A device for improving the stable manufacture of calcium silicate board slabs

Abstract

The application belongs to the technical field of calcium silicate board production, and particularly relates to a device capable of improving the stability of calcium silicate board blank manufacturing, which comprises a rack, a flow box, a felt belt, a breast roll, a forming roll, a gravity dehydration tank and a vacuum dehydration tank installed on the rack; a grid plate is installed on the gravity dehydration tank, the grid plate is installed on the inner wall of the gravity dehydration tank through a mounting plate, a first vibrator is installed on the mounting plate, and the bottom surface in the gravity dehydration tank is arranged to be inclined; a calender roll is installed on the rack, and the calender roll is used for extruding and calendering the wet board blank on the felt belt; the device has a simple structure, the upper and lower sides of the slurry are respectively provided with a first vibrator and a second vibrator, the discharged water is cleaned and discharged from the two sides, so that the water in the slurry is promoted to be discharged, and the vibration of the first vibrator and the second vibrator and the extrusion of the calender roll promote the compaction of the slurry, eliminate internal bubbles and pores, and improve the structural strength, quality and stability of the board blank.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of calcium silicate board production, in particular to a device for improving the stability of calcium silicate board blanks. BACKGROUND

[0002] Calcium silicate board is a new generation of "green" building materials, with excellent moisture-proof and fire-proof performance and unique environmental protection function; calcium silicate board is a new type of building material formed by using silica powder and calcium powder as main base materials, natural wood fiber as reinforcing material, and other auxiliary materials, through flow slurry forming, and then curing at high temperature and high pressure.

[0003] When the calcium silicate board is formed, the slurry laid on the cloth belt will pass through the natural dehydration link and the vacuum dehydration link in turn, and the existing dehydration device has poor dehydration effect, is not convenient for discharging, wastes time and manpower, and at the same time, when preparing thick board blanks with large thickness and reducing the number of thin material multi-layer lamination, the uniformity of the board is easily affected and the dehydration effect near the upper layer area of the board blank is poor, thereby reducing the stability of the board blank and causing defects of the board blank. SUMMARY

[0004] In order to make up for the shortcomings of the prior art, a first vibrator and a second vibrator are arranged on the upper and lower sides of the slurry respectively, and the removed water is cleaned and discharged from both sides, thereby promoting the removal of water in the slurry, improving the dehydration effect, and through the vibration of the first vibrator and the second vibrator and the extrusion of the calender roll, the slurry is promoted to be dense, internal bubbles and pores are eliminated, the structural strength, quality and stability of the board blank are improved, and the application provides a device for improving the stability of calcium silicate board blanks.

[0005] The technical scheme adopted by the application to solve the technical problems is: the device for improving the stability of calcium silicate board blanks, comprising a rack, a flow slurry box, a cloth belt, a breast roll and a forming roll are installed on the rack, a gravity dehydration tank and a vacuum dehydration tank are installed on the rack from left to right;

[0006] A grid plate is installed on the gravity dehydration tank, the lower end of the grid plate is installed on the mounting plate, the mounting plate is installed on the inner wall of the gravity dehydration tank through the mounting spring, a first vibrator is installed on the mounting plate, the upper end of the grid plate contacts and supports the cloth belt, the bottom surface in the gravity dehydration tank is inclined, and the water outlet on the gravity dehydration tank is arranged at the end with lower bottom surface;

[0007] A calender roll is installed on the rack, the calender roll is located in the area where the gravity dehydration tank is located, and the calender roll extrudes and calenders the wet board blank on the cloth belt.

[0008] Preferably, the width of the gravity dewatering box is greater than the width of the felt strip, a guide baffle is arranged on the gravity dewatering box, and the guide baffle comprises an adjusting plate, and the adjusting plate is in contact with the wet board edge on the felt strip.

[0009] The adjusting plate is elastic, one end of the adjusting plate is close to the outlet of the headbox, and the other end of the adjusting plate is close to the vacuum dewatering box.

[0010] Preferably, a positioning groove is arranged on the guide baffle, the edge of the felt strip is inserted into the positioning groove, and the gap of the positioning groove is less than or equal to the thickness of the felt strip.

