Vacuum dehydration device for salt manufacturing system

Abstract

The invention discloses a vacuum dehydration device for a salt manufacturing system, which relates to the technical field of salt manufacturing devices, and comprises a base frame, a nitrogen supply device and an exhaust pump, a nitrogen discharging mechanism for quantitatively conveying salt particles to the packaging area and preventing the salt particles from being attached to water is arranged on the base frame and comprises a vertical shaft which rotates on the base frame in a fixed shaft mode, an upper base plate is coaxially fixed to the top of the vertical shaft, multiple sets of material guiding holes are formed in the positions, corresponding to the discharging pipes, of the upper base plate, and a lower base plate synchronously rotating with the upper base plate is arranged below the upper base plate; according to the salt particle packaging device, the nitrogen discharge mechanism is arranged, so that salt particles temporarily stored in the branch pipe part can be subjected to air replacement and dehydration treatment, the contact time of humid air and the salt particles can be effectively shortened, and the salt particle packaging quality is improved. And the moisture absorption problem caused by temperature change in the supply and conveying process of the salt particles is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of salt making devices, in particular to a vacuum dehydration device for a salt making system. Background Art

[0002] In the salt production process, the salt production system usually includes multiple links such as brine collection, evaporation and crystallization, drying and packaging. Among them, the drying and packaging links are crucial to ensuring the quality and stability of salt products. In the production process of the salt production system, the dried salt particles are accurately transferred to the packaging line through an efficient conveying device, thereby completing the subsequent quantitative packaging process.

[0003] The Chinese patent (publication number: CN118831345A) specifically includes an evaporation crystallizer equipped with a concentration monitor, a material transfer pump connected to the evaporation crystallizer through a first pipe, a thickener connected to the material transfer pump through a second pipe, a centrifugal drying unit connected to the thickener through a third pipe, and a packaging unit for packaging the dried material. A first reflux valve is provided on the first reflux pipe between the second pipe and the evaporation crystallizer; the first discharge valve and the material transfer pump on the first pipe are opened, and when the material in the evaporation crystallizer reaches a preset concentration, the first regulating valve on the second pipe is triggered to open to a first preset opening; when the target parameter detected by the detection and stirring execution unit on the thickener meets the first preset condition, the first regulating valve is triggered to adjust the opening and the first reflux valve is opened; the provided automatic salt discharge device and method can automatically control the dehydration, drying and packaging of industrial salt, thereby reducing the frequent operations of on-site personnel and improving work efficiency.

[0004] During the salt production process, salt granules typically reach a higher temperature than ambient temperature after initial drying. As the salt granules are fed and conveyed, their temperature gradually decreases, and so does the temperature of the air in contact with them. When the air temperature drops below the dew point, moisture in the air condenses into liquid water, which then comes into contact with the salt granules, causing them to absorb moisture. This phenomenon is particularly pronounced during the salt packaging process, as the air inside the bag further increases in humidity as the salt granules cool, trapping moisture in the bag and affecting the salt's quality.

[0005] In addition, the existing salt particle supply and transportation process makes it difficult to effectively separate the salt particles from the external natural air before packaging. The lack of separation causes the salt particles to be continuously exposed to the external air during transportation, further aggravating the moisture absorption problem caused by temperature changes. Therefore, a vacuum dehydration device for a salt production system is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a vacuum dehydration device for a salt production system, which has the advantages of effectively reducing the contact time between humid air and salt particles, avoiding the problem of moisture absorption of salt particles due to temperature changes during the supply and transportation process, and solving the problem of moisture absorption that may occur during the supply or delivery of salt particles.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a vacuum dehydration device for a salt production system, comprising a base frame, a storage frame for receiving salt particles and a discharge pipe for transporting the salt particles to a packaging area, a nitrogen supply device and an exhaust pump arranged on the base frame, the discharge pipe being composed of multiple components of pipe parts, the storage frame including an integrally formed discharge pipe, and a nitrogen discharge mechanism being provided on the base frame for quantitatively transporting salt particles to the packaging area and preventing the salt particles from adhering to water; The nitrogen discharge mechanism includes a vertical shaft that rotates on a fixed axis on a base frame, an upper base plate is coaxially fixed to the top of the vertical shaft, and a plurality of groups of guide holes are provided on the upper base plate corresponding to the position of the discharge pipe. The upper surface of the upper base plate is in sliding contact with the bottom of the discharge pipe. A lower base plate is provided below the upper base plate and rotates synchronously with the upper base plate, and a volume component for measuring the amount of salt grains packaged in a single time is provided on the lower base plate. The base frame is also provided with a distribution component that drives the quantitative salt particles set by the volume component into the discharge pipe; A comb-shaped bracket is fixedly connected to the bottom of the base frame, and two sets of mounting rings are fixedly connected to the interfaces of the comb-shaped bracket corresponding to adjacent branch pipes. The two sets of mounting rings are provided with inner sealing components for sealing the cross section of the discharge pipe to limit the flow of salt particles.

