CN220951384U - Carbon source adding device - Google Patents

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly discloses a carbon source adding device which comprises a base, a conveying mechanism, a stirring mechanism, a conveying mechanism and a control cabinet. The conveying mechanism is communicated with the stirring mechanism, and the carbon source solution is added into the sewage treatment equipment through the conveying mechanism, so that automatic addition of the carbon source is realized, manual work is replaced, and labor intensity is reduced. And the carbon source adding device has compact structure and small occupied area, can be remotely controlled in a networking way, and does not need to be attended by people.

Description

Carbon source adding device

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a carbon source adding device.

Background

The rural decentralized sewage treatment facility needs to periodically add carbon sources in the operation process so as to ensure that the effluent quality is stable and reaches the standard. Before adding the carbon source, the solid carbon source is dissolved by adding water before being added into the sewage treatment facility. At present, the existing sewage treatment facilities do not have the function of automatically putting carbon sources, and usually, workers are required to get to the site for preparation, or the prepared liquid carbon sources are transported to the site and then put manually, so that the workers are required to frequently get to the site for operation, and the time cost and the labor cost are high.

Therefore, a carbon source adding device is needed to solve the above problems.

Disclosure of utility model

The utility model aims to provide a carbon source adding device which can realize automatic and periodic carbon source adding, reduce the operating frequency of staff and reduce the time cost and the labor cost.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a carbon source adding device, which comprises:

the base is provided with a support column;

The conveying mechanism is arranged on the support column, a plurality of movable hanging points are arranged on the conveying mechanism, a carbon bag is hung at each hanging point, and a solid carbon source is arranged in each carbon bag;

The stirring mechanism is arranged on the base and is positioned below the conveying mechanism, the conveying mechanism drives the hanging point to pass through the stirring mechanism periodically, the solid carbon source in the carbon bag is added into the stirring mechanism, a water source is introduced into the stirring mechanism, and the stirring mechanism is used for dissolving the solid carbon source in the water source to form a carbon source solution;

The conveying mechanism is communicated with the stirring mechanism and is used for adding the carbon source solution into sewage treatment equipment;

And the control cabinet is arranged on the support column and is in communication connection with the conveying mechanism, the stirring mechanism and the conveying mechanism.

Optionally, the stirring mechanism includes:

The top of the stirring barrel is provided with a feed inlet and a water inlet pipe, the solid carbon source is added into the stirring barrel through the feed inlet, the water source is added into the stirring barrel through the water inlet pipe, the water inlet pipe is provided with a water pump, the bottom of the stirring barrel is provided with a discharge outlet, and the discharge outlet is communicated with the conveying mechanism;

Stirring vane is located in the stirring barrel and is in transmission connection with stirring motor, and the stirring motor drives stirring vane rotates in the stirring barrel so as to mix the water source with the solid carbon source to form the carbon source solution.

Optionally, the stirring barrel is provided with a liquid level sensor, the liquid level sensor is used for detecting the liquid level height in the stirring barrel, and the liquid level sensor is in communication connection with the control cabinet.

Optionally, the conveying mechanism includes:

The mounting frame is positioned above the stirring barrel;

The sliding rail is arranged on the mounting frame and is annular, a plurality of pulley lifting hooks are arranged on the sliding rail and can move circularly along the sliding rail, the pulley lifting hooks are connected through chains, each pulley lifting hook is a hanging point, and the carbon bag is hung on the pulley lifting hook;

the driving assembly is arranged on the mounting frame and is in transmission connection with the chain, and the driving assembly is used for driving the chain to move.

Optionally, the drive assembly includes driving motor, driving gear and driven gear, driving motor with the driving gear is connected, the chain cover is located the driving gear with driven gear.

Optionally, the sliding rail comprises a conveying section and a blanking section, the blanking section is located above the feeding port, the blanking section is in a V shape, the highest point of the blanking section and the conveying section are located at the same horizontal height, and the lowest point of the blanking section is lower than the horizontal height of the conveying section;

the feeding port is provided with a blade, the cutting edge of the blade faces the sliding rail, and when the carbon bag moves to the blanking section along the sliding rail, the blade cuts the carbon bag so that the solid carbon source is scattered from the carbon bag into the stirring barrel.

Optionally, a limiting guide rail is arranged between the sliding rail and the stirring barrel, the shape of the limiting guide rail is the same as that of the sliding rail, and the limiting guide rail is located right below the sliding rail.

