Waste gas treatment equipment controlled by PLC (Programmable Logic Controller)

Abstract

The utility model discloses waste gas treatment equipment controlled by a PLC (Programmable Logic Controller), and relates to the technical field of waste gas treatment. The device comprises a base, a PLC (programmable logic controller) and a reaction box fixedly mounted on one side of the top of the base, the PLC is fixedly mounted on one side of the reaction box, and a stirring shaft lever is rotatably connected between two sides of the inner wall of the reaction box. According to the waste gas purification device, waste gas subjected to primary treatment is input into a purification reactant through the gas conveying pipe, meanwhile, the rotating impeller rotates to drive the synchronous wheel II at the end part of the rotating impeller to rotate, and meanwhile, the synchronous belt is linked with the synchronous wheel I to rotate, so that the stirring shaft rod is driven to rotate to stir the purification reactant, and the waste gas and purified liquid are uniformly mixed; therefore, the effect of full contact reaction of the waste gas and the purified liquid is achieved, and the waste gas treatment effect and efficiency are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and particularly relates to a waste gas treatment device controlled by a PLC. Background Art

[0002] Waste gas treatment equipment mainly refers to an environmental protection equipment that uses different process technologies to recycle or remove and reduce the harmful components of the exhaust gas, so as to protect the environment and purify the air, and prevent our environment from being polluted.

[0003] For the authorized patent with the application number: CN202321866440.6, it discloses a waste gas treatment device for boilers. Its background art mentions the problem that "in actual use of the prior art, due to the lack of a monitoring device for the purified waste gas, the waste gas treatment device is prone to fluctuations during operation due to pollutants and the intake volume of waste gas. If the operating conditions of the waste gas treatment device are not adjusted in time, it is easy to affect the purification of the waste gas, resulting in exceeding the emission standards, and thus reducing the use effect of the waste gas treatment device". For this reason, the technical solution to solve this problem in this scheme is "including a purification unit, a pretreatment unit is arranged on the right side of the purification unit, a discharge pipe is communicated with the top of the purification unit, a monitoring unit is arranged in the inner cavity of the discharge pipe, a conveying unit is arranged on the left side of the purification unit, and the monitoring unit also includes a second support net, a sulfur dioxide sensor, a carbon dioxide sensor, an oxygen sensor, a soot concentration sensor, a nitric oxide sensor, and a waste gas flow rate sensor", etc.

[0004] However, it is found that the above technical solution has the following problems in the implementation of related technologies: Although it realizes the effect of monitoring waste gas through the provided technical solution, when it is used, it is not convenient to make the waste gas and the purification liquid fully contact and react. It makes the purification liquid and the waste gas contact and react by spraying, which easily leads to insufficient comprehensive contact between the waste gas and the purification liquid, resulting in the inability of the waste gas and the purification liquid to fully mix and react, thus increasing the treatment time and energy consumption of the waste gas, and further reducing the treatment effect and efficiency of the waste gas. For this reason, we provide a waste gas treatment device controlled by a PLC to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a waste gas treatment device controlled by a PLC, which solves the problem that it is not convenient to make the waste gas and the purification liquid fully contact and react in the existing one.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a waste gas treatment device controlled by a PLC, including: a base and a PLC controller;

[0008] A reaction chamber fixedly installed on one side of the top of the base, the PLC controller is fixedly installed on one side of the reaction chamber, a stirring shaft is rotatably connected between both sides of the inner wall of the reaction chamber, and two first synchronous pulleys are symmetrically and fixedly installed on the surface of the stirring shaft;

[0009] An L-shaped gas delivery pipe penetrating and installed on one side of the reaction chamber, the gas delivery pipe conveys waste gas into the reaction chamber through a pretreatment mechanism arranged on the other side of the top of the base, and a plurality of air holes are formed on the surface of the vertical section of the gas delivery pipe;

[0010] A rotating impeller rotatably connected in the gas delivery pipe, both ends of the rotating impeller movably pass through the gas delivery pipe and are fixedly connected with second synchronous pulleys, and the second synchronous pulleys and the first synchronous pulleys are tensioned and meshed with each other through a synchronous belt;

[0011] And a secondary treatment mechanism arranged in the reaction chamber.