[0008] Preferably, the volume assembly includes a positioning cylinder fixedly connected to the lower surface of the upper base plate and communicating with the material guide hole, and a positioning cylinder is fixedly passed through the lower base plate, and the positioning cylinder is slidably sleeved on the positioning cylinder; The vertical shaft sliding sleeve is provided with a hollow guide column, which is fixedly connected to the lower base plate. The base frame is provided with a variable component for adjusting the relative positions of the movable cylinder and the positioning cylinder to change the single salt grain packaging amount.

[0009] Preferably, the variable assembly includes two sets of limit rings fixedly sleeved on the hollow guide column, a gap ring is provided between the two sets of limit rings, the gap ring is slidably sleeved on the hollow guide column and is in sliding contact with the opposite surfaces of the two sets of limit rings; The notch ring is fixedly connected with a vertical connecting seat, the base frame is fixedly connected with an electric push rod that drives the vertical connecting seat to move freely in the vertical direction, the top of the vertical connecting seat is fixedly connected with a center ring seat, and the center ring seat rotates on a fixed axis on the lower base plate.

[0010] Preferably, the row assembly includes a bottom sealing plate that rotates on a fixed axis on the movable cylinder. The bottom sealing plate does not block the bottom opening of the movable cylinder in an initial state, and a guide pin is fixedly connected to one end of the bottom sealing plate away from the movable cylinder. The end of the center ring seat facing the discharge pipe includes an integrally formed groove portion, and the guide pin is in sliding contact with the lower circumference of the center ring seat.

[0011] Preferably, the base frame is provided with a side gear driven by a motor and freely rotating in the horizontal direction, the side gear rotates on a fixed axis on the base frame, the side gear is meshed and connected with a center gear, and the center gear is coaxially fixed on the vertical shaft.

[0012] Preferably, the inner sealing assembly includes a positioning ring fixedly connected to the inner circumference of the mounting ring, a positioning ring is provided above the positioning ring, and the positioning ring is rotated on the mounting ring with a fixed axis, and a plurality of sets of synchronously deflected triangular clamp seats are provided on one side of the positioning ring facing the positioning ring, and the spaces between the plurality of sets of triangular clamp seats form a lower cavity for the flow of salt particles; The positioning ring is provided with equilateral grooves for sliding connection of multiple sets of triangular clamp seats, and the triangular clamp seats are in sliding contact with the opposing surfaces of the positioning ring and the positioning ring; A positioning pin is fixedly connected to a side of the triangular clamp seat facing the positioning ring, and a positioning groove for the positioning pin to be slidably connected is provided on the positioning ring.

[0013] Preferably, a supporting frame for receiving salt particles is fixedly passed through the top of the discharge pipe, a positioning ring is in sliding contact with the branch pipe portion above it, and a positioning ring is fixedly passed through the branch pipe portion below it; A forked branch pipe is fixedly passed through the branch pipe part in the two groups of inner sealing components. The forked branch pipe includes two groups of port parts formed in one piece. The two groups of port parts are respectively in gas communication with the exhaust pump and the nitrogen supply equipment.

[0014] Preferably, the inner seal assembly further comprises a lower shaft which is in transmission connection with the side gear and rotates synchronously, the lower shaft is fixedly rotated on the comb-shaped bracket, a shaft flange is coaxially fixed on the lower shaft, a blocking rod which reciprocates in the horizontal direction is provided on one side of the shaft flange, and a rectangular groove for the blocking rod to slide through is provided on the comb-shaped bracket; The outer circumference of the adjustment ring is fixedly connected with a notch gear, the notch gear is meshedly connected with a rack, and the rack and the blocking rod are fixedly connected.

[0015] Preferably, a pressure column is fixedly connected to the shaft flange, and a side extension rod is fixedly connected to the side of the blocking rod facing the shaft flange, and the side extension rod is in sliding contact with the pressure column; A swing rod is provided on one side of the shaft flange, which is free to deflect in the horizontal direction. The swing rod rotates on the comb-shaped bracket with a fixed axis, and the swing rod includes an integrally formed sharp corner portion, and the pressure column is in sliding contact with the sharp corner portion. One end of the blocking rod facing the swing rod is fixedly connected with a positioning pin, and the swing rod is provided with a positioning groove for the positioning pin to be slidably connected.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is equipped with a nitrogen exhaust mechanism to replace air and dehydrate the salt particles temporarily stored in the branch pipe, thereby effectively reducing the contact time between humid air and salt particles, avoiding the problem of moisture absorption of salt particles due to temperature changes during supply and transportation. In addition, when the salt particles slide into the packaging bag, the nitrogen supply equipment continuously provides high-temperature dry nitrogen, which not only replaces the air in the packaging bag, but also increases the temperature of the salt particles, avoiding moisture absorption due to excessively rapid temperature drop.