Optionally, a limit switch is arranged at a position on the limit guide rail corresponding to the lowest point of the blanking section, and the limit switch is in communication connection with the control cabinet.

Optionally, the conveying mechanism comprises a conveying pipeline, an electromagnetic valve and a dosing pump, wherein two ends of the conveying pipeline are respectively communicated with the discharge port and the sewage treatment equipment, the electromagnetic valve and the dosing pump are arranged on the conveying pipeline, and the electromagnetic valve is positioned at the upstream of the dosing pump.

Optionally, be equipped with a plurality of gag levers on the base, a plurality of the gag lever levers enclose to establish and form the installation position, the installation position is used for placing the agitator.

The beneficial effects of the utility model are as follows:

The utility model provides a carbon source adding device which comprises a base, a conveying mechanism, a stirring mechanism, a conveying mechanism and a control cabinet, wherein a carbon bag can be moved to the upper part of the stirring mechanism through the conveying mechanism so as to add a solid carbon source into the stirring mechanism, the solid carbon source can be dissolved in a water source through the stirring mechanism to form a carbon source solution, and the conveying mechanism and the stirring mechanism are used according to the actual situation of a site, so that the carbon source is easy to prepare and is prevented from deteriorating. The conveying mechanism is communicated with the stirring mechanism, and the carbon source solution is added into the sewage treatment equipment through the conveying mechanism, so that automatic addition of the carbon source is realized, manual work is replaced, and labor intensity is reduced. And the carbon source adding device has compact structure and small occupied area, can be remotely controlled in a networking way, and does not need to be attended by people.

Drawings

FIG. 1 is a front view of a carbon source adding device provided in an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a left side view of a carbon source adding device provided in an embodiment of the present utility model;

FIG. 4 is a top view of a carbon source dosing device provided in an embodiment of the present utility model;

FIG. 5 is a front view of an agitation mechanism provided in an embodiment of the present utility model;

fig. 6 is a top view of an agitation mechanism provided in an embodiment of the present utility model.

In the figure:

10. a carbon bag;

100. a base; 110. a support post; 120. a limit rod;

200. A conveying mechanism; 201. a mounting frame; 210. a slide rail; 211. a conveying section; 212. a blanking section; 220. a pulley hook; 230. a chain; 240. a driving motor; 241. a drive gear; 242. a driven gear; 250. a spacing guide rail; 251. a limit switch;

300. A stirring mechanism; 310. a stirring barrel; 311. a feed inlet; 3111. a blade; 312. a water inlet pipe; 313. a water pump; 314. a discharge port; 320. stirring blades; 330. a stirring motor; 340. a liquid level sensor;

400. A conveying mechanism; 410. a delivery line; 420. an electromagnetic valve; 430. a dosing pump;

500. And a control cabinet.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides a carbon source adding device, and this carbon source adding device can realize the automatic periodic input of carbon source, reduces staff's operating frequency, reduces time cost and cost of labor.

Specifically, as shown in fig. 1 to 4, the carbon source adding device comprises a base 100, a conveying mechanism 200, a stirring mechanism 300 and a conveying mechanism 400, wherein a support column 110 is arranged on the base 100, and the conveying mechanism 200 is arranged at the top end of the support column. The stirring mechanism 300 is arranged on the base 100, the stirring mechanism 300 is positioned below the transmission mechanism, a plurality of movable hanging points are arranged on the transmission mechanism 200, a carbon bag 10 is hung at each hanging point, and a solid carbon source is arranged in the carbon bag 10; the hanging point can be driven to pass through the upper part of the stirring mechanism 300 by the conveying mechanism 200, and solid carbon sources in the carbon bag 10 are added into the stirring mechanism 300. Further, a water source is introduced into the stirring mechanism 300, the solid carbon source can be dissolved in the water source to form a carbon source solution through the stirring mechanism 300, the conveying mechanism 400 is communicated with the stirring mechanism 300, and the carbon source solution is added into the sewage treatment equipment through the conveying mechanism 400, so that the automatic addition of the carbon source is realized. The carbon source adding device has small occupied area, can be placed into the distributed sewage treatment equipment and is matched with the sewage treatment equipment for use.

