A method for producing edible salt and a recovery energy saving treatment device thereof

Abstract

The present application belongs to the technical field of edible salt production, and particularly relates to a method for producing edible salt and a recovery and energy-saving treatment device thereof, comprising a movable frame, a filter group is arranged above the frame, a thickener is arranged on one side of the frame, the thickener comprises a tank, a primary crystallization assembly is arranged in the tank, a material loosening assembly is arranged on the primary crystallization assembly, a feeding assembly is arranged on the material loosening assembly, a discharging assembly is arranged below the outer side of the material loosening assembly, a filtrate filtering assembly is arranged below the discharging assembly, and a separation assembly with a secondary crystallization function is arranged in the ring cover. The present application has the advantages of reasonable design, simple structure, convenient processing, concentrated crystallization treatment of thickened waste liquid, secondary crystallization treatment of the waste liquid after primary crystallization in the equipment, improved utilization rate of salt production waste liquid, saved production cost, improved work progress, and satisfied use requirement.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of edible salt production, and particularly relates to a method for producing edible salt and a recovery and energy-saving treatment device thereof. BACKGROUND

[0002] Salt has a wide range of uses in industry and is one of the most basic raw materials for the chemical industry, known as the "mother of the chemical industry". The main products of the basic chemical industry, such as hydrochloric acid, caustic soda, soda ash, ammonium chloride, and chlorine gas, are mainly produced using industrial salt as raw material. A large amount of sodium chloride is needed in the organic synthesis industry. In addition, it is also used in soap making, ceramics, glass production, daily chemical industry, oil drilling, drilling fluid, completion fluid, petroleum chemical dehydration fluid, early strength agent for the construction industry, coagulant for producing paint, latex coagulant for the rubber industry, additive for the papermaking industry and deinking of waste paper, inorganic chemical raw material for the chemical industry and sulfate removal agent, coagulant for sodium alginate, prevention of rotting of wheat, apples, Chinese cabbage, food preservative, production of metallic sodium and other sodium compounds, steel heat treatment medium, etc. Salt also has a wide range of uses in water treatment, highway snow removal, refrigeration and cold storage, etc.

[0003] At present, a large amount of salt-making waste liquid is generated in the production process of edible salt, and a certain amount of salt remains in the salt-making waste liquid. In order to achieve the purpose of reducing cost and increasing efficiency, the salt-making waste liquid is usually reprocessed to prepare edible salt. In the prior art, the processing technology for producing refined salt using salt-making waste liquid as raw material mainly includes the following steps: waste liquid filtration, evaporation concentration thickening, cooling crystallization, washing and dehydration, and drying and packaging. For the above production and processing, the salt-making waste liquid is simply sent to the reaction tank after thickening treatment, and the simple cooling treatment is used to realize crystallization. A certain amount of salt inevitably remains in the waste liquid after one-time crystallization. The conventional method is to directly discharge the waste liquid, and some waste liquid is sent back to the reaction tank for crystallization treatment. This not only increases the investment in production equipment, but also makes the processing procedure more complicated and complex, affects the work progress, cannot improve the utilization rate of salt-making waste liquid, and cannot meet the use requirement. SUMMARY

[0004] The present application proposes a method for producing edible salt and a recovery and energy-saving treatment device thereof, which can solve the above technical problems in the production and preparation process of edible salt. The device has the advantages of reasonable design, simple structure, convenient processing, centralized crystallization treatment of thickened waste liquid, secondary crystallization treatment of waste liquid after one-time crystallization in the equipment, fully improved utilization rate of salt-making waste liquid, reduced operation difficulty, reduced equipment investment, saved production cost, fully improved work progress, and effectively meeting the use requirement.

[0005] In order to achieve the above object, the technical scheme adopted by the present application is a method for producing edible salt and a recovery energy-saving treatment device thereof, comprising a movable frame, a vertical frame is arranged on one side above the frame, a filter group is arranged above the vertical frame, a thickener is arranged on one side of the filter group, a crystallization assembly is arranged on one side of the thickener, the crystallization assembly comprises a tank, a primary crystallization assembly is arranged in the tank, a material loosening assembly is arranged on the primary crystallization assembly, a feeding assembly is arranged on the material loosening assembly, a discharging assembly is arranged below the outer side of the material loosening assembly, a filtrate filtering assembly is arranged below the discharging assembly, a ring cover with a concave cross-sectional shape is arranged on the outer side of the tank, a separation assembly with a secondary crystallization function is arranged in the ring cover, the lower output end of the separation assembly is communicated with the lower half of the tank, a driving assembly is arranged below the material loosening assembly, and a material scraping assembly is arranged below the driving assembly.

[0006] As a preferred, the primary crystallization assembly comprises a crystallization cover with a semi-spherical design, an elongated cover with an L-shaped design is arranged below the outer side of the crystallization cover, a matching cover is arranged inside the crystallization cover, and a first cooling assembly is arranged between the crystallization cover and the matching cover.

[0007] As a preferred, the material loosening assembly comprises a rotating shaft arranged through the crystallization cover, a rotating frame is arranged on the outer side of the rotating shaft above the crystallization cover, the rotating frame is composed of an arc-shaped part with an arc-shaped design and a concave part with a concave design, material loosening teeth are arranged on the inner side of the arc-shaped part of the rotating frame close to the crystallization cover, and a material shaking assembly is arranged on the outer side of the rotating shaft opposite to the rotating frame.

[0008] As a preferred, the feeding assembly comprises a feeding pipe arranged above the rotating shaft and with a hollow design, a rotary joint is arranged above the feeding pipe, a receiving pipe is arranged above the rotary joint and stably arranged with the tank, a hollow arc-shaped discharging pipe is arranged below the feeding pipe close to the material loosening assembly, a discharging port is arranged below the discharging pipe, a mounting sleeve is arranged on the outer side of the feeding pipe above, stable rods are arranged on the outer side of the mounting sleeve, and the two stable rods are arranged across in the tank.

