CN220661242U - Multi-screw continuous extrusion production line for dry gypsum hollow lath - Google Patents

Abstract

The utility model discloses a dry-method gypsum hollow ribbon board multi-screw continuous extrusion production line, which relates to the technical field of gypsum building material molding and comprises a frame body, an extrusion box, a die and a plurality of screw shafts, wherein the extrusion box and the die are sequentially arranged on the frame body from left to right; the left side of the frame body is provided with a driving device; a gypsum-based material continuous supply device is connected above the extrusion box on the frame, the right end of the extrusion box is provided with an extrusion box discharge hole, and the extrusion box discharge hole is connected with a die inlet of a die; a cover plate is arranged at the right end of the top surface of the extrusion box; the left end of each screw shaft penetrates through the left side wall of the extrusion box and is connected with the driving device, and the discharge port of the gypsum-based material continuous feeding device is connected with the feed port of the extrusion box; the right end of each screw shaft passes through the die inlet and into the die. The multi-screw continuous extrusion device for the dry gypsum hollow lath can solve the problems of uneven density distribution, unstable quality and inconvenient cleaning of products caused by high viscosity and poor fluidity of materials.

Description

Multi-screw continuous extrusion production line for dry gypsum hollow lath

Technical Field

The utility model relates to the technical field of gypsum building material molding, in particular to a dry-method gypsum hollow ribbon board multi-screw continuous extrusion production line.

Background

The accumulation amount of the industrial by-product gypsum in China is very large, and the huge comprehensive utilization and environmental treatment pressure reaching 5-8 hundred million tons at present are particularly high. One way of applying gypsum in building materials is to manufacture gypsum boards, the traditional manufacturing method of gypsum boards is to stir gypsum and other raw material mixed water and then pour the gypsum and other raw material mixed water into a mould for molding, and the building gypsum products produced by the traditional pouring method have high water content, need to be dried, have high production cost and have long production period.

There are also extrusion processes for producing building gypsum products such as gypsum laths, which employ a distribution device to feed gypsum-based materials to the gypsum lath extrusion line. The gypsum-based material containing the desulfurized gypsum has strong viscosity and poor fluidity, and is easy to cause uneven feeding and poor extrusion efficiency, so that the density distribution of the manufactured building gypsum product is uneven and the quality is unstable.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a multi-screw continuous extrusion device for a dry gypsum hollow slat, which can solve the problems of uneven product density distribution, unstable quality and inconvenient cleaning caused by high material viscosity and poor fluidity.

The technical scheme adopted by the utility model is as follows.

The multi-screw continuous extrusion production line for the dry gypsum hollow lath is characterized in that: comprises a frame body, an extrusion box, a die and a plurality of screw shafts, wherein the extrusion box, the die and the screw shafts are sequentially arranged on the frame body from left; the left side of the frame body is provided with a driving device; a gypsum-based material continuous supply device is connected above the extrusion box on the frame;

the screw shafts are longitudinally arranged, the left end of each screw shaft penetrates through the left side wall of the extrusion box and is connected with the driving device, and spiral blades are arranged on the radial outer peripheral surface of the part of each screw shaft positioned in the extrusion box; a cover plate is arranged at the right end of the top surface of the extrusion box;

the die comprises a die cover and a die cover bracket, and the die cover is movably connected with the die cover bracket; the left end of the die is provided with an inlet, and the right end of the die is provided with an outlet;

the right end of the extrusion box is provided with an extrusion box discharge hole which is connected with a die inlet of the die; the right end of the cover plate is contacted with the die cover, and the left end of the cover plate is contacted with the bottom end of the gypsum-based material continuous feeding device, so that an extrusion box feed inlet is formed in front of the cover plate on the top of the extrusion box; the discharge port of the gypsum-based material continuous feeding device is connected with the feed port of the extrusion box; the right end of each screw shaft passes through the die inlet and into the die.

The beneficial effects of the utility model are as follows: when the gypsum board extruding device is used, materials are continuously conveyed to the feeding hole of the extruding box through the gypsum-based material continuous feeding device, and are pushed to the die 3 through the screw shaft and extruded to form the gypsum board. The die cover is movably connected with the die cover bracket, and can be detached after the extrusion operation is completed, so that the residual materials in the die cover bracket can be cleaned, and the next operation is facilitated. The die cover bracket can be used for continuously detaching the cover plate after the die cover can be detached after the extrusion operation is finished, cleaning residual materials on the screw shaft in a larger extrusion force area below the cover plate of the extrusion box, preventing the residual materials from being solidified into blocks, and facilitating the next operation.

As a preferable technical scheme, the gypsum-based material continuous feeding device comprises a conveying material box, wherein the top end of the conveying material box is provided with a feeding hole of the conveying material box, the bottom end of the conveying material box is provided with a discharging hole of the conveying material box, a cavity is arranged between the feeding hole of the conveying material box and the discharging hole of the conveying material box, and four rotating shafts are longitudinally arranged in the cavity; two toothed plates with the same size are longitudinally arranged on the radial outer circumferential surface of each rotating shaft, the distance between the shaft ends of the toothed plates, which are far away from the rotating shafts, and the central axes of the rotating shafts is defined as L, and the two toothed plates are symmetrical along the central axes of the rotating shafts; the left side wall and the right side wall of the conveying material box are longitudinally provided with two arc-shaped grooves for the toothed plates to pass through; the centers of the four rotating shafts are positioned at four corners of a square, and the side length of the square is 2L; the distance between the concave surface of each arc-shaped groove and the central axis of the nearest rotating shaft is L; each rotating shaft is connected with a rotating shaft driving device; the bottom of the right side wall of the conveying material box is contacted with the cover plate. By adopting the technical scheme, the centers of the four rotating shafts are positioned at four corners of a square, when materials enter from the feeding hole of the conveying material box, the materials are continuously extruded by the toothed plate on the rotating shafts along with the rotation of the four rotating shafts, are continuously extruded from the discharging hole of the conveying material box and enter the feeding hole of the extruding box, and can be continuously conveyed to the feeding hole of the extruding box of the building material production line under pressure, so that the problems that gypsum-based materials containing desulfurized gypsum are strong in viscosity and poor in fluidity and are difficult to be uniformly output are solved.

