CN217735795U - Stone coal navajoite balling device - Google Patents

Abstract

The utility model provides a stone coal navajoite balling device includes ore feeding district, ore ball-milling district, powdered ore ejection of compact district, balling-up district and waste heat processing district in proper order, and wherein, the device includes in waste heat processing district: an induced draft fan; the draught fan base is positioned below the draught fan; the fan mounting foot is used for connecting the induced draft fan and the fan base; and the fan mounting foot is connected with the fan base through the sine wave damping shock absorber in a threaded shaft mode. The utility model discloses a stone coal navajoite balling device can improve the operational environment of stone coal navajoite balling processing technology, alleviates workman intensity of labour, the life of extension fixture.

Description

Stone coal navajoite balling device

Technical Field

The utility model mainly relates to a stone coal navajoite field especially relates to a stone coal navajoite balling-up device.

Background

China is an important vanadium producing big country, and the proportion accounts for more than half of the whole world. The vanadium stone coal is one of the main vanadium resources in China, the grade of vanadium pentoxide of the vanadium stone coal is generally 0.12-1.2%, and the vanadium stone coal resources are rich in Hunan, hubei, henan, shaanxi and other provinces. The traditional stone coal roasting equipment is mainly flat kiln roasting, along with the daily change of technological development and the increasing requirement of the state on environmental protection, the flat kiln roasting is classified as national elimination equipment due to poor environmental protection conditions and high labor intensity of workers, and novel kilns mature and applied in the industry at present comprise vertical kilns, tunnel kilns, rotary kilns and the like. The continuous production equipment has great help to the promotion of industrial technology, and simultaneously, the waste heat utilization can also comprehensively utilize energy sources, so that the economic value is high. The induced draft fan in the stone coal vanadium ore pelletizing roasting waste heat utilization device disclosed in the chinese patent CN206607302U is of a conventional general structure, and the blades of the fan easily accumulate dust in the daily use process of the waste heat utilization device, which affects the service life of the fan and brings inconvenience to the pelletizing processing of the stone coal vanadium ore.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a stone coal navajoite balling device can improve the operational environment of stone coal navajoite balling processing technology, alleviates workman intensity of labour, the life of extension fixture.

In order to solve the technical problem, the utility model provides a stone coal navajoite balling device includes ore feeding district, ore ball-milling district, powdered ore ejection of compact district, balling-up district and waste heat processing district in proper order, wherein, the device is in waste heat processing district includes: an induced draft fan; the draught fan base is positioned below the draught fan; the fan mounting foot is used for connecting the induced draft fan and the fan base; and the fan mounting foot is connected with the fan base through the sine wave damping shock absorber to realize threaded shaft connection.

In an embodiment of the present invention, the induced draft fan includes an impeller, and the impeller includes an impeller back plate, an impeller panel and a plurality of blades, just one side of the impeller panel has the air intake of the impeller.

The utility model discloses an in the embodiment, the draught fan includes the fan axle, a plurality of blades with the radial symmetry in center of fan axle arranges.

The utility model discloses an in the embodiment, a plurality of blades include the multiunit blade, and each group blade comprises two shapes and the same anti-drop shape blade of cavity that the half water droplet shape curved surface metal that cuts open along the drop shape major axis of size formed through the welding, and every group blade with fan axle is close to for the ascending width extreme value department in the circumferencial direction of center the outer fringe of impeller.

The utility model discloses an in an embodiment, the impeller still includes axle bed, shaft hole and rivet, wherein, the impeller passes through the shaft hole is connected to the fan shaft, rivet connection the axle bed with the impeller backplate.

In an embodiment of the present invention, the sine wave damping shock absorber includes: a spring; the first base disc and the second base disc are respectively connected with two ends of the spring; a first threaded shaft and a second threaded shaft respectively connected to the first base plate and the second base plate; and a sinusoidal wave profile barrel adapted to house the spring.

In an embodiment of the present invention, the first threaded shaft and/or the second threaded shaft are connected to the base plate through a knurled portion.

In an embodiment of the present invention, the cylinder with sine wave profile is filled with damping oil.

In an embodiment of the present invention, the first threaded shaft is connected to the fan mounting foot, and the second threaded shaft is connected to the fan base.

In an embodiment of the present invention, the waste heat processing area further includes a rotary kiln, a tail gas port, a tail gas pipe, a waste heat boiler, a gas inlet pipe, a gas outlet pipe and a chimney.

Compared with the prior art, the utility model has the advantages of it is following.

