High-efficiency pre-reactor for anhydrous hydrogen fluoride

Abstract

The present invention relates to the field of reaction devices for the production of anhydrous hydrogen fluoride, specifically to an efficient pre-reactor for anhydrous hydrogen fluoride, comprising a reaction tank, the bottom of which is fixedly connected to a transmission motor, and the rotating end of the transmission motor passes through the reaction tank and is fixedly connected to a transmission rod, the transmission rod being rotatably connected between the top and bottom of the reaction tank. This efficient pre-reactor for anhydrous hydrogen fluoride is composed of a filtering and crushing mechanism and a transmission mechanism; through the coordinated use of components such as the transmission rod, the filtering and crushing mechanism and the transmission mechanism, when the transmission rod rotates with a cross-shaped stirring blade, the transmission mechanism and the filtering and crushing mechanism cooperate to extend the filter plate from the side wall of the filter sleeve and move toward the inner wall of the reaction tank, pressing the filtered large-particle reactants against the inner wall of the reaction tank, and at the same time, the filter sleeve rotates synchronously with the cross-shaped stirring blade, so that the large-particle reactants and the inner wall of the reaction tank are subjected to friction and crushing, thereby improving the reaction effect of fluorite powder.

Description

Technical Field

[0001] The invention relates to the field of reaction devices for producing anhydrous hydrogen fluoride, in particular to a high-efficiency pre-reactor for anhydrous hydrogen fluoride. Background Art

[0002] The traditional method of producing anhydrous hydrogen fluoride is to slightly mix fluorite powder and sulfuric acid to produce hydrogen fluoride. At this time, the stirring rod inside the reactor needs to be rotated to mix the fluorite powder and sulfuric acid liquid.

[0003] An existing patent (publication number: CN117282396A) discloses a high-efficiency pre-reactor device for anhydrous hydrogen fluoride. The device comprises a frame with an operating platform mounted on top, a loading device mounted on one side of the platform, a stirring device connected to the loading device, and a heating base mounted on the bottom of the stirring device. During the implementation of this solution, the inventors discovered that the following problems in the prior art were not adequately addressed: 1. Due to the uneven size uniformity of fluorite powder particles, when larger fluorite particles are present within the fluorite powder, the large particles of fluorite have difficulty reacting quickly with sulfuric acid during use in the reactor; 2. The device stirs the fluorite powder solely via a stirring shaft. Since fluorite particles produce gypsum during the reaction, which can only be removed from the surface of the fluorite particles through prolonged stirring, efficient removal of the gypsum is difficult, impacting reaction efficiency. Summary of the Invention

[0004] The present invention aims to provide a high-efficiency pre-reactor for anhydrous hydrogen fluoride to address the following issues raised in the background art: 1. During use, some existing anhydrous hydrogen fluoride production reactors make it difficult for large fluorite particles to react quickly with sulfuric acid; 2. During use, some existing anhydrous hydrogen fluoride production reactors make it difficult to efficiently clean gypsum produced on the surface of the fluorite particles. To achieve the above objectives, the present invention provides the following technical solutions: a high-efficiency pre-reactor for anhydrous hydrogen fluoride, comprising:

[0005] A reaction tank, wherein the bottom of the reaction tank is fixedly connected to a transmission motor, and the rotating end of the transmission motor passes through the reaction tank and is fixedly connected to a transmission rod, the transmission rod is rotatably connected between the top and bottom of the reaction tank, and the lower part of the transmission rod is fixedly sleeved with a cross-shaped stirring blade for mixing, and the side wall of the cross-shaped stirring blade overlaps the inner wall of the reaction tank;

[0006] Also includes:

[0007] A support ring, the inner ring of which is vertically slidably connected to the surface of the transmission rod, a filtering and crushing mechanism is movably connected between the surface of the support ring and the surface of the cross-shaped stirring blade, a pull rod is vertically inserted through the top of the reaction tank, and two pull rods are provided, the lower parts of the two pull rods are symmetrically and movably connected to the top of the filtering and crushing mechanism, and the movement of the pull rods causes the filtering and crushing mechanism to expand around and crush the filtered reactants;

[0008] The top of the reaction tank is rotatably connected to an adjusting cylinder, and a guide groove is provided on the outer wall of the adjusting cylinder. The upper parts of the two pull rods are slidably connected to the inside of the guide groove. A transmission mechanism that cooperates with the adjusting cylinder is movably connected between the top of the transmission rod and the top surface of the reaction tank. The transmission mechanism cooperates with the pull rod to carry the filtering and crushing mechanism to move back and forth in stages inside the reaction tank.