As the preferable technical scheme, the left side wall of the conveying material box is movably connected with the front side wall of the conveying material box and the rear side wall of the conveying material box, and the right side wall of the conveying material box is movably connected with the front side wall of the conveying material box and the rear side wall of the conveying material box. By adopting the technical scheme, the front side wall of the conveying material box and the rear side wall of the conveying material box can be detached after the material conveying is finished, so that the material of each toothed plate and each rotating shaft can be cleaned conveniently.

As the preferable technical scheme, four rotating shaft through holes are longitudinally formed in the front side wall and the rear side wall of the conveying material box respectively, and two ends of each rotating shaft respectively penetrate through the nearest rotating shaft through holes in the front side wall and the rear side wall of the conveying material box.

The front end of each rotating shaft is provided with a first driving gear, a guide gear is respectively arranged between two first driving gears which are positioned on the left side of the centroid of the front side wall of the conveying material box and positioned on the right side of the centroid of the front side wall of the conveying material box, each guide gear is meshed with two nearest first driving gears, the rear ends of two rotating shafts which are positioned on the lower side of the centroid of the rear side wall of the conveying material box or the rear ends of two rotating shafts which are positioned on the upper side of the centroid of the rear side wall of the conveying material box are respectively provided with a second driving gear, the two second driving gears are meshed, one second driving gear is connected with a rotating shaft driving motor which is arranged on the rear side of the conveying material box,

or,

the rear end of each rotating shaft is provided with a first driving gear, a guide gear is respectively arranged between two first driving gears which are positioned on the left side of the centroid of the rear side wall of the conveying material box and on the front side wall of the conveying material box and positioned on the right side of the centroid of the rear side wall of the conveying material box, each guide gear is meshed with two nearest first driving gears, the rear ends of two rotating shafts which are positioned on the lower side of the centroid of the front side wall of the conveying material box or the rear ends of two rotating shafts which are positioned on the upper side of the centroid of the front side wall of the conveying material box are respectively provided with a second driving gear, and the two second driving gears are meshed, wherein one second driving gear is connected with a rotating shaft driving motor which is arranged on the front side of the conveying material box. According to the technical scheme, the kinetic energy supply for conveying the materials can be realized by only using one motor, and the device is simple in structure and convenient to control.

As the preferable technical scheme, the front side surface of the front side wall of the conveying material box and the rear side surface of the rear side wall of the conveying material box are respectively provided with a gear protection cover; the feed inlet of the conveying material box is connected with the feed hopper. By adopting the technical scheme, the gear protection cover can protect the first driving gear, the guide gear and the second driving gear. The feeding hopper is arranged, and the material conveying is relatively uniform.

As a preferable technical scheme, each rotating shaft through hole is coaxially connected with a support bearing, and two ends of each rotating shaft respectively pass through the support bearing nearest to the rotating shaft through hole.

As a preferable technical scheme, the section of the screw shafts, which is positioned in the inner part of the die and is perpendicular to the central axis of the screw shafts, is round; the right end of each screw located in the inner part of the die has the same diameter, and the rest part gradually increases from left to right. By adopting the technical scheme, the extrusion effect is good.

As the preferable technical scheme, the die cover bracket is movably connected with the frame body. By adopting the technical scheme, the die cover bracket is convenient to detach quickly.

As a preferable technical scheme, the number of the screw shafts is four; the driving device comprises three driving motors which are transversely arranged at the left side of the frame body; among the four screw shafts, the screw shaft positioned at the forefront is connected with the drive motor positioned at the forefront, the screw shaft positioned at the rearmost is connected with the drive motor positioned at the rearmost, the left sides of the extrusion boxes on the two screw shafts positioned in the middle are respectively and coaxially provided with a transmission gear, the two transmission gears are meshed, and one screw shaft of the two screw shafts positioned in the middle is connected with the drive motor positioned in the middle. By adopting the technical scheme, four screw shafts can be driven by adopting three driving motors, the three driving motors are reasonably distributed, the problem that the power distribution is difficult to synchronize by using a single motor is solved, and the energy consumption is low.

As a preferable technical scheme, in the four screw shafts, a first output gear is arranged at the left end of the screw shaft positioned at the forefront, and the first output gear is connected with a first power output gear of the drive motor positioned at the forefront in the three drive motors through a first transmission chain.

The left end of the screw shaft positioned at the rearmost is provided with a second output gear which is connected with a second power output gear of the drive motor positioned at the forefront and the rear of the three drive motors through a second transmission chain.

The driving motor positioned in the middle of the three driving motors is coaxially connected with one of the two screw shafts with four screw shafts positioned in the middle.

