Pickling equipment

Abstract

The utility model discloses pickling equipment which comprises a reaction tank provided with a reaction cavity, a sand inlet and a sand discharge port, the sand inlet and the sand discharge port are both communicated with the reaction cavity, the sand inlet is located at the top of the reaction tank, and the sand discharge port is located at the bottom of the reaction tank; the vibration assembly is connected to the outer wall of the reaction tank, the vibration assembly can vibrate, and the vibration assembly is used for driving the reaction tank to vibrate. The pickling equipment disclosed by the utility model can be used for rapidly discharging quartz sand.

Description

Technical Field

[0001] The utility model relates to the technical field of glass manufacturing and processing equipment, in particular to a pickling device. Background Art

[0002] In the related art, quartz sand is the raw material for glass manufacturing and processing. Quartz sand needs to go through processes such as crushing, pickling, washing, drying and grading before it can be used in glass manufacturing and processing.

[0003] During the pickling process of quartz sand, it will be pickled in a pickling reaction tank. After pickling, the quartz sand needs to be discharged from the pickling reaction tank. Since the particle size of quartz sand is relatively coarse, the acid discharge process (especially vacuum acid discharge) will make the quartz sand layer denser, resulting in poor fluidity of the quartz sand after pickling, which will slow down the discharge speed of the pickling reaction tank. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a pickling device that can quickly discharge quartz sand.

[0005] The pickling equipment according to the embodiment of the utility model comprises:

[0006] A reaction tank, comprising a reaction chamber, a sand inlet and a sand outlet, wherein the sand inlet and the sand outlet are both connected to the reaction chamber, the sand inlet is located at the top of the reaction tank, and the sand outlet is located at the bottom of the reaction tank;

[0007] A vibration component is connected to the outer wall of the reaction tank, the vibration component can vibrate, and the vibration component is used to drive the reaction tank to vibrate.

[0008] The pickling equipment according to the embodiment of the utility model has at least the following beneficial effects: by connecting the vibration component to the reaction tank, quartz sand can enter the reaction chamber from the sand inlet, and then after the vibration component vibrates the reaction chamber, the quartz sand can be quickly discharged from the reaction chamber from the sand outlet. Specifically, the pickling equipment can quickly discharge the quartz sand.

[0009] According to the pickling equipment of some embodiments of the utility model, the reaction tank also has a first liquid inlet and a second liquid inlet connected to the reaction chamber, and the first liquid inlet and the second liquid inlet are both used to introduce liquid into the reaction chamber, wherein the first liquid inlet is located at the top of the reaction tank, and the second liquid inlet is located at the bottom of the reaction tank.

[0010] According to some embodiments of the pickling equipment of the present invention, the pickling equipment also includes a first spray assembly, the first spray assembly includes a first liquid inlet pipe and a first spray pipe, the first spray pipe is provided with a spray port, the first spray pipe is arranged in the reaction chamber, the first liquid inlet pipe is passed through the reaction tank and is connected to the first spray pipe.

[0011] According to the pickling equipment of some embodiments of the utility model, a plurality of the first spray pipes are provided, the diameters of the plurality of the first spray pipes are different, and the first spray pipes are distributed around the center of the reaction chamber as a circle.

[0012] According to the pickling equipment of some embodiments of the present invention, the pickling equipment also includes a second spray assembly, the second spray assembly is located at the bottom of the reaction tank, and the first spray assembly is located at the top of the reaction tank.

[0013] According to the pickling equipment of some embodiments of the utility model, the second spray assembly includes a second liquid inlet pipe and a second spray pipe, the second liquid inlet pipe is penetrated through the reaction tank and connected with the second spray pipe, the second spray pipe includes a liquid passage pipe and a nozzle, the nozzle is used to spray liquid, the liquid passage pipe is arranged around the center of the reaction chamber, the nozzle is connected to the liquid passage pipe, and the nozzle is arranged toward the center of the reaction chamber.