Because the carbon source is prepared and used at present in the embodiment, manual on-site configuration is not needed, labor is saved, the problem of long-term placement of the liquid carbon source for acid generation and deterioration is avoided, and the purifying effect of the carbon source is good. And the solid carbon source is powdery or granular, and when not in use, the solid carbon source is vacuumized and sealed in the carbon bag 10, so that the solid carbon source can be isolated from the external environment, can be stored for a long time and is not easy to agglomerate.

Further, the carbon source adding device in this embodiment further includes a control cabinet 500, where the control cabinet 500 is disposed on a side wall of the upright, and the control cabinet 500 is in communication connection with the conveying mechanism 200, the stirring mechanism 300, and the conveying mechanism 400. The start and stop of the transfer mechanism 200, the stirring mechanism 300, and the conveying mechanism 400 can be controlled by the control cabinet 500. For example, the control cabinet 500 may be a PLC control cabinet 500, and various programs can be run in the control cabinet, and the specific control program is a mature technology in the prior art, which is not described herein. Therefore, automatic control is realized, the preparation and addition processes of the carbon source can be completed without human intervention, and the control cabinet 500 can be remotely controlled by networking without the need of personnel on duty.

With continued reference to fig. 5 and 6, the stirring mechanism 300 in this embodiment includes a stirring barrel 310 and a stirring blade 320, where the stirring blade 320 is located in the stirring barrel 310, and the stirring blade 320 can stir the water source and the solid carbon source, so that the solid carbon source is dissolved in the water source to form a carbon source solution, so that the conveying mechanism 400 is convenient to convey the carbon source solution to the sewage treatment apparatus.

Specifically, a feed inlet 311 and a water inlet 312 are arranged at the top of the stirring barrel 310, a solid carbon source is added into the stirring barrel 310 through the feed inlet 311, a water source is added into the stirring barrel 310 through the water inlet 312, a water pump 313 is arranged on the water inlet 312, and the water pump 313 provides power for conveying the water source. The bottom of the stirring barrel 310 is provided with a discharge hole 314, the discharge hole 314 is communicated with a conveying mechanism 400, and the mixed carbon source solution can be conveyed into sewage treatment equipment through the conveying mechanism 400. Alternatively, because the sewage treatment apparatus is inconvenient to take water, the water inlet pipe 312 may be connected to a reaction tank of the sewage treatment apparatus so as to use sewage in situ as a water source for dissolving the solid carbon source. By using the treated sewage as a water source, tap water is not needed, the field installation difficulty is reduced, and the cost is saved.

Further, a stirring motor 330 is further arranged at the top of the stirring barrel 310, and an output end of the stirring motor 330 extends into the stirring barrel 310 and is in transmission connection with the stirring blade 320, and the stirring motor 330 can drive the stirring blade 320 to rotate in the stirring barrel 310 so as to mix a water source and a solid carbon source to form a carbon source solution.

More preferably, the stirring barrel 310 is provided with a liquid level sensor 340, the fixed end of the liquid level sensor 340 is positioned at the top of the stirring barrel 310, the measuring end of the liquid level sensor 340 is positioned in the stirring barrel 310, and the arrangement position of the liquid level sensor 340 is positioned outside the rotation radius of the stirring blade 320, so that the measuring accuracy of the liquid level sensor 340 is ensured, and the influence of the fluctuation of the liquid level on the measuring effect is avoided. The liquid level in the stirring barrel 310 can be detected through the liquid level sensor 340, the liquid level sensor 340 is in communication connection with the control cabinet 500, the control cabinet 500 converts the volume of the carbon source solution in the stirring barrel 310 according to the current liquid level, and then the start and stop of the water pump 313 are controlled, the configuration concentration of the carbon source solution is ensured to be accurate, the concentration of the carbon source solution is kept stable, and the accurate throwing of the carbon source is realized.

With continued reference to fig. 1, in this embodiment, four limiting rods 120 are provided on the base 100, and the four limiting rods 120 are surrounded to form a mounting position, where the mounting position is used for placing the stirring barrel 310. The position of the stirring barrel 310 can be fixed through the setting of the limiting rod 120, the installation position of the stirring barrel 310 is accurate, and the solid carbon source can be ensured to be smoothly put into the stirring barrel 310.