As the preferable technical proposal, a gear box is arranged on the left side of the extrusion box on the frame body, and each screw shaft passes through the gear box; each transmission gear is positioned in the gear box; four first screw shaft through holes are longitudinally arranged on the right side wall of the gear box, four second screw shaft through holes are longitudinally arranged on the left side wall of the gear box, and the central axis of each first screw shaft through hole is in the same straight line with the central axis of the nearest second screw shaft through hole; the two ends of each screw shaft pass through the first screw shaft through hole and the second screw shaft through hole which are nearest to the screw shafts; the top end of the gear box is provided with a gear box cover. By adopting the technical scheme, the parallelism of the four screw shafts is convenient to ensure.

As a preferred embodiment, the screw shaft includes a screw shaft first portion, a screw shaft second portion, and a screw shaft third portion coaxially disposed.

Four third screw shaft through holes are longitudinally arranged on the left side wall of the extrusion box, and the central axis of each third screw shaft through hole is in the same straight line with the central axis of the nearest first screw shaft through hole.

The two ends of the first part of each screw shaft pass through the first screw shaft through hole and the second screw shaft through hole closest to the first part of each screw shaft.

Each screw shaft second portion passes through the third screw shaft through hole and is connected with the screw shaft first portion nearest to the third screw shaft through hole; the radial outer peripheral surface of each screw shaft second portion is provided with helical blades. The third portion of the screw shaft is connected to the second portion of the screw shaft nearest thereto.

The first part of the screw shaft positioned at the forefront is connected with the drive motor positioned at the forefront, and the first part of the screw shaft positioned at the rearmost is connected with the drive motor positioned at the rearmost; the two screw shaft first parts positioned in the middle are coaxially provided with transmission gears respectively in the extrusion boxes, the two transmission gear boxes are meshed, and one screw shaft first part in the two screw shaft first parts positioned in the middle is connected with a driving motor positioned in the middle; in the four screw shafts, a first output gear is arranged at the left end of a first part of the screw shaft positioned at the forefront; the left end of the first part of the screw shaft positioned at the rearmost is provided with a second output gear. With this solution, it is easy to replace the second part of the screw shaft, since the screw blade is vulnerable.

As a preferable technical scheme, the first screw shaft through holes are provided with first screw bearings, the second screw shaft through holes are provided with second screw bearings, and the first parts of the screw shafts are sleeved on the first screw bearings and the second screw bearings closest to the first screw shaft through holes.

The right end of each screw shaft first part is coaxially provided with a first mounting hole, and the left end of each screw shaft second part is inserted into the first mounting hole nearest to the screw shaft second part and is connected with the first mounting hole in a key manner; the right end of the second part of each screw shaft is coaxially provided with a second mounting hole, and the left end of the third part of each screw shaft is connected with the second mounting hole nearest to the left end of the third part of each screw shaft; the left end of the third part of each screw shaft is in threaded connection or key connection with the second mounting hole nearest to the third part; the section of the third part of the screw shaft, which is positioned in the die and is perpendicular to the central axis of the third part of the screw shaft, is a circle; the diameter of the right end of the third part of each screw shaft, which is positioned in the inner part of the die, is the same, and the diameters of the rest parts are gradually increased from left to right. With this solution, it is easy to replace the second part of the screw shaft, since the screw blade is vulnerable.

As a preferable technical scheme, a plurality of vertical plates are vertically connected to the bottom surface of the die cover, the distance between two adjacent vertical plates is the same, and the right side surface of the middle part of each vertical plate is transversely connected with an auxiliary pore-forming rod; an auxiliary hole forming rod is arranged between the third parts of the adjacent two screw shafts. By adopting the technical scheme, the auxiliary through holes can be added when the gypsum board is formed, so that the weight of the gypsum board is reduced. The vertical plate and the auxiliary hole forming rod are connected with the top plate, and when the top plate is dismounted, the vertical plate and the auxiliary hole forming rod are taken down together, so that the cleaning is convenient.

Drawings

FIG. 1 is a schematic perspective view of a preferred embodiment of a multi-screw continuous extrusion line for dry gypsum hollow laths of the present utility model.

Fig. 2 is a partial enlarged view of a portion a of fig. 1.

Fig. 3 is a partial enlarged view of a portion C of fig. 2.

Fig. 4 is a partial enlarged view of a portion B of fig. 1.

Fig. 5 is a bottom view of the multi-screw continuous extrusion line for the dry gypsum hollow lath shown in fig. 1.

Fig. 6 is a partial enlarged view of a portion D of fig. 5.

Fig. 7 is a left side view of the multi-screw continuous extrusion line for the dry gypsum hollow lath shown in fig. 1.

Fig. 8 is a rear view of the multi-screw continuous extrusion line for the dry gypsum hollow lath shown in fig. 1.

Fig. 9 is a top view of the dry gypsum hollow lath multi-screw continuous extrusion line shown in fig. 1.

Fig. 10 is a partial enlarged view of a portion E of fig. 9.

Fig. 11 is a partial enlarged view of a portion F of fig. 9.

FIG. 12 is a cross-sectional view of the dry gypsum hollow lath multi-screw continuous extrusion line of FIG. 9 along the line R-R'.

Fig. 13 is a partial enlarged view of a portion G of fig. 12.

Fig. 14 is a partial enlarged view of the H portion of fig. 12.

Fig. 15 is a schematic view of the dry gypsum hollow lath multi-screw continuous extrusion line shown in fig. 1, with the gear box cover of the gypsum-based material continuous feeding device, gear box removed.

Fig. 16 is a partial enlarged view of the portion I of fig. 15.

