阅读说明：本技术 反吹管路积料监控装置及压滤机进料通道反吹清料机构 (Material accumulation monitoring device for back-blowing pipeline and back-blowing material cleaning mechanism for feed channel of filter press ) 是由 石连友 耿震 田国军 郝兵 梁金龙 于 2021-10-19 设计创作，主要内容包括：本发明公开了一种反吹管路积料监控装置及压滤机进料通道反吹清料机构,创新方案的要点是：在反吹管道上增设该监控装置,包括四通法兰管接头、光电监测仪(对射光电开关)、透视玻璃、透视玻璃盖、玻璃密封圈,能及时检测到因阀芯泄漏性损坏而串入反吹管路的料浆、并向PLC系统传递反吹管路阀门故障信号,PLC系统同步关闭反吹管路备用阀门,避免更多的腐蚀性料浆串入多用途储气罐；增加了反吹管路故障自动监测与控制能力。进料通道反吹清料机构,使用该监控装置,解决了反吹阀门一旦阀芯泄漏性损坏很难及时发现,加压过滤时腐蚀性料浆通过损坏的反吹阀门串入反吹管路和多用途储气罐,造成储气罐及其相关设备元件被腐蚀的技术问题；产品改型升级。(The invention discloses a back-flushing pipeline material accumulation monitoring device and a back-flushing material cleaning mechanism of a filter press feeding channel, and the key points of the innovative scheme are as follows: the monitoring device is additionally arranged on the back-blowing pipeline and comprises a four-way flange pipe joint, a photoelectric monitor (a correlation photoelectric switch), perspective glass, a perspective glass cover and a glass sealing ring, slurry which is in series into the back-blowing pipeline due to leakage damage of a valve core can be detected in time, a back-blowing pipeline valve fault signal is transmitted to a PLC system, the PLC system synchronously closes a back-blowing pipeline standby valve, and more corrosive slurry is prevented from being in series into a multipurpose gas storage tank; the automatic monitoring and controlling capability of the back flushing pipeline fault is increased. The feeding channel back-blowing material cleaning mechanism solves the technical problem that once a valve core of a back-blowing valve is damaged in a leakage manner, the valve core is difficult to find in time, and corrosive slurry is in series connection into a back-blowing pipeline and a multipurpose gas storage tank through the damaged back-blowing valve during pressure filtration, so that the gas storage tank and related equipment elements are corroded; and (5) modifying and upgrading the product.)

1. A back-flushing pipeline material accumulation monitoring device comprises a four-way flange pipe joint, a photoelectric monitor, a monitor bracket, perspective glass, a perspective glass cover and a glass sealing ring; the method is characterized in that: the four-way flange pipe joint comprises a cross four-way pipe, a double-pipe joint flange and a double-perspective flange, wherein the cross four-way pipe comprises a back-blowing pipe and a perspective pipe, and the perspective flange is provided with a glass sealing groove; the photoelectric monitor is a T18-6MX correlation type photoelectric switch and comprises a transmitter and a receiver; the monitor support is a convex support, a waist-shaped support adjusting hole is formed in the middle of the convex support, mounting holes are formed in two ends of the convex support, and the pitch of the double mounting holes is equal to that of the perspective glass cover; the perspective glass is a circular perspective glass with the thickness of 20mm, and the diameter of the perspective glass is larger than that of the glass sealing groove; the perspective glass cover is a circular cover matched with the perspective flange and is provided with a glass sealing groove and a central perspective hole; the interconnection relationship is: the double-pipe joint flanges are respectively welded at two ends of a back-blowing pipe of the cross four-way pipe, and the double perspective flanges are respectively welded at two ends of a perspective pipe of the cross four-way pipe to form a four-way flange pipe joint; the glass sealing ring is arranged in the glass sealing groove, the perspective glass is clamped by the bolt assembly and the perspective glass cover and is arranged on the perspective flange, the monitor bracket is arranged on the perspective glass cover, and the emitter and the receiver of the photoelectric monitor are respectively arranged on the double monitor brackets to form a back-blowing pipeline monitoring device; the back-blowing pipeline monitoring device is arranged on a back-blowing pipeline of the back-blowing material cleaning mechanism, is positioned on the left side of a back-blowing pipeline valve, namely is positioned between the back-blowing pipeline valve and the multipurpose gas storage tank, and is connected with a PLC program control system; the slurry which is in series connection with the back-flushing pipeline due to leakage damage of the valve core can be detected, and a back-flushing pipeline valve fault signal is transmitted to the PLC program control system.