[0009] Preferably, the filtering and crushing mechanism includes an L-shaped guide rod, and the L-shaped guide rods are provided in four. The four L-shaped guide rods are fixedly connected to the top of the support ring at equal intervals along the circumference. The upper part of the transmission rod is movably sleeved with an adjustment ring that cooperates with the support ring. The outer ring of the adjustment ring is provided with arc grooves all around. The four arc grooves correspond one-to-one to the four L-shaped guide rods. The upper part of the L-shaped guide rod is slidably connected to the inside of the corresponding arc groove. The bottom of the adjustment ring is fixedly connected with a damping telescopic rod all around, and the bottom of the damping telescopic rod is overlapped on the top of the support ring.

[0010] The top of the adjusting ring is movably connected to the bottom of the two pull rods, and the upper part of the outer ring of the adjusting ring is hinged with four arc-shaped push plates at equal distances along the circumference. The outer ring of the supporting ring is fixedly connected with four connecting plates at equal distances along the circumference. The four connecting plates correspond to the four sides of the cross-shaped stirring blades one by one, and sliding grooves are provided on both sides of the connecting plates.

[0011] A filter sleeve is movably connected between two adjacent connecting plates, and the side wall of the filter sleeve overlaps the blade position of the cross-shaped stirring blade. The four opposite sides of the filter sleeves are fixedly connected with a spring telescopic rod, and the four spring telescopic rods correspond to the four arc-shaped push plates one by one. The top of the spring telescopic rod is rotatably connected to the end of the corresponding arc-shaped push plate. Grooves are provided on both sides of the filter sleeve, and the interior of the groove is slidably connected with an arc-shaped slide, and nine spring pressure rods are equidistantly distributed on the surface of the arc-shaped slide, and filter plates matching the grooves are fixedly connected between the movable ends of the nine spring pressure rods, and a sliding pin is fixedly connected to the side wall of the upper part of the arc-shaped slide, and the sliding pin is slidably connected to the inside of the slide groove of the corresponding connecting plate side wall.

[0012] Preferably, a connecting bearing is fixedly connected to the top of the adjusting ring, and an outer ring of the connecting bearing is fixedly connected to the bottoms of the two pull rods.

[0013] Preferably, four inclined guide plates are fixedly connected to the bottom of the cross-shaped stirring blade at equal intervals along the circumference, and the four inclined guide plates correspond to the four filter sleeves one by one.

[0014] Preferably, the inner wall of the groove is set as an inclined surface, the side end of the filter plate is provided with a chamfer matched with the inclined surface, and the filter sleeve, the arc-shaped slide plate and the filter plate are all set as metal mesh filter materials.

[0015] Preferably, the transmission mechanism includes a half gear, which is fixedly sleeved on the top of the transmission rod, the top of the reaction tank is rotatably connected to a circular gear, the side wall of the circular gear meshes with the side wall of the half gear, the top of the reaction tank is rotatably connected to a gear ring, the inner ring of the gear ring meshes with the side wall of the circular gear, and the outer ring of the gear ring is fixedly connected to a shifting sleeve, the inner wall of the shifting sleeve is fixedly connected to a compression spring, one end of the compression spring is fixedly connected to a shifting block, and the lower part of the inner wall of the adjusting cylinder is symmetrically fixedly connected to a stopper that cooperates with the shifting block;

[0016] The bottom of the shift block is fixedly connected with a reset pin, and the top of the reaction tank is fixedly connected with a wedge block matched with the reset pin.

[0017] Preferably, a strip groove is provided at the bottom of the pull sleeve, and the reset pin is slidably connected inside the strip groove.

[0018] Preferably, a slag discharge valve is fixedly connected to the bottom of the reaction tank, and a feed valve is fixedly connected to the top of the reaction tank.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the present invention, through the coordinated use of components such as the transmission rod, the filtering and crushing mechanism and the transmission mechanism, when the transmission rod rotates with the cross-shaped stirring blade, the transmission mechanism and the filtering and crushing mechanism cooperate to make the filter plate extend from the side wall of the filter sleeve and move toward the inner wall of the reaction tank, so that the filtered large-particle reactants are pressed against the inner wall of the reaction tank. At the same time, the filter sleeve rotates synchronously with the cross-shaped stirring blade, so that the large-particle reactants and the inner wall of the reaction tank are frictionally crushed, thereby improving the reaction effect of fluorite powder.