Fig. 17 is a partial enlarged view of the K portion of fig. 16.

Fig. 18 is a partial enlarged view of the L portion of fig. 16.

Fig. 19 is a partial enlarged view of a portion J of fig. 15.

FIG. 20 is a schematic view of a gypsum-based material continuous feeding apparatus with the right side wall of the conveying box, the front side wall of the conveying box, the rear side wall of the conveying box, and the feed hopper removed and attached to a housing with the cover removed.

Fig. 21 is a partial enlarged view of the M portion of fig. 20.

Fig. 22 is a partial enlarged view of the N portion of fig. 20.

FIG. 23 is a top view of a preferred embodiment of a multi-screw continuous extrusion line for dry gypsum hollow laths of the present utility model.

Fig. 24 is a partial enlarged view of the O portion of fig. 23.

FIG. 25 is a schematic perspective view showing a multi-screw continuous extrusion line for dry gypsum hollow lath in accordance with a preferred embodiment of the present utility model.

Fig. 26 is a partial enlarged view of a portion P of fig. 25.

Fig. 27 is a right side view of the dry gypsum hollow lath multi-screw continuous extrusion line of fig. 25.

Fig. 28 is a partial enlarged view of the Q portion of fig. 27.

FIG. 29 is a state diagram of a multi-screw continuous extrusion line for dry gypsum hollow lath of the present utility model.

Fig. 30 is a schematic structural view of a gypsum board.

Wherein: a frame body-1;

an extrusion box-2; a cover plate-21; extrusion box feed port-22;

a mold-3; a mold cover-31; a die cover holder-32; a vertical plate-33; assist in forming the hole bar-34;

screw shaft-4; helical blades-41; a drive gear-42; a screw shaft first portion-43; a screw shaft second portion-44; a screw shaft third portion-45; a first mounting hole-46; a second mounting hole-47;

a driving device-5; a drive motor-51;

a gear box-6; a first screw shaft through hole-61; a second screw shaft through hole-62; a third screw shaft through hole-63; a first screw bearing-64; a second screw bearing-65; gear box cover-66;

a first output gear-71; a first drive chain-72; a first power take-off gear-73; a second output gear-74; a second drive chain-75; a second power take-off gear-76;

a gypsum-based material continuous feeding device-8; conveying the material box-81; a feed inlet-82 of a conveying bin; a delivery bin discharge port-83; cavity-84; a rotating shaft-85; toothed plate-86; an arcuate recess-87; the left side wall of the conveying bin is-88; the right side wall of the conveying bin is-89; conveying bin front side wall-810; conveying bin rear side wall-811; a first drive gear-812; a guide gear-813; a second drive gear-814; a rotation shaft driving motor-815; a gear boot-816; a feed hopper-817; a support bearing-818; first connecting screw-819;

gypsum board-9; a main through hole-91; auxiliary through holes-92.

Detailed Description

Example 1. The multi-screw continuous extrusion production line for the dry gypsum hollow lath is characterized in that: comprises a frame body 1, an extrusion box 2, a die 3 and a plurality of screw shafts 4 which are sequentially arranged on the frame body 1 from left; the left side of the frame body 1 is provided with a driving device 5; a gypsum-based material continuous supply device 8 is connected above the extrusion box 2 on the frame;

the screw shafts 4 are longitudinally arranged, the left end of each screw shaft 4 passes through the left side wall of the extrusion box 2 and is connected with the driving device 5, and the radial outer peripheral surface of the part of each screw shaft 4 positioned in the extrusion box 2 is provided with a helical blade 41; a cover plate 21 is arranged at the right end of the top surface of the extrusion box 2;

the die 3 comprises a die cover 31 and a die cover bracket 32, and the die cover 31 is movably connected with the die cover bracket 32; the left end of the die 3 is provided with an inlet, and the right end is provided with an outlet;

the right end of the extrusion box 2 is provided with an extrusion box discharge port which is connected with a die inlet of the die 3; the right end of the cover plate 21 is in contact with the die cover 31, and the left end of the cover plate 21 is in contact with the bottom end of the gypsum-based material continuous feeding apparatus 8, thereby forming an extrusion box feed port 22 in front of the cover plate 21 on the top surface of the extrusion box 2; the discharge port of the gypsum-based material continuous feeding device 8 is connected with the feed port 22 of the extrusion box; the right end of each screw shaft 4 passes through the die inlet and into the die 3.

The gypsum-based material continuous feeding device 8 comprises a conveying material box 81, wherein a conveying material box feeding hole 82 is formed in the top end of the conveying material box 81, a conveying material box discharging hole 83 is formed in the bottom end of the conveying material box 81, a cavity 84 is formed between the conveying material box feeding hole 82 and the conveying material box discharging hole 83, and four rotating shafts 85 are longitudinally arranged in the cavity 84; two toothed plates 86 with the same size are longitudinally arranged on the radial outer circumferential surface of each rotary shaft 85, the distance between the end, far away from the rotary shaft 85, of each toothed plate 86 and the central axis of the rotary shaft 85 is defined as L, and the two toothed plates 86 are symmetrical along the central axis of the rotary shaft 85; two arc-shaped grooves 87 for the toothed plate 86 to pass through are longitudinally arranged on the left side wall 88 and the right side wall 89 of the conveying material box respectively; the centers of the four rotation shafts 85 are located at four corners of a square, and the side length of the square is 2L; the concave surface of each arc-shaped groove 87 is connected with a driving device of each rotary shaft 85, wherein the distance between the concave surface of each arc-shaped groove and the central axis of the nearest rotary shaft 85 is L; the bottom end of the right side wall 89 of the conveying box is in contact with the cover plate 21.

