CN220696191U - Head cover structure, filter cartridge and air purifying equipment - Google Patents

Abstract

The application relates to a head cover structure, a filter cartridge and air purifying equipment, which comprises a base plate; the head cover comprises an annular main body, one end of the head cover is arranged on one side of the base plate, and a first limiting structure is arranged on the outer annular wall of the annular main body; and the inner ring wall of the sealing ring is provided with a second limiting structure, the sealing ring is sleeved outside the annular main body, and the second limiting structure is in limiting fit with the first limiting structure so as to limit the axial movement freedom degree of the sealing ring and the annular main body. The sealing ring and the annular main body are firmly and reliably installed, the problem that the sealing ring loosens or even falls off due to air flow impact when the air pressure for self-cleaning is large by adopting pulse blowing to filter the filter cylinder is prevented, and the overall structural stability and the working reliability of the head cover structure are improved.

Description

Head cover structure, filter cartridge and air purifying equipment

Technical Field

The application relates to the technical field of filter appliances, in particular to a head cover structure, a filter cartridge and air purifying equipment.

Background

At present, when products are produced and manufactured in industries such as agriculture, chemical industry, construction and the like, a plurality of links generate harmful substances such as dust, smoke and the like, if the harmful substances are inhaled by staff, the harmful substances can cause harm to health, and if the harmful substances are diffused into the environment, the air quality and peripheral vegetation can be polluted, so that the regulation requires that production enterprises are provided with air purifying equipment, and the waste gas containing the harmful substances is discharged after being purified.

Filter elements in air cleaning devices come in a variety of forms, with cartridges being one of the more common and widespread types of filter elements. The filter cartridge generally comprises a cartridge body, a head cover and a sealing ring, wherein the head cover is arranged at the end part of the cartridge body, the sealing ring is sleeved outside the head cover, and the head cover is clamped by means of self elastic force to realize installation and fixation, but when the filter cartridge is subjected to self-cleaning (ash cleaning) by pulse blowing after working for a period of time, the problem that the sealing ring loosens and even falls off on the head cover due to overlarge air flow impact is easily caused, and the stability and the working reliability of the integral structure of the filter cartridge are affected.

Disclosure of Invention

Accordingly, it is necessary to provide a head cover structure, a filter cartridge, and an air cleaning device, which are capable of solving the problem that the mounting is not firm and the loosening and dropping easily occur.

In one aspect, the present application provides a head cover structure, comprising:

a substrate;

the head cover comprises an annular main body, one end of the head cover is arranged on one side of the base plate, and a first limiting structure is arranged on the outer annular wall of the annular main body; the method comprises the steps of,

the inner ring wall of the sealing ring is provided with a second limiting structure, the sealing ring is sleeved outside the annular main body, and the second limiting structure is in limiting fit with the first limiting structure so as to limit the axial movement freedom degree of the sealing ring and the annular main body.

In the head cover structure of the scheme, the annular main body is arranged on the base plate, the base plate is fixedly arranged on the head cover, the sealing ring is sleeved outside the annular main body, at the moment, the sealing ring can be tightly sleeved on the annular main body by means of self elastic force, and the inner ring wall of the sealing ring is provided with a second limiting structure which can be in limiting fit with the first limiting structure arranged on the outer annular wall of the annular main body, so that the effect of limiting the sealing ring to axially move relative to the annular main body is achieved, the sealing ring and the annular main body are firmly and reliably arranged, the problem that the sealing ring is loose or even falls off due to air flow impact when the air pressure for self-cleaning is large by adopting pulse blowing to filter cylinders is prevented, and the overall structural stability and the working reliability of the head cover structure are improved.

The technical scheme of the application is further described below:

in one embodiment, one of the first limiting structure and the second limiting structure is provided with a limiting protrusion, the other one of the first limiting structure and the second limiting structure is provided with a limiting recess, and the limiting protrusion is in snap connection with the limiting recess.

In one embodiment, the number of the first limiting structures is at least two, the at least two first limiting structures are arranged along the axial direction of the annular main body at intervals, the number of the second limiting structures is at least two, the at least two second limiting structures are arranged along the axial direction of the sealing ring at intervals, and the second limiting structures are in one-to-one corresponding buckling connection with the first limiting structures.

In one embodiment, the annular body includes a connecting end connected to the base plate and a free end disposed away from the base plate, the diameter of the annular body presenting a transition from the connecting end to the free end.

In one embodiment, the diameter of the base plate is larger than that of the annular main body, the base plate and the annular main body are coaxially arranged, the base plate is provided with a positioning convex edge exceeding the outer annular wall of the annular main body, and the positioning convex edge is in abutting positioning with the end face of the sealing ring.

In one embodiment, the outer ring wall of the sealing ring is provided with a mounting groove extending along the circumferential direction, and the mounting groove is used for being clamped with the sealing ring sliding plate.

In one embodiment, the head cover further comprises a central sleeve, one end of the central sleeve is arranged on the base plate and located inside the annular main body, and an outer pipe wall of the central sleeve is matched with an inner annular wall of the annular main body to form an inserting annular cavity.