[0009] As a preferred, the material shaking assembly comprises a shell, a plurality of monomer-designed bin bodies are arranged in the shell in sequence, a lifting rod is arranged in the bin body, a material shaking plate is arranged below the lifting rod, a stop plate is arranged on the outer side of the lifting rod, a telescopic spring is arranged between the stop plate and the shell, a wedge-shaped stop block is arranged on the upper side of the lifting rod and corresponds to the stable rod.

[0010] As preferred, the discharging assembly comprises a ring shell connected with the elongated cover, a first rotating shaft is arranged in the ring shell, a rotating plate is arranged outside the first rotating shaft, a second rotating shaft and a third rotating shaft are respectively arranged on the ring shell outside the first rotating shaft, a first flap is arranged on the second rotating shaft, a second flap is arranged on the third rotating shaft, the first flap and the second flap are centrally symmetric about the geometric center of the first rotating shaft, a key-shaped plate is arranged outside the first rotating shaft, a connecting plate is arranged outside the second rotating shaft and the third rotating shaft, a connecting rod is arranged between one end of the connecting plate and the key-shaped plate, a key-shaped groove is arranged in the lower part of the key-shaped plate, the filtrate filtering assembly comprises a filtering ring net connected with the lower part of the ring shell, an elongated tube is arranged below the filtering ring net, a flap valve is arranged inside the connection between the filtering ring net and the elongated tube, a conical collecting cover is arranged outside the elongated tube, a groove is arranged in the tank body corresponding to the filtrate filtering assembly, and a partition plate is arranged in the ring cover corresponding to the groove.

[0011] As preferred, the discharging assembly comprises a ring shell connected with the elongated cover, a first rotating shaft is arranged in the ring shell, a rotating plate is arranged outside the first rotating shaft, a second rotating shaft and a third rotating shaft are respectively arranged on the ring shell outside the first rotating shaft, a first flap is arranged on the second rotating shaft, a second flap is arranged on the third rotating shaft, the first flap and the second flap are centrally symmetric about the geometric center of the first rotating shaft, a key-shaped plate is arranged outside the first rotating shaft, a connecting plate is arranged outside the second rotating shaft and the third rotating shaft, a connecting rod is arranged between one end of the connecting plate and the key-shaped plate, a key-shaped groove is arranged in the lower part of the key-shaped plate, the filtrate filtering assembly comprises a filtering ring net connected with the lower part of the ring shell, an elongated tube is arranged below the filtering ring net, a flap valve is arranged inside the connection between the filtering ring net and the elongated tube, a conical collecting cover is arranged outside the elongated tube, a groove is arranged in the tank body corresponding to the filtrate filtering assembly, and a partition plate is arranged in the ring cover corresponding to the groove.

[0012] As preferred, the discharging assembly comprises a ring shell connected with the elongated cover, a first rotating shaft is arranged in the ring shell, a rotating plate is arranged outside the first rotating shaft, a second rotating shaft and a third rotating shaft are respectively arranged on the ring shell outside the first rotating shaft, a first flap is arranged on the second rotating shaft, a second flap is arranged on the third rotating shaft, the first flap and the second flap are centrally symmetric about the geometric center of the first rotating shaft, a key-shaped plate is arranged outside the first rotating shaft, a connecting plate is arranged outside the second rotating shaft and the third rotating shaft, a connecting rod is arranged between one end of the connecting plate and the key-shaped plate, a key-shaped groove is arranged in the lower part of the key-shaped plate, the filtrate filtering assembly comprises a filtering ring net connected with the lower part of the ring shell, an elongated tube is arranged below the filtering ring net, a flap valve is arranged inside the connection between the filtering ring net and the elongated tube, a conical collecting cover is arranged outside the elongated tube, a groove is arranged in the tank body corresponding to the filtrate filtering assembly, and a partition plate is arranged in the ring cover corresponding to the groove.

[0013] As preferred, the discharging assembly comprises a ring shell connected with the elongated cover, a first rotating shaft is arranged in the ring shell, a rotating plate is arranged outside the first rotating shaft, a second rotating shaft and a third rotating shaft are respectively arranged on the ring shell outside the first rotating shaft, a first flap is arranged on the second rotating shaft, a second flap is arranged on the third rotating shaft, the first flap and the second flap are centrally symmetric about the geometric center of the first rotating shaft, a key-shaped plate is arranged outside the first rotating shaft, a connecting plate is arranged outside the second rotating shaft and the third rotating shaft, a connecting rod is arranged between one end of the connecting plate and the key-shaped plate, a key-shaped groove is arranged in the lower part of the key-shaped plate, the filtrate filtering assembly comprises a filtering ring net connected with the lower part of the ring shell, an elongated tube is arranged below the filtering ring net, a flap valve is arranged inside the connection between the filtering ring net and the elongated tube, a conical collecting cover is arranged outside the elongated tube, a groove is arranged in the tank body corresponding to the filtrate filtering assembly, and a partition plate is arranged in the ring cover corresponding to the groove.

[0014] As preferred, the edible salt is produced by the recovery energy-saving treatment device for producing edible salt, which comprises the following preparation steps:

[0015] S1: the salt-making waste liquid is put into a filtering group to be filtered to increase the concentration of the salt-making waste liquid as a reuse mother liquor;

[0016] S2: the reuse mother liquor obtained in the step S1 is sent to a thickener to be heated and evaporated to generate a high-concentration daughter liquid;

[0017] S3: the daughter liquid obtained in the step S2 is put into a crystallization assembly to be cooled and crystallized to generate crystallized salt and post-crystallization waste liquid;

[0018] The step S3 further comprises the following steps: primary crystallization, primary crystallization waste liquid recrystallization, crystalline collection of the primary crystallization and the recrystallization, and post-crystallization waste liquid leading-out:

[0019] S3.1: primary crystallization: the high-concentration daughter liquid is sprayed on a primary crystallization assembly through a feeding assembly, and the daughter liquid is subjected to primary crystallization work in a low-temperature environment formed by a first cooling assembly;

