Automatic adjusting device for backpressure plate of gypsum dehydrator

Abstract

The invention discloses an automatic adjusting device for a backpressure plate of a gypsum dehydrator, which belongs to the technical field of sewage treatment and comprises a dehydration body, a flocculation basin, an automatic adjusting mechanism, a taking-out mechanism, a supporting mechanism and a driving mechanism. The automatic adjusting mechanism, the taking-out mechanism, the supporting mechanism and the driving mechanism are all fixedly installed at the same end of the dewatering body, the distance between the back pressure plate and a sludge outlet of the dewatering body can be adjusted through the automatic adjusting mechanism, and spiral rotation of the back pressure plate can be achieved through meshing transmission of a first gear and a second gear; and meanwhile, through limiting between an annular limiting groove and a limiting circular plate and synchronous movement of a matching piece and a movable supporting plate, the first gear and the second gear are always engaged in the re-moving process, and adjustment of the back pressure plate is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to an automatic adjusting device for the back pressure plate of a gypsum dehydrator. Background Art

[0002] The desulfurization sludge of a power plant refers to the solid waste generated when flue gas desulfurization equipment is used to treat sulfur dioxide in the flue gas of a thermal power plant. The main components of the desulfurization sludge are molten sulfur taken from the burned coal, SO generated by incomplete combustion 2 and impurities such as coal ash, as well as calcium oxide, limestone, and gypsum added to the desulfurizer. Its chemical composition is complex, containing both inorganic and organic substances. After being treated by the desulfurization equipment, sulfur dioxide in the flue gas of the power plant is converted into gaseous SO 2 and calcium oxide and gypsum suspended in the flue gas. Among them, inorganic substances such as gypsum and calcium oxide account for the main proportion, usually about 80% of the total weight of the desulfurization sludge. To avoid waste, various components in the desulfurization sludge are comprehensively recovered to achieve the reuse of resources.

[0003] For the gypsum liquid separated from the sludge, we need to dehydrate it. During the dehydration process, a spiral dehydrator is used, and the back pressure plate on it is usually adjusted manually, and the adjustment process is rather inconvenient. Therefore, we propose an automatic adjusting device for the back pressure plate. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an automatic adjusting device for the back pressure plate of a gypsum dehydrator.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] An automatic adjusting device for the back pressure plate of a gypsum dehydrator, comprising a dehydration body, a flocculation tank, an automatic adjusting mechanism, a taking-out mechanism, a supporting mechanism, and a driving mechanism. The flocculation tank is fixedly installed on the dehydration body, and the automatic adjusting mechanism, the taking-out mechanism, the supporting mechanism, and the driving mechanism are all fixedly installed at the same end of the dehydration body;

[0007] The flocculation tank includes a rotatably arranged cylindrical shaft, and a plurality of stirring blades are arranged on the cylindrical shaft, and a cleaning plate is slidably arranged in the stirring blades;

[0008] The automatic adjustment mechanism includes a connecting plate that is slidably arranged. A moving support plate is slidably arranged on the connecting plate. A first synchronous pulley is rotatably arranged on the moving support plate. Fitting members are slidably arranged on both sides of the connecting plate. A second synchronous pulley is rotatably arranged on the fitting member. A first gear and a limiting circular plate are fixed on the second synchronous pulley. The first synchronous pulley and the second synchronous pulleys on both sides are connected by a belt. The automatic adjustment mechanism further includes a threaded column arranged on a spiral shaft, and a back pressure plate assembly. The back pressure plate assembly includes a back pressure plate. A cylindrical barrel is fixed on the back pressure plate. An annular limiting groove and a second gear are fixed on the cylindrical barrel;

[0009] The support mechanism includes a moving long rod that is slidably arranged. A cleaning roller is rotatably arranged on the moving long rod. A driving mechanism is used to drive the spiral shaft to rotate;

[0010] The taking-out mechanism includes two second telescopic cylinders that are slidably arranged. Arc-shaped connecting components are fixed on both of the second telescopic cylinders. U-shaped plates are fixed on the arc-shaped connecting components. Two bending plates are slidably arranged on each U-shaped plate. Two semi-circular clamps are slidably arranged on each of the two bending plates. Semi-gears are fixed on each of the two semi-circular clamps. The two semi-gears are spliced to form a complete fourth gear. An inclined rod is fixed on one of the bending plates. An L-shaped rod is slidably arranged on the arc-shaped connecting component. A third gear is rotatably arranged on the L-shaped rod. The inclined rod is located below the L-shaped rod and contacts it.

[0011] Furthermore, the dehydration body includes two symmetrically arranged dehydration tanks. A spiral shaft is installed in the dehydration tank. On one side of the dehydration body, a flocculation tank is also fixed. The bottom end of the flocculation tank is connected with an infusion pipe. The infusion pipe is of a tee type and is respectively communicated with the two dehydration tanks on the dehydration body.

[0012] Furthermore, a gypsum inlet tank is fixed on the dehydration body beside the flocculation tank. An inlet is provided on the gypsum inlet tank. The gypsum inlet tank is communicated with the flocculation tank. The dehydration body also includes an outlet and a bent pipe. The bent pipe is communicated with the flocculation tank.

