CN112403898A

CN112403898A - Screening plant is used in preparation of dielectric ceramic powder

Info

Publication number: CN112403898A
Application number: CN202011178588.1A
Authority: CN
Inventors: 李克芽
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-02-26

Abstract

The invention discloses a screening device for preparing dielectric ceramic powder, which belongs to the technical field of dielectric ceramic powder preparation, and adopts the technical scheme that the screening device comprises an equipment box, a feeding device is arranged at the top of the equipment box, the feeding device penetrates through the equipment box and extends to the inside of the equipment box, the crushing and screening can be integrated by arranging a crushing device, the service performance of the device is improved, a plurality of rotating rods are mutually staggered and crushed, the crushing effect is better, the ceramic powder can be classified and screened by arranging a screen plate device, unqualified ceramic powder can be directly screened out, the screening effect is improved, two strip plates can be automatically cleaned under the driving of an electric push rod, manual disassembly and cleaning are not needed, the maintenance difficulty is reduced, the cleaning efficiency is improved, the screening effect of the screen plate device is ensured, and through arranging a reciprocating assembly, can drive the screening case and realize the up-and-down motion, avoid ceramic powder to pile up on the strip shaped plate, improve the efficiency of screening.

Description

Screening plant is used in preparation of dielectric ceramic powder

Technical Field

The invention relates to the technical field of dielectric ceramic powder preparation, in particular to a screening device for preparing dielectric ceramic powder.

Background

The ceramic powder is also called dielectric ceramic, has polarization capability under the action of an electric field, can establish the functional ceramic of the electric field in vivo for a long time, can be divided into electric insulation, capacitor, piezoelectric, pyroelectric and ferroelectric ceramics according to the application and performance, has the characteristics of high insulation resistivity, small dielectric constant, small dielectric loss, good heat conduction performance, small expansion coefficient, good thermal stability and chemical stability and the like, is used for installing, fixing and protecting electronic elements, is used as a ceramic material for insulating support of a current-carrying conductor and various circuit substrates, and has the main materials of alumina, corundum, mullite, forsterite, magnesia, zirconia, zirconite, boron nitride, aluminum nitride, beryllium oxide, spodumene, various glass ceramics and the like.

Ceramic powder need pulverize it earlier when production, sieving it, the mesh of smashing and screening can not be realized simultaneously to current sieve device, the practicality effect is not strong, sieve clearance is inconvenient in the use, influence the screening effect after long-term, and the ceramic powder of screening out can not realize automatic cycle, need collect and carry out the blowing, intensity of labour is big, consequently, technical staff in the field provides a screening plant for dielectric ceramic powder preparation, with the problem of proposing in solving above-mentioned background art.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide the screening device for preparing the dielectric ceramic powder, which has the advantages that the screening device can realize the integration of crushing and screening, automatically clean the screen plate, is more convenient to maintain, can realize automatic circulation of unqualified ceramic powder and improve the production efficiency.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A screening device for preparing dielectric ceramic powder comprises an equipment box, wherein a feeding device is arranged at the top of the equipment box, the feeding device penetrates through the equipment box and extends into the equipment box, a crushing device is arranged on the left side of the equipment box, the crushing device penetrates through the equipment box and extends into the equipment box, a first funnel positioned below the crushing device is fixedly connected to the inner wall of the equipment box, a reciprocating component is fixedly connected to the left side of the equipment box, a screening box is movably connected to the inner wall of the equipment box, a limiting component is fixedly connected to the right side of the equipment box, the left side of the screening box penetrates through the equipment box and contacts with the reciprocating component, the right side of the screening box penetrates through the screening box and is fixedly connected with the limiting component, a collecting frame is arranged on the inner bottom wall of the equipment box, and a packing auger is fixedly connected to the right side of the equipment box, the left side intercommunication of auger has the feeder hopper, the inner wall of screening case is provided with the sieve device, the right side fixedly connected with quantity of sieve device is two first stock guide, first stock guide runs through the equipment box and extends to the top of feeder hopper, the left side intercommunication of auger has the second stock guide that is located the feeder hopper top, the second stock guide is located feed arrangement's top.

Further, reducing mechanism includes a plurality of dwang, every the dwang all rotates with the inner wall of equipment box to be connected, every the equal fixedly connected with evenly distributed's in surface crushing sword of dwang, every the outside that the equipment box and extend to the equipment box all run through in the left side of dwang, every the equal fixedly connected with gear in left side of dwang, adjacent two gear intermeshing connects, the rear the first servo motor of left side fixedly connected with of gear.

