A high-efficiency separation device for magnesium salts in the preparation of potassium nitrate

Abstract

This invention relates to the field of chemical separation technology, and particularly to a high-efficiency separation device for magnesium salts in the preparation of potassium nitrate. The technical solution includes: a tank and a filtration mechanism disposed within the tank, and further includes a control mechanism, a locking mechanism, a sealing mechanism, and a reset mechanism. The sealing mechanism is installed on the top of the tank. The control mechanism is mechanically connected to the locking mechanism. The locking mechanism cooperates with the filtration mechanism. The reset mechanism is connected to both the filtration mechanism and the sealing mechanism at its two ends. This invention has the advantage of strong process control coordination, effectively solving the problem of unstable product purity caused by asynchronous separation processes in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of chemical separation technology, specifically to a high-efficiency separation device for magnesium salts in the preparation of potassium nitrate. Background Technology

[0002] In the industrial production of potassium nitrate, the separation and purification of magnesium salts is a crucial step determining product quality. Traditional magnesium salt separation mainly relies on processes such as precipitation, filtration, and washing, with solid-liquid separation equipment serving as the core component, directly affecting the purity and yield of the final product. With the increasing demand for high-purity potassium nitrate in the chemical industry, higher requirements are being placed on the efficiency, reliability, and ease of operation of separation equipment.

[0003] In existing potassium nitrate production, magnesium salt separation units typically employ a separate design, with the filtration mechanism and fluid control mechanism operating independently. The position adjustment of the filtration components relies on additional pneumatic, hydraulic, or electric drive systems. The operation process requires manual intervention or coordination by a complex PLC control system, resulting in common problems such as poor linkage, response delay, and low control accuracy. Especially in the critical stage of solid-liquid separation, traditional units cannot achieve precise synchronization between fluid control and filtration mechanism displacement, often resulting in premature movement or delayed locking of the filtration mechanism, causing solid-liquid mixing or product loss. At the same time, the superposition of multiple independent control systems not only increases equipment complexity and potential failure points but also makes daily maintenance and cleaning time-consuming and labor-intensive, with long maintenance times per operation, severely restricting production efficiency and affecting the batch stability of potassium nitrate products.

[0004] Therefore, there is an urgent need to develop a highly efficient separation device for magnesium salts in the preparation of potassium nitrate to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a highly efficient separation device for magnesium salts in the preparation of potassium nitrate, which has the advantages of strong process control coordination and effectively solves the problem of unstable product purity caused by asynchronous separation processes in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency separation device for magnesium salts in the preparation of potassium nitrate, comprising a tank and a filtration mechanism disposed within the tank. It also includes a control mechanism, a locking mechanism, a sealing mechanism, and a reset mechanism; the sealing mechanism is installed on the top of the tank; the control mechanism is mechanically connected to the locking mechanism; the locking mechanism cooperates with the filtration mechanism; and the reset mechanism is connected to the filtration mechanism and the sealing mechanism at both ends, respectively.

[0007] Preferably, the tank body is a cylindrical structure, with a second guide frame fixedly installed at the center of its bottom, a first guide frame fixedly installed on the lower side of one side of the outer wall, an outlet pipe, a return pipe and a drain pipe respectively connected to the side wall of the tank body, longitudinal guide ribs arranged in a ring array on the inner wall of the tank body, quick-release buckles fixedly installed in a ring array on the top of the outer wall, and a reserved opening opened on the bottom side of the first guide frame near the tank body.

[0008] When the above technical solution is adopted, the guide ridge on the inner wall of the tank and the quick-release buckle on the outer wall cooperate to realize the vertical guidance of the filtration mechanism and the quick disassembly and assembly function at the top, which has the advantages of convenient operation and stable movement.

[0009] Preferably, the sealing mechanism includes a ring frame, a retractable corrugated tube, and a top cover. A locking seat is fixedly installed in a ring array on the bottom outer side of the ring frame. The locking seat cooperates with a quick-release buckle. The top of the retractable corrugated tube is fixedly connected to the top cover, and the bottom is fixedly connected to the ring frame. The top of the top cover has an opening and is connected to an injection tube. The top of the reset mechanism is fixedly connected to the bottom of the top cover.