Further, referring to fig. 1-4, the conveying mechanism 200 in this embodiment includes a mounting frame 201, a sliding rail 210 and a driving assembly, where the mounting frame 201 is located above the stirring barrel 310, the mounting frame 201 is fixed on the supporting post 110, the sliding rail 210 is disposed on the mounting frame 201, the sliding rail 210 is in a ring shape, a plurality of pulley hooks 220 are disposed on the sliding rail 210, the intervals between the plurality of pulley hooks 220 are the same, in this embodiment, the pulley hooks 220 are eleven, and each pulley hook 220 can move circularly along the sliding rail 210. The pulley hooks 220 are connected through the chain 230, each pulley hook 220 is a hanging point, the carbon bag 10 is hung on the pulley hook 220, the driving assembly is also arranged on the mounting frame 201, the driving assembly is in transmission connection with the chain 230, the chain 230 can be driven to move through the driving assembly, and then the chain 230 drives the pulley hooks 220 and the carbon bag 10 to move along the direction of the sliding rail 210. It should be noted that, the control cabinet 500 can control the start and stop of the driving assembly, when the carbon bag 10 moves to above the feed inlet 311 of the stirring barrel 310, the control cabinet 500 controls the driving assembly to stop, and at this time, the carbon source in the carbon bag 10 is scattered into the stirring barrel 310.

As an alternative, the driving assembly in this embodiment includes a driving motor 240, a driving gear 241 and a driven gear 242, where the driving motor 240, the driving gear 241 and the driven gear 242 are all disposed on the mounting frame 201, and the driving gear 241 and the driven gear 242 are horizontally disposed and can rotate freely, the output end of the driving motor 240 is connected with the driving gear 241, and the chain 230 is sleeved on the driving gear 241 and the driven gear 242 and meshed with the driving gear 241 and the driven gear 242. Therefore, when the driving motor 240 rotates, the driving gear 241 is driven to rotate, and the chain 230 is driven to move, and the chain 230 drives the driven gear 242 to rotate, so as to realize the circumferential movement of the pulley hook 220 along the sliding rail 210.

Further, in this embodiment, the sliding rail 210 includes a conveying section 211 and a discharging section 212, the discharging section 212 is located above the feeding hole 311 of the stirring barrel 310, the discharging section 212 is V-shaped, the highest point of the discharging section 212 and the conveying section 211 are located at the same level, and the lowest point of the discharging section 212 is lower than the level of the conveying section 211. The blade 3111 is disposed at the inlet 311 of the stirring barrel 310, the blade 3111 is mounted on the top of the inlet 311 and is level with the highest position of the inlet 311, the extending direction of the blade 3111 is opposite to the advancing direction of the carbon bag 10, the blade edge of the blade 3111 faces the slide rail 210, the carbon bag 10 is made into a cuboid, and the narrower side of the carbon bag 10 faces the advancing direction thereof, namely, the narrower side of the carbon bag 10 faces the direction of the blade edge. When the carbon bag 10 moves to the discharging section 212 along the sliding rail 210, the height of the carbon bag 10 starts to descend, the head of the blade 3111 is firstly contacted with the bottom of the carbon bag 10, and thus the carbon bag 10 is gradually contacted with the blade edge of the blade 3111, the carbon bag 10 is further scratched by the blade 3111, solid carbon source inside the carbon bag 10 is scattered from the carbon bag 10 into the stirring barrel 310, and at this time, the control cabinet 500 controls the transmission mechanism to stop conveying. It should be noted that, when the carbon bag 10 moves along the feeding end of the sliding rail 210, it is located at the lowest position, and is located in the vertical projection range of the feeding hole 311 of the stirring barrel 310 when it rises and falls, so that the solid carbon source is prevented from being scattered outside the stirring barrel 310, and is not contacted with the periphery of the feeding hole 311, and the carbon bag is suspended in the air in the whole process, so that the feeding hole 311 is prevented from being damaged by collision.

Optionally, a spacing rail 250 is further disposed between the sliding rail 210 and the stirring barrel 310, the shape of the spacing rail 250 is the same as that of the sliding rail 210, and the spacing rail 250 is located right below the sliding rail 210, and any two positions of the sliding rail 210 and the spacing rail 250 under the same vertical line are equally spaced. The limit guide rail 250 can ensure that the traveling direction of the carbon bag 10 is not deviated, and plays a role in guiding and limiting the carbon bag 10. Further, a limit switch 251 is disposed on the limit rail 250 corresponding to the lowest point of the blanking section 212, and the limit switch 251 is in communication connection with the control cabinet 500. When the limit switch 251 senses the carbon package 10, that is, sends a signal to the control cabinet 500, the control cabinet 500 controls the conveying mechanism 200 to stop running, and solid carbon sources in the carbon package 10 scatter from the carbon package 10 into the stirring barrel 310.

