Waste gas collecting device of high-speed dispersion machine

Abstract

The utility model relates to the field of material treatment, and discloses a waste gas collecting device of a high-speed dispersion machine, which comprises a gas collecting hood arranged on a stirring shaft, a VOCs (Volatile Organic Compounds) sensor arranged on the gas collecting hood, and a PLC (Programmable Logic Controller) and an electric valve arranged in an electric control cabinet of the dispersion machine, the gas-collecting hood is connected with a negative pressure main pipe of the waste gas treatment system through an exhaust pipe; the electric valve is arranged on the exhaust pipe; the signal input end of the PLC is connected with the VOCs sensor, and the signal output end of the PLC is connected with the electric valve. According to the utility model, the VOCs sensor can be used for monitoring the concentration of waste gas emitted by the charging basket in real time and feeding back the concentration data to the PLC, and the PLC is used for adjusting the opening degree of the electric valve according to the concentration of the waste gas so as to adjust the negative pressure, so that the workload and the energy consumption of a waste gas treatment system can be reduced to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to material processing field especially, relate to a high -speed dispersion machine waste gas collection device. BACKGROUND

[0002] High -speed dispersion machine utilizes high -speed agitator to form very strong turbulence in local, make material reach dispersion emulsification effect, is widely used in chemical industry, food, medical industry, when dispersing chemical material, there can be VOCs waste gas unorganized emission problem, therefore, the stirring shaft of dispersion machine is provided with gas collecting hood, and the gas collecting hood is connected with the negative pressure main pipe of waste gas treatment system through the air suction pipe, and the VOCs waste gas is sucked to the waste gas treatment system for centralized treatment by the negative pressure main pipe, because the negative pressure main pipe of waste gas treatment system increases the waste gas collection point every time, the system load is increased, and the system energy consumption is also increased, therefore, how to reduce the system load and energy consumption is an urgent problem to be solved.

[0003] Based on this, the application provides a high-speed dispersion machine waste gas collection device capable of automatically adjusting the opening degree of the electric valve according to the VOCs concentration to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the technical problems existing in the prior art. To this end, the utility model provides a high-speed dispersion machine waste gas collection device capable of automatically adjusting the opening degree of the electric valve according to the VOCs concentration.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] A high-speed dispersion machine waste gas collection device is provided, which comprises a gas collecting hood arranged on a stirring shaft, a VOCs sensor arranged on the gas collecting hood, a PLC controller and an electric valve arranged in an electric control cabinet of the dispersion machine, wherein the gas collecting hood is connected with the negative pressure main pipe of a waste gas treatment system through an air suction pipe, and the electric valve is arranged on the air suction pipe; the signal input end of the PLC controller is connected with the VOCs sensor, and the signal output end of the PLC controller is connected with the electric valve.

[0007] In some optional embodiments, the gas collecting hood is slidingly mounted on the stirring shaft, and a plurality of air cylinders are arranged on the gas collecting hood, and the cylinder bodies of the air cylinders are fixedly mounted on the dispersion machine.

[0008] In some optional embodiments, a horizontal surface is arranged on the outer edge of the gas collecting hood, a sealing groove is arranged at the bottom of the horizontal surface, and a sealing gasket is arranged in the sealing groove.

[0009] In some optional embodiments, a telescopic pipe is further sleeved on the stirring shaft, one end of the telescopic pipe is fixedly connected with the gas collecting hood, and the other end of the telescopic pipe is fixedly connected with the dispersion machine.

[0010] In some alternative embodiments, the gas collecting hood is provided with a feeding valve and a valve limiting plate, the valve limiting plate is provided with a proximity switch; the exhaust pipe is further provided with a second electric valve in parallel with the electric valve, and the second electric valve and the proximity switch are both electric signal connected with the PLC controller.