In one embodiment, the central sleeve comprises a first pipe end connected with the base plate and a second pipe end arranged far away from the base plate, and the pipe diameter of the central sleeve is in a decreasing transition from the first pipe end to the second pipe end.

In another aspect, the present application also provides a filter cartridge comprising a head cover structure as described above.

In addition, the application also provides an air purification device, which comprises the filter cartridge.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a diagram illustrating an assembly structure of a head cover and a base plate according to an embodiment of the present application.

Fig. 2 is a side view structural diagram of fig. 1.

Fig. 3 is a schematic structural view of the head cover structure in the present application.

Fig. 4 is a cross-sectional view of the structure at A-A in fig. 3.

Reference numerals illustrate:

10. a substrate; 11. positioning the convex edge; 20. a head cover; 21. an annular body; 211. a first limit structure; 22. a central sleeve; 221. a first tube end; 222. a second tube end; 30. a seal ring; 31. a second limit structure; 32. a mounting groove; 40. an annular cavity.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1 to 4, a head cover structure according to an embodiment of the present application includes a base plate 10, a head cover 20, and a sealing ring 30. Alternatively, the base plate 10 and the head cover 20 may be integrally formed or detachably assembled, and may be specifically selected according to practical needs.

In order to reduce the manufacturing cost and improve the durability, at least one of the base plate 10 and the head cover 20 is preferably made of plastic material; and when both the base plate 10 and the head cover 20 are made of plastic materials, the base plate and the head cover can be manufactured in an integral injection molding mode, so that better overall structural performance is ensured.

In this embodiment, the head cover 20 includes an annular main body 21, one end of the head cover 20 is disposed on one side of the base plate 10, and an outer annular wall of the annular main body 21 is provided with a first limiting structure 211; the inner ring wall of the sealing ring 30 is provided with a second limiting structure 31, the sealing ring 30 is sleeved outside the annular main body 21, and the second limiting structure 31 is in limiting fit with the first limiting structure 211 so as to limit the axial movement freedom degree of the sealing ring 30 and the annular main body 21.

In summary, implementing the technical scheme of the embodiment has the following beneficial effects: in the head cover structure of the above scheme, the annular main body 21 is mounted on the base plate 10, the base plate 10 is used for loading and fixing the head cover 20, the sealing ring 30 is sleeved outside the annular main body 21, at this time, except that the sealing ring 30 can be sleeved on the annular main body 21 by means of self elastic force, the inner ring wall of the sealing ring 30 is provided with the second limiting structure 31, and the second limiting structure 31 can be in limiting fit with the first limiting structure 211 arranged on the outer annular wall of the annular main body 21, so that the effect of limiting the sealing ring 30 to axially move relative to the annular main body 21 is achieved, the sealing ring 30 and the annular main body 21 are firmly and reliably mounted, the problem that the sealing ring 30 is loose or even falls off due to air flow impact when the air pressure for self cleaning is large by adopting pulse blowing to filter cartridges is prevented, and the overall structural stability and working reliability of the head cover structure are improved.

Specifically, in some embodiments, one of the first limiting structure 211 and the second limiting structure 31 is provided with a limiting protrusion, and the other one of the first limiting structure 211 and the second limiting structure 31 is provided with a limiting recess, and the limiting protrusion is in snap connection with the limiting recess.

During installation, the sealing ring 30 can be directly sleeved into the outside of the annular main body 21 from the free end of the annular main body 21 away from the substrate 10, in the process, the limiting protrusions can gradually contact with the limiting concave parts until being clamped with each other, and because the outer walls of the two sides of the width direction of the limiting protrusions are respectively in one-to-one corresponding butt with the groove walls of the two sides of the width direction of the limiting concave parts, the formed clamping structure can well limit the moving freedom degree of the sealing ring 30 along the axial direction of the annular main body 21, so that the installation strength of the sealing ring 30 is improved, and the problems that the sealing ring 30 loosens or even falls off under the impact of air flow are solved.

Further, based on the above embodiment, the first limiting structures 211 are at least two, the at least two first limiting structures 211 are arranged along the axial direction of the annular main body 21 at intervals, the second limiting structures 31 are at least two, the at least two second limiting structures 31 are arranged along the axial direction of the sealing ring 30 at intervals, and the second limiting structures 31 are in one-to-one corresponding snap connection with the first limiting structures 211. In this way, the two groups of the first limiting structures 211 and the second limiting structures 31 can form two buckling structures in the axial direction of the annular main body 21, so that the limiting effect on the sealing ring 30 is enhanced, and the sealing ring 30 is ensured to be installed on the annular main body 21 more stably.

In some embodiments, the annular body 21 includes a connecting end connected to the base plate 10, and a free end disposed away from the base plate 10, the diameter of the annular body 21 presenting a transition from the connecting end to the free end.

Under this structural design, annular main body 21 can form flaring form structure, and after sealing washer 30 suit was on annular main body 21, the big footpath end (i.e. free end) had the effect of limiting the outside slippage of sealing washer 30 through the free end, and reducing structure can make sealing washer 30 take place the elastic expansion of a relatively large margin to make sealing washer 30 can produce bigger self elastic force and tighten in annular main body 21 outside.