[0021] In the present invention, by using the reaction tank, filter plate, filter sleeve and other components in combination, when the filter plate and filter sleeve cooperate to press the large-particle reactants against the inner wall of the reaction tank for friction, the crushed reactants can scrape off the gypsum produced on the surface of the reactants when passing through the filter sleeve and filter plate, thereby further improving the reaction effect of fluorite powder.

[0022] In the present invention, by cooperating with components such as the reaction tank, the support ring and the transmission mechanism, the filter sleeve and the filter plate can be cyclically lowered from the upper part of the reaction tank and then unfolded, and then raised and retracted, thereby forming a reciprocating operation to process large-particle reactants and effectively improve the reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a side view of the position of the reaction tank and the regulating cylinder of the present invention;

[0024] Figure 2 A side sectional view of the reaction tank and the cross-shaped stirring blade of the present invention;

[0025] Figure 3 A side view showing the positions of the support ring and the adjustment ring of the present invention;

[0026] Figure 4 A side cross-sectional view of a local portion of the filter sleeve and the connecting plate of the present invention;

[0027] Figure 5 For the present invention Figure 4 A magnified view of the structure at center A;

[0028] Figure 6 A side view of the local position of the adjustment ring and the damping telescopic rod of the present invention;

[0029] Figure 7 It is a side sectional view of the local position of the adjustment cylinder and the gear ring of the present invention;

[0030] Figure 8 A top view of the partial positions of the half gear and the circular gear of the present invention;

[0031] Figure 9 A side sectional view of a local position of the spring pressure rod and the filter plate of the present invention;

[0032] Figure 10 A side view of the sleeve and the partial position of the pull-out of the present invention;

[0033] Figure 11 A side cross-sectional view showing the positions of the support ring and the transmission rod of the present invention;

[0034] Figure 12 It is a side view of the local position of the filter sleeve and the cross-shaped stirring blade of the present invention.

[0035] In the figure: 1. reaction tank; 2. transmission motor; 3. transmission rod; 4. cross-shaped stirring blade; 5. support ring; 6. filtering and crushing mechanism; 601. L-shaped guide rod; 602. adjusting ring; 603. arc groove; 604. damping telescopic rod; 605. arc-shaped push plate; 606. slide groove; 607. filter sleeve; 608. spring telescopic rod; 609. groove; 610. arc slide; 611. spring pressure rod; 612. filter plate; 613. sliding pin; 614. connecting plate; 7. pull rod; 8. adjusting cylinder; 9. guide groove; 10. transmission mechanism; 101. half gear; 102. circular gear; 103. gear ring; 104. shifting sleeve; 105. compression spring; 106. shifting block; 107. stop block; 108. reset pin; 109. wedge block. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe 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.

[0037] See also Figures 1 to 12 The present invention provides a technical solution: a high-efficiency pre-reactor for anhydrous hydrogen fluoride, comprising:

[0038] A reaction tank 1 is provided, wherein a transmission motor 2 is fixedly connected to the bottom of the reaction tank 1, and a transmission rod 3 is fixedly connected to the rotating end of the transmission motor 2 through the reaction tank 1, the transmission rod 3 is rotatably connected between the top and the bottom of the reaction tank 1, and a cross-shaped stirring blade 4 for mixing is fixedly sleeved on the lower part of the transmission rod 3, and the side wall of the cross-shaped stirring blade 4 overlaps the inner wall of the reaction tank 1. It should be noted that the four blades of the cross-shaped stirring blade 4 isolate the interior of the reaction tank 1 into four chambers. When the cross-shaped stirring blade 4 rotates with the transmission rod 3, the reactants are transported to the interior of the reaction tank 1, so that the reactants are evenly dispersed inside the four chambers.

[0039] Also includes:

[0040] The inner ring of the support ring 5 is vertically slidably connected to the surface of the transmission rod 3. A filtering and crushing mechanism 6 is movably connected between the surface of the support ring 5 and the surface of the cross-shaped stirring blade 4. A pull rod 7 is vertically inserted into the top of the reaction tank 1, and two pull rods 7 are provided. The lower parts of the two pull rods 7 are symmetrically and movably connected to the top of the filtering and crushing mechanism 6. The movement of the pull rods 7 spreads the filtering and crushing mechanism 6 around and crushes the filtered reactants. It should be noted that: the top of the reaction tank 1 is symmetrically provided with perforations, the pull rods 7 are movably inserted into the inside of the perforations, and the inner wall of the perforations is fixedly connected with a sealing ring that matches the pull rods 7. When the pull rods 7 move up and down on the top of the reaction tank 1, the sealing of the inside of the reaction tank 1 is ensured by the sealing ring; the inner ring of the support ring 5 is provided with a positioning groove, and a positioning bar is fixedly connected to the upper part of the transmission rod 3. The support ring 5 is slidably connected to the positioning bar through the positioning groove.

