CN219691827U - Stable shell device suitable for fan - Google Patents

Abstract

The utility model belongs to the technical field of fans, and particularly relates to a stable shell device suitable for a fan, which comprises: the lower end of the diversion bin extends outwards along the outline of the flange to form a volute, and the center of the diversion bin is provided with a centrifugal impeller; the centrifugal impeller comprises an axle, a shield and centrifugal blades, wherein the axle, the shield and the centrifugal blades are coaxially arranged, the shield is coaxially connected with the upper end and the lower end of the axle, a plurality of centrifugal blades are radially arranged on the axle, a plurality of guide grid bars are uniformly and vertically arranged on the outer edge of the shield, the number direction of the guide grid bars corresponds to that of the centrifugal blades, and an angle adjuster for adjusting the guide grid bars is arranged on the side face of the shield in a leaning manner. Through setting up stable reposition of redundant personnel and the reinforcing speed-up of diversion grid number direction corresponding centrifugal blade, angle modulation ware adjustment diversion grid direction, pressure sensor detects pressure, and grid filter spare is according to the pressure adjustment scrubbing accuse pressure overall arrangement, shallow counter bore and sound absorbing layer amortization fall of falling one's voice, synthesize the stable casing device that realizes being fit for the fan promotes the velocity of flow and the effect of noise abatement.

Description

Stable shell device suitable for fan

Technical Field

The utility model belongs to the technical field of fan equipment, and particularly relates to a stable shell device suitable for a fan.

Background

The centrifugal fan is a fluid machine for inputting energy to increase the pressure of gas and exhausting, and is widely applied to cooling and ventilation of industrial and mining, tunnels, transportation, buildings and air conditioning household appliances by the characteristics of large suction force, low noise and compact structure, and the high-speed rotation centrifugal impeller accelerates and redirects the gas, so that kinetic energy is converted into potential energy or energy transfer conversion process of pressure.

The centrifugal fan comprises a volute and a centrifugal fan, wherein air inlets are formed in two sides of one side of the volute, air outlets are formed in tangential directions, the centrifugal fan drives a centrifugal impeller and fluid to rotate to generate centrifugal force, the fluid can enter the volute at a high speed along a blade runner, the fluid is decelerated due to gradual widening of the runner, part of kinetic energy is converted into static pressure energy, and higher pressure flows to the air outlets.

The volute is a volute type drainage chamber for short, and the relationship between the structure type of the volute and the interface size of the matched equipment is more intimate. The cross section of the flow guiding cavity of the volute is nearly circular, and the stress of the volute is related to local stress caused by different thickness and different strength in the joint of the volute base and the longitudinal cross section of the volute besides the thin-wall stress caused by the internal pressure; the flow of air through the volute generates centrifugal force in the bent flow passage, so that pressure difference is generated between the inner edge and the outer edge of the volute, the pressure difference depends on the air flow speed and the abrupt change condition of the profile of the section, the average flow speed is proportional to the flow passing through the section, and the differential pressure value between the inner edge and the outer edge of the volute reflects the relative flow value passing through the fan.

At the same time, the flow speed accelerates the possibility of changing the final aggravated airflow characteristic from laminar flow to turbulent flow, and the turbulent flow is an important expression of the turbulent flow state of the fluid turbulence, so that the flow speed of the airflow is positively and intentionally improved, and meanwhile, attention is paid to taking active measures to avoid the accompanying turbulence reduction.

The prior Chinese patent with the publication number of CN214887930U discloses an evaporation fan, which comprises a volute front plate, a volute air duct plate, a volute rear plate, a smoke outlet connecting plate and a smoke outlet flue, wherein the volute front plate is provided with a smoke inlet, the volute front plate, the volute air duct plate and the volute rear plate enclose a smoke outlet, the smoke outlet connecting plate and the smoke outlet flue are positioned above the smoke outlet, a plurality of volute air duct plate extending parts are respectively arranged at contact sides of the volute air duct plate and the volute front plate and the volute rear plate at intervals, the volute front plate and the volute rear plate are respectively provided with an elongated hole which is adaptive to the volute air duct plate extending parts, and the volute air duct plate extending parts penetrate through the elongated holes of the volute front plate and the volute rear plate to be bent and fastened successively. According to the utility model, by overcoming the welding defect, the oil smoke corrosion and aging attack are effectively overcome, so that the service life is prolonged, the structure is simple, and the manufacturing cost of the tooling die is reduced.