2. A filter press feed channel back-blowing material cleaning mechanism comprises an air compressor, a multi-purpose air storage tank, a back-blowing pipeline and a back-blowing pipeline monitoring device; the back-blowing pipeline comprises a back-blowing pipeline and a double back-blowing pipeline valve; the method is characterized in that: the back flushing pipeline monitoring device is the back flushing pipeline material accumulation monitoring device in claim 1; the material feeding channel back-blowing and cleaning mechanism has the function of back-blowing residual materials staying in the material feeding channel and materials deposited in the feeding hole of the filter chamber in the pressure maintaining process to the material stirring position.

Technical Field

The invention belongs to the technical field of automatic membrane filter presses (patent classification number B01D 25/12), and relates to a pipeline accumulated material photoelectric monitoring device of a feed channel back-blowing material cleaning mechanism.

Background

The filter press is a pressurized filtering device with multiple filtering chambers operated intermittently; the membrane filter press is a filter press which is formed by alternately arranging a plurality of membrane filter plates, filter cloth and box filter plates to form a filter chamber, and is used for performing primary low-pressure static filtration and secondary high-pressure swelling membrane squeezing filter cake dehydration; an automatic diaphragm filter press is a diaphragm filter press which is integrated mechanically, electrically and hydraulically and intelligently controlled by a PLC (programmable logic controller); the filter press mainly comprises a double-beam frame, a filter plate pressing mechanism, a squeezing and filtering mechanism, a plate pulling and cake unloading mechanism, a filter cloth cleaning mechanism, a plate turning and liquid receiving mechanism, a back-blowing and material cleaning mechanism and a PLC (programmable logic controller) system; through PLC control, single operation cycle, namely filter plate compaction, low-pressure feeding, pressure maintaining filtration, washing purification, squeezing dehydration (including pressure maintaining), material back blowing, blow-drying purification, plate pulling and cake discharging, and filter cloth cleaning, is automatically completed by one key; is suitable for solid-liquid separation of various suspension materials (namely a mixture of liquid and solid particles).

The back-blowing material cleaning mechanism mainly comprises an air compressor, a multipurpose air storage tank and a back-blowing pipeline; the back-blowing pipeline comprises a back-blowing pipeline and a back-blowing valve; the blowback pipeline is from tail-end connection squeezing filter mechanism's blowback inlet port, and high-pressure gas blows back the material stirring department with the opposite direction of feeding with the residual material that stops in feedstock channel (including the material of pressurize process deposit in the filter house feed port), avoids remaining ground paste to influence the purity of filter cake to it is unobstructed to dredge the convenient next time feeding of filter house feed port.

The existing back-blowing material cleaning mechanism has the following defects: a back-flushing valve damage and back-flushing pipeline material accumulation monitoring device is lacked; the back-flushing valve belongs to a quick-wear part, once the leakage damage of the valve core is difficult to find in time, the corrosive slurry is connected in series into a back-flushing pipeline and a multi-purpose gas storage tank through the damaged back-flushing valve in the low-pressure feeding or high-pressure squeezing process, so that the gas storage tank is corroded; when the multipurpose gas storage tank is used, corrosive slurry in the gas storage tank can enter other equipment along with compressed air, so that elements of dyed equipment are corroded, the service life of the dyed equipment is influenced, and hidden dangers of environmental pollution exist; monitoring of leakage damage of a valve core of a blowback valve is a technical problem which is desired to be solved but is not successful all the time.

Disclosure of Invention

The invention aims to overcome the defects of a reverse-blowing material cleaning mechanism of a feeding channel of the existing filter press, solve the technical problems that the reverse-blowing material cleaning mechanism lacks a reverse-blowing valve to damage a leaked slurry monitoring device, once the leakage damage of a valve core is difficult to find in time, corrosive slurry is connected into a reverse-blowing pipeline and a multipurpose gas storage tank through the damaged reverse-blowing valve during pressure filtration to cause the corrosion of the gas storage tank and related equipment elements, and provide a reverse-blowing pipeline material accumulation monitoring device and a reverse-blowing material cleaning mechanism of the feeding channel of the filter press; the invention relates to a filter press feed channel back-blowing material cleaning mechanism, in particular to a filter press feed channel back-blowing material cleaning mechanism with a back-blowing pipeline material accumulation monitoring device, which is called for short because the number of characters of the patent name is limited.