[0020] S3.2: primary crystallization waste liquid recrystallization: the daughter liquid after the primary crystallization is sent to a separation assembly through a filtrate filtering assembly, and subjected to secondary crystallization work in a low-temperature environment formed by a second cooling assembly in the separation assembly;

[0021] S3.3: crystalline collection: the crystalline after the primary crystallization is collected by a sparse assembly and falls into a tank through a discharging assembly, and the separation assembly separates the secondary crystallization crystalline and the waste liquid by using a blowing pipe while carrying out the secondary crystallization work, and the secondary crystallization crystalline is collected in the tank;

[0022] S3.4: post-crystallization waste liquid leading-out: the waste liquid is collected by a liquid discharge cover of the separation assembly and led out to the outside through a liquid collecting pipe;

[0023] S4: the crystallized salt slurry obtained in the step S3 is poured into a salt washing device to be washed by saturated halogen, and the washed crystallized salt slurry is introduced into a settler to be thickened, and then introduced into a cyclone to be dewatered in a centrifuge to form wet salt;

[0024] S5: the wet salt formed after the dewatering in the step S4 is dried by a dryer and then sent into a salt bin to wait for packaging.

[0025] Compared with the prior art, the application has the following advantages and positive effects:

[0026] The application provides a method for producing edible salt and a recycling energy-saving treatment device thereof, which utilizes a set crystallization assembly to receive thickened waste liquid and convey the thickened waste liquid to a primary crystallization assembly through a feeding assembly. The feeding assembly can convey the material to the primary crystallization assembly in a ring-shaped spraying manner, which can realize feeding of the material and relatively improve the crystallization precipitation process, and meet the use requirement. The set material dispersing assembly can collect the precipitated crystals and guide the crystals to a discharging assembly, which provides convenience for subsequent processing. In addition, the material dispersing assembly cooperated with the material dispersing assembly can ensure sufficient discharge of the precipitated crystals and guarantee the comprehensiveness of the collection. The set discharging assembly is linked with a driving assembly to realize intermittent discharge of the material, and separates the waste liquid and the crystals through a filtrate filtering assembly, which guarantees convenient collection of the crystals. The set separation assembly can realize secondary crystallization treatment on the filtered waste liquid and separate and discharge the waste liquid and the crystals after the secondary crystallization, which greatly improves the use functionality of the device. The set material scraping assembly can discharge the collected crystals, which facilitates smooth development of subsequent processing. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0028] Figure 1 It is a structural schematic view of the method for producing edible salt and the recycling energy-saving treatment device thereof.

[0029] Figure 2 It is a structural schematic view of the crystallization assembly provided by the application.

[0030] Figure 3 It is a partial internal structure schematic view of the crystallization assembly provided by the application.

[0031] Figure 4 It is a local structure enlarged schematic view of the crystallization assembly provided by the application.

[0032] Figure 5 It is an internal structure front view of the partial mechanism of the crystallization assembly provided by the application.

[0033] Figure 6 Another perspective of the internal structure of the crystallization assembly provided by the present application is shown in the following figure:

[0034] Figure 7 An exploded view of the structure of the liquid outlet assembly and the filtrate filtering assembly is shown in the following figure:

[0035] Figure 8 Another perspective of the structure of the liquid outlet assembly and the filtrate filtering assembly is shown in the following figure:

[0036] In the above figures, 1 is a frame body, 1a is a stand, 2 is a filter group, 3 is a thickener, 4 is a crystallization assembly, 5 is a tank body, 51 is a slot, 6 is a primary crystallization assembly, 61 is a crystallization cover, 62 is an extension cover, 63 is a matching cover, 64 is a first cooling assembly, 7 is a material loosening assembly, 71 is a rotating rod, 72 is a rotating frame, 73 is a material loosening tooth, 8 is a feeding assembly, 81 is a feeding pipe, 82 is a rotary joint, 83 is a receiving pipe, 84 is a discharging pipe, 841 is a discharging port, 85 is a mounting sleeve, 86 is a stabilizing rod, 9 is a discharging assembly, 91 is a ring shell, 92 is a first rotating shaft, 93 is a rotating plate, 94 is a second rotating shaft, 941 is a first turning plate, 95 is a third rotating shaft, 951 is a second turning plate, 96 is a key-shaped plate, 961 is a key-shaped slot, 97 is a connecting plate, 98 is a connecting rod, 10 is a filtrate filtering assembly, 101 is a filtering ring net, 102 is an extension pipe, 103 is a turning plate valve, 104 is a flow collecting cover, 105 is a partition plate, 11 is a ring cover, 12 is a separation assembly, 121 is a guide cover, 122 is a second cooling assembly, 123 is a gas blowing pipe, 124 is a liquid discharging cover, 125 is a liquid collecting pipe, 1251 is a liquid discharging pipe, 126 is a material discharging cover, 13 is a driving assembly, 131 is a support plate, 132 is a containing cover, 133 is a first support, 134 is a toothed disc, 135 is a second support, 136 is a transmission assembly, 1361 is a transmission gear, 1362 is a rotating disc, 1363 is a positioning rod, 137 is a driving motor, 138 is a driving bevel gear, 139 is a first bevel gear, 1310 is a second bevel gear, 14 is a material scraping assembly, 141 is a driving rod, 142 is a carrier, 143 is a scraping plate, 15 is a material vibrating assembly, 151 is a housing, 1511 is a bin body, 152 is a lifting rod, 153 is a material vibrating plate, 154 is an abutting plate, 155 is a telescopic spring, 156 is an abutting block. DETAILED DESCRIPTION

[0037] In order to enable a more complete understanding of the above-mentioned objects, features and advantages of the present application, the application will be described in further detail below with reference to the accompanying drawings and examples. It is to be noted that the embodiments and features of the application described in the present application can be combined with each other, if not incompatible.

[0038] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details and, therefore, the scope of the present application is not limited to the specific embodiments disclosed.

