Dust collector and its anti-dust accumulation impeller

Abstract

The utility model belongs to the technical field of air lock fan equipment, specifically relates to a kind of air lock fan and its anti-accumulation powder impeller, and the air lock fan includes: casing;Impeller, rotatable being arranged in the casing;The impeller includes main shaft and the multiple blades being arranged along the main shaft periphery;The root of the blade is connected with the main shaft and is provided with communicating hole, and the communicating hole extends along the axial direction of the main shaft.The air lock fan of the utility model is provided with communicating hole in the blade root of impeller, so that the recess between adjacent blades is communicated, effectively breaks the material stagnation area in recess, thereby preventing powder accumulation and hardening in recess, achieving continuous self-cleaning of air lock fan impeller, and improving the reliability and continuity of equipment operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of airlock equipment, and particularly relates to an airlock and its anti-powder-accumulation impeller. Background Technology

[0002] The airlock is a key device in powder conveying systems for achieving quantitative unloading and airlocking. Its core working component is a multi-bladed impeller rotating inside the casing, which conveys materials through multiple sealed chambers formed between the blades and the casing.

[0003] Currently, when commonly used rotary valves are used to convey fine powders such as flour and chemical powders, the fine powder easily gets trapped and accumulates in the "U" or "V" shaped grooves formed by adjacent blades and the main shaft on the impeller, gradually compacting and forming scale. This not only reduces the effective volume of the equipment but may also affect the dynamic balance, leading to vibration and wear.

[0004] Therefore, how to solve the problem of scale buildup in the grooved area of ​​the impeller when the airlock conveys fine powder is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one airlock fan and its anti-powder-accumulation impeller.

[0007] In a first aspect, embodiments of this disclosure provide a shut-off fan, including: case; The impeller is rotatably mounted inside the housing; The impeller includes a main shaft and a plurality of blades arranged circumferentially along the main shaft; A connecting hole is provided at the connection between the root of the blade and the main shaft, and the connecting hole extends along the axial direction of the main shaft.

[0008] In one optional embodiment, the connecting hole is a strip-shaped hole, and its length direction is parallel to the axial direction of the main shaft.

[0009] In one alternative embodiment, the connecting hole is disposed through the blade in the thickness direction.

[0010] In one alternative embodiment, the connecting holes on the plurality of blades are evenly distributed circumferentially along the main shaft.

[0011] In one alternative embodiment, the edges of the connecting hole are provided with chamfers or rounded corners.

[0012] Secondly, this disclosure also provides an anti-powder-accumulation impeller for a rotary valve, comprising: spindle; Several blades are arranged circumferentially along the main axis; The blade has a connecting hole at the connection between its root and the main shaft, and the connecting hole extends along the axial direction of the main shaft.

[0013] In one optional embodiment, the connecting hole is a strip-shaped hole, and its length direction is parallel to the axial direction of the main shaft.

[0014] In one alternative embodiment, the connecting hole is disposed through the blade in the thickness direction.

[0015] In one alternative embodiment, the connecting holes on the plurality of blades are evenly distributed circumferentially along the main shaft.

[0016] In one alternative embodiment, the edges of the connecting hole are provided with chamfers or rounded corners.

[0017] The beneficial effects of this utility model are that by opening axial connecting holes at the root of the impeller blades, the grooves between adjacent blades can achieve airflow communication, effectively breaking the material stagnation zone in the grooves, thereby preventing powder from accumulating and caking in the grooves, realizing continuous self-cleaning of the impeller, and improving the reliability and continuity of equipment operation.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A side view of a shut-off fan provided in an embodiment of this disclosure; Figure 2 This is a perspective view of a fan shut-off device provided in an embodiment of this disclosure.

[0022] In the picture: 100. Shell; 200, Impeller; 210, Main shaft; 220, Blades; 221, Connecting hole; 300. Groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed a drawback of existing technology: Currently, when commonly used rotary valves convey fine powders such as flour and chemical powders, the fine powder easily accumulates and traps within the "U"-shaped groove formed by adjacent blades and the hub on the impeller, gradually compacting and forming scale. This not only reduces the effective volume of the equipment but may also affect dynamic balance, leading to vibration and wear.