[0017] 2. The present invention can accurately control the packaging quantity of a single salt grain by setting a volume component, through the combination of a positioning cylinder and an active cylinder, and the adjustment function of a variable component, and can flexibly adjust the temporary storage quantity of salt grains according to different packaging requirements to meet diverse production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the components of the base frame of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the relative positions of the positioning cylinder and the active cylinder of the present invention; Figure 6 This is a schematic diagram of the components where the shaft flange of the present invention is located; Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle; Figure 8 This is a schematic diagram of the components where the positioning ring of the present invention is located; Figure 9 This is a schematic diagram of the components of the triangular clamp seat of the present invention.

[0019] In the figure: 1, base frame; 2, upper base plate; 201, guide hole; 3, positioning cylinder; 4, lower base plate; 5, movable cylinder; 6, bottom sealing plate; 7, guide pin; 8, center ring seat; 801, notch portion; 9, vertical shaft; 10, hollow guide column; 11, limit ring; 12, notch ring; 13, vertical connecting seat; 14, center gear; 15, side gear; 16, support frame; 17, discharge pipe; 171, Branching part; 18. Mounting ring; 19. Positioning ring; 20. Adjusting ring; 21. Triangular clamp seat; 22. Positioning pin; 23. Positioning groove; 24. Notched gear; 25. Rack; 26. Blocking rod; 27. Side extension rod; 28. Comb-shaped bracket; 29. Shaft flange; 30. Pressure column; 31. Rocker; 311. Sharp corner; 32. Coordination pin; 33. Coordination groove; 34. Fork-shaped branch pipe; 35. Lower shaft. DETAILED DESCRIPTION

[0020] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] See also Figures 1 to 9 The present invention provides a technical solution: a vacuum dehydration device for a salt production system, comprising a base frame 1, a storage frame for receiving salt particles and a discharge pipe 17 for transporting the salt particles to a packaging area, a nitrogen supply device and an exhaust pump arranged on the base frame 1, the discharge pipe 17 being composed of a multi-component pipe portion 171, the storage frame including an integrally formed discharge pipe, and a nitrogen discharge mechanism being provided on the base frame 1 for quantitatively transporting salt particles to the packaging area and preventing the salt particles from adhering to water; The nitrogen discharge mechanism includes a vertical shaft 9 that rotates on a fixed axis on a base frame 1, an upper base plate 2 is coaxially fixed to the top of the vertical shaft 9, and the upper base plate 2 is provided with multiple groups of guide holes 201 corresponding to the position of the discharge pipe. The upper surface of the upper base plate 2 is in sliding contact with the bottom of the discharge pipe. A lower base plate 4 is provided below the upper base plate 2 and rotates synchronously with it, and a volume component for measuring the amount of salt grains packaged in a single time is provided on the lower base plate 4; The base frame 1 is also provided with a distribution component that drives the quantitative salt particles set by the volume component into the discharge pipe 17; A comb-shaped bracket 28 is fixedly connected to the bottom of the base frame 1. Two sets of mounting rings 18 are fixedly connected to the interfaces of the comb-shaped bracket 28 corresponding to the adjacent branch pipes 171. The two sets of mounting rings 18 are provided with internal sealing components for sealing the cross section of the discharge pipe 17 to limit the flow of salt particles.

[0022] like Figure 1 、 Figure 2and Figure 6 As shown, during the supply and feeding process of the salt particles to be packaged, the salt particles that have been dehydrated once are temporarily stored in the storage frame, and the salt particles enter the volume component position through the discharge pipe and the corresponding guide hole 201, wherein the volume component can temporarily store a fixed amount of salt particles, that is, it can temporarily store the amount of salt particles required for a single package.

[0023] At the same time, as the vertical shaft 9 rotates, the relative position of the volume component temporarily storing salt particles can be changed, and when the volume component temporarily storing salt particles corresponds to the discharge pipe 17, the salt particles in the volume component can be driven by the sorting component to slide into the discharge pipe 17 under the action of gravity, and thus enter the corresponding branch pipe part 171.

[0024] Among them, two groups of inner sealing components for sealing the cross-section of the branch pipe 171 are provided on the base frame 1. In the initial state, the inner sealing component at the top is in an open state, and the inner sealing component at the bottom is in a closed state. Then, when the salt particles slide into the discharge pipe 17, the salt particles can pass through the inner sealing component at the top smoothly, and stay in a group of branch pipes 171 under the interception of the inner sealing component at the bottom.

[0025] At the same time, a fork-shaped branch pipe 34 is fixedly passed through the branch pipe part 171 in the two groups of inner sealing components. The fork-shaped branch pipe 34 includes two groups of port parts formed in one piece. The two groups of port parts are respectively connected to the gas between the exhaust pump and the nitrogen supply equipment. At this time, the inner sealing component at the top is driven to operate and to be in a closed state to ensure that the branch pipe part 171 in the two groups of inner sealing components is basically sealed, and then the natural air in the branch pipe part 171 of this group is extracted by the exhaust pump to achieve a rough separation of air and salt particles in the subsequent supply process of the salt particles.