[0039] Examples, such as Figures 1-8As shown, a method for producing edible salt and its recycling energy-saving treatment device, including movable frame 1, frame 1 above one side is provided with vertical frame 1a, vertical frame 1a above is provided with filter group 2, the filter group 2 set up can be a semi-permeable membrane type filter equipment, one side of the filter group 2 is provided with thickener 3, the establishment of each device component adopts the conventional equipment assembly in the prior art, which can be effectively known to those skilled in the art, and specific details will not be repeated; The embodiment aims to solve the problem of the existing salt making waste liquid crystallization process, specifically: one side of the thickener 3 is provided with crystallization assembly 4, which receives the thickened waste liquid and sends it to the primary crystallization assembly 6 through the feed assembly 8, the crystallization assembly 4 includes a tank 5, a primary crystallization assembly 6 is arranged in the tank 5, which uses the cooling crystallization method to precipitate the crystals in the waste liquid, realizing the reuse of waste liquid, the primary crystallization assembly 6 is provided with a material removal assembly 7, which can concentrate the precipitated crystals and guide them towards the discharge assembly 9, providing convenience for subsequent processing work, in addition, the material removal assembly 7 is used in cooperation with the material removal assembly 7, which can ensure the full discharge of the precipitated crystals and guarantee the comprehensiveness of the collection, the material removal assembly 7 is provided with a feed assembly 8, which can deliver the material to the primary crystallization assembly 6 in a ring-shaped spray manner, on the one hand, it completes the feeding of the material, on the other hand, it can relatively improve the crystallization precipitation process, meet the use demand, the outer side of the material removal assembly 7 is provided with a discharge assembly 9, which is linked with a driving assembly 13 to realize the discharge of the material in an intermittent manner, and separates the waste liquid and the crystals through the filtrate filter assembly 10 to ensure the convenient collection of the crystals, the lower side of the discharge assembly 9 is provided with a filtrate filter assembly 10, the outer side of the tank 5 is provided with a ring cover 11 with a concave cross-sectional design, the ring cover 11 is provided with a separation assembly 12 with secondary crystallization function, the lower output end of the separation assembly 12 is communicated with the lower half of the tank 5, on the one hand, it can perform secondary crystallization treatment on the filtered waste liquid, on the other hand, it can separate and discharge the waste liquid and the crystals after secondary crystallization, greatly improving the functionality of the device, the lower side of the material removal assembly 7 is provided with a driving assembly 13, the driving assembly 13 can provide sufficient driving power for the operation of each device assembly, especially it can realize the linkage between devices, improve the practicability of the device, the lower side of the driving assembly 13 is provided with a material removal assembly 14, which can discharge the collected crystals, facilitating the smooth development of subsequent processing work;

[0040] In the above process: the established crystallization assembly 4 is used to receive the thickened waste liquid and deliver it to the primary crystallization assembly 6 through the feed assembly 8. The feed assembly 8 can deliver the material to the primary crystallization assembly 6 in a circular spray pattern, which not only completes the feeding of the material but also relatively improves the crystallization process to meet the use requirements. The established material removal assembly 7 can collect the precipitated crystals and guide them to the discharge assembly 9, providing convenience for subsequent processing. In addition, the material removal assembly 7 is used in conjunction with the material removal assembly 15 to ensure the complete discharge of the precipitated crystals and guarantee the comprehensiveness of the collection. The established discharge assembly 9 is linked to the drive assembly 13 to realize the discharge of the material in an intermittent manner and separate the waste liquid and crystals through the filtrate filter assembly 10 to ensure the convenient collection of the crystals. The established separation assembly 12 can not only perform secondary crystallization treatment on the filtered waste liquid but also separate and discharge the waste liquid and crystals after secondary crystallization, greatly improving the functionality of the device. The established material removal assembly 14 can discharge the collected crystals to facilitate the smooth development of subsequent processing. The device is designed reasonably, has a simple structure, is easy to process, can concentrate the thickened waste liquid for crystallization, and can continue to perform secondary crystallization treatment on the waste liquid after primary crystallization, thereby improving the utilization rate of the salt-making waste liquid, reducing the operation difficulty, saving equipment investment, saving production costs, improving the work process, and effectively meeting the use requirements.

[0041] To complete the cooling crystallization treatment of the thickened waste liquid, the primary crystallization assembly 6 includes a crystallization cover 61 designed in a semi-spherical shape. The outer side of the crystallization cover 61 is provided with an L-shaped extension cover 62, and the inner side of the crystallization cover 61 is provided with a matching cover 63. The first cooling assembly 64 is arranged between the crystallization cover 61 and the matching cover 63. Specifically, the outer periphery of the crystallization cover 61 can be designed in a smooth or stepped shape. The stepped design can prolong the residence time of the waste liquid to ensure the crystallization effect. The first cooling assembly 64 can use a circulating low-temperature material flow to obtain a low-temperature environment or use a semiconductor refrigeration module to prepare a low-temperature environment. Both of the above methods are conventional means in the prior art and can be established according to different use requirements. The main function is to prepare a low-temperature environment to precipitate crystals from the flowing waste liquid under low-temperature conditions to achieve the purpose of salt-making and meet the use requirements.

[0042] In order to realize the collection of the material after crystallization, the material removal assembly 7 comprises a rotating rod 71 arranged through the crystallization cover 61, a rotating frame 72 is arranged outside the rotating rod 71 above the crystallization cover 61, the rotating frame 72 is composed of an arc-shaped part and a concave part, the inner side of the arc-shaped part of the rotating frame 72 close to the crystallization cover 61 is provided with a material removal tooth 73, and the outer side of the rotating rod 71 opposite to the rotating frame 72 is provided with a material shaking assembly 15, which is specifically described as follows: the driving assembly 13 acts a driving force on the material removal assembly 7, especially on the rotating rod 71, which rotates and drives the rotating frame 72 to rotate, of course, a brush or the like can be arranged on one side of the rotating frame 72 close to the inner side of the crystallization cover 61 and the extension cover 62, which collects the material crystallized out in a brushing manner and collects the material to a position close to the discharging assembly 9, waiting for the subsequent discharging action.