[0011] In some alternative embodiments, the valve limiting plate is further provided with a permanent magnet for attracting the feeding valve.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The utility model can utilize the VOCs sensor to monitor the exhaust gas concentration emitted by the material bucket in real time, and feed the concentration data to the PLC controller, and the PLC controller adjusts the opening degree of the electric valve according to the exhaust gas concentration to adjust the negative pressure, which can reduce the working load and energy consumption of the exhaust gas treatment system to a certain extent.

[0014] 2. The gas collecting hood is designed as a movable structure, which can be opened flexibly and independently without affecting the stirring effect compared with a fixed structure.

[0015] 3. The valve limiting plate and the proximity switch of the gas collecting hood and the second electric valve arranged on the exhaust pipe are controlled by the PLC controller to open the second electric valve to improve the negative pressure effect when feeding, so that the exhaust gas does not escape to pollute the environment when the opening degree of the electric valve is small. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings, wherein:

[0017] Figure 1 is the structural schematic view of the exhaust gas collecting device of the high-speed dispersion machine provided by the utility model;

[0018] Figure 2 is Figure 1 the installation structure diagram of the feeding valve and the valve limiting plate on the gas collecting hood provided by the utility model;

[0019] In the drawings, the component list represented by each sign is as follows:

[0020] 1 - gas hood, 1.1 - sealing groove, 1.2 - sealing gasket, 2 - VOCs sensor, 3 - PLC controller, 4 - electric valve, 5 - air cylinder, 6 - suction pipe, 7 - negative pressure main pipe, 8 - telescopic pipe, 9 - filling valve, 10 - valve limit plate, 11 - proximity switch, 12 - second electric valve, 13 - permanent magnet. DETAILED DESCRIPTION

[0021] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application;

[0024] In addition, the terms "first", "second" and the like described in the present application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. The terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0026] As shown in the accompanying drawings Figure 1As shown, the embodiment provides a high-speed disperser waste gas collection device, comprising a gas hood 1, a VOCs sensor 2, a PLC controller 3 and an electric valve 4, wherein:

[0027] The gas hood 1 is slidingly installed on the stirring shaft of the disperser, and a plurality of air cylinders 5 are arranged on the gas hood 1, the cylinder bodies of the air cylinders 5 are fixedly installed on the disperser, and specifically, 2-4 air cylinders 5 can be arranged, and preferably 3 air cylinders 5 are arranged. The gas hood 1 of the embodiment is used for sealing when the material in the barrel is high-speed stirred, so as to prevent the waste gas from escaping and polluting the environment, and the gas hood is designed as a movable structure, so that the device can be controlled by the air cylinder to rise the gas hood during high-speed stirring, so as to view the dispersion effect of the material without dead angle. Compared with the fixed gas hood, the flexibility is higher. The gas hood 1 is connected to the negative pressure main pipe 7 of the waste gas treatment system through the air suction pipe 6, and the waste gas volatilized in the barrel is sucked to the waste gas treatment system for treatment by using the negative pressure of the negative pressure main pipe. The VOCs sensor 2 is arranged on the gas hood 1 and is used for real-time detection of the waste gas concentration emitted from the barrel. The electric valve 4 is arranged on the air suction pipe 6, and the opening of the valve can be adjusted to adjust the size of the negative pressure. The PLC controller 3 is arranged in the electric control cabinet of the disperser, the signal input end of the PLC controller 3 is connected to the VOCs sensor 2, and the signal output end of the PLC controller 3 is connected to the electric valve 4. The opening of the electric valve can be automatically controlled by the PLC controller according to the waste gas concentration detected by the VOCs sensor, and the specific control is as follows: the larger the waste gas concentration, the larger the opening of the electric valve, and vice versa.

[0028] The embodiment can utilize the VOCs sensor to monitor the waste gas concentration volatilized from the barrel in real time, and feed back the concentration data to the PLC controller. The PLC controller adjusts the opening of the electric valve according to the waste gas concentration to adjust the size of the negative pressure, so as to reduce the working load and energy consumption of the waste gas treatment system to a certain extent.