[0013] Furthermore, the flocculation tank includes a tank body. A cylindrical shaft is rotatably arranged in the tank body. A sixth motor is connected to the cylindrical shaft. The sixth motor is fixedly connected to the top end of the tank body. A feeding port is also provided on the tank body. A number of stirring blades are symmetrically arranged on both sides of the cylindrical shaft. A cavity is arranged inside each of the number of stirring blades. A first telescopic cylinder is installed in each cavity. The output ends of the first telescopic cylinders are fixedly connected with cleaning plates. The shape of the cleaning plate is rectangular or cylindrical. The sizes of the number of stirring blades are the same, and the distance between two adjacent stirring blades on both sides is equal to the width of the stirring blade.

[0014] Further, the automatic adjustment mechanism further includes a connecting plate, which is fixedly connected to the outer shell of the dehydration body. A first threaded rod is rotatably provided on the connecting plate, and a first limiting rod is fixedly provided. One end of the first threaded rod is connected to a first motor, and the first motor drives the first threaded rod to rotate. A moving member is in threaded cooperation with the first threaded rod and is slidably connected to the first limiting rod. A rectangular groove is formed in the moving member, and a sliding rod is fixedly provided in the rectangular groove. A moving support plate is slidably provided on the sliding rod and slides in the rectangular groove. A first synchronous wheel is rotatably provided on the moving support plate through a connecting shaft. A second motor is fixedly installed on the moving support plate, and the second motor drives the first synchronous wheel to rotate. Long arms are fixedly provided on both sides of the moving member, and the two long arms are symmetrically arranged. Third limiting rods are fixedly provided at the ends of the two long arms. The automatic adjustment mechanism further includes two cooperating members, and waist-shaped grooves are formed in the two cooperating members. The third limiting rods on both sides slide on the waist-shaped grooves respectively. One end of each of the two cooperating members is connected to a second synchronous wheel through a connecting shaft. A first gear is coaxially and fixedly connected to the second synchronous wheel, and a limiting circular plate is coaxially and fixedly connected to the first gear. The second synchronous wheels on both sides are connected to the first synchronous wheel through a belt.

[0015] Further, the automatic adjustment mechanism further includes a thin circular ring piece rotatably provided at the sludge outlet of the dehydration body. Two cylindrical rods are fixedly provided on the thin circular ring piece. One end of the spiral shaft passes through the sludge outlet, and the passing end is fixedly provided with a threaded column. A back pressure plate assembly is in threaded cooperation with the threaded column. The back pressure plate assembly includes a back pressure plate, and a cylindrical barrel is fixedly provided on the back pressure plate. Threads are provided in the cylindrical barrel, and a second gear is further provided on the cylindrical barrel. An annular limiting groove is provided between the back pressure plate and the second gear on the cylindrical barrel. The back pressure plate assembly is connected to the threaded column through the threads on the cylindrical barrel, and one end of the spiral shaft passes through the back pressure plate assembly. The back pressure plate is slidably connected to the two cylindrical rods and can be separated from the cylindrical rods.

[0016] Further, the support mechanism includes two moving grooves formed in the dehydration tank. A moving long rod slides on the two moving grooves. A cleaning roller is rotatably provided on the two moving long rods, and the diameter of the cleaning roller is greater than the minimum pitch of the spiral shaft.

[0017] Further, the driving mechanism includes a mounting bracket, which is fixed on the two dehydration tanks. A connecting box is fixedly bolted on the mounting bracket. A third motor is fixedly connected to the connecting box, and the third motor rotates the spiral shaft through the connecting box. The internal structure of the connecting box includes two meshing bevel gears, and the bevel gears are respectively connected to the third motor and the spiral shaft.

[0018] Further, the taking-out mechanism includes a first installation groove formed in the dehydration body. A second threaded rod is rotatably provided on the first installation groove. A motor is connected to the second threaded rod, and the motor drives the second threaded rod to rotate. A second limiting rod is also fixedly provided on the first installation groove. A waist-shaped rod is in threaded cooperation with the second threaded rod. Second telescopic cylinders are fixedly provided at both ends of the waist-shaped rod. The output ends of the two second telescopic cylinders are fixedly connected with an arc-shaped connecting component. The arc-shaped connecting component is fixedly connected with a U-shaped plate through a first mounting plate. A bidirectional threaded rod is rotatably provided on the U-shaped plate. Bent plates are respectively in threaded cooperation with the two ends of the bidirectional threaded rod. The bent plates are slidably connected to the U-shaped plate. A fourth motor is connected to the bidirectional threaded rod, and the fourth motor is fixedly connected to the U-shaped plate. The bidirectional threaded rod is driven to rotate by the fourth motor. Semi-circular clamps are slidably connected to the two bent plates through limiting bumps. Semi-circular mating grooves are provided on the semi-circular clamps. The two semi-circular mating grooves are respectively in sliding cooperation with the limiting bumps. The limiting bumps can be drawn out of the semi-circular mating grooves. An inclined rod is fixedly provided on one of the bent plates. The inclined rod is Z-shaped. Semi-gears are fixedly provided on the two semi-circular clamps. When the two semi-circular clamps move to the middlemost position, they can be spliced to form a complete ring. The two semi-gears are spliced to form a complete fourth gear. Magnets that attract each other are provided at the splicing position.

