CN211215814U - A wheel hub, gaseous purification dish and gaseous purifier for gaseous purification dish - Google Patents

Abstract

A hub for a gas cleaning disc, a gas cleaning disc and a gas cleaning device, wherein the hub for the gas cleaning disc comprises a first disc and a second disc, the first disc is provided with holes connected to a rotary driving device, and the rotation axis of the first disc is coincident with the rotation axis of the second disc; the first disk and the second disk are detachably connected together; wherein the first disc is provided with an annular stop surface, the rotational axis of which coincides with the rotational axis of the first disc. The utility model discloses wheel hub installation spoke is stable, reliable, convenient, low in manufacturing cost.

Description

A wheel hub, gaseous purification dish and gaseous purifier for gaseous purification dish

Technical Field

The utility model relates to a wheel hub for gaseous purification dish, wheel hub for eliminating liquid drop or solid particle's in the gas purification dish very much.

Background

With the increasing development of economy, people have higher and higher requirements on the air quality of the environment. On one hand, the air quality requirement of the residential environment is improved, and the oil smoke in the kitchen can have great influence on the whole household environment; on the other hand, the air quality in the natural environment is also required to be improved, and the PM2.5 in the atmosphere is increased, which has attracted social attention.

On one hand, kitchen oil smoke harms the respiratory tract health of family members, on the other hand, after being discharged to the atmosphere, aerosol can be generated, and the PM2.5 index is improved; the air quality is seriously affected by a large amount of emission.

The existing kitchen flue gas treatment device is very various, for example, the traditional electrostatic adsorption device has, but the traditional electrostatic adsorption device has serious defects, poor effect and low efficiency. Some range hoods directly suck air in a kitchen through negative pressure and filter oil smoke through a filter screen, and the oil smoke cannot be completely removed in the mode.

A mechanical soot removing device has appeared in recent years. The mechanical oil smoke removing device is provided with an exhaust fan at the upper part for upwards extracting smoke, a gas purification disc is arranged below the exhaust fan, a plurality of spokes are arranged on the gas purification disc, the gas purification disc is in a rotating state during purification, and when air with oil smoke is extracted by the negative pressure of the exhaust fan, the air with oil smoke passes through the gas purification disc; the spoke on the gas purification dish rotates at a high speed, collides oil smoke liquid drop or other particles in the air, and oil smoke liquid drop or other particles can adhere on the spoke, changes the direction of motion under the effect of spoke, is tangential motion along the spoke, and then final motion is hit to the purification dish periphery and is hit on the clarifier inner wall and final landing is collected.

The existing mechanical oil fume removing device has some problems: 1. the spokes are fixed to the gas purification disk by welding, which brings about some obvious drawbacks. Firstly, when the spokes are welded on the hub of the gas purification disc, because the welding is a connection mode needing heating, after cooling, the spokes made of metal and the gas purification disc can deform to a certain degree, so that the shape of the gas purification disc is influenced; secondly, since the spokes are welded to the hub and spokes of the gas purification disk, the spokes are deformed to a certain extent, and in order to limit the gas purification disk caused by the deformation, the air purification disk needs to have an outer ring so as to fix the spokes (see fig. 1); third, since the spokes are welded to the hub, once the weld is loosened, the spokes may fall off and shoot out at high speed during high speed rotation, resulting in personal injury. 2. The welding of the spokes is difficult. When the spokes are welded on the spokes, the spokes need to be uniformly distributed on the spokes, so that a separate clamp needs to be designed for clamping the spokes and the hub; in addition, the number of solder joints is large and small, and soldering is difficult. 3. The spoke shape is single, mainly circular, and some parts adopt other shapes. Circular spoke simple to operate, but the product of diameter and quantity receives the restriction of the diameter of wheel hub, in order to improve purification efficiency, needs to improve the rotational speed of gas purification dish, has had higher requirement to the rotational speed of whole gas purification dish like this. 4. The spokes have a large wind resistance due to the shape of the gas purification disk, and a more powerful exhaust fan is required to provide sufficient negative pressure, which leads to an increase in the manufacturing cost, volume and noise of the mechanical soot removing device. 5. Once the spokes deform, the gaps of the spokes change, and as the gaps of the spokes change, part of gas passes through the gas purifying disc, oil drops, oil mist and other solid particles are not removed, and the atmosphere can still be polluted.

