CN210953725U

CN210953725U - Dust detection device

Info

Publication number: CN210953725U
Application number: CN201921240506.4U
Authority: CN
Inventors: 宁英杰; 黄晓伟; 何智钢; 龚振远; 白丽辉
Original assignee: Zhejiang Communications Construction Group Co Ltd
Current assignee: Zhejiang Communications Construction Group Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-07-07
Anticipated expiration: 2029-08-01

Abstract

A dust detection device aims to solve the technical problem that in the prior art, when wet dust removal is carried out in a factory, the normal work of a dust detector can be influenced by a mixture of a large amount of dust and dust falling liquid which are quickly attached to the dust detector. The utility model discloses a fix the dust detector on the installation face, be equipped with on the installation face and carry out abluent shower nozzle to dust detector, the washing liquid that the shower nozzle flows is all retrieved by the cell type water collector of establishing in the dust detector below for carry out dry hot-blast rifle and installation face fixed connection to dust detector, be equipped with on the installation face and carry out the fender sealing device that separates of protecting to the inside electronic component of dust detector, be equipped with the roughness sensor of the roughness of pipe wall in the last collection pipe of monitoring dust detector on dust detector's the surface. The utility model discloses beneficial effect as follows: the spray head automatically cleans the dust detector, thereby ensuring the normal work of the dust detector.

Description

Dust detection device

Technical Field

The utility model relates to an environmental monitoring technical field especially relates to a dust detection device.

Background

Dust detection is one of the most important quality indexes of environmental detection, and certain dust removal measures are often required when the dust concentration is too high in industrial production and daily life. The currently common dust removal measures are mainly divided into a dry method and a wet method, wherein the dry dust removal is most typical of cloth bag dust removal in cement production, and the reliability of the dust removal method is demonstrated in long-term production practice; the main process of wet dust removal is spraying atomized water mist, the suspended dust in an aerosol state is increased in weight after contacting the water mist, the metastable state of the aerosol is destroyed by the sprayed water mist, and the increased dust falls from the air, so that the dust falling operation is completed. Wet dedusting's application scope is wider, and multiple gaseous particle suspended solid all can accomplish the dust fall through wet dedusting and handle, but suspended particles such as dust can produce after mixing with the water smoke and adhere to on the dust detector, when using wet dedusting in the higher environment of dust concentration such as mill, the mixture of dust and water can be a large amount of, gather on the dust detector fast, and then seriously influence the normal use of dust detector.

Chinese patent application No. CN 201710457404.7 discloses a multifunctional indoor environment detection device, comprising a bottom plate, wherein four casters are arranged on the side of the bottom plate, a dust removal device is arranged at the left end of the upper surface of the bottom plate, a support frame is arranged in the middle of the upper surface of the bottom plate, a PLC controller is arranged on the front surface of the support frame, the input end of the PLC controller is electrically connected with the output end of an external power supply, a humidifier is arranged at the front end of the upper surface of the support frame, the input end of the humidifier is electrically connected with the output end of the PLC controller, a telescopic rod is arranged in the middle of the upper surface of the support frame, the middle of the side of the fixed end of the telescopic rod is fixedly connected with the support frame, a second fastening knob is arranged at the upper end of the side of the fixed end of the telescopic rod, the gas detector is electrically connected with the PLC in a two-way mode, a temperature and humidity sensor is arranged on the side face of the fixing seat adjacent to the gas detector, and the output end of the temperature and humidity sensor is electrically connected with the input end of the PLC.

In the patent, gas in the environment is pumped into the device through the air exhaust channel to detect the dust concentration, and when the dust concentration is detected to be too high, liquid in the water tank is atomized and then discharged through the air outlet pipe to perform dust fall treatment on the surrounding environment; however, due to the wet dust settling measures, when the dust concentration in the environment is too high, the dust and the water mist are mixed and then adhere to the inner walls of the exhaust pipe and the air outlet pipe, so that the dust detection precision is reduced on one hand, and the air outlet pipe is blocked on the other hand, so that the dust settling effect is reduced.

