CN202527023U - Automatic filter screen dedusting device - Google Patents

Abstract

The utility model discloses an automatic filter screen dedusting device, which relates to the technical field of air purifying equipment and is specific to the problems of the need of manually replacing an air filter screen and high equipment maintenance cost existing in the conventional base station ventilation equipment. The automatic filter screen dedusting device comprises an air filter screen, a fan, a power output device and a sensor, wherein the air filter screen is arranged in the shell; the power output device is arranged in parallel at one end of the air filter screen; the sensor is arranged on the side face of the air filter screen, and is connected with the power output device through a control device; the power output device consists of an eccentric block assembly and a gear constant-speed motor which are connected with each other; the eccentric block assembly consists of a connecting rod and at least one eccentric block fixed on the connecting rod; and the eccentric block is contacted with the edge of the air filter screen. The automatic filter screen dedusting device is particularly suitable for ventilation equipment.

Description

A kind of filter screen automatic dust removing apparatus

Technical field

The utility model relates to the air cleaning facility technical field, particularly a kind of filter screen automatic dust removing apparatus that is used for communication base station intelligent aeration equipment.

Background technology

Communication base station intelligent aeration equipment is applicable to communication base station, machine room and the equipment center of unattended duty, and the filter screen in the ventilation equipment is mainly used in the dust in the adsorption chamber outer air, and stops dust to get into inside of base station.This filter screen in use for some time, the laying dust that screen surface can accumulation of thick in case laying dust is too much on the screen pack, will bring many negative effects to ventilation equipment.For example, laying dust too much can stop up the screen pack mesh and cause that ventilation is not smooth, windage strengthens, and causes reducing through the air circulation of ventilation equipment, and then influences refrigeration, causes Operational capability of plant to decline to a great extent, and energy consumption strengthens, operating cost raising etc.; In addition, the part dust also possibly get into inside of base station with circulating current, influences the normal operation of inside of base station equipment.

In existing communication base station ventilation equipment, the air filter screen that is supported by the metal wire side is fixed in the air inlet of equipment, and adopts integral filter net housing mounting means, dismounting regularly, cleaning and repeated use.But, change filter screen through manual type, the filter screen dismounting is frequent, and the unavoidable people of parts is loss, and manually-operated is consuming time, causes cost of equipment maintenance to raise.

Summary of the invention

In the ventilation equipment of existing base station, air filter screen is artificial to be changed, and the problem that cost of equipment maintenance is high, the purpose of the utility model provide a kind of filter screen automatic dust removing apparatus of dedusting automatically.

The utility model solves the technical scheme that its technical problem adopted: comprise the air filter screen, the blower fan that are arranged in the housing, be set in parallel in the PTO of said air filter screen one end and be arranged on the sensor of said air filter screen side; Said sensor links to each other with said PTO through control device; Said PTO is made up of eccentric block assembly that is connected and gear constant-seed motor; Said eccentric block assembly is made up of connecting rod and at least one eccentric block that is fixed on the said connecting rod, and said eccentric block and said air filter screen side edge are touched.

It also comprises the elastomeric element that is arranged at the said air filter screen other end, and said elastomeric element and said PTO are oppositely arranged.

Said elastomeric element is a spring.

Said eccentric block is the semicircle eccentric block.

Said sensor is a wind pressure-sensitive gap sensor.

The effect of this patent is: the filter screen automatic dust removing apparatus of the utility model, and order about the eccentric block assembly by motor and move in a circle, and then the drive air filter screen is done reciprocal simple harmonic motion up and down.In fixed frequency, eccentric block produces exciting, makes air filter screen do the simultaneous vibration of simple harmonic motion up and down, combines the synchronous synergetic effect of the downward active force of spring generation to remove the dust in the air filter screen.Through wind pressure-sensitive gap sensor malleation detection of negative pressure head is installed in the filter screen both sides, is detected air filter screen both sides actual pressure value, control the operation start and stop of dust arrester with this through detection head.The utility model is simple in structure, and dust removing effects is obvious, and is easy to use.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is described further;

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front view of the utility model;

Fig. 3 is the structural representation of the eccentric block spare of the utility model;

Label declaration among the figure:

1-filter screen 2-blower fan 3-PTO 4-casing

301-gear constant-seed motor 303-connecting rod

302-eccentric block 304-elastomeric element

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described in detail, the protection domain that is to be understood that the utility model does not receive the restriction of this specific embodiment.