[0011] Preferably, a positioning strip is arranged on the edge of the felt strip, the cross section of the positioning strip is circular, and the positioning strip and the edge of the felt strip are inserted into the positioning groove together.

[0012] The positioning strip is a length-stretching-resistant tensile round rope.

[0013] Preferably, a fixing frame is arranged on the rack, an elastic member is arranged on the fixing frame, the calender roller is arranged on the fixing frame through a mounting shaft, a second vibrator is arranged on the upper end of the fixing frame, and the second vibrator and the mounting shaft are located above the elastic member.

[0014] A water absorption hole is arranged on the calender roller, an absorption cylinder is arranged in the calender roller, the absorption cylinder is attached to the inner wall of the calender roller on the side close to the felt strip, a connecting pipe is arranged at the end of the absorption cylinder, a through hole is arranged in the mounting shaft, a rotating ring is arranged on the mounting shaft, the connecting pipe is connected to the through hole through the rotating ring, and a water outlet pipe is arranged at the end of the mounting shaft and is connected to the through hole.

[0015] Preferably, a plurality of groups of calender rollers are arranged, and the distance between the calender rollers and the felt strip gradually decreases in the direction away from the headbox.

[0016] Preferably, an elastic layer is arranged on the bottom surface of the gravity dewatering box, a cavity is arranged in the elastic layer, a mounting groove is arranged on the surface of the elastic layer, a contact rod is arranged on the lower surface of the mounting plate, and the lower end of the contact rod is inserted into the mounting groove.

[0017] Preferably, the grid plate comprises a moving plate and a limiting plate, the limiting plate is fixedly arranged on the inner wall of the gravity dewatering box, the moving plate is arranged on the mounting plate, the upper surfaces of the moving plate and the limiting plate are in the same horizontal plane, and the moving plate and the limiting plate are alternately arranged.

[0018] The beneficial effects of the present application are as follows:

[0019] 1. The application discloses a device for improving the stability of a calcium silicate plate blank, which comprises a grid plate, a first vibrator, a calender roll, a second vibrator and a suction cylinder, so that the upper and lower parts of the slurry are subjected to vibration, and the gravity dehydration is promoted, so that the water in the slurry is removed into the gravity dehydration tank and then sucked by the suction cylinder, the dehydration effect is improved, the dehydration difficulty is reduced, the bubbles and pores in the slurry are eliminated, and the slurry is compacted, so that the quality and stability of the prepared plate blank are improved.

[0020] 2. The application discloses a device for improving the stability of a calcium silicate plate blank, which comprises a gravity dehydration tank, a first vibrator, a mounting plate, a contact rod and an elastic layer, so that the surface of the elastic layer is subjected to vibration when the first vibrator works, the slurry removed together with the water is discharged from the gravity dehydration tank, the slurry is prevented from being deposited in the gravity dehydration tank, and the normal use of the gravity dehydration tank is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below with reference to the drawings.

[0022] Figure 1 is a perspective view of the manufacturing device of the application; wherein the lint belt cleaning mechanism is not marked;

[0023] Figure 2 is a structural schematic view of the gravity dehydration tank in the manufacturing device of the application;

[0024] Figure 3 is a structural schematic view of the grid plate in the gravity dehydration tank in the manufacturing device of the application;

[0025] Figure 4 is a structural schematic view of the manufacturing device of the application after removing the calender roll;

[0026] Figure 5 is a structural schematic view of the calender roll in the manufacturing device of the application;

[0027] Figure 6 is a sectional schematic view of the calender roll and the suction cylinder in the manufacturing device of the application;

[0028] Figure 7 is a partial structural schematic view of the guide baffle, the lint belt and the wet plate blank in the manufacturing device of the application;

[0029] Figure 8 is Figure 2 is a partial enlarged view of A in FIG. 6;

[0030] Figure 9 is Figure 4 is a partial enlarged view of B in FIG. 6;

