Preparation method of eggshell fruit and vegetable cleaner and eggshell drying equipment thereof

Abstract

The invention discloses an eggshell fruit and vegetable cleaning agent preparation method and eggshell drying equipment thereof, and relates to the technical field of fruit and vegetable cleaning agents, the eggshell fruit and vegetable cleaning agent preparation method comprises the following steps: S1, eggshells are crushed and dried; s2, part of eggshells are taken and subjected to calcination treatment for 2 h at the temperature of 600-900 DEG C, the calcined eggshells are ground, and calcined eggshell powder is obtained; s3, taking part of eggshells, performing grinding treatment, and then performing sterilization so as to obtain non-calcined eggshell powder; s4, stirring and mixing 20-36 parts of non-calcined eggshell powder and 2-6 parts of citric acid to obtain mixed powder A; s5, stirring and mixing 40-53 parts of calcined eggshell powder and 8-10 parts of corn extract to obtain mixed powder B; and S6, adding 3-5 parts of montmorillonite and 3-6 parts of table salt into the mixed powder A, slowly adding the mixed powder B into the mixed powder A, continuously stirring, and drying. The preparation method has the effect of improving the pesticide residue adsorption effect of the eggshell fruit and vegetable cleaning agent.

Description

Technical Field

[0001] The present application relates to the technical field of fruit and vegetable cleaners, and in particular to a method for preparing an eggshell fruit and vegetable cleaner and an eggshell drying device thereof. Background Art

[0002] In egg processing plants, egg shells are often discarded as waste left over from egg product processing. Egg shells are rich in calcium carbonate and have certain utilization value, so the reuse of egg shells can bring huge value to egg processing companies.

[0003] As people pay more attention to food safety, pesticide residues on the surface of fruits and vegetables have also received attention. However, it is difficult to remove pesticide residues on the surface of fruits and vegetables by traditional water washing or soaking with detergent. When using detergent for treatment, if the detergent is not fully cleaned, the fruits and vegetables will have detergent residues. In this environment, eggshell fruit and vegetable cleaning products that utilize the adsorption of substances treated with calcium carbonate in eggshells have emerged. Compared with detergent, it has the advantages of better adsorption and removal of pesticide residues, fruit wax and other substances, more natural and safer raw materials, and will not pollute the environment and will not leave additional chemical residues on fruits and vegetables.

[0004] Existing eggshell fruit and vegetable cleaner products often grind eggshells into powder and then add them directly for use. However, the eggshell fruit and vegetable cleaner products made in this way have poor adsorption properties for pesticides, fruit waxes and other substances. In order to give full play to the adsorption effect of substances produced by eggshell raw materials. In addition, eggshells are a low-cost raw material, and the entire processing link needs to be strictly controlled for energy consumption costs to increase the actual profit value of eggshell fruit and vegetable cleaner products. Summary of the invention

[0005] In order to improve the defect that the existing eggshell fruit and vegetable cleaner products fail to fully exert the adsorption effect of substances in the eggshell in the processing method of the eggshell, the present application provides an eggshell fruit and vegetable cleaner preparation method and eggshell drying equipment.

[0006] The present application provides a method for preparing eggshell fruits and vegetables using the following technical solution:

[0007] A method for preparing eggshell fruit and vegetable cleaner comprises the following steps:

[0008] S1, crushing the eggshells and separating them from the eggshell membranes in a shell membrane separation device, then putting the eggshells into a drying device for drying, and then cooling them to room temperature;

[0009] S2, taking part of the eggshells, calcining them at 600-900° C. for 2 h, and grinding the calcined eggshells to obtain calcined eggshell powder;

[0010] S3, taking part of the eggshells, grinding and sterilizing them to obtain non-calcined eggshell powder;

[0011] S4, taking 20-36 parts of non-calcined eggshell powder and 2-6 parts of citric acid, stirring and mixing to obtain a mixed powder A;

[0012] S5, taking 40-53 parts of calcined eggshell powder and 8-10 parts of corn extract, stirring and mixing to obtain a mixed powder B;

[0013] S6. Add 3-5 parts of montmorillonite and 3-6 parts of salt to the mixed powder A and slowly add the mixed powder B to the mixed powder A, continue stirring and then dry.

[0014] Optionally, in step S2, when the eggshell is calcined, the temperature needs to be increased to 850°C within 20 minutes, and after calcination for 75 minutes, the temperature needs to be reduced to 600°C and kept at this temperature for 25 minutes.

[0015] Optionally, in step S6, half of the mixed powder B is directly added, and the remaining mixed powder B is added within 20 minutes.

