CN108527922B - A kind of biomass charcoal powder small tablet press - Google Patents

Abstract

The invention discloses a small biomass carbon powder tablet press, which includes a feeding and feeding mechanism, a forming, pressing and demoulding mechanism. The feeding and feeding mechanism includes a feeding bracket, a hopper, a feeding frame and a feeding oil cylinder. The left and right sides of the feeding frame It is equipped with a feeding slide rail, and there are first feeding rails on the left and right sides of the feeding bracket. The molding, pressing and demoulding mechanism includes a frame and a middle mold cylinder. The middle mold includes a middle template, a middle pressure plate and a cover plate. The left and right sides of the middle pressure plate There is a second feeding guide rail on the side frame, which is flush with the first feeding guide rail and can be connected; there are demoulding slide rails on the left and right sides of the middle template, and demoulding guide rails on the left and right sides of the frame. , the middle mold can slide on the demoulding guide rail and be aligned up and down with the upper mold or demoulding respectively; a stainless steel inner sleeve is nested in the template hole of the middle mold plate. The invention can be used in the laboratory to continuously prepare shaped carbon with high density and strength.

Description

A kind of biomass charcoal powder small tablet press

Technical field

The invention relates to the technical field of molding and tableting machinery, and in particular to a small biomass carbon powder tableting machine.

Background technique

Existing biomass raw material molding mainly uses screw extrusion molding technology, hydraulic plunger stamping molding technology, pellet fuel molding technology, and mechanical plunger rapid reciprocating compression molding technology for cold pressing and hot pressing molding. Among them, room temperature molding technology mainly There are ring die or flat die pellet fuel molding technologies, but they are not suitable for normal temperature molding of biomass carbon powder.

Existing biomass carbon powder molding machines mainly include rotary tablet presses and double-roller extrusion molding machines. Rotary tablet presses can only form a single piece at a time, have high requirements on the shape of the product, and are limited in size. Due to the high equipment cost, the double-roller extrusion molding machine is mainly used for products with larger sizes, and has defects such as heavy equipment, inconvenient transportation, and low surface smoothness of the molded products.

The quality of the molding fuel depends on the diameter, temperature, pressure, binder and other process parameters of the molding mold. It is important to consider the ability of the molding equipment to form molding fuel with considerable mechanical strength from biomass raw materials, and the ability of the molding process to increase the density of the molding fuel. . The Chinese invention patent with application number CN201110304591.8 (application publication number CN 102328451 A, application publication date 2012.01.25) discloses a biomass raw material high-pressure rapid prototyping tablet press, which is a relatively typical biomass carbon molding The equipment, however, can only be used for factory production and is not suitable for the preparation of small quantities of samples in the laboratory. There are too many molds, and the molding pressure is mainly based on the mold with the smallest stress. It is greatly affected by factors such as the uniformity of the feed and is easy to As a result, the molding pressure is too low, and the density and integrity of the finished product are low. In addition, for the structure of the front and rear movement of the formwork, two long circular guide pillars are installed under the middle formwork to connect the two spaces of molding and demoulding. Four copper guide bushes are installed under the middle formwork for forward and backward movement, and then at the four corners of the middle formwork, Install four pulleys to move with the template. The disadvantages of this structure are that the weight of the middle formwork is heavy, the long guide posts are easily deformed by pressure, the guide posts and guide bushings are difficult to refuel and are prone to wear, and the forward and backward movement swaying errors are large, and it is easy to cause misalignment of the forming and demoulding positioning of the middle formwork, and It is quite difficult to adjust the accuracy of guide posts.

Contents of the invention

The purpose of the present invention is to provide a small biomass carbon powder tablet press to solve the problems existing in the above-mentioned prior art and enable it to be used in the laboratory to continuously prepare shaped carbon with high density and strength.