[0012] The present utility model is further arranged such that the pretreatment mechanism includes a filter box fixedly installed on one side of the top of the base, an air inlet pipe fixedly installed on one side of the filter box, a connecting pipe fixedly installed at the bottom of the filter box, a fan fixedly installed at the bottom of the filter box and having an air inlet end connected to the connecting pipe, an air outlet end of the fan is connected to the gas delivery pipe, and the fan and the PLC controller are electrically connected to each other.

[0013] The pretreatment mechanism further includes a primary filter screen arranged in the filter box and a sealing sleeve arranged on the filter box and in contact with the primary filter screen. A notch is formed at the top of the filter box, the primary filter screen is slidably connected in the notch, the sealing sleeve is fixedly installed on the inner wall of the notch, and the sealing sleeve is made of rectangular rubber material.

[0014] The present utility model is further arranged such that the secondary treatment mechanism includes an activated carbon filter screen and a high-efficiency filter screen detachably installed in the reaction chamber from top to bottom in sequence, and a sealing cover hinged on the top of the reaction chamber, and the sealing cover is locked with the reaction chamber through a buckle.

[0015] The present utility model is further arranged such that an exhaust pipe is fixedly installed on the top of the sealing cover, a solenoid valve is arranged on the surface of the exhaust pipe, the solenoid valve and the PLC controller are electrically connected to each other, and a monitoring mechanism is arranged in the exhaust pipe.

[0016] The present utility model is further arranged such that the monitoring mechanism includes a fixing frame threadedly connected in the exhaust pipe, a plurality of sensors fixedly installed at the bottom of the fixing frame, an alarm and a display fixedly installed on one side of the reaction chamber from top to bottom in sequence, and the sensors, the alarm and the display are all electrically connected to the PLC controller bracket.

[0017] The utility model is further configured such that a drain pipe is fixedly installed at the bottom of one side of the reaction tank, and a valve is provided on the surface of the drain pipe.

[0018] The utility model has the following beneficial effects:

[0019] 1. During use, the preliminarily treated waste gas is input into the reaction tank through an air delivery pipe, so that the waste gas is input into the purification reactant in the reaction tank. During the air delivery process, the rotating impeller rotates to drive the synchronous pulley II at its end to rotate, and at the same time, the synchronous pulley I is driven to rotate through a synchronous belt, thereby driving the stirring shaft rod to rotate to stir the purification reactant, so that the waste gas and the purification liquid are uniformly mixed. Therefore, the effect of enabling the waste gas and the purification liquid to fully contact and react is achieved. Moreover, there is no need for an additional power source to stir the purification liquid, which reduces the use cost while ensuring environmental protection, and avoids the situation where the waste gas and the purification liquid cannot fully contact, resulting in an increase in the treatment time and energy consumption, effectively improving the waste gas treatment effect and efficiency.

[0020] 2. After the waste gas and the purification liquid react for a period of time, the solenoid valve is controlled by the PLC controller to open, so as to provide sufficient reaction time for the waste gas and the purification liquid. The reacted gas rises and is discharged, and the gas is filtered again through a high-efficiency filter screen. At the same time, the organic compounds and odors in the gas are adsorbed by the activated carbon filter screen, so that the gas is secondarily purified to meet the emission standards, which helps to protect human health and the environment and further improves the quality of waste gas treatment.

[0021] Of course, it is not necessary for any product implementing the utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a three-dimensional structure diagram of the present utility model.

[0024] Figure 2 It is a sectional three-dimensional structure diagram of the reaction tank of the present utility model.

[0025] Figure 3 It is a sectional three-dimensional structure diagram of the filter tank of the present utility model.