[0031] In the diagram: Frame 1, headbox 11, breast roller 12, forming roller 13, felt belt 2, positioning strip 21, gravity dewatering box 3, grid plate 31, motion plate 311, limit plate 312, mounting plate 313, mounting spring 32, elastic layer 33, contact rod 34, mounting groove 341, first vibrator 35, vacuum dewatering box 4, calendering roller 5, mounting shaft 51, fixing frame 52, elastic element 521, second vibrator 53, absorption cylinder 54, connecting pipe 541, rotating ring 542, water outlet pipe 543, guide baffle 6, adjusting plate 61, wet slab 7. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figures 1 to 9 As shown, the present invention provides a manufacturing apparatus for improving the stability of calcium silicate board blanks, comprising a frame 1, on which a headbox 11, a felt belt 2, a breast roller 12 and a forming roller 13 are mounted, and a gravity dehydration box 3 and a vacuum dehydration box 4 are mounted on the frame 1 from left to right.

[0034] A grid plate 31 is installed on the gravity dehydration tank 3. The lower end of the grid plate 31 is installed on the mounting plate 313. The mounting plate 313 is installed on the inner wall of the gravity dehydration tank 3 by a mounting spring 32. A first vibrator 35 is installed on the mounting plate 313. The upper end of the grid plate 31 contacts and supports the felt belt 2. The bottom surface of the gravity dehydration tank 3 is inclined. The water outlet of the gravity dehydration tank 3 is located at the lower end of the bottom surface.

[0035] A calendering roller 5 is installed on the frame 1. The calendering roller 5 is located in the area where the gravity dehydration tank 3 is located. The calendering roller 5 squeezes and calenders the wet blank 7 on the felt belt 2.

[0036] In the calcium silicate board production process, the slurry is laid from the headbox 11 onto the felt belt 2. Then, the felt belt 2 carries the slurry through the gravity dewatering box 3 and the vacuum dewatering box 4 for dewatering. After that, the felt belt 2 carries the dewatered blank to the breast roller 12 and the forming roller 13 for extrusion and stacking. After the blank on the forming roller 13 reaches the designed thickness, it is automatically cut and separated to become a wet board blank 7, waiting for subsequent processing.

[0037] Meanwhile, after the slurry is laid on the felt belt 2, it will move with the felt belt 2 to the top of the gravity dewatering tank 3, so that the water in the slurry will be separated into the gravity dewatering tank 3 under the action of gravity. Then, the water will be concentrated under the action of the inclined bottom surface of the gravity dewatering tank 3 and finally discharged from the outlet.

[0038] Meanwhile, when the slurry moves above the gravity dewatering box 3 along with the felt belt 2, the controller controls the first vibrator 35 to operate, so that the mounting plate 313 and the grid plate 31 vibrate, and since the upper end of the grid plate 31 contacts and supports the felt belt 2, the felt belt 2 passing through the gravity dewatering box 3 vibrates together with the slurry, which promotes the water in the slurry to separate out under the vibration, and accelerates the efficiency and effect of the water in the slurry to dewater under the gravity;

[0039] Meanwhile, since the gravity dewatering box 3 is located behind the headbox 11, the slurry first contacts the gravity dewatering box 3 after being discharged from the headbox 11, and the water in the slurry is relatively sufficient, at this time, through the vibration of the first vibrator 35, the slurry on the felt belt 2 which has not yet dewatered too much water is vibrated, which promotes the elimination of bubbles and pores existing in the slurry, and promotes the densification of the slurry, improves the strength of the slurry, and makes the prepared board blank more stable;

[0040] Meanwhile, when the slurry passes above the gravity dewatering box 3 along with the felt belt 2, the surface of the slurry is contacted and extruded by the calender roll 5, and the slurry is simply extruded and pressed through the action of the calender roll 5, which further promotes the densification and elimination of internal pore of the slurry, improves the stability of the prepared board blank, at the same time, the calender roll 5 is driven to rotate by the motor, so that the calender roll 5 rotates at a linear speed greater than or equal to the movement speed of the felt belt 2 and in the same direction, so that when the slurry passes through the calender roll 5, the surface of the slurry is scraped and smoothed by the calender roll 5, so that the surface quality of the prepared board blank is relatively good, and the influence of surface defects on the quality and stability of the board blank is avoided.