[0019] Further, a second installation groove is formed in the first mounting plate. A rectangular block is slidably provided in the second installation groove. A spring is fixedly connected between the bottom end of the rectangular block and the bottom end of the second installation groove. An L-shaped rod is also fixedly provided at the bottom end of the rectangular block. A Z-shaped structure is formed between the rectangular block and the L-shaped rod. A fifth motor is also fixedly provided on the L-shaped rod. The output end of the fifth motor is fixedly connected with a third gear. The bottom end of the L-shaped rod contacts the upper surface of the inclined rod.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. By providing a flocculation tank, the present invention is mainly used for the dosing of flocculants to cause the gypsum liquid to flocculate, facilitating dehydration. A number of stirring blades and cleaning plates are provided in the flocculation tank, enabling the stirring blades and cleaning plates to have basic stirring functions and also cleaning functions. When the cleaning plate extends, it can be in contact with the inner wall of the flocculation tank to clean the residues on the inner wall. The structure is simple and has strong functionality.

[0022] 2. By providing an automatic adjustment mechanism, the present invention can adjust the distance between the back pressure plate and the sludge outlet of the dehydration body. The back pressure plate can be screwed and rotated through the meshing transmission of the first gear and the second gear, enabling the back pressure plate to be screwed in and out on the threaded column, further realizing the position adjustment of the back pressure plate. At the same time, through the limitation between the annular limiting groove and the limiting circular plate, and in cooperation with the synchronous movement of the cooperating part and the moving support plate, the first gear and the second gear are always meshed during the movement, which is beneficial to the adjustment of the back pressure plate.

[0023] 3. The present invention is provided with a taking-out mechanism. The taking-out mechanism is used to rotate and screw out the spiral shaft. During the taking-out process of the spiral shaft, it is clamped by two semi-circular clamps. After the two semi-circular clamps are spliced, they can still rotate, and under the push of the second telescopic cylinder, the spiral shaft is rotated and screwed out, avoiding certain damage to the spiral shaft caused by forced extraction. A cleaning roller is also provided below the mud outlet of the dewatering body, and the cleaning roller can support and clean the spiral shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is the overall structure schematic diagram of the present invention;

[0026] Figure 2 is the internal structure schematic diagram of the flocculation tank of the present invention;

[0027] Figure 3 is the front view of the internal structure of the flocculation tank of the present invention;

[0028] Figure 4 is the schematic diagram of the arrangement of the stirring blades of the present invention;

[0029] Figure 5 is the schematic diagram of a part of the automatic adjustment mechanism of the present invention Figure Ⅰ (including the first gear);

[0030] Figure 6 is the schematic diagram of a part of the automatic adjustment mechanism of the present invention Figure Ⅱ (including the back pressure plate);

[0031] Figure 7 is the enlarged schematic diagram of part A structure of the present invention;

[0032] Figure 8 is the schematic diagram of a part of the taking-out mechanism of the present invention Figure Ⅰ (including the second telescopic cylinder);

[0033] Figure 9 is the schematic diagram of a part of the taking-out mechanism of the present invention Figure Ⅱ (including the semi-circular clamp);

[0034] Figure 10 is the schematic diagram of the structure of the semi-circular clamp of the present invention;

[0035] Figure 11 is the front view of the semi-circular clamp of the present invention.

[0036] 1. Dehydration body; 2. Dehydration tank; 3. Liquid inlet; 4. Infusion tube; 5. Flocculation tank; 6. Bend tube; 7. Gypsum liquid inlet tank; 8. Automatic adjustment mechanism; 9. Screw shaft; 10. Taking-out mechanism; 11. Driving mechanism; 12. Supporting mechanism; 13. Liquid outlet; 501. Tank body; 502. Sixth motor; 503. Feeding port; 504. Cylindrical shaft; 505. Stirring blade; 506. Cleaning plate; 801. Connecting plate; 802. First limiting rod; 803. First threaded rod; 804. First motor; 805. Moving part; 806. Rectangular groove; 807. Slide bar; 808. Moving support plate; 809. Second motor; 810. First synchronous pulley; 811. Long arm; 812. Third limiting rod; 813. Fitting part; 814. Waist-shaped groove; 815. Second synchronous pulley; 816. Belt; 817. First gear; 818. Limiting circular plate; 819. Thin ring plate; 820. Cylindrical rod; 821. Threaded column; 822. Back pressure plate; 823. Second gear; 824. Annular limiting groove; 825. Cylindrical barrel; 1001. First installation groove; 1002. Second threaded rod; 1003. Second limiting rod; 1004. Waist-shaped rod; 1005. Second telescopic cylinder; 1006. Arc connection component; 1007. U-shaped plate; 1008. First installation plate; 1009. Bidirectional threaded rod; 1010. Fourth motor; 1011. Bend plate; 1012. Semi-circular clamp; 1013. Semi-annular fitting groove; 1014. Semi-gear; 1015. Limiting convex block; 1016. Inclined rod; 1017. L-shaped rod; 1018. Rectangular block; 1019. Spring; 1020. Second installation groove; 1021. Fifth motor; 1022. Third gear; 1101. Installation bracket; 1102. Connection box; 1103. Third motor; 1104. Bolt; 1201. Moving groove; 1202. Cleaning roller; 1203. Moving long rod. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] As Figure 1As shown in the figure, an automatic adjusting device for the back pressure plate of a gypsum dehydrator includes a dehydration body 1. The dehydration body 1 includes two symmetrically arranged dehydration tanks 2. A spiral shaft 9 is installed in the dehydration tank 2. On one side of the dehydration body 1, a flocculation tank 5 is fixedly provided. The bottom end of the flocculation tank 5 is connected to an infusion pipe 4. The infusion pipe 4 is of a three-way type and is respectively communicated with the two dehydration tanks 2 on the dehydration body 1, for conveying the flocculating liquid in the flocculation tank 5 to the internal cavities of the two dehydration tanks 2, facilitating dehydration by the dehydration body 1.