The left conveying bin side wall 88 is connected with the front conveying bin side wall 810 and the rear conveying bin side wall 811 through a plurality of first connecting screws 819, and the right conveying bin side wall 89 is connected with the front conveying bin side wall 810 and the rear conveying bin side wall 811 through screws.

Four rotation shaft through holes are longitudinally formed in the front side wall 810 and the rear side wall 811 of the conveying box, and two ends of each rotation shaft 85 respectively penetrate through the nearest rotation shaft through holes in the front side wall 810 and the rear side wall 811 of the conveying box. The concave surface of the arc-shaped groove is arc-shaped in a section perpendicular to each rotation axis, and the center of the arc is positioned at the center line of the rotation axis nearest to the arc-shaped groove.

The front end of each rotating shaft 85 is provided with a first driving gear 812, a guide gear 813 is respectively arranged between the two first driving gears 812 positioned on the left side of the centroid of the front side wall 810 of the conveying material box on the front side wall 810 of the conveying material box and between the two first driving gears 812 positioned on the right side of the centroid of the front side wall 810 of the conveying material box on the front side wall 810 of the conveying material box, each guide gear 813 is meshed with the two nearest first driving gears 812, the rear ends of the two rotating shafts 85 positioned on the lower side of the centroid of the rear side wall 811 of the conveying material box or the rear ends of the two rotating shafts 85 positioned on the upper side of the centroid of the rear side wall 811 of the conveying material box are respectively provided with a second driving gear 814, the two second driving gears 814 are meshed, and one second driving gear 814 is connected with a rotating shaft driving motor 815 arranged on the rear side of the conveying material box 81.

The blade 86 is tangential to the recess 87 which is the closest to it. The rotation directions of the two uppermost rotation shafts are opposite, and the rotation directions of the two lowermost rotation shafts are opposite. In this embodiment, the first step of extruding the material is a right blade of the upper left rotating shaft, and then a left blade of the upper right rotating shaft, to complete the first extrusion of the upper layer. Then the material is extruded by the right blade of the left lower rotating shaft, and the left blade of the right lower rotating shaft completes the first extrusion of the lower layer and is extruded from the discharge hole of the conveying material box. Since the number of the blades on each material rotation shaft is two and symmetrical along the rotation shaft. So the material can be extruded continuously from the material outlet 83 of the conveying material box, and can be conveyed continuously to the whole material outlet 22 of the extruding box of the building material production line under pressure, and the material is extruded into a mould to form a strip plate through an extruding screw, so that the problems that the gypsum-based material containing the desulfurized gypsum is strong in viscosity and poor in fluidity and is difficult to output uniformly are solved.

The feed bin feed inlet 82 is connected to a feed hopper 817. The die cover 31 is screwed with the die cover bracket 32 to form a square frame structure.

Each shaft through hole is coaxially connected to a support bearing 818, and both ends of each shaft 85 pass through the support bearing 818 nearest thereto.

The section of the inner part of each screw shaft 4 positioned in the die 3 and perpendicular to the central axis of the screw shaft 4 is a circle; the right end of each screw located in the inner part of the die 3 has the same diameter, and the rest gradually increases from left to right.

The mold cover bracket 32 is connected with the frame body 1 through a plurality of second connecting screws 820.

Four screw shafts 4 are arranged; the driving device 5 comprises three driving motors 51 transversely arranged on the left side of the frame body 1; of the four screw shafts 4, the screw shaft 4 located at the forefront is connected with the drive motor 51 located at the forefront, the screw shaft 4 located at the rearmost is connected with the drive motor 51 located at the rearmost, transmission gears 42 are coaxially arranged on the left side of the extrusion box 2 on the two screw shafts 4 located in the middle, the two transmission gears 42 are meshed, and one screw shaft 4 of the two screw shafts 4 located in the middle is connected with the drive motor 51 located in the middle.

In the four screw shafts 4, a first output gear 71 is arranged at the left end of the screw shaft 4 positioned at the forefront, and the first output gear 71 is connected with a first power output gear 73 of the drive motor 51 positioned at the forefront in the three drive motors 51 through a first transmission chain 72;

the left end of the screw shaft 4 positioned at the rearmost is provided with a second output gear 74, and the second output gear 74 is connected with a second power output gear 76 of the drive motor 51 positioned at the forefront and rear in the three drive motors 51 through a second transmission chain 75;

the drive motor 51 located in the middle of the three drive motors 51 is coaxially connected with one of the two screw shafts 4 located in the middle of the four screw shafts 4.

A gear box 6 is arranged on the left side of the extrusion box 2 on the frame body 1, and each screw shaft 4 passes through the gear box 6; each drive gear 42 is located within the gearbox 6; four first screw shaft through holes 61 are longitudinally arranged on the right side wall of the gear box 6, four second screw shaft through holes 62 are longitudinally arranged on the left side wall of the gear box 6, and the central axis of each first screw shaft through hole 61 and the central axis of the nearest second screw shaft through hole 62 are on the same straight line; both ends of each screw shaft 4 pass through the first screw shaft through hole 61 and the second screw shaft through hole 62 nearest to the screw shaft 4; the gear box 6 is provided with a gear box cover 66 at the top end.

The screw shaft 4 comprises a coaxially arranged screw shaft first portion 43, a screw shaft second portion 44, a screw shaft third portion 45.

