Pearl wool briquetting machine

By designing a pearl cotton briquetting machine that uses first cutting, low-temperature drying and stirring to cold pressing, the problems of uneven cold pressing and cracking in existing equipment are solved, and more efficient cold pressing and transportation density are achieved.

CN120023936APending Publication Date: 2025-05-23NINGBO XUHANG ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202510280874.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2025-05-23

AI Technical Summary

Technical Problem

The existing pearl cotton recycling equipment has problems such as uneven cutting, low cold pressing efficiency and prone to cracking after cold pressing, which affects the later transportation effect.

Method used

A pearl cotton briquetting machine is designed, which adopts the method of cutting first, then drying evenly at low temperature to remove moisture, softening at low temperature and stirring at low temperature, and finally cold pressing. The equipment includes a crimping cage frame, a crushing bin, a chopping mechanism, a stirring bin and a cold pressing briquetting mechanism. The cutting spindle is driven by a reducer motor, and the pearl cotton is cut with multiple cutting blades, and the stirring spindle is driven by a sprocket and chain for stirring and drying.

Benefits of technology

Through the treatment of this equipment, the pearl quilt is evenly cut and low-temperature treatment ensures uniformity of the cold pressing process, avoids cracking problems, and ultimately improves transportation density and convenience.

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Abstract

The pearl wool briquetting machine comprises a stranding cage frame, a smashing bin is arranged above the stranding cage frame, a feeding port is formed in the side edge of the smashing bin, a chopping mechanism used for chopping pearl wool is arranged in the smashing bin, one side of the stranding cage frame serves as a discharging port, and the other side of the stranding cage frame serves as a discharging port. The other side of the stranding cage frame is provided with a cold pressing briquetting mechanism used for conducting cold pressing on pearl wool conveyed by the chopping mechanism and then discharging the pearl wool from the discharging opening, a stirring bin communicating with the smashing bin and the stranding cage frame is arranged below the smashing bin, and a stirring mechanism and a heating pipe are arranged in the stirring bin; the chopping mechanism comprises a speed reducing motor, a cutting main shaft and cutting blades, the speed reducing motor is fixed to the outer side of the smashing bin, an output shaft of the speed reducing motor is connected with one end of the cutting main shaft through a coupler, the cutting main shaft is inserted into the smashing bin, and the cutting blades are arranged on the cutting main shaft at intervals; and the heating pipe is communicated with the low-temperature dryer. The structure is convenient for later transportation.
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Description

Technical Field

[0001] The invention relates to the technical field of pearl cotton recycling equipment, in particular to a pearl cotton briquetting machine. Background Art

[0002] Pearl cotton, also known as polyethylene foam, is a new type of environmentally friendly packaging material with a non-cross-linked closed-cell structure. It is composed of countless independent bubbles produced by physical foaming of low-density polyethylene resin. It overcomes the shortcomings of ordinary foamed plastics, such as fragility, deformation, and poor recovery. It has many advantages such as waterproof and moisture-proof, shockproof, sound insulation, heat preservation, good plasticity, strong toughness, recycling, environmental protection, strong impact resistance, and also has good chemical resistance. It is an ideal substitute for traditional packaging materials. Its application fields are very wide, mainly including the following aspects: electronic product packaging, fragile product packaging, food packaging, express packaging, construction and decoration industry and other application fields.

[0003] The recycled waste pearl cotton currently in use is generally transported by hot melting and then granulating, which leads to inconvenient transportation. In addition, hot melting requires heating, and unpleasant odors are easily generated during the hot melting process, resulting in environmentally unfriendly processing. Therefore, there is a fixed-length device for a foam plastic cold press machine disclosed in patent application number 201621340524.6. The structure drives the cutting knife downward to cut the product through a cylinder, but the structure has uneven cutting, and cold pressing is performed directly after cutting, which affects the efficiency of cold pressing molding. After cold pressing, it is easy to have problems such as insufficient cold pressing and cracking, which ultimately affects the later transportation. Summary of the invention