[0026] Figure 4 It is a sectional three-dimensional structure diagram of the exhaust pipe of the present utility model.

[0027] Figure 5 This is for the present utility model Figure 2 The enlarged three-dimensional structure schematic diagram at position A in it.

[0028] Figure 6 The electrical connection planar structure schematic diagram of the present utility model.

[0029] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0030] 100, base; 200, reaction tank; 300, stirring shaft rod; 400, first synchronous pulley; 500, gas transmission pipe; 600, pretreatment mechanism; 601, filter box; 602, intake pipe; 603, connecting pipe; 604, fan; 605, primary filter screen; 606, sealing sleeve; 700, rotating impeller; 800, second synchronous pulley; 900, secondary treatment mechanism; 901, activated carbon filter screen; 902, high-efficiency filter screen; 903, sealing cover; 1000, exhaust pipe; 1100, solenoid valve; 1200, monitoring mechanism; 1201, fixing bracket; 1202, sensor; 1203, alarm; 1204, display; 1300, drain pipe. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0032] Embodiment 1

[0033] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , which is the first embodiment of the present utility model. This embodiment provides an exhaust gas treatment device controlled by a PLC, including a base 100, a PLC controller and a reaction tank 200.

[0034] Specifically: it includes a base 100 and a PLC controller. A reaction tank 200 is fixedly installed on one side of the top of the base 100. The PLC controller is fixedly installed on one side surface of the reaction tank 200. A stirring shaft rod 300 is rotatably connected between the two sides of the inner wall of the reaction tank 200. Two first synchronous pulleys 400 are symmetrically and fixedly installed on the surface of the stirring shaft rod 300. Among them, two groups of stirring blades are symmetrically installed on the surface of the stirring shaft rod 300;

[0035] An L-shaped gas pipeline 500 is installed through one side of the reaction tank 200. The gas pipeline 500 conveys waste gas into the reaction tank 200 through a pretreatment mechanism 600 provided on the other side of the top of the base 100. A plurality of air holes are provided on the surface of the vertical section of the gas pipeline 500;

[0036] A rotating impeller 700 is rotatably connected inside the gas pipeline 500. Both ends of the rotating impeller 700 movably pass through the gas pipeline 500 and are fixedly connected with a second synchronous pulley 800. The second synchronous pulley 800 and the first synchronous pulley 400 are tensioned and meshed through a synchronous belt;

[0037] And a secondary treatment mechanism 900 provided inside the reaction tank 200.

[0038] The pretreatment mechanism 600 includes a filter box 601 fixedly installed on one side of the top of the base 100, an air inlet pipe 602 fixedly installed on one side of the filter box 601, a connecting pipe 603 fixedly installed at the bottom of the filter box 601, and a fan 604 fixedly installed at the bottom of the filter box 601 with its air inlet end connected to the connecting pipe 603. The air outlet end of the fan 604 is connected to the gas pipeline 500. The fan 604 is electrically connected to the PLC controller;

[0039] The pretreatment mechanism 600 further includes a primary filter screen 605 provided inside the filter box 601 and a sealing sleeve 606 provided on the filter box 601 and in contact with the primary filter screen 605. A notch is provided at the top of the filter box 601. The primary filter screen 605 is slidably connected in the notch. The sealing sleeve 606 is fixedly installed on the inner wall of the notch. Among them, the sealing sleeve 606 is made of rectangular rubber material, which can ensure the sealing between the notch and the primary filter screen 605.

[0040] The secondary treatment mechanism 900 includes an activated carbon filter screen 901 and a high-efficiency filter screen 902 (HEPA filter screen) detachably installed in the reaction tank 200 from top to bottom in sequence, and a sealing cover 903 hinged on the top of the reaction tank 200. Among them, the sealing cover 903 can be locked with the reaction tank 200 through a locking structure such as a buckle to ensure the connection stability between the two.