In order to achieve the above objects, the present invention provides the following solutions:

The invention provides a small biomass carbon powder tablet press, which is characterized in that it includes a loading and feeding mechanism, a molding, pressing and demoulding mechanism, and the feeding and feeding mechanism is arranged on the front side of the molding, pressing and demoulding mechanism. ;

The loading and feeding mechanism includes a feeding bracket, a hopper, a feeding frame and a feeding oil cylinder. The hopper is arranged on the feeding bracket. Feeding slide rails are provided on the left and right sides of the feeding frame. The left and right sides of the feeding bracket A first feeding guide rail is provided on the side, and the feeding frame, driven by the feeding cylinder, can feed the raw materials in the hopper into the forming, pressing and demoulding mechanism;

The molding, pressing and demoulding mechanism includes a frame, an upper mold, a middle mold, a lower mold, a demoulding and a middle mold oil cylinder. The frame is arranged on the rear side of the feeding bracket, and the upper mold and the lower mold Arranged on the front side of the demoulding, the middle mold is arranged between the upper mold and the lower mold, and the upper mold and the demoulding are both located on the upper side of the middle mold;

The middle mold includes a middle mold plate, a middle pressure plate and a cover plate arranged in sequence from bottom to top. The middle pressure plate is provided with retaining frames on three sides, with one side of the opening facing the loading and feeding mechanism, and the left and right sides of the middle mold. The side frame is provided with a second feeding guide rail, which is flush with the first feeding guide rail and can be connected; the left and right sides of the middle template are provided with demoulding slide rails, and the left and right sides of the frame are There are demoulding guide rails on both sides, and the middle mold can slide on the demoulding guide rails driven by the middle mold oil cylinder and be aligned up and down with the upper mold or the demoulding respectively;

There are no more than ten template holes on the middle template, and a stainless steel inner sleeve is nested in each template hole. The upper edge of the stainless steel inner sleeve is stuck between the middle pressure plate and the cover plate. between.

Preferably, at least two positioning holes are symmetrically provided on the middle mold, some of the positioning holes match the upper positioning posts of the upper mold, and the rest of the positioning holes match the lower positioning posts of the lower mold. , all the positioning holes are matched with the demoulding positioning posts.

Preferably, the upper mold includes an upper template, an upper oil cylinder flange and an upper punch fixing plate connected by bolts. The left and right ends of the upper template are connected to upper slide blocks through upper positioning clamping plates. The upper slide block It is slidingly connected to the upper guide rail provided on the frame, and the upper positioning column is arranged on the lower side of the upper positioning clamping plate; the upper oil cylinder flange is arranged on the upper side of the upper template, and the upper oil cylinder method The orchid is connected to the piston rod of the upper oil cylinder arranged on the frame; the upper punch fixing plate is arranged on the lower side of the upper template, and the lower side of the upper punch fixing plate is provided with the template hole. There are an equal number of upper punches, and the upper punches correspond to the stainless steel inner sleeve one by one.

Preferably, the lower mold includes a lower template, a lower oil cylinder flange and a lower punch fixing plate connected by bolts. The left and right ends of the lower template are connected with lower blocks through lower positioning clamping plates. The lower blocks It is slidingly connected to the lower guide rail provided on the frame, and the lower positioning column is arranged on the upper side of the lower positioning clamping plate; the lower oil cylinder flange is arranged on the lower side of the lower template, and the lower oil cylinder method The orchid is connected to the piston rod of the lower oil cylinder arranged on the frame; the lower punch fixing plate is arranged on the upper side of the upper template, and the upper side of the lower punch fixing plate is provided with the template hole. There are an equal number of lower punches, and the lower punches correspond to the stainless steel inner sleeve one by one.

Preferably, the demoulding includes a demoulding plate, a demoulding cylinder flange and a demoulding punch fixing plate connected by bolts. The demoulding cylinder flange is arranged on the upper side of the demoulding plate. The demoulding cylinder flange is connected to the demoulding cylinder flange. The piston rod of the demoulding cylinder provided on the frame is connected; the demoulding punch fixing plate is arranged on the lower side of the demoulding plate, and the lower side of the demoulding punch fixing plate is provided with the template. The demoulding punch has an equal number of holes, and the demoulding punch corresponds to the stainless steel inner sleeve; the demoulding positioning post is arranged on the lower side of the demoulding punch fixing plate; the lower part of the demoulding punch A finished product receiving hopper is provided on the side, and the finished product receiving hopper is connected to the frame.

