CN216880334U - Variable speed sieve device with quick change function - Google Patents

Abstract

The utility model discloses a variable speed screening device with a quick change function, which comprises a rack, a screen, a discharging mechanism and a screen frame matched with the screen, a crank block type transmission mechanism connected with the screen frame, an explosion-proof variable frequency power mechanism connected with the crank block type transmission mechanism and arranged at the bottom of the rack, and an elastic quick lock mechanism radially penetrating and arranged on the screen frame, wherein a screen supporting plate matched with the elastic quick lock mechanism is fixed on the inner side of the screen frame, guide wheel guide rail assemblies are in bilateral symmetry transmission connection on the outer side of the screen frame, and the guide wheel guide rail assemblies are arranged at the top of the rack. The utility model greatly improves the safety and the efficiency of the whole operation and realizes the quick replacement of the screens with different specifications.

Description

Variable speed sieve device with quick change function

Technical Field

The utility model relates to the technical field of material screening, in particular to a variable-speed material screening device with a quick-change function.

Background

The material screening is an important link in the industrial and agricultural production process, the process that the scattered materials are divided into different particle sizes through one or more layers of screen surfaces is called material screening, and the materials smaller than the size of the screen holes penetrate through the screen holes and are called undersize products; material larger than the mesh size is continuously discharged from the screening surface and is referred to as oversize product. The initial material screening is performed by shaking the screen manually, however, the operation method has low efficiency and high labor intensity, and cannot meet the requirement of mass production operation.

In order to solve the problems, the Chinese patent publication No. CN 207430691U discloses an electric screening device with adjustable speed, which also comprises a bearing support frame, a stepping motor, a slider-crank mechanism, a screen frame and a discharge limit frame, wherein the periphery of the screen is locked on the screen frame through a pressing sheet, the crank-slider mechanism comprises two slider components, a crank and a transmission rod, the two slider components are arranged on the two main supporting rods, the two sliding block components are symmetrically arranged in parallel, the bottom of the screen frame is fixed on the two sliding block components, the crank is fixed on the rotating shaft of the stepping motor, one end of the transmission rod is connected with the crank, the other end of the transmission rod is connected with the screen frame, the stepping motor enables the screen frame to move back and forth on the sliding block assembly through the crank sliding block mechanism.

Although through slider-crank mechanism and step motor's setting among this prior art, make the screen cloth frame can carry out the back-and-forth movement, but the screen cloth frame among this prior art directly sets up in slider assembly's top, and its operation stationarity is general, and holistic operation security is general, and screen cloth among this prior art is fixed through the compact heap with the screen cloth frame simultaneously, and its connection reliability is general, does not possess the function of quick dismantlement installation yet, can't change the screen cloth of different specifications high-efficiently, and the operating efficiency is low.

For this reason, a new technical solution is required to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a speed-changing screening device with a quick-change function, and aims to solve the technical problems that the operation stability of a screen frame of the conventional speed-adjustable screening device in the background art is general, the connection reliability with a screen is general, screens with different specifications cannot be quickly and efficiently replaced, the overall operation safety is general, and the operation efficiency is low.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a speed-changing screening device with a quick-change function comprises a frame, a screen, a discharging mechanism and a screen frame which are matched with the screen, a crank block type transmission mechanism connected with the screen, an explosion-proof variable frequency power mechanism connected with the crank block type transmission mechanism, and an elastic quick-locking mechanism which radially penetrates through and is installed on the screen frame, wherein a screen supporting plate matched with the elastic quick-locking mechanism is fixed on the inner side of the screen frame, the elastic quick-locking mechanism comprises at least four quick-locking components, the quick-locking components are bilaterally symmetrically arranged and respectively comprise a cylindrical shell and a lock tongue in a stepped structure, the cylindrical shell is radially installed on the screen frame, the end part of the front end of the cylindrical shell is flush with the inner surface of the screen frame, the lock tongue coaxially penetrates through the cylindrical shell, and the lock tongue comprises a cylindrical part and a protruding part which is integrally arranged at the middle position of the periphery of the cylindrical part, the cylindrical shell is provided with a small-diameter inner cavity matched with the cylindrical part and a large-diameter inner cavity matched with the convex part, the small-diameter inner cavity is integrally communicated with the front end of the large-diameter inner cavity, the cylindrical part is sleeved with a return spring, the rear end cover of the cylindrical shell is provided with an end cover, the return spring is arranged between the convex part and the end cover and is arranged in the large-diameter inner cavity, the end cover is provided with a central through hole for the cylindrical part to pass through, the front end of the cylindrical part is provided with a wedge-shaped end part matched with the screen mesh, the rear end of the cylindrical part is connected with a rotating handle, the left side and the right side of the central through hole are symmetrically provided with horizontal transverse grooves matched with the rotating handle, the guide wheel and guide rail assemblies are in bilateral symmetry transmission connection with the outer side of the screen frame, the guide wheel and guide rail assemblies are arranged at the top of the frame, and the explosion-proof variable-frequency power mechanism is arranged at the bottom of the frame;