[0014] According to the pickling equipment of some embodiments of the present invention, a plurality of vibration components are provided, and the plurality of vibration components are circumferentially arranged around the center of the reaction tank.

[0015] According to the pickling equipment of some embodiments of the utility model, the reaction tank also has a sand flushing port, and the pickling equipment also includes a sand flushing pipe, which is used to pass liquid. The sand flushing pipe is arranged in the sand flushing port, and one end of the sand flushing pipe is located above the sand discharge port.

[0016] According to the pickling equipment of some embodiments of the utility model, the pickling equipment further comprises an acid filter cartridge, which is disposed in the reaction chamber and is used for filtering acid liquid.

[0017] According to the pickling equipment of some embodiments of the utility model, the reaction tank includes a first part, a second part and a third part, the two ends of the second part are respectively connected to the first part and the third part, the sand inlet is located in the first part, the sand discharge port is located in the third part, and the cross-sectional area of ​​the third part gradually decreases from the second part to the third part, and the cross-sectional area of ​​the first part gradually decreases from the second part to the first part.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 It is a schematic diagram of pickling equipment in some embodiments of the utility model;

[0021] Figure 2 It is a schematic top view of the pickling equipment of the first embodiment of the utility model;

[0022] Figure 3 A schematic top view of a pickling device according to a second embodiment of the utility model;

[0023] Figure 4 It is a schematic top view of the pickling equipment of the third embodiment of the utility model.

[0024] Reference numerals:

[0025] Acid cleaning equipment 10, a reaction tank 100, a first part 110, a second part 120, a third part 130, a reaction chamber 140, a sand inlet 150, a sand discharge port 160, a sand flushing port 170, an overflow port 180, an inspection port 190, an observation port 200, a first liquid inlet 210, a second liquid inlet 220, an exhaust port 230, a vibration component 300, a first spray component 400, a first liquid inlet pipe 410, a first spray pipe 420, a second spray component 500, a second liquid inlet pipe 510, a second spray pipe 520, a liquid passing pipe 521, a spray pipe 522, a sand flushing pipe 600, and an acid filter cylinder 700. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Please refer to Figures 1 to 4 In some embodiments, the pickling equipment 10 includes: a reaction tank 100 and a vibration assembly 300. The reaction tank 100 has a reaction chamber 140, a sand inlet 150 and a sand outlet 160. The sand inlet 150 and the sand outlet 160 are both connected to the reaction chamber 140, the sand inlet 150 is located at the top of the reaction tank 100, and the sand outlet 160 is located at the bottom of the reaction tank 100. The sand inlet 150 is used to supply quartz sand into the reaction chamber 140, and the sand outlet 160 is used to discharge the quartz sand in the reaction chamber 140. The vibration assembly 300 is connected to the outer wall of the reaction tank 100, the vibration assembly 300 can vibrate, and the vibration assembly 300 is used to drive the reaction tank 100 to vibrate. Specifically, by connecting the vibration component 300 to the reaction tank 100, quartz sand can enter the reaction chamber 140 from the sand inlet 150, and then after the vibration component 300 vibrates the reaction chamber 140, the quartz sand can be quickly discharged from the reaction chamber 140 from the sand outlet 160. Among them, in the prior art, since the particle size of quartz sand is relatively coarse, the acid discharge process will make the quartz sand layer become more dense, resulting in poor fluidity of the quartz sand after pickling, so that the quartz sand cannot be quickly discharged from the reaction tank 100. In the present application, after the vibration component 300 vibrates, it can drive the reaction tank 100 to vibrate, and the quartz sand can become loose and quickly discharged. Specifically, the pickling equipment 10 can quickly discharge the quartz sand.