The invention solves the problems of the prior art and adopts the brand new technical scheme that: a blowback pipeline material accumulation monitoring device (hereinafter referred to as blowback pipeline monitoring device) has the key points of the overall technical scheme that compared with the prior art, the novel overall structure has the prominent substantive characteristics that: on the basis of the back-blowing material-cleaning mechanism of the feeding channel of the existing filter press, a back-blowing pipeline material-accumulating monitoring device is additionally arranged, and comprises a four-way flange pipe joint, a photoelectric monitor (a counter photoelectric switch), a monitor bracket, perspective glass, a perspective glass cover and a glass sealing ring, and the monitor bracket, the perspective glass cover and the glass sealing ring are integrally arranged on a back-blowing pipeline on the left side of a back-blowing pipeline valve (positioned between the back-blowing pipeline valve and a multipurpose gas storage tank); when the valve core of the back-flushing pipeline valve is damaged in a leakage manner and corrosive slurry is in series connection with the back-flushing pipeline and the multipurpose gas storage tank through the damaged back-flushing pipeline valve, the photoelectric monitor of the back-flushing pipeline monitoring device can timely detect the slurry in series connection with the back-flushing pipeline due to the damage in the leakage manner of the valve core and transmit a back-flushing pipeline valve damage signal to the PLC program control system, the PLC program control system synchronously controls the air compressor to stop and close the back-flushing pipeline standby valve and alarms that the back-flushing pipeline valve is damaged, so that more corrosive slurry is prevented from being in series connection with the multipurpose gas storage tank; therefore, the technical problems that the blowback material cleaning mechanism is lack of a blowback valve to damage a leakage slurry monitoring device, once the leakage damage of the valve core is difficult to find in time, the corrosive slurry is connected into a blowback pipeline and a multipurpose gas storage tank in series through the damaged blowback valve during pressure filtration, and the gas storage tank and related equipment elements are corroded are solved.

The specific design scheme is as follows: (1) the four-way flange pipe joint comprises a cross four-way pipe, a double-pipe joint flange and a double perspective flange; the cross four-way pipe comprises a back-blowing pipe and a perspective pipe; the perspective flange is provided with a glass sealing groove; (2) the photoelectric monitor is a T18-6MX correlation type photoelectric switch and comprises a transmitter and a receiver; (3) the monitor support is a convex support, a waist-shaped support adjusting hole is formed in the middle of the convex support, mounting holes are formed in two ends of the convex support, and the pitch of the double mounting holes is equal to that of the perspective glass cover; (4) the perspective glass is a circular perspective glass with the thickness of 20mm, and the diameter of the perspective glass is larger than that of the glass sealing groove; (5) the perspective glass cover is a circular cover matched with the perspective flange and is provided with a glass sealing groove and a central perspective hole.

The connection relation of the main parts is as follows: (1) assembling and welding the four-way flange pipe joint: the double-pipe joint flanges are respectively welded at two ends of a back-blowing pipe of the cross four-way pipe, and the double perspective flanges are respectively welded at two ends of a perspective pipe of the cross four-way pipe to form a four-way flange pipe joint; (2) and (3) assembling a back flushing pipeline monitoring device: the glass sealing ring is arranged in the glass sealing groove; the perspective glass is clamped by the bolt assembly and the perspective glass cover and is arranged on the perspective flange; the monitor bracket is arranged on the perspective glass cover, and a transmitter and a receiver of the photoelectric monitor are respectively arranged on the dual monitor brackets to form a back flushing pipeline monitoring device; (3) the assembly of the back-flushing pipeline monitoring device and the back-flushing material cleaning mechanism comprises: the back-blowing pipeline monitoring device is arranged on a back-blowing pipeline of the back-blowing material cleaning mechanism, is positioned on the left side of a back-blowing pipeline valve (namely positioned between the back-blowing pipeline valve and the multipurpose gas storage tank), and is connected with a PLC program control system; the slurry which is in series connection with the back-flushing pipeline due to leakage damage of the valve core can be detected, and a back-flushing pipeline valve fault signal is transmitted to the PLC program control system.

