A spray dryer for centrifugal granulation of piezoelectric ceramics and a drying method thereof

Abstract

The invention discloses a piezoelectric ceramic centrifugal granulation spray dryer and a drying method thereof, and relates to the technical field of dryers. The invention comprises a conical tank, a support frame is fixed at the bottom of the outer wall of the conical tank, a driving module is fixedly installed on the bottom surface of the conical tank, a rotating rod is fixed on the top surface of the rotating shaft of the driving module, a stirring fan is fixed at the bottom of the outer wall of the rotating rod, a spraying module is fixed on the top surface of the rotating rod, a feeding module is fixed on the top surface of the conical tank, a heating module is fixedly installed on the top of the inner wall of the conical tank, and a threaded rod is fixed on the top of the outer wall of the rotating rod. In the invention, solidified piezoelectric ceramic raw materials are accumulated on an elastic filter screen, and the high temperature in the conical tank continuously dries the solidified piezoelectric ceramic raw materials, thereby avoiding the problem of poor curing effect caused by incomplete drying of the piezoelectric ceramic raw materials by the spray dryer when curing the piezoelectric ceramic raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of dryers, in particular to a spray dryer for centrifugal granulation of piezoelectric ceramics and a drying method thereof. Background Art

[0002] The piezoelectric ceramic centrifugal granulation spray dryer is a device specially used for preparing piezoelectric ceramic particles. The liquid or paste raw materials are sprayed into tiny droplets through a sprayer, and then the particles are quickly dried into powder or granular materials using thermal energy. The piezoelectric ceramic centrifugal granulation spray dryer has the advantages of fast drying speed, simple operation, good product quality, etc., which improves the product quality and production efficiency.

[0003] Patent No. CN207628361U discloses a boiling granulation dryer, including: a cylinder, a fluidized bed, a heater, a heat-transmitting plate, a gland, a connecting column, a filter plate, a fixed block, a cylinder, an air outlet pipe, a feed port, an air pump, an air inlet pipe, a branch pipe, an adhesive pump, a liquid inlet pipe, an atomizing nozzle, a material box, a hopper, a discharge pipe, and a centrifugal fan. The upper end surface of the cylinder is provided with an opening, the gland is embedded in the opening, and the lower end surface of the gland is connected to the filter plate through a connecting column. The cylinder piston rod passes through the fixed block upward and the end is fixedly connected to the pressure cover. The feed port is fixedly connected to the outer peripheral surface of the cylinder on the lower side of the outlet pipe. The air pump is connected to the fluidized bed through the air inlet pipe. A branch pipe is provided on the air inlet pipe, and the other end of the branch pipe extends into the cylinder. The adhesive pump is connected to the cylinder through a liquid inlet pipe, and the other end of the liquid inlet pipe is fixedly connected to the atomizing nozzle. The material box is arranged on the right side of the fluidized bed, and the fluidized bed is connected to the material box through the discharge pipe. The centrifugal fan is installed on the right end surface of the material box.

[0004] However, the current boiling granulation dryer has the following problems: when the boiling granulation dryer is in use, since there is still a certain amount of moisture in the raw materials during the curing process, it is easy to cause incomplete drying of the raw materials, which leads to the problem that the spray dryer does not dry the piezoelectric ceramic raw materials thoroughly when curing them, resulting in poor curing effect. Therefore, a spray dryer for piezoelectric ceramic centrifugal granulation and a drying method thereof are proposed. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a piezoelectric ceramic centrifugal granulation spray dryer, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a piezoelectric ceramic centrifugal granulation spray dryer, comprising a conical tank, a support frame is fixed to the bottom of the outer wall of the conical tank, a driving module is fixedly installed on the bottom surface of the conical tank, a rotating rod is fixed to the top surface of the driving module rotating shaft, a stirring fan is fixed to the bottom of the outer wall of the rotating rod, a spraying module is fixed to the top surface of the rotating rod, a feeding module is fixed to the top surface of the conical tank, the feeding module is located at the top of the inner wall of the spraying module, a heating module is fixed to the top of the inner wall of the conical tank, a threaded rod is fixed to the top of the outer wall of the rotating rod, U-shaped slide grooves are fixed on the left and right sides of the inner wall of the conical tank, a convex ring is rotatably installed on the top of the outer wall of the threaded rod, and the inner wall of the convex ring The threaded teeth are meshed with the threaded teeth of the threaded rod, an elastic filter is fixed in the middle of the outer wall of the convex ring, a ring frame is fixed on the outer wall of the elastic filter, two slide grooves are provided on both sides of the top surface of the ring frame, the slide grooves of the ring frame are located on the inner wall and outer wall of the U-shaped slide groove, a drying device is provided on the top of the outer wall of the convex ring, and an anti-bow device is provided on the bottom of the outer wall of the drying device. The solidified piezoelectric ceramic raw material that falls downward is accumulated on the elastic filter, and the high temperature in the conical tank continuously dries the solidified piezoelectric ceramic raw material. The elastic filter moves back and forth up and down to screen out the solidified piezoelectric ceramic raw material downward, so that the solidified piezoelectric ceramic raw material can stay in the conical tank for a period of time, so that the solidified piezoelectric ceramic raw material can be thoroughly dried.