[0016] The present application also provides an eggshell drying device adopting the following technical solution:

[0017] An eggshell drying device, used in the above step S1, comprising:

[0018] case;

[0019] The conveyor belt is arranged in the housing and is a chain conveyor belt, and an interception net is set between two sets of chains;

[0020] The material discharge box is in the shape of a long strip and is inserted into the shell. The material discharge opening is set at a narrow opening and is located directly above the conveyor belt;

[0021] The unloading roller is rotatably mounted below the unloading port of the unloading box, meshed with the conveyor belt chain through a gear set, and has the same rotation direction as the rotating shaft of the conveyor belt. A plurality of unloading plates are fixed on the surface;

[0022] The baffle plate is installed above the conveyor belt and on the side of the unloading roller close to the moving direction of the conveyor belt;

[0023] The reciprocating screw is rotatably mounted on the conveyor belt, located between the baffle plate and the unloading roller and close to the baffle plate, and is provided with reciprocating threads. The sliding sleeve is provided with a reciprocating block, and the reciprocating block is partially inserted into the reciprocating thread for reciprocating sliding. A material balancing plate is installed at the bottom of the reciprocating block, and the bottom end of the material balancing plate is flush with the bottom end of the baffle plate. The reciprocating screw is meshed with the chain of the conveyor belt through a gear.

[0024] The heating shell is fixedly arranged at the middle part of the inner wall of the shell. The space formed by the heating shell and the shell is a heating chamber. The shell and the heating shell are provided with a plurality of air inlet holes at the position just above the conveyor belt. The air inlet holes are not connected with the heating chamber. The inner wall of the air inlet holes is made of metal material. The bottom of the shell is provided with air outlet holes below the air inlet holes. The air outlet holes are connected with an exhaust fan. The other end of the exhaust fan is connected with the exhaust gas treatment device. The top of the heating chamber is connected with the exhaust pipe of the forging furnace. The bottom of the heating chamber is connected with the exhaust gas treatment device through a negative pressure fan.

[0025] The heating wire is installed between the air inlet and the conveyor belt.

[0026] Optionally, the conveyor belt ends in a heated housing area;

[0027] A plurality of groups of staggered auxiliary belts are rotated under the conveyor belt in the heating shell area. The plurality of auxiliary belts are arranged up and down. The conveyor belt and the auxiliary belt directly below are driven by gear meshing and rotated in opposite directions. Adjacent auxiliary belts are driven by gears and rotated in opposite directions.

[0028] The lower auxiliary belt is used to deliver the eggshells out of the shell.

[0029] Optionally, a ventilation cavity is provided on the rotating shaft of the unloading roller, and a ventilation hole connected to the ventilation cavity is provided on the bottom of the rotating shaft of the unloading roller close to the baffle plate. The ventilation cavity is connected to the air outlet pipe of the fan, and a plurality of blowing holes that can be connected to the ventilation holes are provided on the circumferential outer wall of the unloading roller.

[0030] Optionally, a plurality of avoidance holes are provided at intervals on the material removing plate, and a plurality of material accumulation plates are fixedly provided on a side of the material discharge port of the material discharge box away from the material blocking plate and opposite to the avoidance holes; a rotating plate is rotatably connected to the inner wall of the avoidance hole, and a rotating shaft of the rotating plate is provided with a torsion spring, so that the rotating plate is parallel to the material removing plate.

[0031] Optionally, the material balancing plate is rotatably connected to the reciprocating block, and the rotating shaft is vertically arranged; a guide rod is fixedly provided on the top of the side wall of the material balancing plate, and a guide rail is provided under the frame of the reciprocating screw, and the top end of the guide rod extends into the guide rail and slides against the guide rail; the material balancing plate remains in a state perpendicular to the material baffle plate before sliding to the edge of the conveyor belt, and when the material balancing plate slides to the edge of the conveyor belt, it is pulled by the guide rail and rotated to a state parallel to the material baffle plate.

[0032] Optionally, sliding grooves are provided on both sides of the reciprocating block, a compression spring is fixedly provided at the top of the sliding groove, a clamping plate is vertically slidably provided on the inner wall of the sliding groove, and the other end of the compression spring is fixedly connected to the top of the clamping plate; a trigger plate is fixedly provided on the side wall of the clamping plate, and a clamping groove is provided on the top of the material balancing plate for the clamping plate to extend into when the material balancing plate is in a state perpendicular to the material blocking plate, and the compression spring can push the clamping plate into the clamping groove; abutment plates are arranged on both sides of the reciprocating screw rod from the part where the guide rail starts to bend to the end section of the guide rail, and the abutment plates can abut against the lower surface of the trigger plate and move the clamping plate up.

[0033] Optionally, positioning frames are provided at both ends of the baffle plate, and the positioning frame is horizontally provided with an adjusting groove, and an adjusting spring is fixedly provided on the inner wall of the adjusting groove away from the reciprocating screw, and the other end of the adjusting spring is fixedly connected to the baffle plate, and both ends of the baffle plate slide in the adjusting groove; an adjusting hole is provided at the bottom of the discharge box, and an adjusting plug plate is slidably connected in the adjusting hole, and an extension plate is fixedly provided at the part of the adjusting plug plate outside the adjusting hole, and the extension plate extends to both sides of the discharge box, and tensioning plates are fixedly provided on both sides of the discharge box, and a tensioning spring is fixedly provided on the tensioning plate, and the other end of the tensioning spring is fixedly connected to the extension plate; a plurality of guide wheels are provided above the positioning frame, and a traction rope is tied to the side baffle, and after the traction rope abuts against the guide wheel, it is fastened to the extension plate and is in a stretched state, and the elastic force of the adjusting spring is greater than the elastic force of the tensioning spring.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. Divide the eggshell into two parts, one part is calcined, and the other part is directly added as a raw material. In this way, the utilization effect of the eggshell can be effectively improved, and the substance adsorption activity of the eggshell fruit and vegetable cleaning product produced can be improved by segmented mixing, thereby improving the adsorption and removal effect of the product on pesticides, fruit wax and other substances under the same eggshell addition amount;