[0041] The top of the reaction tank 1 is rotatably connected to an adjustment cylinder 8, and a guide groove 9 is provided on the outer wall of the adjustment cylinder 8. The upper parts of the two pull rods 7 are slidably connected to the inside of the guide groove 9. A transmission mechanism 10 that cooperates with the adjustment cylinder 8 is movably connected between the top of the transmission rod 3 and the top surface of the reaction tank 1. The transmission mechanism 10 cooperates with the pull rod 7 to carry the filtering and crushing mechanism 6 to move back and forth in stages inside the reaction tank 1. It should be noted that a support bearing is fixedly connected between the bottom of the adjustment cylinder 8 and the top of the reaction tank 1 to ensure that the adjustment cylinder 8 rotates stably on the top of the reaction tank 1, and a magnetic block is fixedly connected to the top of the reaction tank 1 and the outer wall of the adjustment cylinder 8. When the adjustment cylinder 8 stops rotating, the stability of the adjustment cylinder 8 is ensured under the action of the magnetic block.

[0042] In this embodiment, Figures 1 to 12 As shown, the filtering and crushing mechanism 6 includes an L-shaped guide rod 601, which is provided with four L-shaped guide rods 601. The four L-shaped guide rods 601 are fixedly connected to the top of the support ring 5 at equal intervals along the circumference. The upper part of the transmission rod 3 is movably sleeved with an adjustment ring 602 that cooperates with the support ring 5. Arc grooves 603 are provided around the outer ring of the adjustment ring 602. The four arc grooves 603 correspond one-to-one to the four L-shaped guide rods 601. The upper part of the L-shaped guide rod 601 is slidably connected to the inside of the corresponding arc groove 603. The bottom of the adjustment ring 602 is fixedly connected with a damping telescopic rod 604, and the bottom of the damping telescopic rod 604 overlaps the top of the support ring 5. It should be noted that: when the adjustment ring 602 continues to move downward and fits into the top surface of the support ring 5, the arc groove 603 and the L-shaped guide rod 601 cooperate and slide, and the adjustment ring 602 rotates ninety degrees on the top surface of the support ring 5; when the pull rod 7 carries the adjustment ring 602 and the support ring 5 to rise, the damping telescopic rod 604 carries the adjustment ring 602 to move slowly and separate from the fitted support ring 5, so that the filter sleeve 607 on the support ring 5 rises inside the reaction tank 1, and the adjustment ring 602 gradually completes the reset rotation.

[0043] The top of the adjustment ring 602 is movably connected to the bottom of the two pull rods 7. Four arc-shaped push plates 605 are hingedly connected to the upper part of the outer ring of the adjustment ring 602 at equal intervals along the circumference. The outer ring of the support ring 5 is fixedly connected to four connecting plates 614 at equal intervals along the circumference. The four connecting plates 614 correspond to the four sides of the cross-shaped stirring blade 4 one by one. Both sides of the connecting plates 614 are provided with a slide groove 606. It should be noted that: the end of the arc-shaped push plate 605 close to the adjustment ring 602 is rotatably connected to a connecting pin, and the top of the connecting pin is rotatably connected to an arc-shaped pad. The side wall of the arc-shaped pad is fixedly connected to the outer wall of the adjustment ring 602. The arc-shaped pad is provided to prevent interference between the connecting pin and the L-shaped guide rod 601 during the rotation of the adjustment ring 602. The connecting plate is arranged above the cross-shaped stirring blade 4, and the inner bottom surface of the slide groove 606 of the side wall of the connecting plate is provided with a slag discharge hole to prevent the inside of the slide groove 606 from being blocked.