[0007] According to the above technical solution, a discharge port is provided at the bottom of the left side of the conical tank, the support frame includes a support ring and a support foot, the support ring is fixed to the bottom of the outer wall of the conical tank, the support feet are respectively fixed to the four sides of the bottom surface of the support ring, the driving module includes a protective shell and a servo motor, the protective shell is fixedly installed on the bottom surface of the conical tank, the servo motor is fixedly installed at the bottom end inside the protective shell, the rotating shaft of the servo motor passes through and is rotatably installed in the middle of the bottom surface of the conical tank, the spraying module includes a round box and an electric spray nozzle, the round box is fixedly installed on the top surface of the rotating rod, the top surface of the round box is provided with a round opening, the electric spray nozzles are respectively passed through and fixed in the middle of the outer wall of the round box, the The feeding module includes a round cover, an inverted convex tube and a fork-shaped air guide tube, the round cover is fixedly installed on the top surface of the conical tank, the inverted convex tube passes through and is fixedly installed in the middle of the top surface of the round cover, the fork-shaped air guide tube passes through and is fixed on both sides of the top surface of the round cover, the inner wall of the round box of the spraying module is located on the top surface of the outer wall of the inverted convex tube of the feeding module, the heating module includes an annular heat-conducting shell, a resistance heater and a coiled pipe, the annular heat-conducting shell is fixed on the top of the inner wall of the conical tank, the resistance heater is fixedly installed on the right side of the outer wall of the conical tank, the coiled pipe is fixedly installed on the left side of the resistance heater, the coiled pipe passes through and is fixed on the right side of the outer wall of the conical tank, and the coiled pipe is arranged in the middle of the annular heat-conducting shell.

[0008] According to the above technical solution, a number of protrusions are fixed on the opposite surfaces of the inner wall of the U-shaped slide, and ring head blocks are fixed on both sides of the top surface of the ring frame. The inner wall of the ring head block is hinged with a square rod, and a torsion spring is arranged between the square rod and the inner wall of the ring head block. The square rod is arranged in an inverted eight-shaped shape, and a cylinder is fixed on the opposite surface of the square rod. The cylinder is arranged above the elastic filter, and the protrusions are all on the movement trajectory of the square rod. In the process of the square rod rotating downward, the elastic filter is reciprocated to form a depression, so that the solidified piezoelectric ceramic raw materials on the elastic filter are reciprocated and dispersed. In the process of the square rod moving upward, the elastic filter is vibrated by the knocking of the cylinder, and the elastic filter vibrates to screen out the solidified piezoelectric ceramic raw materials.

[0009] According to the above technical solution, the drying device includes a hollow ring, which is installed on the top of the outer wall of the convex ring. A groove ring is fixed on the bottom surface of the hollow ring. Resistance heating plates are fixed on both sides of the top surface of the hollow ring. The resistance heating plate is arranged below the elastic filter. The convex ring moves downward in the hollow ring, and the resistance heating plate contacts the elastic filter. The temperature of the resistance heating plate is transferred to the elastic filter, so that the temperature of the elastic filter rises during the downward movement, so that the solidified piezoelectric ceramic raw material on the elastic filter is heated and dried.

[0010] According to the above technical solution, a chamber is opened on the left side of the hollow ring, the hollow ring is slidably set on the inner wall of the convex ring, a spring 1 is rotatably installed on the inner wall of the groove ring, and the end of the spring 1 away from the groove ring is fixed on the outer wall of the threaded rod.

[0011] According to the above technical scheme, the drying device also includes a sliding rod, which is slidably installed on the inner wall of the chamber of the hollow ring, the top of the sliding rod is fixed to the left side of the bottom surface of the convex ring, the bottom surface of the sliding rod is set to an arc shape, a disc is fixed on the right side of the chamber of the hollow ring, a sliding column is penetrated through the middle of the right side of the circular plate and slidably installed, the left side of the sliding column is set to an arc shape, a spring 2 is arranged between the arc of the sliding column and the circular plate, the arc of the sliding column is on the movement trajectory of the sliding rod, a square plate is fixed on the right side of the sliding column, the square plate is on the movement trajectory of the threaded rod, the square plate moves into the thread teeth of the threaded rod, so that when the threaded rod rotates, the square plate scrapes off the piezoelectric ceramic raw material accumulated in the thread teeth.

[0012] According to the above technical solution, the anti-bow device includes a circular ring, which is fixed at the bottom of the outer wall of the hollow ring, and L-shaped short rods are fixed on the left and right sides of the outer wall of the circular ring, and a groove plate is fixed on the top surface of the L-shaped short rod. Square plates are hinged on both sides of the inner wall of the groove plate, and rectangular spring sheets are fixed on the top of the opposite surfaces of the square plates. The rectangular spring sheets are arranged under the elastic filter screen, and the rectangular spring sheets are against the bottom of the elastic filter screen. The rectangular spring sheets deform with the elastic filter screen, and under the elastic force of the rectangular spring sheets, the elastic filter screen can quickly recover when it is concave.

[0013] According to the above technical solution, the anti-bow device also includes a strip plate, which is fixed in the middle of the back side of the square plate, and a rectangular tube is fixed on the back side of the strip plate. A square slider is slidably installed on the inner wall of the rectangular tube, and a spring three is arranged between the square slider and the rectangular tube. A columnar head is fixed on the top surface of the square slider, and the columnar head is arranged below the elastic filter. Under the elastic force of the spring three of the square slider, the square slider slides up and down reciprocatingly in the rectangular tube, so that the edge of the elastic filter reciprocates and the solidified piezoelectric ceramic raw material accumulated on the edge of the elastic filter moves reciprocatingly toward the depression.

[0014] A drying method of a piezoelectric ceramic centrifugal granulation spray dryer comprises the following steps:

[0015] S1, start the heating module on the conical tank, the heating module transfers the temperature of the conical tank, pours the piezoelectric ceramic paste raw material into the feeding module on the conical tank, and the paste raw material falls downward into the round box of the spraying module;

[0016] S2, using electric wires to start the driving module on the conical tank, the driving module shaft drives the rotating rod to rotate forward and backward, the rotating rod drives the spraying module to rotate forward and backward, and the electric spray nozzle of the spraying module sprays atomized piezoelectric ceramic raw materials during the forward and backward reciprocating rotation;

[0017] S3. The ring frame is restricted by the U-shaped slide groove, and the convex ring moves up and down on the threaded rod. The solidified piezoelectric ceramic raw materials falling down are accumulated on the elastic filter screen, and the high temperature in the conical tank continues to dry the solidified piezoelectric ceramic raw materials;

[0018] S4. When the square rod moves downward, the cylinder presses against the elastic filter screen, forming a depression on the elastic filter screen. Under the torsion force of the torsion spring in the ring head block, the square rod drives the cylinder to reset, so that the elastic filter screen reciprocates to form a depression.