[0036] 2. During the eggshell calcination process, the calcium carbonate adsorption activity in the calcined eggshell can be effectively improved by controlling the calcination temperature and duration, controlling the continuous temperature rise, and maintaining the temperature at the end of the calcination, thereby improving the adsorption effect of the eggshell fruit and vegetable cleaner on pesticide residues and fruit wax;

[0037] 3. In the eggshell drying process, the hot air generated during the eggshell calcination process is effectively used to exchange heat with the air entering the shell in the heating chamber, and cooperates with the heating wire to effectively reduce the energy consumption in the drying process;

[0038] 4. The setting of the auxiliary belt can effectively save the floor space of the drying equipment, and at the same time can effectively make full use of the hot air entering the shell to improve the drying efficiency;

[0039] 5. The eggshells that enter the discharge box are piled up downwards, and the eggshells are scraped out by the feeding plate through the rotation of the discharge roller. Since the wet eggshells are sticky, when the discharge roller rotates to the position where the blowing hole is connected to the ventilation hole, the wet eggshells that are sticky in the area are blown off onto the conveyor belt, thereby improving the efficiency of wet eggshell discharge;

[0040] 6. The baffle plate can intercept the eggshells that are piled up high, and spread the intercepted eggshells through the reciprocating material distribution plate to improve the uniformity of the eggshells on the conveyor belt, thereby improving the eggshell drying efficiency. The material distribution plate can also flip when it moves to the end of the conveyor belt to reduce the probability of eggshells piling up on both sides of the conveyor belt;

[0041] 7. When the amount of egg shells intercepted by the baffle plate accumulates too much, the moving pressure of the egg shells drives the baffle plate to slide, and then the baffle plate is moved into the adjustment hole through the traction rope, reducing the amount of egg shells discharged, thereby realizing automatic adjustment of the amount of egg shells discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic diagram of the structure of Example 4 of the present application;

[0043] Figure 2 is a cross-sectional view of Example 4 of the present application;

[0044] Figure 3 is a partial cross-sectional view showing a blanking assembly according to Example 4 of the present application;

[0045] Figure 4 is a partial schematic diagram showing a material distribution component in Example 4 of the present application;

[0046] Figure 5 It is a partial cross-sectional view of Example 4 of the present application showing the state of the material equalizing plate after rotation.

[0047] In the figure, 1, shell; 11, conveyor belt; 12, heating shell; 121, air inlet hole; 122, air outlet hole; 123, heating chamber; 2, unloading box; 21, material accumulation plate; 22, adjustment hole; 3, unloading assembly; 31, unloading roller; 311, blowing hole; 32, ventilation chamber; 321, ventilation hole; 33, material shifting plate; 331, avoidance hole; 3311, rotating plate; 4, positioning frame; 41, adjustment slot; 42, material blocking plate; 421, adjustment spring; 43 , guide wheel; 5. adjustment component; 51. traction rope; 52. adjustment plug plate; 521. extension plate; 522. tension spring; 523. tension plate; 6. material balancing component; 61. reciprocating screw; 611. guide rail; 612. abutment plate; 62. reciprocating block; 621. sliding groove; 6211. compression spring; 6212. clamping plate; 6213. trigger plate; 63. material balancing plate; 631. guide rod; 632. clamping slot; 7. auxiliary belt; 8. heating wire;. DETAILED DESCRIPTION

[0048] The embodiment of the present application discloses a method for preparing eggshell fruit and vegetable cleaner.

[0049] Example 1

[0050] The eggshell fruit and vegetable cleaning method comprises the following steps:

[0051] S1, crushing the eggshells and separating them from the eggshell membranes in a shell membrane separation device, then putting the eggshells into a drying device for drying, and then cooling them to room temperature;

[0052] S2, taking part of the eggshells, calcining them at 600-900°C for 2h: raising the temperature to 850°C within 20min, lowering the temperature to 600°C after calcining for 75min and keeping it at that temperature for 25min, grinding the calcined eggshells to obtain calcined eggshell powder;

[0053] S3, taking part of the eggshells, grinding and sterilizing them to obtain non-calcined eggshell powder;

[0054] S4, taking 20 parts of non-calcined eggshell powder and 2 parts of citric acid, stirring and mixing to obtain a mixed powder A;

[0055] S5, taking 40 parts of calcined eggshell powder and 8 parts of corn extract, stirring and mixing them to obtain a mixed powder B;

[0056] S6. Add 3 parts of montmorillonite and 3 parts of salt to the mixed powder A and add half of the mixed powder B directly. Add the remaining mixed powder B within 20 minutes, continue stirring and dry.

[0057] Comparative Example 1

[0058] The difference compared with Example 1 is that in step S2, the temperature is raised to 850°C for calcination within 20 minutes.

[0059] Comparative Example 2

[0060] The difference compared with Example 1 is that in step S2, the temperature is directly adjusted to 850°C for calcination.

