CN219942486U - Stirring mechanism and desulfurization defoaming agent adding device - Google Patents

Abstract

The utility model relates to the technical field of boiler desulfurization equipment, in particular to a stirring mechanism and a desulfurization defoaming agent adding device, which comprises a stirrer, wherein the stirrer comprises a lower fan blade, an upper fan blade, a lower connecting column, an upper connecting column, a first rotating rod and a second rotating rod, wherein the lower fan blade and the upper fan blade are arranged at the end part of the lower fan blade, the upper connecting column is arranged at the end part of the upper fan blade, the first rotating rod is arranged on the inner wall of the lower connecting column, the second rotating rod is sleeved on the outer wall of the first rotating rod, the stirring efficiency is improved and the stirring efficiency is improved, the stirring mechanism is more convenient to replace, and the problem that the labor intensity is high, the time is consumed, the using dosage of the defoaming agent cannot be controlled as required, the defoaming agent consumption is caused, and the desulfurization running cost is increased can be solved by arranging a defoaming agent storage tank, a defoaming agent diluent storage tank and a desulfurization process water pipeline.

Description

Stirring mechanism and desulfurization defoaming agent adding device

Technical Field

The utility model relates to the technical field of boiler desulfurization equipment, in particular to a stirring mechanism and a desulfurization and defoaming agent adding device.

Background

In the operation of the limestone wet desulfurization system, due to the change of the combustion working condition of the boiler and the quality change of limestone raw materials, the organic matter content in the slurry can be gradually increased and the concentration of chloride ions and magnesium ions can be continuously increased along with the long-time circulation of the slurry in the absorption tower. Insoluble gas in the flue gas is surrounded by liquid to form a gas-liquid interface, the gas-liquid interface is contracted into a large number of small spherical bubbles under the action of surface tension, the bubbles rise to the liquid level under the action of density difference, and a large number of bubbles rise to the liquid level to form foam. Because the thick liquid foams, the absorption tower liquid level can't the accurate feedback, and the more bubble that the absorption tower appears "false liquid level" phenomenon promptly, the thick liquid surface gathers, the tension on thick liquid surface is just big for the bubble, and the bubble is difficult for breaking, and then causes the foam layer thickening, and false liquid level is more serious to lead to foam, thick liquid to overflow from the overflow pipe, pollute the environment. Under severe conditions, the foam is enriched at the emptying port of the overflow pipe to isolate the atmosphere, SO that a siphon phenomenon of the slurry in the absorption tower is formed, the gas-liquid balance of the absorption tower is damaged, the desulfurization circulating pump is cavitation-eroded, the emission of SO2 in clean flue gas exceeds the standard, and the slurry overflows out of the absorption tower to cause secondary pollution and other faults.

When the desulfurization tower foams and overflows, operators need to manually add the defoamer medicine barrel into the pit of the absorption tower on site, and the defoamer medicine barrel is pumped into the absorption tower by the pit pump. Under the condition of fault or overhaul of the pit pump, the defoamer can be added only by a mode of a public area filtrate water tank and the like. Because the general equipment distribution range in desulfurization absorption tower area is wider, the absorption tower pit interval is farther, this kind of addition mode is not only wasted time and energy, the process is loaded down with trivial details, and there is the potential safety hazard in addition, if absorption tower thick liquid foaming is serious, overflow is frequent, need add the defoaming agent or can not in time add when the overflow takes place, this kind of addition mode intensity of labour is big, consuming time, and can not control the dose of using of defoaming agent as required, cause the defoaming agent to consume, and desulfurization running cost increases and when output is big, the agitator can be in high-power operation state in the defoaming agent diluent, can lead to the agitator ageing for a long time, when the agitator high-power operation in prior art, the engineering quantity is huge and inconvenient to change, propose one kind increase stirring efficiency and more be convenient for change's rabbling mechanism here.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

In view of the above prior art, the present utility model has been proposed with a great amount of engineering and inconvenience in replacement when the stirrer is operated at high power.

It is therefore an object of the present utility model to provide a stirring mechanism.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a rabbling mechanism, its includes, the agitator, includes that lower flabellum and last flabellum are located lower spliced pole of lower flabellum tip, locate go up the spliced pole of flabellum tip, locate the first bull stick of lower spliced pole inner wall and cover are located the second bull stick of first bull stick outer wall.

