CN215742403U - Automatic feed bin dust pelletizing system who opens and stop according to feeding condition - Google Patents

Abstract

The utility model relates to the technical field of dust removal equipment, in particular to a bin dust removal system which is automatically started and stopped according to the feeding condition; a differential pressure transmitter and a display controller are additionally arranged in an original dust remover control box, and a circuit is reformed, so that the starting and stopping of a fan and a pulse valve are controlled by the feeding condition, the labor is saved, and the electric energy waste is avoided; the fly ash bin dust collector comprises a fly ash bin dust collector body, wherein the fly ash bin dust collector body comprises a cloth bag for filtering fly ash, an electromagnetic pulse valve for back flushing the cloth bag, a buffer tank for providing compressed air for the electromagnetic pulse valve, a draught fan for exhausting air by exhausting air, pressure guide pipes for leading out the pressure before and after the cloth bag, a pressure difference transmitter and a display controller, a pulse controller for controlling the electromagnetic pulse valve to work regularly and a contactor for controlling the draught fan to start and stop, the pressure guide pipes are divided into two groups, one group of pressure guide pipes is led out from a clean room in the fly ash bin dust collector body, and the other group of pressure guide pipes is led out from a dust room in the fly ash bin dust collector body.

Description

Automatic feed bin dust pelletizing system who opens and stop according to feeding condition

Technical Field

The utility model relates to the technical field of dust removal equipment, in particular to a bin dust removal system capable of being automatically started and stopped according to feeding conditions.

Background

The fly ash bin is a storage device commonly used in the incineration treatment industry of solid dangerous goods. A bag-type dust collector is arranged in a tail gas treatment system of an incineration plant to intercept fly ash particles after incineration tail gas is treated by a dry method, and the fly ash needs to be solidified and then buried. The fly ash of the incineration dust collector falls into an ash bucket, and a fly ash conveying system is arranged below the ash bucket and used for conveying the fly ash to a fly ash bin positioned in a curing workshop. The working process of the fly ash conveying system is as follows: opening a feeding valve, and dropping the fly ash into a conveying bin from an ash bucket; closing the feeding valve, opening the pressurizing valve, and blowing compressed air from the bottom until the pressure in the bin reaches 0.6 MPa; and opening a delivery valve, and blowing the fly ash to a solidified fly ash bin along a delivery pipeline along with compressed air. The incineration ash conveying is intermittent operation, and the ash conveying is carried out by a central control ash conveying system. The distance between the incineration conveying bin and the solidified fly ash bin is far away, so that the solidified fly ash bin cannot be subjected to pressure building, otherwise, the situation that the material flow velocity is too low and the material is blocked can occur. Therefore, a dedusting induced draft fan and a pulse electromagnetic valve of the fly ash bin must be started before conveying. At present, central control personnel inform field operators before ash conveying, the field operators move from an incineration workshop to a curing workshop, and a fan and a pulse valve of a curing ash flying bin are manually started and then leave. Then the ash is conveyed again through the central control. After the ash conveying is finished, the central control informs field personnel to turn off the fan again so as to achieve the purpose of saving electricity. This increases the labor cost for the reciprocating wind-stop machine. If the wind is always on, the waste of electric energy is caused. Since there is no cable bridge between the two workshops, the solution of remotely controlling the dust collector by means of a control cable is also not feasible.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the bin dust removal system which is additionally provided with the differential pressure transmitter and the display controller in the original dust remover control box, enables the start and stop of the fan and the pulse valve to be controlled by the feeding condition by modifying the circuit, saves the labor and avoids the waste of electric energy.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the fly ash bin dust collector comprises a fly ash bin dust collector body, wherein the fly ash bin dust collector body comprises a cloth bag for filtering fly ash, an electromagnetic pulse valve for back flushing the cloth bag, a buffer tank for providing compressed air for the electromagnetic pulse valve, a draught fan for exhausting air and exhausting air, pressure guide pipes for leading out the pressure before and after the cloth bag, a pressure difference transmitter, a display controller, a pulse controller for controlling the timing work of the electromagnetic pulse valve and a contactor for controlling the start and stop of the draught fan, wherein the two groups of pressure guide pipes are arranged, one group of pressure guide pipes are led out from a clean room in the fly ash bin dust collector body, the other group of pressure guide pipes are led out from a dust room in the fly ash bin dust collector body, the two groups of pressure guide pipes are laid along the wall of the fly ash bin dust collector body, and the two groups of pressure guide pipes are connected with the pressure difference transmitter.

Preferably, the pressure guiding pipe is connected with the + side of the pressure difference transmitter in a leading-out mode from the dust chamber, and is connected with the-side of the pressure difference transmitter in a leading-out mode from the cleaning chamber, and the pressure difference transmitter is electrically connected with the display controller.

