by one.

4. The air duct flow equalization and speed regulation device according to claim 3, characterized in that, The anti-rotation protrusion (7) extends along the axial direction of the pin (6), the anti-rotation slot (302) extends along the axial direction of the positioning slot (301), and the anti-rotation protrusion (7) can slide linearly along the positioning slot (301).

5. The air duct flow equalization and speed regulation device according to claim 2, characterized in that, The outer circumferential surface of the pin (6) is provided with a first flange ring (8), and the first flange ring (8) is provided with a plurality of threaded through holes; the outer circumferential surface of the turntable (3) is connected with a second flange ring (9), the second flange ring (9) is fitted with the first flange ring (8), and the second flange ring (9) is provided with a plurality of threaded blind holes (901) corresponding one-to-one with the threaded through holes; the locking structure (5) includes a plurality of screws, and the screws are threadedly connected to the corresponding threaded through holes and the threaded blind holes (901).

6. The air duct flow equalization and speed regulation device according to claim 5, characterized in that, It also includes a connector (10), the pin (6) and the positioning groove (301) are also connected by the connector (10), the connector (10) being located within the positioning groove (301).

7. The air duct flow equalization and speed regulation device according to claim 6, characterized in that, The connector (10) is an elastic member. The connector (10) can extend and retract along the axial direction of the positioning groove (301). In the initial state, the connector (10) applies a pulling force to the pin (6). The connector (10) is rotatably connected to the positioning groove (301) or the pin (6) with the axis of the positioning groove (301) as the rotation axis.

8. The air duct flow equalization and speed regulation device according to claim 6, characterized in that, The pin (6) is provided with a receiving groove (601), and the end of the connector (10) away from the turntable (3) is located in the receiving groove (601).

9. An air duct flow equalization and speed regulation device according to claim 6, characterized in that, The connector (10) is a spring structure.

10. An air duct flow equalization and speed regulation device according to any one of claims 1 to 9, characterized in that, The outlet end of the outer shell (1) is provided with a duct connector (11), and the duct connector (11) is provided with a pipe slot (1101) on the side away from the outer shell (1).

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