As a preferred embodiment of the stirring mechanism of the present utility model, wherein: the limiting groove, the sliding groove and the connecting groove are respectively formed in the inner side of the lower connecting column, the connecting groove is movably connected with the first rotating rod, the clamping groove is formed in the outer side of the first rotating rod, and the limiting block is movably connected with the inner side of the sliding groove.

As a preferable scheme of the stirring mechanism, the outer wall of the limiting block is provided with a limiting column, and the outer wall of the limiting block is provided with an elastic piece.

As a preferred embodiment of the stirring mechanism of the present utility model, wherein: the outer wall of the first rotating rod is provided with a first fixed table, the outer wall of the second rotating rod is provided with a second fixed table, one side of the first fixed table is provided with a first driven gear, one side of the second fixed table is provided with a second driven gear, one side of the first driven gear and one side of the second driven gear are in meshed connection with a driving gear, the outer side of the driving gear is fixedly connected with a transmission shaft, and the outer side of the transmission shaft is provided with a fixing frame.

As a preferred embodiment of the stirring mechanism of the present utility model, wherein: and a motor is arranged on one side of the transmission shaft.

One of the beneficial effects of the utility model is that: according to the utility model, the lower fan blade, the upper fan blade, the first rotating rod, the second rotating rod, the limiting block, the limiting post and the clamping groove formed in the first rotating rod are arranged, and the limiting groove, the sliding groove, the connecting groove, the limiting block in the connecting groove and the elastic piece are formed in the inner side of the lower connecting post, so that the stirring efficiency can be increased, and the stirring device is more convenient to replace.

In view of the fact that in the practical use process, the general equipment distribution range of the desulfurization absorption tower area is wider, the pit interval of the absorption tower is farther, the adding mode is time-consuming and labor-consuming, the process is complicated, potential safety hazards exist, such as severe foaming of the slurry of the absorption tower, frequent overflow, the defoaming agent needs to be added for many times or the defoaming agent cannot be added in time when overflow occurs, the labor intensity of the adding mode is high, time is consumed, the using dosage of the defoaming agent cannot be controlled according to the requirement, the defoaming agent is consumed, and the problem that the desulfurization operation cost is increased is solved.

In order to solve the technical problems, the utility model also provides the following technical scheme: the desulfurization component comprises a desulfurization filtrate water tank, a water pump arranged on the outer side of the desulfurization filtrate water tank, a desulfurization absorption tower, a main pipe of the absorption tower from the filtrate water pump to the absorption tower and an absorption tower pit arranged on the outer side of the desulfurization absorption tower. The defoaming agent active adding assembly comprises a defoaming agent storage box, a defoaming agent diluent storage box and a desulfurization process water pipeline arranged on one side of the defoaming agent diluent storage box.

As a preferable scheme of the desulfurizing and antifoaming agent adding device, the desulfurizing and antifoaming agent adding device comprises the following components: the desulfurization filtrate water tank one end termination has to other absorption tower filtrate water piping, desulfurization filtrate water tank with the water pump is linked together, the water pump with filtrate water pump is connected to absorption tower main pipe, filtrate water pump is connected to absorption tower filtrate water valve and with desulfurization absorption tower main pipe one side is connected to.

As a preferable scheme of the desulfurizing and antifoaming agent adding device, the desulfurizing and antifoaming agent adding device comprises the following components: the desulfurization absorption tower is characterized in that an absorption tower middle pressure measuring sensor is arranged inside the desulfurization absorption tower, an absorption tower overflow pipe is connected to the outside of the desulfurization absorption tower, an absorption tower overflow pipe flow measuring sensor and an absorption tower overflow pipe temperature sensor are arranged in the absorption tower overflow pipe, and the tail end of the absorption tower overflow pipe is communicated with the absorption tower pit.

As a preferable scheme of the desulfurizing and antifoaming agent adding device, the desulfurizing and antifoaming agent adding device comprises the following components: the defoaming agent storage box set up in defoaming agent diluent storage box top, defoaming agent storage box inside is equipped with the slope, defoaming agent storage box outside pipeline is equipped with the control valve, the control valve is located between defoaming agent diluent storage box and the defoaming agent storage box.