[0032] The specific structure of the vibration assembly 300 is introduced below. The vibration assembly 300 includes a vibration motor and a connecting piece, and the vibration motor is connected to the reaction tank 100 through the connecting piece. The vibration motor can be connected to the tank body of the reaction tank 100 by bolts. Among them, the vibration motor is a set of adjustable eccentric blocks installed at both ends of the rotor shaft, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric block is used to obtain the exciting force, thereby realizing the vibration of the object. Its principle is based on the electromagnetic induction and dynamic principles of the motor, and the torque is generated through the interaction between the current and the magnetic field to convert mechanical energy into vibration energy. The vibration motor has a large vibration frequency range, and only when the exciting force and power are properly matched can the mechanical noise be reduced. After the vibration motor is installed on the reaction tank 100, the vibration motor can drive the reaction tank 100 to vibrate, thereby making the dense quartz sand loose.

[0033] Furthermore, in some embodiments, the pickling equipment 10 further includes a buffer, which is connected to the reaction tank 100 and is located below the reaction tank 100. When the reaction tank 100 vibrates and the reaction tank 100 is installed on the ground, the buffer can effectively prevent the reaction tank 100 from causing damage to the ground.

[0034] For further information, please refer to Figures 2 to 3 In some embodiments, the reaction tank 100 further has a first liquid inlet 210 and a second liquid inlet 220 connected to the reaction chamber 140. The first liquid inlet 210 and the second liquid inlet 220 are both used to pass liquid into the reaction chamber 140, wherein the first liquid inlet 210 is located at the top of the reaction tank 100, and the second liquid inlet 220 is located at the bottom of the reaction tank 100. Specifically, the first liquid inlet 210 can be used to pass acid or water into the reaction chamber 140. When the acid is passed, the acid can react with the quartz sand, thereby improving the purity of the quartz sand. After the quartz sand reacts with the acid, when the quartz sand needs to be discharged, water can be passed through the first liquid inlet 210 to wash the quartz sand with water, and the water can assist the quartz sand to flow out of the reaction chamber 140 quickly. The second liquid inlet 220 can be used to pass acid or water into the reaction chamber 140. When the acid is passed, the acid can react with the quartz sand, thereby improving the purity of the quartz sand. After the quartz sand reacts with the acid, when the quartz sand needs to be discharged, water can be passed through the second liquid inlet 220 to wash the quartz sand with water, and the water can assist the quartz sand to flow out of the reaction chamber 140 quickly. In addition, when there is more quartz sand, liquid can be passed through the first liquid inlet 210, and when there is less quartz sand, the first liquid inlet 210 and the second liquid inlet 220 can be used to cooperate to improve work efficiency.

[0035] For further information, please refer to Figures 2 to 3In some embodiments, the pickling equipment 10 further includes a first spray assembly 400. The first spray assembly 400 includes a first liquid inlet pipe 410 and a first spray pipe 420. The first spray pipe 420 is provided with a spray port, the first spray pipe 420 is provided in the reaction chamber 140, and the first liquid inlet pipe 410 is provided in the reaction tank 100 and communicated with the first spray pipe 420. The liquid can enter the first liquid inlet pipe 410, and then continue to enter the first spray pipe 420, and finally flow out from the spray port into the reaction chamber 140. The liquid can be acid or water. Among them, through the setting of the first spray assembly 400, the liquid can be sprayed on the quartz sand in an all-round and uniform manner, so that the quartz sand and the liquid are mixed. The first spray assembly 400 can spray the liquid on the quartz sand without dead angles, thereby improving the spraying effect. In addition, the first spray assembly 400 can be mounted on the reaction tank 100 through a bracket.

[0036] In order to further improve the spraying effect, a plurality of first spray pipes 420 may be provided. Figures 2 to 3 In some embodiments, a plurality of first spray pipes 420 are provided, and the diameters of the plurality of first spray pipes 420 are different, and each first spray pipe 420 is distributed around the center of the reaction chamber 140. For example, there may be three first spray pipes 420, and each first spray pipe 420 is arranged in a ring shape. The three first spray pipes 420 are arranged concentrically around the center of the reaction chamber 140. That is, the first spray pipe 420 with the largest diameter surrounds the periphery of the first spray pipe 420 with the second largest diameter and the first spray pipe 420 with the smallest diameter, and the spray pipe with the second largest diameter surrounds the periphery of the first spray pipe 420 with the smallest diameter. In this way, by providing a plurality of first spray pipes 420, it can be effectively ensured that each part in the reaction chamber 140 can obtain uniform liquid, and each spray pipe can cover its specific area without overlap or omission, thereby ensuring uniform treatment of the entire area. In addition, the provision of multiple first spray pipes 420 can also reduce waste, since the uniform distribution of the spraying liquid reduces the accumulation of liquid in a specific area or over-spraying, thereby reducing waste and unnecessary costs.