Chinese patent No. CN109794102A discloses a gas purification unit, which comprises a central disc and at least 6 spokes, wherein the spokes are radially extended and arranged on the central disc, the inner ends of the spokes are fixed on the central disc, the central disc is connected with a driving device for driving the central disc to rotate, and one side of the spokes in the rotation direction is provided with at least one concave diversion trench.

The above patent documents show different forms of gas purification disks, respectively, but all face the above-mentioned problems. The utility model provides a technical scheme can realize following technological effect:

1. when the hub of the gas purification disk is connected with the spokes, the gas purification disk is fixed without an additional clamp, and the mounting is convenient.

2. The spoke is fixed to the hub of the gas purification disc through the fixing device, and the spoke is not connected through welding, so that thermal deformation cannot occur between the spoke and the hub of the gas purification disc, and thermal stress cannot exist.

3. The spoke and the wheel hub of the gas purification disk are connected in a mechanical clamping manner, are tightly connected, avoid unsafe connection similar to cold solder joint, cannot fall off in the using process, and are safe and reliable.

Disclosure of Invention

The utility model provides a wheel hub for a gas purification disc, which comprises a first disc and a second disc, wherein the first disc is provided with a hole connected to a rotary driving device, and the rotary axis of the first disc coincides with that of the second disc; the first disk and the second disk are detachably connected together; wherein the first disc is provided with an annular stop surface, the rotational axis of which coincides with the rotational axis of the first disc.

Wherein the surface of the bearing block is a cylindrical surface, a circular table surface or a rotating curved surface of a function curve.

The hub further comprises a plurality of fixing blocks arranged along the circumference of the hub, and a groove is formed between every two adjacent fixing blocks.

Wherein the ratio of the width-direction dimension to the depth-direction dimension of the groove is 1:1.2 to 4, preferably 1: 2.

The shape of the groove formed between the adjacent fixed blocks is adapted to the shape of the spoke of the gas purification disc.

The fixing blocks are all connected together through the connecting rings to form the fixing device.

Wherein the plurality of fixed blocks are inseparably fixed on the first disk or the second disk.

Wherein said fixing means is detachably fixed to the first disc or the second disc.

Wherein the spokes and the fixing block form an interference fit.

The stop surface, the spokes, and the fixing means are disposed between the first disk and the second disk, which are fixed by the fastening means.

A gas purification disk comprises the hub and a plurality of spokes.

A gas purification device comprises a driving device and a gas purification disk.

The utility model discloses an above technical scheme provides a new wheel hub, can not use reliable and stable web spoke of welded mode and wheel hub to reduce the whole cost of equipment, improved the security of equipment.

Drawings

FIG. 1 illustrates a prior art welded gas purge disk;

fig. 2 shows a gas purification diagram of the present invention with a wheel hub of the present invention;

FIG. 3 shows a schematic view of the gas purification disk of the present invention with the second disk (or after the first disk) removed;

fig. 4 shows a schematic view of the inseparability of the first (or second) disc and the fixing means of the invention;

fig. 5 shows a schematic view of the invention with the first (or second) disc and the fixing means separable;

fig. 6 shows a schematic view of a first disc (or a second disc) of the invention not comprising a fixing means;

figure 7 shows a schematic view of a fixation device of the present invention;

FIG. 8 shows a schematic view of a first disk with partial spokes installed and a fixture;

fig. 9 shows a schematic view of the engagement of the stop surface of the spoke and the stop surface of the first disk.

Detailed Description

Referring to fig. 1, fig. 1 shows a gas purification disk consisting of an outer ring 100, spokes 200 and a hub 300. The spokes 200 are welded to the outer ring 100 and the hub 300, respectively. Because spoke 200 and hub 300 welded connection, can be heated in the spoke 200 and the hub 300 junction joining process, after the cooling, the spoke can take place certain degree with the hub junction and warp, if the spoke does not pass through welded connection with outer ring 100, then whole gas purification dish can lead to the spoke to distribute inhomogeneously in the circumferential direction because the deformation of spoke. The uneven distribution of the spokes causes the problems of poor dynamic balance effect, poor gas purification effect and the like. The gas purification disk needs to be fixed on a shaft and driven by a motor, and if the dynamic balance has a large problem, the shaft and the motor are very easy to damage.

As shown in fig. 2, the gas purification plate of the present invention is assembled. In fig. 2, the spokes 2 have a particular shape and the spokes 2 and the hub 3 are connected together by clamping.

In fig. 2, the first and second discs of the hub are provided with corresponding through holes through which bolts or the like are passed to clamp the first and second discs and the workpiece therebetween.