[0010] When the above technical solution is adopted, the structure of the retractable bellows connecting ring frame and the top cover of the sealing mechanism realizes the function of maintaining a seal when the filter mechanism moves up and down, and has the advantage of excellent dynamic sealing performance.

[0011] Preferably, it also includes a mixing mechanism, which includes a first connecting pipe, a power component and a first gate valve. The first gate valve is an electric gate valve and is connected to the outlet pipe flange. The power component is a servo motor with variable speed setting and is fixedly installed at the top of the first connecting pipe. The transmission end of the bottom of the power component is keyed to a stirring frame.

[0012] When the above technical solution is adopted, the power component of the mixing mechanism adopts a servo motor with variable speed setting, which realizes the functions of full mixing of reaction liquid and controllable flow rate, and has the advantages of high mixing efficiency and strong process adaptability.

[0013] Preferably, the control mechanism includes a second gate valve and a connecting rod. One end of the connecting rod is connected to the gate of the second gate valve, and the other end extends to the outside of the bottom of the tank and is fixedly installed with a wedge. The contact surface between the connecting rod and the second gate valve is provided with a sealing assembly. The side end of the second gate valve is connected to the return pipe through a flange.

[0014] When the above technical solution is adopted, the structure in which the connecting rod of the control mechanism is directly connected to the gate and is equipped with a sealing component realizes the integrated function of valve position control and mechanical linkage, and has the advantages of simple operation and leakage prevention.

[0015] Preferably, the locking mechanism includes a slider and a return spring. The slider is perpendicular to the second guide frame. One end of the slider is slidably installed in the second guide frame, and the connection between the slider and the second guide frame is clearance-fitted. The other end of the slider can pass through a reserved opening. The slider and the wedge are set perpendicular to each other. The return spring is a compression spring, and its two ends are fixedly connected to the slider and the second guide frame, respectively.

[0016] When the above technical solution is adopted, the structure in which the slider of the locking mechanism moves synchronously with the return spring realizes the automatic locking and releasing function of the filter mechanism, and has the advantages of reliable operation and rapid response.

[0017] Preferably, the filtering mechanism includes an upper clamp, a lower clamp, a filter screen, and a limiting post. The filter screen is clamped and installed between the upper clamp and the lower clamp by screws. The outer sides of the upper clamp and the lower clamp are respectively provided with a first sliding groove and a second sliding groove in an annular shape. The first sliding groove and the second sliding groove are slidably engaged with the guide ridge. The limiting post is fixedly installed at the bottom center of the lower clamp and has a limiting groove. The limiting post can be vertically inserted into the inner side of the second guide frame, and the slider can be inserted into the limiting groove.

[0018] When the above technical solution is adopted, the structure of the upper and lower clamps of the filter mechanism with the outer sliding grooves and guide ribs realizes the guiding function of the filter mechanism in vertical movement in the tank, and has the advantages of smooth movement and accurate positioning.

[0019] Preferably, the reset mechanism is a tension spring arranged in a circular array, with its bottom fixedly connected to the top of the filter mechanism and its top fixedly connected to the top cover.

[0020] When the above technical solution is adopted, the ring array distribution structure of the tension spring of the reset mechanism realizes the function of uniform force when the filter mechanism moves upward, and has the advantages of stable reset and long service life.

[0021] Preferably, the control mechanism further includes a second connecting pipe and a bottom cover. The top end of the second connecting pipe is connected to the bottom flange of the first connecting pipe, and the bottom flange is fitted with the bottom cover. The bottom end of the stirring rack extends into the second connecting pipe and is rotatably connected to the bottom cover through a sealed bearing.

[0022] When the above technical solution is adopted, the structure of the stirring rack connected to the bottom cover through the sealed bearing realizes the sealed rotation function of the stirring system, and has the characteristics of good sealing performance and stable operation.

[0023] Preferably, the wedge block has an inclined surface on its side, and the slider end has a contact surface that matches the inclined surface, forming a mating structure that drives the slider to move horizontally when the wedge block moves vertically.