Preferably, the system also comprises two groups of relays, the display control instrument is electrically connected with the two groups of relays, and the display control instrument is electrically connected with the induced draft fan; the display control appearance can show the pressure differential value of pressure differential transmitter to can set up two alarm points of upper limit warning and lower limit warning, drive two relay actions that correspond simultaneously, the upper limit warning output point of display control appearance is received and is gone in the return circuit that starts the draught fan, and the lower limit warning output point is received and is gone in the return circuit that stops the draught fan. The control of the induced draft fan is realized by controlling a contactor on the induced draft fan; and simultaneously, the work of the pulse control instrument is controlled through the auxiliary contact of the contactor.

Preferably, the number of the electromagnetic pulse valves is 4, and the pulse controller is electrically connected with the 4 electromagnetic pulse valves respectively.

(III) advantageous effects

Compared with the prior art, the utility model provides the bin dust removal system capable of being automatically started and stopped according to the feeding condition, and the bin dust removal system has the following beneficial effects: according to the bin dust removal system capable of being automatically started and stopped according to the feeding condition, pressure guide pipes are additionally arranged at the front and the back of a cloth bag, pressure at two positions is guided to a pressure difference transmitter in a control box, the pressure difference transmitter transmits a pressure difference signal to a display controller, when dust is conveyed, an induced draft fan stops, the pressure of a dust chamber is increased, when the pressure is increased to an upper limit set value, the dust is judged to be conveyed, an upper limit relay acts, a control contactor enables the induced draft fan to start, a contactor contact is closed to control a pulse controller to work, the pressure difference becomes larger after the induced draft fan starts, the pressure difference can be temporarily reduced when an electromagnetic pulse valve blows, and low pressure difference fluctuation is shielded by setting input signal damping; when the dust conveying is stopped, the pressure of the dust chamber is close to the atmospheric pressure, and when the differential pressure is reduced to a set value, the dust conveying is judged to be finished, the lower limit relay acts, and the contactor is controlled to stop the induced draft fan; simultaneously stopping the pulse control instrument; through automatic start-stop, the manpower and the electric power energy have been saved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a control schematic block diagram of the present invention;

FIG. 3 is an electrical schematic of the present invention;

in the drawings, the reference numbers: reference numbers in fig. 1: 1. a fly ash bin dust collector body; 2. a cloth bag; 3. an electromagnetic pulse valve; 4. a buffer tank; 5. an induced draft fan; 6. a pressure guide pipe; 7. a differential pressure transmitter; 8. a display controller; 9. a pulse control instrument; 10. a contactor;

reference numerals in fig. 3: SB 1: a manual start button; SB 2: a manual stop button; y1, display control instrument; p: a differential pressure transmitter; KA1 and KA2 are display control instrument contacts; KM 1: a fan contactor; y2 pulse control instrument.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the bin dust removing system capable of automatically starting and stopping according to the feeding condition of the utility model comprises a fly ash bin dust remover body 1, wherein the fly ash bin dust remover body 1 comprises a cloth bag 2 for filtering fly ash, an electromagnetic pulse valve 3 for back flushing the cloth bag 2, a buffer tank 4 for providing compressed air for the electromagnetic pulse valve 3, a draught fan 5 for exhausting air and discharging air, pressure guide pipes 6 for guiding the pressure before the cloth bag 2 and after the cloth bag 2, a pressure difference transmitter 7 and a display controller 8, a pulse controller 9 for controlling the electromagnetic pulse valve 3 to work at regular time and a contactor 10 for controlling the draught fan 5 to start and stop, the pressure guide pipes 6 are two groups, one group of pressure guide pipes 6 is led out from a clean room in the fly ash bin dust remover body 1, the other group of pressure guide pipes is led out from a dust room in the fly ash bin dust remover body 1, two pressure guide pipes 6 are laid along the wall of the fly ash bin dust remover body 1, and the two groups of pressure guide pipes 6 are connected with a pressure difference transmitter 7; pressure guide pipes 6 are additionally arranged at the front and the rear of the cloth bag 2, pressure at two positions is guided to a pressure difference transmitter 7 in a control box, the pressure difference transmitter 7 transmits a pressure difference signal to a display controller 8, when ash is conveyed, an induced draft fan 5 stops, the pressure of a dust chamber increases, when the pressure increases to an upper limit set value, the ash is judged to be conveyed, an upper limit relay acts, a control contactor 10 enables the induced draft fan 5 to start, a contact of the contactor 10 is closed to control a pulse controller 9 to work, the pressure difference becomes larger after the induced draft fan 5 starts, the pressure difference can be reduced temporarily when the electromagnetic pulse valve 3 blows, and low pressure difference fluctuation is shielded by setting input signal damping; when the dust conveying is stopped, the pressure of the dust chamber is close to the atmospheric pressure, and when the differential pressure is reduced to a set value, the dust conveying is judged to be finished, the lower limit relay acts, and the contactor 10 is controlled to stop the induced draft fan 5; simultaneously, the pulse controller 9 stops working; through automatic start-stop, the manpower and the electric power energy have been saved.