[0037] For further information, please refer to Figures 2 to 4In some embodiments, the pickling equipment 10 further includes a second spray assembly 500, which is located at the bottom of the reaction tank 100, and the first spray assembly 400 is located at the top of the reaction tank 100. Specifically, the first spray assembly 400 located at the top can ensure that the quartz sand is evenly sprayed at the top of the reaction tank 100. This design is conducive to the quartz sand being fully wetted or processed at the beginning of the reaction, thereby accelerating the reaction speed or improving the processing effect. At the same time, the spray at the top can also help rinse the top inner wall of the reaction tank 100 and reduce material residue. Secondly, the second spray assembly 500 located at the bottom can ensure that the quartz sand at the bottom of the reaction tank 100 can also be fully sprayed. Since the quartz sand may settle to the bottom of the reaction tank 100 during the reaction process, the spray assembly at the bottom can ensure that these materials can also be processed, thereby avoiding the problem of insufficient processing of the bottom material or incomplete reaction. In addition, the spray at the bottom also helps to rinse the bottom of the reaction tank 100, further reducing material residue.

[0038] Further, the specific structure of the second spray assembly 500 is described below. Figure 4 In some embodiments, the second spray assembly 500 includes a second liquid inlet pipe 510 and a second spray pipe 520. The second liquid inlet pipe 510 is disposed in the reaction tank 100 and is connected to the second spray pipe 520. The second spray pipe 520 includes a liquid passage pipe 521 and a nozzle 522. The nozzle 522 is used to spray liquid. The liquid passage pipe 521 is arranged around the center of the reaction chamber 140. The nozzle 522 is connected to the liquid passage pipe 521, and the nozzle 522 is arranged toward the center of the reaction chamber 140. Specifically, after the liquid passage pipe 521 is arranged in an annular shape, the liquid passage pipe 521 can fully cover the reaction chamber 140, so that when the liquid is sprayed from the nozzle 522, the liquid can be sprayed on the quartz sand in an all-round and uniform manner. Among them, a plurality of nozzles 522 can be provided, and the length of each nozzle 522 is not specifically limited. In this way, no matter in the process of the reaction between the quartz sand and the acid solution or in the process of flushing the quartz sand with water, the second spray assembly 500 can evenly flush the liquid on the quartz sand.

[0039] For further information, please refer to Figure 4 In some embodiments, a plurality of vibration assemblies 300 are provided, and the plurality of vibration assemblies 300 are circumferentially arranged around the center of the reaction tank 100. Specifically, by uniformly distributing the plurality of vibration assemblies 300 on the outer wall of the reaction tank 100, uniform and efficient vibration of the quartz sand inside the reaction tank 100 can be achieved. Such uniform vibration helps the quartz sand to become loose, so that it can be quickly discharged from the reaction chamber 140.

[0040] For further information, please refer to Figures 1 to 4In some embodiments, the reaction tank 100 further has a sand flushing port 170, and the pickling equipment 10 further includes a sand flushing pipe 600, which is used to pass liquid, and is disposed in the sand flushing port 170, and one end of the sand flushing pipe 600 is located above the sand discharge port 160. Specifically, by arranging the sand flushing pipe 600 above the sand flushing port 170, water can flow directly into the sand flushing port 170, so that the water flow specifically flushes the quartz sand at the sand flushing port 170, which can quickly discharge the quartz sand from the reaction chamber 140. The sand flushing pipe 600 can be connected to the reaction tank 100 through a support plate.