[0026] At the same time, after the air in the branch pipe 171 to be used to accommodate the salt particles is extracted, high-temperature dry nitrogen is introduced into the branch pipe 171 of this group through the external nitrogen supply equipment and heating equipment through the fork-shaped branch pipe 34 to increase the temperature of the salt particles and avoid moisture absorption problems caused by excessive temperature drop during the subsequent supply and transportation process. Through the coordinated action of the nitrogen supply equipment and the exhaust pump, the gas in the salt particle supply process is replaced, thereby reducing the contact time between the humid air and the salt particles, thereby providing a preliminary dry space for the salt particle supply process.

[0027] Among them, the inner sealing component at the bottom is subsequently driven to operate, that is, the inner sealing component at the bottom is driven to be in an open state, and the salt particles slide to the lower outlet position of the discharge pipe 17 under the action of gravity, and then enter into the packaging bag corresponding to the outlet position of the discharge pipe 17.

[0028] At the same time, in the process of salt particles sliding down from the inner sealing component position below, the nitrogen supply equipment always provides high-temperature dry nitrogen, thereby driving the high-temperature dry nitrogen to cooperate with the salt particles and provide thrust for the sliding process of the salt particles, that is, the salt particles and the high-temperature dry nitrogen enter the packaging bag together from the lower outlet position of the discharge pipe 17.

[0029] It should be noted that during this process, the salt particles slide into the packaging bag, and the subsequent continuous introduction of high-temperature dry nitrogen can basically replace the air in the packaging bag to prevent the moisture in the natural air remaining in the packaging bag from contacting the salt particles. In the subsequent packaging process, vacuum packaging equipment can be used to completely prevent the salt particles from contacting humid air, thereby ensuring the quality of the salt particles.

[0030] Among them, by introducing high-temperature dry nitrogen into the location of the salt particles, the moisture remaining in the salt particles can be dried, and with the subsequent continuous introduction of high-temperature dry nitrogen, the moisture and water that may exist in the salt particles in the process of sliding into the packaging bag can be continuously eliminated, and the air in the packaging bag can be replaced simultaneously to avoid moisture absorption problems of the salt particles during the supply and packaging process, thereby ensuring the quality of the salt particles.

[0031] At the same time, the two sets of inner sealing components return to their initial state, and then the salt particles of the subsequent set volume are intercepted by the inner sealing component at the bottom, and the air replacement and dehydration of the subsequent salt particles are achieved through the nitrogen supply equipment and the exhaust pump.

[0032] It should be noted that the gas delivery end of the nitrogen supply equipment is in gas communication with a group of port portions of the forked branch pipe 34, while the other group of port portions of the forked branch pipe 34 is in gas communication with the gas inlet end of the air pump, so that the air pump can suck the natural air from the branch pipe portion 171, and subsequently drive the high-temperature dry gas into the branch pipe portion 171 through the nitrogen supply equipment.

[0033] In one of the more preferred embodiments, the volume assembly includes a positioning cylinder 3 fixedly connected to the lower surface of the upper base plate 2 and communicating with the material guide hole 201, and a positioning cylinder 5 is fixedly passed through the lower base plate 4, and the positioning cylinder 5 is slidably sleeved on the positioning cylinder 3; A hollow guide column 10 is slidably sleeved on the vertical shaft 9, and the hollow guide column 10 is fixedly connected to the lower base plate 4. A variable component is provided on the base frame 1 for adjusting the relative positions of the movable cylinder 5 and the positioning cylinder 3 to change the single salt grain packaging amount.

[0034] like Figure 1 、 Figure 2 and Figure 5 As shown, when a group of guide holes 201 correspond to the discharge pipe at the bottom of the storage frame, the salt particles in the storage frame enter the positioning cylinder 3 and the movable cylinder 5 below under the action of gravity, and the lower opening of the movable cylinder 5 is sealed by the separation component to prevent the leakage of salt particles.

[0035] At the same time, the salt particles can fill the internal space of the positioning cylinder 3 and part of the exposed space of the movable cylinder 5 relative to the positioning cylinder 3. The sum of the sizes of the two spaces is the set single salt particle packaging volume, and then the vertical shaft 9 and the upper base plate 2 are driven to rotate to drive the salt particles in the group of positioning cylinders 3 and the movable cylinder 5 to be fed into the discharge pipe 17, and then the set single salt particle packaging volume is subjected to air replacement and dehydration treatment.