[0061] Comparative Example 3

[0062] The difference compared with Example 1 is that in step S6, the mixed powder B is directly added.

[0063] 1 g of the eggshell fruit and vegetable cleansing product obtained by the methods of Example 1, Comparative Example 1, Comparative Example 2 and Comparative Example 3 was dissolved in 500 ml of water, and spheres of the same size soaked in water containing arsenic chloride for 1 hour were put into each beaker. After waiting for 10 minutes, the spheres were taken out and the surface pesticide residues were tested to obtain the data in Table 1:

[0064] Table 1 Pesticide adsorption test of Example 1, Comparative Example 1, Comparative Example 2 and Comparative Example 3

[0065] serial number Arsenic acid residue mg / g Example 1 136.5 Comparative Example 1 161.3 Comparative Example 2 166.7 Comparative Example 3 144.2

[0066] By comparison in Table 1, it can be seen that in the calcination step, the segmented heating method is adopted, the temperature is first slowly raised to 850°C for calcination and then the temperature is lowered to 600°C for constant temperature maintenance, which can better stimulate the adsorption activity of the substances in the calcined eggshells and improve the adsorption effect. At the same time, the batch addition of mixed powder B can also improve the adsorption effect of the produced eggshell fruit and vegetable cleaner on pesticide residues.

[0067] Example 2

[0068] S1, crushing the eggshells and separating them from the eggshell membranes in a shell membrane separation device, then putting the eggshells into a drying device for drying, and then cooling them to room temperature;

[0069] S2, taking part of the eggshells, calcining them at 600-900°C for 2h: raising the temperature to 850°C within 20min, lowering the temperature to 600°C after calcining for 75min and keeping it at that temperature for 25min, grinding the calcined eggshells to obtain calcined eggshell powder;

[0070] S3, taking part of the eggshells and grinding them to obtain non-calcined eggshell powder;

[0071] S4, taking 36 parts of non-calcined eggshell powder and 6 parts of citric acid, stirring and mixing to obtain a mixed powder A;

[0072] S5, taking 53 parts of calcined eggshell powder and 10 parts of corn extract, stirring and mixing them to obtain a mixed powder B;

[0073] S6. Add 5 parts of montmorillonite and 6 parts of salt to the mixed powder A and add half of the mixed powder B directly. Add the remaining mixed powder B within 20 minutes, continue stirring and dry.

[0074] Example 3

[0075] S1, crushing the eggshells and separating them from the eggshell membranes in a shell membrane separation device, then putting the eggshells into a drying device for drying, and then cooling them to room temperature;

[0076] S2, taking part of the eggshells, calcining them at 600-900°C for 2h: raising the temperature to 850°C within 20min, lowering the temperature to 600°C after calcining for 75min and keeping it at that temperature for 25min, grinding the calcined eggshells to obtain calcined eggshell powder;

[0077] S3, taking part of the eggshells and grinding them to obtain non-calcined eggshell powder;

[0078] S4, taking 26 parts of non-calcined eggshell powder and 4 parts of citric acid, stirring and mixing to obtain a mixed powder A;

[0079] S5, taking 44 parts of calcined eggshell powder and 8 parts of corn extract, stirring and mixing them to obtain a mixed powder B;

[0080] S6. Add 3 parts of montmorillonite and 5 parts of salt to the mixed powder A and add half of the mixed powder B directly. Add the remaining mixed powder B within 20 minutes, continue stirring and dry.

[0081] 1 g of the eggshell fruit and vegetable cleansing product prepared by the methods of Example 1, Example 2 and Example 3 was dissolved in 500 ml of water, and spheres of the same size soaked in water containing arsenic thiocarb for 1 hour were put into each beaker. After waiting for 10 minutes, the spheres were taken out and tested for surface pesticide residues, and the data in Table 2 were obtained:

[0082] Table 2 Pesticide adsorption test of Example 1, Example 2, and Example 3

[0083] serial number Arsenic acid residue mg / g Example 1 136.5 Example 2 138.4 Example 3 136.1

[0084] It can be seen from Table 2 that within the range given in the present application, the eggshell fruit and vegetable cleaning products prepared have ideal adsorption effects on pesticides, among which the eggshell fruit and vegetable cleaning products prepared by the data of Example 3 have the best adsorption effect on pesticide residues.

[0085] Example 4

[0086] The present application also discloses an eggshell drying device, which is used for drying eggshells and is used in conjunction with an eggshell calcining furnace.

[0087] refer to Figure 1 and Figure 2 The eggshell drying equipment comprises a shell 1, a conveyor belt 11, a feed box 2 and a heating shell 12. The conveyor belt 11 is set in the shell 1 and driven to rotate by a motor. The feed box 2 is in the shape of a long strip and inserted into the shell 1. The feed opening is set at a narrowed opening and is located directly above the conveyor belt 11. The feed box 2 is provided with a plurality of drainage holes, and the feed opening of the feed box 2 is provided with a feed assembly 3 for conveying eggshells to the conveyor belt 11.