[0041] As an embodiment of the present application, the width of the gravity dewatering box 3 is greater than the width of the felt belt 2, and a guide baffle 6 is installed on the gravity dewatering box 3, the guide baffle 6 comprises an adjusting plate 61, and the adjusting plate 61 contacts the edge of the wet board blank 7 on the felt belt 2;

[0042] The adjusting plate 61 is elastic, one end of the adjusting plate 61 is close to the outlet of the headbox 11, and the other end of the adjusting plate 61 is close to the vacuum dewatering box 4;

[0043] Since the slurry contains relatively more water when it reaches above the gravity dewatering box 3, and the slurry is also affected by the vibration of the first vibrator 35 when it is above the gravity dewatering box 3, therefore, when the slurry on the felt belt 2 passes through the gravity dewatering box 3, the flowability of the slurry is relatively good, and the edges of the slurry are prone to spread and flow, which leads to slurry leakage, pollution of equipment and environment, therefore, the guide baffle 6 is installed to limit and block the two sides of the slurry on the felt belt 2, which reduces the spread of the slurry during the dewatering process under the gravity, and avoids pollution and waste caused by slurry leakage;

[0044] Meanwhile, by installing the adjusting plate 61 on the guide baffle 6, and the adjusting plate 61 is elastic, so that the end of the adjusting plate 61 close to the headbox 11 extends to the pulp outlet on the headbox 11, the pulp is guided and limited when discharging, avoiding the pulp from escaping and flowing before reaching the gravity dewatering box 3, and meanwhile, by replacing the adjusting plate 61, when preparing the slab with different thickness, the pulp on the felt belt 2 cannot overflow the adjusting plate 61, avoiding the leakage of the pulp from causing pollution.

[0045] As an embodiment of the present application, the guide baffle 6 is provided with a positioning groove, and the edge of the felt belt 2 is inserted into the positioning groove, and the gap of the positioning groove is less than or equal to the thickness of the felt belt 2.

[0046] Since the edge of the felt belt 2 is inserted into the positioning groove on the guide baffle 6, the edges on both sides of the felt belt 2 are clamped by the guide baffle 6, limiting and stabilizing the running of the felt belt 2, reducing the possibility of the felt belt 2 running out of skew and deviation, and at the same time, since the edge of the felt belt 2 is compressed by the positioning groove, when the adjusting plate 61 limits and guides the pulp, the edge of the felt belt 2 is limited when the adjusting plate 61 and the felt belt 2 are subjected to transverse force, avoiding the edge of the felt belt 2 from curling and wrinkling, preventing the edge of the felt belt 2 from wrinkling and curling from affecting the edge of the slab, and further causing poor stability of the slab.

[0047] As an embodiment of the present application, the edge of the felt belt 2 is provided with a positioning strip 21, the cross section of the positioning strip 21 is circular, and the positioning strip 21 and the edge of the felt belt 2 are inserted into the positioning groove together.

[0048] The positioning strip 21 is a length-unchangeable tensile round rope.

[0049] By installing the positioning strip 21 on the edge of the felt belt 2, and using the characteristic of the positioning strip 21 that is not easy to stretch, it is ensured that the stretchable distance of the edges on both sides of the felt belt 2 is the same after the felt belt 2 runs for a long time, avoiding the deformation of the felt belt 2 caused by the inconsistent deformation of the edges on both sides of the felt belt 2, affecting the quality and structural strength of the slab prepared, and causing poor stability of the slab.

[0050] At the same time, since the edge of the felt belt 2 and the positioning strip 21 will be inserted into the positioning groove, the circular positioning strip 21 is clamped in the positioning groove, and by the cooperation between the positioning strip 21 and the positioning groove, the difficulty of pulling out the felt belt 2 in the width direction of the felt belt 2 in the positioning groove is greatly increased, so as to ensure that the felt belt 2 fully expands and runs stably, facilitating the laying and dewatering of the pulp, ensuring the structural stability of the prepared slab, and further improving the stability of the slab.

[0051] As an embodiment of the present application, the frame 1 is provided with a fixing frame 52, the fixing frame 52 is provided with an elastic member 521, the calender roller 5 is installed on the fixing frame 52 through a mounting shaft 51, the upper end of the fixing frame 52 is provided with a second vibrator 53, and the second vibrator 53 and the mounting shaft 51 are located above the elastic member 521.

