Sodium bicarbonate grinding system

Abstract

The utility model relates to a baking soda grinding system, and relates to the field of powder grinding systems.The baking soda grinding system comprises a storage bin and a conveying pipe, the conveying pipe comprises a discharging part and a conveying part, the discharging part communicates with the conveying part, the end, away from the conveying part, of the discharging part communicates with the storage bin, and the end, away from the conveying part, of the conveying part communicates with the storage bin; and a metering pump for metering baking soda entering the desulfurizing tower is arranged on the material conveying part. The device has the advantages that the conveying amount of baking soda conveyed into the desulfurization tower from the storage bin is counted through the metering pump, excessive baking soda is prevented from being conveyed into the desulfurization tower, and the cost of the dry desulfurization process is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of powder grinding system, in particular to a baking soda grinding system. BACKGROUND

[0002] The main pollutants contained in waste incineration flue gas include acid gas and smoke dust, and the commonly used flue gas deacidification process includes dry, wet and semi-dry three kinds. Baking soda generally refers to sodium bicarbonate, which is slowly decomposed in humid air or hot air, producing carbon dioxide, and losing all carbon dioxide when heated to 270℃, and strongly decomposing when encountering acid to produce carbon dioxide, which is a commonly used material in dry deacidification process.

[0003] In the related art, for example, Chinese patent publication No. CN211887363U discloses a baking soda grinding device for dry desulfurization, which includes a frame body, a feeding hopper, a grinding machine body and a conveying fan mounted on the frame body, the bottom of the feeding hopper is connected with the feeding pipe and the feeding port of the grinding machine body, the discharge port of the grinding machine body is connected with the conveying fan through the suction pipe, and the feeding device further includes a shell, a feeding motor and a feeding roller; the upper part of the shell is connected with the feeding port, and the lower part is connected with the feeding pipe, the feeding motor is fixedly installed on the outer wall of the shell, and the two ends of the feeding roller are rotatably connected with the two opposite inner walls of the shell; the end face and the circumferential side wall of the feeding roller are gap-fitted with the inner wall of the shell; a plurality of feeding grooves are uniformly distributed on the circumferential side wall of the feeding roller; and the output shaft of the feeding motor is mechanically connected with the feeding roller.

[0004] For the related art in the above, the inventors believe that the baking soda grinding device cannot count the amount of baking soda used in the desulfurization process during use, which is not conducive to the user to determine whether the acid gas in the waste incineration flue gas is completely reacted, and there is still room for improvement. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the problem that the baking soda grinding device cannot count the amount of baking soda used in the desulfurization process during use, which is not conducive to the user to determine whether the acid gas in the waste incineration flue gas is completely reacted, the present application provides a baking soda grinding system.

[0006] The baking soda grinding system provided by the present application adopts the following technical scheme:

[0007] A baking soda grinding system, comprising a storage bin and a conveying pipe, the conveying pipe comprising a feeding part and a conveying part, the feeding part and the conveying part being in communication with each other, one end of the feeding part away from the conveying part being in communication with the storage bin, and a metering pump being arranged on the conveying part to meter the baking soda entering the desulfurization tower.

[0008] By adopting the technical scheme, the metering pump is installed on the conveying part, the conveying amount of the baking soda from the storage bin to the desulfurization tower is counted through the metering pump, whether the acid gas in the waste incineration flue gas is completely reacted is calculated and judged according to the use amount of the baking soda in the desulfurization process, and the over-conveying of the baking soda to the desulfurization tower is avoided, thereby reducing the cost of the dry desulfurization process.

[0009] Optionally, the device further comprises a replenishment hopper, wherein the replenishment hopper is provided with a replenishment pipe, one end of the replenishment pipe is in communication with the replenishment hopper, and the other end of the replenishment pipe is in communication with the storage bin.

[0010] By adopting the technical scheme, the baking soda in the storage bin is replenished through the replenishment hopper, the open setting of the replenishment hopper facilitates the entry of the baking soda, and the convenience of adding the baking soda to the baking soda grinding system is improved.

[0011] Optionally, the replenishment pipe is provided with a replenishment valve for controlling the flow of the baking soda in the replenishment pipe.

[0012] By adopting the technical scheme, when the baking soda in the storage bin is sufficient to desulfurize the waste incineration flue gas in the desulfurization tower, the replenishment valve is closed to stop replenishing the storage bin, the risk of waste of the baking soda caused by over-conveying of the baking soda to the storage bin is avoided, and the loss of the baking soda is reduced.

[0013] Optionally, the discharging part is further provided with a screw feeder.