[0041] For further information, please refer to Figures 1 to 4 In some embodiments, the pickling equipment 10 further includes an acid filter cartridge 700, which is disposed in the reaction chamber 140 and is used to filter the acid solution. After the quartz sand and the acid solution react, the acid solution needs to be discharged first, and then the quartz sand. Specifically, the acid filter cartridge 700 can discharge the acid solution from the reaction chamber 140, and then leave the quartz sand, which can achieve the separation of the acid solution and the quartz sand, thereby facilitating the subsequent quartz sand to enter the next processing step alone. It should be noted that the number of the acid filter cartridges 700 is not specifically limited.

[0042] For further information, please refer to Figures 1 to 4 In some embodiments, the reaction tank 100 includes a first part 110, a second part 120 and a third part 130, the two ends of the second part 120 are connected to the first part 110 and the third part 130 respectively, the sand inlet 150 is located in the first part 110, the sand outlet 160 is located in the third part 130, the cross-sectional area of ​​the third part 130 gradually decreases from the second part 120 to the third part 130, and the cross-sectional area of ​​the first part 110 gradually decreases from the second part 120 to the first part 110. Specifically, the cross-sections of the first part 110 and the third part 130 can be triangular, so that the first part 110 and the second part 120 are arranged in an inverted cone shape, and the third part 130 and the second part 120 are arranged in a conical shape. The arrangement of the first part 110 can facilitate the inflow and distribution of quartz sand, and when the quartz sand is added to the reaction tank 100, it can flow more smoothly and be evenly distributed at the bottom of the reaction tank 100. This design helps to avoid the accumulation or blockage of quartz sand during the addition process, thereby ensuring the smooth progress of the reaction process. The setting of the first part 110 can reduce dead angles, and the quartz sand can be more fully contacted and mixed during the reaction process. In addition, this design also helps to reduce material residue and improve the cleaning effect when cleaning the reaction tank 100. The setting of the third part 130 can make the quartz sand gather near the sand discharge port 160, thereby facilitating the discharge of the quartz sand from the reaction chamber 140. In addition, the setting of the third part 130 can also facilitate the quartz sand to flow to the sand discharge port 160 under the impact of the water flow.

[0043] For further information, please refer to Figures 1 to 4 In some embodiments, a maintenance port 190 is provided on the top of the reaction tank 100, and the maintenance port 190 is used to replace the filter bag or maintain the acid inlet system.

[0044] For further information, please refer to Figures 1 to 4 In some embodiments, the cover plate is connected to the reaction tank 100, and the cover plate can close or open the inspection port 190. The cover plate can be provided with an observation port 200, which is used to observe the material level or the flow state of the acid liquid inside the reaction tank 100.

[0045] For further information, please refer to Figures 1 to 4 In some embodiments, the reaction tank 100 is further provided with an exhaust port 230 , and the exhaust port 230 is used to balance the pressure difference between the inside and outside of the reaction tank 100 .

[0046] For further information, please refer to Figures 1 to 4 In some embodiments, an overflow weir is provided on the reaction tank 100 , the bottom of the overflow weir has an inclination, and an outward overflow port 180 is provided at the lowest point of the overflow weir to facilitate the overflow of the acid liquid out of the reaction tank 100 .