[0036] In order to meet the packaging requirements of different amounts of salt particles, the variable assembly includes two sets of limit rings 11 fixedly mounted on the hollow guide column 10, with a gap ring 12 provided between the two sets of limit rings 11. The gap ring 12 is slidably mounted on the hollow guide column 10 and is in sliding contact with the opposite surfaces of the two sets of limit rings 11. The notch ring 12 is fixedly connected to a vertical connecting seat 13, and the base frame 1 is fixedly connected to an electric push rod that drives the vertical connecting seat 13 to move freely in the vertical direction. The top of the vertical connecting seat 13 is fixedly connected to a center ring seat 8, and the center ring seat 8 rotates on a fixed axis on the lower base plate 4.

[0037] The base frame 1 is provided with a side gear 15 driven by a motor and freely rotating in the horizontal direction. The side gear 15 rotates on a fixed axis on the base frame 1. The side gear 15 is meshed and connected with a center gear 14, and the center gear 14 is coaxially fixed on the vertical shaft 9.

[0038] like Figure 2 、 Figure 4 and Figure 5 As shown, when the motor-driven side gear 15 fixed on the base frame 1 rotates freely in the horizontal direction, the central gear 14 meshing with the side gear 15 can drive the vertical shaft 9 to rotate, thereby driving the upper base plate 2 and the lower base plate 4 to rotate synchronously to change the relative positions of the multiple groups of guide holes 201, thereby driving the positioning cylinder 3 and the lower base plate 4 where salt particles are temporarily stored to correspond to the discharge pipe 17, and subsequently, the salt particles are sent into the discharge pipe 17 under the drive of the sorting component.

[0039] At the same time, when the single salt grain packaging quantity is changed, the vertical connecting seat 13 is driven to move in the vertical direction by the electric push rod, thereby driving the notch ring 12 fixed on the vertical connecting seat 13 to upgrade synchronously. The notch ring 12 is located between the two sets of limit rings 11, and the two sets of limit rings 11 are fixed on the hollow guide column 10, thereby being able to drive the hollow guide column 10, the lower base plate 4 and the center ring seat 8 to rise and fall synchronously.

[0040] Among them, when the height of the lower base plate 4 changes, the distance between the lower base plate 4 and the upper base plate 2 changes, and the exposed length of the movable tube 5 on the positioning tube 3 changes. The internal space of the positioning tube 3 and the size of the exposed space of part of the movable tube 5 relative to the positioning tube 3 are the set single salt grain packaging amount. Therefore, by changing the exposed length of the movable tube 5 relative to the positioning tube 3, the amount of salt grains that the movable tube 5 can temporarily store is changed, thereby achieving the purpose of changing the single salt grain packaging amount to meet different packaging needs.

[0041] Based on the embodiment of the volume assembly, the displacement assembly includes a bottom sealing plate 6 that rotates on a fixed axis on the movable cylinder 5. In the initial state, the bottom sealing plate 6 does not block the bottom opening of the movable cylinder 5. The end of the bottom sealing plate 6 away from the movable cylinder 5 is fixedly connected to a guide pin 7. The end of the center ring seat 8 facing the discharge pipe 17 includes an integrally formed notch portion 801 , and the guide pin 7 is in sliding contact with the lower circumference of the center ring seat 8 .

[0042] like Figure 1-Figure 3 As shown, when the vertical shaft 9 rotates in the horizontal direction, the upper base plate 2 and the positioning cylinder 3 provided thereon can drive the movable cylinder 5 and the lower base plate 4 to rotate horizontally synchronously, thereby changing the relative positions of the positioning cylinder 3 and the movable cylinder 5 and the storage frame, thereby driving the positioning cylinder 3 and the movable cylinder 5 temporarily storing the set single salt grain packaging amount to gradually turn to the side of the discharge pipe 17.

[0043] Among them, when the bottom sealing plate 6 provided at the bottom of the group of movable cylinders 5 rotates with the movable cylinder 5, when the guide pin 7 fixed on the bottom sealing plate 6 corresponds to the position of the notched portion 801, the movable cylinder 5 is provided with a torsion spring that drives the bottom sealing plate 6 to return to its initial deflection state. The torsion spring is an existing device and a technical means well known to those skilled in the art, so it is not shown in the figure. In the initial state, the bottom sealing plate 6 does not block the lower opening of the movable cylinder 5. Then, under the action of the torsion spring, the salt particles in the movable cylinder 5 and the positioning cylinder 3 slide into the discharge pipe 17 under the action of gravity. At the same time, as the vertical shaft 9 continues to rotate, the guide pin 7 disengages from the position of the notched portion 801, and the lower surface of the center ring seat 8 restricts the guide pin 7, driving the bottom sealing plate 6 to deflect on the movable cylinder 5, and then driving the bottom sealing plate 6 to seal the lower opening of the movable cylinder 5, thereby avoiding leakage problems when salt particles are temporarily stored therein.