Preferably, the feeding slide rail, the first feeding guide rail, the second feeding guide rail, the demoulding slide rail, the demoulding guide rail, the upper slide block, the upper guide rail, the lower The materials of the slider and the lower guide rail are copper or copper alloy.

Preferably, the upper punch, the lower punch and the demoulding punch are all made of 40Cr alloy steel, and the surfaces of the upper punch, the lower punch and the demoulding punch are Hard chrome plated after polishing.

Preferably, the number of the template holes is five, one of the template holes is arranged at the center of the middle template, and the remaining four template holes are evenly distributed with the center of the middle template as the center of the circle.

Preferably, a rubber scraper is provided at the front end of the feeding frame, and the rubber scraper is used to clean the remaining raw materials on the upper punch of the upper mold.

Preferably, the front half of the feeding frame is open up and down, the rear half of the feeding frame is closed, the feeding oil cylinder is provided at one end of the feeding bracket, and the piston rod of the feeding oil cylinder is connected to the rear half of the feeding frame. Partially connected, the rear half of the feeding frame can block the material opening of the hopper when the feeding frame is located at the first station, and the front half of the feeding frame is located at the second station when the feeding frame is located at the second station. At the lower end of the material opening of the hopper, when the feeding frame returns to the second station, a feeding conveyor belt adds raw materials to the hopper.

Compared with the existing technology, the present invention has achieved the following technical effects: the number of template holes on the middle template of the present invention is less, and by adjusting the stroke and working pressure of the upper and lower die punches, combined with the up and down movement of the upper punch, it can continuously Increasing the density between biomass carbon powders and improving the density and strength of molded samples can facilitate the preparation of high-density and high-strength molded carbons.

The present invention realizes automatic continuous molding of biomass carbon powder through the design of automatic loading and feeding, continuous stamping, automatic cleaning, and continuous demoulding.

The template hole of the invention is provided with a stainless steel inner sleeve, and the punches are all made of 40Cr alloy steel that has been polished and then plated with hard chromium, which solves the problems of template holes and punches being prone to mold sticking, rusting, and wear.

The middle mold of the present invention adopts a demoulding slide rail to be slidably connected to the demoulding guide rail on the frame, and the middle mold is also provided with positioning holes to position the upper mold, lower mold and upper mold respectively, so that the middle mold can move forward and backward without deviation. The left and right sides remain correct and stable to ensure the accuracy of the movement of the middle template.

The loading and feeding mechanism and the molding, pressing and demoulding mechanism of the present invention are structurally independent of each other, and cooperate with the separation and reassembly structures of the hydraulic pump station and electrical control cabinet to improve the durability, disassembly and mobility of the molding machine.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the drawings of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic front structural view of the biomass carbon powder small tablet press of the present invention;

Figure 2 is a schematic side view of the biomass carbon powder small tablet press of the present invention;

Figure 3 is a schematic top view of the structure of the middle mold of the present invention;

Figure 4 is a schematic cross-sectional structural diagram of the middle mold of the present invention;

Among them: 1-loading and feeding mechanism, 2-forming, pressing and demoulding mechanism, 3-feeding bracket, 4-hopper, 5-feeding frame, 6-feeding cylinder, 7-first feeding guide rail, 8-frame, 9 -Middle mold cylinder, 10-middle template, 11-medium pressure plate, 12-cover plate, 13-border frame, 14-second feeding guide rail, 15-ejection slide rail, 16-ejection guide rail, 17-template hole, 18-stainless steel inner sleeve, 19-positioning hole, 20-upper template, 21-upper cylinder flange, 22-upper punch fixing plate, 23-upper positioning clamp plate, 24-upper slide block, 25-upper positioning column, 26-upper cylinder, 27-upper punch, 28-lower template, 29-lower cylinder flange, 30-lower punch fixed plate, 31-lower positioning clamp plate, 32-lower block, 33-lower positioning column, 34-lower cylinder, 35-lower punch, 36-stripping plate, 37-demoulding cylinder flange, 38-demoulding punch fixing plate, 39-demoulding cylinder, 40-demoulding punch, 41-demoulding Positioning column, 42-finished product receiving hopper.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of protection of the present invention.

