CN111148562A

CN111148562A - Dust removing equipment

Info

Publication number: CN111148562A
Application number: CN201880063064.2A
Authority: CN
Inventors: 尼尔斯·费舍尔
Original assignee: Uspro
Current assignee: Uspro
Priority date: 2017-07-28
Filing date: 2018-07-26
Publication date: 2020-05-12
Also published as: DE102017117166A1; WO2019020760A1

Abstract

The invention relates to a dust-removing device with a system for contactless detection of a plurality of filter bodies in a filter device, in particular in a dust-removing device (1), comprising: one or more filter bodies (9); a filter device in which at least one filter body (9) is received; wherein at least one of the filter bodies (9) comprises a signal transmitter (15) for transmitting electromagnetic waves; a central unit (19) having a signal receiver (17) for receiving the electromagnetic waves emitted by the signal emitter (15); wherein the electromagnetic waves have a frequency of at least 300 MHz.

Description

Dust removing equipment

Technical Field

The invention relates to a dust-collecting device having one or more filter bodies and to a method for operating a dust-collecting device.

Background

Large amounts of dust are released, mainly in large combustion and industrial plants, which dust must first be passed through dust-removal devices before it is allowed to escape into the exhaust gas. Dust removal devices are technical devices for cleaning dust-containing exhaust or exhaust gas streams. Industrial dusts are very diverse and generally have a particle size between 0.01 μm and 1000 μm.

The use of different separation types and filter types depends on the composition of the dust, its concentration, the spatial conditions and the size. The quality standard of the dedusting method is the degree of separation. Separators with a filter function are increasingly used in industrial waste gas purification and particle separation.

In separators with filtration, the dusty gas impinges on a permeable porous layer which traps the dust and allows the gas flow to pass through. In the filter device this porous layer is the filter body. Separators with a filtering function can be divided into two groups, i.e., a depth filter and a surface filter, according to their operating principle.

When the exhaust gas flows through the filter body of the surface filter, a large part of the dust particles adheres to the inflow side of the filter body. This produces a filter cake which assumes the main purification efficiency. The filter cake is removed periodically. Surface filters are used for reducing emissions and process gas purification and for product recovery. The mass production models of surface filters are primarily tube filters, bag filters, filter plates, candles, filter cartridges or filter cartridges.

Depth filters are primarily composed of a filter body with a large cavity volume in which particles can accumulate. Basically, the separation principle functions as a sieving effect, sedimentation, diffusion and inertia effect. Deep filters are used mainly to purify indoor air and process air. The filter body may be made of fibrous material, metal or ceramic structures, flexible foams or loose packings. The most common mass production version of depth filters is the bag filter. Another mass production format may be a filter pad, a filter chamber or a filter cartridge.

The following applies in principle: the filter device is usually virtually unmonitored in the dust removal for the filter body present. Service intervals may not be observed and the filter body may be used beyond the load limit or a damaged filter replaced out of specification.

There is therefore a need for a more reliable operation of the filter device.

Disclosure of Invention

The object of the present invention is to provide an improved dust-collecting device which makes reliable operation possible in particular.

This object is achieved with a dusting apparatus according to claim 1 and a method according to the dependent claims. Advantageous developments and embodiments are obtained from the dependent claims and from this description.

A first aspect of the invention relates to a special industrial dust removal device with a system for contactless detection of a plurality of filter bodies in a filter device, in particular in a dust removal device, which dust removal device comprises: one or more filter bodies; a filter device in which the at least one filter body is received; wherein at least one of the filter bodies comprises a signal emitter for emitting electromagnetic waves; a central unit having a signal receiver for receiving the electromagnetic waves transmitted by the signal transmitter; wherein the electromagnetic waves have a frequency of at least 300 MHz.

A further aspect of the invention relates to a method for operating a filter device, in particular a dust removal device, having a system according to the embodiments described herein, the method comprising: providing the at least one filter body of the filter device with a respective at least one signal transmitter; providing a central unit having a signal receiver; transmitting process data of the at least one filter body to a central unit by means of the at least one signal transmitter and signal receiver; wherein the at least one signal transmitter operates at a transmit frequency of at least 300 MHz.

Typical dust-cleaning devices of the invention comprise a system for automatic and contactless identification and localization of the at least one filter body on which a signal emitter is arranged. In this case, the filter device is equipped with at least one central unit with a signal receiver and at least one of the plurality of filter bodies is typically equipped with at least one signal transmitter, respectively. The signal transmitter and the one or more signal receivers are capable of communicating at any time.

The terms "signal transmitter" and "signal receiver" are to be understood here in a broad sense, in particular as: the signal transmitter may also receive at least a control command or an interrogation command, and the signal receiver may also transmit at least a control command or an interrogation command.

For example, for reasons of measurement technology, a plurality of signal transmitters can be provided on at least one or each of the filter bodies in order to transmit different values or values at different locations. In the case of multiple signal emitters on the filter body, these typically have different identification signals.