[0030] Based on the above research, this disclosure provides a shut-off fan that, by opening an axially extending connecting hole at the connection between the root of each blade and the main shaft, allows the grooves between adjacent blades to be connected, thereby actively breaking up the stagnant air mass in the area and effectively preventing powder retention and accumulation.

[0031] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] See Figure 2 This disclosure provides a shut-off fan, mainly comprising an impeller 200 and a housing 100. The housing 100 forms the basic frame of the shut-off fan, accommodating and supporting internal components, and includes an inlet and an outlet. The impeller 200 is rotatably disposed within the inner cavity of the housing 100. Specifically, the impeller 200 includes a main shaft 210 and multiple blades 220. The two ends of the main shaft 210 are rotatably supported on the side walls of the housing 100 via bearings. The multiple blades 220 are uniformly welded or integrally formed along the circumference of the main shaft 210. A connecting hole 221 is provided at the connection between the root of each blade 220 and the main shaft 210. The connecting hole 221 extends axially along the main shaft 210.

[0035] See Figure 1 When the impeller 200 rotates, a "U" or "V" shaped groove 300 is formed between two adjacent blades 220 and the main shaft 210. In conventional airlocks, this area is where powder easily gets trapped and clumps. This invention addresses this by creating axial connecting holes 221 at the root of the blades 220, allowing airflow to connect these previously relatively independent grooves 300 in the root region. During operation, these connecting holes 221 effectively break up the static air layer or vortex within the grooves 300, creating minute airflow disturbances that make it difficult for fine powder to adhere stably within the grooves 300. Continuous micro-airflow exchange prevents trapped material from absorbing moisture and compacting due to prolonged static placement, fundamentally avoiding the formation of a hard scale layer. Because scale does not easily accumulate in the grooves 300, the effective volume and dynamic balance of the impeller 200 are maintained, thereby reducing vibration and wear caused by scale buildup.

[0036] See also Figure 2 In some embodiments, the connecting hole 221 is preferably a strip-shaped hole. This strip-shaped hole extends along its length and is parallel to the axial direction of the main shaft 210. Optionally, the cross-sectional shape of the strip-shaped hole perpendicular to its length direction can be rectangular, rounded rectangular, or elliptical. Its edges are preferably chamfered or rounded to improve airflow and prevent stress concentration. This specific shape and orientation allows the strip-shaped hole to form a stable guiding airflow along the axial direction of the groove 300 when the impeller 200 rotates, effectively disrupting the material retention area within the groove 300, thereby achieving the effect of preventing powder accumulation.

[0037] See also Figure 2In some embodiments, the connecting holes 221 on each blade 220 of the impeller 200 are positioned in the same and regular manner. Specifically, the connecting holes 221 on multiple blades 220 are evenly distributed circumferentially along the main shaft 210. Viewed from a direction perpendicular to the axis of the main shaft 210, all connecting holes 221 are arranged with a uniform angular spacing around the center of the main shaft 210. This uniform distribution ensures that when the impeller 200 rotates, the airflow disturbance introduced by the connecting holes 221 on the grooves 300 between each blade 220 is equal. Through the above arrangement, not only can a comprehensive and consistent anti-powder accumulation effect be achieved, but more importantly, it avoids the additional dynamic imbalance that may be caused by uneven cleaning force, thereby ensuring the stability and reliability of equipment operation.

[0038] See also Figure 2 In some embodiments, the connecting hole 221 is provided through the blade 220 in the thickness direction. This connecting hole 221 is a through-hole that completely penetrates the blade 220 body, allowing direct communication between the spaces on both sides of the blade 220. When the impeller 200 rotates, the airflow can pass through this through-hole without obstruction, forming an effective micro-circulation between the adjacent blades 220 and the groove 300 formed by the main shaft 210. This directly and thoroughly disrupts the material retention conditions within the groove 300, preventing powder accumulation.