[0088] refer to Figure 2 and Figure 3Two positioning frames 4 are set up on both sides of the conveyor belt 11 on the side of the material box 2 facing the moving direction of the conveyor belt 11, and the opposite side walls of the positioning frames 4 are horizontally provided with adjustment grooves 41. The same vertically arranged baffle plate 42 is slidably connected in the adjustment grooves 41 of the two positioning frames 4, and the bottom end of the baffle plate 42 is located above the conveyor belt 11. An adjustment spring 421 is fixedly arranged at one end of the adjustment groove 41 away from the material box 2, and the other end of the adjustment spring 421 is fixedly connected to the baffle plate 42. The baffle plate 42 is provided with a material leveling component 6 on the side close to the material box 2 for evenly spreading the material intercepted by the baffle plate 42 on the conveyor belt 11. An adjustment component 5 is arranged between the material box 2 and the baffle plate 42 to slow down the material discharge speed of the material box 2 when there are many egg shells intercepted.

[0089] The heating shell 12 is fixedly arranged in the middle part of the inner wall of the shell 1. The space formed by the heating shell 12 and the shell 1 is a heating chamber 123. The shell 1 and the heating shell 12 are provided with a plurality of air inlet holes 121 at the position directly above the conveyor belt 11. The air inlet holes 121 are not connected to the heating chamber 123. The inner wall of the air inlet hole 121 is made of metal material. A metal plate with a honeycomb cross section is welded and fixed in the air inlet hole 121 to increase the contact area with the air. An air outlet hole 122 is provided at the bottom of the shell 1 below the air inlet hole 121. The air outlet hole 122 is connected to an exhaust fan, and the other end of the exhaust fan is connected to the exhaust gas treatment device. The top of the heating chamber 123 is connected to the exhaust pipe of the forging furnace, and the bottom of the heating chamber 123 is connected to the exhaust gas treatment device through a negative pressure fan. A heating wire 8 is arranged above the conveyor belt 11 in the heating shell 12 area, and the end of the conveyor belt 11 is in the heating shell 12 area. A plurality of groups of staggered auxiliary belts 7 are rotatably mounted below the conveyor belt 11 in the heating shell 12 area. The plurality of auxiliary belts 7 are arranged up and down. The conveyor belt 11 and the auxiliary belt 7 directly below are driven by gear meshing and rotate in opposite directions. Adjacent auxiliary belts 7 are driven by gears and rotate in opposite directions. The lowest auxiliary belt 7 is used to send the eggshells out of the shell 1. The conveyor belt 11 and the auxiliary belt 7 are both chain-type, and a filter is fixedly arranged between the two groups of chains.

[0090] The eggshells are put into the feeding box 2. During the feeding process, part of the water in the eggshells is infiltrated downward and discharged through the drain hole. The eggshells in the feeding box 2 are transported to the conveyor belt 11 through the feeding assembly 3, and part of the water is drained on the conveyor belt 11. In the process of the conveyor belt 11 driving the eggshells through the baffle plate 42, the baffle plate 42 intercepts the eggshells that exceed the height, and the intercepted eggshells are evenly spread on the conveyor belt 11 through the material leveling assembly 6, so as to improve the uniformity of the eggshell laying on the conveyor belt 11, thereby improving the drying effect. When there are many intercepted eggshells, the feeding speed of the feeding box 2 is slowed down by the regulating assembly 5, so as to reduce the situation where the eggshells intercepted by the baffle plate 42 accumulate more. The eggshells move into the heating shell 12 area along with the conveyor belt 11, and the hot air generated by the eggshell calcining equipment is drawn into the heating chamber 123 to heat the heating chamber 123, thereby heating the inner wall of the air inlet. When the air enters the shell 1 through the heating hole, the air exchanges heat with the air inlet hole, and the heating wire 8 is heated at the same time, thereby drying the eggshells below, thereby making full use of the heat in the hot exhaust gas produced by the eggshell calcining furnace and reducing the energy consumption of the heating wire 8 during drying. In the heating shell 12 area, multiple auxiliary belts 7 are staggered up and down to achieve full utilization of the hot air introduced into the shell 1, increase the time the eggshells stay in the area, and reduce the space area occupied by the eggshell drying equipment.

[0091] refer to Figure 3 The unloading assembly 3 includes an unloading roller 31, a ventilation chamber 32 and a material-diverting plate 33. The unloading roller 31 is rotatably mounted below the unloading port of the unloading box 2, and is meshed with the chain of the conveyor belt 11 through two gears in the gear set, and the rotation direction is the same as the rotation direction of the rotating shaft of the conveyor belt 11. There are multiple material-diverting plates 33, which are fixed on the circumferential outer wall of the unloading roller 31 at equal intervals around the rotating shaft of the unloading roller 31. Multiple avoidance holes 331 are spaced apart on the material-diverting plate 33, and multiple material-accumulating plates 21 are fixed at the position of the avoidance holes 331 on the side of the unloading port of the unloading box 2 away from the material-blocking plate 42, and the material-accumulating plates 21 can pass through the avoidance holes 331. The inner wall of the avoidance hole 331 is rotatably connected with a rotating plate 3311, and the rotating shaft of the rotating plate 3311 is provided with a torsion spring, so that the rotating plate 3311 is parallel to the material-diverting plate 33. The rotating shaft of the unloading roller 31 is provided with a ventilation cavity 32, and a ventilation hole 321 communicating with the ventilation cavity 32 is provided at the bottom of the rotating shaft of the unloading roller 31 near the baffle plate 42. The ventilation cavity 32 is communicated with the air outlet pipe of the fan, and a plurality of blowing holes 311 communicating with the ventilation hole 321 are provided on the circumferential outer wall of the unloading roller 31.