Four third screw shaft through holes 63 are longitudinally arranged on the left side wall of the extrusion box 2, and the central axis of each third screw shaft through hole 63 is on the same straight line with the central axis of the nearest first screw shaft through hole 61.

Both ends of each screw shaft first portion 43 pass through the first screw shaft through hole 61 and the second screw shaft through hole 62 nearest thereto.

Each screw shaft second portion 44 passes through the third screw shaft through hole 63 and is connected to the screw shaft first portion 43 nearest thereto; the radially outer peripheral surface of each screw shaft second portion 44 is provided with a helical blade 41.

The screw shaft third section 45 is connected to the screw shaft second section 44 nearest thereto.

Of the four screw shaft first portions 43, the screw shaft first portion 43 located at the forefront is connected to the drive motor 51 located at the forefront, and the screw shaft first portion 43 located at the rearmost is connected to the drive motor 51 located at the rearmost; the extrusion box 2 on the first parts 43 of the two screw shafts in the middle is coaxially provided with transmission gears 42, the two transmission gears 42 are meshed in a box manner, and one first part 43 of the first parts 43 of the two screw shafts in the middle is connected with a driving motor 51 in the middle; in the four screw shaft 4, a first output gear 71 is provided at the left end of the first screw shaft portion 43 located at the forefront; the left end of the first portion 43 of the screw shaft located rearmost is provided with a second output gear 74.

A first screw bearing 64 is mounted to each first screw shaft through hole 61, and a second screw bearing 65 is mounted to each second screw shaft through hole 62, and each screw shaft first portion 43 is fitted over the first screw bearing 64 and the second screw bearing 65 nearest thereto.

The right end of each screw shaft first part 43 is coaxially provided with a first mounting hole 46, and the left end of each screw shaft second part 44 is inserted into the first mounting hole 46 nearest to the first mounting hole 46 and is connected with the first mounting hole 46 in a key way; the right end of each screw shaft second part 44 is coaxially provided with a second mounting hole 47, and the left end of each screw shaft third part 45 is connected with the second mounting hole 47 nearest to the screw shaft third part; the left end of each third screw shaft portion 45 is threadedly or keyed to the second closest mounting hole 47; the section of the screw shaft third part 45, which is positioned in the inner part of the die 3 and is perpendicular to the central axis of the screw shaft third part 45, is a circle; the diameter of the right end of the third portion 45 of each screw shaft located in the inner portion of the mold 3 is the same, and the diameters of the remaining portions become gradually larger from left to right.

As shown in fig. 29, when cleaning is required, the mold cover is removed to expose the cover plate 21, and the cover plate 21 is pulled out, so that the residual material on the helical blade 41 in the region with large extrusion force below the cover plate of the extrusion box can be cleaned, and the residual material is not solidified into a block, thereby facilitating the next operation. The left conveying bin side wall 88 is connected with the front conveying bin side wall 810 and the rear conveying bin side wall 811 through screws, the right conveying bin side wall 89 is connected with the front conveying bin side wall 810 and the rear conveying bin side wall 811 through screws, and the left conveying bin side wall or the right conveying bin side wall 89 can be detached, so that materials remained on the rotary shafts 85 and the toothed plates 86 can be cleaned conveniently.

Example 2. As shown in fig. 23 to 24, this embodiment is different from embodiment 1 in that: the rear end of each rotating shaft is provided with a first driving gear 812, a guide gear is respectively arranged between two first driving gears which are positioned on the left side of the centroid of the rear side wall of the conveying material box on the rear side wall of the conveying material box and between two first driving gears 812 which are positioned on the right side of the centroid of the rear side wall of the conveying material box on the front side wall of the conveying material box, each guide gear is meshed with two first driving gears 812 closest to the guide gear, the rear ends of two rotating shafts which are positioned on the lower side of the centroid of the front side wall of the conveying material box are respectively provided with a second driving gear 814, the two second driving gears 814 are meshed, and one second driving gear 814 is connected with a rotating shaft driving motor 815 which is arranged on the front side of the conveying material box.

Example 3. As shown in fig. 25 to 28, this embodiment is different from embodiment 1 in that: the front side of the front conveying bin side wall 810 and the rear side of the rear conveying bin side wall 811 are respectively provided with a gear protection cover 816. The first driving gear and the guide gear which are positioned at the front side of the conveying material box are positioned in the gear protection cover which is positioned at the front side of the conveying material box. The second driving gear at the rear side of the conveying bin is positioned in the gear protection cover at the rear side of the conveying bin.

Three vertical plates 33 are vertically connected to the bottom surface of the mold cover 31, the distance between two adjacent vertical plates 33 is the same, and an auxiliary hole forming rod 34 is transversely connected to the right side surface of the middle part of each vertical plate 33. A secondary perforated rod 34 is provided between the third portions 45 of adjacent screw shafts. A secondary hole forming bar is provided as material is fed from the extruder housing into the die and extruded from the discharge port to form gypsum board 9 as shown in figure 30. The gypsum board is provided with four main through holes 91 and three auxiliary through holes 92.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (14)