As a preferable scheme of the desulfurizing and antifoaming agent adding device, the desulfurizing and antifoaming agent adding device comprises the following components: the end part of the defoamer diluent storage box is connected with a desulfurization process water pipeline, a defoamer diluent storage box water supplementing control valve is arranged on the desulfurization process water pipeline, and a stirrer and a liquid level meter are respectively arranged in the defoamer diluent storage box.

The utility model has the other beneficial effects that: the automatic addition of the desulfurization defoaming agent can be realized by arranging the defoaming agent storage box, the defoaming agent diluent storage box and the desulfurization process water pipeline, so that the problems of high labor intensity, time consumption, incapability of controlling the using dosage of the defoaming agent according to the requirement, defoaming agent consumption and increased desulfurization operation cost are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 is a schematic diagram of the whole structure of the stirring mechanism in the utility model.

Fig. 2 is an enlarged view of a lower connecting column part in the present utility model.

Fig. 3 is a schematic cross-sectional view of the first rotating rod in the present utility model.

Fig. 4 is a schematic structural view of the present utility model.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1-3, a first embodiment of the present utility model provides a stirring mechanism, in which a lower fan blade 102 of an upper fan blade 101, a first rotating rod 101a, a clamping groove 101a formed in the lower rotating rod, a limit groove 101c formed in the inner side of a lower connecting column, a chute 101b-1, a connecting groove 101b-2, a limit block 103 in the lower connecting column, a limit column 103a and an elastic member 103b are provided, so that when the stirrer operates at high power, the engineering amount is large, and when the stirrer is inconvenient to replace, the stirring efficiency is improved and the stirrer is more convenient to replace

Specifically, the stirrer 100 includes a lower fan blade 101, an upper fan blade 102, a lower connecting column 101b disposed at an end portion of the lower fan blade 101, an upper connecting column 102b disposed at an end portion of the upper fan blade 102, a first rotating rod 101a disposed on an inner wall of the lower connecting column 101b, and a second rotating rod 102a sleeved on an outer wall of the first rotating rod 101 a. The inner side of the lower connecting column 101b is provided with a limit groove 101c, a sliding groove 101b-1 and a connecting groove 101b-2 respectively, the connecting groove 101b-2 is movably connected with the first rotating rod 101a, the outer side of the first rotating rod 101a is provided with a clamping groove 101a-1, and the inner side of the sliding groove 101b-1 is movably connected with a limit block 103. The outer wall of the limiting block 103 is provided with a limiting post 103a, and the outer wall of the limiting block 103 is provided with an elastic piece 103b. The outer wall of the first rotating rod 101a is provided with a first fixed table 106a, the outer wall of the second rotating rod 102a is provided with a second fixed table 106b, one side of the first fixed table 106a is provided with a first driven gear 104, one side of the second fixed table 106b is provided with a second driven gear 105, one side of the first driven gear 104 and one side of the second driven gear 105 are connected with a driving gear 107 in a meshed manner, the outer side of the driving gear 107 is fixedly connected with a transmission shaft 107a, and the outer side of the transmission shaft 107a is provided with a fixing frame 106. A motor 108 is provided on one side of the transmission shaft 107 a.

The second rotating rod 102a is a hollow rotating rod, and is sleeved outside the first rotating rod 101a, the first rotating rod 101a can rotate independently in the second rotating rod 102a, the upper connecting column 102b is provided with four limiting grooves 101c, sliding grooves 101b-1, connecting grooves 101b-2, limiting blocks 103, limiting columns 103a and elastic pieces 103b which are the same as those in the connecting column 101b, and the elastic pieces 103b are uniformly distributed in the lower connecting column 101b and the upper connecting column 102 b.

To sum up, when the lower fan blade 101 is replaced, the limiting column 103a is pulled in the direction of the limiting groove 101c approaching the first rotating rod 101a, and then the limiting rod 103a is rotated, at this time, due to the fact that the elastic piece 103b is changed from the compressed state to the original state, elastic force is applied to the direction of the limiting block 103 away from the first rotating rod 101a, so that the limiting block 103 slides in the sliding groove 101b-1, the limiting rod 103a is driven to move away from the first rotating rod 101a, the limiting block 103 is separated from the clamping groove 101a-1, at this time, the lower fan blade 101 and the connecting column 101b connected to the lower fan blade 101 slide in the connecting groove 101b-2 along the gravity direction, when the stirrer 100 stirs, the driving gear 107 is driven to rotate by the driving of the first driven gear 104 and the second driven gear 105 through the driving of the motor 108, the first driven gear 104 and the second driven gear 105 rotate in opposite directions, and then the lower fan blade 101 connected to the first driven gear 104 and the upper fan blade 102 connected to the second driven gear are driven to rotate in opposite directions, so that the stirrer 100 is more convenient to replace.