The prior art scheme has the following defects: although the problem of welding defect is solved, the stable shell device suitable for the fan is still lacking, and the problems of improving drainage speed and reducing noise and asthma are not fundamentally solved.

Disclosure of Invention

The utility model aims to provide a stable shell device suitable for a fan, which meets the requirements of improving drainage speed and reducing noise and asthma and effectively ensures the stability, safety, reliability and perfection of the stable shell device suitable for the fan.

In order to solve the above technical problems, the present utility model provides a stable housing device suitable for a fan, comprising: the centrifugal impeller comprises a wheel shaft, a shield and centrifugal blades, wherein the wheel shaft is coaxially arranged, the shield is coaxially connected with the upper end and the lower end of the wheel shaft, a plurality of centrifugal blades are radially arranged on the wheel shaft, a plurality of guide grid bars are uniformly and vertically arranged on the outer edge of the shield, the number directions of the guide grid bars are corresponding to those of the centrifugal blades, and an angle adjuster for adjusting the guide grid bars is arranged on the side face of the shield.

Further, for promoting the stable casing device that is fit for the fan to cooperate the mounting member of drainage direction adjustment, centrifugal impeller still includes a plurality of adjusting screw that all are equipped with of guard shield top surface, adjusting screw is used for cooperating the angle modulation ware adjustment water conservancy diversion grid.

Further, in order to push the stable shell device suitable for the fan to have a driving device for drainage and speed increasing, the centrifugal impeller further comprises a driving motor electrically connected with the wheel shaft.

Furthermore, in order to form a structure suitable for a stable shell device of the fan and capable of promoting wind pulling and accelerating and smooth drainage, the tail end of the volute body is connected with an outlet end, and a flow guide cavity is arranged at the lower end of the flow guide bin towards the outlet end in a penetrating way.

Further, in order to ensure that the stable shell device suitable for the fan has a device for adjusting the pressure condition, the centrifugal impeller further comprises a pressure sensor arranged at the tail end of the flow guide cavity.

Further, for achieving the stable shell device decontamination that is fit for the fan and remove miscellaneous and reasonable adjustment pressure velocity of flow, the water conservancy diversion chamber end is equipped with grid filter spare, grid filter spare including the upper end install in the terminal preceding filtration of water conservancy diversion chamber with preceding filtration lower extreme swing joint has post-filtration, post-filtration corresponds pressure sensor is used for closing the adjustment pressure velocity of flow soon, the outside horizontal butt of post-filtration has the cylinder.

Furthermore, in order to adjust the stable shell device suitable for the fan to mute and reduce noise and eliminate reverberation, the inner wall of the diversion bin is provided with a sound absorption layer, and the inner wall of the diversion cavity is densely provided with a plurality of shallow counter bores for silencing and reducing noise.

Further, in order to promote the stable shell device suitable for the fan to exert the induced draft and accelerate, a guide cover is sleeved between the guide cabin and the centrifugal impeller, and a volute tongue for pulling out wind is concavely arranged at the tail end of the guide cavity.

Furthermore, in order to strengthen the stable shell device suitable for the fan, the stable shell device has stable driving and reliable action functions, the cylinder tube is connected with a peripheral pump body, and the pressure sensor is electrically connected with the driving motor.

Furthermore, for perfecting the energization of the stable shell device for the fan to promote centralized control and unified treatment, the driving motor, the pressure sensor and the air cylinder are all connected with a main control console.

The beneficial effects of the utility model are as follows:

1. the centrifugal impeller is additionally arranged in the diversion bin to realize stable diversion and speed up, the number of the centrifugal blades is set to be preferably 6-24, the diversion is continuously affected by the too small number, and the driving load is increased and the surge flow probability is increased if the number is too large; the diversion grid bars are used as uniform diversion cavities for diversion of the diversion bin, the diversion grid bars are recommended, but not limited, to be set as integral multiples of centrifugal blades, so that the diversion and the acceleration are facilitated to form a circulation period, the outer diameter specification of the centrifugal impeller is small, the number of the diversion grid bars is equal to that of the centrifugal blades, gaps among the diversion grid bars ensure the diversion and the acceleration, noise reduction and asthma relief, and the shield promotes the reinforcement, maintenance and stability; the angle adjuster measures and adjusts the trend of the diversion fence and keeps consistent with the tangential direction of rotation of the centrifugal blade, and the adjusting screw is matched with the direction adjustment and the fastening and the disassembly; the driving motor drives the streamline centrifugal blades to facilitate acting on gas and improving kinetic energy, the pressure sensor is sensitive to pressure measurement conditions, the grid filter piece presses the distribution grid filter layout of the pressure measurement conditions of the pressure sensor, if the pressure of air flow is too high, the centrifugal force effect enables fluid to flow closely to the inner wall of the diversion cavity rapidly, in order to avoid forming too large impact on subsequent equipment, the front filter and the rear filter are overlapped to form dense outer grids and sparse inner grids so as to block high-speed fluid, the front filter is used for removing dirt and impurities, and the air cylinder accurately acts to promote the rear filter to adjust the pressure and flow rate, so that an active protective barrier is formed; the volute body flow guide cavity guides the air flow guided by the centrifugal impeller to extend to the outlet end, partial dynamic pressure is converted into static pressure, and the requirements of a stable shell device suitable for a fan for improving the flow speed and reducing noise are further met.

2. The flow guiding cavity inner wall is additionally provided with the variable-diameter and variable-depth shallow counter bore, the counter bore multi-cavity structure forms the resistive anti-resonance muffler, the effects of noise reduction and noise removal are improved, and the sound absorption layer filters aftersounds; the flow guide cover with the upper end face converging inwards promotes the flow suction and the speed increase, the volute tongue with the concave structure plays a role in wind extraction and drainage, the multi-component connection master control console is convenient for unified control and centralized processing, and the stable, reliable, safe and environment-friendly effect of the stable shell device suitable for the fan is comprehensively realized.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

For a clearer description of embodiments of the utility model or of solutions in the prior art, the drawings that are required to be used in the description of the embodiments or of the prior art are briefly described below, it being obvious that the drawings in the description below are some embodiments of the utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded elevational view of a stable housing assembly of the present utility model for a fan;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is an enlarged view at B in fig. 1.

In the figure:

1. a diversion bin; 2. a volute casing; 3. a centrifugal impeller; 4. a wheel axle; 5. a shield; 6. centrifugal blades; 7. a diversion grid; 8. an angle adjuster; 9. adjusting a screw; 10. a driving motor; 11. an outlet end; 12. a diversion cavity; 13. a pressure sensor; 14. pre-filtering; 15. post-filtering; 16. a cylinder; 17. a sound absorbing layer; 18. shallow counter bore; 19. a guide cover; 20. volute tongue.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, the stable housing device for a fan of the present utility model includes: the utility model provides a centrifugal impeller that water conservancy diversion storehouse 1, water conservancy diversion storehouse 1 lower extreme outwards extends along the flange profile has volute 2, water conservancy diversion storehouse 1 center is equipped with the centrifugal impeller 3 that is used for stable drainage to accelerate, centrifugal impeller 3 is including coaxial shaft 4 that is equipped with, guard shield 5 and centrifugal blade 6, guard shield 5 coaxial coupling shaft 4 upper and lower extreme, shaft 4 radial all is equipped with a plurality of centrifugal blade 6, guard shield 5 outer fringe evenly stands and is equipped with a plurality of water conservancy diversion bars 7, water conservancy diversion bars 7 quantity direction all corresponds centrifugal blade 6 setting, guard shield 5 side is by being equipped with the angle modulation ware 8 that is used for adjusting water conservancy diversion bars 6. The centrifugal impeller 3 further comprises a plurality of adjusting screws 9 which are arranged on the top surface of the shield 5, and the adjusting screws 9 are used for adjusting the angle of the diversion grid 6 in cooperation with the angle adjuster 8.

The centrifugal impeller 3 further comprises a drive motor 10 to which the axle 4 is electrically connected. The tail end of the volute 2 is connected with an outlet end 11, and a diversion cavity 12 is penetrated at the lower end of the diversion bin 1 towards the outlet end 11. The centrifugal impeller 3 further comprises a pressure sensor 13 arranged at the end of the flow guiding cavity 12. The tail end of the flow guide cavity 12 is provided with a grating filter piece, the grating filter piece comprises a front filter 14, the upper end of which is arranged at the tail end of the flow guide cavity 12, and a rear filter 15, the lower end of which is movably connected with the front filter 14, and the rear filter 15 corresponds to the pressure sensor 13 and is used for screwing and adjusting the pressure and flow rate; the outside of the post-filter 15 horizontally abuts against the cylinder 16.