Further, the front of equipment box articulates there is the side door that quantity is two, the front fixedly connected with handle of side door.

Further, the sieve plate device includes that quantity is two bar shaped plate, two evenly distributed's sieve mesh, two are all seted up at the top of bar shaped plate the opposite side fixedly connected with round bar of bar shaped plate, the surface of round bar is provided with the brush hair, bar shaped plate and first stock guide fixed connection.

Further, the spout has all been seted up to the inner wall both sides of screening case, the below the equal fixedly connected with slider in both sides of strip shaped plate, the slider is located the inner wall of spout, the interior diapire fixedly connected with electric putter of spout, electric putter's top and slider fixed connection.

Further, the activity mouth has been seted up in the left side of equipment box, the left side fixedly connected with connecting rod of screening case, the connecting rod runs through the activity mouth and extends to the outside of activity mouth, the interior roof fixedly connected with second spring of activity mouth, the bottom and the connecting rod fixed connection of second spring.

Further, the reciprocating assembly comprises an L-shaped frame, a second servo motor is fixedly connected to the right side of the L-shaped frame, a cam is fixedly connected to an output shaft of the second servo motor, and the cam is in contact with the connecting rod.

Further, spacing subassembly includes spacing frame, the right side fixed connection of spacing frame and equipment box, the fixed level of practicing of interior diapire of spacing frame and first spring, the top fixedly connected with gag lever post of first spring, the gag lever post runs through spacing frame and extends to the outside of spacing frame, the bar mouth has been seted up on the right side of equipment box, the right side fixedly connected with horizontal pole of screening case, the horizontal pole run through the bar mouth and with gag lever post fixed connection.

Further, feed arrangement includes the circular pipe, the circular pipe runs through the equipment box and extends to the inside of equipment box, the inner wall fixedly connected with second funnel of circular pipe, the inner wall fixedly connected with of circular pipe is located the branch material awl of second funnel below, the inside of branch material awl is provided with evenly distributed's heating pipe.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

1. according to the scheme, the smashing device is arranged, smashing and screening can be integrated, the using performance of the device is improved, the rotating rods are mutually staggered and smashed, the smashing effect is better, the sieve plate device is arranged, ceramic powder can be graded and screened, unqualified ceramic powder can be directly screened out, the screening effect is improved, the two strip-shaped plates can be automatically cleaned under the driving of the electric push rod, manual dismantling and cleaning are not needed, the maintenance difficulty is reduced, the cleaning efficiency is improved, and the screening effect of the sieve plate device is guaranteed;

5. the reciprocating assembly is arranged, the screening box can be driven to move up and down, ceramic powder is prevented from being accumulated on the strip-shaped plate, screening efficiency is improved, the speed of the reciprocating assembly can be limited by the second spring, the screening box is prevented from being too large in movement amplitude under the driving of the cam, screening effect is prevented from being influenced, meanwhile, the movable port can limit the screening box by using the connecting rod, deviation is avoided when the screening box moves up and down, and normal operation of the device is guaranteed;

3. by arranging the feeding device, the second hopper can prevent materials from being accumulated in the circular pipe, the material distributing cone can disperse the materials, and the materials are prevented from being accumulated on the surface of the crushing device, so that the crushing effect of the crushing device is better, the efficiency is higher, the materials can be dried by the heating pipe, and the problem of poor crushing effect caused by the fact that the materials containing moisture are subjected to the inside of the equipment box is solved;

4. the limiting assembly is arranged, so that the screening box can be limited, the screening box is prevented from deviating when moving up and down, the first spring can play a speed-reducing effect, and the overlarge movement amplitude is avoided;

5. the side door is arranged, so that the ceramic powder collected in the collecting frame can be taken out, the operation is more convenient, and the handle is arranged, so that the side door is more convenient and labor-saving to open;

6. through setting up slider and spout, can carry on spacingly to the sieve device, avoid taking place the skew when electric putter starts realization automatically cleaning, through setting up the auger, can realize great granule automatic feeding, smash again, full automation, intensity of labour is little.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a schematic view of the connection between the apparatus box and the crushing apparatus according to the present invention;

fig. 4 is a schematic structural view of a sieve plate device of the invention;

FIG. 5 is a schematic structural view of a feeding device according to the present invention;

FIG. 6 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;

FIG. 7 is an enlarged view taken at B of FIG. 2 in accordance with the present invention;

fig. 8 is an enlarged view of the invention at C in fig. 2.