[0052] The calender roller 5 is provided with water absorption holes, and the calender roller 5 is provided with an absorption cylinder 54, the absorption cylinder 54 is attached to the inner wall of the calender roller 5 near the felt belt 2, the end of the absorption cylinder 54 is provided with a connecting pipe 541, the mounting shaft 51 is provided with a through hole, the mounting shaft 51 is provided with a rotating ring 542, the connecting pipe 541 is connected to the through hole through the rotating ring 542, and the end of the mounting shaft 51 is provided with a water outlet pipe 543, which is connected to the through hole.

[0053] When a single blank with a large thickness is prepared, thereby reducing the number of thin layers to reduce the structural defects in the prepared board blank, due to the large thickness of the laid pulp and the large thickness of the blank during dehydration, the water in the lower layer of the blank is relatively easy to pass through the blank under the action of gravity and vacuum suction and be removed, while the water in the upper layer of the blank needs to pass through a long distance and is difficult to pass through, thereby being prone to insufficient dehydration and difficulty, affecting the dehydration effect of the board blank and the stability of the prepared board blank, and simultaneously, the pulp above the gravity dehydration tank 3 is simultaneously subjected to extrusion by the calender roller 5, the calender roller 5 is installed through the fixing frame 52 provided with an elastic member 521, and the second vibrator 53 is installed on the fixing frame 52, when the second vibrator 53 works, the calender roller 5 is vibrated, thereby cooperating with the vibration of the first vibrator 35 in the gravity dehydration tank 3 to vibrate and dehydrate the upper layer and the lower layer of the pulp respectively: the water in the lower layer of the pulp is removed into the gravity dehydration tank 3, and the water in the upper layer of the pulp is sucked and removed by the absorption cylinder 54 through the water absorption holes on the calender roller 5, thereby promoting the removal of water in the pulp and ensuring the quality and stability of the prepared board blank.

[0054] Meanwhile, since the absorption cylinder 54 is installed on the mounting shaft 51 through the connecting pipe 541 and the rotating ring 542, the absorption cylinder 54 is always attached to the inner wall of the calender roller 5 near the pulp during the rotation of the calender roller 5, so as to facilitate the suction of the separated water by the absorption cylinder 54 and improve the dehydration effect, and meanwhile, the water entering the absorption cylinder 54 passes through the connecting pipe 541 and the connecting ring into the through hole in the mounting shaft 51, and is then discharged from the water outlet pipe 543 connected to the through hole.

[0055] As an embodiment of the present application, the calender roller 5 is provided with multiple groups, and the distance between the calender roller 5 and the felt belt 2 gradually decreases in the direction away from the headbox 11.

[0056] Since the slurry gradually passes through the gravity dewatering box 3 along with the movement of the felt belt 2, the water content in the slurry on the felt belt 2 is gradually reduced, and thus the pressing and calendering degree of the calendering roller 5 close to the headbox 11 on the slurry on the felt belt 2 is relatively small, so that when the slurry is pressed and calendered, the water content in the slurry is relatively high and the flowability is relatively good, which causes the slurry to flow and spread after being pressed by the calendering roller 5, resulting in waste of the slurry or pollution of the equipment and affecting the quality and stability of the prepared board.

[0057] As an embodiment of the present application, an elastic layer 33 is installed on the bottom surface of the gravity dewatering box 3, a cavity is formed in the elastic layer 33, an installation groove 341 is arranged on the surface of the elastic layer 33, a contact rod 34 is installed on the lower surface of the installation plate 313, and the lower end of the contact rod 34 is inserted into the installation groove 341.

[0058] Since the water content in the slurry is high when the gravity dewatering box 3 is dewatered, a part of the slurry is easily entrained and carried out together with the dewatered water, which causes the slurry in the gravity dewatering box 3 to precipitate and deposit, affecting the discharge of the dewatered water in the gravity dewatering box 3. Therefore, the elastic layer 33 is installed on the bottom surface of the gravity dewatering box 3, and when the installation plate 313 and the grid plate 31 are vibrated by the first vibrator 35, the contact rod 34 on the lower surface of the installation plate 313 also vibrates, thereby causing the surface of the elastic layer 33 contacted by the contact rod 34 to vibrate, so as to promote the discharge of the slurry entering the gravity dewatering box 3 by vibration, avoid the slurry from precipitating, and affect the discharge of the water in the gravity dewatering box 3.