Example 2

Referring to fig. 1 to 4, for the second embodiment of the present utility model, unlike the previous embodiment, this embodiment provides a desulfurizing and defoaming agent adding apparatus.

Specifically, desulfurization subassembly 200 includes desulfurization filtrate water tank 201, locate the water pump 201a in desulfurization filtrate water tank 201 outside, desulfurization absorption tower 202, filtrate water pump to absorber main pipe 203 and locate the absorber pit 204 in desulfurization absorption tower 202 outside, defoaming agent initiative interpolation subassembly 300, including defoaming agent storage box 301, defoaming agent diluent storage box 302 and locate the desulfurization process water pipeline 304 of defoaming agent diluent storage box 302 one side, desulfurization absorption tower 202 inside is equipped with absorber middle part pressure measurement sensor 202b, the absorption tower overflow pipe 202e has been connect to the outside of desulfurization absorption tower 202, be equipped with absorber overflow pipe flow measurement sensor 202c and absorber overflow pipe temperature sensor 202d in the absorber overflow pipe 202e, absorber overflow pipe 202e end and absorber pit 204 intercommunication.

Wherein, the upper end of the desulfurization filtrate water tank 201 is provided with a filtrate water pipeline leading to other absorption towers and a filtrate water valve 202a of the absorption tower, which is opened during desulfurization operation, and an absorption tower pit 204 is positioned below the desulfurization absorption tower 202.

In summary, when desulfurization is performed, chemical reagents in the desulfurization filtrate water tank 201 enter the filtrate water pump through the filtrate water pump 201a01a to the main pipe 203 of the absorption tower, and at this time, the filtrate water valve 202a of the absorption tower is opened, the chemical reagents in the desulfurization filtrate water tank 201 enter the desulfurization absorption tower 202 through a pipeline, and harmful gases are subjected to harmless treatment through a series of chemical reactions.

Example 3

Referring to fig. 4, in a third embodiment of the present utility model, the present utility model is based on the previous embodiment, except that the present embodiment provides a desulfurizing and defoaming agent adding apparatus, and automatic adding of desulfurizing and defoaming agent can be achieved by providing a defoaming agent storage tank 301, a defoaming agent diluent storage tank 302, and a desulfurizing process water line 304, so that the problems of high labor intensity, time consumption, inability to control the dosage of the defoaming agent as required, resulting in defoaming agent consumption, and increased desulfurizing operation cost are solved.

Specifically, the defoamer storage tank 301 is disposed above the defoamer diluent storage tank 302, a slope 301a is disposed inside the defoamer storage tank 301, a control valve 301b is disposed on an outer pipe of the defoamer storage tank 301, and the control valve 301b is disposed between the defoamer diluent storage tank 302 and the defoamer storage tank 301. The end of the foam concentrate storage tank 302 is connected with a desulfurization process water pipeline 304, a foam concentrate storage tank water supplementing control valve 304a is arranged on the desulfurization process water pipeline 304, and the foam concentrate storage tank 302 is respectively provided with a stirrer 100 and a liquid level meter 302a.

Wherein, the defoamer for the desulfurization absorption tower is stored in a defoamer storage tank 301, enters a defoamer diluent storage tank 302 through a control valve 301b according to the use requirement, and a defoamer diluent storage tank water supplementing control valve 304a is connected with a desulfurization process water pipeline 304 and supplements water to the defoamer diluent storage tank 302 to prepare defoamer diluent; after the slurry bubbling overflow phenomenon occurs in the absorption tower, the bubbling overflow condition is judged to be met through the pressure measuring sensor 202b in the middle of the absorption tower, the flow measuring sensor 202c of the overflow pipe of the absorption tower and the temperature sensor 202d of the overflow pipe of the absorption tower, the defoamer diluent is added into the filtrate water mother pipe through the metering pump 303, the regulating valve 303a, the flowmeter 305 and the one-way valve 306, and is added into the slurry in the absorption tower through the filtrate water valve 202a of the absorption tower or the filtrate water pipeline 205 of other absorption towers.