[0047] For further information, please refer to Figures 1 to 4 , the working process of the reaction tank 100 is described below. First, the first liquid inlet 210 and the sand inlet 150 are opened, and the new acid enters the reaction tank 100 through the first liquid inlet 210, and the quartz sand to be washed enters the reaction tank 100 through the sand inlet 150. Secondly, the first liquid inlet 210 and the sand inlet 150 are closed, the second liquid inlet 220 is opened, and the acid pump is started to input the hot acid into the reaction tank 100 from the second liquid inlet 220, so that the hot acid is fully stirred and rinsed with quartz sand. After that, after the pickling reaction is completed, the second liquid inlet 220 and the acid pump are closed, and the acid filter cylinder 700 is opened to allow the acid to flow out of the reaction tank 100 through the acid discharge port. After that, when the acid is exhausted, the acid discharge port is closed, and the sand discharge port 160, the sand flushing port 170, the vibration component 300, the first liquid inlet 210 and the second liquid inlet 220 are opened to allow the acid-washed quartz sand to quickly flow out of the reaction tank 100. Afterwards, when the pickled quartz sand is completely discharged, the sand discharge port 160, the sand flushing port 170, the vibration assembly 300, the first liquid inlet 210 and the second liquid inlet 220 are closed, and the first liquid inlet 210 and the sand inlet 150 are opened. New acid enters the reaction tank 100 through the first liquid inlet 210, and the quartz sand to be washed enters the reaction tank 100 through the sand inlet 150, and the pickling of the next tank of quartz sand is started. This process is repeated to achieve normal and continuous production of large-scale pickling and purification of quartz sand.

[0048] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. Pickling equipment, characterized in that: include: A reaction tank, comprising a reaction chamber, a sand inlet and a sand outlet, wherein the sand inlet and the sand outlet are both connected to the reaction chamber, the sand inlet is located at the top of the reaction tank, and the sand outlet is located at the bottom of the reaction tank; A vibration component is connected to the outer wall of the reaction tank, the vibration component can vibrate, and the vibration component is used to drive the reaction tank to vibrate.

2. The pickling equipment according to claim 1, characterized in that: The reaction tank also has a first liquid inlet and a second liquid inlet connected to the reaction chamber, and the first liquid inlet and the second liquid inlet are both used to introduce liquid into the reaction chamber, wherein the first liquid inlet is located at the top of the reaction tank, and the second liquid inlet is located at the bottom of the reaction tank.

3. The pickling equipment according to claim 2, characterized in that: The pickling equipment also includes a first spray assembly, which includes a first liquid inlet pipe and a first spray pipe. The first spray pipe is provided with a spray port. The first spray pipe is arranged in the reaction chamber. The first liquid inlet pipe passes through the reaction tank and is connected to the first spray pipe.

4. The pickling equipment according to claim 3, characterized in that: A plurality of the first spray pipes are provided, the diameters of the plurality of the first spray pipes are different, and the first spray pipes are distributed around the center of the reaction chamber as a circle.

5. The pickling equipment according to claim 3, characterized in that: The pickling equipment also includes a second spray assembly, which is located at the bottom of the reaction tank, and the first spray assembly is located at the top of the reaction tank.

6. The pickling equipment according to claim 5, characterized in that The second spray assembly includes a second liquid inlet pipe and a second spray pipe, the second liquid inlet pipe is passed through the reaction tank and is connected with the second spray pipe, the second spray pipe includes a liquid passage pipe and a nozzle, the nozzle is used to spray liquid, the liquid passage pipe is arranged around the center of the reaction chamber, the nozzle is connected with the liquid passage pipe, and the nozzle is arranged toward the center of the reaction chamber.

7. The pickling equipment according to claim 1, characterized in that: There are multiple vibration components, and the multiple vibration components are circumferentially arranged around the center of the reaction tank.

8. The pickling equipment according to claim 1, characterized in that: The reaction tank also has a sand flushing port, and the pickling equipment also includes a sand flushing pipe, which is used to pass liquid. The sand flushing pipe is arranged in the sand flushing port, and one end of the sand flushing pipe is located above the sand discharge port.

9. The pickling equipment according to claim 1, characterized in that: The pickling equipment also includes an acid filter cartridge, which is disposed in the reaction chamber and is used for filtering acid solution.

10. The pickling equipment according to claim 1, characterized in that: The reaction tank includes a first part, a second part and a third part, the two ends of the second part are respectively connected to the first part and the third part, the sand inlet is located in the first part, the sand outlet is located in the third part, and the cross-sectional area of ​​the third part gradually decreases from the second part to the third part, and the cross-sectional area of ​​the first part gradually decreases from the second part to the first part.

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