[0059] Meanwhile, the cavity is formed in the elastic layer 33, so that the contact rod 34 contacts the side wall of the elastic layer 33 close to the upper side, i.e., the side wall of the elastic layer 33 contacting the dewatered water and the entrained slurry, which facilitates the vibration of the elastic layer 33 by the contact rod 34 and promotes the precipitation of the slurry to be discharged together with the water from the gravity dewatering box 3.

[0060] As an embodiment of the present application, the grid plate 31 comprises a moving plate 311 and a limiting plate 312, the limiting plate 312 is fixedly installed on the inner wall of the gravity dewatering box 3, the moving plate 311 is installed on the installation plate 313, the upper surfaces of the moving plate 311 and the limiting plate 312 are in the same horizontal plane, and the moving plate 311 and the limiting plate 312 are alternately installed.

[0061] Since the limiting plate 312 is installed on the inner wall of the gravity dehydration tank 3, and the limiting plate 312 and the moving plate 311 are installed alternately, the felt belt 2 can be fully supported when running, avoiding the vibration of all grid plates 31 when the first vibrator 35 works, causing the vibration amplitude of the felt belt 2 to be too large, the slurry on the felt belt 2 to be unstable, affecting the normal dehydration of the slurry, and the quality and stability of the prepared board blank.

[0062] The specific working process is as follows:

[0063] In the production process of calcium silicate board, the slurry is laid on the felt belt 2 from the flow box 11, then the felt belt 2 drives the slurry to pass through the gravity dehydration tank 3 and the vacuum dehydration tank 4 in turn for dehydration, then the felt belt 2 drives the dehydrated blank to the breast roll 12 and the forming roll 13 for extrusion and lamination, and the blank on the forming roll 13 is automatically cut off and separated when the thickness reaches the designed thickness, becoming a wet board blank 7, waiting for subsequent process;

[0064] At the same time, after the slurry is laid on the felt belt 2, it will move to the top of the gravity dehydration tank 3 with the felt belt 2, so that the water in the slurry is separated and dehydrated into the gravity dehydration tank 3 under the action of gravity;

[0065] At the same time, when the slurry moves to the top of the gravity dehydration tank 3 with the felt belt 2, the controller controls the first vibrator 35 to work, thereby driving the mounting plate 313 and the grid plate 31 to vibrate, since the upper end of the grid plate 31 contacts and supports the felt belt 2, it will drive the felt belt 2 passing through the gravity dehydration tank 3 to vibrate with the slurry, promoting the water in the slurry to separate out under the action of vibration;

[0066] At the same time, through the vibration action of the first vibrator 35, the slurry on the felt belt 2 which has not yet lost too much water is vibrated, promoting the elimination of bubbles and pores existing in the slurry, and promoting the densification of the slurry, improving the strength of the slurry, and making the prepared board blank more stable;

[0067] At the same time, when the slurry passes through the top of the gravity dehydration tank 3 with the felt belt 2, the surface of the slurry will be contacted and extruded by the calender roll 5, and the slurry is simply extruded and pressed by the action of the calender roll 5, further promoting the densification and elimination of internal pores of the slurry, at the same time, the calender roll 5 is driven to rotate by the motor, so that the calender roll 5 rotates at a linear speed greater than or equal to the movement speed of the felt belt 2 and in the same direction, so that when the slurry passes through the calender roll 5, the surface of the slurry is scraped and smoothed by the calender roll 5, making the surface quality of the prepared board blank relatively good;

[0068] The two sides of the slurry on the felt belt 2 are limited and blocked by the installed guide baffle 6, reducing the diffusion of the slurry during dehydration under the action of gravity;

[0069] Meanwhile, by installing the adjusting plate 61 on the guide baffle 6, and the adjusting plate 61 is elastic, so that the end of the adjusting plate 61 close to the headbox 11 extends to the pulp outlet on the headbox 11, the pulp is guided and limited when it is discharged, and by replacing the adjusting plate 61, when the slab of different thickness is prepared, the pulp on the felt belt 2 cannot overflow the adjusting plate 61;