The purpose of the present invention is to provide a small biomass carbon powder tablet press to solve the problems existing in the above-mentioned prior art and enable it to be used in the laboratory to continuously prepare shaped carbon with high density and strength.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4: This embodiment provides a small tablet press for biomass carbon powder, which includes a loading and feeding mechanism 1, a forming, pressing and demoulding mechanism 2. The loading and feeding mechanism 1 is arranged between the forming, pressing and demoulding mechanisms. The front side of the demoulding mechanism 2, where the front side is in the direction of raw material transportation. This embodiment also includes the separation and reassembly structures of the supporting hydraulic pump station and electrical control cabinet. In this embodiment, the hydraulic pump station adopts a 35-ton hydraulic pump station, and the hydraulic pump (25YCY14-1B) motor (Y112S-4P5.5KW) oil tank (150L) control valve meter is configured according to the 35-ton standard. The complete hydraulic system can be designed and installed by professional hydraulic accessories companies. The programmable controller in the electrical control cabinet adopts Delta products. The programmable controller can control four aspects: cylinder activity speed, working interval time, working stroke distance, and hydraulic working pressure. Other electrical accessories use Schneider products to form a high-quality and complete electrical control system. The key is high reliability and good stability. The electrical control cabinet adopts a combination of automatic and manual, and is equipped with a touch display screen and control buttons to facilitate setting, debugging and manual operation.

The loading and feeding mechanism 1 includes a feeding bracket 3, a hopper 4, a feeding frame 5 and a feeding cylinder 6. The feeding bracket 3 is made of δ6×50×100mm square steel welded and processed. The hopper 4 is set on the feeding bracket 3. For loading and feeding For mechanism 1, the left side in Figure 1 is the front side and the right side is the back side. The feeding frame 5 is provided with feeding slide rails (not shown in the figure) on the left and right sides, and the first feeding guide rails 7 are provided on the left and right sides of the feeding bracket 3. The feeding frame 5 is driven by the feeding cylinder 6 to move the hopper 4 into the The raw material (the raw material is a mixture of fine carbon powder and binder, moisture content: 25% ~ 30%) is fed to the middle mold of the molding pressing and demoulding mechanism 2, so that the raw material advances and evenly enters the molding hole to resolve the material Problems with accumulation and uneven feeding. The front half of the feeding frame 5 is open up and down, and the rear half of the feeding frame 5 is closed. The feeding cylinder 6 is set at the rear end of the feeding bracket 3. The piston rod of the feeding cylinder 6 is connected to the rear half of the feeding frame 5. The feeding frame 5 is located at the rear end of the feeding bracket 3. At one station (the first station means that the feeding frame 5 is located inside the frame 8 and on the upper side of the middle mold), the rear half of the feeding frame 5 can block the material opening of the hopper 4 to prevent material leakage. When the feeding frame 5 is located at the second station (the second station means that the feeding frame 5 is located inside the feeding bracket 3 and on the lower side of the hopper 4), the front half of the feeding frame 5 is located at the lower end of the material opening of the hopper 4. When the feeding frame 5 retreats to At the second station, a feeding conveyor belt adds raw materials to the hopper 4. The front end of the feeding frame 5 is provided with a rubber scraper, which is used to clean the remaining raw materials on the upper punch 27 of the upper mold.

The forming pressing and demoulding mechanism 2 includes a frame 8, upper mold, middle mold, lower mold, demoulding and middle mold oil cylinder 9. The frame 8 is welded with δ6×50×100 square steel, and parts with particularly high bearing capacity can be Welded 10~15mm thick plates are added to strengthen the frame to ensure that the frame can withstand 50 tons of hydraulic pressure without deformation. For parts with flatness and smoothness requirements, sheet metal splicing can be added after surface grinding. The frame 8 is arranged on the rear side of the feeding bracket 3, and the upper mold and the lower mold are arranged on the front side of the demoulding (for the molding, pressing and demoulding mechanism 2, the right side in Figure 1 is the front side, and the left side is the rear side), The middle mold is arranged between the upper mold and the lower mold, and both the upper mold and the demoulding mold are located on the upper side of the middle mold.

