Automatic fault diagnosis type upper box body of bag type dust collector

Abstract

The utility model discloses an automatic fault diagnosis type upper box body of a bag type dust collector. Comprising an upper box body shell (1), pulse valves (3), an air bag (4) and blowing pipes (5), the blowing pipes (5) are arranged side by side in the upper box body shell (1), and each blowing pipe (5) is correspondingly provided with one pulse valve (3); a vibration connecting rod (6) is arranged on the blowing pipe (5); the vibration connecting rod (6) is connected with a vibration detection device; the vibration detection device is connected with a control system; an infrared light grating emitter (7) is installed on a side wall plate in the upper box body shell (1), and an infrared light grating receiver (8) is installed at the position, opposite to the infrared light grating emitter (7), in the upper box body shell (1). According to the utility model, a fault pulse valve number and a broken bag number can be accurately positioned, so that personnel can conveniently, timely and efficiently carry out overhaul and maintenance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of bag type dust collector, specifically relates to a fault automatic diagnosis type bag type dust collector upper box. BACKGROUND

[0002] The upper box in the bag dust collector is the core component of the whole equipment, and the main accessories including the pulse valve, the disc lift valve, the blowing pipe and the installation and maintenance of the filter bag cage are all needed to be carried out in the upper box.

[0003] Because the pulse valve and the filter bag number of the upper box of the dust collector are usually configured to be relatively large, when a small amount of pulse valve fails to work, the operating room staff is difficult to detect.

[0004] In addition, in the process that the bag type dust collector is debugged and normally runs, in the initial stage that the filter bag is damaged, the damaged area is very small, and the leaked dust is mixed into the air volume of the whole dust collector after partial damage and is diluted, and it is difficult to be detected by the dust detection instrument; after the dust detection instrument detects that there is dust leakage, it is difficult to determine the specific damaged filter bag.

[0005] The current pressure difference measurement of the bin or the dust leakage detection instrument added in the bin can only locate the damaged bin of the filter bag, and the number of filter bags in a bin in a large dust collector can reach up to hundreds, so the workload of finding the damaged filter bag is large. SUMMARY

[0006] The utility model provides a fault automatic diagnosis type bag type dust collector upper box in view of the prior art's insufficient.

[0007] The technical solution of the utility model is: a fault automatic diagnosis type bag type dust collector upper box, including upper box shell, pulse valve, gas pocket, blowing pipe, the pulse valve is connected gas pocket, and the filter bag is equipped in the upper box shell, and the gas pocket is installed on the upper box shell, the blowing pipe is arranged side by side in the upper box shell, and each blowing pipe is correspondingly provided with pulse valve;Vibration connecting rod is arranged on the blowing pipe;The vibration connecting rod is connected with vibration detection device, and the vibration detection device is connected with control system;Infrared light grating transmitter is installed on the inner side wall plate of the upper box shell, and infrared light grating receiver is installed on the inner side wall plate of the upper box shell and opposite to the infrared light grating transmitter.

[0008] Further, the disc lift valve is installed on the upper box shell, and the disc lift valve is connected with the control system.

[0009] Further, the vibration connecting rod is connected with each blowing pipe through the U-shaped buckle.

[0010] Further, the infrared light grid transmitter emits parallel infrared light columns, each infrared light column is consistent with the center line of the filter bag in the same row, and the infrared light column is 10-100 mm higher than the filter bag opening.

[0011] Further, the infrared light grid receiver is used for receiving the emitted light beams of the infrared light grid transmitter and transmitting the light intensity signals of the light columns to the control system.

[0012] The vibration connecting rod connects all the blowing pipes, and when any one pulse valve blows, the blowing pipe causes vibration, and the vibration value is transmitted to the control system through the vibration detection device on the vibration connecting rod.

[0013] The control system controls the pulse valves on the gas pocket to blow in turn according to the set interval time.

[0014] The vibration amplitude signal transmitted to the control system by the vibration connecting rod is compared with the threshold value of the vibration amplitude set in the control system during the blowing time of the pulse valve.

[0015] When the vibration amplitude value compared out exceeds the threshold value when the pulse valve gives the working signal, the number of the pulse valve is output, and the pulse valve is prompted for maintenance.

[0016] The infrared light grid transmitter can emit a plurality of parallel infrared lights, the number of the infrared light beams is consistent with the number of the filter bags blown by each pulse valve, the infrared light grid transmitter emits pulse infrared light, and the pulse infrared light length and the pulse interval are consistent with the blowing parameters of the pulse valve.