The invention also provides a filter press feed channel back-blowing material cleaning mechanism, which uses the back-blowing pipeline material accumulation monitoring device provided by the invention; the feed channel back-blowing material cleaning mechanism mainly comprises an air compressor, a multipurpose air storage tank, a back-blowing pipeline and a back-blowing pipeline monitoring device; the back-blowing pipeline comprises a back-blowing pipeline and double back-blowing pipeline valves (one of which is a standby valve); the feed channel back-blowing material cleaning mechanism has the function of back-blowing residual materials (including materials deposited in the feed hole of the filter chamber in the pressure maintaining process) staying in the feed channel to the material stirring position.

The back-flushing pipeline accumulated material monitoring device and the back-flushing material cleaning mechanism of the filter press feeding channel have the advantages of photoelectric monitoring of jet, valve fault distance diagnosis, timely transmission of fault signals and automatic closing of fault pipelines, and have the advantages that the back-flushing pipeline accumulated material monitoring device is additionally arranged on a back-flushing pipeline between a back-flushing pipeline valve and a multipurpose gas storage tank, so that slurry which is strung into the back-flushing pipeline due to leakage damage of a valve core can be timely detected, the back-flushing pipeline valve fault signals are transmitted to a PLC (programmable logic controller) system, the PLC system synchronously closes a back-flushing pipeline standby valve, and more corrosive slurry is prevented from strung into the multipurpose gas storage tank; the automatic monitoring and controlling capability of the back flushing pipeline fault is improved, the technical problem that people are eagerly solved but fail to obtain successful back flushing valve core leakage damage monitoring all the time is solved, and the gas storage tank and related equipment elements are effectively protected from being corroded; and (5) modifying and upgrading the product.

Drawings

FIG. 1 is a schematic front view of a blowback pipeline material accumulation monitoring device according to the present invention.

FIG. 2 is a schematic side view of the back flushing pipeline material accumulation monitoring device according to the present invention.

FIG. 3 is a schematic view of a four-way flange pipe joint of the back flushing pipeline material accumulation monitoring device of the present invention.

FIG. 4 is a schematic view of a perspective glass cover of the back flushing pipeline material accumulation monitoring device of the present invention.

FIG. 5 is a schematic view of a monitor stand of the back-flushing pipeline material accumulation monitoring device according to the present invention.

FIG. 6 is a schematic view showing the connection relationship between the material accumulation monitoring device of the back-blowing pipeline and the push plate according to the present invention.

FIG. 7 is a schematic view of the assembly of the back flushing pipeline material accumulation monitoring device and the corresponding automatic membrane filter press according to the present invention.

Reference numerals: the device comprises a 1-four-way flanged pipe joint, a 2-photoelectric monitor (a correlation photoelectric switch), a 3-monitor bracket, 4-perspective glass, a 5-perspective glass cover, a 6-glass sealing ring, a 7-pipe joint flange, an 8-perspective flange, a 9-glass sealing groove, a 10-perspective hole, an 11-bracket adjusting hole, a 12-push plate, a 13-back flushing pipeline, a 14-back flushing pipeline accumulated material monitoring device (a back flushing pipeline monitoring device or the invention for short), a 15-back flushing air inlet, a 16-PLC program control system, a 17-filter plate (comprising a matched membrane filter plate box type filter plate), an 18-feeding channel, a 20-pull plate cake unloading mechanism, a 21-thrust plate and a 22-back flushing pipeline valve.

Detailed Description

The technical solution in the embodiment of the present invention is described below with reference to the accompanying drawings in the embodiment of the back-flushing pipeline material accumulation monitoring device and the back-flushing material cleaning mechanism of the filter press feeding channel of the present invention, and the described embodiment is only a part of the preferred embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments without creativity, such as a back-flushing pipeline material accumulation monitoring device with the same emission photoelectric monitoring mode and a similar structure, which are made by those skilled in the art, belong to the protection scope of the present invention.