As depicted in figs. 1 and 2; Air filter screen 1 is vertically installed in the casing of ventilation equipment; Centrifugal blower 2 is positioned at a side of air filter screen 1, and PTO 3 is set in parallel in the lower end of air filter screen 1 and is fixed under the casing and covers, and it is made up of eccentric block assembly and gear constant-seed motor 301.Wherein, Two eccentric blocks 302 are fixed in and constitute rotating eccentric block assembly on the connecting rod 303; One end of connecting rod 303 is electrically connected with the gear constant-seed motor 301 that are arranged at casing 4 outsides; Its other end is connected with bearing on the casing 4, and two eccentric blocks 302 all contact with the bottom of air filter screen 1.Gear constant-seed motor 301 drives eccentric block 302 through connecting rod 303 and moves in a circle; According to the characteristic of eccentric block 302 and end points thereof different distance to connecting rod 303; Air filter screen 1 is produced motive force and exciting force upwards, make air filter screen 1 rise and produce and vibrate.

Be fixed in the upper end that elastomeric element 304 on the casing upper cover is positioned at air filter screen 1, and elastomeric element 304 is oppositely arranged with the eccentric block assembly, elastomeric element 304 can be spring etc.After air filter screen 1 moves up to peak; Under the elastic force effect of gravity and elastomeric element 304; Air filter screen 1 is produced the active force that moves downward; The synchronous synergetic effect of the downward active force that produces with this motive force that makes progress that is produced by PTO 3 and filter screen self gravitation, spring makes the reciprocal simple harmonic motion up and down of air filter screen 1 generation in the ventilation equipment.Gear constant-seed motor 301 drives the eccentric block assembly and maintains certain rotational frequency; In fixed frequency; Eccentric block produces exciting; Make air filter screen doing the simultaneous vibration of simple harmonic motion up and down,, remove the dust in the air filter screen through the vibration of air filter screen and the effect of pumping.In dust removal process, 2 counter-rotatings of device controller control blower fan further improve efficiency of dust collection.

Through wind pressure-sensitive gap sensor; Malleation detection of negative pressure head is installed in the filter screen both sides; Detect air filter screen both sides actual pressure value through detection head; Through inner single-pole double-throw switch (SPDT), transmission start stop signal (it is 150pa that this device is set pressure difference) is controlled the operation start and stop of dust arrester with this in the scope of setting.

According to repeating to hit real vibration theory, each vibration period institute's work of exciting force F is lifted the height of twice amplitude with filter screen, makes it have gravitional force E=mg*2A, and wherein m is the filter screen total quality, and g is an acceleration of gravity, and A is the filter screen amplitude.Filter screen is under the effect of eccentric block; Do reciprocal simple harmonic oscillation through exciting force; Its mechanical energy is equal to filter screen self gravitation potential energy, W=mg*2A, and the reciprocating motion that filter screen is done provides active force by eccentric block in the device; The rotation of eccentric block provides power by the gear constant-seed motor, so the vibration frequency numerical value of filter screen is associated with gear constant-seed motor rotating speed.Motor rotates a week, and filter screen is done the reciprocal simple harmonic motion of one-period, and its process comprises rising and sinks.

The filter screen vibration is rotated the exciting force that produces by eccentric block and is provided, and is subject to the reciprocal simple harmonic motion of self doing, so present embodiment goes out the vibration frequency of filter screen and the Reasonable Parameters that eccentric block need be set through the correlation computations formula to calculating.

Its derivation formula is described below:

The eccentric block area:

$A=\frac{\mathrm{\&pi;}}{180}({{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="HDA0000139605900000011.png,HDA0000139605900000021.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2{\mathrm{\&theta;}}_1+{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}^2{\mathrm{\&theta;}}_2)\&PlusMinus;\frac{b}{2}(c_1-c_2)-\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">r</figure-callout>}}^2$

Eccentric throw:

$R_0=\frac{1}{12A}({{\mathrm{<figure-callout\; id="3"\; label="c"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">c</figure-callout>}}^3}_1-{{\mathrm{<figure-callout\; id="3"\; label="c"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">c</figure-callout>}}^3}_2)$

Eccentricity: M _e=M*R ₀

${\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="HDA0000139605900000011.png,HDA0000139605900000021.png"\; state="\{\{state\}\}">c</figure-callout>}}_1=2\sqrt{{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}_1-{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}$

${\mathrm{<figure-callout\; id="2"\; label="c"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">c</figure-callout>}}_2=2\sqrt{{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}_2-{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}$