[0044] A filter sleeve 607 is movably connected between two adjacent connecting plates 614, and the side wall of the filter sleeve 607 overlaps the blade position of the cross-shaped stirring blade 4. The opposite sides of the four filter sleeves 607 are fixedly connected with a spring telescopic rod 608, and the four spring telescopic rods 608 correspond to the four arc-shaped push plates 605 one by one. The top of the spring telescopic rod 608 is rotatably connected to the end of the corresponding arc-shaped push plate 605. Grooves 609 are provided on both sides of the filter sleeve 607. The interior of the groove 609 is slidably connected with an arc-shaped slide plate 610, and nine spring pressure rods 611 are equidistantly distributed on the surface of the arc-shaped slide plate 610. The movable ends of the nine spring pressure rods 611 are fixedly connected with a filter plate 612 that matches the groove 609. The side wall of the upper part of the arc-shaped slide plate 610 is fixedly connected with a sliding pin 613, and the sliding pin 613 is slidably connected to the inside of the slide groove 606 of the side wall of the corresponding connecting plate 614. It should be noted that the cross-sections of the slide groove 606 and the slide pin 613 are both set to T-shaped. When the support ring 5 rises on the surface of the transmission rod 3, the slide pin 613 cooperates with the slide groove 606 to carry the filter plate 612 and the filter sleeve 607 to rise synchronously; when the adjustment ring 602 and the support ring 5 are in a separated state, the telescopic distance of the spring telescopic rod 608 is the same as the distance between the bottom of the adjustment ring 602 and the top of the support ring 5. When the support ring 5 moves down to the extreme position with the filter sleeve 607, the spring telescopic rod 608 can contract during the process of the adjustment ring 602 moving toward the top of the support ring 5 to avoid interference.

[0045] In this embodiment, Figures 1 to 12 As shown, the top of the adjustment ring 602 is fixedly connected to a connecting bearing, and the outer ring of the connecting bearing is fixedly connected to the bottom of the two pull rods 7. It should be noted that: through the setting of the connecting bearing, when the adjustment ring 602 rotates with the support ring 5 and the transmission rod 3, it will not rotate with the pull rod 7, thereby avoiding interference.

[0046] In this embodiment, Figures 1 to 12As shown, four inclined guide plates are fixedly connected to the bottom of the four cross-shaped stirring blades at equal intervals along the circumference, and the four inclined guide plates correspond to the four filter sleeves 607 one by one. It should be noted that when the filter sleeve 607 is rising at the side wall position of the cross-shaped stirring blade 4, under the guidance of the inclined guide plates, the large particles of reactants deposited at the bottom of the reaction tank 1 will slide along the inclined guide plates to the position after the filter sleeve 607 is reset. At this time, the reset filter sleeve 607 can squeeze the large-particle reactants, preventing the large particles of reactants from accumulating at the axis position of the cross-shaped stirring blade 4 and being unable to effectively react with sulfuric acid. In addition, the bottom of the filter sleeve 607 can be set to a serrated shape to improve the extrusion and crushing effect.

[0047] In this embodiment, Figures 1 to 12 As shown, the inner wall of the groove 609 is configured as an inclined surface, and the side end of the filter plate 612 is provided with a chamfer that matches the inclined surface. The filter sleeve 607, the curved slide plate 610, and the filter plate 612 are all configured as metal mesh filter materials. It should be noted that the metal mesh is corrosion-resistant. At the same time, when the filter sleeve 607 and the filter plate 612 press the filtered large-particle reactants against the inner wall of the reaction tank 1 and the transmission rod 3 rotates, friction is generated between the reactants and the inner wall of the reaction tank 1, crushing the reactants. At the same time, the crushed reactants scrape off the gypsum on the surface as they pass through the filter sleeve 607 and the filter plate 612, thereby improving the reaction efficiency.

[0048] In this embodiment, Figures 1 to 12 As shown, the transmission mechanism 10 includes a half gear 101, which is fixedly sleeved on the top of the transmission rod 3. The top of the reaction tank 1 is rotatably connected to a circular gear 102, and the side wall of the circular gear 102 is engaged with the side wall of the half gear 101. The top of the reaction tank 1 is rotatably connected to a gear ring 103, and the inner ring of the gear ring 103 is engaged with the side wall of the circular gear 102. The outer ring of the gear ring 103 is fixedly connected to a shifting sleeve 104, and the inner wall of the shifting sleeve 104 is fixedly connected to a compression spring 105. One end of the compression spring 105 is fixedly connected to a shifting block 106, and the lower part of the inner wall of the adjusting cylinder 8 is symmetrically fixedly connected to a stopper 107 that cooperates with the shifting block 106. It should be noted that: the half gear and the circular gear are arranged on the inner ring of the gear ring. When the transmission rod carries the half gear to engage with the circular gear in stages, the circular gear can carry the gear ring to slowly rotate on the top of the reaction tank; a one-way bearing is fixedly connected between the bottom of the gear ring 103 and the top surface of the reaction tank 1, so that the gear ring 103 can only rotate in one direction.