[0017] When the pulse valves work in turn according to the control system, the infrared light grid transmitter emits infrared light to sweep the upper surface of the filter bag opening; when there is a broken bag, the infrared light intensity corresponding to the number received by the infrared light grid receiver is less than the set threshold value, the control system outputs the number of the working pulse valve and the number of the filter bag row corresponding to the infrared light, and the system prompts to replace the broken bag.

[0018] When there is a broken bag prompt, the disc rotary valve can be closed and the corresponding upper box body can be cut off on the centralized control system according to the maintenance needs, and the bad bag can be checked.

[0019] The beneficial technical effects of the utility model are: (1) the vibration amplitude signal returned by the vibration connecting rod and the vibration detection device can accurately master the pulse valve fault in real time, maintenance can be carried out in time, and filter bags are prevented from hanging dust; (2) when the infrared light emitted by the infrared light grid transmitter passes through the upper part of the filter bag opening, the dust overflowed by the damaged filter bag opening absorbs or scatters part of the light, and the infrared light grid receiver can identify the filter bag row number whose light is weakened; (3) the configuration of the upper box body can accurately locate the fault pulse valve number and the broken bag number, and personnel can conveniently and efficiently carry out maintenance. Attached Figure Description

[0020] Figure 1 This is a top view of the upper housing of a bag filter with automatic fault diagnosis.

[0021] Figure 2 This is a diagram of the infrared light grid layout.

[0022] In the diagram: 1. Upper housing shell; 2. Disc lifting valve; 3. Pulse valve; 4. Air manifold; 5. Blowpipe; 6. Vibration linkage; 7. Infrared light grid transmitter; 8. Infrared light grid receiver. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] An automatic fault diagnosis type bag filter upper housing includes an upper housing shell 1, a pulse valve 3, an air manifold 4, and blowpipes 5. The pulse valve 3 is connected to the air manifold 4. Filter bags are installed inside the upper housing shell 1. The blowpipes 5 are arranged side by side inside the upper housing shell 1, and each blowpipe 5 is equipped with a corresponding pulse valve 3. Vibration connecting rods 6 are installed on the blowpipes 5. The vibration connecting rods 6 are connected to a vibration detection device, and the vibration detection device is connected to a control system. An infrared light grid transmitter 7 is installed on one side wall panel inside the upper housing shell 1, and an infrared light grid receiver 8 is installed inside the upper housing shell 1 at a position opposite to the infrared light grid transmitter 7.

[0025] Example 1: An air tank 4 is installed on the outer shell 1 of the upper housing; in this example, 11 pulse valves 3 are installed on the air tank 4, and each pulse valve 3 has its own independent number, which is identified from F1 to F11.

[0026] The air tank 4 has an air inlet, and external air (compressed air or nitrogen) is stored in the air tank 4 to provide an air source for the pulse valve 3.

[0027] A disc lifting valve 2 is installed on the upper housing shell 1. The opening and closing of the disc lifting valve 2 can be controlled by the signal sent by the control system. When the filter bag of the upper housing is damaged and needs to be repaired and replaced, the disc lifting valve 2 of the corresponding upper housing can be closed by the control system, so that the upper housing is cut off from the entire dust collector.

[0028] Eleven blowpipes 5 are arranged side by side inside the upper housing shell 1. Each blowpipe 5 corresponds to a pulse valve 3 from F1 to F11 to blow the filter bag.

[0029] In the present embodiment, the number of filter bags sprayed by each pulse valve 3 is 15, and the filter bags are numbered as D1 to D15 from the proximal end of the pulse valve 3 to the distal end of the pulse valve 3.

[0030] The vibration connecting rod 6 is connected with all the spray pipes 3 through a U-shaped buckle or any other connection mode, and transmits the vibration of the spray pipe 3 caused by the back thrust when the compressed air is sprayed through a flexible elastic sheet; the vibration detector on the vibration connecting rod 6 transmits the vibration amplitude signal to the control system.

[0031] The pulse time and the pulse spraying interval time of the pulse valve 3 are set in the control system before the pulse valve 3 works.

[0032] Preferably, the pulse time can be set to 100-200 ms, and more preferably, the pulse time can be set to 150 ms; preferably, the pulse spraying interval time can be set to 10-20 s, and more preferably, the pulse interval time can be set to 15 s.

[0033] The amplitude waveform diagram transmitted by the vibration connecting rod 6 to the control system presents a peak value when the pulse valve 3 sprays.