[0024] When the above technical solution is adopted, the matching structure between the inclined surface on the side of the wedge block and the contact surface at the end of the slider realizes the conversion function between vertical and horizontal motion, and has the advantages of reliable operation and high conversion efficiency.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves automated, interconnected separation processes by incorporating a filtration mechanism within the tank and mechanically connecting a control mechanism and a locking mechanism externally. A reset mechanism is connected to both the filtration and sealing mechanisms, respectively. The control mechanism directly drives the locking mechanism, enabling precise control of the filtration mechanism's position. The reset mechanism automatically restores the filtration mechanism to its initial position after unlocking. The coordinated actions of all mechanisms eliminate the need for manual intervention and multiple operations. This design ensures a sequential and orderly process for liquid level control, sedimentation separation, and filter residue discharge during filtration, avoiding the loose connections caused by independent operations in traditional devices. When the control mechanism is activated, the locking mechanism automatically locks the filtration mechanism, ensuring complete filtration. When the control mechanism is deactivated, the locking mechanism releases the filtration mechanism, which then quickly resets under the action of the reset mechanism, achieving seamless process integration. The strong coordination of the entire process effectively solves the problem of unstable product purity caused by asynchronous separation processes in existing technologies, improving the quality and production efficiency of potassium nitrate products. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3 For the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the connection structure between the mixing mechanism and the control mechanism of the present invention; Figure 5 This is a schematic diagram of the tank body structure from one perspective of the present invention; Figure 6 This is a schematic diagram of the tank body from another perspective of the present invention; Figure 7 This is a schematic diagram of the sealing mechanism of the present invention; Figure 8 This is a schematic diagram of the connection structure between the filtering mechanism and the reset mechanism of the present invention.

[0027] In the diagram: 1. Tank body; 11. Outlet pipe; 12. Return pipe; 13. Guide rib; 14. Quick-release buckle; 15. First guide frame; 151. Reserved opening; 16. Second guide frame; 17. Drain pipe; 2. Sealing mechanism; 21. Ring frame; 211. Locking seat; 22. Telescopic corrugated pipe; 23. Top cover; 231. Injection pipe; 3. Mixing mechanism; 31. First connecting pipe; 32. Power assembly; 321. Stirring frame; 33. ... 4. Gate valve; 5. Control mechanism; 6. Second connecting pipe; 7. Bottom cover; 8. Second gate valve; 9. Gate plate; 10. Connecting rod; 11. Wedge block; 12. Locking mechanism; 23. Sliding block; 24. Return spring; 35. Filtering mechanism; 46. Upper clamp; 57. First slide groove; 68. Lower clamp; 69. Second slide groove; 10. Filter screen; 11. Limiting post; 12. Guide groove; 13. Limiting groove; 44. Reset mechanism. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: Figure 1 This is an overall structural diagram of the high-efficiency magnesium salt separation device in the preparation of potassium nitrate provided in an embodiment of the present invention. Figure 2 This is a schematic diagram showing the cooperation between the filtration mechanism and the guide structure of the present invention. Figure 3 This is an exploded view of the sealing mechanism structure of the present invention. Figures 1 to 3 As shown, the device includes a tank 1, a sealing mechanism 2, and a filtering mechanism 6.

[0030] Tank 1 is a cylindrical structure made of 316L stainless steel. The inner surface is electrolytically polished to ensure corrosion resistance and surface smoothness during the potassium nitrate preparation process. A sealing mechanism 2 is detachably installed on the top. A second guide frame 16 is welded and installed at the center of the bottom. An outlet pipe 11 is welded and connected to the top of one side, and a return pipe 12 is welded and connected to the bottom of one side. A drain pipe 17 is installed and connected to the bottom of the other side. The inner wall of tank 1 is welded and installed with longitudinal guide ribs 13 in a ring array. The top of the outer wall is fixedly installed with quick-release buckles 14 in a ring array. The bottom of tank 1 below the return pipe 12 is fixedly installed with a first guide frame 15 by bolts. A reserved opening 151 is opened on the bottom of the first guide frame 15 near the tank 1.