furthermore, the explosion-proof variable-frequency power mechanism comprises an explosion-proof motor arranged at the bottom of the frame and a gear reducer in transmission connection with a belt wheel of the explosion-proof motor, the discharging mechanism comprises a conical hopper and a discharging groove, the conical hopper is arranged below the screen, the conical hopper is fixedly connected with the screen frame through a screen supporting plate, the discharging groove is arranged below an outlet of the conical hopper in a matching manner, the discharging groove is obliquely arranged on the frame and is positioned above the gear reducer, the crank block type transmission mechanism comprises two flywheels, the flywheels are arranged in bilateral symmetry and are respectively and rotatably arranged at two ends of an output shaft of the gear reducer, connecting rods are respectively connected between the flywheels and the screen frame, the connecting rods are arranged at the bottom of the screen frame in the bilateral symmetry manner, and connecting pins are respectively connected between the flywheels and the connecting rods and between the connecting rods and the screen frame, the guide wheel and guide rail assembly comprises two horizontal guide rails which are symmetrically arranged up and down, a guide wheel which slides between the horizontal guide rails, a connecting bearing and a framework oil seal which are arranged on the inner side of the guide wheel, and a horizontal shaft which coaxially penetrates through the inner side of the connecting bearing, the guide wheel, the framework oil seal and the horizontal shaft jointly form a sealed cavity, a square pipe assembly is symmetrically fixed on the left and right of the top of the frame and comprises two horizontal square pipes, the horizontal square pipes are symmetrically arranged up and down and are fixedly connected with the end parts of the two ends, a vertically arranged mounting bolt is connected between the horizontal guide rails and the horizontal square pipes, the horizontal guide rails are fixed on the square pipes in a one-to-one correspondence manner through the mounting bolts, an oil cup is arranged at the end part of each horizontal shaft and is communicated with the sealed cavity, and a connecting check ring is arranged between the connecting bearing and the horizontal shaft, the horizontal axis is connected with the connecting bearing through a connecting retainer ring, the guide wheel is connected with the screen frame through the horizontal axis, and the other end of the horizontal axis is sleeved with a nut for fixing the screen frame.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the guide wheel guide rail assembly is connected to the outer side of the screen frame in a transmission manner, so that the guide wheel guide rail assembly is arranged in a surrounding manner relative to the screen frame, and the guide wheel guide rail assembly not only has a function of guiding the screen frame but also has a function of protecting and limiting the screen frame when the screen frame moves back and forth due to the synergistic effect of the crank block type transmission mechanism and the explosion-proof type variable frequency power mechanism, thereby avoiding the unexpected conditions of side turning and the like when the screen frame moves back and forth due to the variable speed, greatly improving the operation stability of the screen frame, improving the operation safety, and realizing the efficient replacement of the screen meshes with different specifications by the matching arrangement of the elastic quick lock mechanism and the screen mesh support plate and utilizing the adjustable telescopic function of the elastic quick lock mechanism and the support function of the screen mesh support plate while further improving the connection reliability of the screen meshes and the screen frame, the separation of materials with different particle sizes can be met, and the overall operation efficiency is greatly improved; in addition, the screen frame is driven by the crank block type transmission mechanism through the matching arrangement of the explosion-proof variable-frequency power mechanism, the screen frame has an emergency return function, and has an explosion-proof effect while moving back and forth through speed change of the guide wheel guide rail assembly;

2. the guide wheel guide rail assembly comprises two horizontal guide rails which are symmetrically arranged up and down, the guide wheels slide between the two horizontal guide rails, so that the horizontal guide rails are arranged in a surrounding manner relative to the guide wheels, the horizontal guide rails are fixed on a square pipe in a one-to-one correspondence manner through mounting bolts, the square pipe is fixed on a rack, and the sliding stability and safety of the guide wheels are further improved through the synergistic action of the square pipe and the horizontal guide rails, so that the moving stability of a screen frame is improved, and the safety of the whole operation is finally ensured;