[0043] In order to realize the convenient input of the thickened waste liquid and ensure the smooth development of the crystallization work, the feeding assembly 8 comprises a feeding pipe 81 arranged above the rotating rod 71 and designed in a hollow manner, a rotary joint 82 is arranged above the feeding pipe 81, the rotary joint 82 can make the feeding pipe 81 run together with the material removal assembly 7, especially can provide a convenient condition for the subsequent crystallization work, and the rotary joint 82 is a conventional technical means in the prior art, and the specific working principle and working mode are not described in detail, a receiving pipe 83 is arranged above the rotary joint 82 and stably arranged with the tank 5, a hollow arc-shaped discharge pipe 84 is arranged below the feeding pipe 81 close to the material removal assembly 7, a discharge port 841 is arranged below the discharge pipe 84, and the feeding pipe 81 is stably connected with the upper end of the rotating rod 71, the receiving pipe 83 receives the material discharged from the thickener 3 and transports the material to the feeding pipe 81 through the rotary joint 82, the waste liquid in the feeding pipe 81 is transported to the discharge pipe 84 and finally discharged through the discharge port 841, considering that the feeding pipe 81 rotates, the rotation of the discharge pipe 84 can make the material be sprayed in an arc-shaped manner and fall on the crystallization cover 61, which improves the crystallization work process to a certain extent, in order to further improve the stability of the device, a mounting sleeve 85 is arranged outside the upper side of the feeding pipe 81, a stabilizing rod 86 is arranged outside the mounting sleeve 85, and the two stabilizing rods 86 are arranged transversely in the tank 5, wherein the feeding pipe 81 can rotate relative to the mounting sleeve 85, and the two stabilizing rods 86 can assist the feeding pipe 81 in supporting and ensure the smooth operation of the material shaking assembly 15, thereby improving the linkage effect between the equipment components.

[0044] In order to ensure the smooth flow of the crystal material, and provide convenient conditions for subsequent centralized collection, the material shaking assembly 15 comprises a shell 151, a plurality of single-body designed bin bodies 1511 are sequentially arranged in the shell 151, a lifting rod 152 is arranged in the bin body 1511, a material shaking plate 153 is arranged below the lifting rod 152, a stop plate 154 is arranged outside the lifting rod 152, an extension spring 155 is arranged between the stop plate 154 and the shell 151, a wedge-shaped stop block 156 is arranged above the lifting rod 152 and corresponds to the stabilizing rod 86, and the specific description is that: for the extension spring 155, a limiting rod is arranged outside the shell 151 and arranged in the extension spring 155, and the upper end penetrates the stop plate 154, when the material loosening assembly 7 rotates, the material shaking assembly 15 rotates together, when the stop block 156 of the material shaking assembly 15 moves to the position close to the stabilizing rod 86, the continuous rotation of the stop block 156 is pressed down by the stabilizing rod 86, and the lifting rod 152 is driven to move downward, especially the material shaking plate 153 can act on the crystallization cover 61, of course, the shape of the material shaking plate 153 can be arranged as an arc shape matched with the outer periphery of the crystallization cover 61, so that after the material shaking plate 153 acts on the crystallization cover 61, a certain vibration effect is generated on the material on the crystallization cover 61, thereby providing convenient conditions for the subsequent material loosening assembly 7 to collect the crystallization material, and improving the work progress.

[0045] In order to realize the convenient export of the material after the first crystallization, so as to carry out the subsequent secondary crystallization work smoothly, the discharge assembly 9 includes the ring shell 91 connected with the extension cover 62, the first rotating shaft 92 is arranged in the ring shell 91, the rotating plate 93 is arranged outside the first rotating shaft 92, the second rotating shaft 94 and the third rotating shaft 95 are further arranged on the ring shell 91 outside the first rotating shaft 92, the first flap 941 is arranged on the second rotating shaft 94, the second flap 951 is arranged on the third rotating shaft 95, the first flap 941 and the second flap 951 are centrally symmetric about the geometric center of the first rotating shaft 92, the key-shaped plate 96 is arranged outside the first rotating shaft 92, the connecting plate 97 is arranged outside the second rotating shaft 94 and the third rotating shaft 95, the connecting plate 97 is arranged between the key-shaped plate 96 and one end of the connecting plate 97, and the connecting plate 97 is rotatably connected with the connection parts of the first rotating shaft 92, the second rotating shaft 94 and the third rotating shaft 95 at both ends, so as to ensure that the rotation of the first rotating shaft 92 can act on the connecting rod 98 and drive the second rotating shaft 94 and the third rotating shaft 95 to rotate respectively, the key-shaped groove 961 is arranged in the key-shaped plate 96, and the specific description is as follows: for the established key-shaped plate 96, it can receive driving power to rotate, of course, by using the transmission assembly 136, when it acts on the key-shaped plate 96, it can make reciprocating rotation action, and then acts on the first rotating shaft 92, so that the rotating plate 93 is opened and closed, and the effective falling of the material is ensured, when the key-shaped plate 96 rotates, the connecting rod 98 runs with it and acts on the connecting plate 97, so as to drive the second rotating shaft 94 or the third rotating shaft 95 to rotate in the pulling mode, and then acts on the first flap 941 and the second flap 951 respectively, in this way, the rotating plate 93, the first flap 941 and the second flap 951 rotate together, except that the rotating directions of the first flap 941 and the second flap 951 are opposite, but they can all make the ring shell 91 be opened, so as to provide convenient conditions for the export of the crystal and waste liquid.Further, in order to realize the separation of the crystal and waste liquid, the filtrate filtering assembly 10 comprises a filtering ring net 101 connected below the ring shell 91, an elongated pipe 102 is arranged below the filtering ring net 101, a flap valve 103 is arranged inside the connection between the filtering ring net 101 and the elongated pipe 102, a collecting cover 104 in the shape of a cone is arranged outside the elongated pipe 102, a groove hole 51 is arranged in the tank body 5 corresponding to the filtrate filtering assembly 10, a partition plate 105 is arranged in the ring cover 11 corresponding to the groove hole 51, for the position of the partition plate 105, a driving cylinder can be arranged above the ring cover 11 to facilitate the vertical movement and adjustment, which is specifically described as follows: for the flap valve 103, it is a conventional technical means in the prior art, which is generally arranged in the pipeline to realize the on-off function, and its specific working principle and operation mode will not be repeated, in the embodiment, when the flap valve 103 blocks the elongated pipe 102, the upper end surface is just at the connection between the filtering ring net 101 and the elongated pipe 102, that is, when the crystal and waste liquid are guided into the filtrate filtering assembly 10, the flap valve 103 blocks them, and the filtrate is guided out through the filtering ring net 101, and the crystal is left, when the amount of crystal is large, the flap valve 103 is controlled to operate to open the elongated pipe 102, so that the crystal falls into the lower part of the tank body 5, of course, when the flap valve 103 is opened, the corresponding discharge assembly 9 is in a closed state to prevent the filtrate from falling together, of course, the opening and closing states of the discharge assembly 9 are staggered, and the on-off states of the corresponding flap valve 103 are also staggered, further improving the rationality of the device, in this way, the crystal can be concentrated and guided out, and for the discharged filtrate, it flows downward through the collecting cover 104 and is guided into the separation assembly 12 through the groove hole 51, waiting for subsequent processing.