[0031] The sealing mechanism 2 includes a ring frame 21, a retractable bellows 22, and a top cover 23. A locking seat 211 is fixedly installed in a ring array on the outer side of the ring frame 21. The locking seat 211 cooperates with a quick-release buckle 14 to detachably install the sealing mechanism 2 onto the top of the tank body 1. Both the ring frame 21 and the top cover 23 are made of 304 stainless steel, possessing good mechanical strength and corrosion resistance. A retractable bellows 22 is fixedly installed on the top of the ring frame 21. The retractable bellows 22 is made of polytetrafluoroethylene (PTFE), possessing excellent acid and alkali corrosion resistance and elastic deformation capability. A top cover 23 is fixedly installed on the top of the retractable bellows 22. The top of the top cover 23 has an opening and is welded to a liquid injection pipe 231, which is made of the same material as the tank body 1.

[0032] The filtration mechanism 6 includes an upper clamp 61, a lower clamp 62, a filter screen 63, and a limiting post 64. Both the upper clamp 61 and the lower clamp 62 are made of 316L stainless steel. The filter screen 63 is clamped and installed on the opposite side by screws. The filter screen 63 is a high-precision filter screen made of nickel-based alloy with a mesh count of 250 mesh and an aperture of 60μm. The upper clamp 61 and the lower clamp 62 are respectively provided with a first sliding groove 611 and a second sliding groove 621 in an annular shape on their outer sides. The first sliding groove 611 and the second sliding groove 621 are correspondingly arranged and are adapted to the guide rib 13 to guide the filtration mechanism 6 to slide vertically within the tank 1 along the guide rib 13. A limiting post 64 is fixedly installed at the center of the bottom of the lower clamp 62. The limiting post 64 is made of the same material as the lower clamp 62. A guide groove 641 is provided on one side of the bottom, and a limiting groove 642 is provided on the limiting post 64 above the guide groove 641.

[0033] like Figure 2 As shown, the filter mechanism 6 precisely engages with the guide rib 13 on the inner wall of the tank 1 via the first slide groove 611 and the second slide groove 621, ensuring stability and positioning accuracy during vertical movement; the guide groove 641 at the bottom of the limiting post 64 is designed to interact with the slider 51 in subsequent embodiments to achieve automatic guidance during the downward movement of the filter mechanism 6.

[0034] like Figure 3 As shown, the sealing mechanism 2 adopts a split design. The ring frame 21 is quickly installed and disassembled by the quick-release buckle 14 on the top of the tank body 1 through the locking seat 211. The telescopic bellows 22 connects the ring frame 21 and the top cover 23, which can maintain a sealed state when the filter mechanism 6 moves up and down, while allowing vertical displacement.

[0035] The retractable corrugated pipe 22 and quick-release buckle 14 are existing technology components and will not be explained in detail here.

[0036] Example 2: Figure 4 This is a schematic diagram of the mixing mechanism of the present invention. Figure 5 This is a cross-sectional view of the control mechanism structure of the present invention. Figure 6This is a schematic diagram showing the connection between the control mechanism and the locking mechanism of the present invention. Based on Embodiment 1, as follows... Figures 4 to 6 As shown, the device also includes a mixing mechanism 3 and a control mechanism 4.

[0037] The mixing mechanism 3 includes a first connecting pipe 31, a power component 32, and a first gate valve 33. The first connecting pipe 31 is made of 316L stainless steel, and the first gate valve 33 is installed on the side flange. The first gate valve 33 is an electric gate valve, and the valve body and valve core are both made of Hastelloy C276, which is resistant to nitric acid corrosion. The first gate valve 33 is connected to the flange of the outlet pipe 11. The power component 32 is installed on the top flange of the first connecting pipe 31. The power component 32 is a servo motor with variable speed settings. The transmission end of the power component 32 is connected to a stirring frame 321. The stirring frame 321 is made of titanium alloy and coated with a nitric acid corrosion resistant coating. It has a cross-shaped structure, which can realize all-round stirring and is particularly suitable for uniform mixing of magnesium salt suspension in the preparation of potassium nitrate.