[0039] See Figure 1 and Figure 2 Some embodiments also provide an anti-powder-accumulation impeller 200 for a rotary valve that can be manufactured, supplied, and used independently. For example... Figure 2 As shown, the impeller 200 includes a main shaft 210 and a plurality of blades 220 arranged circumferentially thereon. A connecting hole 221 is provided at the connection point between the root of each blade 220 and the main shaft 210, and the connecting hole 221 extends axially along the main shaft 210. This impeller 200 can be replaced or upgraded as a core component of the shut-off fan.

[0040] See Figure 2 In some embodiments, the connecting hole 221 may be specifically implemented as a strip-shaped hole, with its length direction parallel to the axial direction of the main shaft 210. This design can form a stable axial airflow when the impeller 200 rotates, efficiently cleaning the grooves 300 between the blades 220.

[0041] See also Figure 2 In some embodiments, the connecting hole 221 is disposed through the thickness direction of the blade 220. This "through" structure is a necessary condition to ensure effective airflow communication between adjacent grooves 300.

[0042] See also Figure 2In some embodiments, the connecting holes 221 on each blade 220 can be evenly distributed along the circumference of the main shaft 210. This uniform layout ensures the stability of the dynamic balance of the impeller 200 during rotation and avoids additional vibrations introduced by the asymmetry of the unblocking structure.

[0043] See also Figure 2 In some embodiments, the edges of the connecting hole 221 may be chamfered or rounded. The smooth edges of the chamfered or rounded corners can prevent powder from sticking to the edge of the hole and avoid creating new powder accumulation points.

[0044] In summary, this rotary valve, by opening an axial connecting hole 221 at the root of the blade 220 of the impeller 200, enables airflow communication between the grooves 300 of adjacent blades 220, effectively breaking the material stagnation zone within the grooves 300. This prevents powder from accumulating and caking within the grooves 300, achieving continuous self-cleaning of the rotary valve impeller 200 and improving the reliability and continuity of equipment operation.

[0045] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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.

[0046] 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 orientation or positional relationships, are based on the orientation or positional relationships 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, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0047] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature and another element or feature illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0048] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A type of airlock, characterized in that, include: Casing (100); An impeller (200) is rotatably disposed within the housing (100); The impeller (200) includes a main shaft (210) and a plurality of blades (220) arranged circumferentially along the main shaft (210). A connecting hole (221) is provided at the connection between the root of the blade (220) and the main shaft (210), and the connecting hole (221) extends along the axial direction of the main shaft (210).

2. The airlock as described in claim 1, characterized in that, The connecting hole (221) is a strip-shaped hole, and its length direction is parallel to the axial direction of the main shaft (210).

3. The airlock as described in claim 1, characterized in that, The connecting hole (221) is provided through the thickness direction of the blade (220).

4. The airlock as described in claim 1, characterized in that, The connecting holes (221) on the plurality of blades (220) are evenly distributed circumferentially along the main shaft (210).

5. The airlock as described in claim 1, characterized in that, The edges of the connecting hole (221) are provided with chamfers or rounded corners.

6. An anti-powder-accumulation impeller for a rotary valve, characterized in that, include: Spindle (210); Several blades (220) are arranged circumferentially along the main axis (210); Wherein, a connecting hole (221) is provided at the connection between the root of the blade (220) and the main shaft (210), and the connecting hole (221) extends along the axial direction of the main shaft (210).

7. The anti-powder-accumulation impeller for a rotary valve as described in claim 6, characterized in that, The connecting hole (221) is a strip-shaped hole, and its length direction is parallel to the axial direction of the main shaft (210).

8. The anti-powder-accumulation impeller for a rotary valve as described in claim 6, characterized in that, The connecting hole (221) is provided through the thickness direction of the blade (220).

9. The anti-powder-accumulation impeller for a rotary valve as described in claim 6, characterized in that, The connecting holes (221) on the plurality of blades (220) are evenly distributed circumferentially along the main shaft (210).

10. The anti-powder-accumulation impeller for a rotary valve as described in claim 6, characterized in that, The edges of the connecting hole (221) are provided with chamfers or rounded corners.

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