Preferably, the bottom of the defoamer storage tank 301 is connected with the control valve 301b and the defoamer diluent storage tank 302 through stainless steel pipelines, the installation height of the defoamer storage tank 301 is larger than that of the defoamer diluent storage tank 302, the defoamer liquid enters the defoamer diluent storage tank 302 in a gravity flow mode, and the control valve 301b is used for controlling the adding amount of the defoamer.

Preferably, the above-described defoamer diluent storage tank 302 is equipped with a stirrer 100 to prevent the defoamer from precipitating and condensing while acting on the defoamer to mix with the process water; the defoamer diluent storage tank 302 is fitted with a level gauge 302a to measure the defoamer diluent storage tank 302 level in real time.

Preferably, the water supply pipeline desulfurization process water pipeline 304 is connected to an original process water pipeline of the desulfurization area.

Preferably, the metering pump 303, the regulating valve 303a, the flowmeter 305 and the one-way valve 306 are connected to the filtrate pump 201a to the main pipe of the absorption tower through stainless steel pipelines; the metering pump 303, the regulating valve 303a and the flowmeter 305 are connected to the original desulfurization DCS control system in a remote control mode to realize remote control; because the filtrate jellyfish pipe line pressure is higher than the defoamer diluent pipe line pressure, the check valve 306 is installed unidirectionally to the filtrate jellyfish pipe, preventing the defoamer diluent from flowing backwards.

Preferably, the above-mentioned bubble overflow measurement and control unit is provided with the absorber overflow pipe flow measurement sensor 202c and the absorber overflow pipe temperature sensor 202d at a position 5m above the outlet of the absorber pit 204 in a vertical direction from the top to the bottom of the absorber overflow pipe 202 e.

Preferably, the above-mentioned bubbling overflow measurement and control unit is connected to the desulfurization DCS system after data acquisition of the pressure measurement sensor 202b in the middle of the absorption tower, the flow measurement sensor 202c in the overflow pipe of the absorption tower, and the temperature sensor 202d in the overflow pipe of the absorption tower, and adds the dosage of the defoaming agent to the absorption tower according to the temperature and flow of the slurry flowing through the overflow pipe of the absorption tower, the metering pump 303, and the regulating valve 303 a.

To sum up, the defoamer is stored in the defoamer storage tank 301, and the defoamer flows into the defoamer diluent storage tank 302 by gravity for standby. After the slurry overflows from the absorption tower, because the slurry temperature of the absorption tower is about 60 ℃, the slurry signals are measured by the flow measuring sensor 202c of the overflow pipe of the absorption tower and the temperature sensor 202d of the overflow pipe of the absorption tower and then transmitted to the desulfurization DCS system, and the desulfurization DCS system sends out instructions of opening the regulating valve 303a and starting the metering pump 303 and judges the overflow condition according to the flow measuring sensor 202c of the overflow pipe of the absorption tower and the temperature sensor 202d of the overflow pipe of the absorption tower, and the opening of the regulating valve 303a is larger as the temperature and the flow are higher. When the overflow slurry flow measuring sensor 202c and the overflow pipe temperature sensor 202d of the absorption tower detect that the overflow slurry signal disappears, the regulating valve 303a is closed, and the metering pump 303 is stopped, so that the automatic addition of the desulfurizing and absorbing tower defoamer is realized. Meanwhile, the condition that the slurry in the absorption tower foams but does not reach the overflow port can be judged by using the pressure measuring sensor 202b in the middle of the absorption tower, when the pressure measured by the pressure measuring sensor 202b in the middle of the absorption tower is higher than the set value of 7KPa, the desulfurization DCS system sends out an instruction for opening the regulating valve 303a and starts the metering pump 303, when the pressure measured by the pressure measuring sensor 202b in the middle of the absorption tower is lower than the set value of 3KPa, the desulfurization DCS system sends out an instruction for closing the regulating valve 303a and stops the metering pump 303, and one-time addition procedure is completed.