[0019] S5. When the square rod moves upward, under the torsion force of the torsion spring in the ring head block, the square rod drives the cylinder to rotate up and down reciprocatingly, and the cylinder hits the elastic filter screen reciprocatingly;

[0020] S6. When the convex ring moves downward, the convex ring moves downward in the hollow ring, the resistance heating plate contacts the elastic filter screen, and the temperature of the resistance heating plate is transferred to the elastic filter screen;

[0021] S7, the square sheet moves into the thread teeth of the threaded rod, so that when the threaded rod rotates, the square sheet scrapes off the piezoelectric ceramic raw material accumulated in the thread teeth;

[0022] S8, when the elastic filter reciprocates to form a depression, the rectangular spring sheet abuts against the bottom of the elastic filter, and the rectangular spring sheet deforms along with the elastic filter;

[0023] S9, under the elastic force of the spring 3 of the square slider, the square slider slides up and down in the rectangular tube reciprocatingly, so that the edge of the elastic filter is reciprocatingly raised, and the solidified piezoelectric ceramic material accumulated on the edge of the elastic filter moves reciprocatingly to the concave part;

[0024] S10, when the atomized piezoelectric ceramic raw material is atomized to form a solid, the water vapor evaporates upward and enters the fork-shaped air guide pipe of the feed module, and the rotating rod drives the stirring fan to rotate forward and reverse, and the stirring fan sweeps the solidified piezoelectric ceramic raw material out to the discharge port of the conical tank.

[0025] The present invention provides a piezoelectric ceramic centrifugal granulation spray dryer, which has the following beneficial effects:

[0026] (1) The present invention uses a threaded rod, a U-shaped chute, a convex ring, an elastic filter, a ring frame, a convex block, a ring head block and a square rod to cooperate with a cylinder. The ring frame moves up and down on the U-shaped chute, and the solidified piezoelectric ceramic raw material falling down is accumulated on the elastic filter. The high temperature in the conical tank continuously dries the solidified piezoelectric ceramic raw material. The elastic filter moves up and down to sift the solidified piezoelectric ceramic raw material downward, so that the solidified piezoelectric ceramic raw material can stay in the conical tank for a period of time, so that the solidified piezoelectric ceramic raw material can be completely dried, thereby preventing the spray dryer from drying the piezoelectric ceramic raw material. Incomplete drying during curing causes poor curing effect, and in the process of the square rod rotating downward, the elastic filter screen reciprocates to form a depression, allowing the cured piezoelectric ceramic raw materials on the elastic filter screen to reciprocate and accumulate and disperse, preventing the spray dryer from drying unevenly when curing the piezoelectric ceramic raw materials and causing poor granulation effect. In the process of the square rod moving upward, the elastic filter screen vibrates under the knocking of the cylinder, allowing the elastic filter screen to vibrate and screen out the cured piezoelectric ceramic raw materials, preventing the spray dryer from accumulating raw materials in the equipment when curing the piezoelectric ceramic raw materials and causing inconvenience in raw material screening.

[0027] (2) The present invention arranges a drying device so that the hollow ring, the groove ring, the resistance heating plate, the slide rod, the disc and the slide column cooperate with the square plate, the convex ring moves downward in the hollow ring, the resistance heating plate contacts the elastic filter screen, and the temperature of the resistance heating plate is transmitted to the elastic filter screen, so that the temperature of the elastic filter screen rises during the downward movement, so that the solidified piezoelectric ceramic raw material on the elastic filter screen is heated and dried, thereby preventing the accumulated raw material from being heated to a low temperature when the spray dryer is solidifying the piezoelectric ceramic raw material, resulting in poor drying and granulation effect; and the square plate moves into the thread teeth of the threaded rod, so that when the threaded rod rotates, the square plate scrapes off the piezoelectric ceramic raw material accumulated in the thread teeth, thereby preventing the raw material from being accumulated in the thread teeth of the threaded rod when the spray dryer is solidifying the piezoelectric ceramic raw material, resulting in poor equipment operation effect.

[0028] (3) The present invention arranges an anti-bow device so that the circular ring, L-shaped short rod, groove plate, square plate, rectangular spring sheet, strip plate, rectangular tube and square slider cooperate with the column head, and the rectangular spring sheet is pressed against the bottom of the elastic filter screen. The rectangular spring sheet deforms along with the elastic filter screen. Under the elastic force of the rectangular spring sheet, the elastic filter screen can quickly recover when it is concave, thereby preventing the elastic filter screen from being damaged when the spray dryer solidifies the piezoelectric ceramic raw material, resulting in poor effect of allocating the raw material. Moreover, under the elastic force of the spring three of the square slider, the square slider slides up and down in the rectangular tube, causing the edge of the elastic filter screen to bulge back and forth, allowing the solidified piezoelectric ceramic raw material accumulated on the edge of the elastic filter screen to move back and forth to the concave part, thereby preventing the piezoelectric ceramic raw material from accumulating on the edge of the elastic filter screen when the spray dryer solidifies the piezoelectric ceramic raw material, resulting in the raw material being stuck on the edge of the elastic filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the present invention as a whole;

[0030] Figure 2 It is a schematic diagram of the overall cross-section of the present invention;

[0031] Figure 3 It is a cross-sectional schematic diagram of the threaded rod of the present invention;

[0032] Figure 4 It is a partial enlarged schematic diagram of the threaded rod A of the present invention;

[0033] Figure 5 It is a schematic diagram of a cross-section of the drying device of the present invention;

[0034] Figure 6 It is a partial enlarged schematic diagram of the drying device B of the present invention;

[0035] Figure 7 is a schematic cross-sectional view of the anti-bow device of the present invention;

[0036] Figure 8 It is a partial enlarged schematic diagram of the anti-bow device C of the present invention.