[0044] It should be noted that since the center ring seat 8 rotates on a fixed axis on the lower base plate 4, the height of the center ring seat 8 and the lower base plate 4 change synchronously, and the center ring seat 8 is fixedly connected to the vertical connecting seat 13. Therefore, the center ring seat 8 will not rotate with the lower base plate 4, thereby driving the integrally formed groove portion 801 on the center ring seat 8 to always face the side of the discharge pipe 17. Therefore, only the bottom sealing plate 6 facing the side of the discharge pipe 17 can restore to its initial state, so that the salt particles temporarily stored in the positioning cylinder 3 and the movable cylinder 5 corresponding to the discharge pipe 17 can be released into the discharge pipe 17.

[0045] On the basis of the embodiment of the separation assembly, the inner sealing assembly includes a positioning ring 19 fixedly connected to the inner circumference of the mounting ring 18, a positioning ring 20 is provided above the positioning ring 19, and the positioning ring 20 is rotated on the mounting ring 18 with a fixed axis, and a plurality of groups of synchronously deflected triangular clamp seats 21 are provided on the side of the positioning ring 19 facing the positioning ring 20, and the space between the plurality of triangular clamp seats 21 forms a lower cavity for the flow of salt particles; The positioning ring 19 is provided with equilateral grooves for sliding connection of multiple sets of triangular clamp seats 21, and the triangular clamp seats 21 are in sliding contact with the opposing surfaces of the positioning ring 20 and the positioning ring 19; A positioning pin 22 is fixedly connected to one side of the triangular clamp seat 21 facing the positioning ring 20 , and a positioning groove 23 for the positioning pin 22 to slide into is formed on the positioning ring 20 .

[0046] A supporting frame 16 for receiving salt particles is fixedly passed through the top of the discharge pipe 17 , the adjusting ring 20 is in sliding contact with the branch pipe portion 171 above it, and the positioning ring 19 is fixedly passed through the branch pipe portion 171 below it.

[0047] like Figure 1 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown, in the initial state, the inner sealing component at the top is in an open state, that is, a lower cavity for salt particles to flow is formed between the multiple sets of triangular clamp seats 21, and the inner sealing component at the bottom is in a closed state, that is, the multiple sets of triangular clamp seats 21 are in contact with each other to complete the purpose of sealing the salt particles.

[0048] Among them, the positioning pin 22 fixed on the triangular clamp seat 21 is slidably set on the adjustment ring 20 through the positioning groove 23. When the adjustment ring 20 rotates in the horizontal direction, it can change the positions of multiple groups of positioning grooves 23 thereon and thereby drive multiple groups of triangular clamp seats 21 to deflect synchronously on the positioning ring 19, so as to change the use status of the corresponding inner sealing component.

[0049] Furthermore, the inner seal assembly further includes a lower shaft 35 that is transmission-connected to the side gear 15 and rotates synchronously. The lower shaft 35 rotates on a fixed axis on the comb-shaped bracket 28. A shaft flange 29 is coaxially fixed to the lower shaft 35. A blocking rod 26 that reciprocates in the horizontal direction is provided on one side of the shaft flange 29. A rectangular groove is provided on the comb-shaped bracket 28 for the blocking rod 26 to slide through. A notched gear 24 is fixedly connected to the outer circumference of the adjustment ring 20 , and the notched gear 24 is meshedly connected to a rack 25 . The rack 25 and the blocking rod 26 are fixedly connected.

[0050] The shaft flange 29 is fixedly connected to a pressure column 30, and the side of the blocking rod 26 facing the shaft flange 29 is fixedly connected to a side extension rod 27, and the side extension rod 27 is in sliding contact with the pressure column 30; A swing rod 31 is provided on one side of the shaft flange 29 and is free to deflect in the horizontal direction. The swing rod 31 rotates on the comb-shaped bracket 28 and includes an integrally formed sharp corner portion 311. The pressure column 30 is in sliding contact with the sharp corner portion 311. A positioning pin 32 is fixedly connected to one end of the blocking rod 26 facing the swing rod 31 , and a positioning groove 33 for the positioning pin 32 to be slidably connected is formed on the swing rod 31 .

[0051] like Figure 1 、 Figure 6 、 Figure 7 and Figure 8 As shown, when the side gear 15 rotates to gradually drive the vertical shaft 9 to rotate and change the relative positions of the multiple groups of guide holes 201, it can drive the lower shaft 35 connected to it to rotate synchronously, and drive the shaft flange 29 fixed to the lower shaft 35 to rotate synchronously; At the same time, taking the inner sealing component at the bottom as an example, this group of inner sealing components is in a closed state in the initial state, and then intercepts the salt particles in the branch part 171 to ensure that the salt particles stay briefly in the two groups of inner sealing components. Subsequently, the positioning ring 20 is driven to deflect to change the use state of the inner sealing component at the bottom. When this group of inner sealing components is in an open state, the intercepted salt particles can be driven to slide downward under the action of gravity and eventually enter the packaging bag.