[0046] In order to realize the separation of the crystal and waste liquid in the secondary crystallization process, the separation assembly 12 comprises a guide cover 121 arranged in the inside of the ring cover 11 and designed in a hollow conical shape, a second cooling assembly 122 is arranged between the ring cover 11 and the guide cover 121, a blowing pipe 123 is arranged in the ring cover 11 and penetrates into the guide cover 121, an arc-shaped discharge cover 124 is arranged above the ring cover 11, a plurality of discharge covers 124 are arranged above the liquid collecting pipe 125, the outer side of the liquid collecting pipe 125 is provided with a discharge pipe 1251, an inclined arc-shaped discharge cover 126 is arranged below the ring cover 11, the upper side of the discharge cover 126 is communicated with the inside of the guide cover 121, and the lower side of the discharge cover 126 is communicated with the lower side of the tank body 5. Specifically described, the waste liquid after the first crystallization is discharged from the filter ring net 101 of the filtrate filtering assembly 10 and is guided into the guide cover 121 from the tank hole 51 of the tank body 5 through the flow cover 104. At this time, the waste liquid transported into the guide cover 121 is subjected to a secondary cooling crystallization process under the action of the second cooling assembly 122 and precipitates crystalline salt. Subsequently, the external blowing assembly is controlled to blow from the blowing pipe 123 towards the inside of the guide cover 121. Of course, the temperature of the gas blown into the inside is the same as or lower than the temperature of the waste liquid precipitated by the secondary cooling crystallization. In this way, the precipitation process of the waste liquid can be improved to a certain extent. When the blowing gas enters into the guide cover 121, the blowing of the gas flow causes the waste liquid after crystallization to rotate in the guide cover 121. Especially, the blowing gas is tangentially inputted, and the lower side of the guide cover 121 is designed in a conical shape. By using this design, when the waste liquid is fully blown in the guide cover 121, it is guided out from the discharge cover 126 and is collected by the liquid collecting pipe 125. Finally, it is guided out from the discharge pipe 1251. As for the crystalline precipitated by the secondary precipitation, it has a certain weight and is limited by the conical design of the guide cover 121. The running path of the above-mentioned crystalline and waste liquid is towards the position of the discharge cover 126 for discharging, and then is collected in the lower side of the tank body 5. Finally, it is guided out. By using the separation assembly 12, the waste liquid and the crystal after the secondary crystallization can be separated. The waste liquid can be guided out, and the crystal can be collected with the material after the first crystallization and then guided out. The use functionality of the device is greatly improved, and the use requirement is met.

[0047] In order to guarantee the smooth operation of the material distributing assembly 7, the material discharging assembly 9 and the material scraping assembly 14, especially to ensure the effective input of driving power, specifically, the driving assembly 13 comprises a support plate 131 arranged in the tank 5, a containing cover 132 is arranged above the support plate 131, a first support 133 in L-shaped design is arranged above the containing cover 132, a gear disc 134 is arranged above the first support 133 and connected with the rotating rod 71, a second support 135 is arranged outside the rotating rod 71, a transmission assembly 136 is arranged on the first support 133 and the second support 135 respectively, the transmission assembly 136 comprises a transmission gear 1361 engaged with the gear disc 134, a rotating disc 1362 is arranged on the other side of the transmission gear 1361, a positioning rod 1363 is arranged on the rotating disc 1362 and matched with the key-shaped groove 961, of course, the positioning rod 1363 is arranged eccentrically on one side of the rotating disc 1362, a driving motor 137 is arranged in the containing cover 132, a driving bevel gear 138 is arranged at the output end of the driving motor 137, the rotating rod 71 penetrates through the containing cover 132 below and the first bevel gear 139 is arranged at the lower end of the rotating rod 71, the second bevel gear 1310 is arranged below the driving bevel gear 138, the first bevel gear 139 and the second bevel gear 1310 are engaged with the driving bevel gear 138 respectively, specifically, the driving motor 137 arranged runs and acts on the driving bevel gear 138, the rotation of the driving bevel gear 138 is engaged with the first bevel gear 139 and the second bevel gear 1310 respectively, wherein, the rotation of the second bevel gear 1310 will act the driving power on the scraping assembly, the collection of the material is completed, the rotation of the first bevel gear 139 will act the driving power on the rotating rod 71, in this way, the rotation of the rotating rod 71 will act the driving power on the material conveying assembly, so that the material on the primary crystallization assembly 6 can be collected and concentrated and then discharged, in addition, the driving bevel gear 138 is also connected with the gear disc 134, similarly, the rotation of the gear disc 134 will act the driving power on the transmission assembly 136, that is, the rotation of the gear disc 134 acts on the transmission gear 1361 and drives the rotating disc 1362 to rotate, the positioning rod 1363 arranged on the rotating disc 1362 can rotate with the rotating disc 1362, and then acts on the key-shaped plate 96, limited by the arrangement of the key-shaped groove 961 in the key-shaped plate 96, the rotation of the positioning rod 1363 can drive the key-shaped plate 96 to reciprocate, and then realize the intermittent opening and closing of the material discharging assembly 9, so as to ensure the smooth discharge of waste liquid and crystals, the linkage between the device and the equipment is strong, and the operation is simple and convenient.