[0070] Because the edge of the felt belt 2 is inserted into the positioning groove on the guide baffle 6, the edges of the felt belt 2 on both sides are clamped by the guide baffle 6, and the running of the felt belt 2 is limited and stabilized, and when the adjusting plate 61 limits and guides the pulp, the edges of the felt belt 2 are limited when the adjusting plate 61 and the felt belt 2 are subjected to transverse force, so that the edges of the felt belt 2 are prevented from curling and wrinkling;

[0071] By installing the positioning strip 21 on the edge of the felt belt 2, and by using the characteristic that the positioning strip 21 is not easy to stretch, it is ensured that the edges of the felt belt 2 on both sides can stretch by the same distance after the felt belt 2 runs for a long time, so that the deformation of the felt belt 2 on both sides is prevented from being inconsistent, the felt belt 2 is prevented from being deformed, and the stability of the prepared slab is affected;

[0072] Meanwhile, because the edge of the felt belt 2 and the positioning strip 21 will be inserted into the positioning groove, the circular positioning strip 21 is clamped in the positioning groove, and by using the cooperation between the positioning strip 21 and the positioning groove, the difficulty of pulling out the felt belt 2 in the width direction of the felt belt 2 in the positioning groove is greatly increased, so that the felt belt 2 is fully unfolded and runs stably;

[0073] Meanwhile, because the pulp above the gravity dewatering tank 3 will be simultaneously extruded by the calender roller 5, by installing the fixing frame 52 with the elastic member 521 to install the calender roller 5, and by installing the second vibrator 53 on the fixing frame 52, when the second vibrator 53 works, the calender roller 5 will vibrate, so as to cooperate with the vibration of the first vibrator 35 in the gravity dewatering tank 3 to vibrate and dewater the upper layer and the lower layer of the pulp respectively: the water in the lower layer area of the pulp is dewatered into the gravity dewatering tank 3, and the water in the upper layer area of the pulp is sucked and removed by the suction cylinder 54 through the water suction hole on the calender roller 5;

[0074] Meanwhile, because the suction cylinder 54 is installed on the mounting shaft 51 through the connecting pipe 541 and the rotating ring 542, the suction cylinder 54 is always close to the inner wall of the calender roller 5 close to the pulp during the rotation of the calender roller 5, so as to facilitate the suction of the separated water by the suction cylinder 54 and improve the dewatering effect, and the water entering the suction cylinder 54 will enter the through hole in the mounting shaft 51 through the connecting pipe 541 and the connecting ring, and then be discharged from the water outlet pipe 543 connected to the through hole;

[0075] The pressing and calendering degree of the pressurized roller 5 close to the headbox 11 on the slurry on the felt belt 2 is relatively small, avoiding that the water content in the slurry is relatively high and the flowability is relatively good when the slurry is pressed and calendered, so that the slurry is diffused after being pressed by the pressurized roller 5;

[0076] The elastic layer 33 is installed on the bottom surface of the gravity dewatering box 3, when the mounting plate 313 and the grid plate 31 are vibrated by the first vibrator 35, the contact rod 34 on the lower surface of the mounting plate 313 is also vibrated, so that the surface of the elastic layer 33 contacted by the contact rod 34 is vibrated, so as to promote the slurry entering into the gravity dewatering box 3 to be discharged through vibration;

[0077] Meanwhile, the cavity is formed in the elastic layer 33, so that the contact rod 34 is contacted with the side wall of the elastic layer 33 close to the upper side, that is, the side wall of the elastic layer 33 contacted with the dewatered slurry, so as to facilitate the vibration of the elastic layer 33 driven by the contact rod 34;

[0078] Since the limiting plate 312 is installed on the inner wall of the gravity dewatering box 3, and the limiting plate 312 and the moving plate 311 are alternately installed, so that the felt belt 2 can be fully supported when running, avoiding that all the grid plates 31 are vibrated when the first vibrator 35 works, so that the vibration amplitude of the felt belt 2 is too large, the slurry on the felt belt 2 is not stably distributed, and the quality and stability of the prepared board are affected.