1. The multi-screw continuous extrusion production line for the dry gypsum hollow lath is characterized in that: comprises a frame body (1), an extrusion box (2), a die (3) and a plurality of screw shafts (4) which are sequentially arranged on the frame body (1) from left; a driving device (5) is arranged on the left side of the frame body (1); a gypsum-based material continuous supply device (8) is connected above the extrusion box (2) on the frame;

the screw shafts (4) are longitudinally arranged, the left end of each screw shaft (4) penetrates through the left side wall of the extrusion box (2) and is connected with the driving device (5), and the radial outer peripheral surface of the part, located in the extrusion box (2), of each screw shaft (4) is provided with a screw blade (41); a cover plate (21) is arranged at the right end of the top surface of the extrusion box (2);

the die (3) comprises a die cover (31) and a die cover bracket (32), and the die cover (31) is movably connected with the die cover bracket (32); the left end of the die (3) is provided with an inlet, and the right end of the die is provided with an outlet;

the right end of the extrusion box (2) is provided with an extrusion box discharge hole which is connected with a die inlet of the die (3); the right end of the cover plate (21) is contacted with the die cover (31), and the left end of the cover plate (21) is contacted with the bottom end of the gypsum-based material continuous feeding device (8), so that an extrusion box feeding hole (22) is formed in front of the cover plate (21) on the top surface of the extrusion box (2); the discharge port of the gypsum-based material continuous supply device (8) is connected with the feed port (22) of the extrusion box; the right end of each screw shaft (4) passes through the die inlet and into the die (3).

2. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 1, wherein: the gypsum-based material continuous feeding device (8) comprises a conveying material box (81), wherein a conveying material box feed inlet (82) is formed in the top end of the conveying material box (81), a conveying material box discharge outlet (83) is formed in the bottom end of the conveying material box (81), a cavity (84) is formed between the conveying material box feed inlet (82) and the conveying material box discharge outlet (83), and four rotating shafts (85) are longitudinally arranged in the cavity (84); two toothed plates (86) with the same size are longitudinally arranged on the radial outer circumferential surface of each rotating shaft (85), the distance between the end, far away from the rotating shaft (85), of each toothed plate (86) and the central axis of the rotating shaft (85) is defined as L, and the two toothed plates (86) are symmetrical along the central axis of the rotating shaft (85); the left side wall (88) and the right side wall (89) of the conveying material box are longitudinally provided with two arc-shaped grooves (87) for the toothed plate (86) to pass through; the centers of the four rotating shafts (85) are positioned at four corners of a square, and the side length of the square is 2L; the distance between the concave surface of each arc-shaped groove (87) and the central axis of the nearest rotating shaft (85) is L; each rotating shaft (85) is connected with a rotating shaft (85) driving device; the bottom end of the right side wall (89) of the conveying material box is contacted with the cover plate (21).

3. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 2, wherein: the left side wall (88) of the conveying material box is movably connected with the front side wall (810) of the conveying material box and the rear side wall (811) of the conveying material box, and the right side wall (89) of the conveying material box is movably connected with the front side wall (810) of the conveying material box and the rear side wall (811) of the conveying material box.

4. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 2, wherein: four rotating shaft through holes are longitudinally formed in the front side wall (810) and the rear side wall (811) of the conveying material box respectively, and two ends of each rotating shaft (85) respectively penetrate through the nearest rotating shaft through holes in the front side wall (810) and the rear side wall (811) of the conveying material box;

a first driving gear (812) is arranged at the front end of each rotating shaft (85), a second driving gear (814) is arranged at the rear end of each rotating shaft (85) positioned at the lower side of the centroid of the rear side wall (811) of the conveying material box or at the rear end of each rotating shaft (85) positioned at the upper side of the centroid of the rear side wall (811) of the conveying material box, a guide gear (813) is arranged between the two first driving gears (812) positioned at the right side of the centroid of the front side wall (810) of the conveying material box on the front side wall (810) of the conveying material box, each guide gear (813) is meshed with the two nearest first driving gears (812), a second driving gear (814) is respectively arranged at the rear end of each rotating shaft (85) positioned at the lower side of the centroid of the rear side wall (811) of the conveying material box or at the upper side of the centroid of the rear side wall (811) of the conveying material box, one second driving gear (814) is meshed with the second driving gear (814),

or,

the rear end of each rotating shaft (85) is provided with a first driving gear (812), a second driving gear (814) is arranged on the rear side wall (811) of the conveying material box between the two first driving gears (812) which are positioned on the left side of the centroid of the rear side wall (811) of the conveying material box and between the two first driving gears (812) which are positioned on the right side of the centroid of the rear side wall (811) of the conveying material box, each driving gear (813) is meshed with the two first driving gears (812) closest to the driving gears, the rear ends of the two rotating shafts (85) which are positioned on the lower side of the centroid of the front side wall (810) of the conveying material box or the rear ends of the two rotating shafts (85) which are positioned on the upper side of the centroid of the front side wall (810) of the conveying material box are respectively provided with a second driving gear (814), and one second driving gear (814) is meshed with a rotating shaft driving motor (815) which is arranged on the front side of the conveying material box (81).

5. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 2, wherein: the front side surface of the front side wall (810) of the conveying material box and the rear side surface of the rear side wall (811) of the conveying material box are respectively provided with a gear protection cover (816); the feed inlet (82) of the conveying bin is connected with a feed hopper (817).

6. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 2, wherein: each rotating shaft through hole is coaxially connected with a support bearing (818), and both ends of each rotating shaft (85) respectively pass through the support bearing (818) nearest to the rotating shaft through hole.

7. A dry gypsum hollow lath multi-screw continuous extrusion line according to any of the claims 1-6, characterized in that: the section of the inner part of each screw shaft (4) positioned in the die (3) and perpendicular to the central axis of the screw shaft (4) is a circle; the right end of the part of each screw rod positioned in the die (3) has the same diameter, and the rest part gradually increases from left to right.