Disclosure of Invention

The utility model discloses an overcome among the prior art when using wet dedusting in the mill, quick, a large amount of dust that adhere to on the dust detector and the technical problem that falls the normal work of dust detector can be influenced to the mixture of dirt liquid, provide a dust detection device, roughness sensor in the device can the roughness on real-time supervision dust detector surface, works as when the roughness is less than and sets for the threshold value, the shower nozzle washs dust detector, clears away the dust that adheres to on the dust detector and falls the mixture of dirt liquid to guarantee dust detector normal work.

In order to achieve the above purpose, the present invention adopts the following technical solution.

The utility model provides a dust detection device, is including fixing the dust detector on the installation face, be equipped with on the installation face and carry out abluent shower nozzle to the dust detector, the washing liquid that the shower nozzle flows is all retrieved by the cell type water collector of establishing in the dust detector below for carry out dry hot-blast rifle and installation face fixed connection to the dust detector, be equipped with on the installation face and carry out the fender sealing device that separates of protection to the inside electronic component of dust detector, be equipped with the roughness sensor of the roughness of pipe wall in the last gas collecting pipe of monitoring dust detector on the surface of dust detector.

In the current production activity, dust concentration detection and dust falling processing are usually executed in sequence, and when a dust detector monitors that the dust concentration in the production environment exceeds a set threshold value, the dust falling processing of the production environment is started; when wet dedusting is used, dust mixed with the dedusting liquid can adhere to the dust detector to block a gas collecting port of the dust detector, so that the normal work of the dust detector is influenced; when more dust is attached to the inner pipe wall of the gas collecting pipe, when the gas collecting pipe collects air in the environment for dust detection, a large amount of dust on the inner pipe wall of the gas collecting pipe is collected, the dust concentration detected by the dust detector is actually the dust concentration attached to the inner pipe wall of the gas collecting pipe, but not the actual dust concentration in the environment air, and the dust concentration detected by the dust detector is higher due to more dust accumulation on the inner pipe wall of the gas collecting pipe, so that the implementation frequency of dust fall measures is higher; when wet dedusting is used in a factory or other production environment with high dust concentration, a large amount of dust mixed with the dedusting liquid can be rapidly attached to the dust detector, and the frequency of the dust detector entering an abnormal working state is high. In the utility model, a spray head for cleaning the dust detector is arranged on the mounting surface, a roughness sensor for monitoring the flatness of the outer surface is arranged on the outer surface of the dust detector, the roughness sensor monitors the flatness of the outer surface of the dust detector in real time, when the flatness is detected to be higher than the set flatness threshold value, the PLC controller controls the blocking and sealing device to perform liquid-proof protection on the dust detector, then the PLC controls the spray head to clean the gas collecting pipe of the dust detector, when the roughness sensor detects that the flatness of the outer surface of the dust detector is lower than a set flatness threshold value, the shower nozzle stop work, the hot-blast rifle of PLC controller control is dried to the dust detector, waits to keep off sealing device after the drying is accomplished and opens under the regulation and control of PLC controller, and the dust detector continues the dust concentration of detection ring border. In the process, when the spray head is used for cleaning the dust detector, the cleaning liquid can be selected in a targeted manner according to the pH value of the mixture of the dust and the dust-falling liquid, when the mixture of the dust and the dust-falling liquid is alkaline, a weakly acidic cleaning liquid is selected, and when the mixture of the dust and the dust-falling liquid is acidic, a weakly alkaline cleaning liquid is selected; a groove-shaped water collector is arranged below the dust detector, cleaning liquid flowing down from the outer surface of the dust detector and sprayed to the surrounding environment from a spray head is recovered by the groove-shaped water collector, a separation membrane used for separating the cleaning liquid and dust is arranged in a pipeline of the groove-shaped water collector, and the cleaning liquid separated by the separation membrane flows into the spray head again to participate in cleaning. The utility model discloses in, shower nozzle, cell type water collector, hot-blast rifle and separate keep off sealing device and regulate and control by the PLC controller, the roughness sensor of monitoring roughness transmits monitoring data to the PLC controller in real time, and predetermined roughness threshold value is compared in monitoring data and the PLC controller, and the PLC controller forms negative feedback regulating circuit with each other module and device within a definite time, can correspondingly set for different roughness threshold values to different dust and fall dirt liquid, therefore self-cleaning device has extensive suitability.