Fig. 3 shows a schematic view of the gas cleaning disc of fig. 2 after removal of the second disc 32 (or the first disc 31) of the hub. In fig. 3, on the first disc 31 (or the second disc 32), the spokes are fixed circumferentially by the fixing means 4. The fixing device comprises a plurality of fixing blocks, the fixing blocks are approximately in a fan shape, the fixing blocks are arranged along the circumferential direction, a groove is formed between every two adjacent fixing blocks, the cross sections of the grooves are approximately the same in shape and used for accommodating spokes; preferably there is a substantially interference fit between the slots and the spokes whereby no play is created between the fixing means and the spokes are not tightly secured to the hub and do not vibrate or rattle during use. If the engagement between the slots and the spokes is a clearance fit, this is convenient to install, but it must be ensured that the second disk (or the first disk) presses against the spokes to avoid vibration or wobble during rotation.

In fig. 3, the ratio a to b of the dimensions in the width direction and the height direction of the groove formed between adjacent fixed blocks is about 1:1.2 to 4. The slots in such a proportional relationship may receive corresponding spokes. Because the dimension in the height direction is larger than the dimension in the width direction, after the adaptive spokes are installed, when the spokes are driven by the hub to rotate, the height direction of the groove corresponds to the surface of the spokes for impacting the gas to be treated, and the width direction of the groove corresponds to the thickness direction of the groove. Since the ratio a to b of the dimensions of the groove in the width direction and the height direction is about 1:1.2 to 4, consequently, can install corresponding spoke, when the spoke occupies less size in the circumferential direction, can have the working face of broad, thereby improved by the utility model discloses the work efficiency of the gas purification dish that wheel hub constitutes. In the present invention, the ratio of a to b of the groove used as the embodiment is 2.

Referring to fig. 4, the first disc 31 and the fixing means 4 are inseparable. In this case, the first disc 31 is actually made from the same blank as the fixing means 4. The blank is made by casting and the first disc 31 and the details of the fixture 4 are machined out by machining. In this way, a more ideal first disc 31 and fixing means 4 can be obtained, without the problem of requiring assembly of the first disc 31 and fixing means 4. In this case, the fixing ring 41 of the fixing device 4 described above is not actually required, since the fixing device does not need to be connected to the fixing block by means of a fixing ring, which can be understood as being integrally formed with the first disk. Under the fixed integrated into one piece's of first dish and fixing device condition, both need not equipment, cooperation, can use after the direct processing finishes.

Fig. 5 shows a schematic view in which the first disc 31 and the fixing means 4 are separable. In fig. 5, the fixing device 4 includes a plurality of fixing blocks 41 and a connection ring 42. The connecting ring 42 and the fixing blocks 41 may be made of metal or plastic. The connecting ring 42 and the fixing blocks 41 are structurally integrated, and can be obtained by machining or manufactured by metal die-casting or injection molding.

The first plate 31 of fig. 5, which is separable from the fixture 4, is typically first formed as a blank by die casting or forging, and then machined to form the detail parts, which are then machined to form the more precise first plate. The fixing means may be made by precision casting or injection moulding. If the fixing device 4 is made as an inseparable unit with the first disk, the detail of the fixing device 4 is machined, which results in higher costs. The first disc 31 and the fixing means 4 are separable, which means that the first disc 31 and the fixing means 4 can also be made of different materials, for example, the first disc is made of an aluminum alloy or a magnesium alloy, and the fixing means 4 is made of a polymer.

Fig. 6 shows a schematic view of the first disc 31 in the case where the first disc and the fixing means 4 are separable. In fig. 6, the first disk 31 is provided with a catch surface 311, and the catch surface 311 in fig. 6 is cylindrical. The stop surface 311 may engage the spoke to fix the spoke in the axial direction. The catch surface 31 may also be a cylindrical surface, a circular table surface or a surface of revolution of a functional curve. The shape that holds the shelves surface mainly depends on the shape of spoke, is provided with the shelves surface of ending on the spoke, should hold the shelves surface and need can mutually support with the shelves surface of ending on the spoke to form stable cooperation relation, can effectually fix the spoke in radial direction.