[0039] The dehydration body 1 is specifically a spiral dehydrator. Its principle is to extract the processed gypsum liquid from the flocculation tank 5 into the two dehydration tanks 2. The dehydration body 1 is mainly composed of static and dynamic ring plates (not shown in the figure) and a spiral shaft 9. As the gypsum liquid moves in the dehydration tank 2, clear water leaks out through the clear water filter seam, and the dehydrated gypsum spins out from the mud outlet (the principle of the spiral dehydrator is a common existing technology and will not be elaborated too much in the specification).

[0040] On the dehydration body 1, a gypsum liquid inlet tank 7 is also fixedly provided beside the flocculation tank 5. The gypsum liquid inlet tank 7 is provided with a liquid inlet 3. The gypsum liquid inlet tank 7 is communicated with the flocculation tank 5. The recycled gypsum liquid enters the flocculation tank 5 through the gypsum liquid inlet tank 7 for further treatment, such as Figure 2 As shown in the figure, the dehydration body 1 also includes a liquid outlet 13 and a bent pipe 6. The bent pipe 6 is communicated with the flocculation tank 5. The clear water filtered out on the dehydration body 1 flows out through the liquid outlet 13 or the bent pipe 6. The bent pipe 6 can convey the filtered clear water back to the flocculation tank 5 for treatment again.

[0041] As Figure 2 and Figure 3 As shown in the figure, the flocculation tank 5 includes a tank body 501. A cylindrical shaft 504 is rotatably provided in the tank body 501. A sixth motor 502 is connected to the cylindrical shaft 504. The sixth motor 502 is fixedly connected to the top end of the tank body 501. A feeding port 503 is also provided on the tank body 501. The feeding port 503 is used to add drugs to cause the gypsum liquid in the tank body 501 to flocculate. A number of stirring blades 505 are symmetrically provided on both sides of the cylindrical shaft 504. A cavity is provided inside each of the number of stirring blades 505. A first telescopic cylinder is installed in each cavity. The output ends of the first telescopic cylinders are fixedly connected to a cleaning plate 506. The shape of the cleaning plate 506 can be rectangular or cylindrical. The cleaning plate 506 can also be a cleaning brush for scrubbing the inner wall. By changing the position of the cleaning plate 506 through the first telescopic cylinder, the cleaning plate 506 can be attached to the inner wall of the flocculation tank 5. When the cylindrical shaft 504 drives the cleaning plate 506 to rotate, the substances adsorbed on the inner wall of the flocculation tank 5 can be scraped off to ensure the cleanliness of the inner wall of the flocculation tank 5 and avoid excessive impurities accumulating on the inner wall of the flocculation tank 5, such as Figure 4As shown, the sizes of several stirring blades 505 are the same, and the distance between two adjacent stirring blades 505 on both sides is equal to the width of the stirring blade 505. The purpose is that when all the stirring blades 505 are in contact with the inner wall of the flocculation tank 5, the inner wall of the flocculation tank 5 can be basically covered, making the cleaning of the inner wall more thorough.

[0042] As Figure 1 shown, an automatic adjustment mechanism 8, a taking-out mechanism 10, a supporting mechanism 12 and a driving mechanism 11 are also provided at the sludge outlets of the two dewatering tanks 2 on the dewatering body 1.

[0043] As Figure 5 and Figure 7 shown, the automatic adjustment mechanism 8 includes a connecting plate 801 which is fixedly connected to the outer shell of the dewatering body 1. A first threaded rod 803 is rotatably provided on the connecting plate 801, and a first limiting rod 802 is fixedly provided. One end of the first threaded rod 803 is connected to a first motor 804 which drives the first threaded rod 803 to rotate. A moving part 805 is in threaded cooperation with the first threaded rod 803 and is slidably connected to the first limiting rod 802. A rectangular groove 806 is formed in the moving part 805, and a sliding rod 807 is fixedly provided in the rectangular groove 806. A moving support plate 808 is slidably provided on the sliding rod 807 and can slide in the rectangular groove 806. A first synchronous wheel 810 is rotatably provided on the moving support plate 808 through a connecting shaft, and a second motor 809 is fixedly installed on the moving support plate 808 which drives the first synchronous wheel 810 to rotate. Long arms 811 are fixedly provided on both sides of the moving part 805, and the two long arms 811 are symmetrically arranged. Third limiting rods 812 are fixedly provided at the ends of the two long arms 811. The automatic adjustment mechanism 8 also includes two cooperating parts 813, and waist-shaped grooves 814 are formed in the two cooperating parts 813. The third limiting rods 812 on both sides slide on the waist-shaped grooves 814 respectively. As Figure 7 shown, one ends of the two cooperating parts 813 are respectively connected with second synchronous wheels 815 through connecting shafts. A first gear 817 is coaxially and fixedly connected to the second synchronous wheel 815, and a limiting circular plate 818 is coaxially and fixedly connected to the first gear 817. The second synchronous wheels 815 on both sides are connected with the first synchronous wheel 810 through a belt 816. During use, the second motor 809 drives the first synchronous wheel 810 to rotate, and the first synchronous wheel 810 realizes the synchronous rotation of the second synchronous wheels 815 on both sides through the belt 816. At the same time, the first gears 817 on both sides will also rotate coaxially with the second synchronous wheels 815 respectively.