The reference numbers in the figures illustrate:

1. an equipment box; 101. a strip-shaped opening; 102. a movable opening; 103. a second spring; 2. a feeding device; 201. heating a tube; 202. a circular tube; 203. a second hopper; 204. a material separating cone; 3. a crushing device; 301. rotating the rod; 302. a crushing knife; 303. a gear; 304. a first servo motor; 4. a first hopper; 5. screening the box; 501. a chute; 502. a connecting rod; 6. an electric push rod; 7. a sieve plate device; 701. a strip plate; 702. screening holes; 703. a circular rod; 704. brushing; 705. a slider; 8. a first material guide plate; 9. a packing auger; 10. a feed hopper; 11. a second material guide plate; 12. a limiting component; 1201. a limiting frame; 1202. a first spring; 1203. a limiting rod; 1204. a cross bar; 13. a reciprocating assembly; 1301. an L-shaped frame; 1302. a second servo motor; 1303. a cam; 14. a collection frame; 15. a side door; 1501. a handle.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Referring to fig. 1-8, in the embodiment of the present invention, a screening device for preparing dielectric ceramic powder includes an equipment box 1, a feeding device 2 is disposed on a top of the equipment box 1, the feeding device 2 penetrates through the equipment box 1 and extends into the equipment box 1, a crushing device 3 is disposed on a left side of the equipment box 1, the crushing device 3 penetrates through the equipment box 1 and extends into the equipment box 1, a first funnel 4 located below the crushing device 3 is fixedly connected to an inner wall of the equipment box 1, a reciprocating component 13 is fixedly connected to a left side of the equipment box 1, a screening box 5 is movably connected to the inner wall of the equipment box 1, a limiting component 12 is fixedly connected to a right side of the equipment box 1, the left side of the screening box 5 penetrates through the equipment box 1 and contacts with the reciprocating component 13, the right side of the screening box 5 penetrates through the screening box 5 and is fixedly connected with the limiting component 12, a collecting frame 14 is disposed on an inner, the right side fixedly connected with auger 9 of equipment box 1, the left side intercommunication of auger 9 has feeder hopper 10, the inner wall of screening case 5 is provided with sieve device 7, the right side fixedly connected with quantity of sieve device 7 is two first stock guide 8, first stock guide 8 runs through equipment box 1 and extends to the top of feeder hopper 10, the left side intercommunication of auger 9 has the second stock guide 11 that is located feeder hopper 10 top, second stock guide 11 is located feed arrangement 2's top.

Referring to fig. 2 or fig. 3, reducing mechanism 3 includes a plurality of dwang 301, every dwang 301 all rotates with the inner wall of equipment box 1 to be connected, the equal fixedly connected with evenly distributed's in surface crushing sword 302 of every dwang 301, the left side of every dwang 301 all runs through equipment box 1 and extends to the outside of equipment box 1, the equal fixedly connected with gear 303 in left side of every dwang 301, two adjacent gear 303 intermeshing connects, the first servo motor 304 of left side fixedly connected with of rear gear 303, through setting up reducing mechanism 3, can realize smashing screening in an organic whole, the performance of the improvement device, and a plurality of dwang 301 smash for crisscross each other, crushing effect is better.

Referring to fig. 1, the front of equipment case 1 articulates there is quantity side door 15 for two, and the front fixedly connected with handle 1501 of side door 15 through setting up side door 15, can take out the ceramic powder of collecting in the frame 14, and it is more convenient to operate, through setting up handle 1501, and is more convenient laborsaving when opening side door 15.

Refer to fig. 2, fig. 4 or fig. 8, sieve plate device 7 includes that quantity is two bar plate 701, evenly distributed's sieve mesh 702 has all been seted up at two bar plate 701's top, two bar plate 701's opposite side fixedly connected with round bar 703, the surface of round bar 703 is provided with brush hair 704,

bar plate

701 and 8 fixed connection of first stock guide, through setting up sieve plate device 7, can carry out hierarchical screening to ceramic powder, unqualified ceramic powder can directly sieve away, improve the effect of screening, and under electric putter 6's drive, automatic cleaning can be realized to two bar plate 701, it is clean to need not artifical manual demolish, reduce the degree of difficulty of maintaining, improve clear efficiency, guarantee sieve plate device 7's screening effect.