The filter body typically comprises a frame, for example made of metal or of polyurethane. A typical filter body is designed as a flat filter plate. Further typical filter bodies are, for example, filter cartridges, filter bags, filter hoses, filter cartridges. Typical areas of application of embodiments are, for example, industrial dusting or air cleaning in air conditioning and construction technology.

The respective signal transmitter is typically connected directly and/or inseparably to the respective filter body, for example mounted on a surface or embedded in a component of the filter body. "inseparable" typically means "non-destructively inseparable", wherein "non-destructive" may be for the filter body or for the housing of the signal emitter.

Typical signal emitters include a power source, such as a battery or generator. The further signal transmitter comprises a coil for inductive powering.

The at least one signal transmitter is typically a transponder, in particular an ultra high frequency radio frequency identification (UHF RFID) or an ultra high frequency radio frequency identification (SHF RFID). These transponders have the advantage of a large range of availability and a clear identifiability. Passive technology signal transmitters may be UHF RFID or SHF RFID transponders, or future technology based or otherwise dependent signal transmitter-signal receiver systems.

The signal transmitter is provided in the exemplary embodiment for transmitting process data of the respective filter body. The transmission efficiency of the at least one signal transmitter and of the signal receiver is typically sufficient to allow a continuous and stable transmission of, in particular, process parameters from each of the signal transmitters to the signal receiver arranged outside and/or inside the filter device.

The technologies typically used by signal transmitters are bluetooth, Wireless Local Area Network (WLAN), Radio Frequency Identification (RFID). RFID transponders can be small and can be embedded. The advantages of this technique result from the combination of a small size of the transponder, unobtrusive read-out possibilities and a low price.

The coupling is achieved by means of a magnetic alternating field in a small effective range generated by the reading device or by means of high-frequency radio waves. Thereby not only transferring data but also powering the transponder. To achieve a greater effective range, active transponders with independent power supply are used. Passive technology signal transmitters are electronic components without an independent power source. Electromagnetic wave signal transmitters operate with either active or passive techniques without or with an independent power source.

Typical embodiments have an effective range and/or transmission power which-even during operation of the filter device-makes communication possible at all times in order to continuously transmit process data and manufacturer data.

A typical signal transmitter comprises a data carrier. For example, the serial number of the filter body is typically stored in a data carrier: in a further embodiment the serial number of the filter body is bound to the serial number of the transponder by means of a database, for example stored in the signal receiver. Signal receivers that enable communication with the signal transmitter during operation are typically not installed in the filtering apparatus.

Exemplary embodiments allow positioning the filter body in the filter device and determining process data on the filter to ensure that the filter device is functioning properly. Typical embodiments are for example assays: whether there is a necessary minimum number of filter bodies in the device. Process data such as temperature, pressure drop, clogging can be read contactlessly by the signal receiver and reported to the central plant control system.

By using the higher frequencies of UHF or SHF technology (or higher), the applications can be much broader than with LW (long wave) or KW (short wave).

Typical areas of application of the invention are to interrogate and evaluate parameters of the filter body during operation, to determine the number of filter bodies in the device, to be able to read the life and remaining useful life of the filter bodies and other manufacturer-related data. And, depending on the implementation of the signal transmitter, also process data such as temperature, pressure differential, flow rate, and other process data.

The at least one signal transmitter typically transmits a personalized identification signal to the central unit, wherein the central unit receives the identification signal. The central unit can identify the filter body on which the signal transmitter is arranged by means of the received identification signal on the basis of a look-up table stored in a memory.

The at least one signal transmitter is typically provided for transmitting process data to the central station, in particular the temperature of the respective filter body, the humidity over the respective filter body, the pressure difference over the respective filter body, the chemical material in the respective filter body and/or the flow velocity in the respective filter body, respectively.

Drawings

The invention is explained in detail below with the aid of the drawing, which shows:

FIG. 1 schematically illustrates a perspective view, partially in section, of an embodiment; and

fig. 2 schematically shows a perspective view, partly in section, of a filter body with possible locations for signal emitters of an exemplary embodiment.

Detailed Description

Exemplary embodiments of the invention are described below with reference to the drawings, wherein the invention is not limited to the exemplary embodiments, but rather the scope of the invention is defined by the claims. In the description of the embodiments, the same reference numerals may be used in different drawings and for the same or similar components in different embodiments to make the description clearer. However, this does not mean: the respective components of the invention are limited to the variants shown in the embodiments.

In fig. 1 a schematic perspective view of an embodiment of a dust-collecting device 1 is shown in partial section. The dust-collecting device 1 comprises an inlet duct 3 and an outlet duct 5. The inlet channel 3 opens into an untreated gas chamber 7 from which the gas flows through a filter body 9 with filter material 11 arranged in a corresponding frame. Dust is removed from the air flowing through the filter body 9 from the untreated gas chamber in the filter body 9.

The dedusted air leaves the filter body 9 and flows into the clean gas chamber 13, from where it is supplied to the exhaust duct 5.