[0049] A reset pin 108 is fixedly connected to the bottom of the shift block 106, and a wedge block 109 that cooperates with the reset pin 108 is fixedly connected to the top of the reaction tank 1. It should be noted that when the gear ring 103 rotates with the shift block 106, the shift block 106 will contact the stopper 107 on the inner wall of the adjustment cylinder 8, causing the adjustment cylinder 8 to rotate accordingly. When the shift block 106 rotates to the position of the wedge block 109, the wedge block 109 slides in cooperation with the reset pin 108, so that the shift block 106 releases the overlap with the adjacent stopper 107, and the adjustment cylinder 8 now rotates 180 degrees along with the gear ring 103.

[0050] In this embodiment, Figures 1 to 12 As shown, the bottom of the shifting sleeve 104 is provided with a strip groove, and the reset pin 108 is slidably connected to the interior of the strip groove. It should be noted that when the shifting sleeve 104, with the shifting block 106 and the reset pin 108, rotates to the position of the wedge block 109, the wedge block 109 and the reset pin 108 slide in conjunction, causing the reset pin 108 to slide along the track of the strip groove with the shifting block 106. At this time, the shifting block 106 is no longer in contact with the stopper 107, causing the adjustment cylinder 8 to stop rotating.

[0051] In this embodiment, Figures 1 to 12 As shown, a slag discharge valve is fixedly connected to the bottom of the reaction tank 1, and a feed valve is fixedly connected to the top of the reaction tank 1.

[0052] The use method and advantages of the present invention: The anhydrous hydrogen fluoride uses a high-efficiency pre-reactor, and the working process is as follows:

[0053] like Figure 1 、 Figure 2 and Figure 3 As shown, when in use, first start the transmission motor 2 to rotate the transmission rod 3 and the cross-shaped stirring blade 4, and then add fluorite powder and sulfuric acid into the interior of the reaction tank 1 to react and produce hydrogen fluoride. During this process, the half gear 101 at the top of the transmission rod 3 will periodically engage with the circular gear 102 for transmission, so that the circular gear 102 and the gear ring 103 slowly rotate on the top of the reaction tank 1. When the shifting sleeve 104 at the outer ring position of the gear ring 103 rotates with the shifting block 106 to the surface of the stopper 107 at the inner ring position of the adjustment cylinder 8, the shifting block 10 6 drives the stopper 107 and the regulating cylinder 8 to rotate synchronously. When the shifting block 106 rotates to the position of the wedge block 109 at the top of the reaction tank 1, the reset pin 108 at the bottom of the shifting block 106 slides with the surface of the wedge block 109, causing the shifting block 106 to translate into the inside of the shifting sleeve 104 and release the contact with the adjacent stopper 107. At this time, the shifting block 106 drives the regulating cylinder 8 to rotate 180 degrees by cooperating with the stopper 107, so that the regulating cylinder 8 can rotate 180 degrees at the top of the reaction tank 1 in stages during the operation of the transmission rod 3.

[0054] When the adjusting cylinder 8 rotates, the two pull rods 7 on the top of the reaction tank 1 will move along the track of the guide groove 9 at the outer ring position of the adjusting cylinder 8. Every time the adjusting cylinder 8 rotates 180 degrees, the guide groove 9 and the pull rod 7 cooperate in the sliding process, so that the pull rod 7 moves back and forth from top to bottom and then from bottom to top on the top of the reaction tank 1;

[0055] When the pull rod 7 moves downward with the movable adjustment ring 602, the adjustment ring 602 will move downward synchronously with the support ring 5 and the four filter sleeves 607, so that the four filter sleeves 607 are respectively inserted between the four blades of the cross-shaped stirring blade 4. When the support ring 5 moves downward to the limit position, the support ring 5 moves downward to the inner bottom surface of the reaction tank 1 with the filter sleeves 607 through the connecting plate 614. At this time, when the pull rod 7 continues to move downward with the adjustment ring 602, the damping telescopic rod 604 begins to compress, and the arc groove 603 on the outer ring of the adjustment ring 602 slides with the L-shaped guide rod 601 fixedly connected to the top of the support ring 5, so that the adjustment ring 602 rotates ninety degrees on the top surface of the support ring 5.