[0034] According to the spraying setting, the peak value of the amplitude measurement is compared with the amplitude threshold value set in the control system during the spraying time, and if the amplitude measurement peak value is less than the amplitude threshold value, the control system outputs the number of the suspected faulty pulse valve 3, prompting the staff to check the corresponding pulse valve.

[0035] Embodiment 2: Repeat embodiment 1, and install an infrared light grid emitter 7 inside the upper box shell 1. The infrared light grid emitter 7 can emit 15 parallel infrared light columns; preferably, the infrared light energy can be emitted within 10 m indoors.

[0036] Each infrared light column is consistent with the center line of the filter bag in the same row, and the infrared light column is higher than the filter bag opening by 10-100 mm; preferably, the center of the infrared light column is 50 mm higher than the upper surface of the filter bag.

[0037] On the opposite side of the infrared light grid emitter 7, an infrared light grid receiver 8 is installed inside the upper box shell 1; the infrared light grid receiver 8 has 15 receiving points, can receive the 15 light columns emitted from the infrared light grid emitter 7, and can transmit the light intensity signals of the 15 light columns to the control system.

[0038] The infrared light grid positioning bag breaking is to use a small amount of dust overflowing from the broken bag opening, which is not diluted by more air volume, to absorb or scatter the corresponding infrared light column in the same row at the bag opening, so that the light signal received by the corresponding receiving contact point on the infrared light grid receiver 8 is weakened.

[0039] The infrared grating emitter 7 emits pulsed infrared light, and the pulse time and pulse interval of the pulsed light are synchronized with the working parameters of the pulse valve 3; when one of the pulse valves 3 sprays, pulsed infrared light is emitted, and after the light signal is transmitted to the control system, the light signal threshold value set in the control system in advance is compared; if the light signal measurement value is less than the light signal threshold value, the working pulse valve number and the corresponding infrared light column number are returned.

[0040] According to the embodiments 1 and 2, the control system controls the F1~F11 pulse valves to spray in sequence, when spraying to the F3 pulse valve, the vibration measurement signal is less than the vibration threshold value, the pulse valve F3 number is output, and the staff is prompted that the pulse valve is faulty; when spraying to the F8 pulse valve, the light signal measurement value of the infrared light column D12 number is less than the light signal threshold value, the filter bag number F8D12 is output, and the staff is prompted that the bag is possibly damaged.

[0041] When the control system prompts the bag damage, the staff can remotely operate to close the disc lift valve 2 of the corresponding upper box body, and cut off the upper box body from the whole dust collector; the local bag damage can be quickly positioned and quickly checked and replaced without affecting the normal work of the bag type dust collector.

[0042] The parameters or sizes of the various components described in the above embodiments cannot be the limiting conditions of the utility model. The parameters in the embodiment description can be adjusted on this basis, but are all within the protection scope of the utility model.

Claims

1. A bag type dust collector upper box with automatic fault diagnosis, comprising an upper box shell (1), a pulse valve (3), an air pocket (4) and a blowing pipe (5), the pulse valve (3) is connected with the air pocket (4), the upper box shell (1) is provided with filter bags, and the air pocket (4) is installed on the upper box shell (1), characterized in that The blowing pipe (5) is arranged side by side in the upper box shell (1), each blowing pipe (5) is provided with a pulse valve (3) correspondingly; a vibration connecting rod (6) is arranged on the blowing pipe (5); the vibration connecting rod (6) is connected with a vibration detection device, and the vibration detection device is connected with a control system; an infrared light grid emitter (7) is installed on one side wall plate in the upper box shell (1), and an infrared light grid receiver (8) is installed at a position opposite to the infrared light grid emitter (7) in the upper box shell (1).

2. The upper box of a bag-type dust collector according to claim 1, wherein The upper box shell (1) is provided with a disc lifting valve (2), and the disc lifting valve (2) is connected with the control system.

3. The upper box of a bag-type dust collector according to claim 1, wherein The pulse valve (3) is connected with the control system, and the number of each pulse valve (3) is arranged in the control system.

4. The upper box of a bag-type dust collector according to claim 1, wherein The vibration connecting rod (6) is connected with each blowing pipe (5) through a U-shaped buckle.

5. The baghouse upper housing of claim 1, wherein The infrared light grid emitter (7) emits parallel infrared light columns, each infrared light column is consistent with the center line of the filter bag in the same row, and the infrared light column is 10-100 mm higher than the filter bag opening.

6. The baghouse upper housing of claim 1, wherein The infrared light grid receiver (8) is used for receiving the emitted light beams of the infrared light grid emitter (7) and transmitting the light intensity signals of the light columns to the control system.

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