[0004] The purpose of the present invention is to provide a pearl cotton briquetting machine to solve the problem proposed in the above background technology that when cold pressing pearl cotton, a cutting knife needs to be driven downward by a cylinder to cut the product, but the structure has uneven cutting, and cold pressing is performed directly after cutting, which affects the efficiency of cold pressing molding. After cold pressing, the cold pressing is prone to cracking due to insufficient cold pressing, which ultimately affects the later transportation effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pearl cotton briquetting machine, comprising a cage frame, a crushing bin is arranged above the cage frame, a feeding port is arranged on the side of the crushing bin, a shredding mechanism for shredding the pearl cotton is arranged in the crushing bin, one side of the cage frame serves as a discharge port, and the other side of the cage frame is provided with a cold pressing briquetting mechanism for cold pressing the pearl cotton conveyed by the shredding mechanism and discharging it from the discharge port, a stirring bin connected to the crushing bin and the cage frame is arranged below the crushing bin, a stirring mechanism and a heating pipe are arranged in the stirring bin, and more than one blowing nozzle is distributed on the heating pipe, the shredding mechanism comprises a reduction motor, a cutting spindle and a cutting blade, the reduction motor is fixed on the outside of the crushing bin, the output shaft of the reduction motor is connected to one end of the cutting spindle through a coupling, the cutting spindle is inserted into the crushing bin, and more than one cutting blade is arranged on the cutting spindle at intervals, and the heating pipe is connected to a low-temperature dryer.

[0006] Preferably, in order to make the structure simpler and have fewer parts, a motor is used to control the stirring mechanism and the cutting mechanism to work simultaneously, thereby reducing costs. A sprocket one is provided after the other end of the cutting spindle extends out of the crushing bin. The stirring mechanism includes a stirring spindle and a stirring rod. The stirring spindle is rotatably inserted in the stirring bin, and more than one stirring rod is arranged on the stirring spindle at intervals, and each stirring rod has a different distribution angle. There is a stirring plate at the end of each stirring rod away from the stirring spindle. Sprocket two is connected to one end of the stirring spindle extending out of the stirring bin, a chain is provided between sprocket two and sprocket one, and a sprocket guard covering the chain, sprocket one and sprocket two is provided between the crushing bin and the stirring bin.

[0007] To improve the later cold pressing effect, the heating pipes are divided into two groups and are respectively arranged on the front and rear sides of the mixing bin, and an L-shaped heating conveying pipe connected to the two heating pipes is arranged on the outside of the crushing bin, and the other end of the L-shaped heating conveying pipe is connected to the heating fan, and the heating fan is fixed on the side of the crushing bin, and the other end of the heating fan is connected to the low-temperature dryer on the side of the crushing bin.

[0008] Preferably, the cold pressing briquetting mechanism includes an oil tank, an oil tank motor, an electromagnetic reversing valve, an oil cylinder barrel and a pressure head push plate. The oil tank is fixed above the cage frame. The oil tank motor and the electromagnetic reversing valve are fixed above the oil tank. The output shaft of the oil tank motor is connected to a plunger pump. One end of the plunger pump is connected to the oil tank, and the other end is connected to the oil cylinder barrel through the electromagnetic reversing valve. The oil cylinder barrel is fixed on one side of the cage frame. The cylinder rod on the cylinder barrel is inserted into the cage frame and connected to the pressure head push plate. A pressure head top plate is provided above the pressure head push plate, which can close the opening below the crushing bin when the stirring mechanism is working.

[0009] In order to facilitate operation, a gantry is arranged above the cage frame, and a control box for controlling the operation of the equipment is arranged on the gantry.

[0010] In order to ensure the stability of the pressure head push plate when it moves, a pressure head side plate is arranged on both the front and rear sides of the pressure head push plate, and the outer wall of the pressure head side plate is in contact with the inner wall of the cage frame.

[0011] In order to improve the heating effect, the heating tube is a square tube, and the blowing nozzles on the two square tubes are mirror-imaged and located on the inner side of the square tube.

[0012] Preferably, the cutting blade is a four-leaf blade.

[0013] Preferably, in order to facilitate the later cleaning of the mixing bin and avoid clogging of the mixing bin, the mixing bin is hinged with cover plates at the front and rear.