[0014] By adopting the technical scheme, the baking soda is stably and uniformly pushed into the discharging part by rotating the screw feeder, the baking soda particles are uniformly distributed in the conveying pipe, and the smoothness of the baking soda conveying is improved.

[0015] Optionally, the device further comprises a medicine storage tank for storing medicine for descaling the metering pump, and the medicine storage tank is in communication with the metering pump.

[0016] By adopting the technical scheme, when scaling occurs in the metering pump, the metering function of the metering pump will be affected to a certain extent, at this time, the medicine storage tank is opened to perform descaling treatment on the metering pump, and the accuracy of the metering pump in metering the baking soda into the desulfurization tower is improved.

[0017] Optionally, the conveying pipe further comprises a discharging part extending into the desulfurization tower, the discharging part is in communication with one end of the conveying part away from the discharging part, and the discharging part is provided with a plurality of through holes for the baking soda to be scattered out of the discharging part.

[0018] Compared with directly spraying baking soda in large quantities from the end of the feeding part away from the discharging part, the plurality of through holes enable the baking soda to enter the desulfurization tower in small batches, increase the contact area between the baking soda and the waste incineration flue gas, and thus improve the reaction speed of the baking soda powder and the waste incineration flue gas.

[0019] Optionally, the discharging part is provided with a plurality of through holes, the through holes are coaxially arranged one by one corresponding to the through holes, the discharging part is provided with a plurality of dredging columns, the dredging column comprises a through part and a dredging part, the through part is arranged in the through hole one by one, and the dredging part is fixedly connected to one end of the through part. When the dredging column moves to the side close to the through hole, the through part abuts against the inner wall of the discharging part, and the dredging part is arranged in the through hole.

[0020] Through the above technical scheme, when the baking soda is blocked due to caking caused by moisture, the through part is pushed to move to the side close to the through hole, and the caked baking soda in the discharging part is pushed out of the discharging part through the through hole by the dredging part, thereby improving the smoothness of conveying the baking soda. On the other hand, when the dredging part is arranged in the through hole, the through part abuts against the inner wall of the discharging part, thereby avoiding the disengagement of the dredging column from the discharging part and falling off, and improving the stability of the dredging column arranged on the discharging part.

[0021] Optionally, the discharging part is provided with a plurality of guide cylinders, and the through part is arranged in the guide cylinder and the through hole in sequence.

[0022] Through the above technical scheme, since the guide cylinder has a certain length and the through part is arranged in the guide cylinder, the through part slides along the length direction of the guide cylinder, thereby avoiding the difficulty of aligning the through hole for the arrangement of the dredging part when the through part moves, and improving the smoothness of the through part driving the dredging part to dredge the through hole.

[0023] Optionally, the dredging column is provided with a connecting rod, and all the through parts are fixedly connected to the connecting rod away from the dredging part.

[0024] Through the above technical scheme, by fixing all the through parts to the same connecting rod, the connecting rod is operated to dredge all the through holes, without sequentially pushing the through part to arrange the dredging part in the through hole, thereby improving the convenience of dredging the through hole blocked by the caked baking soda.

[0025] Optionally, the connecting rod is provided with a spring, one end of the spring is fixedly connected to the connecting rod, and the other end of the spring is fixedly connected to the discharging part.

[0026] By adopting the technical scheme, the connecting rod is fixedly connected to the discharging part by the spring, the penetrating part is penetrated on the discharging part, when the connecting rod is pressed to dredge all the through holes, the spring is in a compressed state, when the pressing force is lost, the elastic force of the spring pushes the connecting rod to the position before being pressed, and the convenience of separating the dredging part from the through hole is improved.

[0027] To sum up, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The amount of baking soda delivered from the storage bin to the desulfurization tower is counted by the metering pump, which avoids delivering excessive baking soda to the desulfurization tower and reduces the cost of the dry desulfurization process;

[0029] 2. The arrangement of a plurality of through holes allows small batches of baking soda to enter the desulfurization tower, increasing the contact area between the baking soda and the waste incineration flue gas and improving the reaction speed of the baking soda and the flue gas;

[0030] 3. The through holes blocked by baking soda clumps are dredged by the dredging column, and the baking soda clumps of the discharging part are pushed out of the discharging part through the through holes by the dredging part, improving the smoothness of the baking soda delivery BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structure diagram of a baking soda grinding system in the embodiment of the present application.

[0032] Figure 2 is a top view of the discharging part and the dredging assembly in the embodiment of the present application.