The middle mold includes a middle mold plate 10, a middle pressure plate 11 and a cover plate 12 arranged in sequence from bottom to top. The middle pressure plate 11 is provided with baffle frames 13 on three sides. The open side faces the loading and feeding mechanism 1, and the baffle frame 13 on the rear side As a limiting device for the feeding frame 5. The second feeding guide rails 14 are provided on the left and right side retaining frames 13. The second feeding guide rails 14 can be flush with the first feeding guide rail 7 and can be connected when the middle mold is located at the molding station; the left and right sides of the middle mold plate 10 are provided with There are demoulding slide rails 15, and demoulding guide rails 16 are provided on the left and right sides of the frame 8. The cylinder body of the middle mold oil cylinder 9 is arranged at the rear end of the frame 8. The piston rod of the middle mold oil cylinder 9 is connected with the middle mold. Driven by the middle mold oil cylinder 9, it can slide on the demoulding guide rail 16 and be aligned vertically with the upper mold or demoulding respectively. The middle mold limit plates can be provided at both the front and rear ends of the frame 8.

The middle template 10 can be provided with no more than ten template holes 17 . In this embodiment, the number of template holes 17 is five. One template hole 17 is provided in the center of the middle template 10 , and the remaining four template holes 17 Take the center of the middle template 10 as the center of the circle and distribute it uniformly. A stainless steel inner sleeve 18 is nested in each template hole 17. The upper edge of the stainless steel inner sleeve 18 is stuck between the intermediate pressure plate 11 and the cover plate 12. The intermediate pressure plate 11 is provided with a recess for accommodating the upper edge of the stainless steel inner sleeve 18. groove. The inner wall of the stainless steel inner sleeve 18 is polished, which is smooth and wear-resistant, and can reduce product sticking. In this embodiment, the outer dimensions of the middle plate 10 are: length 560×width 350×height 30mm, the cover plate 12 is 3mm thick, the middle pressure plate 11 is 15mm thick, and the actual height is 48mm. Stainless steel inner sleeve 18mm high 45mm. The diameter of the template hole 17 is Φ33mm. The interior of the stainless steel inner sleeve 18 can be selected as round or square. The shape of all punches must match the stainless steel inner sleeve 18.

Four positioning holes 19 are symmetrically provided on the middle mold. The two positioning holes 19 on the rear side match the two upper positioning posts 25 of the upper mold. The two positioning holes 19 on the front side match the two lower positioning posts of the lower mold. 33 matches, and all positioning holes 19 match the four demoulding positioning posts 41 of the demoulding.

The upper mold includes an upper template 20, an upper oil cylinder flange 21 and an upper punch fixing plate 22 connected by bolts. The left and right ends of the upper template 20 are connected with an upper slide block 24 through an upper positioning clamp plate 23. The upper slide block 24 is connected with the set The upper guide rail (not shown in the figure) on the frame 8 is slidingly connected, and the upper positioning column 25 is arranged on the lower side of the upper positioning clamp plate 23; the upper oil cylinder flange 21 is arranged on the upper side of the upper template 20, and the upper oil cylinder flange 21 It is connected with the piston rod of the upper oil cylinder 26 provided on the frame 8. Install the bracket part of the oil cylinder 26. The top plate of the oil cylinder is installed with δ35mm sheet material. The top surface and the surrounding frame are welded into a square reinforced structure. Square tubes and sheets are used as reinforcing ribs to increase the bearing capacity. The upper punch fixing plate 22 is arranged on the lower side of the upper template 20. The lower side of the upper punch fixing plate 22 is provided with upper punches 27 that are equal in number to the template holes 17. The upper punches 27 correspond to the stainless steel inner sleeve 18 one by one. The upper punch 27 can be in the shape of a concave spherical crown or a cuboid.