Overall, the utility model discloses a fan base and fan installation foot that the sine wave damping bumper shock absorber is connected are passed through in the waste heat processing area design of stone coal navajoite balling device to increase the impeller that has the anti-water droplet shape blade of stack cavity in the draught fan, solved among the prior art about the easy problem that accumulates the dust of stone coal navajoite balling device, greatly alleviateed workman intensity of labour, improve operational environment, prolong the life of stone coal navajoite balling device.

Specifically, the blades of the draught fan impeller are designed into a hollow inverted-water-drop shape, and the radial centers of the blade shafts are symmetrical, so that the connected fan back plate and the panel are relatively torsion-resistant and have extremely strong extrusion rigidity, the fracture of the root part of the fan blade connecting back plate caused by long-time use can be avoided, and by adopting the structure, even if the fan impeller is made of a thin plate, higher strength can be obtained, stable and reliable use is ensured, materials can be saved, the manufacture is convenient, and the lightness of equipment is facilitated; in addition, the hollow anti-water drop-shaped blade has a streamline shape, the air flow of the blade is smooth and good in skimming performance, so that the running noise of the fan is very low, the working environment is improved, the real-time cleaning of dust can be realized, the service life of equipment is prolonged, safety accidents caused by dust accumulation can be effectively avoided, and the application prospect is wide. On the other hand, the utility model provides a sine wave damping bumper shock absorber is favorable to shock attenuation, buffering, elimination vibration energy very much, and the stress concentration can effectively be alleviated very much to the sine wave urceolus, is favorable to improving draught fan life very much. Cooperation the utility model relates to an impeller and sine wave damping bumper shock absorber have realized the flow optimization of stone coal navajoite balling-up processing technology and the improvement of course of working on the whole.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the principle of the invention. In the drawings:

fig. 1 is a schematic structural diagram of a stone coal vanadium ore pelletizing device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram showing the detailed structure of the residual heat processing zone in the stone coal vanadium ore pelletizing device shown in FIG. 1;

fig. 3a, fig. 3b and fig. 3c are a schematic front view, a schematic side view and a schematic perspective view of an induced draft fan impeller in the stone coal vanadium ore balling device according to an embodiment of the present invention; and

fig. 4 is a schematic structural diagram of a sine wave damping shock absorber in the stone coal vanadium ore balling device according to an embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.

It will be understood that when an element is referred to as being "on," "connected to," "coupled to" or "contacting" another element, it can be directly on, connected or coupled to or contacting the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to" or "directly contacting" another element, there are no intervening elements present.

Referring to fig. 1, an embodiment of the present invention provides a stone coal vanadium ore balling device 10 (hereinafter, referred to as "device 10"), in which the device 10 can improve the working environment of the stone coal vanadium ore balling process, reduce the labor intensity of workers, and prolong the service life of the device. Referring to fig. 1, the stone coal vanadium ore pelletizing device 10 in the present embodiment includes an ore feeding area 11, an ore ball milling area 12, an ore powder discharging area 13, a pelletizing area 14, and a waste heat processing area 15 in this order. In this embodiment, the device 10 further includes an induced draft fan 21, a fan mounting foot 22, a fan base 23, and a sine wave damping vibration absorber 40 connecting the fan mounting foot 22 and the fan base 23 in the residual heat processing area 15.

More specifically, as shown in fig. 2, fig. 2 shows a specific structural diagram of the residual heat processing region 15 in the device 10. In the waste heat processing area 15, the fan base 23 is located below the induced draft fan 21, and the induced draft fan 21 and the fan base 23 are connected through two fan mounting feet 22. In this embodiment, the waste heat processing region 15 further includes an exhaust pipe 151, a waste heat boiler 152, an inlet pipe 153, an outlet pipe 154, and a stack 155. It should be noted that, the present invention is not limited to the example shown in fig. 2, in other embodiments of the present invention, the waste heat processing area where the draught fan 21 is located may include other necessary components, and the details of the related processing device for waste heat utilization of the stone coal vanadium ore balling in the prior art may be specifically referred to, since it is not the key point of the present invention, the expansion is not performed here.

Preferably, in the present embodiment, the induced draft fan 21 further includes an impeller 210, and reference may be made to fig. 3a and 3b for the specific structure of the impeller 210. Fig. 3a is a schematic front view of the impeller 210, and fig. 3b is a schematic side view of the impeller 210 shown in fig. 3 a. The impeller 210 comprises in particular an impeller back plate 35 and an impeller face plate 36, as shown in fig. 3b, and a plurality of blades 31, as shown in fig. 3a, of which two blades 311 and 312 are particularly marked in fig. 3a for the sake of convenience in the description with reference to fig. 3a and 3b. According to fig. 3b, on one side of the impeller panel 36 there is an air inlet 37 for the impeller 210.