${\mathrm{\&theta;}}_1=\arccos \left(\mathrm{\&mu;}\frac{b}{R_1}\right)$

${\mathrm{\&theta;}}_2=\arccos (\&PlusMinus;\frac{b}{R_2})$

In the formula: c ₁-eccentric block orthodrome chord length

c ₂-eccentric block roundlet arc chord length

θ ₁-orthodrome half central angle

θ ₂-little circular arc half central angle

Exciting force: F=M _eω ², wherein ω is the angular frequency that eccentric block rotates, ω=2 π f, so to roll over the computing formula of exciting force F following in the conversion back:

$F=480M{\mathrm{\&pi;}}^2{f}^2(\sqrt[3]{{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}_1-{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}-\sqrt[3]{{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}_2-{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">b</figure-callout>}}^2})/\left\{\mathrm{\&pi;}\right[{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}_1\arccos (\&PlusMinus;\frac{h}{R_1})+{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}_2\arccos (\&PlusMinus;\frac{h}{R_2})]\&PlusMinus;180b(\sqrt{{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}_1-b^2}-\sqrt{{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA0000139605900000011.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}_2-b^2})-180\mathrm{\&pi;}{r}^2\}$

Exciting force F institute work is provided by the gear constant-seed motor, so in a vibration period:

W=PT=F*2A, wherein, P is a gear motor power, and T is the cycle, and F is an exciting force, and A is the displacement that air filter screen is accomplished a simple harmonic oscillation.Formula can be extrapolated the actual parameter of equipment in this specific embodiment thus:

Screen specification: 500mm*500mm*10mm, quality 0.3kg

The related setting parameter of eccentric block is following:

Eccentric block large circular arc radius R1=60mm

Eccentric block roundlet arc radius R 2=30mm

Eccentric block distance of center circle r=20mm

Spacing b=10mm

Through-hole diameter a=5mm

Gear constant-seed motor relevant parameter is following:

Power P=15W

Rotating speed V=100r/min

Frequency 50/60hz

Electric current 0.16A

Capacitance 1.5/450

Rated speed V=100r/min

Can draw device filter screen vibration frequency f=240 time/minute through calculating.

Communication base station intelligent aeration equipment filter screen automatic dust removing apparatus is through wind pressure-sensitive gap sensor judgment means operational mode.Based on the wind pressure-sensitive difference of setting, pressure difference switch detects filter screen pressure at both sides value through malleation detection of negative pressure bar; It is 150pa that this device is set the pressure difference of opening the dust arrester operation; When ventilation equipment operation a period of time filter screen stopped up, filter screen both sides pressure difference surpassed 150pa, and pressure difference switch is provided in control module through the wire transmission signal; Control module is through the unlatching of relay system control gear constant-seed motor, and dust arrester brings into operation.Cleaner is after operation a period of time; Dust begins to reduce in the filter screen; Filtering screen dust-cleaning device is set at 0.5 hour running time, open the dust arrester operation after 0.5 hour control module close dust arrester, when ventilation equipment operation a period of time; Pressure difference switch detects once more opens dust arrester after filter screen both sides pressure reduction surpasses 150pa again, with this as a circulation.

Those skilled in the art will recognize that; The above-mentioned specific embodiment is exemplary; Be in order to make those skilled in the art can better understand this patent content; Should not be construed as is the restriction to this patent protection domain, changes or modifies so long as disclose spiritual any being equal to of being done according to this patent, all falls into this patent protection domain.

Claims (5)

1. filter screen automatic dust removing apparatus; Comprise the air filter screen, the blower fan that are arranged in the housing, be set in parallel in the PTO of said air filter screen one end and be arranged on the sensor of said air filter screen side; Said sensor links to each other with said PTO through control device; It is characterized in that: said PTO is made up of eccentric block assembly that is connected and gear constant-seed motor; Said eccentric block assembly is made up of connecting rod and at least one eccentric block that is fixed on the said connecting rod, and said eccentric block and said air filter screen side edge are touched.

2. filter screen automatic dust removing apparatus according to claim 1 is characterized in that: it also comprises the elastomeric element that is arranged at the said air filter screen other end, and said elastomeric element and said PTO are oppositely arranged.

3. filter screen automatic dust removing apparatus according to claim 2 is characterized in that: said elastomeric element is a spring.

4. according to the described filter screen automatic dust removing apparatus of the arbitrary claim of claim 1 to 3, it is characterized in that: said eccentric block is the semicircle eccentric block.

5. according to the described filter screen automatic dust removing apparatus of the arbitrary claim of claim 1 to 3, it is characterized in that: said sensor is a wind pressure-sensitive gap sensor.

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