[0037] In the figure: 1, conical tank; 2, support frame; 3, drive module; 4, rotating rod; 5, stirring fan; 6, spraying module; 7, feeding module; 8, heating module; 9, threaded rod; 10, drying device; 101, hollow ring; 102, groove ring; 103, resistance heating plate; 104, sliding rod; 105, round plate; 106, sliding column; 107, square plate; 11, anti-bow device; 111, circular ring; 112, L-shaped short rod; 113, groove plate; 114, square plate; 115, rectangular spring plate; 116, strip plate; 117, rectangular cylinder; 118, square slider; 119, column head; 12, U-shaped slide; 13, convex ring; 14, elastic filter; 15, ring frame; 16, convex block; 17, ring head block; 18, square rod; 19, cylinder. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] See also Figure 1-Figure 8 , one embodiment of the present invention is: a piezoelectric ceramic centrifugal granulation spray dryer, comprising a conical tank 1, a support frame 2 is fixed at the bottom of the outer wall of the conical tank 1, a driving module 3 is fixedly installed on the bottom surface of the conical tank 1, a rotating rod 4 is fixed on the top surface of the rotating shaft of the driving module 3, a stirring fan 5 is fixed at the bottom of the outer wall of the rotating rod 4, a spraying module 6 is fixed on the top surface of the rotating rod 4, a feeding module 7 is fixed on the top surface of the conical tank 1, the feeding module 7 is located at the top of the inner wall of the spraying module 6, a heating module 8 is fixedly installed on the top of the inner wall of the conical tank 1, a discharge port is opened at the bottom left side of the conical tank 1, the support frame 2 comprises a support ring and a support foot, the support ring is fixed at the bottom of the outer wall of the conical tank 1, and the support foot is respectively fixed on the four sides of the bottom surface of the support ring, the driving module 3 comprises a protective shell and a servo motor, the protective shell is fixedly installed on the bottom surface of the conical tank 1, the servo motor is fixedly installed at the bottom end of the protective shell, and the rotating shaft of the servo motor passes through The spray module 6 comprises a round box and an electric spray nozzle, the round box is fixedly mounted on the top surface of the rotating rod 4, a round opening is provided on the top surface of the round box, and the electric spray nozzles are respectively penetrated and fixed in the middle of the outer wall of the round box. The feeding module 7 comprises a round cover, an inverted convex tube and a fork-shaped air guide tube, the round cover is fixedly mounted on the top surface of the conical tank 1, the inverted convex tube is penetrated and fixedly mounted in the middle of the top surface of the round cover, the fork-shaped air guide tube is penetrated and fixed on both sides of the top surface of the round cover, the inner wall of the round box of the spray module 6 is located on the top surface of the outer wall of the inverted convex tube of the feeding module 7, the heating module 8 comprises an annular heat-conducting shell, a resistance heater and a coil, the annular heat-conducting shell is fixed on the top of the inner wall of the conical tank 1, the resistance heater is fixedly mounted on the right side of the outer wall of the conical tank 1, the coil is fixedly mounted on the left side of the resistance heater, the coil is penetrated and fixed on the right side of the outer wall of the conical tank 1, and the coil is arranged in the middle of the inner part of the annular heat-conducting shell.

[0040] A threaded rod 9 is fixed on the top of the outer wall of the rotating rod 4, and a U-shaped slide groove 12 is fixed on the left and right sides of the inner wall of the conical tank 1. A convex ring 13 is rotatably installed on the top of the outer wall of the threaded rod 9. The threaded teeth on the inner wall of the convex ring 13 mesh with the threaded teeth on the threaded rod 9. An elastic filter screen 14 is fixed in the middle of the outer wall of the convex ring 13, and a ring frame 15 is fixed on the outer wall of the elastic filter screen 14. Two slide groove openings are provided on both sides of the top surface of the ring frame 15. The slide groove of the ring frame 15 is located on the inner wall and outer wall of the U-shaped slide groove 12. The solidified piezoelectric ceramic raw material falling downward is accumulated on the elastic filter screen 14, and the high temperature in the conical tank 1 continuously dries the solidified piezoelectric ceramic raw material. The elastic filter screen 14 reciprocates up and down to screen out the solidified piezoelectric ceramic raw material downward, so that the solidified piezoelectric ceramic raw material can stay in the conical tank 1 for a period of time, so that the solidified piezoelectric ceramic raw material can be thoroughly dried, so as to avoid the poor curing effect caused by the incomplete drying of the spray dryer when curing the piezoelectric ceramic raw material.

[0041] A plurality of protrusions 16 are fixed to the opposite surfaces of the inner wall of the U-shaped slide 12, and ring head blocks 17 are fixed on both sides of the top surface of the ring frame 15. The inner wall of the ring head block 17 is hinged with a square rod 18, and a torsion spring is arranged between the square rod 18 and the inner wall of the ring head block 17. The square rod 18 is arranged in an inverted eight-shaped shape, and a cylinder 19 is fixed to the opposite surface of the square rod 18. The cylinder 19 is arranged above the elastic filter 14, and the protrusions 16 are all on the movement trajectory of the square rod 18. When the square rod 18 moves downward, the elastic filter 14 reciprocates to form a depression, so that the solidified piezoelectric ceramic raw material on the elastic filter screen 14 is reciprocated and piled up and dispersed, so as to avoid uneven drying and poor granulation effect when the spray dryer solidifies the piezoelectric ceramic raw material. In the process of the square rod 18 moving upward, the elastic filter screen 14 vibrates under the impact of the cylinder 19, so that the elastic filter screen 14 vibrates and screens out the solidified piezoelectric ceramic raw material, so as to avoid the accumulation of raw materials in the equipment when the spray dryer solidifies the piezoelectric ceramic raw material, causing inconvenience in raw material screening.