Preferably, the nozzle is connected with the water outlet of the water pump through a first pipeline, and an electromagnetic valve which is controlled to be opened and closed by a PLC controller is arranged at the connecting position of the nozzle and the first pipeline.

The shower nozzle is equipped with the solenoid valve that opens and shuts by the control of PLC controller with the hookup location of first pipeline, and the instantaneous operation of opening and shutting can be realized to the solenoid valve, and after accomplishing the dust detector washing, the solenoid valve is instantaneous to be closed, has avoided because of the shower nozzle overflow phenomenon that closes gradually and cause of valve.

Preferably, an annular slide rail is arranged on the mounting surface, the dust detector is positioned in the middle of the annular slide rail, a slide block fixedly connected with the spray head is connected with the annular slide rail in a sliding mode, and the input end of a motor for driving the slide block is connected with the output end of the PLC.

Be equipped with annular slide rail on the installation face, with shower nozzle fixed connection's slider and annular slide rail sliding connection, the shower nozzle during operation, the shower nozzle carries out the omnidirectional washing around dust detector's circumferential direction, the washing liquid that the shower nozzle erupted to the internal face of gas collecting pipe, and the mixture that dust and dust fall liquid formed can be cleared up fast on the gas collecting pipe internal face.

Preferably, one end of the groove-shaped water collector, which is far away from the dust detector, is connected with one end of the second pipeline, a separation membrane used for separating dust and cleaning liquid is arranged in the middle section of the second pipeline, and the other end of the second pipeline is connected with a water inlet of the water pump.

The cleaning capability of the cleaning liquid prepared by aiming at the mixture of the dust and the dust reducing liquid is usually not disposable, and the cleaning liquid can be recycled for secondary use; and a separation membrane for separating dust and cleaning liquid is arranged in the middle section of the second pipeline, the mixture of the cleaning liquid and the dust is filtered by the separation membrane, the dust is positioned above the separation membrane, and the cleaning liquid is used as filtrate and is transmitted to a water inlet of the water pump through the second pipeline for secondary utilization.

Preferably, the air outlet of the hot air gun is aligned with the dust detector, and the input end of the hot air gun is connected with the output end of the PLC.

The hot air gun is aligned with the dust detector, the hot air gun does not need to be aligned with a gas collecting pipe of the dust detector, because when the fast flowing hot air flow flows through the gas collecting port, a low-pressure area is formed near the gas collecting port, the gas in the gas collecting pipe fills the low-pressure area at the gas collecting pipe port under the action of pressure difference, when most of the gas in the gas collecting pipe is pumped out, the gas at the gas collecting port flows into the gas collecting pipe under the action of pressure difference, the inflowing hot air flow forms cyclone in the gas collecting pipe, the inner wall surface of the gas collecting pipe is dried, when the gas pressure in the gas collecting pipe is higher than the pressure of the low-pressure area at the gas collecting port, the gas in the gas collecting pipe is filled into the low-pressure area again, so that reciprocating air flow activity is formed, the inner wall surface of the gas collecting pipe is dried fast, particularly, when the hot air flow in the low-pressure, further reducing the dust attachment degree on the inner wall surface of the gas collecting pipe. In addition, the hot air current that the hot-blast rifle blew off carries out drying process to the safety cover, prevents to remain the dust that leads to because of the liquid on the safety cover and adheres to, and the cleanliness of safety cover is higher.