3. the elastic quick lock mechanism comprises a cylindrical shell, a lock tongue, a return spring, an end cover and a rotary handle, wherein when the screen is installed, the screen slides downwards along the inner surface of a screen frame, so that the return spring is automatically compressed by moving downwards along the wedge-shaped end part of the lock tongue, the lock tongue is retracted into the cylindrical shell until the screen is placed on a screen support plate, the lock tongue is reset through the return spring to lock the screen, when the screen is disassembled, the rotary handle is completely pulled out from a horizontal transverse groove of the end cover and rotates clockwise by 90 degrees, the rotary handle is abutted against the outer surface of the end cover, the lock tongue keeps the retracted state to realize internal locking, the screen on the screen support plate is lifted out of the screen frame, then the rotary handle rotates anticlockwise by 90 degrees, the lock tongue is reset through the return spring to wait for the next installation, and the cooperation of the cylindrical shell, the lock tongue, the return spring, the end cover and the rotary handle and the screen support plate is achieved, the quick replacement and quick installation of the screen meshes with different specifications are realized, and the connection stability and safety of the screen frame and the screen meshes are ensured;

4. according to the utility model, the discharging efficiency after screening is further improved through the inclined arrangement of the discharging groove, so that the overall operation efficiency is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic structural view of a guide rail assembly of the guide wheel of the present invention;

FIG. 4 is a first schematic flow chart of the operation of the elastic quick-lock mechanism (screen installation) of the present invention;

FIG. 5 is a schematic view of the working principle of FIG. 4;

FIG. 6 is a second schematic flow chart of the operation of the elastic quick locking mechanism of the present invention (screen cloth removal);

FIG. 7 is a schematic view of the working principle of FIG. 6;

in the figure: 1. the device comprises a frame, 2, a screen, 3, a screen frame, 4, a screen supporting plate, 5, a quick lock assembly, 51, a cylindrical shell, 511, a small-diameter inner cavity, 512, a large-diameter inner cavity, 52, a bolt, 521, a cylindrical part, 522, a bulge part, 523, a wedge-shaped end part, 53, a return spring, 54, an end cover, 541, a central through hole, 542, a horizontal transverse groove, 55, a rotating handle, 6, an explosion-proof motor, 7, a gear reducer, 8, a conical hopper, 9, a discharge chute, 10, a flywheel, 11, a connecting rod, 12, a connecting pin, 13, a horizontal guide rail, 14, a guide wheel, 15, a connecting bearing, 16, a framework oil seal, 17, an oil cup, 18, a connecting retainer ring, 19, a nut, 20, a horizontal shaft, 21, a horizontal square pipe, 22 and a mounting bolt.

Detailed Description

The following examples are intended to further illustrate the utility model and are not intended to limit the application of the utility model.

Please refer to fig. 1-7, which show a speed-changing material sieving device with a quick-changing function, comprising a frame 1, wherein square tube assemblies are respectively fixed on the left and right sides of the top of the frame 1, each square tube assembly is composed of two horizontal square tubes 21 arranged in an up-down symmetrical manner, two ends of each horizontal square tube 21 are connected together, one opposite side of each horizontal square tube 21 is respectively fixedly connected with a horizontal guide rail 13, a vertically arranged mounting bolt 22 is connected between each horizontal guide rail 13 and the corresponding horizontal square tube 21, each horizontal guide rail 13 is fixed on the corresponding horizontal square tube 21 through the corresponding mounting bolt 22, a guide wheel 14 is slidably arranged between the two horizontal guide rails 13 arranged in the up-down symmetrical manner, a connecting bearing 15 and a framework oil seal 16 are arranged on the inner side of each guide wheel 14, a horizontal shaft 20 coaxially penetrates through the inner side of the connecting bearing 15, the guide wheel 14, the framework oil seal 16 and the horizontal shaft 20 form a sealed chamber together, a connecting retainer ring 18 is arranged between the connecting bearing 15 and a horizontal shaft 20, the horizontal shaft 20 is connected with the connecting bearing 15 through the connecting retainer ring 18, an oil cup 17 communicated with a sealing cavity is arranged at one end of the horizontal shaft 20, lubricating oil is filled into the sealing cavity through the oil cup 17, the connecting bearing 15 can be lubricated, the service life of the connecting bearing 15 is prolonged, and the other end of the horizontal shaft 20 is fixedly connected with the sieve frame 3 and is sleeved with a nut 19 for fixing the sieve frame 3; the bottom of the frame 1 is provided with an explosion-proof motor 6 and a gear reducer 7, the explosion-proof motor 6 is in transmission connection with the gear reducer 7 through a belt wheel, two ends of an output shaft of the gear reducer 7 are respectively and rotatably provided with a flywheel 10, a connecting rod 11 is respectively connected between the flywheel 10 and the sieve frame 3, the connecting rods 11 are symmetrically arranged at the bottoms of the left side and the right side of the sieve frame 3, and connecting pins 12 are respectively connected between the flywheel 10 and the connecting rod 11 and between the connecting rod 11 and the sieve frame 3;