With continued reference to fig. 1, the conveying mechanism 400 in this embodiment includes a conveying pipeline 410, an electromagnetic valve 420 and a dosing pump 430, two ends of the conveying pipeline 410 are respectively communicated with a discharge port 314 of the stirring barrel 310 and a reaction tank of the sewage treatment device, the electromagnetic valve 420 and the dosing pump 430 are disposed on the conveying pipeline 410, the electromagnetic valve 420 is located at the upstream of the dosing pump 430, the flow rate of the carbon source solution in the conveying pipeline 410 can be regulated by adjusting the opening of the electromagnetic valve 420, and the flow rate of the carbon source solution in the conveying pipeline 410 can be regulated by increasing or decreasing the rotation speed of the dosing pump 430.

The specific working steps are as follows:

When the sewage treatment equipment needs to add a carbon source, the control cabinet 500 enters a dispensing program, the driving motor 240 of the conveying mechanism 200 is started to drive the driving gear 241 to rotate, the chain 230 drives the pulley lifting hook 220 to move along the conveying section 211 of the sliding rail 210, and when the carbon bag 10 moves to the discharging section 212 of the sliding rail 210 along with the pulley lifting hook 220, the carbon bag 10 reaches the position above the feeding hole 311 of the stirring barrel 310 and starts to move in an inclined downward direction, and the bottom of the carbon bag 10 is scratched by the blade 3111 at the feeding hole 311.

When the carbon package 10 moves to the lowest point of the blanking section 212, the limit switch 251 senses the carbon package 10, the control cabinet 500 controls the conveying mechanism 200 to stop running, the solid carbon source enters the stirring barrel 310 through the feeding hole 311 under the action of gravity, after all the solid carbon source enters the stirring barrel 310, the control cabinet 500 controls the water pump 313 to start, the water source reaching the standard is added into the stirring barrel 310, and the liquid level sensor 340 measures the liquid level in the stirring barrel 310 in real time. When the liquid level reaches a set value, the control cabinet 500 controls the water pump 313 to stop, starts the stirring motor 330, drives the stirring blade 320 to rotate through the stirring motor 330, the stirring blade 320 fully mixes and dissolves the solid carbon source and the water source, and forms a carbon source solution after the solid carbon source is completely dissolved, and the control cabinet 500 controls the stirring motor 330 to stop. Then, the water pump 313 is started again to add water into the stirring barrel 310, after the water pump 313 reaches the set highest liquid level, the stirring motor 330 is started again, after the carbon source solution is fully and uniformly mixed, the stirring motor 330 is stopped, and the preparation of the carbon source solution is completed and the adding is waited.

The solid carbon source with a certain mass is completely dissolved to prepare a carbon source solution with a certain volume, and the concentration of the carbon source solution can be kept stable. When a liquid carbon source is required, the control cabinet 500 opens the solenoid valve 420 and activates the dosing pump 430. The dosing pump 430 doses the liquid carbon source according to actual needs, thereby realizing accurate dosing. After the addition of the liquid carbon source is completed, the control cabinet 500 closes the solenoid valve 420 and stops the dosing pump 430.

After the carbon source solution in the sewage treatment equipment is used up, the conveying mechanism 200 needs to be started again, the empty carbon source bag is moved out of the feed inlet 311, the unused carbon bag 10 is moved to the feed inlet 311 of the stirring barrel 310, and so on until the carbon bag 10 on the sliding rail 210 is used up, the control cabinet 500 device sends a feeding signal, at the moment, a worker is arranged to originally supplement the carbon bag 10 to the pulley lifting hook 220 on the spot, the carbon bag 10 supplementing period is prolonged, and the manual maintenance times are reduced.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A carbon source adding device, comprising:

A base (100), wherein a support column (110) is arranged on the base (100);

The conveying mechanism (200) is arranged on the support column (110), a plurality of movable hanging points are arranged on the conveying mechanism (200), a carbon bag (10) is hung at each hanging point, and solid carbon sources are arranged in the carbon bag (10);

The stirring mechanism (300) is arranged on the base (100) and is positioned below the conveying mechanism (200), the conveying mechanism (200) drives the hanging point to pass through the stirring mechanism (300) periodically, the solid carbon source in the carbon bag (10) is added into the stirring mechanism (300), a water source is introduced into the stirring mechanism (300), and the stirring mechanism (300) is used for dissolving the solid carbon source in the water source to form a carbon source solution;

A conveying mechanism (400) communicated with the stirring mechanism (300), wherein the conveying mechanism (400) is used for adding the carbon source solution into sewage treatment equipment;

And a control cabinet (500) which is arranged on the support column (110) and is in communication connection with the conveying mechanism (200), the stirring mechanism (300) and the conveying mechanism (400).