[0044] As Figure 6As shown, the automatic adjustment mechanism 8 further includes a thin circular ring plate 819 rotatably disposed at the mud outlet. Two cylindrical rods 820 are fixedly provided on the thin circular ring plate 819. One end of the spiral shaft 9 passes through the mud outlet, and a threaded column 821 is fixedly provided at the passing end. A back pressure plate assembly is in threaded engagement with the threaded column 821. The back pressure plate assembly includes a back pressure plate 822. A cylindrical barrel 825 is fixedly provided on the back pressure plate 822. The cylindrical barrel 825 has internal threads. A second gear 823 is further provided on the cylindrical barrel 825. An annular limiting groove 824 is provided on the cylindrical barrel 825 between the back pressure plate 822 and the second gear 823. The back pressure plate assembly is connected to the threaded column 821 through the threads on the cylindrical barrel 825, and one end of the spiral shaft 9 can pass through the back pressure plate assembly. The back pressure plate 822 is slidably connected to the two cylindrical rods 820, and the back pressure plate 822 can be separated from the cylindrical rods 820.

[0045] During use, the back pressure plate assembly is threadedly connected to the threaded column 821 of the spiral shaft 9. Then, the first motor 804 is used to drive the first threaded rod 803 to rotate, so as to realize the up and down movement of the moving member 805, so that the first gears 817 on both sides are engaged with the two second gears 823. At the same time, the two limiting circular plates 818 move into the annular limiting groove 824. At this time, the first synchronous wheel 810 is driven to rotate, and the first synchronous wheel 810 drives the two second synchronous wheels 815 to rotate, further realizing the rotation of the two first gears 817. The two first gears 817 are respectively engaged with the second gears 823, realizing the meshing transmission of the two second gears 823, and further the overall rotation of the back pressure plate assembly. The back pressure plate 822 moves on the threaded column 821, so that the distance between the back pressure plate 822 and the mud outlet of the dehydration body 1 is changed. In this embodiment, the limiting circular plate 818 is engaged with the annular limiting groove 824. When the second gear 823 drives the first gear 817 to rotate, the first gear 817 can move synchronously with the second gear 823 under the action of the limiting circular plate 818. The synchronization of the two second gears 823 enables the third limiting rod 812 to slide in the kidney-shaped groove 814. At the same time, the first synchronous wheel 810 can also move in the rectangular groove 806, so that the two first gears 817 can always be in engagement with the two second gears 823, realizing the position adjustment of the back pressure plate 822, changing the distance between the back pressure plate 822 and the mud outlet. The back pressure plate 822 provides internal pressure to help squeeze out moisture and improve the solid content of the gypsum mud cake.

[0046] As Figure 6 As shown, the support mechanism 12 includes two moving grooves 1201 formed on the dehydration tank 2. A moving long rod 1203 is slidably provided on the two moving grooves 1201. A cleaning roller 1202 is rotatably provided on the two moving long rods 1203. The diameter of the cleaning roller 1202 is larger than the minimum pitch of the spiral shaft 9, so as to prevent the cleaning roller 1202 from getting stuck in the spiral of the spiral shaft 9 and causing damage to the equipment.

[0047] AsFigure 6 As shown, the driving mechanism 11 includes a mounting bracket 1101, which is fixed on two dehydration tanks 2. A connection box 1102 is fixed on the mounting bracket 1101 by bolts 1104. A third motor 1103 is fixedly connected to the connection box 1102. The third motor 1103 rotates the screw shaft 9 through the connection box 1102 to further realize the dehydration function. The purpose of the connection box 1102 is to connect the third motor 1103 and the screw shaft 9, so that the third motor 1103 drives the screw shaft 9 to rotate. Its internal structure includes but is not limited to two meshing bevel gears, which are respectively connected to the third motor 1103 and the screw shaft 9 to realize the rotation of the screw shaft 9.