According to the bin dust removal system capable of being automatically started and stopped according to the feeding condition, the pressure guide pipe 6 is led out from the dust chamber and is connected with the side 7 '+' of the pressure difference transmitter, the pressure guide pipe is led out from the clean chamber and is connected with the side-minus of the pressure difference transmitter 7, and the pressure difference transmitter 7 is electrically connected with the display controller 8.

The bin dust removal system capable of being automatically started and stopped according to the feeding condition further comprises two groups of relays, wherein the display controller 8 is electrically connected with the two groups of relays, and the display controller 8 is electrically connected with the induced draft fan 5; the display controller 8 can display the differential pressure value of the differential pressure transmitter 7, can set an upper limit alarm point and a lower limit alarm point, and simultaneously drives the two corresponding relays to act, the upper limit alarm output point of the display controller 8 is connected to a loop for starting the induced draft fan 5, and the lower limit alarm output point is connected to a loop for stopping the induced draft fan 5. The control of the draught fan 5 is realized by controlling a contactor 10 on the draught fan 5; and the pulse controller 9 is controlled to work through the auxiliary contact of the contactor 10.

According to the bin dust removal system capable of being automatically started and stopped according to the feeding condition, the number of the electromagnetic pulse valves 3 is 4, and the pulse controller 9 is electrically connected with the 4 electromagnetic pulse valves 3 respectively; the electromagnetic pulse valve 3 is controlled to work intermittently in a circulating mode by setting pulse duration and pulse interval time. When the electromagnetic pulse valve 3 is electrified, compressed air is blown to the cloth bag 2 from the compressed air buffer tank 4, so that the cloth bag 2 shakes to achieve the purpose of cleaning ash.

When ash is conveyed, the induced draft fan 5 is in a stop state, the pressure P1 of the dust chamber is increased along with feeding, the pressure P2 of the clean chamber is equal to the atmospheric pressure, the pressure delta P is P1-P2, the pressure difference delta P is gradually increased at the moment, when the pressure is increased to an upper limit set value, the display controller 8 judges that ash is conveyed, the upper limit relay KA1 acts, the KA1 normally open contact is closed, the contactor KM1 is controlled to suck, and the induced draft fan 5 is started. The contactor KM1 controls the pulse controller Y2 to work by closing a normally open contact. After the induced draft fan 5 is started, P2 becomes negative pressure, and the pressure difference Δ P becomes larger. When the electromagnetic pulse valve 3 blows, P2 increases instantly, the pressure difference delta P can decrease temporarily, and low pressure difference fluctuation is shielded by setting input signal damping in the display controller 8. When the dust conveying is stopped, the dust chamber pressure P1 is close to the atmospheric pressure, and the differential pressure delta P is reduced to a set value, Y1 judges that the dust conveying is finished, the lower limit relay KA2 operates, the KA2 normally-closed contact is disconnected, the control contactor KM1 is disconnected, and the induced draft fan 5 is stopped. The KM1 normally open contact is opened to stop the pulse controller Y2. And continuously repeating the steps when ash is conveyed next time. Therefore, the dust removal system can be automatically started and stopped according to the feeding condition without manual participation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The bin dust removal system capable of being automatically started and stopped according to the feeding condition is characterized by comprising a fly ash bin dust remover body (1), wherein the fly ash bin dust remover body (1) comprises a cloth bag (2) for filtering fly ash, an electromagnetic pulse valve (3) for back flushing the cloth bag (2), a buffer tank (4) for providing compressed air for the electromagnetic pulse valve (3), an induced draft fan (5) for exhausting air, pressure guide pipes (6) for guiding the pressure before the cloth bag (2) and after the cloth bag (2), a pressure difference transmitter (7), a display controller (8), a pulse controller (9) for controlling the timing work of the electromagnetic pulse valve (3) and a contactor (10) for controlling the start and stop of the induced draft fan (5), the pressure guide pipes (6) are divided into two groups, one group of the pressure guide pipes (6) is guided out from a clean room in the fly ash bin dust remover body (1), the other group is guided out from a dust room in the fly ash bin dust remover body (1), two pressure pipes (6) are laid along the wall of the fly ash bin dust remover body (1), and two groups of pressure pipes (6) are connected with a pressure difference transmitter (7).

2. The automatic start-stop bin dedusting system according to the feeding condition of claim 1, characterized in that the pressure guiding pipe (6) is led out from a dust chamber and connected with a + side of the pressure difference transmitter (7), and is led out from a clean chamber and connected with a-side of the pressure difference transmitter (7), and the pressure difference transmitter (7) is electrically connected with the display controller (8).

3. The automatic feed bin dust removal system starting and stopping according to the feeding condition of claim 2, further comprising two sets of relays, wherein the display controller (8) is electrically connected with the two sets of relays, and the display controller (8) is electrically connected with the induced draft fan (5).

4. The bin dedusting system capable of being automatically started and stopped according to the feeding condition as claimed in claim 3, wherein the number of the electromagnetic pulse valves (3) is 4, and the pulse controller (9) is electrically connected with 4 electromagnetic pulse valves (3) respectively.

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