Further, the diameter of the base plate 10 is larger than that of the annular main body 21, the base plate 10 and the annular main body 21 are coaxially arranged, the base plate 10 is provided with a positioning convex edge 11 exceeding the outer annular wall of the annular main body 21, and the positioning convex edge 11 is in abutting positioning with the end face of the sealing ring 30.

That is, when the sealing ring 30 is sleeved outside the annular main body 21 along the axial direction, the end face of the sealing ring 30 can be subjected to the positioning action of the positioning convex edge 11 when being abutted against the positioning convex edge 11, so that the mounting and positioning of the sealing ring 30 are ensured, and the sealing ring 30 and the annular main body 21 can obtain higher assembly precision.

In addition, in still other embodiments, the outer ring wall of the seal ring 30 is provided with a mounting groove 32 extending along the circumferential direction, and the mounting groove 32 is used for being in sliding plate joint with the seal ring 30.

On the basis of any of the above embodiments, the head cover 20 further includes a central sleeve 22, one end of the central sleeve 22 is disposed on the base plate 10 and is located inside the annular body 21, and an outer tube wall of the central sleeve 22 cooperates with an inner annular wall of the annular body 21 to form the plugging annular cavity 40. Preferably, the central sleeve 22 is arranged coaxially with the annular body 21. So that the structure of the head cover 20 is more regular, the manufacturing difficulty is reduced, and the installation is convenient.

When the head cover 20 is assembled with the cylinder body, one end of the cylinder body is axially sleeved with the central sleeve 22, and the plugging annular cavity 40 provides a mounting space for sleeving the end of the cylinder body with the head cover 20, so that the plugging and assembling reliability of the central sleeve and the cylinder body can be ensured under the action of friction force by means of the mutual close fit of the outer tube wall of the central sleeve 22 and the inner tube wall of the cylinder body.

Further, the central sleeve 22 comprises a first pipe end 221 connected to the base plate 10 and a second pipe end 222 arranged away from the base plate 10, the pipe diameter of the central sleeve 22 being in a decreasing transition from the first pipe end 221 towards the second pipe end 222. That is, when the pulse blowing is adopted to self-clean the deposited ash on the cylinder body, the vacuum negative pressure effect can be formed at the second pipe end 222 with smaller pipe diameter of the central sleeve 22, the flow of gas is enhanced instantaneously, the filter cylinder forms instantaneous expansion and contraction, the effect of enhancing the pulse self-cleaning ash removal is achieved, and the working resistance of the filter cylinder is reduced.

In addition, the present application provides an air cleaning device comprising a filter cartridge comprising a head cover structure as described in any of the embodiments above.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (8)

1. A head cover structure, comprising:

a substrate;

the head cover comprises an annular main body, one end of the head cover is arranged on one side of the base plate, and a first limiting structure is arranged on the outer annular wall of the annular main body; the method comprises the steps of,

the inner ring wall of the sealing ring is provided with a second limiting structure, the sealing ring is sleeved outside the annular main body, and the second limiting structure is in limiting fit with the first limiting structure so as to limit the axial movement freedom degree of the sealing ring and the annular main body;

the diameter of the base plate is larger than that of the annular main body, the base plate and the annular main body are coaxially arranged, the base plate is provided with a positioning convex edge exceeding the outer annular wall of the annular main body, and the positioning convex edge is in abutting connection with the end face of the sealing ring;

the head cover further comprises a center sleeve, the center sleeve comprises a first pipe end connected with the base plate and a second pipe end far away from the base plate, the pipe diameter of the center sleeve is in descending transition from the first pipe end to the direction of the second pipe end, and the second pipe end extends out of the end face, far away from the base plate, of the annular main body.

2. A cover structure according to claim 1, wherein one of the first and second stop structures is provided with a stop protrusion, and the other of the first and second stop structures is provided with a stop recess, and the stop protrusion is in snap connection with the stop recess.

3. The head cover structure according to claim 2, wherein the number of the first limiting structures is at least two, the at least two first limiting structures are arranged at intervals along the axial direction of the annular main body, the number of the second limiting structures is at least two, the at least two second limiting structures are arranged at intervals along the axial direction of the sealing ring, and the second limiting structures are in one-to-one corresponding buckling connection with the first limiting structures.

4. A closure as claimed in claim 1, wherein the annular body includes a connecting end connected to the base plate and a free end disposed away from the base plate, the diameter of the annular body presenting a transition from the connecting end to the free end.

5. A closure structure according to claim 1, wherein the outer ring wall of the sealing ring is provided with a mounting groove extending in a circumferential direction, the mounting groove being adapted to be snapped into engagement with the sealing ring slide.

6. A closure as claimed in claim 1, wherein one end of the central sleeve is disposed on the base plate and within the annular body, and wherein the outer wall of the central sleeve cooperates with the inner annular wall of the annular body to form a plug annular cavity.

7. A filter cartridge comprising a head cover structure as claimed in any one of claims 1 to 6.

8. An air cleaning device comprising the filter cartridge of claim 7.