Referring to fig. 8, the sliding grooves 501 are formed in two sides of the inner wall of the screening box 5, the sliding blocks 705 are fixedly connected to two sides of the strip plate 701 below, the sliding blocks 705 are located on the inner wall of the sliding grooves 501, the electric push rod 6 is fixedly connected to the inner bottom wall of the sliding grooves 501, the top of the electric push rod 6 is fixedly connected with the sliding blocks 705, the screen plate device 7 can be limited by the arrangement of the sliding blocks 705 and the sliding grooves 501, and the situation that the electric push rod 6 deviates when being started to realize self-cleaning is avoided.

Referring to fig. 2 or fig. 7, the reciprocating assembly 13 includes an L-shaped frame 1301, a second servo motor 1302 is fixedly connected to the right side of the L-shaped frame 1301, a cam 1303 is fixedly connected to an output shaft of the second servo motor 1302, and the cam 1303 is in contact with the connecting rod 502; activity mouth 102 has been seted up in the left side of equipment box 1, the left side fixedly connected with connecting rod 502 of screening case 5, connecting rod 502 runs through activity mouth 102 and extends to the outside of activity mouth 102, the interior roof fixedly connected with second spring 103 of activity mouth 102, the bottom and the connecting rod 502 fixed connection of second spring 103, through setting up reciprocal subassembly 13, can drive screening case 5 and realize the up-and-down motion, avoid ceramic powder to pile up on bar 701, improve the efficiency of screening, through setting up second spring 103, can be to the speed limit of reciprocal subassembly 13, it is too big to avoid screening case 5 to move the range under the drive of cam 1303, influence screening effect, the usable connecting rod 502 of activity mouth 102 simultaneously carries on spacingly to screening case 5, avoid taking place the skew when screening case 5 reciprocates, guarantee device's normal operating.

Referring to fig. 6, the limiting assembly 12 includes a limiting frame 1201, the limiting frame 1201 is fixedly connected with the right side of the equipment box 1, the inner bottom wall of the limiting frame 1201 is fixed and the first spring 1202 is fixed, the top of the first spring 1202 is fixedly connected with a limiting rod 1203, the limiting rod 1203 penetrates through the limiting frame 1201 and extends to the outside of the limiting frame 1201, the right side of the equipment box 1 is provided with a strip port 101, the right side of the screening box 5 is fixedly connected with a cross rod 1204, the cross rod 1204 penetrates through the strip port 101 and is fixedly connected with the limiting rod 1203, through the limiting assembly 12, the screening box 5 can be limited, the situation that the screening box 5 deviates when moving up and down is avoided, the first spring 1202 can play a speed-reducing effect, and the movement amplitude is prevented from being too large.

Referring to fig. 2 or 5, feed arrangement 2 includes circular pipe 202, circular pipe 202 runs through equipment box 1 and extends to the inside of equipment box 1, the inner wall fixedly connected with second funnel 203 of circular pipe 202, the inner wall fixedly connected with of circular pipe 202 is located the branch material awl 204 of second funnel 203 below, the inside of branch material awl 204 is provided with evenly distributed's heating pipe 201, through setting up feed arrangement 2, second funnel 203 can avoid the material to produce in circular pipe 202 and pile up, branch material awl 204 can disperse the material, it piles up to avoid the 3 surface production of reducing mechanism of material at, make reducing mechanism 3's crushing effect better, efficiency is higher, and heating pipe 201 can dry the material, avoid the material that contains moisture to carry out equipment box 1's inside, cause the poor problem of crushing effect.