The lower mold includes a lower template 28, a lower oil cylinder flange 29 and a lower punch fixing plate 30 connected by bolts. The left and right ends of the lower template 28 are connected with lower blocks 32 through lower positioning clamps 31, and the lower blocks 32 are connected with the set The lower guide rail on the frame 8 is slidingly connected, and the lower positioning column 33 is set on the upper side of the lower positioning clamping plate 31; The piston rod of the oil cylinder 34 is connected, and the oil cylinder installation top plate of the lower oil cylinder 34 is welded and connected to the frame 8; the lower punch fixing plate 30 is arranged on the upper side of the upper template 20, and the upper side of the lower punch fixing plate 30 is provided with the template hole 17 There are an equal number of lower punches 35, and the lower punches 35 correspond to the stainless steel inner sleeve 18 one by one. The lower punch 35 can be selected as a stepped concave shape or a rectangular parallelepiped shape.

The demoulding includes a demoulding plate 36, a demoulding cylinder flange 37 and a demoulding punch fixing plate 38 connected by bolts. Since the demoulding pressure is small, there is no need to set up sliders and guide rails. The demoulding cylinder flange 37 is arranged on the upper side of the demoulding plate 36. The demoulding cylinder flange 37 is connected with the piston rod of the demoulding cylinder 39 arranged on the frame 8. The top plate of the demoulding cylinder 39 is welded to the frame 8. Connection; the demoulding punch fixed plate 38 is arranged on the lower side of the demoulding plate 36. The demoulding punch fixed plate 38 is provided with demoulding punches 40 equal to the number of template holes 17 on the lower side. The demoulding punch 40 is connected with the stainless steel inner The sets 18 correspond one to one; the demoulding positioning post 41 is arranged on the lower side of the demoulding punch fixing plate 38; the finished product receiving hopper 42 is provided on the lower side of the demoulding, and the finished product receiving hopper 42 is connected to the frame 8.

In this embodiment, the materials of the feeding slide rail, the first feeding guide rail 7, the second feeding guide rail 14, the demoulding slide rail 15, the demoulding guide rail 16, the upper slide block 24, the upper guide rail, the lower block 32 and the lower guide rail are made of copper or copper alloy. The feeding slide rail, the first feeding guide rail 7 and the second feeding guide rail 14, the demoulding slide rail 15 and the demoulding guide rail 16, the upper slide block 24 and the upper guide rail, and the lower block 32 and the lower guide rail adopt a concave and convex sliding structure. The upper punch 27, the lower punch 35 and the demoulding punch 40 are all made of 40Cr alloy steel. The surfaces of the upper punch 27, the lower punch 35 and the demoulding punch 40 are polished and then plated with hard chromium to reduce Adhesive residue of raw materials. The template holes 17 or punch mounting holes of the upper punch fixing plate 22, the middle template 10, the lower punch fixing plate 30 and the demoulding punch fixing plate 38 are processed together by the machining center to ensure the concentricity of the holes. The upper template 20 The upper, lower and surrounding sides of the middle template 10, the lower template 28 and the stripper 36 are subjected to finishing processing to ensure flatness and angular dimensions. The thickness of the upper template 20, the lower template 28 and the stripper 36 is preferably 32mm. The specification of the feeding cylinder 6 is 50*450mm, the specification of the upper cylinder 26 is 125*150mm, the specification of the lower cylinder 34 is 125*120mm, the specification of the middle mold cylinder 9 is 50*450mm, and the specification of the demoulding cylinder 39 is 63* 150mm. The startup and shutdown of all cylinders are controlled by solenoid valves. Use metal sensor signal to transmit to solenoid valve. The layout and circuit arrangement of the sensors must be installed concealed with safety protection tubes to ensure the safe operation of the equipment. Oil pipes, joints, valves, seals, and instrument configurations must be of high quality. It can withstand 35 tons of pressure without oil leakage or oil leakage. The quality of various sealing rings is key, and imported products can be used when necessary.

The method of using the biomass carbon powder small tablet press in this embodiment is:

Step 1: The middle mold is moved to the molding station and then locked, so that there is no deviation from the alignment of the upper and lower molds. The pressure of the upper oil cylinder 26 and the lower oil cylinder 34 is about 50 tons.

Step 2: Start the lower oil cylinder 34 of the lower mold, so that the lower punch 35 enters the template hole 17 by 7 to 10 mm and then locks. The upper and lower stroke of the lower mold is adjustable within 120mm.