[0052] like Figure 6 and Figure 7 As shown, when the shaft flange 29 initially rotates, the pressure column 30 can push the side extension rod 27 until the two are separated, which can prompt the blocking rod 26 to drive the rack 25 to move in the horizontal direction, thereby driving the notched gear 24 and the adjusting ring 20 to rotate a certain angle in the horizontal direction through the rack 25, thereby driving the inner sealing assembly below from a closed state to an open state.

[0053] Subsequently, as the shaft boss 29 continues to rotate, the pressure column 30 will not contact the sharp corner 311 and the side extension rod 27, and the resistance sliding between the blocking rod 26 and the comb-shaped bracket 28 will occur, so that the horizontal position of the blocking rod 26 will not change, and the inner sealing component below will remain open.

[0054] Among them, when the pressure column 30 continues to rotate and is squeezed into contact with the sharp corner portion 311 until it disengages and completes a rotation cycle, the pressure column 30 squeezes the sharp corner portion 311 and then drives the rocker arm 31 to deflect in the horizontal direction, and the isotropic pin 32 fixed on the blocking rod 26 is slidably set on the rocker arm 31 through the isotropic groove 33. Therefore, when the rocker arm 31 is deflected, it can drive the isotropic pin 32 and the blocking rod 26 to move in the horizontal direction through the isotropic groove 33, thereby driving the pressure column 30 to rotate, so as to achieve the purpose of restoring the inner sealing component below to its initial state, that is, to the closed state.

[0055] At the same time, it should be noted that, taking the inner sealing assembly at the top as an example, the initial positions of the pressure columns 30 in the two groups of inner sealing assemblies are different, and thus, in the process of the shaft boss 29 completing a rotation cycle, it can first drive the inner sealing assembly at the top to convert from the initial state to the closed state, and then maintain it for a certain period of time and then return to the initial state again, that is, return to the open state.

[0056] Therefore, through the coordinated cooperation of the two sets of sealing components and the conversion and difference of the operating states, the nitrogen supply equipment and the exhaust pump are used in conjunction with each other, and the purpose of air replacement and dehydration of the salt particles temporarily stored in the branch pipe part 171 is achieved, thereby avoiding the problem of moisture absorption of the salt particles during the supply or delivery process, thereby ensuring the quality of the salt particles.

[0057] It should be noted that when the two sets of inner sealing components complete a rotation cycle and return to the initial state, the vertical shaft 9 and the upper base plate 2 rotate a certain angle to drive the adjacent movable cylinder 5 to correspond to the discharge pipe 17, and then drive the subsequent set single salt particle packaging amount to slide into the discharge pipe 17, thereby realizing an uninterrupted processing process for the salt particles.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum dehydration device for a salt production system, comprising a base frame (1), a storage frame for receiving salt particles and a discharge pipe (17) for transporting the salt particles to a packaging area, a nitrogen supply device and an exhaust pump arranged on the base frame (1), the discharge pipe (17) being composed of a plurality of pipe sections (171), the storage frame including an integrally formed discharge pipe, and characterized in that: The base frame (1) is provided with a nitrogen discharge mechanism for quantitatively transporting salt particles to the packaging area and preventing the salt particles from adhering to water; The nitrogen discharge mechanism comprises a vertical shaft (9) that rotates on a fixed axis on a base frame (1), an upper base plate (2) is coaxially fixed to the top of the vertical shaft (9), and the upper base plate (2) is provided with a plurality of groups of guide holes (201) corresponding to the positions of the discharge pipe, the upper surface of the upper base plate (2) is in sliding contact with the bottom of the discharge pipe, a lower base plate (4) that rotates synchronously with the upper base plate (2) is provided below the upper base plate (2), and a volume component for measuring the amount of salt grains packaged in a single time is provided on the lower base plate (4); The base frame (1) is also provided with a distribution component for driving the quantitative salt particles set by the volume component into the discharge pipe (17); A comb-shaped bracket (28) is fixedly connected to the bottom of the base frame (1), and two sets of mounting rings (18) are fixedly connected to the interfaces of the comb-shaped bracket (28) corresponding to the adjacent branch pipe parts (171). The two sets of mounting rings (18) are provided with inner sealing components for sealing the cross section of the discharge pipe (17) to limit the circulation of salt particles.

2. The vacuum dehydration device for a salt production system according to claim 1, characterized in that: The volume assembly comprises a positioning cylinder (3) fixedly connected to the lower surface of the upper base plate (2) and communicating with the material guide hole (201); a positioning cylinder (5) is fixedly passed through the lower base plate (4), and the positioning cylinder (5) is slidably sleeved on the positioning cylinder (3); The vertical shaft (9) is provided with a sliding sleeve having a hollow guide column (10), the hollow guide column (10) being fixedly connected to the lower base plate (4), and the base frame (1) being provided with a variable component for adjusting the relative positions of the movable cylinder (5) and the positioning cylinder (3) to change the single salt grain packaging amount.