In this embodiment, the induced draft fan 21 comprises a fan shaft (not shown) which, when installed, is positionally fitted into the shaft hole 32 in the center of the shaft seat 33 of the impeller 210 as shown in fig. 3a and 3b, i.e. the impeller 210 is connected to the fan shaft via the shaft hole 32 in the center of the shaft seat 33. Referring again to fig. 3a, in the present embodiment, the plurality of blades 31 are uniformly arranged in radial symmetry about the center of the fan shaft (i.e., the center of the shaft hole 32). In addition, the impeller 210 includes a plurality of rivets 34 in addition to the shaft hole 32. More clearly according to fig. 3b, a plurality of rivets 34 connect the shaft seat 33 and the impeller back plate 35. It can be understood that, according to fig. 3a and 3b, the impeller back plate 35 and the impeller face plate 36 are both circular, wherein a hollow portion at one side of the impeller back plate 35 is used for providing a position of the shaft seat 33, and is fixedly connected with the shaft seat 33 through the rivet 34; the hollow part at one side of the impeller panel 36 is an air inlet 37 of the impeller 210; one side of the impeller panel 36 is connected with one end of the hollow inverse drop-shaped blade 31, and the other end of the hollow inverse drop-shaped blade 31 is connected with one side of the impeller back plate 35.

The utility model discloses a different in real time, as shown in fig. 3a plurality of blades 31 still include the multiunit blade, more specifically as shown in fig. 3c, each group's blade 31 is by two shapes and the same anti-water droplet shape blade of cavity that the semiwater droplet shape curved surface metal that cuts open along the water droplet shape major axis of size formed through the welding, has the streamline appearance of mutual symmetry and every group's blade 31 is close to the outer fringe of impeller in the width extreme value department on the circumferencial direction that uses the fan axle as the center. This means that each set of blades, after assembly, eventually assumes the inverted drop shape shown in figure 3a, i.e. the wider part of the drop shape is closer to the outer edge of the impeller 210 and the narrower part of the drop shape is closer to the centre of the impeller 210.

When the impeller 210 of the induced draft fan 21 is used, the plurality of blades 31 are designed into a hollow inverted-droplet shape, and the plurality of blades 31 are axially and radially centrosymmetrically arranged in the impeller 210. When the impeller 210 rotates at a high speed, the surface of the blade 31 has a centrifugal self-cleaning effect under the action of centrifugal force, so that dust cannot adhere to the surface under the action of centrifugal force, and thus the dynamic and static balance of the impeller 210 cannot be influenced and the dust cannot be accumulated. The technical solution of the stacked hollow inverted-drop-shaped structure in this embodiment is particularly suitable for a case where the distance between the front and rear end plates of the impeller (for example, the impeller back plate 35 and the impeller face plate 36 shown in fig. 3b in this embodiment) is large, that is, it is particularly suitable for a wide-impeller large fan with a particularly large impeller thickness and a particularly large required flow rate.

The foregoing describes a specific implementation of the impeller 210 in the present embodiment, and the following describes specific details of the fan mounting foot 22 in the present embodiment. It should be noted that, although only two fan mounting feet 22 are exemplarily shown in the embodiment shown in fig. 2, in other embodiments of the present invention, the number of the fan mounting feet may be adjusted according to actual needs, for example, one or more fan mounting feet, and the present invention is not limited to the number of the fan mounting feet.

In this embodiment, the fan mounting foot 22 is threadably connected to the fan base 23 by a sine wave damper shock absorber 40 as shown in FIG. 4. Specifically, according to fig. 4, the sine wave damping vibration absorber 40 (hereinafter or simply "vibration absorber 40") specifically includes a spring 41, a first base plate 421 and a second base plate 422, which are respectively connected to both ends of the spring 41. Shock absorber 40 further includes a first threaded shaft 431 and a second threaded shaft 432 that connect first base plate 421 and second base plate 422, respectively. On this basis, the damper 40 has a sinusoidal profile cylinder 44 adapted to house the spring 41.

In the present embodiment, it is preferable that the first and second threaded shafts 431 and 432 are each connected to the first and second base plates 421 and 422, respectively, through the knurled portion 45. In this embodiment, the sinusoidal wave profile cylinder 44 is filled with damping oil. In actual assembly, referring to fig. 2, the first threaded shaft 431 is connected with the blower mounting foot 22, and the second threaded shaft 432 is connected with the blower base 23, so that the blower mounting foot 22 and the blower base 23 are connected through the sine wave damping shock absorber 40.