Obviously, in this embodiment, the centrifugal impeller 3 is additionally arranged to promote stable drainage and speed up, the diversion grid 7 becomes a uniform diversion cavity for drainage of the diversion bin 1, the arrangement of the diversion grid 7 is recommended but not limited to be an integral multiple of the number of the centrifugal blades 6, the trend of the diversion grid 7 is consistent with the tangential direction of rotation of the centrifugal blades 6, the drainage and speed up are facilitated to form a circulation period, uniform gaps among the diversion grid 7 ensure the drainage and speed up, noise reduction and asthma relief, and the angle adjuster 8 measures and adjusts the adjustment screw 9 to be matched and adjusted and fastened and detached; the shield 5 promotes the fixation, maintenance and stability, the driving motor 10 drives the streamline centrifugal blade 6 to facilitate acting on gas and improving kinetic energy, and the pressure sensor 13 senses pressure conditions; the air flow led in by the centrifugal impeller 3 is concentrated and guided by the guide cavity 12 and extends to the outlet end 11, including but not limited to adding a grid filter element to adjust grid filtration according to pressure, the filtering 14 decontaminates and removes impurities before the pressure is normal, the centrifugal effect makes the high-pressure fluid cling to the inner wall of the guide cavity 12, the filtering 15 is overlapped into dense outer grid and sparse inner grid after the arrangement of the front filtering 14 to prevent the high-speed fluid from seriously impacting the back channel, the back filtering can be set into an outer dense inner sparse state, the central part is overlapped with the front filtering, the action of the cylinder 16 promotes the back filtering 15 to adjust the pressure and flow velocity to form effective active protection, and the aims of stable acceleration and reliable drainage of a stable shell device suitable for a fan are further realized.

Working principle: the centrifugal blades 6 have different dimensions, the direction angle of the fixed diversion grid 7 is flexibly adjusted to realize reasonable diversion cavity separation and vertical support-unscrewing of the adjusting screw 9, the angle adjuster 8 horizontally leans against the side surface of the shield 5, 0 ⁰ The line is aligned with the centre of the wheel axle 4The line enables the rotation tangential direction or the set direction to be consistent with the trend of the diversion grid 7, the scale line of the angle adjuster 8 and the direction of the diversion grid 78 are overlapped or parallel to be corrected, a plurality of adjusting screws 9 are screwed in sequence to complete the integral correction, and the diversion grid 7 can be flexibly increased or decreased to meet the requirement; referring to the pressure sensor 13, the pressure normally accords with the standard, the front filter 14 is used for removing dirt and impurities, and when the pressure is too high, the rear filter 15 is pushed by the air cylinder 16 to be overlapped with the front filter 14 to form a grid filter piece with dense outer grids and sparse inner grids so as to block high-speed fluid.

As shown in fig. 1 to 3, the inner wall of the diversion chamber 1 is provided with a sound absorbing layer 17, and the inner wall of the diversion chamber 12 is densely provided with a plurality of shallow counter bores 18 for noise reduction. A guide cover 19 is sleeved between the guide cabin 1 and the centrifugal impeller 3, and a volute tongue 20 for drawing wind is concavely arranged at the tail end of the guide cavity 12. The cylinder 16 is connected with a peripheral pump body, and the pressure sensor 13 is electrically connected with the driving motor 10. The driving motor 10, the pressure sensor 13 and the air cylinder 16 are all connected with a main control console.

More specifically, in this embodiment, the inner wall of the flow guiding cavity 12 is additionally provided with a variable-diameter and variable-depth shallow counter bore 18, and the counter bore multi-cavity structure forms a resistive anti-resonance muffler to improve the effects of silencing, noise reduction and sound removal, and the sound absorbing layer 17 filters the aftersound; the air guide sleeve 19 promotes the suction flow to speed up, the volute tongue 20 with the concave structure pulls out wind and guides the flow, the multi-component connection master control console is convenient for uniformly controlling and centralizing the treatment, and the effects of speed up and noise reduction and environmental protection of the stable shell device suitable for the fan are realized.