[0048] As Figure 8 shown, the taking-out mechanism 10 includes a first installation groove 1001 opened on the dehydration body 1. A second threaded rod 1002 is rotatably arranged on the first installation groove 1001. A motor is connected to the second threaded rod 1002, and the motor drives the second threaded rod 1002 to rotate. A second limiting rod 1003 is also fixedly arranged on the first installation groove 1001. A waist-shaped rod 1004 is in threaded cooperation with the second threaded rod 1002. Second telescopic cylinders 1005 are fixedly arranged at both ends of the waist-shaped rod 1004. The output ends of the two second telescopic cylinders 1005 are fixedly connected to an arc-shaped connection assembly 1006. As Figure 9 shown, an L-shaped plate 1007 is fixedly connected to the arc-shaped connection assembly 1006 through a first mounting plate 1008. A bidirectional threaded rod 1009 is rotatably arranged on the L-shaped plate 1007. Bent plates 1011 are respectively in threaded cooperation with both ends of the bidirectional threaded rod 1009. The bent plates 1011 are slidably connected to the L-shaped plate 1007. A fourth motor 1010 is connected to the bidirectional threaded rod 1009, and the fourth motor 1010 is fixedly connected to the L-shaped plate 1007. By driving the bidirectional threaded rod 1009 to rotate through the fourth motor 1010, the movement of the two bent plates 1011 is further realized. Semi-circular clamps 1012 are slidably connected to the two bent plates 1011 through limit bumps 1015. Semi-circular mating grooves 1013 are arranged on the semi-circular clamps 1012. The two semi-circular mating grooves 1013 are respectively in sliding cooperation with the limit bumps 1015. The limit bumps 1015 can slide out of the semi-circular mating grooves 1013, and there is a certain frictional resistance between the limit bumps 1015 and the semi-circular mating grooves 1013. Without external force, the limit bumps 1015 and the semi-circular mating grooves 1013 will not slide relative to each other. An inclined rod 1016 is fixedly arranged on one of the bent plates 1011. The inclined rod 1016 is Z-shaped. Semi-gears 1014 are fixedly arranged on the two semi-circular clamps 1012. When the two semi-circular clamps 1012 move to the middlemost position, they can be spliced to form a complete ring. The two semi-gears 1014 are spliced to form a complete fourth gear. Magnets that attract each other are arranged at the splicing position to make the splicing more firm.

[0049] As Figure 8 and Figure 10 shown, a second installation groove 1020 is formed in the first installation plate 1008. A rectangular block 1018 is slidably arranged in the second installation groove 1020. A spring 1019 is fixedly connected between the rectangular block 1018 and the bottom end of the second installation groove 1020. An L-shaped rod 1017 is also fixedly arranged at the bottom end of the rectangular block 1018. A Z-shaped structure is formed between the rectangular block 1018 and the L-shaped rod 1017. A fifth motor 1021 is also fixedly arranged on the L-shaped rod 1017. The output end of the fifth motor 1021 is fixedly connected with a third gear 1022. As Figure 10 and Figure 11 shown, the bottom end of the L-shaped rod 1017 contacts the upper surface of the inclined rod 1016.

[0050] The extraction mechanism 10 is used to extract the spiral shaft 9. During use, the arc-shaped connection assembly 1006 is moved upward through the second threaded rod 1002. The semi-circular clamp 1012 on the arc-shaped connection assembly 1006 rises to both sides of the spiral shaft 9. The bidirectional threaded rod 1009 is driven to rotate by the fourth motor 1010. The two semi-circular clamps 1012 move towards the middle and clamp one end of the spiral shaft 9 from both sides. Elastic sponge or silica gel gasket can be arranged on the inner wall of the semi-circular clamp 1012. When the two semi-circular clamps 1012 are spliced into a complete ring, it can ensure that the spiral shaft 9 is clamped tightly. At the same time, the elastic sponge or silica gel gasket can increase friction and further prevent sliding. When the semi-circular clamp 1012 moves towards the middle, the inclined rod 1016 also moves towards the middle. During the movement, its inclined surface contacts the L-shaped rod 1017 and gradually lifts the L-shaped rod 1017 upward. The rectangular block 1018 drives the third gear 1022 to move upward synchronously. Finally, the third gear 1022 is spliced with the two semi-gears 1014 to form a fourth gear in mesh. The rotation of the third gear 1022 realizes the sliding of the fourth gear on the semi-circular fitting groove 1013. The telescopic movement of the second telescopic cylinder 1005 can realize the semi-circular clamp 1012 clamping the spiral shaft 9 and moving outward. Finally, the rotation and extraction of the spiral shaft 9 are realized, avoiding damage to the spiral shaft 9 during the extraction process. In this embodiment, the spiral shaft 9 and the second telescopic cylinder 1005 are inclinedly installed, and the telescopic direction of the second telescopic cylinder 1005 is consistent with the installation angle of the spiral shaft 9, which is convenient for obliquely extracting the spiral shaft 9 upward.

[0051] During the extraction of the spiral shaft 9, the cleaning roller 1202 moves to the mud outlet of the dewatering body 1 and just contacts the spiral shaft 9. Its purpose is to play a certain supporting role for the spiral shaft 9. At the same time, the rotation of the spiral shaft 9 can also clean the spiral blades inside the spiral shaft 9. The moving long rod 1203 on the cleaning roller 1202 can be fixed by screws to avoid sliding during the extraction of the spiral shaft 9.

[0052] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0053] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed.