The first disc 31 in fig. 6 also has a receiving groove 32; the receiving groove 32 is for receiving the coupling ring of the fixture 4. The connection ring 42 is accommodated in the accommodation groove 32; the connection ring functions to connect the fixing blocks, and at the same time, since the connection ring 42 is received in the receiving groove 32, the connection ring does not affect the fixing of the spokes. Furthermore, the receiving groove 32 has a positioning means, which is adapted to the positioning means of the connecting ring 42 in the receiving groove 32. During assembly, the first disk is first prevented upward by the portion with the stop surface 311, then the connecting ring is installed in the receiving groove 32, and then the spokes are installed between the fixing blocks.

Fig. 7 shows a schematic view of the fixation device. The connection ring 42 and the fixing blocks 41 of fig. 7 are integrally provided to form a fixing device.

Fig. 8 shows a schematic view of a part of the spoke 2 mounted on the first disc 31 and the fixing means 4. As can be seen in fig. 8, the stop surface 311 on the first disc 31 cooperates with the stop surface on the spoke, so as to fix the spoke 2 in the radial direction; the spokes 2 are placed between adjacent fixing blocks 41 of the fixing device 4, thereby fixing the spokes 2 in the circumferential direction. After the spokes 2 have been mounted between adjacent fixing blocks 41 of the fixing device 4, the second disc is mounted, the spokes and the fixing device being fixed between the first and second discs, so that the spokes are fixed in the axial direction.

Fig. 9 is a schematic (partial) view of the cooperating relationship of the spokes 2 and the first disc 31, after the fixing means 4 have been removed from the first disc 31. As can be seen from the figure, the stop surface of the spoke cooperates with the stop surface 311 of the first disc, thereby fixing the spoke 2 in the radial direction.

The utility model discloses an assembly process when wheel hub is used for gaseous purification dish as follows: after placing first dish stably, assemble fixing device and first dish (if fixing device and first dish be integrative then directly place first dish and fixing device stably can), all place the spoke between fixing device's fixed block afterwards, the spoke has all been placed to the clearance that all fixed blocks formed, later with the second dish assemble first dish and fixing device on, will use fastening device such as bolt to fasten first dish (and fixing device), spoke, second dish together afterwards.

In the utility model, the first disk, the second disk and the fixing device are all provided with rotation centers, and the rotation centers of the first disk, the second disk and the fixing device are superposed; the utility model discloses a hold the centre of rotation on shelves surface and fixing device's centre of rotation coincidence. Install the spoke the utility model discloses a wheel hub is last after, the spoke will center on the utility model discloses a first dish, second dish and fixing device's centre of gyration is rotatory.

The utility model discloses a wheel hub is as the partly of gaseous purification dish, can be safe, high-efficient, low-cost realization spoke fixed on wheel hub to can produce the gaseous purification dish that has good performance.

The utility model discloses a behind the wheel hub installation spoke, have apparent effect, the utility model people has carried out some experiments.

Results of the experiment

In order to experiment the utility model discloses a purifying effect, we have carried out the experiment based on following condition:

the diameter of the gas purification disk is as follows: 30 cm; the outer diameter of the hub of the gas purification disc is 13 cm; the gas purification disk comprises the following components: 1300 rpm. Under the closed condition, the oil smoke simulation generating device is used for generating oil smoke, and the purifying device provided with the gas purifying disc is used for treating the oil smoke generated by the oil smoke generating device. The experimental time is 11 minutes, the oil smoke simulation generating device generates 2g of oil smoke per minute, and the oil smoke purifying device generates oil smoke gas containing 40g of pollutants in 10 minutes; the smoke purifying device works for 11 minutes in total. A non-woven fabric piece with the diameter of 10cm is fixedly arranged at the position 5cm behind the gas purification disk, the weight of the clean non-woven fabric is weighed before the test, and the weight of the non-woven fabric is weighed after the test. A decibel meter is arranged 20cm below the gas purification disk.

The ratio of a to b of the groove adopted in the experiment of the utility model is 2; correspondingly, the ratio of the width to the thickness of the spokes is also 2, so that the spokes can be stably installed in the grooves.

The variables tested were gas flow rate, number of spokes and shape of the gas purification disk, and the test results were as follows:

the above formula for calculating the purification rate is as follows: reduction of contaminants/total amount of contaminants.