[0042] When in use, the support frame 2 supports the conical tank 1, and the heating module 8 on the conical tank 1 is started with an electric wire. The resistance heater of the heating module 8 starts to heat up, and the resistance heater transfers the temperature to the coil, and the coil transfers the temperature to the annular heat-conducting shell, so that the temperature in the conical tank 1 rises rapidly. The staff pours the piezoelectric ceramic paste raw material into the feeding module 7 on the conical tank 1, and the paste raw material enters the inverted convex tube of the feeding module 7. The paste raw material in the inverted convex tube falls downward into the round box of the spraying module 6. The driving module 3 on the conical tank 1 is started with an electric wire, and the servo motor shaft in the driving module 3 starts to rotate back and forth, and the servo motor shaft drives the rotating rod 4 to rotate back and forth, and the rotating rod 4 drives the circular box of the spraying module 6. The box rotates back and forth, and the round box drives the electric spray nozzle to rotate back and forth. At the same time, the electric spray nozzle of the spray module 6 is started by an electric wire. The electric spray nozzle sprays atomized piezoelectric ceramic raw material during the reciprocating rotation. Under the action of centrifugal force, the atomized piezoelectric ceramic raw material is thrown around. The atomized piezoelectric ceramic raw material is heated by the annular heat-conducting shell, so that the atomized piezoelectric ceramic raw material is quickly solidified to form particles, and the solidified piezoelectric ceramic raw material falls downward. At the same time, when the atomized piezoelectric ceramic raw material is atomized to form a solid, water vapor evaporates upward and enters the fork-shaped air guide tube of the feed module 7. At the same time, the rotating rod 4 drives the stirring fan 5 to rotate back and forth, and the stirring fan 5 sweeps the solidified piezoelectric ceramic raw material to the discharge port of the conical tank 1.

[0043] Since there is still a certain amount of moisture in the raw materials during the curing process, it is easy to cause the raw materials to be not completely dried. While the servo motor shaft drives the rotating rod 4 to rotate back and forth, the rotating rod 4 drives the threaded rod 9 to rotate back and forth, the threaded rod 9 drives the convex ring 13 to rotate, the convex ring 13 drives the elastic filter 14 to rotate, the elastic filter 14 drives the ring frame 15 to rotate, the ring frame 15 is restricted by the U-shaped slide groove 12, the convex ring 13 reciprocates up and down on the threaded rod 9, the convex ring 13 drives the elastic filter 14 to reciprocate up and down, the elastic filter 14 drives the ring frame 15 to reciprocate up and down, and the ring frame 15 is on the U-shaped slide groove 12. The elastic filter screen 14 reciprocates up and down. During the reciprocating up and down movement of the elastic filter screen 14, the solidified piezoelectric ceramic raw material that falls downward is accumulated on the elastic filter screen 14. The high temperature in the conical tank 1 continues to dry the solidified piezoelectric ceramic raw material. At the same time, the elastic filter screen 14 reciprocates up and down to screen out the solidified piezoelectric ceramic raw material downward, so that the solidified piezoelectric ceramic raw material can stay in the conical tank 1 for a period of time, so that the solidified piezoelectric ceramic raw material can be thoroughly dried, thereby preventing the solidified piezoelectric ceramic raw material from being not dried thoroughly enough, thereby avoiding the problem of poor curing effect caused by incomplete drying of the piezoelectric ceramic raw material by the spray dryer.

[0044] While the elastic filter 14 drives the ring frame 15 to move back and forth up and down, the ring frame 15 drives the ring head block 17 to move back and forth up and down, the ring head block 17 drives the square rod 18 to move back and forth up and down, and the square rod 18 drives the cylinder 19 to move back and forth. In the process of the square rod 18 moving downward, the square rod 18 contacts the protrusion 16, the square rod 18 rotates downward in the ring head block 17, the ring head block 17 drives the cylinder 19 to rotate downward, and the cylinder 19 resists the elastic filter 14, forming a depression on the elastic filter 14. When the square rod 18 leaves the protrusion 16, under the torsion force of the torsion spring in the ring head block 17, the square rod 18 drives the cylinder 19 to reset, so that the elastic filter 14 reciprocates to form a depression, allowing the solidified piezoelectric ceramic raw material on the elastic filter 14 to be reciprocally accumulated and dispersed, thereby preventing the solidified piezoelectric ceramic raw material from being unevenly dried in the elastic filter 14. This avoids the problem of poor granulation effect caused by uneven drying when the spray dryer solidifies the piezoelectric ceramic raw material. In the process of the square rod 18 moving upward, the square rod 18 contacts the protrusion 16, and the square rod 18 rotates upward in the ring head block 17, and the ring head block 17 drives the cylinder 19 to rotate upward. When the square rod 18 leaves the protrusion 16, under the torsion force of the torsion spring in the ring head block 17, the square rod 18 drives the cylinder 19 to rotate up and down reciprocatingly, and the cylinder 19 reciprocatingly hits the elastic filter screen 14, so that the elastic filter screen 14 vibrates under the knocking of the cylinder 19, and the elastic filter screen 14 vibrates to screen out the solidified piezoelectric ceramic raw material, preventing the solidified piezoelectric ceramic raw material from accumulating in the elastic filter screen 14, thereby avoiding the problem of inconvenience in raw material screening caused by the accumulation of raw materials in the equipment when the spray dryer solidifies the piezoelectric ceramic raw material.