The working principle of the invention is as follows: the material is put in from the feeding device 2, the material is firstly gathered by the second hopper 203, the heating pipe 201 is started, the material is scattered to the surface of the crushing device 3 in the equipment box 1 by the material distributing cone 204, the material can be prevented from being accumulated in the circular pipe 202 by the second hopper 203 by arranging the feeding device 2, the material can be dispersed by the material distributing cone 204, the material can be prevented from being accumulated on the surface of the crushing device 3, the crushing effect of the crushing device 3 is better, the efficiency is higher, the heating pipe 201 can dry the material, the problem of poor crushing effect caused by the fact that the material containing moisture is carried in the equipment box 1 is avoided, the first servo motor 304 in the crushing device 3 is started, the first servo motor 304 drives the rotating rods 301 to rotate through the gear 303, the adjacent two rotating rods 301 rotate relatively, the material is crushed by the crushing knife 302 on the surface, through the arrangement of the crushing device 3, crushing and screening can be integrated, the use performance of the device is improved, the rotating rods 301 are mutually staggered and crushed, the crushing effect is better, crushed materials are gathered by the first hopper 4 and then reach the surface of the sieve plate device 7, the reciprocating component 13 is started, the second servo motor 1302 rotates to drive the cam 1303 to rotate, the cam 1303 drives the connecting rod 502 to move up and down in the movable opening 102, the second spring 103 generates corresponding deformation, through the arrangement of the reciprocating component 13, the sieving box 5 can be driven to move up and down, ceramic powder is prevented from being accumulated on the strip-shaped plate 701, the screening efficiency is improved, through the arrangement of the second spring 103, the speed limit of the reciprocating component 13 can be realized, the phenomenon that the sieving box 5 moves too much under the driving of the cam 1303, the sieving effect is influenced, and meanwhile, the movable opening 102 can limit the sieving box 5 by using the connecting rod 502, avoid the deviation of the sieving box 5 when moving up and down, ensure the normal operation of the device, the limit component 12 starts working at the same time, the cross rod 1204 moves in the strip-shaped opening 101, drive the limit rod 1203 to compress the first spring 1202 in the limit frame 1201, through setting the limit component 12, the sieving box 5 can be limited, avoid the deviation of the sieving box 5 when moving up and down, and the first spring 1202 can play the effect of slowing down, avoid the movement amplitude to be too large, the qualified materials reach the surface of the lower strip-shaped plate 701 through the sieve pores 702 on the surface of the upper strip-shaped plate 701 in the sieving plate device 7, sieve for multiple times, avoid the blockage of the sieve pores 702, the qualified ceramic powder enters the collecting frame 14 through the sieve pores 702 on the surface of the lower strip-shaped plate 701, the unqualified ceramic powder with larger specification enters the feeding hopper 10 through the first guide plate 8, and is conveyed to the inside the feeding device 2 through the auger 9 and the second guide plate 11, realize the screening of smashing once more, through setting up auger 9, can realize the automatic feeding of bigger granule, smash again, full automation, intensity of labour is little, when the sieve plate device 7 needs to be cleared up, start electric putter 6, electric putter 6 moves upwards, drive slider 705 to move in spout 501, through setting up slider 705 and spout 501, can carry on the spacing to sieve plate device 7, avoid the emergence of skew when electric putter 6 starts to realize the self-cleaning, round bar 703 of upper and lower side enters into the corresponding sieve mesh 702 respectively, utilize brush hair 704 to clear up the inside of sieve mesh 702, through setting up sieve plate device 7, can carry on the hierarchical screening to ceramic powder, unqualified ceramic powder can be screened out directly, improve the effect of screening, and under the drive of electric putter 6, two strip shaped plates 701 can realize the self-cleaning, need not artifical manual dismantlement and clean, reduce the degree of difficulty of maintenance, improve clear efficiency, the screening effect of guarantee sieve device 7 when collecting the inside ceramic powder of frame 14 and need take out, utilizes handle 1501 to open side door 15, will collect frame 14 take out the clearance can, through setting up side door 15, can take out the ceramic powder of collecting in the frame 14, it is more convenient that the operation is got up, through setting up handle 1501, more convenient laborsaving when opening side door 15.

It should be noted that, in the above description, the heating pipe 201, the first servo motor 304, the electric push rod 6, the packing auger 9, the second servo motor 1302, and the like are all devices that are mature in application in the prior art, and the specific model can be selected according to actual needs, and meanwhile, the power supplied by the heating pipe 201, the first servo motor 304, the electric push rod 6, the packing auger 9, and the second servo motor 1302 can be supplied to a built-in power supply or a commercial power supply, and the specific power supply mode is selected according to circumstances and is not described herein.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A screening device for preparing dielectric ceramic powder comprises an equipment box (1), and is characterized in that: the top of the equipment box (1) is provided with a feeding device (2), the feeding device (2) penetrates through the equipment box (1) and extends to the inside of the equipment box (1), the left side of the equipment box (1) is provided with a crushing device (3), the crushing device (3) penetrates through the equipment box (1) and extends to the inside of the equipment box (1), the inner wall of the equipment box (1) is fixedly connected with a first funnel (4) positioned below the crushing device (3), the left side of the equipment box (1) is fixedly connected with a reciprocating component (13), the inner wall of the equipment box (1) is movably connected with a screening box (5), the right side of the equipment box (1) is fixedly connected with a limiting component (12), the left side of the screening box (5) penetrates through the equipment box (1) and is in contact with the reciprocating component (13), the right side of the screening box (5) penetrates through the screening box (5) and is fixedly connected with the limiting component (12), the inner bottom wall of equipment box (1) is provided with collection frame (14), right side fixedly connected with auger (9) of equipment box (1), the left side intercommunication of auger (9) has feeder hopper (10), the inner wall of screening case (5) is provided with sieve device (7), the right side fixedly connected with quantity of sieve device (7) is first stock guide (8) of two, first stock guide (8) run through equipment box (1) and extend to the top of feeder hopper (10), the left side intercommunication of auger (9) has second stock guide (11) that are located feeder hopper (10) top, second stock guide (11) are located the top of feed arrangement (2).