[0014] Compared with the prior art, the beneficial effect of the present invention is that the structure adopts the method of first cutting, then uniformly low-temperature drying to remove moisture, low-temperature softening and stirring, and finally cold pressing to further ensure uniform cold pressing, and ultimately facilitate later transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front structural schematic diagram of an EPE briquetting machine in this embodiment 1;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure when the sprocket guard is not installed and the sprocket two is separated from other components;

[0017] Figure 3 This is a schematic diagram of the back structure of an EPE briquetting machine in Example 1;

[0018] Figure 4 This is a structural schematic diagram of an EPE briquetting machine in Example 1 when the rear side plate is not installed on the cage frame and the rear side plate is not installed on the mixing bin;

[0019] Figure 5 This is a schematic diagram of the structure of the chopping mechanism and the stirring mechanism in this embodiment 1;

[0020] Figure 6 Schematic diagram of the combined structure of the pressure head side plate, pressure head top plate and pressure head push plate in this embodiment 1.

[0021] In the figure: cage frame 1, gantry 101, control box 102, stirring bin 2, cover plate 201, crushing bin 3, feed port 4, shredding mechanism 5, reduction motor 501, cutting spindle 502, cutting blade 503, discharge port 6, cold pressing briquetting mechanism 7, oil tank 701, oil tank motor 702, electromagnetic reversing valve 703, cylinder barrel 704, pressure head push plate 705, plunger pump 706, pressure head top plate 707, pressure head side plate 708, stirring mechanism 8, stirring spindle 801, stirring rod 802, stirring plate 803, sprocket two 804, chain 805, sprocket protective cover 806, heating pipe 9, blowing nozzle 10, coupling 11, sprocket one 12, L-shaped heating conveying pipe 13, heating fan 14, low temperature dryer 15. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] Example 1

[0025] See also Figure 1-Figure 6As shown, a pearl cotton briquetting machine disclosed in the present embodiment comprises a cage frame 1, a crushing bin 3 is arranged above the cage frame 1, a feeding port 4 is arranged on the side of the crushing bin 3, a chopping mechanism 5 for chopping the pearl cotton is arranged in the crushing bin 3, one side of the cage frame 1 is used as a discharge port 6, and the other side of the cage frame 1 is provided with a cold pressing briquetting mechanism 7 for cold pressing the pearl cotton conveyed by the chopping mechanism 5 and discharging it from the discharge port 6, a stirring bin 2 connected with the crushing bin 3 and the cage frame 1 is arranged below the crushing bin 3, so as to facilitate the later cleaning of the stirring bin 2 and avoid the clogging of the stirring bin 2, the front and rear of the stirring bin 2 are hinged with a cover plate 201, and the cover plate 201 can be opened later to clean the inside of the stirring bin 2, a stirring mechanism 8 and a heating tube 9 are arranged in the stirring bin 2, and more than one blowing nozzle 10 is distributed on the heating tube 9, the chopping mechanism 5 comprises a reduction motor 501, a cutting spindle 502 and a cutting blade 503, the reduction motor 501 is fixed on the outside of the crushing bin 3, the output shaft of the reduction motor 501 is connected to one end of the cutting spindle 502 through a coupling 11, the cutting spindle 502 is inserted into the crushing bin 3, and more than one cutting blade 503 is arranged on the cutting spindle 502 at intervals, the heating tube 9 is connected to a low-temperature dryer 15, the heating temperature of the low-temperature dryer 15 is controlled at about 60 degrees to prevent the product surface from having moisture and being difficult to shape, and the low-temperature dryer 15 is used to realize low-temperature softening of the pearl cotton. Since the lower temperature does not produce odor and harmful substances, it is more environmentally friendly and convenient for the compression of the later oil cylinder, and the cutting blade 503 is a four-leaf blade. For the convenience of operation, a gantry 101 is arranged above the cage frame 1, and a control box 102 for controlling the operation of the equipment is arranged on the gantry 101, and the control box 102 is electrically connected to the reduction motor 501, the oil tank motor 702, and the electromagnetic reversing valve 703 to realize the electrical control of each device.

[0026] Preferably, in order to make the structure simpler and have fewer parts, a motor is used to control the stirring mechanism and the cutting mechanism to work simultaneously, thereby reducing costs. After the other end of the cutting spindle 502 extends out of the crushing bin 3, a sprocket 12 is provided. The stirring mechanism 8 includes a stirring spindle 801 and a stirring rod 802. The stirring spindle 801 is rotatably inserted into the stirring bin 2, and more than one stirring rod 802 is arranged on the stirring spindle 801 at intervals, and each stirring rod 802 has a different distribution angle. At one end of each stirring rod 802 away from the stirring spindle 801, a stirring plate 803 is provided. After one end of the stirring spindle 801 extends out of the stirring bin 2, a sprocket 2 804 is connected. A chain 805 is provided between the sprocket 2 804 and the sprocket 12. A sprocket guard 806 is provided between the crushing bin 3 and the stirring bin 2 to cover the chain 805, the sprocket 12 and the sprocket 2 804.