[0045] See also Figure 1-Figure 8 On the basis of the above embodiment, another embodiment of the present invention further includes a drying device 10 and an anti-bow device 11, wherein the drying device 10 is arranged on the top of the outer wall of the convex ring 13, and the drying device 10 includes a hollow ring 101, which is installed on the top of the outer wall of the convex ring 13, and a groove ring 102 is fixed on the bottom surface of the hollow ring 101, and resistance heating plates 103 are fixed on both sides of the top surface of the hollow ring 101, and the resistance heating plates 103 are arranged below the elastic filter screen 14, and the left side of the hollow ring 101 is opened. The hollow ring 101 is slidably arranged on the inner wall of the convex ring 13, and a spring 1 is rotatably installed on the inner wall of the groove ring 102. The end of the spring 103 away from the groove ring 102 is fixed on the outer wall of the threaded rod 9. The temperature of the resistance heating plate 103 is transmitted to the elastic filter screen 14, so that the temperature of the elastic filter screen 14 rises during the downward movement, so that the solidified piezoelectric ceramic raw material on the elastic filter screen 14 is heated and dried, so as to avoid the poor drying and granulation effect caused by the low heating temperature of the accumulated raw materials when the spray dryer solidifies the piezoelectric ceramic raw materials.

[0046] The drying device 10 also includes a slide bar 104, which is slidably mounted on the inner wall of the chamber of the hollow ring 101. The top of the slide bar 104 is fixed to the left side of the bottom surface of the convex ring 13, and the bottom surface of the slide bar 104 is arranged in an arc shape. A disc 105 is fixed to the right side of the chamber of the hollow ring 101. A slide column 106 is penetrated through the middle of the right side of the disc 105 and slidably mounted thereon. The left side of the slide column 106 is arranged in an arc shape. A spring 2 is arranged between the arc of the slide column 106 and the disc 105. The arc of the slide column 106 is on the movement trajectory of the slide bar 104. A square sheet 107 is fixed to the right side of the slide column 106. The square sheet 107 is on the movement trajectory of the threaded rod 9, so that when the threaded rod 9 rotates, the square sheet 107 scrapes off the piezoelectric ceramic raw material accumulated in the thread teeth, so as to avoid the accumulation of raw materials in the thread teeth of the threaded rod 9 when the spray dryer solidifies the piezoelectric ceramic raw material, resulting in poor equipment operation effect.

[0047] An anti-bow device 11 is provided at the bottom of the outer wall of the drying device 10, and the anti-bow device 11 includes a circular ring 111, which is fixed at the bottom of the outer wall of the hollow ring 101, and L-shaped short rods 112 are fixed on the left and right sides of the outer wall of the circular ring 111, and a groove plate 113 is fixed on the top surface of the L-shaped short rod 112. Square plates 114 are hinged on both sides of the inner wall of the groove plate 113, and a rectangular spring sheet 115 is fixed on the top of the opposite surface of the square plate 114. The rectangular spring sheet 115 is arranged below the elastic filter screen 14, and the rectangular spring sheet 115 is deformed with the elastic filter screen 14. Under the elastic force of the rectangular spring sheet 115, the elastic filter screen 14 can quickly recover when it is concave, so as to avoid the elastic filter screen 14 being damaged when the spray dryer is solidifying the piezoelectric ceramic raw material, resulting in poor effect of allocating the raw materials.

[0048] The anti-bow device 11 also includes a strip plate 116, which is fixed in the middle of the back side of the square plate 114. A rectangular tube 117 is fixed on the back side of the strip plate 116. A square slider 118 is slidably installed on the inner wall of the rectangular tube 117. A spring 3 is arranged between the square slider 118 and the rectangular tube 117. A columnar head 119 is fixed on the top surface of the square slider 118. The columnar head 119 is arranged below the elastic filter screen 14, so that the edge of the elastic filter screen 14 is reciprocally convex, and the solidified piezoelectric ceramic raw material accumulated on the edge of the elastic filter screen 14 moves back and forth to the recessed part, so as to avoid the piezoelectric ceramic raw material being accumulated on the edge of the elastic filter screen 14 when the spray dryer is solidifying, causing the raw material to be stuck on the edge of the elastic filter screen 14.

[0049] When the convex ring 13 reciprocates up and down on the threaded rod 9, the spring on the threaded rod 9 supports the groove ring 102, the groove ring 102 supports the hollow ring 101, and the hollow ring 101 supports the resistance heating plate 103. At the same time, the electric wire starts the resistance heating plate 103, and the temperature on the resistance heating plate 103 begins to rise. When the convex ring 13 moves downward, the convex ring 13 moves downward in the hollow ring 101, and the resistance heating plate 103 contacts the elastic filter screen 14. The temperature of the resistance heating plate 103 is transferred to the elastic filter screen 14, so that the temperature of the elastic filter screen 14 rises during the downward movement, so that the solidified piezoelectric ceramic raw material on the elastic filter screen 14 is heated and dried, and the low temperature on the elastic filter screen 14 is prevented from causing poor drying effect, thereby avoiding the problem of poor drying and granulation effect caused by the low heating temperature of the accumulated raw materials when the spray dryer solidifies the piezoelectric ceramic raw materials.