[0038] The control mechanism 4 includes a second connecting pipe 41, a bottom cover 42, a second gate valve 43, a gate plate 431, a connecting rod 44, and a wedge block 45. The second connecting pipe 41 is made of the same material as the first connecting pipe 31, and its top end is connected to the bottom flange of the first connecting pipe 31. The bottom flange of the second connecting pipe 41 is fitted with the bottom cover 42. The bottom end of the stirring rack 321 extends into the second connecting pipe 41 and is rotatably connected to the bottom cover 42 through a sealed bearing. The second gate valve 43 is connected to the side flange of the second connecting pipe 41. The valve body of the second gate valve 43 is made of 316L stainless steel, and the internal sealing element is made of perfluoroether rubber (FFKM). It is connected to the return pipe 12 through a flange. A gate plate 43 is slidably installed inside the second gate valve 43. 1. The gate plate 431 is made of corrosion-resistant stainless steel and its surface is hardened. A screw is rotatably mounted on the top of the gate plate 431, and a handwheel is threaded on the top of the screw. The handwheel is rotatably mounted on the top of the second gate valve 43 via the mounting bracket. A connecting rod 44 is fixedly mounted on the bottom of the gate plate 431 through the bottom of the second gate valve 43. A sealing component is provided on the contact surface between the connecting rod 44 and the second gate valve 43. The sealing component is a mechanical seal ring made of graphite-silicon carbide composite material resistant to nitric acid corrosion. Both the connecting rod 44 and the wedge 45 are made of 316L stainless steel. The wedge 45 is fixedly mounted on the bottom of the connecting rod 44, and both the connecting rod 44 and the wedge 45 slide vertically within the first guide frame 15.

[0039] like Figure 6 As shown, the connecting rod 44 of the control mechanism 4 passes through the first guide frame 15, and the wedge 45 fixed at its bottom forms a cooperative relationship with the slider 51 in the subsequent embodiment. When the second gate valve 43 is opened or closed, the gate plate 431 drives the connecting rod 44 to move up and down, thereby causing the wedge 45 to produce a vertical displacement, providing driving force for the locking mechanism 5.

[0040] The electric gate valve, servo motor, and mechanical seal ring are all existing technologies and will not be explained in detail here.

[0041] Example 3: Figure 7 This is a schematic diagram showing the cooperation between the locking mechanism and the filtering mechanism of the present invention. Figure 8 This is a schematic diagram of the installation of the reset mechanism of the present invention. Based on Embodiments 1 and 2, as follows... Figures 7 to 8 As shown, the device also includes a locking mechanism 5 and a reset mechanism 7.

[0042] The locking mechanism 5 includes a slider 51 and a return spring 52. The slider 51 is made of wear-resistant 3Cr13 stainless steel with a nitrided surface. One end slides within the second guide frame 16, and the other end of the slider 51 can pass through the reserved opening 151 and cooperate with the wedge 45 in embodiment 2. The slider 51 and the wedge 45 are perpendicular to each other. Return springs 52 are installed at both ends of the slider 51. The return springs 52 are compression springs made of corrosion-resistant 17-7PH stainless steel wire. The end of the return spring 52 away from the slider 51 is fixedly connected to the second guide frame 16.

[0043] The reset mechanism 7 is a tension spring installed in a ring array on the top of the filter mechanism 6. It is made of Inconel X750 alloy wire, which is resistant to nitric acid corrosion and has the characteristic of maintaining stable elasticity in a high-temperature nitric acid environment. The top of the reset mechanism 7 is fixedly connected to the bottom of the top cover 23.

[0044] like Figure 7 As shown, the slider 51 of the locking mechanism 5 is normally in the extended state under the action of the return spring 52. When the filter mechanism 6 moves down, the guide groove 641 of the limiting post 64 pushes the slider 51 to retract. When the filter mechanism 6 reaches the bottom, the wedge 45 in embodiment 2 moves up, pushing the slider 51 to move horizontally, so that its end is inserted into the limiting groove 642, thereby locking the filter mechanism 6.

[0045] like Figure 8 As shown, the tension springs of the reset mechanism 7 are evenly distributed around the top of the filter mechanism 6. When the locking mechanism 5 is released, the elastic force of the tension springs causes the filter mechanism 6 to move upward smoothly, thus achieving solid-liquid separation.