[0092] Through the meshing of gears, the unloading roller 31 rotates with the rotation of the conveyor belt 11, and the material-discharging plate 33 passes between the material-accumulating plates 21 and causes the rotating plate 3311 to rotate, thereby discharging the eggshells accumulated at the bottom of the unloading box 2 and sending them to the conveyor belt 11. When the unloading roller 31 rotates downward, the corresponding blowing holes 311 are connected with the ventilation holes 321, and then the eggshells stuck on the unloading roller 31 are blown off to the conveyor belt 11, thereby improving the efficiency of eggshell unloading.

[0093] refer to Figure 4 and Figure 5 The material equalizing assembly 6 includes a reciprocating screw 61, a reciprocating block 62 and a material equalizing plate 63. The reciprocating screw 61 is rotatably mounted above the conveyor belt 11, and is located between the material baffle plate 42 and the unloading roller 31, and is close to the material baffle plate 42. The rotating shaft of the reciprocating screw 61 is provided with a gear that is connected and meshed with the conveyor belt 11. Reciprocating threads are distributed on the reciprocating screw 61, and the reciprocating block 62 is slidably sleeved on the reciprocating screw 61. Part of the reciprocating block 62 is inserted into the reciprocating thread for reciprocating sliding, and the top of the reciprocating block 62 abuts against the top of the frame of the reciprocating screw 61. The material equalizing plate 63 is rotatably connected to the bottom end of the reciprocating block 62, and the rotating shaft is vertically arranged. A guide rod 631 is fixedly provided at the top of the side wall of the material equalizing plate 63, and a guide rail 611 is mounted below the frame of the reciprocating screw 61. The top of the guide rod 631 extends into the guide rail 611 and abuts against the guide rail 611 for sliding. The material balancing plate 63 is kept perpendicular to the material blocking plate 42 before sliding to the edge of the conveyor belt 11; when sliding to the edge of the conveyor belt 11, the material balancing plate 63 is pulled by the guide rail 611 to rotate to a state parallel to the material blocking plate 42. Sliding grooves 621 are provided on both sides of the reciprocating block 62, and a compression spring 6211 is fixed at the top of the sliding groove 621. A clamping plate 6212 is vertically slid on the inner wall of the sliding groove 621, and the other end of the compression spring 6211 is fixedly connected to the top of the clamping plate 6212. A trigger plate 6213 is fixed on the side wall of the clamping plate 6212. A clamping groove 632 is provided on the top of the material balancing plate 63 for the clamping plate 6212 to extend into when the material balancing plate 63 is perpendicular to the material blocking plate 42, and the compression spring 6211 can push the clamping plate 6212 into the clamping groove 632. Abutment plates 612 are provided on both sides of the reciprocating screw 61 from the bending portion of the guide rail 611 to the end portion of the guide rail 611 . The abutment plates 612 can abut against the lower surface of the trigger plate 6213 and move the clamping plate 6212 upward.

[0094] The conveyor belt 11 drives the reciprocating screw 61 to rotate continuously through the gear, thereby driving the reciprocating block 62 to slide back and forth, and the reciprocating block 62 drives the material balancing plate 63 to move, pushes and flattens the eggshells intercepted by the baffle plate 42, thereby improving the effect of spreading the eggshells on the conveyor belt 11. When the material balancing plate 63 moves to the edge of the conveyor belt 11, the abutment plate 612 abuts against the trigger plate 6213 and drives the trigger plate 6213 to move upward, and the card plate 6212 separates from the card slot 632, releasing the rotation restriction on the material balancing plate 63. Then the guide rail 611 drives the guide rod 631 to rotate the material balancing plate 63 90°, thereby reducing the probability of pushing the eggshells from the conveyor belt 11, and also reducing the probability of a large number of eggshells accumulating on both sides of the conveyor belt 11. During the resetting process of the reciprocating block 62, the guide rod 631 drives the equalizing plate 63 to rotate and reset under the contact of the guide rail 611. After the contact plate 612 is separated from the trigger plate 6213, the clamping plate 6212 is re-entered into the clamping groove 632 to limit the rotation of the equalizing plate 63, thereby improving the stability of the equalizing plate 63 driving the eggshell to move.

[0095] refer to Figure 3 , the adjustment component 5 includes a traction rope 51 and an adjustment plug plate 52. An adjustment hole 22 is provided on the side of the bottom of the material box 2 facing the material baffle plate 42. The adjustment hole 22 is a bar hole. The adjustment plug plate 52 is slidably connected in the adjustment hole 22. The adjustment plug plate 52 is a thin plate. An extension plate 521 is fixedly provided on the part of the adjustment plug plate 52 outside the adjustment hole 22. The extension plate 521 extends to both sides of the material box 2. A tensioning plate 523 is fixedly provided on both sides of the material box 2. The tensioning plate 523 is fixedly provided with a tensioning spring 522. The other end of the tensioning spring 522 is fixedly connected to the extension plate 521. The tensioning spring 522 pulls the adjustment plug plate 52 into the lower material box 2. A plurality of guide wheels 43 are arranged above the positioning frame 4. One end of the traction rope 51 is tied to the side of the material baffle plate 42 away from the material box 2. The traction rope 51 is placed on the guide wheel 43 and is fastened to the extension plate 521. The traction rope 51 is in a tensioned state, and the elastic force of the adjustment spring 421 is greater than the elastic force of the tension spring 522 .