Claims

1. An automatic adjustment device for a back pressure plate of a gypsum dehydrator, characterized in that: The dewatering device comprises a dewatering body (1), a flocculation tank (5), an automatic adjustment mechanism (8), a removal mechanism (10), a support mechanism (12) and a driving mechanism (11), wherein the flocculation tank (5) is fixedly mounted on the dewatering body (1), and the automatic adjustment mechanism (8), the removal mechanism (10), the support mechanism (12) and the driving mechanism (11) are all fixedly mounted on the same end of the dewatering body (1); The flocculation tank (5) comprises a rotatable cylindrical shaft (504), a plurality of stirring blades (505) are arranged on the cylindrical shaft (504), and a cleaning plate (506) is slidably arranged inside the stirring blades (505); The automatic adjustment mechanism (8) comprises a slidably provided connection plate (801), a movable support plate (808) is slidably provided on the connection plate (801), a first synchronous wheel (810) is rotatably provided on the movable support plate (808), a matching piece (813) is slidably provided on both sides of the connection plate (801), a second synchronous wheel (815) is rotatably provided on the matching piece (813), a first gear (817) and a limiting circular plate (818) are fixedly provided on the second synchronous wheel (815), the first synchronous wheel (810) and the second synchronous wheels (815) on both sides are connected by a belt (816), the automatic adjustment mechanism (88) further comprises a threaded column (821) provided on the screw shaft (9), and a back pressure plate assembly, the back pressure plate assembly comprises a back pressure plate (822), a cylindrical barrel (825) is fixedly provided on the back pressure plate (822), and an annular limiting groove (824) and a second gear (823) are fixedly provided on the cylindrical barrel (825); The supporting mechanism (12) comprises a sliding movable long rod (1203), a cleaning roller (1202) is rotatably provided on the movable long rod (1203), and the driving mechanism (11) is used for driving the spiral shaft (9) to rotate; The taking-out mechanism (10) comprises two second telescopic cylinders (1005) which are slidably provided, an arc-shaped connecting assembly (1006) is fixedly provided on each of the second telescopic cylinders (1005), a U-shaped plate (1007) is fixedly provided on each of the arc-shaped connecting assemblies (1006), two bending plates (1011) are slidably provided on each of the U-shaped plates (1007), a semicircular clamp (1012) is slidably provided on each of the two bending plates (1011), a half gear (1014) is fixedly provided on each of the two semicircular clamps (1012), and a complete fourth gear is formed by splicing the two half gears (1014), a tilting rod (1016) is fixedly provided on one of the bending plates (1011), an L-shaped rod (1017) is slidably provided on the arc-shaped connecting assembly (1006), a third gear (1022) is rotatably provided on the L-shaped rod (1017), and the tilting rod (1016) is located below the L-shaped rod (1017) and contacts the L-shaped rod (1017).

2. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 1, characterized in that: The dehydration body (1) comprises two symmetrically arranged dehydration boxes (2), a spiral shaft (9) is installed in the dehydration box (2), a flocculation tank (5) is fixedly provided on one side of the dehydration body (1), the bottom end of the flocculation tank (5) is connected to a liquid infusion pipe (4), and the liquid infusion pipe (4) is a three-way type and is respectively connected to the two dehydration boxes (2) on the dehydration body (1).

3. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 2, characterized in that: A gypsum liquid inlet box (7) is fixedly provided on the dehydration body (1) next to the flocculation tank (5), the gypsum liquid inlet box (7) is provided with a liquid inlet (3), the gypsum liquid inlet box (7) is connected to the flocculation tank (5), and the dehydration body (1) also includes a liquid outlet (13) and a bending pipe (6), and the bending pipe (6) is connected to the flocculation tank (5).

4. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 3, characterized in that: The flocculation tank (5) comprises a tank body (501), a cylindrical shaft (504) is rotatably arranged in the tank body (501), a sixth motor (502) is connected to the cylindrical shaft (504), the sixth motor (502) is fixedly connected to the top of the tank body (501), a feeding port (503) is also provided on the tank body (501), a plurality of stirring blades (505) are symmetrically arranged on both sides of the cylindrical shaft (504), a cavity is arranged inside each of the stirring blades (505), a first telescopic cylinder is installed in each cavity, a cleaning plate (506) is fixedly connected to the output end of the first telescopic cylinder, the cleaning plate (506) is in the shape of a rectangle or a cylinder, the plurality of stirring blades (505) are of the same size, and the spacing between adjacent stirring blades (505) on both sides is equal to the width of the stirring blade (505).

5. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 1, characterized in that: The automatic adjustment mechanism (8) further comprises a connecting plate (801), the connecting plate (801) being fixedly connected to the outer shell of the dehydration body (1), a first threaded rod (803) being rotatably provided on the connecting plate (801), a first stop rod (802) being fixedly provided thereon, one end of the first threaded rod (803) being connected to a first motor (804), the first motor (804) driving the first threaded rod (803) to rotate, a moving member (805) being threadedly matched on the first threaded rod (803), the moving member (805) being slidably connected to the first stop rod (802), a rectangular groove (806) being provided on the moving member (805), a sliding rod (807) being fixedly provided in the rectangular groove (806), a moving support plate (808) being slidably provided on the sliding rod (807), the moving support plate (808) sliding in the rectangular groove (806), a first synchronous wheel (810) being rotatably provided on the moving support plate (808) via a connecting shaft, the moving support plate (808) 08) is fixedly mounted with a second motor (809), the second motor (809) drives the first synchronous wheel (810) to rotate, long arms (811) are fixedly mounted on both sides of the moving member (805), the two long arms (811) are symmetrically arranged, and the ends of the two long arms (811) are fixedly mounted with a third limit rod (812), and the automatic adjustment mechanism (8) also includes two matching members (813), and the two matching members (813) are both provided with a waist-shaped groove (814) The third limiting rods (812) on both sides slide on the waist-shaped grooves (814) respectively, one end of the two matching parts (813) is connected to the second synchronous wheel (815) through a connecting shaft, the second synchronous wheel (815) is coaxially and fixedly connected to the first gear (817), the first gear (817) is coaxially and fixedly connected to the limiting circular plate (818), and the second synchronous wheels (815) on both sides are connected to the first synchronous wheel (810) through a belt (816).

6. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 5, characterized in that: The automatic adjustment mechanism (8) also includes a thin annular plate (819) rotatably arranged at the mud outlet of the dewatering body (1), two cylindrical rods (820) being fixedly arranged on the thin annular plate (819), one end of the spiral shaft (9) passing through the mud outlet, and a threaded column (821) being fixedly arranged at the passing end, a back pressure plate assembly being threadedly matched on the threaded column (821), the back pressure plate assembly including a back pressure plate (822), a cylindrical barrel (825) being fixedly arranged on the back pressure plate (822), and a cylindrical barrel (825) being arranged inside the cylindrical barrel (825). The cylindrical tube (825) is provided with a second gear (823), and an annular limit groove (824) is provided on the cylindrical tube (825) between the back pressure plate (822) and the second gear (823). The back pressure plate assembly is connected to the threaded column (821) through the thread on the cylindrical tube (825), and one end of the spiral shaft (9) passes through the back pressure plate assembly. The back pressure plate (822) is slidably connected to the two cylindrical rods (820), and the back pressure plate (822) can be separated from the cylindrical rods (820).

7. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 1, characterized in that: The support mechanism (12) comprises two movable grooves (1201) opened on the dehydration box (2), movable long rods (1203) are slidably arranged on the two movable grooves (1201), and cleaning rollers (1202) are rotatably arranged on the two movable long rods (1203), and the diameter of the cleaning rollers (1202) is greater than the minimum pitch of the spiral shaft (9).

8. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 1, characterized in that: The driving mechanism (11) comprises a mounting bracket (1101), the mounting bracket (1101) being fixed on two dehydration boxes (2), a connecting box (1102) being fixed on the mounting bracket (1101) via bolts (1104), a third motor (1103) being fixedly connected to the connecting box (1102), the third motor (1103) realizing the rotation of the screw shaft (9) via the connecting box (1102), and the internal structure of the connecting box (1102) comprising two mutually meshing bevel gears, the bevel gears respectively connecting the third motor (1103) and the screw shaft (9).

9. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 1, characterized in that: The taking-out mechanism (10) comprises a first mounting groove (1001) provided on the dehydration body (1), a second threaded rod (1002) being rotatably provided on the first mounting groove (1001), a motor being connected to the second threaded rod (1002), the motor driving the second threaded rod (1002) to rotate, a second limiting rod (1003) being fixedly provided on the first mounting groove (1001), a waist-shaped rod (1004) being threadedly matched on the second threaded rod (1002), and a waist-shaped rod (1004) being fixedly provided at both ends. The output ends of the two second telescopic cylinders (1005) are fixedly connected with an arc-shaped connection assembly (1006), and the arc-shaped connection assembly (1006) is fixedly connected with a U-shaped plate (1007) via a first mounting plate (1008). A bidirectional threaded rod (1009) is rotatably provided on the U-shaped plate (1007), and the threads at both ends of the bidirectional threaded rod (1009) are respectively matched with a bending plate (1011), and the bending plate (1011) is slidably connected to the U-shaped plate (1007), and the bidirectional threaded rod (1009) is rotatably connected to the U-shaped plate (1007). The rod (1009) is connected to a fourth motor (1010), the fourth motor (1010) is fixedly connected to the U-shaped plate (1007), the bidirectional threaded rod (1009) is driven to rotate by the fourth motor (1010), the two bending plates (1011) are slidably connected to a semicircular clamp (1012) through a limiting protrusion (1015), the semicircular clamp (1012) is provided with a semi-annular matching groove (1013), the two semi-annular matching grooves (1013) are respectively slidably connected to the limiting protrusion (1015), and the semicircular matching grooves (1013) are respectively slidably connected to the limiting protrusion (1015). The limiting protrusion (1015) can be moved out of the semi-annular matching groove (1013), and a tilting rod (1016) is fixedly provided on one of the bent plates (1011), and the tilting rod (1016) is Z-shaped. Half gears (1014) are fixedly provided on the two semi-circular clamps (1012). When the two semi-circular clamps (1012) are moved to the middle position, they can be spliced ​​to form a complete ring. The two half gears (1014) are spliced ​​to form a complete fourth gear, and magnets that attract each other are provided at the splicing position.

10. The automatic adjustment device for the back pressure plate of a gypsum dehydrator according to claim 9, characterized in that: The first mounting plate (1008) is provided with a second mounting groove (1020), a rectangular block (1018) is slidably provided in the second mounting groove (1020), a spring (1019) is fixedly connected between the rectangular block (1018) and the bottom end of the second mounting groove (1020), an L-shaped rod (1017) is also fixedly provided at the bottom end of the rectangular block (1018), a Z-shaped structure is formed between the rectangular block (1018) and the L-shaped rod (1017), a fifth motor (1021) is also fixedly provided on the L-shaped rod (1017), an output end of the fifth motor (1021) is fixedly connected to a third gear (1022), and the bottom end of the L-shaped rod (1017) contacts the upper surface of the tilting rod (1016).

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