further, a screen support plate 4 is fixed on the inner side of the screen frame 3, a screen 2 is arranged on the screen support plate 4, a conical hopper 8 and a discharge chute 9 are arranged below the screen 2, the conical hopper 8 is fixedly connected with the screen frame 3 through the screen support plate 4, the discharge chute 9 is arranged right opposite to an outlet of the conical hopper 8, the discharge chute 9 is obliquely arranged on the frame 1 and is positioned above the gear reducer 7, the screen frame 3 is provided with a quick assembly 5 matched with the screen support plate 4, the quick assembly 5 is arranged in bilateral symmetry and is provided with two on each side, the quick assembly 5 comprises a cylindrical shell 51, a lock tongue 52, an end cover 54 and a rotary handle 5, the cylindrical shell 51 radially penetrates through and is arranged on the screen frame 3, the front end of the cylindrical shell is flush with the inner surface of the screen frame 3, the lock tongue 52 is in a stepped structure and coaxially penetrates through the cylindrical shell 51, and the lock tongue 52 comprises a cylindrical part 521 and a protruding part 522, the cylindrical shell 51 is provided with a small-diameter inner cavity 511 matched with the cylindrical part 521 and a large-diameter inner cavity 512 matched with the boss part 522, the small-diameter inner cavity 511 is integrally communicated with the front end of the large-diameter inner cavity 512, the front end of the cylindrical part 521 is provided with a wedge-shaped end part 523 matched with the screen 2, the boss part 522 is integrally arranged at the middle position of the periphery of the cylindrical part 521, a return spring 53 is arranged between the boss part 522 and an end cover 54, the return spring 53 is sleeved on the cylindrical part 521 and arranged in the large-diameter inner cavity 512, the end cover 54 is covered at the rear end of the cylindrical shell 51 and is provided with a central through hole 541 for the cylindrical part 521 to pass through, the rotating handle 55 is connected to the rear end of the cylindrical part 521, and horizontal transverse grooves 542 matched with the rotating handle 55 are symmetrically arranged at the left side and the right side of the central through hole 541.

When the sieve frame is in work, the explosion-proof motor 6 drives the two flywheels 10 to synchronously rotate through the gear reducer 7, the flywheels 10 drive the sieve frame 3 to do reciprocating linear motion along the horizontal guide rail 13 through the connecting rod 11, so that the sieve meshes 2 in the sieve frame 3 are jointly sieved back and forth, and the sieving of materials is completed; through the arrangement of a crank block type transmission mechanism consisting of a flywheel 10 and a connecting rod 11 (the included angle of the polar positions of the mechanism is more than 0), the stroke speed ratio coefficient of the mechanism is more than 1, so that the screen frame 3 has a quick return function, the reciprocating speeds of materials in the screen 2 are different, and the screening efficiency of the materials is higher;

when the screen 2 is installed, the screen 2 is directly hoisted to slide downwards along the inner side of the screen frame 3, in the sliding process, the screen 2 moves downwards along the wedge-shaped end 523 of the lock tongue 52, the return spring 53 is automatically compressed, so that the lock tongue 52 comprises the wedge-shaped end 523 which is retracted to the inside of the cylindrical shell 51 until the screen 2 is placed on the screen support plate 4, the lock tongue 52 is reset through the return spring 53, the wedge-shaped end 523 of the lock tongue 52 extends out of the cylindrical shell 51, and the screen 2 is limited and locked from the upper part; when the screen 2 is dismounted, the rotating handle 55 is manually pulled, after the rotating handle 55 completely comes out of the horizontal transverse groove 542 of the end cover 54, the rotating handle 55 is rotated clockwise by 90 degrees to abut against the outer surface of the end cover 54 (at this time, the rotating handle 55 is vertically arranged relative to the horizontal transverse groove 542), so that the locking tongue 52 comprises the wedge-shaped end portion 523 and is kept in a retracted state, then the screen 2 is lifted out of the inner side of the screen frame 3, then the rotating handle 55 is rotated counterclockwise by 90 degrees, the rotating handle 55 is returned into the horizontal transverse groove 542 of the end cover 54, the locking tongue 52 is reset, and the wedge-shaped end portion 523 of the locking tongue 52 extends out of the cylindrical shell 51 to wait for the next mounting.