[0041] Specifically: An exhaust pipe 1000 is fixedly installed on the top of the sealing cover 903. An electromagnetic valve 1100 is provided on the surface of the exhaust pipe 1000. The electromagnetic valve 1100 is electrically connected to the PLC controller.

[0042] Specifically: A drain pipe 1300 is fixedly installed at the bottom of one side of the reaction tank 200. A valve is provided on the surface of the drain pipe 1300.

[0043] The operation process of this embodiment is as follows: When in use, the intake pipe 602 is connected to an external air supply pipe. Meanwhile, the PLC controller controls the blower 604 to start, and the waste gas is input into the filtration box 601 through the intake pipe 602. The primary filter screen 605 preliminarily filters the solid particle impurities contained in the waste gas. Then, the preliminarily treated waste gas is input into the reaction box 200 through the gas transmission pipe 500, and the waste gas enters the purification reactant in the reaction box 200 in the form of bubbling through the pores on the gas transmission pipe 500.

[0044] When the waste gas enters the gas transmission pipe 500, the rotating impeller 700 rotates under the influence of the air flow, and synchronously drives the second synchronous wheel 800 at its end to rotate. Meanwhile, under the action of the synchronous belt, the first synchronous wheel 400 is linked to rotate, thereby driving the stirring shaft rod 300 to rotate to stir the purification reactant, so that the waste gas and the purification liquid are evenly mixed, thus achieving the effect of fully contacting and reacting the waste gas and the purification liquid.

[0045] After the waste gas and the purification liquid react for a period of time, the PLC controller controls the solenoid valve 1100 to open to provide sufficient reaction time for the waste gas and the purification liquid. The reacted gas escapes from the purification liquid and rises, and the high-efficiency filter screen 902 re-filters some of the unpurified fine particles and microorganisms in the gas. Meanwhile, the activated carbon filter screen 901 adsorbs some of the unpurified volatile organic compounds and odors in the gas to purify the gas for the second time to protect the environment, and then it is discharged through the exhaust pipe 1000.

[0046] Finally, when the treatment is completed, the drain pipe 1300 is opened to discharge the purification liquid for treatment, and the sealing cover 903 is opened to disassemble and maintain the activated carbon filter screen 901 and the high-efficiency filter screen 902. New purification liquid is added, and the primary filter screen 605 is taken out for cleaning and maintenance.

[0047] Embodiment Two

[0048] Referring to Figure 1 、 Figure 4 and Figure 6 , this is the second embodiment of the present utility model. This embodiment is based on the previous embodiment. The difference is that it can monitor the indicators of the gas discharged after treatment, so as to better implement the present utility model.

[0049] Specifically: There is a monitoring mechanism 1200 in the exhaust pipe 1000. The monitoring mechanism 1200 includes a fixing bracket 1201 threadedly connected in the exhaust pipe 1000, a plurality of sensors 1202 fixedly installed at the bottom of the fixing bracket 1201, an alarm 1203 and a display 1204 fixedly installed on one side of the reaction box 200 from top to bottom in sequence. The sensors 1202, the alarm 1203, and the display 1204 are all electrically connected to the PLC controller bracket.

[0050] The operation process of this embodiment is as follows: when the processed gas is discharged to the outside through the exhaust pipe 1000, various indicators in the gas can be monitored by multiple sensors 1202. At the same time, the monitoring results are fed back to the PLC controller, and after being integrated by the PLC controller, the monitoring results are fed back to the display 1204 for display, so as to facilitate viewing by personnel. If the monitoring results exceed the preset value, the PLC controller controls the alarm 1203 to issue an alarm to remind the staff. At the same time, the PLC controller controls the solenoid valve 1100 and the fan 604 to close, so that the personnel can check and adjust the operation status of the device in time, thereby reducing the gas emission and avoiding environmental pollution.