It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (10)

1. A stirring mechanism, characterized in that: comprising the steps of (a) a step of,

the stirrer (100) comprises a lower fan blade (101) and an upper fan blade (102), wherein the lower fan blade (101) and the upper fan blade (102) are arranged on a lower connecting column (101 b) at the end part of the lower fan blade (101), an upper connecting column (102 b) arranged at the end part of the upper fan blade (102), a first rotating rod (101 a) arranged on the inner wall of the lower connecting column (101 b) and a second rotating rod (102 a) sleeved on the outer wall of the first rotating rod (101 a).

2. The stirring mechanism of claim 1, wherein: limiting grooves (101 c), sliding grooves (101 b-1) and connecting grooves (101 b-2) are respectively formed in the inner sides of the lower connecting columns (101 b), the connecting grooves (101 b-2) are movably connected with the first rotating rods (101 a), clamping grooves (101 a-1) are formed in the outer sides of the first rotating rods (101 a), and limiting blocks (103) are movably connected with the inner sides of the sliding grooves (101 b-1).

3. The stirring mechanism of claim 2, wherein: the outer wall of the limiting block (103) is provided with a limiting column (103 a), and the outer wall of the limiting block (103) is provided with an elastic piece (103 b).

4. A stirring mechanism as claimed in claim 3, wherein: the outer wall of the first rotating rod (101 a) is provided with a first fixed table (106 a), the outer wall of the second rotating rod (102 a) is provided with a second fixed table (106 b), one side of the first fixed table (106 a) is provided with a first driven gear (104), one side of the second fixed table (106 b) is provided with a second driven gear (105), one side of the first driven gear (104) and one side of the second driven gear (105) are in meshed connection with a driving gear (107), the outer side of the driving gear (107) is fixedly connected with a transmission shaft (107 a), and the outer side of the transmission shaft (107 a) is provided with a fixing frame (106).

5. The stirring mechanism of claim 4, wherein: and a motor (108) is arranged on one side of the transmission shaft (107 a).

6. The utility model provides a desulfurization defoamer adds device which characterized in that: comprising the stirring mechanism according to any one of claims 1 to 5, and,

the desulfurization assembly (200) comprises a desulfurization filtrate water tank (201), a water pump (201 a) arranged on the outer side of the desulfurization filtrate water tank (201), a desulfurization absorption tower (202), a main pipe (203) for pumping filtrate into the absorption tower and an absorption tower pit (204) arranged on the outer side of the desulfurization absorption tower (202); the method comprises the steps of,

the defoaming agent active adding assembly (300) comprises a defoaming agent storage box (301), a defoaming agent diluent storage box (302) and a desulfurization process water pipeline (304) arranged on one side of the defoaming agent diluent storage box (302).

7. The desulfurization and defoaming agent addition device according to claim 6, wherein: one end of the desulfurization filtrate water tank (201) is connected with a filtrate water pipeline (205) of other absorption towers, the desulfurization filtrate water tank (201) is communicated with a water pump (201 a), the water pump (201 a) is connected with a filtrate water pump to an absorption tower main pipe (203), and one side of the filtrate water pump to the absorption tower main pipe (203) is connected to a filtrate water valve (202 a) of the absorption tower and is communicated with the desulfurization absorption tower (202).

8. The desulfurization and defoaming agent addition device according to claim 7, wherein: the desulfurization absorption tower (202) is internally provided with an absorption tower middle pressure measurement sensor (202 b), an absorption tower overflow pipe (202 e) is connected to the outside of the desulfurization absorption tower (202), an absorption tower overflow pipe flow measurement sensor (202 c) and an absorption tower overflow pipe temperature sensor (202 d) are arranged in the absorption tower overflow pipe (202 e), and the tail end of the absorption tower overflow pipe (202 e) is communicated with the absorption tower pit (204).

9. The desulfurization and defoamer addition device of claim 8, wherein: the defoaming agent storage box (301) set up in defoaming agent diluent storage box (302) top, defoaming agent storage box (301) inside is equipped with slope (301 a), defoaming agent storage box (301) outside pipeline is equipped with control valve (301 b), control valve (301 b) are located between defoaming agent diluent storage box (302) and defoaming agent storage box (301).

10. The desulfurization and defoamer addition device of claim 9, wherein: the end part of the defoamer diluent storage box (302) is connected with a desulfurization process water pipeline (304), a defoamer diluent storage box water supplementing control valve (304 a) is installed on the desulfurization process water pipeline (304), and a stirrer (100) and a liquid level meter (302 a) are respectively arranged in the defoamer diluent storage box (302).