Each of the filter bodies 9 is equipped with a signal transmitter 15, which is respectively provided for communication with a signal receiver 17. The signal receiver 17 is an integral part of the central unit 19.

The signal transmitter 15 is firmly connected to a corresponding frame of the filter body 9 and cannot be removed from the frame in a non-destructive manner, for example, the signal transmitter 15 is respectively glued to the frame. This ensures that: the respective signal emitter 15 remains firmly connected to the respective filter body 9.

Further exemplary locations for positioning the signal emitters can be taken from fig. 2, which shows, for example, different positions for positioning the signal emitters on the filter body.

The signal transmitter 15 is in the exemplary embodiment of fig. 1 embodied as a transponder, more precisely as a UHF RFID transponder. In this way, data, such as the temperature of the respective filter body, the humidity at the respective filter body, the pressure difference at the respective filter body, the chemical material in the respective filter body and/or the flow rate in the respective filter body, or data which make identification of the respective filter body possible, can be reliably transmitted to the central unit 19 via the signal receiver 17.

By configuring the signal transmitter 15 as a very high frequency radio frequency identification (VHF RFID) transponder, for example, process data or identification signals can be continuously transmitted. Furthermore, the signal receiver 17 of the central unit 19 can thus be arranged outside the housing 21, in which the filter body 9 is arranged. Further possible arrangements of the central unit 19 with the signal receiver 17 are possible, for example, in the clean gas chamber 13, wherein the use of VHF technology (or U.S. technology or higher frequencies) makes it possible to configure the central unit 19 relatively freely over a large range.

Fig. 2 shows exemplary different positions, at which the signal transmitter 15 can be arranged on the filter body 9 accordingly.

A plurality of signal emitters 15, for example two or three signal emitters 15, can be arranged simultaneously on the filter body 9. For example, the signal transmitter 15 can be expediently arranged directly on a rib-like projection of the filter material 11, for example for measuring the temperature in the filter material 11 and can be transmitted directly to the central unit 19 by means of the signal receiver 17. The other mounting positions are the side, lower or upper parts on the respective frame of the filter body 9.

Claims

1. Dust removal device for air dust removal and/or for air purification, comprising a system for contactless detection of a plurality of filter bodies in a filter device, in particular in a dust removal device (1), the dust removal device comprising:

-one or more filter bodies (9);

-a filtering device in which at least one of said filter bodies (9) is received;

-wherein at least one of the filter bodies (9) comprises a signal transmitter (15) for transmitting electromagnetic waves;

-a central unit (19) having a signal receiver (17) for receiving electromagnetic waves emitted by the signal emitter (15);

-wherein the electromagnetic wave has a frequency of at least 300 MHz.

2. A dust removing device (1) as claimed in claim 1, wherein each of the filter bodies (9) has a signal emitter (15).

3. Dust-extraction device (1) according to any one of the preceding claims, wherein the at least one signal emitter (15) is directly connected with the respective filter body (9).

4. Dust-extraction device (1) according to any one of the preceding claims, wherein the at least one signal emitter (15) comprises a power source.

5. The dusting device (1) according to anyone of the preceding claims, wherein the at least one signal transmitter (15) is a transponder, in particular an ultra high frequency radio frequency identification (UHF RFID) transponder or an ultra high frequency radio frequency identification (SHF RFID) transponder.

6. A dust extraction device (1) according to any one of the preceding claims, wherein the signal transmitter (15) is arranged for transmitting process data of the respective filter body.

7. Dust-extraction device (1) according to any one of the preceding claims, wherein the transmission power of the at least one signal transmitter and of the central unit is sufficient to allow a continuous stable transfer of in particular process parameters from each of the signal transmitters (15) to a signal receiver (17) arranged outside the filter device.

8. Method for operating a filter device, in particular a dust removal device (1) for air dust removal and/or for air purification, having a system according to one of the preceding claims, comprising:

-equipping at least one of said filter bodies (9) of the filtering device with a respective at least one signal emitter (15);

-providing a central unit with a signal receiver;

-transferring process data of at least one of said filter bodies (9) to a central unit by means of said at least one signal transmitter and signal receiver;

-wherein the at least one signal transmitter (15) operates at a transmission frequency of at least 300 MHz.

9. Method according to claim 8, wherein the at least one signal transmitter (15) transmits a personalized identification signal to the central unit and the central unit receives the identification signal by means of a signal receiver.

10. Method according to claim 9, wherein the central unit identifies the filtering unit by means of the received identification signal according to a look-up table stored in a memory.

11. The method according to any one of claims 8 to 10, wherein the at least one signal transmitter (15) transmits process data to a central station, in particular the temperature of the respective filter body (9), the humidity over the respective filter body, the pressure difference over the respective filter body, the chemical material in the respective filter body and/or the flow velocity in the respective filter body, respectively.

12. Filter body suitable for use in a dust removing device (1) according to any one of claims 1 to 7, having a signal transmitter (15) arranged for transmitting electromagnetic waves for communicating data at a frequency of at least 300 MHz.