[0079] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for improving the stability of calcium silicate board blank manufacturing, comprising a frame (1), wherein a headbox (11), a felt belt (2), a breast roller (12) and a forming roller (13) are installed on the frame (1), and a gravity dehydration box (3) and a vacuum dehydration box (4) are installed on the frame (1) from left to right; Its features are: A grid plate (31) is installed on the gravity dehydration tank (3). The lower end of the grid plate (31) is installed on the mounting plate (313). The mounting plate (313) is installed on the inner wall of the gravity dehydration tank (3) by a mounting spring (32). A first vibrator (35) is installed on the mounting plate (313). The upper end of the grid plate (31) contacts and supports the felt belt (2). The bottom surface of the gravity dehydration tank (3) is inclined. The water outlet of the gravity dehydration tank (3) is located at the lower end of the bottom surface. A calendering roller (5) is installed on the frame (1). The calendering roller (5) is located in the area where the gravity dehydration tank (3) is located. The calendering roller (5) squeezes and calenders the wet blank (7) on the felt belt (2). The width of the gravity dehydration tank (3) is greater than the width of the felt belt (2). A guide baffle (6) is installed on the gravity dehydration tank (3). The guide baffle (6) includes an adjusting plate (61). The adjusting plate (61) contacts the edge of the wet blank (7) on the felt belt (2). The adjusting plate (61) is elastic, one end of the adjusting plate (61) is close to the outlet of the headbox (11), and the other end of the adjusting plate (61) is close to the vacuum dewatering box (4); The guide baffle (6) is provided with a positioning groove, and the edge of the felt strip (2) is inserted into the positioning groove. The gap of the positioning groove is less than or equal to the thickness of the felt strip (2). A fixed frame (52) is installed on the frame (1), and an elastic element (521) is installed on the fixed frame (52). The calendering roller (5) is installed on the fixed frame (52) via a mounting shaft (51). A second vibrator (53) is installed at the upper end of the fixed frame (52). The second vibrator (53) and the mounting shaft (51) are located above the elastic element (521). The calendering roller (5) has a water absorption hole, and an absorption cylinder (54) is installed inside the calendering roller (5). The absorption cylinder (54) is attached to the inner wall of the calendering roller near the felt belt (2). A connecting pipe (541) is installed at the end of the absorption cylinder (54). A through hole is opened inside the mounting shaft (51). A rotating ring (542) is installed on the mounting shaft (51). The connecting pipe (541) is connected to the through hole through the rotating ring (542). A water outlet pipe (543) is installed at the end of the mounting shaft (51). The water outlet pipe (543) is connected to the through hole.

2. The apparatus for improving the stability of calcium silicate board blank manufacturing according to claim 1, characterized in that: The edge of the felt strip (2) is fitted with a positioning strip (21), the positioning strip (21) has a circular cross-section, and the positioning strip (21) and the edge of the felt strip (2) are inserted together into the positioning groove; The positioning strip (21) is a tensile-resistant round rope that is not easily stretched.

3. The apparatus for improving the stability of calcium silicate board blank manufacturing according to claim 1, characterized in that: The calendering roller (5) is provided in multiple sets, and the distance between the calendering roller (5) and the felt belt (2) gradually decreases in the direction away from the headbox (11).

4. The apparatus for improving the stability of calcium silicate board blank manufacturing according to claim 1, characterized in that: An elastic layer (33) is installed on the bottom surface of the gravity dehydration tank (3). A cavity is provided in the elastic layer (33). An installation groove (341) is provided on the surface of the elastic layer (33). A contact rod (34) is installed on the lower surface of the mounting plate (313). The lower end of the contact rod (34) is inserted into the installation groove (341).

5. The apparatus for improving the stability of calcium silicate board blank manufacturing according to claim 1, characterized in that: The grid plate (31) includes a moving plate (311) and a limiting plate (312). The limiting plate (312) is fixedly installed on the inner wall of the gravity dehydration tank (3). The moving plate (311) is installed on the mounting plate (313). The upper surfaces of the moving plate (311) and the limiting plate (312) are on the same horizontal plane. The moving plate (311) and the limiting plate (312) are installed alternately.

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