From the upper table, used the utility model discloses wheel hub's air purification dish, because the spoke shape of installation helps improving work efficiency, consequently such air purification dish the purifying rate is high, and purifying effect is good. The reason for this is that: removing liquid drops and solid particles in the gas by using rotating spokes, wherein the spokes are used for rotating and impacting heavier liquid or particles in the gas; during the impact, the spokes mainly play a role in impacting and the surface of the spokes facing to the rotating direction; for circular spokes, the first half of the surface of the spoke facing in the direction of rotation is the surface that primarily serves as the impact. For example, for a spoke diameter x, the effective impingement length along the diameter of the gas purification disk is x/2. The number of spokes provided for a given effective impact length is limited by the diameter of the hub of the gas purification disk, and given a hub diameter of d, the number of spokes must be less than π d/x. For example, in the case of a hub diameter of 13 cm and a spoke diameter of 2 mm, the limit value for the number of spokes is pi 130/2 ≈ 204, i.e. it is absolutely impossible to exceed 204 spokes, in fact 180 spokes are already the limit value. Once the hub diameter is determined, the upper limit of the number of spokes is determined, as is the gap between adjacent spokes, in which case at a certain gas flow rate a certain rotational speed of the gas cleaning disc is required, which rotational speed is sufficient to be able to hit all the gas flowing through the gap within a certain time. If the gas flow rate is large, then the rotational speed of the gas purification disk needs to be large, given the effective impingement length and adjacent spoke clearances. Although some problems can be solved by increasing the rotation speed, there are also the following problems: there is a limit to the increase of the rotation speed, which is limited by the rotation speed of the motor, and in addition, too high a rotation speed consumes excessive energy and generates excessive noise. Due to the limited rotating speed, a good purifying effect is difficult to obtain on certain occasions with serious pollution.

The utility model provides an among the technical scheme, supposing b ═ x, then a ≈ 2x, and the equivalent length of effective striking is x. At this time, the upper limit of the number of spokes is still a certain value less than π d/x. Under the unchangeable condition of spoke quantity, the utility model discloses an effective striking length of spoke becomes two times original. Thus, the rotational speed of the gas purification disk can be reduced to about one-half of that of the circular spokes under a certain gas flow rate.

The reason why the purification rates of examples 1, 2 and 3 of the present invention were high in the experiment, and the purification rates of examples 4 to 8 were different but significantly lower than those of examples 1 to 3 of the present invention was explained above.

The ratio of the dimension in the width direction to the dimension in the depth direction of the groove of the wheel hub of the present invention is 1:1.2 to 4, preferably 1:2, so that the corresponding spoke can be installed, thereby using the gas purification disk of the wheel hub of the present invention to obtain the excellent effect of the above experiment.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (13)

1. A hub for a gas cleaning disc, comprising: comprising a first disk provided with a hole connected to a rotary drive and a second disk, the axis of rotation of the first disk coinciding with the axis of rotation of the second disk; the first disk and the second disk are detachably connected together; wherein the first disc is provided with an annular stop surface, the rotational axis of which coincides with the rotational axis of the first disc.

2. A hub for a gas cleaning disc as defined in claim 1, wherein: the bearing surface is a cylindrical surface, a circular table surface or a rotating curved surface of a function curve.

3. A hub for a gas cleaning disc as defined in claim 1, wherein: the hub further comprises a plurality of fixing blocks arranged along the circumference of the hub, and a groove is formed between every two adjacent fixing blocks.

4. A hub for a gas cleaning disc as defined in claim 3, wherein: the ratio of the width-direction dimension to the depth-direction dimension of the groove is 1:1.2 to 4.

5. A hub for a gas cleaning disc as defined in claim 4, wherein: the ratio of the width-direction dimension to the depth-direction dimension of the groove was 1: 2.

6. A hub for a gas cleaning disc as defined in claim 3, wherein: the shape of the groove formed between the adjacent fixed blocks is adapted to the shape of the spoke of the gas purification disc.

7. A hub for a gas cleaning disc as defined in claim 3, wherein: the fixing blocks are all connected together through the connecting rings to form the fixing device.

8. A hub for a gas cleaning disc as defined in claim 3, wherein: wherein the plurality of fixed blocks are inseparably fixed on the first disk or the second disk.

9. A hub for a gas cleaning disc as defined in claim 7, wherein: the fixing device is detachably fixed on the first disc or the second disc.

10. A hub for a gas cleaning disc as defined in claim 3, wherein: and interference fit is formed between the spokes and the fixed block.

11. A hub for a gas cleaning disc as defined in claim 3, wherein: the stop surface, the spokes, and the fixing means are disposed between the first disk and the second disk, which are fixed by the fastening means.

12. A gas purification disk, comprising: a hub for a gas cleaning disc comprising a hub according to claims 1-11, and a plurality of spokes.

13. A gas purification device, characterized in that: comprising a drive means and a gas cleaning disc according to claim 12.

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