8. A dry gypsum hollow lath multi-screw continuous extrusion line according to any of the claims 1-6, characterized in that: the die cover bracket (32) is movably connected with the frame body (1).

9. A dry gypsum hollow lath multi-screw continuous extrusion line according to any of the claims 1-6, characterized in that: four screw shafts (4) are arranged; the driving device (5) comprises three driving motors (51) transversely arranged at the left side of the frame body (1); among the four screw shafts (4), the screw shaft (4) located at the forefront is connected with the driving motor (51) located at the forefront, the screw shaft (4) located at the rearmost is connected with the driving motor (51) located at the rearmost, transmission gears (42) are coaxially arranged on the left sides of the extrusion boxes (2) on the two screw shafts (4) located in the middle respectively, the two transmission gears (42) are meshed, and one screw shaft (4) in the two screw shafts (4) located in the middle is connected with the driving motor (51) located in the middle.

10. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 9, wherein: in the four screw shafts (4), a first output gear (71) is arranged at the left end of the screw shaft (4) positioned at the forefront, and the first output gear (71) is connected with a first power output gear (73) positioned at the forefront driving motor (51) of the three driving motors (51) through a first transmission chain (72);

the left end of the screw shaft (4) positioned at the rearmost part is provided with a second output gear (74), and the second output gear (74) is connected with a second power output gear (76) positioned at the forefront and rear driving motors (51) of the three driving motors (51) through a second transmission chain (75);

the drive motor (51) positioned in the middle of the three drive motors (51) is coaxially connected with one of the two screw shafts (4) positioned in the middle of the four screw shafts (4).

11. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 9, wherein: a gear box (6) is arranged on the left side of the extrusion box (2) on the frame body (1), and each screw shaft (4) passes through the gear box (6); each transmission gear (42) is positioned in the gear box (6); four first screw shaft through holes (61) are longitudinally arranged on the right side wall of the gear box (6), four second screw shaft through holes (62) are longitudinally arranged on the left side wall of the gear box (6), and the central axis of each first screw shaft through hole (61) and the central axis of the nearest second screw shaft through hole (62) are on the same straight line; both ends of each screw shaft (4) pass through a first screw shaft through hole (61) and a second screw shaft through hole (62) which are nearest to the screw shafts; the top end of the gear box (6) is provided with a gear box cover (66).

12. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 11, wherein: the screw shaft (4) comprises a screw shaft first part (43), a screw shaft second part (44) and a screw shaft third part (45) which are coaxially arranged;

four third screw shaft through holes (63) are longitudinally arranged on the left side wall of the extrusion box (2), and the central axis of each third screw shaft through hole (63) is on the same straight line with the central axis of the nearest first screw shaft through hole (61);

both ends of each screw shaft first portion (43) pass through a first screw shaft through hole (61) and a second screw shaft through hole (62) nearest to the first screw shaft through hole;

each screw shaft second portion (44) passes through the third screw shaft through hole (63) and is connected to the screw shaft first portion (43) nearest thereto; the radial outer peripheral surface of each screw shaft second portion (44) is provided with a helical blade (41);

the third screw shaft section (45) is connected to the second screw shaft section (44) nearest to it;

of the four screw shaft first portions (43), the screw shaft first portion (43) located at the forefront is connected with the drive motor (51) located at the forefront, and the screw shaft first portion (43) located at the rearmost is connected with the drive motor (51) located at the rearmost; the extrusion box (2) on the first parts (43) of the two screw shafts in the middle is coaxially provided with transmission gears (42), the two transmission gears (42) are meshed in a box manner, and the first part (43) of one screw shaft in the first parts (43) of the two screw shafts in the middle is connected with a driving motor (51) in the middle; in the four screw shafts (4), a first output gear (71) is arranged at the left end of a first part (43) of the screw shaft positioned at the forefront; a second output gear (74) is provided at the left end of the first portion (43) of the screw shaft located at the rearmost side.

13. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 12, wherein: a first screw bearing (64) is arranged on each first screw shaft through hole (61), a second screw bearing (65) is arranged on each second screw shaft through hole (62), and each screw shaft first part (43) is sleeved on the first screw bearing (64) and the second screw bearing (65) closest to the first screw shaft first part;

the right end of each screw shaft first part (43) is coaxially provided with a first mounting hole (46), and the left end of each screw shaft second part (44) is inserted into the first mounting hole (46) nearest to the screw shaft second part and is in key connection with the first mounting hole (46); the right end of each screw shaft second part (44) is coaxially provided with a second mounting hole (47), and the left end of each screw shaft third part (45) is connected with the second mounting hole (47) nearest to the screw shaft third part; the left end of each screw shaft third part (45) is in threaded connection or key connection with a second mounting hole (47) nearest to the screw shaft third part; the section of the screw shaft third part (45) which is positioned in the inner part of the die (3) and is perpendicular to the central axis of the screw shaft third part (45) is a circle; the diameter of the right end of the third part (45) of each screw shaft, which is positioned in the inner part of the die (3), is the same, and the diameters of the rest parts are gradually increased from left to right.

14. The dry gypsum hollow lath multi-screw continuous extrusion line of claim 1, wherein: a plurality of vertical plates (33) are vertically connected to the bottom surface of the die cover (31), the distances between two adjacent vertical plates (33) are the same, and the right side surface of the middle part of each vertical plate (33) is transversely connected with an auxiliary pore-forming rod (34); an auxiliary hole forming rod (34) is arranged between the third parts (45) of the adjacent two screw shafts.