3. The vacuum dehydration device for a salt production system according to claim 2, characterized in that: The variable assembly comprises two sets of limit rings (11) fixedly sleeved on the hollow guide column (10), a gap ring (12) is provided between the two sets of limit rings (11), and the gap ring (12) is slidably sleeved on the hollow guide column (10) and is in sliding contact with the opposite surfaces of the two sets of limit rings (11); The notch ring (12) is fixedly connected to a vertical connection seat (13), the base frame (1) is fixedly connected to an electric push rod for driving the vertical connection seat (13) to move freely in the vertical direction, the top of the vertical connection seat (13) is fixedly connected to a center ring seat (8), and the center ring seat (8) rotates on a fixed axis on the lower base plate (4).

4. The vacuum dehydration device for a salt production system according to claim 3, characterized in that: The row assembly comprises a bottom sealing plate (6) which rotates on a fixed axis on the movable barrel (5); the bottom sealing plate (6) does not block the bottom opening of the movable barrel (5) in an initial state; and a guide pin (7) is fixedly connected to one end of the bottom sealing plate (6) away from the movable barrel (5); One end of the center ring seat (8) facing the discharge pipe (17) includes an integrally formed notch portion (801), and the guide pin (7) is in sliding contact with the lower circumference of the center ring seat (8).

5. The vacuum dehydration device for a salt production system according to claim 3, characterized in that: The base frame (1) is provided with a side gear (15) driven by a motor and freely rotating in the horizontal direction. The side gear (15) rotates on a fixed axis on the base frame (1). The side gear (15) is meshedly connected with a center gear (14), and the center gear (14) is coaxially fixed on the vertical shaft (9).

6. The vacuum dehydration device for a salt production system according to claim 5, characterized in that: The inner sealing assembly comprises a positioning ring (19) fixedly connected to the inner circumference of the mounting ring (18); a positioning ring (20) is provided above the positioning ring (19); and the positioning ring (20) is rotated on the mounting ring (18) with a fixed axis; a plurality of groups of synchronously deflected triangular clamping seats (21) are provided on one side of the positioning ring (19) facing the positioning ring (20); and the spaces between the plurality of groups of triangular clamping seats (21) form a lower cavity for the circulation of salt particles; The positioning ring (19) is provided with equilateral grooves for sliding connection of multiple sets of triangular clamp seats (21), and the triangular clamp seats (21) are in sliding contact with the opposing surfaces of the positioning ring (20) and the positioning ring (19); A positioning pin (22) is fixedly connected to one side of the triangular clamp seat (21) facing the positioning ring (20), and a positioning groove (23) for the positioning pin (22) to be slidably connected is provided on the positioning ring (20).

7. The vacuum dehydration device for a salt production system according to claim 6, characterized in that: A supporting frame (16) for receiving salt particles is fixedly connected to the top of the discharge pipe (17), a positioning ring (20) is in sliding contact with the branch pipe portion (171) above it, and a positioning ring (19) is fixedly connected to the branch pipe portion (171) below it; A forked branch pipe (34) is fixedly passed through the branch pipe portion (171) in the two sets of inner sealing components. The forked branch pipe (34) includes two sets of port portions formed integrally. The two sets of port portions are respectively in gas communication with the exhaust pump and the nitrogen supply equipment.

8. The vacuum dehydration device for a salt production system according to claim 6, characterized in that: The inner seal assembly further comprises a lower shaft (35) which is in transmission connection with the side gear (15) and rotates synchronously, the lower shaft (35) being fixedly rotated on the comb-shaped bracket (28), a shaft flange (29) being coaxially fixed on the lower shaft (35), a blocking rod (26) which reciprocates in the horizontal direction being provided on one side of the shaft flange (29), and a rectangular groove for the blocking rod (26) to slide through being provided on the comb-shaped bracket (28); The outer peripheral surface of the positioning ring (20) is fixedly connected with a notched gear (24), the notched gear (24) is meshingly connected with a rack (25), and the rack (25) and the blocking rod (26) are fixedly connected.

9. The vacuum dehydration device for a salt production system according to claim 8, characterized in that: A pressure column (30) is fixedly connected to the shaft flange (29), and a side extension rod (27) is fixedly connected to the side of the blocking rod (26) facing the shaft flange (29), and the side extension rod (27) is in sliding contact with the pressure column (30); A swing rod (31) that is freely deflected in the horizontal direction is provided on one side of the shaft flange (29). The swing rod (31) is fixedly rotated on the comb-shaped bracket (28). The swing rod (31) includes an integrally formed sharp corner portion (311). The pressure column (30) is in sliding contact with the sharp corner portion (311). One end of the blocking rod (26) facing the swing rod (31) is fixedly connected to a positioning pin (32), and the swing rod (31) is provided with a positioning groove (33) for sliding connection of the positioning pin (32).

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