[0050] When the convex ring 13 moves downward in the hollow ring 101, the convex ring 13 drives the sliding rod 104 to move downward, and the sliding rod 104 moves downward in the chamber of the hollow ring 101. The hollow ring 101 supports the disc 105, and the disc 105 supports the sliding column 106. In the process of the sliding rod 104 moving downward, the sliding rod 104 contacts the sliding column 106, and the sliding column 106 is squeezed by the sliding rod 104. The sliding column 106 moves to the right, and the spring 2 on the sliding column 106 begins to shrink. The sliding column 106 drives the square piece 107 to move to the right, and the square piece 107 moves into the thread teeth of the threaded rod 9, so that during the rotation of the threaded rod 9, the square piece 107 scrapes off the piezoelectric ceramic raw material accumulated in the thread teeth to prevent the solidified piezoelectric ceramic raw material from accumulating in the thread teeth of the threaded rod 9, thereby avoiding the problem of poor equipment operation effect caused by the accumulation of raw materials in the thread teeth of the threaded rod 9 when the spray dryer solidifies the piezoelectric ceramic raw material.

[0051] When the convex ring 13 moves downward in the hollow ring 101, the hollow ring 101 supports the circular ring 111, the circular ring 111 supports the L-shaped short rod 112, the L-shaped short rod 112 supports the groove plate 113, the groove plate 113 supports the square plate 114, the square plate 114 supports the rectangular spring sheet 115, and when the convex ring 13 drives the elastic filter 14 to move downward, the elastic filter 14 contacts the rectangular spring sheet 115, and when the elastic filter 14 reciprocates to form a depression, the rectangular spring sheet 115 is pressed against the elastic filter 14. The spring sheet 115 is against the bottom of the elastic filter screen 14, and the rectangular spring sheet 115 is deformed along with the elastic filter screen 14. At the same time, the square plate 114 reciprocates up and down in the slot plate 113. Under the elastic force of the rectangular spring sheet 115, the elastic filter screen 14 can quickly recover when it is concave, thereby preventing the elastic filter screen 14 in the equipment from being damaged when it is reciprocatingly concave, thereby avoiding the problem of poor raw material distribution effect caused by damage to the elastic filter screen 14 when the spray dryer is solidifying the piezoelectric ceramic raw material.

[0052] When the square plate 114 rotates back and forth up and down in the groove plate 113, the square plate 114 drives the strip plate 116 to rotate back and forth up and down, the strip plate 116 drives the rectangular tube 117 to rotate back and forth up and down, the rectangular tube 117 drives the square slider 118 to rotate back and forth up and down, the square slider 118 drives the column head 119 to rotate back and forth up and down, the column head 119 rests against the edge of the elastic filter screen 14 and rotates back and forth up and down, under the action of the extrusion force, the square slider 118 moves downward in the rectangular tube 117, under the elastic force of the spring three of the square slider 118, the square slider 118 slides back and forth up and down in the rectangular tube 117, so that the edge of the elastic filter screen 14 bulges back and forth, allowing the solidified piezoelectric ceramic raw material accumulated on the edge of the elastic filter screen 14 to move back and forth to the recessed part, preventing the solidified piezoelectric ceramic raw material from accumulating on the edge of the elastic filter screen 14, thereby avoiding the problem that the piezoelectric ceramic raw material accumulates on the edge of the elastic filter screen 14 when the spray dryer solidifies it, causing the raw material to be stuck on the edge of the elastic filter screen 14.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A piezoelectric ceramic centrifugal granulation spray dryer, comprising a conical tank (1), a support frame (2) is fixed to the bottom of the outer wall of the conical tank (1), a driving module (3) is fixedly installed on the bottom surface of the conical tank (1), a rotating rod (4) is fixed to the top surface of the rotating shaft of the driving module (3), a stirring fan (5) is fixed to the bottom of the outer wall of the rotating rod (4), a spraying module (6) is fixed to the top surface of the rotating rod (4), a feeding module (7) is fixed to the top surface of the conical tank (1), the feeding module (7) is located at the top of the inner wall of the spraying module (6), and a heating module (8) is fixedly installed on the top of the inner wall of the conical tank (1), characterized in that: A threaded rod (9) is fixed to the top of the outer wall of the rotating rod (4); U-shaped slide grooves (12) are fixed to the left and right sides of the inner wall of the conical tank (1); a convex ring (13) is rotatably mounted on the top of the outer wall of the threaded rod (9); the threaded teeth on the inner wall of the convex ring (13) mesh with the threaded teeth of the threaded rod (9); an elastic filter screen (14) is fixed in the middle of the outer wall of the convex ring (13); a ring frame (15) is fixed to the outer wall of the elastic filter screen (14); two slide groove openings are provided on both sides of the top surface of the ring frame (15); the slide groove openings of the ring frame (15) are located on the inner wall and the outer wall of the U-shaped slide groove (12); a drying device (10) is provided on the top of the outer wall of the convex ring (13); and an anti-bow device (11) is provided at the bottom of the outer wall of the drying device (10); A plurality of protrusions (16) are fixed to opposite surfaces of the inner wall of the U-shaped slide groove (12); ring head blocks (17) are fixed to both sides of the top surface of the ring frame (15); square rods (18) are hingedly connected to the inner wall of the ring head block (17); a torsion spring is arranged between the square rod (18) and the inner wall of the ring head block (17); the square rod (18) is arranged in an inverted figure eight shape; cylinders (19) are fixed to opposite surfaces of the square rod (18); the cylinders (19) are arranged above the elastic filter screen (14); and the protrusions (16) are located on the movement trajectory of the square rod (18); The drying device (10) comprises a hollow ring (101), the hollow ring (101) being mounted on the top of the outer wall of the convex ring (13), a groove ring (102) being fixed on the bottom surface of the hollow ring (101), and resistance heating plates (103) being fixedly mounted on both sides of the top surface of the hollow ring (101), the resistance heating plates (103) being arranged below the elastic filter screen (14); A chamber is provided on the left side of the hollow ring (101), the hollow ring (101) is slidably arranged on the inner wall of the convex ring (13), a spring 1 is rotatably mounted on the inner wall of the groove ring (102), and one end of the spring 1 away from the groove ring (102) is fixed to the outer wall of the threaded rod (9); The drying device (10) further comprises a sliding rod (104), wherein the sliding rod (104) is slidably mounted on the inner wall of the chamber of the hollow ring (101), the top of the sliding rod (104) is fixed to the left side of the bottom surface of the convex ring (13), the bottom surface of the sliding rod (104) is arranged in an arc shape, a disc (105) is fixed to the right side of the chamber of the hollow ring (101), a sliding column (106) passes through the middle of the right side of the disc (105) and is slidably mounted thereon, the left side of the sliding column (106) is arranged in an arc shape, a spring 2 is arranged between the arc of the sliding column (106) and the disc (105), the arc of the sliding column (106) is on the movement trajectory of the sliding rod (104), a square plate (107) is fixed to the right side of the sliding column (106), and the square plate (107) is on the movement trajectory of the threaded rod (9); The anti-bow device (11) comprises a circular ring (111), the circular ring (111) being fixed to the bottom of the outer wall of the hollow ring (101), L-shaped short rods (112) being fixed to the left and right sides of the outer wall of the circular ring (111), a groove plate (113) being fixed to the top surface of the L-shaped short rod (112), square plates (114) being hingedly connected to both sides of the inner wall of the groove plate (113), a rectangular spring sheet (115) being fixed to the top of the opposite surface of the square plate (114), and the rectangular spring sheet (115) being arranged below the elastic filter screen (14); The anti-bow device (11) further comprises a strip plate (116), wherein the strip plate (116) is fixed in the middle of the opposite sides of the square plate (114), a rectangular tube (117) is fixed on the opposite sides of the strip plate (116), a square slider (118) is slidably mounted on the inner wall of the rectangular tube (117), a spring (3) is arranged between the square slider (118) and the rectangular tube (117), a columnar head (119) is fixed on the top surface of the square slider (118), and the columnar head (119) is arranged below the elastic filter (14).