On the whole, in order to make draught fan 21 can reliable work, the utility model discloses in designed like the sinusoidal wave damping bumper shock absorber 40 shown in fig. 2 and fig. 4 to guarantee the normal operating of draught fan and prevent damage. The sine wave damping shock absorber 40 is provided with a spring 41 in the middle, two ends of the spring are connected with two threaded shafts 431 and 432 and two base discs 421 and 422, the two threaded shafts 431 and 432 are respectively connected with the respective base discs 421 and 422 through a knurling part 45 and are then integrally cast with the sine wave profile cylinder 44 of the rubber base material. The sine wave profile cylinder 44 and the two end parts form a closed whole, wherein the damping oil with certain pressure is filled in the cylinder, the first threaded shaft 431 is connected with the fan mounting foot 22, and the second threaded shaft 432 is fixedly connected on the fan base 23. When vibration and impact occur, the spring and the rubber base material can effectively buffer and reduce destructive influence, and meanwhile, the damping oil can quickly consume energy to completely eliminate the vibration and the impact.

In the present embodiment, a preamble module of the stone coal vanadium ore pelletizing device 10 before the waste heat processing area 15 is also described with reference to fig. 1, and the ore feeding area 11 may specifically include an ore belt conveyor, an ore bunker, a vibration feeder, an ore conveying pipe, and the like; the ore milling zone 12 may include an ore ball mill and an ore ball mill discharge pipe; the mineral powder discharging area 13 can specifically comprise a mineral powder hoister, a mineral powder hoister discharging pipe, a mineral powder bin, a mineral powder vibrating feeder and other parts; and the balling zone 14 specifically comprises a double-shaft mixer, a balling machine, a ball belt conveyor, a ball hopper, an air lock valve and a ball conveying pipe. It is understood that the construction diagram shown in fig. 1 only shows an exemplary solution of the stone coal vanadium ore pelletizing device 10 in a specific implementation, and other details can refer to the implementation manner of the prior art, since the ore feeding area 11 to the pelletizing area 14 are not the focus of the present invention, and are not expanded herein.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, though not expressly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Similarly, it should be noted that in the preceding description of embodiments of the present application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit-preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

Although the present application has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the foregoing embodiments are merely illustrative of the present application and that various changes and substitutions of equivalents may be made without departing from the spirit of the application, and therefore, it is intended that all changes and modifications to the above-described embodiments that come within the spirit of the application fall within the scope of the claims of the application.

Claims (10)

1. The utility model provides a stone coal navajoite balling device which characterized in that includes ore feeding area, ore ball-milling district, powdered ore ejection of compact district, balling-up district and waste heat processing district in proper order, wherein, the device is in the waste heat processing district includes:

an induced draft fan;

the draught fan base is positioned below the draught fan;

the fan mounting foot is used for connecting the induced draft fan and the fan base; and

and the fan mounting foot is connected with the fan base through the sine wave damping shock absorber in a threaded shaft mode.

2. The apparatus of claim 1, wherein the induced draft fan comprises an impeller, and the impeller comprises an impeller back plate, an impeller face plate and a plurality of blades, and one side of the impeller face plate has an air inlet of the impeller.

3. The apparatus of claim 2, wherein the induced draft fan comprises a fan shaft, and the plurality of blades are arranged radially symmetrically about a center of the fan shaft.

4. The apparatus of claim 3 wherein said plurality of blades comprises a plurality of sets of blades, each set of blades comprising two semi-water drop curved metal sheets of the same shape and size cut along the long axis of the water drop and welded to form a hollow inverted water drop shaped blade, and each set of blades being positioned near the outer edge of said impeller at the extreme width in the circumferential direction about said fan axis.

5. The device of claim 3, wherein the impeller further comprises an axle seat, an axle hole through which the impeller is connected to the fan shaft, and a rivet connecting the axle seat and the impeller back plate.

6. The apparatus of claim 1, wherein the sine wave damped shock absorber comprises:

a spring;

the first base disc and the second base disc are respectively connected with two ends of the spring;

a first threaded shaft and a second threaded shaft respectively connected to the first base plate and the second base plate; and a sinusoidal wave profile cylinder adapted to house the spring.

7. The apparatus of claim 6, wherein the first threaded shaft and/or the second threaded shaft is coupled to the base plate by knurling.

8. The apparatus of claim 6, wherein the sine wave contoured cylinder is filled with damping oil.

9. The apparatus of claim 6, wherein the first threaded shaft is coupled to the blower mounting foot and the second threaded shaft is coupled to the blower base.

10. The apparatus of any one of claims 1 to 9, wherein the waste heat processing zone further comprises a rotary kiln, a tail gas port, a tail gas pipe, a waste heat boiler, a gas inlet pipe, a gas outlet pipe and a chimney.

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