Preferably, the blocking and sealing device comprises a first baffle and a second baffle which are in a quarter spherical shell shape, the first baffle and the second baffle are spliced to form a hemispherical shell-shaped protective cover, the dust detector is positioned in the protective cover, the gas collecting port of the gas collecting pipe is positioned outside the protective cover, and the upper end of the protective cover is in sealing fit with the mounting surface.

In the utility model, the spraying object is mainly the inner wall surface of the gas collecting pipe, and the dust detector comprises an electronic element, so that the dust detector needs to be subjected to waterproof treatment; the first baffle and the second baffle are spliced to form a hemispherical shell-shaped protective cover to carry out waterproof sealing on the dust detector, the gas collecting port of the gas collecting pipe is positioned outside the protective cover, and the spray head and the hot air gun are matched to finish dust attached to the inner wall surface of the gas collecting pipe.

Preferably, the mounting surface is provided with a first slide rail and a second slide rail which are symmetrically distributed on two sides of the dust detector, the first baffle can slide along the first slide rail in a reciprocating manner under the driving of the first cylinder, the second baffle can slide along the second slide rail in a reciprocating manner under the driving of the second cylinder, and the first slide rail and the second slide rail are both long-strip-shaped.

When first baffle and second baffle are close to the dust detector along first slide rail and second slide rail, the safety cover that first baffle and second baffle cooperation formed carries out waterproof sealing to the dust detector, and the shower nozzle is cleared up the internal face of discharge, and when first baffle and second baffle kept away from the dust detector along first slide rail and second slide rail, the dust detector normally worked.

Preferably, the separation membrane is arranged obliquely in the second duct, and the dust separated by the separation membrane is accumulated at an acute angle formed by the separation membrane and the inner tube wall of the second duct.

When the separation membrane is perpendicular to the inner wall surface of the second pipeline, the mixture of the cleaning solution and the dust is filtered by the separation membrane, the dust is flatly paved and accumulated above the separation membrane, the mixed cleaning solution for subsequent separation is filtered by the separation membrane after being permeated by a dust layer, the filtration efficiency of the separation membrane is low, and a large amount of cleaning solution can be accumulated in the second pipeline; the utility model discloses in, the separating membrane slope is arranged in the second pipeline, dust after the separating membrane separation is gathered at the acute angle contained angle department that separating membrane and second pipeline inner tube wall formed, the mixed washing liquid that needs the separation is at first not had one side contact that the dust gathers with the separating membrane, the separating membrane separates mixed washing liquid, the dust of separation adhesion on the separating membrane is washed away by follow-up washing liquid, the dust landing is to acute angle dust gathering department, from this separate separating membrane automatic separation for two regions, the separating membrane that contacts earlier with mixed washing liquid is used for separating washing liquid and dust, the separating membrane that contacts behind the mixed washing liquid is used for bearing the weight of gathering dust, the dust that gathers on the separating membrane that contacts earlier with mixed washing liquid slides to the acute angle department of gathering dust under the washing away of follow-up washing liquid, when the dust volume of gathering is great, it can to change the separating membrane.

Preferably, a humidity sensor is arranged on the inner wall surface of the gas collecting pipe.

Be equipped with humidity transducer on the internal face of gas collecting pipe, humidity transducer monitors the humidity of gas collecting pipe internal face to give PLC controller with data transmission, when monitoring humidity and being less than the humidity threshold value of settlement, the heat gun stop work.

To sum up, the utility model discloses following beneficial effect has: the mixture of dust and dust fall liquid can adhere to the internal face at the discharge in the mill when using the wet process dust fall, leads to the unable normal work of dust detector, roughness sensor in the device can the roughness on real-time supervision dust detector surface, works as when the roughness is higher than and sets for the threshold value, the shower nozzle is washd dust detector, clears away the dust that adheres to on dust detector and the mixture of dust fall liquid to guarantee that dust detector normally works.