2. The carbon source adding device according to claim 1, wherein the stirring mechanism (300) includes:

The stirring barrel (310) is provided with a feed inlet (311) and a water inlet pipe (312) at the top, the solid carbon source is added into the stirring barrel (310) through the feed inlet (311), the water source is added into the stirring barrel (310) through the water inlet pipe (312), the water inlet pipe (312) is provided with a water pump (313), the bottom of the stirring barrel (310) is provided with a discharge outlet (314), and the discharge outlet (314) is communicated with the conveying mechanism (400);

Stirring vane (320) is located in agitator (310) to with agitator motor (330) transmission connection, agitator motor (330) drive stirring vane (320) are in agitator (310) internal rotation, in order to with the water source with solid carbon source mixes the formation the carbon source solution.

3. The carbon source adding device according to claim 2, wherein the stirring barrel (310) is provided with a liquid level sensor (340), the liquid level sensor (340) is used for detecting the liquid level height in the stirring barrel (310), and the liquid level sensor (340) is in communication connection with the control cabinet (500).

4. The carbon source adding device according to claim 2, wherein the conveying mechanism (200) includes:

-a mounting frame (201) located above the stirring tank (310);

The sliding rail (210) is arranged on the mounting frame (201), the sliding rail (210) is annular, a plurality of pulley hooks (220) are arranged on the sliding rail (210), the pulley hooks (220) can move circularly along the sliding rail (210), a plurality of pulley hooks (220) are connected through chains (230), each pulley hook (220) is one hanging point, and the carbon bag (10) is hung on the pulley hooks (220);

The driving assembly is arranged on the mounting frame (201), is in transmission connection with the chain (230), and is used for driving the chain (230) to move.

5. The carbon source adding device according to claim 4, wherein the driving assembly comprises a driving motor (240), a driving gear (241) and a driven gear (242), the driving motor (240) is connected with the driving gear (241), and the chain (230) is sleeved on the driving gear (241) and the driven gear (242).

6. The carbon source adding device according to claim 4, wherein the sliding rail (210) comprises a conveying section (211) and a blanking section (212), the blanking section (212) is positioned above the feeding hole (311), the blanking section (212) is V-shaped, the highest point of the blanking section (212) and the conveying section (211) are positioned at the same horizontal height, and the lowest point of the blanking section (212) is lower than the horizontal height of the conveying section (211);

The feeding port (311) is provided with a blade (3111), the blade edge of the blade (3111) faces the sliding rail (210), and when the carbon bag (10) moves to the discharging section (212) along the sliding rail (210), the blade (3111) scratches the carbon bag (10) so that the solid carbon source is scattered from the carbon bag (10) to enter the stirring barrel (310).

7. The carbon source adding device according to claim 6, wherein a limit rail (250) is provided between the slide rail (210) and the stirring tank (310), the shape of the limit rail (250) is the same as the shape of the slide rail (210), and the limit rail (250) is located right below the slide rail (210).

8. The carbon source adding device according to claim 7, wherein a limit switch (251) is arranged on the limit guide rail (250) at a position corresponding to the lowest point of the blanking section (212), and the limit switch (251) is in communication connection with the control cabinet (500).

9. The carbon source adding device according to claim 2, wherein the conveying mechanism (400) comprises a conveying pipeline (410), an electromagnetic valve (420) and a dosing pump (430), two ends of the conveying pipeline (410) are respectively communicated with the discharge port (314) and the sewage treatment equipment, the electromagnetic valve (420) and the dosing pump (430) are arranged on the conveying pipeline (410), and the electromagnetic valve (420) is located at the upstream of the dosing pump (430).

10. The carbon source adding device according to any one of claims 2 to 9, wherein a plurality of limit rods (120) are arranged on the base (100), and a plurality of limit rods (120) are surrounded to form an installation position, and the installation position is used for placing the stirring barrel (310).