Example 1

A back-flushing pipeline material accumulation monitoring device 14 (back-flushing pipeline monitoring device for short) has the key points of the innovative overall implementation scheme that: on the basis of the back-blowing material cleaning mechanism of the feeding channel of the existing filter press, a back-blowing pipeline material accumulation monitoring device 14 is additionally arranged, and comprises a four-way flange pipe joint 1, a photoelectric monitor 2 (a counter-emitting photoelectric switch), a monitor bracket 3, perspective glass 4, a perspective glass cover 5 and a glass sealing ring 6, wherein the back-blowing pipeline 13 (positioned between a back-blowing pipeline valve 22 and a multipurpose gas storage tank) on the left side of a back-blowing pipeline valve 22 is integrally arranged and is connected with a PLC (programmable logic controller) system 16; when the valve core of the back-flushing pipeline valve 22 is damaged in a leakage manner and corrosive slurry is in series connection with the back-flushing pipeline 13 and the multipurpose gas storage tank through the damaged back-flushing pipeline valve 22 for a long time, the photoelectric monitor 2 of the back-flushing pipeline monitoring device 14 can timely detect the slurry in series connection with the back-flushing pipeline 13 due to the valve core damage in a leakage manner and transmit a back-flushing pipeline valve 22 fault signal to the PLC program control system 16, the PLC program control system 16 synchronously controls the air compressor to stop and close the back-flushing pipeline standby valve and alarms that the back-flushing pipeline valve 22 is damaged, so that more corrosive slurry is prevented from being in series connection with the multipurpose gas storage tank; specific embodiments are described in detail below.

The four-way flange pipe joint 1 comprises a cross four-way pipe, a double-pipe joint flange 7 and a double perspective flange 8; the cross four-way pipe comprises a back-blowing pipe and a perspective pipe; the see-through flange 8 has a glass sealing groove 9; assembling and welding the four-way flange pipe joint 1: the double-pipe joint flanges 7 are respectively welded at two ends of a back-blowing pipe of the cross four-way pipe, and the double perspective flanges 8 are respectively welded at two ends of a perspective pipe of the cross four-way pipe to form a four-way flange pipe joint 1; used for connecting the back flushing pipeline 13 and installing the photoelectric monitor 2.

The photoelectric monitor 2 is a T18-6MX correlation type photoelectric switch and comprises a transmitter and a receiver; the monitor bracket 3 is arranged on the perspective glass cover 5, and the emitter and the receiver of the photoelectric monitor 2 are respectively arranged on the dual monitor bracket 3 to form a back-blowing pipeline monitoring device 14; the light emitted by the emitter directly enters the receiver, and when the detected object passes through the space between the emitter and the receiver to block the light, the photoelectric switch generates a switching signal; the system is used for detecting slurry which is in series connection with the back flushing pipeline 13 due to leakage damage of the valve core and transmitting a back flushing pipeline valve 22 fault signal to the PLC program control system 16.

The monitor bracket 3 is a convex bracket, a waist-shaped bracket adjusting hole is arranged in the middle, mounting holes are arranged at two ends of the monitor bracket, and the pitch of the double mounting holes is equal to that of the perspective glass cover 5; the monitor bracket 3 is mounted on the perspective glass cover 5 and is used for adjustably mounting the photoelectric monitor 2 (a correlation photoelectric switch).

The perspective glass 4 is a circular perspective glass 4 with the thickness of 20mm, and the diameter of the perspective glass 4 is larger than that of the glass sealing groove 9; two sides of the perspective glass 4 are provided with glass sealing rings 6, and the perspective glass 4 is clamped by a bolt component and a perspective glass cover 5 and is arranged on a perspective flange 8; the device is used for enabling light rays emitted by the emitter of the photoelectric monitor 2 to directly enter the receiver, and observing slurry which is between the emitter and the receiver and blocks the light rays and is connected into a back flushing pipeline due to leakage damage of the valve core.

The perspective glass cover 5 is a circular cover matched with the perspective flange 8 and is provided with a glass sealing groove 9 and a central perspective hole 10; the perspective glass 4 is clamped by a bolt component and a perspective glass cover 5 and is arranged on a perspective flange 8; for pressing the glass 4 and mounting the monitor mount 3.

The back flushing pipeline accumulated material monitoring device 14 provided by the invention has the advantages of correlation photoelectric monitoring, interval diagnosis of valve faults, timely transmission of fault signals and automatic closing of fault pipelines; the technical problem that the gas storage tank and related equipment elements are corroded because corrosive slurry is connected into the blowback pipeline 13 and the multipurpose gas storage tank in series through the damaged blowback valve during pressure filtration once the leakage damage of the valve core is difficult to find in time due to the fact that a blowback valve is absent in the blowback material cleaning mechanism to damage the leaked slurry monitoring device is solved; the automatic monitoring and controlling capability of the fault of the back flushing pipeline 13 is increased.