[0048] In order to ensure that the material is fully discharged after crystallization, the scraping assembly 14 includes a driving rod 141, and the upper part thereof is connected with the second bevel gear 1310, the outer side of the driving rod 141 is provided with a triangularly designed carrier 142, and the end of the carrier 142 is provided with a scraper 143. Specifically, the established scraping assembly 14 is driven to rotate by the driving assembly 13. When the driving assembly 13 operates, the driving power acts on the driving rod 141 through the second bevel gear 1310. The rotation of the driving rod 141 drives the carrier 142 and the scraper 143 to rotate in the tank body 5, thereby scraping and collecting the materials collected in the tank body 5, and finally discharging the materials from the bottom of the tank body 5, so as to facilitate the subsequent processing and machining of the crystals and meet the use requirements.

[0049] In order to meet the principles of sustainable development and cost saving in the factory building, the recycling and energy-saving treatment device for producing edible salt is used to produce edible salt, which includes the following preparation steps:

[0050] S1: The salt-making waste liquid is poured into the filter group for filtration to increase the concentration of the salt-making waste liquid as a reused mother liquor;

[0051] Specifically, the filter group is used to perform preliminary filtration treatment on the salt-making waste liquid, which can increase the concentration of the salt-making waste liquid to obtain an initial processing mother liquor;

[0052] S2: The reused mother liquor obtained in the step S1 is sent to the thickener 3 for heating and evaporation to generate a high-concentration sub-liquid;

[0053] Specifically, this step mainly uses the heating and evaporation method to evaporate the water in the waste liquid, thereby further forming a high-concentration waste liquid, which provides a prerequisite for the subsequent crystallization work;

[0054] S3: The sub-liquid obtained in the step S2 is poured into the crystallization assembly 4 for cooling and crystallization to generate crystalline salt and post-crystallization waste liquid;

[0055] The step S3 further includes the following steps: primary crystallization, primary crystallization waste liquid recrystallization, crystallization and recrystallization of the crystal collection, and post-crystallization waste liquid discharge:

[0056] S3.1: Primary crystallization: The high-concentration sub-liquid is sprayed on the primary crystallization assembly 6 through the feeding assembly 8, and the low-temperature environment formed by the first cooling assembly 64 enables the sub-liquid to perform primary crystallization work;

[0057] S3.2: Primary crystallization waste liquid recrystallization: The sub-liquid after primary crystallization is sent to the separation assembly 12 through the filtrate filtering assembly 10, and the low-temperature environment formed by the second cooling assembly 122 in the separation assembly 12 enables the sub-liquid to perform secondary crystallization work;

[0058] S3.3: Crystal collection: the crystal after the first crystallization is collected by the sparse material assembly 7, and falls into the tank 5 through the discharge assembly 9. The separation assembly 12 separates the secondary crystallization crystal and waste liquid by using the blowing pipe 123 while carrying out the secondary crystallization work, and makes the secondary crystallization crystal gather in the tank 5;

[0059] S3.4: Crystallized waste liquid is discharged: the waste liquid is collected by the discharge cover 124 of the separation assembly 12 and is discharged to the outside through the liquid collecting pipe 125;

[0060] Specifically, in the above process, the filtered and thickened waste liquid is concentrated and crystallized, and the waste liquid after the first crystallization is further subjected to secondary crystallization treatment in the equipment, which reduces the operation difficulty and reduces the equipment investment. At the same time, the waste liquid can be subjected to twice crystallization treatment in one equipment, which fully improves the utilization rate of the waste liquid, saves the production cost, fully improves the work progress, and effectively meets the use requirement;

[0061] S4: The crystalline salt slurry obtained in the S3 step is poured into a salt washing device and washed with saturated halogen. After washing, the crystalline salt slurry is introduced into a settling device, thickened, and then introduced into a cyclone and a centrifuge to form wet salt after dehydration;

[0062] S5: The wet salt formed after dehydration in the S4 step is dried by a dryer and then sent to a salt bin for packaging.

[0063] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any person skilled in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belongs to the protection scope of the present application.

Claims

1. A recycling and energy-saving treatment device for producing edible salt, comprising a movable frame, an upright frame disposed on one side of the frame, a filter assembly disposed on the upright frame, and a thickener disposed on one side of the filter assembly, characterized in that, A crystallization component is provided on one side of the thickener. The crystallization component includes a tank body, a primary crystallization component is provided inside the tank body, a material discharge component is provided on the primary crystallization component, a feeding component is provided on the material discharge component, a discharge component is provided below the outer side of the material discharge component, and a filtrate filtration component is provided below the discharge component. A concave-shaped annular cover is provided on the outer side of the tank body. A separation component with secondary crystallization function is provided inside the annular cover. The lower output end of the separation component is connected to the lower half of the tank body. A driving component is provided below the material discharge component, and a scraping component is provided below the driving component. The primary crystallization component includes a hemispherical crystallization cover. An L-shaped extension cover is provided below the outer side of the crystallization cover. A mating cover is provided inside the crystallization cover. A first cooling component is provided between the crystallization cover and the mating cover. The discharge component includes an annular shell connected to the extension cover. A first rotating shaft is provided inside the shell, and a rotating plate is provided outside the first rotating shaft. A second rotating shaft and a third rotating shaft are also provided on the annular shell outside the first rotating shaft. A first flap is provided on the second rotating shaft, and a second flap is provided on the third rotating shaft. The first flap and the second flap are centrally symmetrical about the geometric center of the first rotating shaft. A key-shaped plate is provided outside the first rotating shaft, and a connecting plate is provided outside the second and third rotating shafts. A connecting rod is provided between one end of the connecting plate and the key-shaped plate. A key-shaped groove is opened in the lower part of the key-shaped plate. The filtrate filtration assembly includes a filter ring mesh connected to the lower part of the annular shell. An extension tube is provided below the filter ring mesh. A flap valve is provided inside the connection between the filter ring mesh and the extension tube. A flow collector with a conical design is provided outside the extension tube. A slot is opened in the tank body corresponding to the filtrate filtration assembly. A partition plate is provided in the annular shroud corresponding to the slot.