Claims (9)

1. The utility model provides a variable speed sieve material device with quick change function, includes frame, screen cloth, discharge mechanism and bank of screens matched with, the slider-crank formula drive mechanism that is connected with the bank of screens, its characterized in that still includes and is connected with slider-crank formula drive mechanism and installs in the explosion-proof type variable frequency power unit of frame bottom and radially runs through and install the quick latch mechanism of elasticity on the bank of screens, the inboard of bank of screens is fixed with the screen cloth backup pad with quick latch mechanism matched with of elasticity, the outside bilateral symmetry transmission of bank of screens is connected with the leading wheel guided way subassembly, the leading wheel guided way subassembly sets up in the top of frame.

2. The variable-speed screening device with the quick-change function according to claim 1, wherein the explosion-proof variable-frequency power mechanism comprises an explosion-proof motor mounted at the bottom of the frame and a gear reducer in transmission connection with a belt wheel of the explosion-proof motor, the discharging mechanism comprises a conical hopper and a discharging chute, the conical hopper is arranged below the screen, the conical hopper is fixedly connected with the screen frame through a screen supporting plate, the discharging chute is arranged below an outlet of the conical hopper in a matching manner, and the discharging chute is obliquely mounted on the frame and located above the gear reducer.

3. The speed-changing material sieving device with the quick-changing function according to claim 2, wherein the crank block type transmission mechanism comprises two flywheels, the flywheels are arranged in bilateral symmetry and are respectively rotatably mounted at two ends of an output shaft of the gear reducer, a connecting rod is respectively connected between each flywheel and the sieve frame, the connecting rods are arranged at the bottom of the sieve frame in bilateral symmetry, and connecting pins are respectively connected between each flywheel and the connecting rod and between each connecting rod and the sieve frame.

4. The speed-changing material sieving device with the quick-changing function according to claim 3, wherein the guide wheel and guide rail assembly comprises two horizontal guide rails which are arranged up and down symmetrically, a guide wheel which slides between the horizontal guide rails, a connecting bearing and a framework oil seal which are arranged on the inner side of the guide wheel, and a horizontal shaft which is coaxially arranged on the inner side of the connecting bearing in a penetrating manner, and the guide wheel, the framework oil seal and the horizontal shaft together form a sealing chamber.

5. The variable speed screening device with the quick change function according to claim 4, wherein a square pipe assembly is fixed to the top of the frame in a bilateral symmetry manner, the square pipe assembly comprises two horizontal square pipes, the horizontal square pipes are arranged in an up-down symmetry manner, end portions of the two ends of the horizontal square pipes are fixedly connected, a vertically arranged mounting bolt is connected between each horizontal guide rail and the corresponding horizontal square pipe, and the horizontal guide rails are fixed to the square pipes in a one-to-one correspondence manner through the mounting bolts.

6. The variable speed material sieving device with the quick change function according to claim 4, wherein an oil cup is arranged at one end of the horizontal shaft, the oil cup is communicated with the sealing chamber, a connecting retainer ring is arranged between the connecting bearing and the horizontal shaft, the horizontal shaft is connected with the connecting bearing through the connecting retainer ring, the guide wheel is connected with the sieve frame through the horizontal shaft, and a nut for fixing the sieve frame is sleeved at the other end of the horizontal shaft.

7. The speed-changing screening device with the quick-changing function according to claim 1, wherein the elastic quick-locking mechanism comprises at least four quick-locking components, the quick-locking components are arranged in a bilateral symmetry mode and respectively comprise a cylindrical shell and a lock tongue in a stepped structure, the cylindrical shell is radially installed on the screen frame, the end portion of the front end of the cylindrical shell is flush with the inner surface of the screen frame, the lock tongue coaxially penetrates through the cylindrical shell, the lock tongue comprises a cylindrical portion and a protruding portion integrally arranged in the middle position of the periphery of the cylindrical portion, a reset spring is sleeved on the cylindrical portion, an end cover is arranged on the rear end cover of the cylindrical shell, and the reset spring is arranged between the protruding portion and the end cover.

8. The speed-changing material sieving device with the quick-changing function according to claim 7, characterized in that the end cover is provided with a central through hole for the cylindrical part to pass through, the front end of the cylindrical part is formed with a wedge-shaped end part matching with the screen mesh, the rear end of the cylindrical part is connected with a rotating handle, and the left and right sides of the central through hole are symmetrically provided with horizontal transverse grooves matching with the rotating handle.

9. The speed-changing material sieving device with the quick-changing function according to claim 8, wherein the cylindrical housing has a small-diameter inner cavity matched with the cylindrical part and a large-diameter inner cavity matched with the convex part, the small-diameter inner cavity is integrally communicated with the front end of the large-diameter inner cavity, and the return spring is arranged in the large-diameter inner cavity.

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