Example 2

A filter press feed channel blowback material cleaning mechanism (short for: feed channel blowback material cleaning mechanism) uses the blowback pipeline material accumulation monitoring device 14 (short for: blowback pipeline monitoring device) provided by the invention; the feed channel back-blowing material-cleaning mechanism mainly comprises an air compressor, a multipurpose air storage tank, a back-blowing pipeline and a back-blowing pipeline monitoring device 14; the feed channel back-blowing material cleaning mechanism has the function of back-blowing residual materials (including materials deposited in the feed hole of the filter chamber during pressure maintaining) staying in the feed channel 18 to the material stirring position. The invention is manufactured according to the standard of China general machinery industry Standard 'Van and plate and frame Filter Press' T/CGMA 0701-2021.

The air compressor is an LU15-8 type air compressor; the multi-purpose air storage tank is a high-pressure air storage tank shared by a back-flushing material cleaning mechanism, a blow-drying purification process and the like; the back-blowing pipeline comprises a back-blowing pipeline 13 and double back-blowing pipeline valves 22 (one of which is a spare valve), wherein the back-blowing pipeline valves 22 are QV647Y-160 DN150 type pneumatic switch ball valves; the back flushing pipeline monitoring device 14 comprises a four-way flange pipe joint 1, a photoelectric monitor 2 (a correlation photoelectric switch), a monitor support 3, perspective glass 4, a perspective glass cover 5 and a pipe joint sealing ring 6.

Installation of a feed channel blowback material cleaning mechanism: the air compressor and the multipurpose air storage tank are respectively arranged on the ground of the tail of the filter press and are connected by a pipeline; a back-blowing pipeline 13 is used for connecting the multipurpose air storage tank with a back-blowing air inlet of the push plate 12; the double back-blowing pipeline valves 22 are arranged on the back-blowing pipeline 13 close to the push plate 12, and the back-blowing pipeline monitoring device 14 is arranged between the back-blowing pipeline valves 22 and the multipurpose gas storage tank, is arranged on the back-blowing pipeline 13, and is connected with the PLC program control system 16.

The working process of the feed channel back-blowing material cleaning mechanism is as follows: after squeezing and dewatering (including pressure maintaining) of the automatic membrane filter press, under the control of a PLC (programmable logic controller) system 16, air is compressed by an air compressor into a multipurpose air storage tank, high-pressure gas in the air storage tank sequentially passes through a back-blowing pipeline 13 and a feeding channel 18 (including feeding holes of a filter plate 17 and a thrust plate 21) in the opposite feeding direction, and residual materials (including materials deposited in a feeding hole of a filter chamber in the pressure maintaining process) staying in the feeding channel 18 are blown back to a material stirring position, so that the influence of residual slurry on the purity of a filter cake is avoided, and the feeding hole of the filter chamber is dredged to facilitate smooth feeding of the next time; after drying and purifying, the plate pulling and cake discharging mechanism pulls the filter plate 17 open to realize gravity cake discharging. When the valve core of the back-flushing pipeline valve 22 is damaged in a leakage manner and corrosive slurry is in series connection with the back-flushing pipeline 13 and the multipurpose gas storage tank through the damaged back-flushing pipeline valve 22 for a long time, the photoelectric monitor 2 of the back-flushing pipeline monitoring device 14 can timely detect the slurry in series connection with the back-flushing pipeline due to the valve core damage in a leakage manner and transmit a back-flushing pipeline valve 22 damage signal to the PLC program control system 16, the PLC program control system 16 synchronously controls the air compressor to stop and close the back-flushing pipeline standby valve and alarms that the back-flushing pipeline valve 22 is damaged, and more corrosive slurry is prevented from being in series connection with the multipurpose gas storage tank.

The back-blowing material cleaning mechanism for the feed channel of the filter press has the advantages that the back-blowing pipeline material accumulation monitoring device 14 is additionally arranged on the back-blowing pipeline 13 between the back-blowing pipeline valve 22 and the multipurpose gas storage tank, so that slurry which is in series into the back-blowing pipeline 13 due to leakage damage of a valve core can be detected in time, a fault signal of the back-blowing pipeline valve 22 is transmitted to the PLC (programmable logic controller) system 16, the PLC system 16 synchronously closes a back-blowing pipeline standby valve, and more corrosive slurry is prevented from being in series into the multipurpose gas storage tank; the automatic monitoring and controlling capability of the fault of the back flushing pipeline 13 is improved, the technical problem that people are eagerly solved but fail to obtain successful back flushing valve 22 valve core leakage damage monitoring all the time is solved, and the gas storage tank and related equipment elements are effectively protected from being corroded; and (5) modifying and upgrading the product.