2. The energy-saving recycling treatment device for producing edible salt according to claim 1, characterized in that, The material feeding assembly includes a rotating rod that runs through the crystallization hood. A rotating frame is provided on the outer side of the rotating rod located above the crystallization hood. The rotating frame consists of an arc-shaped part and a concave part. Material feeding teeth are provided on the inner side of the arc-shaped part of the rotating frame near the crystallization hood. A vibrating material assembly is provided on the outer side of the rotating rod opposite to the rotating frame.

3. The energy-saving recycling treatment device for producing edible salt according to claim 2, characterized in that, The feeding assembly includes a hollow feeding pipe positioned above the rotating rod. A rotary joint is located above the feeding pipe, and a receiving pipe is located above the rotary joint and is stably positioned with the tank body. A hollow arc-shaped discharge pipe is located below the feeding pipe near the discharging assembly, and a discharge port is located below the discharge pipe. An mounting sleeve is located on the outer side of the upper part of the feeding pipe, and a stabilizing rod is located on the outer side of the mounting sleeve. The two stabilizing rods are positioned horizontally across the tank body.

4. The energy-saving recycling treatment device for producing edible salt according to claim 3, characterized in that, The vibrating material assembly includes a housing, inside which are arranged multiple single-unit chambers. A lifting rod is installed inside each chamber, a vibrating plate is installed below the lifting rod, a stop plate is installed on the outside of the lifting rod, a telescopic spring is installed between the stop plate and the housing, and a wedge-shaped stop block is installed above the lifting rod, corresponding to the stabilizing rod.

5. The energy-saving recycling treatment device for producing edible salt according to claim 4, characterized in that, The separation assembly includes a guide cover with a hollow cone shape located inside the annular cover. A second cooling assembly is disposed between the annular cover and the guide cover. An air blowing pipe is disposed inside the annular cover and extends into the guide cover. An arc-shaped drain cover is disposed above the annular cover. A liquid collecting pipe is disposed above the plurality of drain covers. A drain pipe is disposed outside the liquid collecting pipe. A tilted arc-shaped discharge cover is disposed below the annular cover. The upper part of the discharge cover is connected to the inner side of the guide cover, and the lower part is connected to the lower part of the tank.

6. The energy-saving recycling treatment device for producing edible salt according to claim 5, characterized in that, The drive assembly includes a support plate installed inside the tank, a receiving cover above the support plate, a first L-shaped bracket above the receiving cover, a geared disc above the first bracket and connected to a rotating rod, a second bracket outside the rotating rod, and transmission assemblies on the first and second brackets respectively. The transmission assemblies include a transmission gear meshing with the geared disc, a turntable on the other side of the transmission gear, a positioning rod on the turntable adapted to a keyway, a drive motor inside the receiving cover, a driving bevel gear at the output end of the drive motor, the rotating rod penetrating the receiving cover below, a first bevel gear at the lower end of the rotating rod, and a second bevel gear below the driving bevel gear, with the first and second bevel gears meshing with the driving bevel gear respectively.

7. The energy-saving recycling treatment device for producing edible salt according to claim 6, characterized in that, The scraping assembly includes a drive rod connected to a second bevel gear at its top. A triangular frame is provided on the outer side of the drive rod, and a scraper is provided at the end of the frame.

8. A method for producing edible salt, characterized in that, The production and preparation of edible salt using the energy-saving recycling and processing device for producing edible salt as described in claim 7 includes the following preparation steps: S1: The salt production waste liquid is put into the filter group for filtration to increase the concentration of the salt production waste liquid and use it as a mother liquor for reuse. S2: The reused mother liquor obtained in step S1 is transported to a thickener for heating and evaporation to generate a high-concentration daughter liquor; S3: The liquid obtained in step S2 is added to the crystallization component for cooling and crystallization to generate crystalline salt and waste liquid after crystallization. The S3 step further includes primary crystallization, recrystallization of the primary crystallization waste liquid, collection of crystals from the primary crystallization and recrystallization, and discharge of the waste liquid after crystallization. S3.1: Primary crystallization: The high-concentration sub-liquid is sprayed onto the primary crystallization component through the feeding component. With the help of the low-temperature environment created by the first cooling component, the sub-liquid undergoes primary crystallization. S3.2: Recrystallization of primary crystallization waste liquid: The liquid after primary crystallization is transported to the separation component through the filtrate filtration component, and secondary crystallization is carried out in the separation component with the help of the low temperature environment formed by the second cooling component; S3.3: Crystal collection: The material feeding component collects the crystals after primary crystallization and discharges them into the tank through the material discharge component. While carrying out secondary crystallization, the separation component uses an air blowing pipe to separate the secondary crystals from the waste liquid and collect the secondary crystals in the tank. S3.4: Waste liquid discharge after crystallization: The waste liquid is collected by the drain hood of the separation component and discharged to the outside through the collection pipe; S4: Pour the crystallized salt slurry obtained in step S3 into a salt washing machine and wash it with saturated brine. After washing, the crystallized salt slurry is introduced into a settling tank for thickening and then enters a centrifuge through a hydrocyclone to dehydrate and form wet salt. S5: The wet salt obtained after dehydration in step S4 is dried in a dryer and then sent to the salt silo for packaging.

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