2. A sieving apparatus for dielectric ceramic powder preparation according to claim 1, characterized in that: reducing mechanism (3) include a plurality of dwang (301), every dwang (301) all rotate with the inner wall of equipment box (1) and be connected, every the equal fixedly connected with evenly distributed's in surface crushing sword (302), every of dwang (301) the left side of dwang (301) all runs through equipment box (1) and extends to the outside of equipment box (1), every the equal fixedly connected with gear (303), adjacent two in left side of dwang (301) gear (303) intermeshing connects, the rear the first servo motor (304) of left side fixedly connected with of gear (303).

3. A sieving apparatus for dielectric ceramic powder preparation according to claim 1, characterized in that: the front of equipment case (1) articulates there is quantity side door (15) of being two, the front fixedly connected with handle (1501) of side door (15).

4. A sieving apparatus for dielectric ceramic powder preparation according to claim 1, characterized in that: the sieve plate device (7) comprises two strip-shaped plates (701), the top of each strip-shaped plate (701) is provided with uniformly distributed sieve holes (702) and two opposite side fixedly connected with circular rods (703) of the strip-shaped plates (701), the surfaces of the circular rods (703) are provided with bristles (704), and the strip-shaped plates (701) are fixedly connected with a first material guide plate (8).

5. A screening apparatus for dielectric ceramic powder preparation according to claim 4, wherein: sliding grooves (501) are formed in two sides of the inner wall of the screening box (5), sliding blocks (705) are fixedly connected to two sides of the strip-shaped plate (701) below the inner wall, the sliding blocks (705) are located on the inner wall of the sliding grooves (501), electric push rods (6) are fixedly connected to the inner bottom wall of the sliding grooves (501), and the tops of the electric push rods (6) are fixedly connected with the sliding blocks (705).

6. A sieving apparatus for dielectric ceramic powder preparation according to claim 1, characterized in that: activity mouth (102) have been seted up to the left side of equipment case (1), the left side fixedly connected with connecting rod (502) of screening case (5), connecting rod (502) run through activity mouth (102) and extend to the outside of activity mouth (102), the interior roof fixedly connected with second spring (103) of activity mouth (102), the bottom and connecting rod (502) fixed connection of second spring (103).

7. A screening apparatus for dielectric ceramic powder preparation according to claim 6, wherein: the reciprocating assembly (13) comprises an L-shaped frame (1301), a second servo motor (1302) is fixedly connected to the right side of the L-shaped frame (1301), a cam (1303) is fixedly connected to an output shaft of the second servo motor (1302), and the cam (1303) is in contact with the connecting rod (502).

8. A sieving apparatus for dielectric ceramic powder preparation according to claim 1, characterized in that: the limiting assembly (12) comprises a limiting frame (1201), the limiting frame (1201) is fixedly connected with the right side of the equipment box (1), the inner bottom wall of the limiting frame (1201) is fixed to be refined and is provided with a first spring (1202), a limiting rod (1203) is fixedly connected to the top of the first spring (1202), the limiting rod (1203) penetrates through the limiting frame (1201) and extends to the outside of the limiting frame (1201), a strip-shaped opening (101) is formed in the right side of the equipment box (1), a transverse rod (1204) is fixedly connected to the right side of the screening box (5), and the transverse rod (1204) penetrates through the strip-shaped opening (101) and is fixedly connected with the limiting rod (1203).

9. A sieving apparatus for dielectric ceramic powder preparation according to claim 1, characterized in that: the feeding device (2) comprises a circular pipe (202), the circular pipe (202) penetrates through the equipment box (1) and extends to the inside of the equipment box (1), the inner wall of the circular pipe (202) is fixedly connected with a second funnel (203), the inner wall of the circular pipe (202) is fixedly connected with a material distribution cone (204) located below the second funnel (203), and heating pipes (201) which are uniformly distributed are arranged inside the material distribution cone (204).