Step 3: Start the feeding cylinder 6, and push the feeding frame 5 filled with raw materials to the first station on the cover plate 12 of the middle mold. The stroke of the feeding frame 5 is adjustable within 400mm. The feeding frame 5 puts the raw materials into the template hole 17, and quickly returns to the second station after being in place. At the same time, the rubber scraper cleans the surface of the upper punch 27, and the padding material in each template hole 17 of the middle template 10 is even and smooth. After the feeding frame 5 is reset, the feeding conveyor belt quickly feeds the material into the hopper 4.

Step 4: Start the upper oil cylinder 26. The stroke of the upper oil cylinder 26 is adjustable within 150mm. The upper mold is pressed down, and the upper punch 27 is pressed into the template hole 17 by approximately 20 to 30 mm. After the biomass carbon is pressed and formed, the upper mold and the lower mold are withdrawn into place at the same time and then locked.

Step 5: After completing the pressing process, start the middle mold cylinder 9. The stroke of the middle mold cylinder 9 is adjustable within 450mm. The middle mold plate 10 is moved to the demoulding station and then locked.

Step 6: Start the demoulding cylinder 39. The stroke of the demoulding cylinder 39 is adjustable within 150mm. The demoulding punch 40 presses down to demould the finished product in the template hole 17 to the finished product receiving hopper 42 below. When finished, quickly move back up to the top to lock.

Step 7: Start the middle mold cylinder 9 to move the middle mold forward to the forming position and then lock it. Repeat the previous six steps, and the entire production process proceeds in an orderly manner according to the set time. The intervals between each step are different, and the design requires that the above six steps be completed within 40 to 60 seconds to achieve the goal of continuous and stable production. The maximum working pressure is about 35 tons.

The high-strength columnar carbon produced by the biomass carbon powder small tablet press of this embodiment has a strength of not less than 95% and a density that is adjustable in the range of 0.65-1.2g/ ^cm3 .

This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, based on this The idea of the invention will be subject to change in the specific implementation and scope of application. In summary, the contents of this description should not be construed as limitations of the present invention.

Claims (9)

1. A small biomass carbon powder tablet press, which is characterized in that: the device comprises a feeding mechanism and a molding pressing and demolding mechanism, wherein the feeding mechanism is arranged at the front side of the molding pressing and demolding mechanism;

the feeding mechanism comprises a feeding support, a hopper, a feeding frame and a feeding oil cylinder, wherein the hopper is arranged on the feeding support, feeding sliding rails are arranged on the left side and the right side of the feeding frame, first feeding guide rails are arranged on the left side and the right side of the feeding support, and the feeding frame can feed raw materials in the hopper into the forming pressing and demolding mechanism under the driving of the feeding oil cylinder;

the molding pressing and demolding mechanism comprises a frame, an upper mold, a middle mold, a lower mold, a demolding and middle mold oil cylinder, wherein the frame is arranged at the rear side of the feeding bracket, the upper mold and the lower mold are arranged at the front side of demolding, the middle mold is arranged between the upper mold and the lower mold, and the upper mold and the demolding are both positioned at the upper side of the middle mold;

the middle die comprises a middle die plate, a middle pressing plate and a cover plate which are sequentially arranged from bottom to top, wherein three sides of the middle pressing plate are provided with a blocking frame, one side of the opening faces the feeding mechanism, the blocking frames on the left side and the right side are provided with second feeding guide rails, and the second feeding guide rails are flush with the first feeding guide rails and can be connected; the left side and the right side of the middle die plate are provided with demoulding slide rails, the left side and the right side of the frame are provided with demoulding guide rails, and the middle die can slide on the demoulding guide rails under the drive of the middle die oil cylinder and is respectively aligned with the upper die or the demoulding up and down;

the middle template is provided with no more than ten template holes, a stainless steel inner sleeve is nested in each template hole, and the upper edge of the stainless steel inner sleeve is clamped between the middle pressing plate and the cover plate; at least two positioning holes are symmetrically formed in the middle die, part of the positioning holes are matched with an upper positioning column of the upper die, the rest of the positioning holes are matched with a lower positioning column of the lower die, and all the positioning holes are matched with a demolding positioning column for demolding.