Drawings

Fig. 1 is a schematic overall structure of the present invention.

Fig. 2 is another overall schematic structural diagram of the present invention.

In the figure: 1. the device comprises a mounting surface, 2, a dust detector, 3, a spray head, 4, a groove type water collector, 5, a hot air gun, 5a, an air outlet, 6, a gas collecting pipe, 6a, a gas collecting port, 7, a roughness sensor, 8, a first pipeline, 9, a water pump, 9a, a water inlet, 9b, a water outlet, 10, a PLC (programmable logic controller), 11, an electromagnetic valve, 12, an annular slide rail, 13, a slide block, 14, a second pipeline, 15, a separation membrane, 16, a protective cover, 16a, a first baffle, 16b, a second baffle, 17, a first slide rail, 18 and a second slide rail.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

a dust detection device comprises a dust detector 2 fixed on a mounting surface 1, a spray head 3 for cleaning the dust detector is arranged on the mounting surface, cleaning liquid flowing out of the spray head is recovered by a groove-shaped water collector 4 arranged below the dust detector, a hot air gun 5 for drying the dust detector is fixedly connected with the mounting surface, a blocking and sealing device for protecting electronic elements in the dust detector is arranged on the mounting surface, and a roughness sensor 7 for monitoring the flatness of the inner pipe wall of a gas collecting pipe 6 on the dust detector is arranged on the outer surface of the dust detector; the spray head is connected with a water outlet 9b of a water pump 9 through a first pipeline 8, and an electromagnetic valve 11 which is controlled to be opened and closed by a PLC 10 is arranged at the connecting position of the spray head and the first pipeline; an annular slide rail 12 is arranged on the mounting surface, the dust detector is positioned in the middle of the annular slide rail, a slide block 13 fixedly connected with the spray head is connected with the annular slide rail in a sliding manner, and the input end of a motor for driving the slide block is connected with the output end of the PLC; one end of the groove-shaped water collector, which is far away from the dust detector, is connected with one end of a second pipeline 14, a separation membrane 15 for separating dust and cleaning liquid is arranged at the middle section of the second pipeline, and the other end of the second pipeline is connected with a water inlet 9a of the water pump; the air outlet 5a of the hot air gun is aligned with the dust detector, and the input end of the hot air gun is connected with the output end of the PLC; the blocking and sealing device comprises a first baffle 16a and a second baffle 16b which are in a quarter-spherical shell shape, the first baffle and the second baffle are spliced to form a hemispherical shell-shaped protective cover 16, the dust detector is positioned in the protective cover, the gas collecting port 6a of the gas collecting pipe is positioned outside the protective cover, and the upper end of the protective cover is in sealing fit with the mounting surface; the mounting surface is provided with a first slide rail 17 and a second slide rail 18 which are symmetrically distributed on two sides of the dust detector, the first baffle plate can slide along the first slide rail in a reciprocating manner under the driving of the first cylinder, the second baffle plate can slide along the second slide rail in a reciprocating manner under the driving of the second cylinder, and the first slide rail and the second slide rail are both long-strip-shaped; the separation membrane is obliquely arranged in the second pipeline, and dust separated by the separation membrane is accumulated at an acute included angle formed by the separation membrane and the inner pipe wall of the second pipeline; the inner wall surface of the gas collecting pipe is provided with a humidity sensor.