In summary, the guide grid bars 7 of the stable shell device suitable for the fan form a guide circulation period for the integral multiple of the centrifugal blades 6, the trend of the guide grid bars 7 is consistent with the tangential direction of rotation of the centrifugal blades 6, uniform gaps among the guide grid bars 7 ensure the speed increase of guide, noise reduction and asthma elimination, the angle regulator 8 is regulated and fastened by the adjusting screw 9, and the protection cover 5 is reinforced and maintained stably; the driving motor 10 drives the streamline centrifugal blade 6 to facilitate acting on gas and improving kinetic energy, the pressure sensor 13 measures pressure, and the diversion cavity 12 extends the air flow in the centrifugal impeller 3 to the outlet end 11 to form high-pressure fluid; the grid filter adjusts the grid filter layout according to the measured pressure to buffer the high-pressure airflow to seriously impact the back passage, and the cylinder 16 acts to promote the back filtration 15 to adjust the pressure; the shallow counter bore 18 is used for silencing and reducing noise, the sound absorption layer 17 is used for filtering out residual sound, the front filter 14 is used for removing dirt and impurities, the air guide cover 19 and the volute tongue 20 are used for draught drainage, and the effects of improving flow speed and eliminating noise of a stable shell device suitable for a fan are achieved.

In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present utility model, it should be noted that the directions or relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or relationships based on the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of the claims.

Claims (10)

1. A stable housing assembly for a fan, comprising;

the lower end of the diversion bin (1) is outwards extended with a volute body (2) along the outline of the flange;

a centrifugal impeller (3) for stabilizing drainage and accelerating is arranged in the center of the diversion bin (1);

the centrifugal impeller (3) comprises a wheel shaft (4), a shield (5) and centrifugal blades (6) which are coaxially arranged;

the shield (5) is coaxially connected with the upper end and the lower end of the wheel shaft (4);

the wheel shafts (4) are radially provided with a plurality of centrifugal blades (6);

a plurality of diversion grid bars (7) are uniformly arranged on the outer edge of the shield (5);

the number direction of the diversion grid bars (7) is arranged corresponding to the centrifugal blades (6);

the side surface of the shield (5) is provided with an angle adjuster (8) for adjusting the diversion grid bars (7).

2. A stable housing arrangement for a wind turbine according to claim 1,

the centrifugal impeller (3) further comprises a plurality of adjusting screws (9) which are arranged on the top surface of the shield (5);

the adjusting screw (9) is used for adjusting the angle of the diversion grid (7) in cooperation with the angle adjuster (8).

3. A stable housing arrangement for a wind turbine according to claim 2,

the centrifugal impeller (3) further comprises a driving motor (10) electrically connected with the wheel shaft (4).

4. A stable housing device for a wind turbine according to claim 3,

the tail end of the volute body (2) is connected with an outlet end (11);

the lower end of the diversion bin (1) faces the outlet end (11) and is provided with a diversion cavity (12) in a penetrating way.

5. A stable housing arrangement for a wind turbine according to claim 4,

the centrifugal impeller (3) further comprises a pressure sensor (13) arranged at the tail end of the diversion cavity (12).

6. A stable housing arrangement for a wind turbine according to claim 5,

the tail end of the flow guide cavity (12) is provided with a grid filter element;

the grid filter piece comprises a front filter (14) with the upper end arranged at the tail end of the diversion cavity (12) and a rear filter (15) with the lower end of the front filter (14) movably connected with the front filter;

the post-filtering (15) is used for adjusting the pressure and the flow rate in a screwing way corresponding to the pressure sensor (13);

the outer side of the rear filter (15) horizontally abuts against a cylinder (16).

7. A stable housing arrangement for a wind turbine according to claim 6,

the inner wall of the diversion bin (1) is provided with a sound absorption layer (17);

the inner wall of the diversion cavity (12) is densely provided with a plurality of shallow counter bores (18) for silencing and reducing noise.

8. A stable housing arrangement for a wind turbine according to claim 7,

a guide cover (19) is sleeved between the guide bin (1) and the centrifugal impeller (3);

the tail end of the flow guiding cavity (12) is concavely provided with a volute tongue (20) for drawing wind.

9. A stable housing arrangement for a wind turbine according to claim 8,

the cylinder (16) is connected with a peripheral pump body through a pipe;

the pressure sensor (13) is electrically connected with the driving motor (10).

10. A stable housing arrangement for a wind turbine according to claim 9,

the driving motor (10), the pressure sensor (13) and the air cylinder (16) are all connected with a main control console.