[0046] The above scheme employs a mechanical safety interlocking system constructed through the linkage control of the second gate valve 43 and the locking mechanism 5. The movement of the gate plate 431 of the second gate valve 43 is converted into the vertical displacement of the wedge block 45 via the connecting rod 44. The interaction between the wedge block 45 and the slider 51 forms a reliable mechanical locking point, ensuring 100% certainty and reliability in the position locking of the filter mechanism 6 during operation. This purely mechanical linkage design not only avoids the complexity and failure risks of electrical control but also achieves precise execution of mechanical logic, ensuring that the locking and releasing operations of the filter mechanism 6 strictly follow the preset process flow under any operating condition. This fundamentally solves the problem of solid-liquid separation failure caused by control malfunction in traditional devices. Simultaneously, the linkage mechanism structurally achieves a self-locking function, maintaining a stable working state even under vibration or pressure fluctuations, significantly improving the operational safety and service life of the device. All materials are selected specifically for the chemical environment characteristics of the potassium nitrate preparation process, ensuring long-term stable operation of the device in strongly acidic solutions containing nitrate ions, preventing the generation of corrosion products that contaminate the product, and guaranteeing the purity of the potassium nitrate product.

[0047] Working principle and usage process of this invention: The filter mechanism 6 is elastically connected to the top cover 23 via the reset mechanism 7, and the sealing mechanism 2 is installed on the top of the tank 1. Quick installation is achieved by the quick-release buckle 14 cooperating with the locking seat 211. Then, the top cover 23 is pressed to deform the retractable bellows 22, thereby causing the filter mechanism 6 to move vertically along the guide ridge 13 to the bottom of the inner side of the tank 1. During this process, when the limiting post 64 moves down, the guide groove 641 pushes one end of the slider 51. After the limiting post 64 continues to move down, the other end of the slider 51 is inserted into the reserved opening 151. When the filter mechanism 6 has completely moved to the bottom of the inner side of the tank 1, the second gate valve 43 is opened, thereby causing the wedge 45 to move up, and then causing the end of the slider 51 away from the wedge 45 to be inserted into the limiting groove 642, thereby locking the position of the filter mechanism 6 in the tank 1.

[0048] Open the first gate valve 33 and the second gate valve 43, close the drain pipe 17, and inject liquid into the tank 1 through the injection pipe 231 in sequence, making the liquid level higher than the outlet pipe 11, and then close the injection pipe 231; start the power unit 32, and use the stirring rack 321 to fully stir and mix the mixture in the tank 1. After mixing for a period of time, the power assembly 32 and the first gate valve 33 are turned off. After standing still for a period of time, the second gate valve 43 is turned off. At this time, the gate plate 431 drives the connecting rod 44 to move down and the wedge block 45 to move down. Thus, under the action of the reset spring 52, the slider 51 moves to the side of the wedge block 45, releasing the lock on the filter mechanism 6. Then, under the action of the reset mechanism 7, the filter mechanism 6 moves upward inside the tank 1. At this time, the solid is located on the opposite side of the filter mechanism 6 and the sealing mechanism 2, and the liquid is located below the filter mechanism 6. By disassembling the quick-release buckle 14 to remove the sealing mechanism 2, the solid can be collected and processed, and the liquid can be discharged by opening the drain pipe 17.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency separation device for magnesium salts in the preparation of potassium nitrate, comprising a tank (1) and a filter mechanism (6) disposed within the tank (1), characterized in that: It also includes a control mechanism (4), a locking mechanism (5), a sealing mechanism (2) and a reset mechanism (7); the sealing mechanism (2) is installed on the top of the tank (1); the control mechanism (4) is mechanically connected to the locking mechanism (5); the locking mechanism (5) cooperates with the filtering mechanism (6); the reset mechanism (7) is connected to the filtering mechanism (6) and the sealing mechanism (2) at both ends respectively.

2. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 1, characterized in that, The tank (1) is a cylindrical structure. A second guide frame (16) is fixedly installed at the center of its bottom. A first guide frame (15) is fixedly installed on the lower side of the outer wall. The side wall of the tank (1) is connected to the liquid outlet pipe (11), the liquid return pipe (12) and the liquid drain pipe (17). The inner wall of the tank (1) is provided with longitudinal guide ribs (13) in a ring array. The top of the outer wall is fixedly installed with quick-release buckles (14) in a ring array. The first guide frame (15) has a reserved opening (151) at the bottom of the side of the tank (1) close to the tank (1).

3. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 1, characterized in that, The sealing mechanism (2) includes a ring frame (21), a retractable corrugated tube (22) and a top cover (23). The bottom of the outer side of the ring frame (21) is fixedly installed with a locking seat (211) in a ring array. The locking seat (211) cooperates with the quick-release buckle (14). The top of the retractable corrugated tube (22) is fixedly connected to the top cover (23) and the bottom is fixedly connected to the ring frame (21). The top of the top cover (23) has an opening and is connected to an injection tube (231). The top of the reset mechanism (7) is fixedly connected to the bottom of the top cover (23).

4. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 1, characterized in that, It also includes a mixing mechanism (3), which includes a first connecting pipe (31), a power component (32) and a first gate valve (33). The first gate valve (33) is an electric gate valve and is connected to the flange of the liquid outlet pipe (11). The power component (32) is a servo motor with variable speed setting and is fixedly installed at the top of the first connecting pipe (31). The transmission end of the power component (32) is keyed to a stirring rack (321).

5. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 1, characterized in that, The control mechanism (4) includes a second gate valve (43) and a connecting rod (44). One end of the connecting rod (44) is connected to the gate plate (431) of the second gate valve (43), and the other end extends to the outside of the bottom of the tank (1) and is fixedly installed with a wedge (45). The contact surface between the connecting rod (44) and the second gate valve (43) is provided with a sealing component. The side end of the second gate valve (43) is connected to the return pipe (12) through a flange.

6. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 5, characterized in that, The locking mechanism (5) includes a slider (51) and a return spring (52). The slider (51) is perpendicular to the second guide frame (16). One end of the slider (51) is slidably installed in the second guide frame (16), and the connection between the slider (51) and the second guide frame (16) is clearance-fitted. The other end of the slider (51) can pass through the reserved opening (151). The slider (51) and the wedge (45) are set perpendicular to each other. The return spring (52) is a compression spring, and its two ends are fixedly connected to the slider (51) and the second guide frame (16) respectively.

7. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 1, characterized in that, The filtering mechanism (6) includes an upper clamp (61), a lower clamp (62), a filter screen (63), and a limiting post (64). The filter screen (63) is clamped and installed between the upper clamp (61) and the lower clamp (62) by screws. The upper clamp (61) and the lower clamp (62) are respectively provided with a first sliding groove (611) and a second sliding groove (621) in an annular shape on the outer side. The first sliding groove (611) and the second sliding groove (621) slide in cooperation with the guide ridge (13). The limiting post (64) is fixedly installed at the bottom center of the lower clamp (62) and a limiting groove (642) is provided on it. The limiting post (64) can be vertically inserted into the inner side of the second guide frame (16), and the slider (51) can be inserted into the limiting groove (642).

8. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 1, characterized in that, The reset mechanism (7) is a tension spring, which is arranged in a ring array. Its bottom is fixedly connected to the top of the filter mechanism (6), and its top is fixedly connected to the top cover (23).

9. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 5, characterized in that, The control mechanism (4) also includes a second connecting pipe (41) and a bottom cover (42). The top end of the second connecting pipe (41) is connected to the bottom flange of the first connecting pipe (31), and the bottom flange is fitted with the bottom cover (42). The bottom end of the stirring rack (321) extends into the second connecting pipe (41) and is rotatably connected to the bottom cover (42) through a sealed bearing.

10. The high-efficiency separation device for magnesium salts in the preparation of potassium nitrate according to claim 6, characterized in that, The wedge (45) has an inclined surface on its side, and the slider (51) has a contact surface at its end that matches the inclined surface, forming a mating structure that drives the slider (51) to move horizontally when the wedge (45) moves vertically.

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