In the utility model, the roughness sensor monitors the flatness of the inner wall surface of the gas collecting pipe in real time, monitoring data is transmitted to the PLC controller in real time, the monitoring data is compared with a flatness threshold value preset in the PLC controller, wherein, the index value of the flatness is larger, which means that the flatness of the inner wall surface of the gas collecting pipe is lower, the more the mixture of dust and dust-falling liquid is adhered to the inner wall surface of the gas collecting pipe, when the monitoring data is larger than the flatness threshold value, the PLC controller controls the first baffle and the second baffle to slide close to a dust detector, when the first baffle and the second baffle are spliced into a complete hemispherical protective cover, the PLC controller controls the sprayer to start working, the slider drives the sprayer to move along an annular slide rail on a mounting surface, the sprayer cleans the inner wall surface of the gas collecting pipe, wherein, the sprayer does not move continuously along the annular slide rail, the interval frequency and the interval time, roughness sensor monitors the roughness of gas collecting pipe internal face in every interval, compare data transmission to PLC controller and the roughness threshold value of settlement, when monitoring data is less than the roughness threshold value, the shower nozzle stop work, the hot-blast rifle begins to dry under the control of PLC controller, because dust detector's electronic component all is located and keeps off sealing device inside, consequently the hot-blast rifle only dries the internal face of gas collecting pipe and keeps off sealing device's surface, be equipped with humidity transducer on the internal face of gas collecting pipe, when humidity transducer's monitoring humidity is less than the humidity threshold value of settlement in the PLC controller, hot-blast rifle stop work, dust detector is kept away from to first baffle and second baffle, dust detector begins normal work.

Claims

1. The utility model provides a dust detection device, including fixing the dust detector on the installation face, its characterized in that is equipped with on the installation face and carries out abluent shower nozzle to the dust detector, the washing liquid that the shower nozzle flows is all retrieved by the cell type water collector of establishing in dust detector below for carry out dry hot-blast gun and installation face fixed connection to the dust detector, be equipped with on the installation face and carry out the fender sealing device that separates of protection to the inside electronic component of dust detector, be equipped with the roughness sensor of the roughness of pipe wall in the last gas collecting pipe of monitoring dust detector on the surface of dust detector.

2. The dust detection device of claim 1, wherein the nozzle is connected to a water outlet of the water pump via a first pipe, and a solenoid valve controlled to open and close by the PLC is disposed at a connection position between the nozzle and the first pipe.

3. A dust detection device as claimed in claim 2, wherein the mounting surface is provided with an annular slide rail, the dust detector is located in the middle of the annular slide rail, a slide block fixedly connected with the spray head is slidably connected with the annular slide rail, and an input end of a motor for driving the slide block is connected with an output end of the PLC controller.

4. A dust detecting device as claimed in claim 2, wherein an end of the trough-shaped water collector remote from the dust detector is connected to an end of the second pipe, a separation membrane for separating dust and cleaning liquid is provided in a middle section of the second pipe, and the other end of the second pipe is connected to a water inlet of the water pump.

5. A dust testing device as claimed in claim 2, wherein the outlet of the heat gun is aligned with the dust tester, and the input of the heat gun is connected to the output of the PLC controller.

6. The dust detection device of claim 1, wherein the barrier sealing device comprises a first baffle and a second baffle which are in a shape of a quarter spherical shell, the first baffle and the second baffle are spliced to form a hemispherical shell-shaped protective cover, the dust detector is positioned inside the protective cover, the gas collecting port of the gas collecting pipe is positioned outside the protective cover, and the upper end of the protective cover is in sealing fit with the mounting surface.

7. A dust detecting device according to claim 6, wherein the mounting surface is provided with a first slide rail and a second slide rail symmetrically disposed on both sides of the dust detector, the first shutter is driven by the first cylinder to slide back and forth along the first slide rail, the second shutter is driven by the second cylinder to slide back and forth along the second slide rail, and both the first slide rail and the second slide rail are elongated.

8. A dust detecting apparatus according to claim 4, wherein the separating membrane is disposed in the second duct at an angle, and the dust separated by the separating membrane is accumulated at an acute angle formed by the separating membrane and the inner wall of the second duct.

9. A dust detecting device as claimed in claim 1, wherein a humidity sensor is provided on an inner wall surface of the gas collecting duct.