[0029] Preferably, the outer edge of the gas hood 1 is provided with a horizontal plane, the bottom is provided with a sealing groove 1.1, and the sealing groove 1.1 is provided with a sealing gasket 1.2. The embodiment can utilize the air cylinder to provide pressure, and seal the mouth of the barrel through the sealing gasket in the sealing groove, so as to have good sealing effect. At the same time, the width of the sealing groove can be designed according to the size of the barrel diameter, and the width of the sealing groove preferably can meet the sealing of all barrel diameters.

[0030] Preferably, the stirring shaft is further sleeved with an extension pipe 8, one end of the extension pipe 8 is fixedly connected to the gas hood 1, and the other end is fixedly connected to the disperser. The extension pipe is designed to seal the gap between the gas hood and the stirring shaft, so as to prevent the waste gas from escaping and polluting the environment.

[0031] As shown in the accompanying drawings Figure 2As shown, the gas collecting hood 1 is provided with a feeding valve 9, which can be used for feeding materials. When the VOCs sensor detects that the exhaust gas concentration is low, the opening degree of the electric valve is small, and at this time, opening the feeding valve may cause the problem of exhaust gas escaping, therefore, the embodiment is further provided with a valve limiting plate 10, which is provided with a proximity switch 11; the exhaust pipe 6 is further provided with a second electric valve 12 in parallel with the electric valve 4, which is a normally closed type, and the second electric valve 12 and the proximity switch 11 are both electrically connected to the PLC controller 3. Working principle: when the feeding valve is opened, the proximity switch detects the opening signal of the valve and feeds back the signal to the PLC controller, at this time, the PLC controller controls the second electric valve to be opened, so as to improve the negative pressure effect in the gas collecting hood, which can effectively prevent the exhaust gas from escaping, and when it is detected that the feeding valve is closed, the PLC controller controls the second electric valve to be closed.

[0032] Preferably, the valve limiting plate 10 is further provided with a permanent magnet 13 for attracting the feeding valve 9, which can keep the feeding valve in the opened state by using the permanent magnet, so as to facilitate feeding, and after the feeding is completed, the feeding valve is manually closed.

[0033] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, are all included in the patent protection range of the present application.

Claims

1. A high-speed disperser exhaust collection device characterized by: The device comprises a gas collecting cover arranged on the stirring shaft, a VOCs sensor arranged on the gas collecting cover, a PLC controller arranged in an electric control cabinet of the disperser and an electric valve, wherein: The gas collecting cover is connected to a negative pressure main pipe of the waste gas treatment system through an exhaust pipe, and the electric valve is arranged on the exhaust pipe; The gas collecting cover is slidably arranged on the stirring shaft, and a plurality of air cylinders are arranged on the gas collecting cover, cylinder bodies of the air cylinders being fixedly arranged on the disperser; An outer edge of the gas collecting cover is provided with a horizontal surface, and a bottom of the gas collecting cover is provided with a sealing groove, and a sealing gasket is arranged in the sealing groove; A telescopic pipe is further sleeved on the stirring shaft, one end of the telescopic pipe being fixedly connected to the gas collecting cover, and the other end of the telescopic pipe being fixedly connected to the disperser; A signal input end of the PLC controller is connected to the VOCs sensor, and a signal output end of the PLC controller is connected to the electric valve.

2. The high-speed disperser exhaust collection device of claim 1, wherein: A charging valve and a valve limiting plate are arranged on the gas collecting cover, the valve limiting plate is provided with a proximity switch, a second electric valve is arranged on the exhaust pipe in parallel with the electric valve, and the second electric valve and the proximity switch are both electrically connected to the PLC controller.

3. A high speed disperser exhaust collection device according to claim 2, characterised in that: A permanent magnet for attracting the charging valve is further arranged on the valve limiting plate.

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