[0096] When the amount of egg shells intercepted by the baffle plate 42 is large, the accumulated egg shells will drive the baffle plate 42 to compress the adjusting spring 421 under the thrust of the conveyor belt 11, thereby releasing the surplus of the traction rope 51, so that the adjusting plug plate 52 increases the length of the adjusting plug plate 52 inserted into the adjusting hole 22 under the action of the tensioning spring 522, thereby reducing the amount of egg shells discharged from the discharge box 2, thereby realizing dynamic adjustment of the amount of egg shells intercepted by the baffle plate 42 and the amount of egg shells discharged from the discharge box 2, so as to improve the drying efficiency of the egg shells on the conveyor belt 11.

[0097] The eggshell drying equipment is connected to the eggshell calcining furnace, and uses the hot air generated by the eggshell calcining furnace to heat the heating chamber 123, and performs heat exchange on the air entering the shell 1, thereby reducing the power consumed by the heating wire 8, and improving the uniformity of the eggshells laid on the conveyor belt 11 by the automatic unloading of the unloading component 3, the automatic flattening of the excess eggshells on the conveyor belt 11 by the evenly-distributed component 6, and the dynamic adjustment of the amount of eggshells intercepted by the baffle plate 42 and the unloading amount, thereby improving the eggshell drying efficiency and reducing the energy consumption required for eggshell drying. After the eggshells are dried, they are directly unloaded into the unloading device of the eggshell calcining equipment for calcination.

[0098] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for preparing eggshell fruit and vegetable cleaner, characterized in that: The steps include: S1, crushing the eggshells and separating them from the eggshell membranes in a shell membrane separation device, then putting the eggshells into a drying device for drying, and then cooling them to room temperature; S2, taking part of the eggshells, calcining them at 600-900° C. for 2 h, and grinding the calcined eggshells to obtain calcined eggshell powder; S3, taking part of the eggshells, grinding and sterilizing them to obtain non-calcined eggshell powder; S4, taking 20-36 parts of non-calcined eggshell powder and 2-6 parts of citric acid, stirring and mixing to obtain a mixed powder A; S5, taking 40-53 parts of calcined eggshell powder and 8-10 parts of corn extract, stirring and mixing to obtain a mixed powder B; S6. Add 3-5 parts of montmorillonite and 3-6 parts of salt to the mixed powder A and slowly add the mixed powder B to the mixed powder A, continue stirring and then dry.

2. The method for preparing eggshell fruit and vegetable cleaner according to claim 1, characterized in that: In step S2, when the eggshell is calcined, the temperature needs to be raised to 850°C within 20 minutes, and after calcination for 75 minutes, the temperature needs to be lowered to 600°C and kept at this temperature for 25 minutes.

3. The method for preparing eggshell fruit and vegetable cleaner according to claim 1, characterized in that: In step S6, half of the mixed powder B is directly added, and the remaining mixed powder B is added within 20 minutes.

4. An eggshell drying device, used in step S1 of claim 1, characterized in that: include Housing (1); The conveyor belt (11) is arranged in the housing (1) and is a chain conveyor belt (11), and an interception net is set between two groups of chains; The material discharge box (2) is in the shape of a long strip and is inserted into the housing (1). The material discharge opening is configured with a constricted opening and is located directly above the conveyor belt (11); A material discharge roller (31) is rotatably mounted below the material discharge port of the material discharge box (2), meshed with the conveyor belt (11) chain through a gear set, and has a rotation direction that is the same as the rotation direction of the rotating shaft of the conveyor belt (11), and has a plurality of material discharge plates (33) fixedly arranged on its surface; A material blocking plate (42) is mounted above the conveyor belt (11) and on a side of the unloading roller (31) close to the moving direction of the conveyor belt (11); A reciprocating screw (61) is rotatably mounted on the conveyor belt (11), located between the material baffle plate (42) and the unloading roller (31) and close to the material baffle plate (42), and is provided with a reciprocating thread. The sliding sleeve is provided with a reciprocating block (62), and the reciprocating block (62) is partially inserted into the reciprocating thread for reciprocating sliding. A material balancing plate (63) is installed at the bottom of the reciprocating block (62), and the bottom end of the material balancing plate (63) is flush with the bottom end of the material baffle plate (42). The reciprocating screw (61) is meshed with the chain of the conveyor belt (11) through a gear. The heating shell (12) is fixedly mounted on the middle section of the inner wall of the shell (1); the space formed by the heating shell (12) and the shell (1) is a heating chamber (123); the shell (1) and the heating shell (12) are provided with a plurality of air inlet holes (121) at a position directly above the conveyor belt (11); the air inlet holes (121) are not connected to the heating chamber (123); the inner wall of the air inlet holes (121) is made of metal material; the bottom of the shell (1) is provided with air outlet holes (122) below the air inlet holes (121); the air outlet holes (122) are connected to an exhaust fan; the other end of the exhaust fan is connected to an exhaust gas treatment device; the top of the heating chamber (123) is connected to an exhaust pipe of a forging furnace; and the bottom of the heating chamber (123) is connected to the exhaust gas treatment device via a negative pressure fan; The heating wire (8) is installed between the air inlet hole (121) and the conveyor belt (11).