[0033] Figure 3 is Figure 2 a sectional view in the A-A direction of

[0034] BRIEF DESCRIPTION OF DRAWINGS: 1, storage bin; 2, delivery pipe; 21, discharging part; 211, screw feeder; 22, delivery part; 221, metering pump; 23, discharging part; 231, through hole; 232, dredging assembly; 2321, penetrating part; 23212, dredging part; 2322, connecting rod; 2323, spring; 233, penetrating hole; 234, guide cylinder; 3, replenishing hopper; 31, replenishing pipe; 311, replenishing valve; 4, medicine storage tank. DETAILED DESCRIPTION

[0035] The following will be described in detail in combination with the accompanying Figures 1-3 The present application will be further described in detail.

[0036] The embodiment of the present application discloses a baking soda grinding system.

[0037] Reference Figure 1The soda ash grinding system comprises a storage bin 1, a conveying pipe 2 and a replenishing hopper 3. The storage bin 1 is used for storing the soda ash to be sent to the desulfurization tower. One end of the conveying pipe 2 is communicated with the storage bin 1, and the other end of the conveying pipe 2 extends into the desulfurization tower to convey the soda ash. The replenishing hopper 3 is communicated with the storage bin 1 to replenish the soda ash in the storage bin 1.

[0038] With reference to Figure 1 The replenishing hopper 3 is provided with a replenishing pipe 31, one end of the replenishing pipe 31 is communicated with the replenishing hopper 3, and the other end of the replenishing pipe 31 is communicated with the storage bin 1 to convey the soda ash in the replenishing hopper 3 into the storage bin 1. In order to avoid conveying excessive soda ash to the desulfurization tower, the replenishing pipe 31 is provided with a replenishing valve 311. When the conveyed soda ash is sufficient to completely react with the flue gas of the waste incineration, the replenishing valve 311 is closed to reduce the waste of soda ash. The conveying pipe 2 comprises a discharging part 21, a conveying part 22 and a discharging part 23, which are all in the shape of pipes and communicated with each other. One end of the discharging part 21 is communicated with the storage bin 1, and the end of the discharging part 21 close to the storage bin 1 is provided with a screw feeder 211. The screw feeder 211 is used to uniformly push the soda ash in the storage bin 1 into the discharging part 21 to make the soda ash uniformly distributed when moving in the discharging part 21. The conveying part 22 is communicated with the end of the discharging part 21 away from the storage bin 1, and the discharging part 23 is communicated with the end of the conveying part 22 away from the discharging part 21. In order to count the usage amount of the soda ash in the desulfurization process, the conveying part 22 is provided with a metering pump 221 to meter the soda ash entering the desulfurization tower. The soda ash grinding system further comprises a storage tank 4, which is communicated with the metering pump 221. When the metering pump 221 is scaled to cause the metering result to deviate, the metering pump 221 is descaled by the chemical solution in the storage tank 4.

[0039] With reference to Figure 2 and Figure 3The discharging part 23 has a plurality of through holes 231. Since the desulfurization tower has a negative pressure, the baking soda is sucked into the desulfurization tower from the through holes 231. In order to facilitate the dredging of the through holes 231 when the baking soda is blocked due to moisture and caking, the discharging part 23 is provided with a dredging assembly 232. The dredging assembly 232 includes a dredging column 2321, a connecting rod 2322 and a spring 2323. The dredging column 2321 includes a passing portion 23211 and a dredging portion 23212. The discharging part 23 has a plurality of passing holes 233, which are coaxially arranged one by one corresponding to the through holes 231. The passing portion 23211 is arranged in the passing hole 233 one by one. The dredging portion 23212 is fixedly connected to one end of the passing portion 23211 close to the through hole 231. When the passing portion 23211 moves to the side close to the through hole 231, the side of the passing portion 23211 close to the dredging portion 23212 abuts against the inner wall of the discharging part 23, and the dredging portion 23212 is arranged in the through hole 231 to push the baking soda blocked in the discharging part 23 out of the through hole 231. At this time, the dredging portion 23212 is arranged in the through hole 231.

[0040] With reference to Figure 2 and Figure 3 In order to limit the moving direction of the passing portion 23211, the discharging part 23 is further provided with a guide cylinder 234 coaxially arranged with the passing hole 233, and the passing portion 23211 is arranged in the guide cylinder 234 and the passing hole 233 in sequence. The ends of all the passing portions 23211 away from the dredging portion 23212 are fixedly connected to the connecting rod 2322, so as to realize the synchronous movement of all the dredging columns 2321 with the movement of the connecting rod 2322. One end of the spring 2323 is fixedly connected to the connecting rod 2322, and the other end of the spring 2323 is fixedly connected to the discharging part 23, so that when the connecting rod 2322 loses the pressing force after the dredging of the through hole 231 is completed, the connecting rod 2322 is restored to the position before being pressed by the elastic force of the spring 2323, thereby driving the dredging portion 23212 to move away from the through hole 231.