2. The small biomass charcoal tablet press of claim 1, wherein: the upper die comprises an upper die plate, an upper oil cylinder flange and an upper punch fixing plate which are connected through bolts, wherein the left end and the right end of the upper die plate are connected with upper sliding blocks through upper positioning clamping plates, the upper sliding blocks are in sliding connection with upper guide rails arranged on the machine frame, and the upper positioning columns are arranged on the lower sides of the upper positioning clamping plates; the upper oil cylinder flange is arranged on the upper side of the upper template and is connected with a piston rod of an upper oil cylinder arranged on the frame; the upper punch fixing plate is arranged on the lower side of the upper die plate, upper punches equal to the die plate holes in number are arranged on the lower side of the upper punch fixing plate, and the upper punches are in one-to-one correspondence with the stainless steel inner sleeves.

3. The small biomass charcoal tablet press of claim 2, wherein: the lower die comprises a lower die plate, a lower cylinder flange and a lower punch fixing plate which are connected through bolts, wherein the left end and the right end of the lower die plate are connected with lower sliding blocks through lower positioning clamping plates, the lower sliding blocks are in sliding connection with lower guide rails arranged on the frame, and the lower positioning columns are arranged on the upper sides of the lower positioning clamping plates; the lower oil cylinder flange is arranged on the lower side of the lower template and is connected with a piston rod of a lower oil cylinder arranged on the frame; the lower punch fixing plate is arranged on the upper side of the upper die plate, lower punches with the same number as the die plate holes are arranged on the upper side of the lower punch fixing plate, and the lower punches are in one-to-one correspondence with the stainless steel inner sleeves.

4. A compact biomass charcoal tablet press according to claim 3, characterized in that: the demolding device comprises a demolding plate, a demolding cylinder flange and a demolding punch fixing plate, wherein the demolding plate, the demolding cylinder flange and the demolding punch fixing plate are connected through bolts, the demolding cylinder flange is arranged on the upper side of the demolding plate, and the demolding cylinder flange is connected with a piston rod of a demolding cylinder arranged on the rack; the demoulding punch fixing plate is arranged on the lower side of the demoulding plate, demoulding punches with the same number as that of the template holes are arranged on the lower side of the demoulding punch fixing plate, and the demoulding punches are in one-to-one correspondence with the stainless steel inner sleeves; the demoulding positioning column is arranged at the lower side of the demoulding punch fixing plate; the lower side of drawing of patterns is provided with the finished product and connects the hopper, the finished product connects the hopper with the frame.

5. The small biomass charcoal tablet press of claim 4, wherein: the material of the feeding slide rail, the first feeding guide rail, the second feeding guide rail, the demolding slide rail, the demolding guide rail, the upper sliding block, the upper guide rail, the lower sliding block and the lower guide rail is copper or copper alloy.

6. The small biomass charcoal tablet press of claim 4, wherein: the upper punch, the lower punch and the demoulding punch are all made of 40Cr alloy steel, and the surfaces of the upper punch, the lower punch and the demoulding punch are subjected to polishing treatment and then are plated with hard chromium.

7. The small biomass charcoal tablet press of claim 1, wherein: the number of the template holes is five, one template hole is arranged at the center of the middle template, and the other four template holes are uniformly distributed by taking the center of the middle template as the center of the circle.

8. The small biomass charcoal tablet press of claim 1, wherein: the front end of the feeding frame is provided with a rubber scraper which is used for cleaning the raw materials remained on the upper punch of the upper die.

9. The small biomass charcoal tablet press of claim 1, wherein: the upper and lower openings of the front half part of the feeding frame are formed in the upper and lower openings of the front half part of the feeding frame, the rear half part of the feeding frame is closed, the feeding oil cylinder is arranged at one end of the feeding support, a piston rod of the feeding oil cylinder is connected with the rear half part of the feeding frame, the rear half part of the feeding frame can block a material opening of the hopper when the feeding frame is located at a first station, the front half part of the feeding frame is located at the lower end of the material opening of the hopper when the feeding frame is located at a second station, and a feeding conveying belt is arranged to add raw materials into the hopper when the feeding frame is retracted to the second station.