5. The eggshell drying device according to claim 4, characterized in that: The end of the conveyor belt (11) is located in the area of ​​the heating shell (12); A plurality of groups of staggered auxiliary belts (7) are rotatably mounted below the conveyor belt (11) in the heating shell (12) area. The plurality of auxiliary belts (7) are arranged vertically. The conveyor belt (11) and the auxiliary belt (7) directly below are meshed and driven by gears, and the rotation directions are opposite. Adjacent auxiliary belts (7) are driven by gears, and the rotation directions are opposite. The lowermost auxiliary belt (7) is used to convey the egg shells out of the housing (1).

6. The eggshell drying device according to claim 4, characterized in that: A ventilation cavity (32) is provided on the rotating shaft of the unloading roller (31); a ventilation hole (321) communicating with the ventilation cavity (32) is provided at the bottom of one side of the rotating shaft of the unloading roller (31) close to the material blocking plate (42); the ventilation cavity (32) is communicated with an air outlet pipe of a fan; and a plurality of blowing holes (311) capable of communicating with the ventilation hole (321) are provided on the circumferential outer wall of the unloading roller (31).

7. The eggshell drying device according to claim 6, characterized in that: A plurality of avoidance holes (331) are arranged at intervals on the material shifting plate (33); a plurality of material accumulating plates (21) are fixedly arranged at positions opposite to the avoidance holes (331) on a side of the material discharge opening of the material discharge box (2) away from the material blocking plate (42); a rotating plate (3311) is rotatably connected to the inner wall of the avoidance hole (331); a rotating shaft of the rotating plate (3311) is provided with a torsion spring, so that the rotating plate (3311) is parallel to the material shifting plate (33).

8. The eggshell drying device according to claim 4, characterized in that: The material balancing plate (63) is rotatably connected to the reciprocating block (62), and the rotating shaft is vertically arranged; a guide rod (631) is fixedly provided at the top of the side wall of the material balancing plate (63), and a guide rail (611) is provided below the frame of the reciprocating screw rod (61); the top end of the guide rod (631) extends into the guide rail (611) and abuts against and slides with the guide rail (611); the material balancing plate (63) is kept in a state perpendicular to the material baffle plate (42) before sliding to the edge of the conveyor belt (11), and when the material balancing plate (63) slides to the edge of the conveyor belt (11), it is pulled by the guide rail (611) and rotated to a state parallel to the material baffle plate (42).

9. The eggshell drying device according to claim 8, characterized in that: Sliding grooves (621) are provided on both sides of the reciprocating block (62), a compression spring (6211) is fixedly provided at the top of the sliding groove (621), a clamping plate (6212) is vertically slidably provided on the inner wall of the sliding groove (621), and the other end of the compression spring (6211) is fixedly connected to the top of the clamping plate (6212); a trigger plate (6213) is fixedly provided on the side wall of the clamping plate (6212), and a trigger plate (6213) is provided on the top of the material balancing plate (63) in a position perpendicular to the material blocking plate ( 42), a card slot (632) is provided for the card plate (6212) to extend into, and the compression spring (6211) can push the card plate (6212) into the card slot (632); abutment plates (612) are arranged on both sides of the reciprocating screw rod (61) from the bending portion of the guide rail (611) to the end portion of the guide rail (611), and the abutment plates (612) can abut against the lower surface of the trigger plate (6213) and move the card plate (6212) upward.

10. The eggshell drying device according to claim 4, characterized in that: Positioning frames (4) are arranged at both ends of the baffle plate (42), and the positioning frames (4) are horizontally provided with adjustment grooves (41). An adjustment spring (421) is fixedly arranged on the inner wall of the adjustment groove (41) away from the reciprocating screw rod (61), and the other end of the adjustment spring (421) is fixedly connected to the baffle plate (42), and both ends of the baffle plate (42) slide in the adjustment grooves (41); an adjustment hole (22) is arranged at the bottom of the unloading box (2), and an adjustment plug plate (52) is slidably connected in the adjustment hole (22), and an extension plate (52) is fixedly arranged on the part of the adjustment plug plate (52) outside the adjustment hole (22). 1), an extension plate (521) extends to both sides of the material discharge box (2), tension plates (523) are fixedly provided on both sides of the material discharge box (2), a tension spring (522) is fixedly provided on the tension plate (523), and the other end of the tension spring (522) is fixedly connected to the extension plate (521); a plurality of guide wheels (43) are arranged above the positioning frame (4), a traction rope (51) is fastened to the side baffle plate, and the traction rope (51) is fastened to the extension plate (521) after contacting the guide wheel (43) and is in a stretched state, and the elastic force of the adjustment spring (421) is greater than the elastic force of the tension spring (522).

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