2. A piezoelectric ceramic centrifugal granulation spray dryer according to claim 1, characterized in that: The left bottom of the conical tank (1) is provided with a discharge port, the support frame (2) comprises a support ring and a support foot, the support ring is fixed to the bottom of the outer wall of the conical tank (1), and the support foot is respectively fixed to the four sides of the bottom surface of the support ring, the heating module (8) comprises an annular heat-conducting shell, a resistance heater and a coil, the annular heat-conducting shell is fixed to the top of the inner wall of the conical tank (1), the resistance heater is fixedly installed on the right side of the outer wall of the conical tank (1), the coil is fixedly installed on the left side of the resistance heater, the coil passes through and is fixed to the right side of the outer wall of the conical tank (1), and the coil is arranged in the middle of the annular heat-conducting shell.

3. The drying method of a piezoelectric ceramic centrifugal granulation spray dryer according to claim 2, characterized in that: The following steps are involved: S1, starting the heating module (8) on the conical tank (1), the heating module (8) transfers the temperature of the conical tank (1) to pour the piezoelectric ceramic paste raw material into the feeding module (7) on the conical tank (1), and the paste raw material falls downward into the round box of the spraying module (6); S2, using electric wires to start the driving module (3) on the conical tank (1), the driving module (3) rotating shaft drives the rotating rod (4) to rotate forward and backward, the rotating rod (4) drives the spraying module (6) to rotate forward and backward, and the electric spray nozzle of the spraying module (6) sprays atomized piezoelectric ceramic raw materials during the process of forward and backward reciprocating rotation; S3, the ring frame (15) is restricted by the U-shaped slide groove (12), the convex ring (13) moves up and down on the threaded rod (9), and the solidified piezoelectric ceramic raw material falling downward is accumulated on the elastic filter (14), and the high temperature in the conical tank (1) continues to dry the solidified piezoelectric ceramic raw material; S4. During the downward movement of the square rod (18), the cylinder (19) abuts against the elastic filter (14), forming a depression on the elastic filter (14). Under the torsion force of the torsion spring in the ring head block (17), the square rod (18) drives the cylinder (19) to reset, so that the elastic filter (14) reciprocates to form a depression; S5. During the upward movement of the square rod (18), under the torsion force of the torsion spring in the ring head block (17), the square rod (18) drives the cylinder (19) to rotate up and down reciprocatingly, and the cylinder (19) reciprocates and strikes the elastic filter (14); S6. When the convex ring (13) moves downward, the convex ring (13) moves downward in the hollow ring (101), the resistance heating plate (103) contacts the elastic filter screen (14), and the temperature of the resistance heating plate (103) is transferred to the elastic filter screen (14); S7, the square sheet (107) moves into the thread teeth of the threaded rod (9), so that during the rotation of the threaded rod (9), the square sheet (107) scrapes off the piezoelectric ceramic raw material accumulated in the thread teeth; S8, when the elastic filter (14) reciprocates to form a depression, the rectangular spring sheet (115) abuts against the bottom of the elastic filter (14), and the rectangular spring sheet (115) deforms along with the elastic filter (14); S9, under the elastic force of the spring 3 of the square slider (118), the square slider (118) slides up and down in the rectangular cylinder (117) reciprocatingly, so that the edge of the elastic filter (14) bulges reciprocatingly, and the solidified piezoelectric ceramic raw material accumulated on the edge of the elastic filter (14) moves reciprocatingly toward the recessed position; S10. When the atomized piezoelectric ceramic raw material is atomized to form a solid, water vapor evaporates upward and enters the fork-shaped air guide tube of the feed module (7). The rotating rod (4) drives the stirring fan (5) to rotate back and forth, and the stirring fan (5) sweeps the solidified piezoelectric ceramic raw material out to the discharge port of the conical tank (1).

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