[0041] The implementation principle of the baking soda grinding system in the embodiment of the application is as follows: the feeding valve 311 is opened, baking soda in the feeding hopper 3 enters the storage bin 1, and the baking soda in the feeding bin is supplemented; the screw feeder 211 is started to push the baking soda into the discharging part 21 at a constant speed; the metering part meters the baking soda passing through when the baking soda passes through the feeding part 22; the baking soda is sucked out from the through hole 231 by the negative pressure existing in the desulfurization tower; if the baking soda in the discharging part 23 is damp and caked to block the through hole 231, the feeding valve 311 is closed to stop supplementing the baking soda to the storage bin 1, the caked baking soda is pushed out of the discharging part 23 from the through hole 231 by the dredging part 23212 after the reaction in the desulfurization tower is completed, the connecting rod 2322 is pressed to make the dredging part 23212 push the caked baking soda out of the discharging part 23 from the through hole 231, after the pressing is stopped, the connecting rod 2322 is restored to the position before being pressed by the elastic force of the spring 2323, and at this time, the dredging part 23212 is separated from the through hole 231; if the scaling in the metering pump 221 affects the metering of the baking soda, the feeding valve 311 is closed, and the scaling in the metering pump 221 is removed by the medicine water in the medicine tank 4.

[0042] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A baking soda grinding system, characterized by: The invention comprises a storage bin (1) and a delivery pipe (2), wherein the delivery pipe (2) comprises a discharge portion (21) and a delivery portion (22), wherein the discharge portion (21) and the delivery portion (22) are connected to each other, and an end of the discharge portion (21) away from the delivery portion (22) is connected to the storage bin (1), and a metering pump (221) for metering baking soda entering the desulfurization tower is provided on the delivery portion (22).

2. A baking soda grinding system according to claim 1, characterized in that: It also includes a feeding hopper (3), wherein a feeding pipe (31) is provided on the feeding hopper (3), one end of the feeding pipe (31) is connected to the feeding hopper (3), and the other end of the feeding pipe (31) is connected to the storage bin (1).

3. A baking soda grinding system according to claim 2, characterized in that: The feeding pipe (31) is provided with a feeding valve (311) for controlling the circulation of baking soda in the feeding pipe (31).

4. The baking soda grinding system according to claim 1, wherein: The unloading portion (21) is further provided with a screw feeder (211).

5. The baking soda grinding system according to claim 1, characterized in that: It also includes a medicine storage tank (4) for storing medicine for descaling the metering pump (221), and the medicine storage tank (4) is connected to the metering pump (221).

6. The baking soda grinding system according to claim 1, characterized in that: The conveying pipe (2) further comprises a discharge portion (23) extending into the desulfurization tower, the discharge portion (23) being connected to an end of the conveying portion (22) away from the discharge portion (21), and the discharge portion (23) being provided with a plurality of through holes (231) for baking soda to be sprinkled out from the discharge portion (23).

7. The baking soda grinding system according to claim 6, characterized in that: The discharge portion (23) is provided with a plurality of perforations (233), and the perforations (233) are coaxially arranged with the through hole (231) in a one-to-one correspondence. The discharge portion (23) is provided with a plurality of dredging columns (2321), and the dredging columns (2321) include a perforation portion (23211) and a dredging portion (23212). The perforations (23211) are perforated in the perforations (233) in a one-to-one correspondence. The dredging portion (23212) is fixedly connected to one end of the perforation portion (23211). When the dredging columns (2321) move toward a side close to the through hole (231), the perforation portion (23211) abuts against the inner wall of the discharge portion (23), and the dredging portion (23212) is perforated in the through hole (231).

8. The baking soda grinding system according to claim 7, characterized in that: The discharge portion (23) is provided with a plurality of guide cylinders (234), and the penetration portion (23211) is penetrated in the guide cylinders (234) and the penetration hole (233) in sequence.

9. The baking soda grinding system according to claim 7, characterized in that: The dredging column (2321) is provided with a connecting rod (2322), and one end of all the penetrating portions (23211) away from the dredging portion (23212) is fixedly connected to the connecting rod (2322).

10. The baking soda grinding system according to claim 9, characterized in that: A spring (2323) is provided on the connecting rod (2322), one end of the spring (2323) is fixedly connected to the connecting rod (2322), and the other end of the spring (2323) is fixedly connected to the discharge portion (23).

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