[0051] It should be noted that the models of the multiple sensors 1202 are not of the same type, but of various different types, such as sulfur dioxide sensors, soot concentration sensors, VOC sensors (PID gas sensors), etc. There is no specific limitation here. Those skilled in the art can select and use according to the monitoring requirements. Moreover, the sensors used for monitoring gases are well-known prior arts in this field, and their principle structures will not be elaborated too much here.

[0052] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A PLC-controlled waste gas treatment device, characterized in that: include: Base (100) and PLC controller; A reaction box (200) is fixedly mounted on one side of the top of the base (100), the PLC controller is fixedly mounted on one side of the reaction box (200), a stirring shaft (300) is rotatably connected between two sides of the inner wall of the reaction box (200), and two synchronous wheels (400) are symmetrically fixedly mounted on the surface of the stirring shaft (300); An L-shaped gas delivery pipe (500) is installed through one side of the reaction box (200), and the gas delivery pipe (500) delivers waste gas to the reaction box (200) through a pretreatment mechanism (600) arranged on the other side of the top of the base (100), and a plurality of air holes are opened on the surface of the vertical section of the gas delivery pipe (500); A rotating impeller (700) is rotatably connected to the gas transmission pipe (500), both ends of the rotating impeller (700) are movable through the gas transmission pipe (500) and are fixedly connected to a second synchronous wheel (800), and the second synchronous wheel (800) and the first synchronous wheel (400) are connected in a tensioned meshing manner via a synchronous belt; And a secondary processing mechanism (900) disposed in the reaction box (200).

2. A PLC-controlled waste gas treatment device according to claim 1, characterized in that: The pretreatment mechanism (600) comprises a filter box (601) fixedly mounted on one side of the top of the base (100), an air inlet pipe (602) fixedly mounted on one side of the filter box (601), a connecting pipe (603) fixedly mounted on the bottom of the filter box (601), and a fan (604) fixedly mounted on the bottom of the filter box (601) and having an air inlet end connected to the connecting pipe (603); an air outlet end of the fan (604) is connected to the air supply pipe (500); and the fan (604) is electrically connected to a PLC controller.

3. A PLC-controlled waste gas treatment device according to claim 2, characterized in that: The pretreatment mechanism (600) further comprises a primary filter screen (605) arranged in the filter box (601) and a sealing sleeve (606) arranged on the filter box (601) and in contact with the primary filter screen (605); a slot is provided on the top of the filter box (601); the primary filter screen (605) is slidably connected in the slot; the sealing sleeve (606) is fixedly mounted on the inner wall of the slot; and the sealing sleeve (606) is made of a rectangular rubber material.

4. A PLC-controlled waste gas treatment device according to claim 1, characterized in that: The secondary treatment mechanism (900) comprises an activated carbon filter (901) and a high-efficiency filter (902) which are detachably installed in the reaction box (200) from top to bottom, and a sealing cover (903) hinged on the top of the reaction box (200), wherein the sealing cover (903) is locked with the reaction box (200) by a buckle.

5. A PLC-controlled waste gas treatment device according to claim 4, characterized in that: An exhaust pipe (1000) is fixedly mounted on the top of the sealing cover (903), a solenoid valve (1100) is provided on the surface of the exhaust pipe (1000), the solenoid valve (1100) is electrically connected to a PLC controller, and a monitoring mechanism (1200) is provided in the exhaust pipe (1000).

6. A PLC-controlled waste gas treatment device according to claim 5, characterized in that: The monitoring mechanism (1200) comprises a fixing frame (1201) threadedly connected to the exhaust pipe (1000), a plurality of sensors (1202) fixedly mounted on the bottom of the fixing frame (1201), and an alarm (1203) and a display (1204) fixedly mounted on a side of the reaction box (200) in order from top to bottom. The sensor (1202), the alarm (1203) and the display (1204) are all electrically connected to a PLC controller bracket.

7. The PLC-controlled waste gas treatment equipment according to claim 1, characterized in that: A drain pipe (1300) is fixedly installed at the bottom of one side of the reaction box (200), and a valve is provided on the surface of the drain pipe (1300).

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