[0056] During the rotation of the adjusting ring 602, the adjusting ring 602 brings the hinged arc-shaped push plate 605 to press the filter sleeve 607 to move, so that the filter sleeve 607 moves toward the inner wall of the reaction tank 1. At this time, the filter plate 612 is restricted by the connecting plate 614. As the filter sleeve 607 moves, it gradually extends from the inside of the filter sleeve 607, so that the filter sleeve 607 and the filter plate 612 cooperate to filter the reactants with large particles inside the reaction tank 1. When the filter sleeve 607 moves to the limit position with the filter plate 612, the spring pressure rod 611 on the surface of the arc-shaped slide plate 610 presses the filter plate 612 toward the inner wall of the reaction tank 1. The filter plate 612 moves in a direction such that the chamfered corners of the side ends of the filter plate 612 match the inclined surface of the inner wall of the groove 609. At this time, the filter plate 612 is flush with the surface of the filter sleeve 607, and the adjustment ring 602 also moves down to the limit position. As the transmission rod 3 and the cross-shaped stirring blade 4 rotate synchronously with each other, the filter plate 612 and the filter sleeve 607 press the filtered large-particle reactants against the inner wall of the reaction tank 1 for friction, so that the reactants can react quickly after being crushed. At the same time, the crushed reactants can scrape off the gypsum on the surface when passing through the filter sleeve 607 and the filter plate 612, further improving the reaction effect.

[0057] When the pull rod 7 is rising with the adjusting ring 602, the adjusting ring 602 is rising synchronously with the support ring 5 and the filter sleeve 607 through the L-shaped guide rod 601. During this process, the damping spring slowly recovers elastically and cooperates with the arc groove 603 through the L-shaped guide rod 601, so that the adjusting ring 602 is reversed on the top of the support ring 5. At this time, the adjusting ring 602 pulls the arc push plate 605 to reset and rotate, so that the filter sleeve 607 and the filter plate 612 are reset and moved. When the pull rod 7 moves down again, the four filter sleeves 607 are unfolded again, and the large-particle reactants are processed in this reciprocating cycle to ensure that the large-particle reactants inside the reaction tank 1 can quickly react with sulfuric acid.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. High-efficiency pre-reactor for anhydrous hydrogen fluoride, comprising: A reaction tank (1), wherein the bottom of the reaction tank (1) is fixedly connected to a transmission motor (2), and the rotating end of the transmission motor (2) passes through the reaction tank (1) and is fixedly connected to a transmission rod (3), the transmission rod (3) is rotatably connected between the top and the bottom of the reaction tank (1), and the lower part of the transmission rod (3) is fixedly sleeved with a cross-shaped stirring blade (4) for mixing, and the side wall of the cross-shaped stirring blade (4) overlaps the inner wall of the reaction tank (1); It is characterized by further comprising: A support ring (5) has an inner ring vertically slidably connected to the surface of the transmission rod (3); a filtering and crushing mechanism (6) is movably connected between the surface of the support ring (5) and the surface of the cross-shaped stirring blade (4); a pull rod (7) is vertically inserted through the top of the reaction tank (1), and two pull rods (7) are provided; the lower parts of the two pull rods (7) are symmetrically movably connected to the top of the filtering and crushing mechanism (6); the movement of the pull rods (7) causes the filtering and crushing mechanism (6) to expand around and crush the filtered reactants; The top of the reaction tank (1) is rotatably connected to an adjusting cylinder (8), and a guide groove (9) is provided on the outer wall of the adjusting cylinder (8). The upper parts of the two pull rods (7) are slidably connected to the inside of the guide groove (9). A transmission mechanism (10) that cooperates with the adjusting cylinder (8) is movably connected between the top of the transmission rod (3) and the top surface of the reaction tank (1). The transmission mechanism (10) cooperates with the pull rod (7) to carry the filtering and crushing mechanism (6) to move back and forth in stages inside the reaction tank (1); The filtering and crushing mechanism (6) includes an L-shaped guide rod (601), wherein the number of the L-shaped guide rods (601) is four, and the four L-shaped guide rods (601) are fixedly connected to the top of the support ring (5) at equal intervals along the circumference. The upper part of the transmission rod (3) is movably sleeved with an adjustment ring (602) that matches the support ring (5). The outer ring of the adjustment ring (602) is provided with arc grooves (603) on all four sides. The four arc grooves (603) correspond to the four L-shaped guide rods (601) one by one. The upper part of the L-shaped guide rod (601) is slidably connected to the inside of the corresponding arc groove (603). The bottom of the adjustment ring (602) is fixedly connected to damping telescopic rods (604) on all four sides, and the bottom of the damping telescopic rods (604) overlaps the top of the support ring (5). The top of the adjusting ring (602) is movably connected to the bottoms of the two pull rods (7); the upper portion of the outer ring of the adjusting ring (602) is hinged with four arc-shaped push plates (605) at equal intervals along the circumference; the outer ring of the supporting ring (5) is fixedly connected with four connecting plates (614) at equal intervals along the circumference; the four connecting plates (614) correspond to the four sides of the cross-shaped stirring blade (4) one by one, and sliding grooves (606) are provided on both sides of the connecting plates (614); A filter sleeve (607) is movably connected between two adjacent connecting plates (614), and the side wall of the filter sleeve (607) overlaps the blade position of the cross-shaped stirring blade (4). The four opposite sides of the filter sleeves (607) are fixedly connected with spring telescopic rods (608), and the four spring telescopic rods (608) correspond to the four arc-shaped push plates (605) one by one. The top of the spring telescopic rod (608) is rotatably connected to the end of the corresponding arc-shaped push plate (605). Both sides of the filter sleeve (607) are A groove (609) is provided, wherein the interior of the groove (609) is slidably connected to an arc-shaped slide plate (610), and nine spring pressure rods (611) are evenly distributed on the surface of the arc-shaped slide plate (610), and a filter plate (612) matching the groove (609) is fixedly connected between the movable ends of the nine spring pressure rods (611), and a sliding pin (613) is fixedly connected to the side wall of the upper part of the arc-shaped slide plate (610), and the sliding pin (613) is slidably connected to the interior of the sliding groove (606) on the side wall of the corresponding connecting plate (614).

2. The high-efficiency pre-reactor for anhydrous hydrogen fluoride according to claim 1, characterized in that: The top of the adjusting ring (602) is fixedly connected to a connecting bearing, and the outer ring of the connecting bearing is fixedly connected to the bottoms of the two pull rods (7).

3. The high-efficiency pre-reactor for anhydrous hydrogen fluoride according to claim 2, characterized in that: Four inclined guide plates are fixedly connected to the bottom of the cross-shaped stirring blade (4) at equal intervals along the circumference, and the four inclined guide plates correspond one to one with the four filter sleeves (607).

4. The high-efficiency pre-reactor for anhydrous hydrogen fluoride according to claim 3, characterized in that: The inner wall of the groove (609) is configured as a slope, and the side end of the filter plate (612) is provided with a chamfer that matches the slope. The filter sleeve (607), the arc-shaped slide plate (610), and the filter plate (612) are all configured as metal mesh filter materials.

5. The high-efficiency pre-reactor for anhydrous hydrogen fluoride according to claim 4, characterized in that: The transmission mechanism (10) includes a half gear (101), the half gear (101) is fixedly sleeved on the top of the transmission rod (3), the top of the reaction tank (1) is rotatably connected to a circular gear (102), the side wall of the circular gear (102) is meshed with the side wall of the half gear (101), the top of the reaction tank (1) is rotatably connected to a gear ring (103), the inner ring of the gear ring (103) is meshed with the side wall of the circular gear (102), and the outer ring of the gear ring (103) is fixedly connected to a shifting sleeve (104), the inner wall of the shifting sleeve (104) is fixedly connected to a compression spring (105), one end of the compression spring (105) is fixedly connected to a shifting block (106), and the lower part of the inner wall of the regulating cylinder (8) is symmetrically fixedly connected to a stopper (107) that cooperates with the shifting block (106); The bottom of the shift block (106) is fixedly connected to a reset pin (108), and the top of the reaction tank (1) is fixedly connected to a wedge block (109) that matches the reset pin (108).

6. The high-efficiency pre-reactor for anhydrous hydrogen fluoride according to claim 5, characterized in that: A strip groove is provided at the bottom of the pull sleeve (104), and the reset pin (108) is slidably connected inside the strip groove.

7. The high-efficiency pre-reactor for anhydrous hydrogen fluoride according to claim 6, characterized in that: The bottom of the reaction tank (1) is fixedly connected to a slag discharge valve, and the top of the reaction tank (1) is fixedly connected to a feed valve.

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