[0027] To improve the cold pressing effect in the later stage, the heating pipe 9 is divided into two groups and respectively arranged on the front and rear sides of the mixing bin 2, and an L-shaped heating conveying pipe 13 connected to the two heating pipes 9 is arranged on the outside of the crushing bin 3, and the other end of the L-shaped heating conveying pipe 13 is connected to the heating fan 14, and the heating fan 14 is fixed on the side of the crushing bin 3, and the other end of the heating fan 14 is connected to the low-temperature dryer 15 on the side of the crushing bin 3. In order to improve the heating effect, the heating pipe 9 is a square tube, and the blowing The air nozzle 10 is mirror-set and located on the inner side of the square tube. In this structure, two sets of mirror-set heating tubes 9 are added to the mixing chamber 2, and the heating tubes 9 are provided with an air blowing nozzle 10. The heating fan 14 is used to absorb the external cold air, and when it is heated to a preset temperature through a low-temperature dryer 15, the heating fan 14 is used to transport the hot air to the heating tube 9 through an L-shaped heating delivery pipe 13, and then the hot air is blown out from the air blowing nozzle 10, and then the crushed pearl cotton in the mixing chamber 2 is heated and then transported to the bottom, so as to facilitate more uniform cold pressing in the later stage.

[0028] Preferably, the cold pressing briquetting mechanism 7 comprises an oil tank 701, an oil tank motor 702, an electromagnetic reversing valve 703, an oil cylinder barrel 704 and a pressure head push plate 705, wherein the oil tank 701 is fixed above the cage frame 1, the oil tank motor 702 and the electromagnetic reversing valve 703 are fixed above the oil tank 701, and the output shaft of the oil tank motor 702 is connected to a plunger pump 706, one end of the plunger pump 706 is connected to the oil tank 701, and the other end is connected to the oil cylinder barrel 704 through the electromagnetic reversing valve 703, The oil cylinder barrel 704 is fixed on one side of the cage frame 1, and the oil cylinder rod on the oil cylinder barrel 704 is inserted into the cage frame 1 and connected with the pressure head push plate 705. A pressure head top plate 707 is arranged above the pressure head push plate 705, which can close the opening below the crushing bin 3 when the stirring mechanism 8 is working. In order to ensure the stability of the pressure head push plate 705 when it moves, a pressure head side plate 708 is arranged on the front and rear sides of the pressure head push plate 705, and the outer wall of the pressure head side plate 708 is in contact with the inner wall of the cage frame 1.

[0029] It should also be noted that the specific models of the oil tank 701, oil tank motor 702, solenoid reversing valve 703, oil cylinder barrel 704, plunger pump 706, and how the oil tank motor 702 controls the plunger pump 706 to realize the operation of the oil cylinder barrel 704 belong to conventional technologies in the field and are therefore not described in detail.

[0030] The working principle of this structure is as follows: after the recycled pearl cotton enters from the feed port 4, the reduction motor 501 is started to work, the reduction motor 501 drives the cutting spindle 502 to rotate, and then the pearl cotton in the crushing bin 3 is cut and crushed by using multiple cutting blades 503, and the cutting efficiency is further improved by setting multiple cutting blades 503 (the cutting blade 503 is a four-leaf blade), ensuring that the cutting is more uniform, while cutting, the sprocket 12, the chain 805 and the sprocket 2 804 are used to synchronously drive the stirring spindle 801 to rotate, and after synchronously driving the stirring rods 802 at different angles to rotate, the stirring plate 803 is used to cut the pearl cotton after cutting. The pearl cotton is stirred (during the stirring process, the pressure head top plate 707 below closes the opening below the crushing bin 3), and during the stirring process, the heating tube 9 cooperates with the blowing nozzle 10 to blow low-temperature hot air to evenly dry the pearl cotton in the stirring bin 2 and heat it, so as to prevent the problem of moisture on the surface of the product and the problem of being difficult to shape. At the same time, a low-temperature dryer 15 is used to melt the pearl cotton at a low temperature. Since the low temperature does not produce odor and harmful substances, environmental protection is achieved; and the pearl cotton crushed material is softened at a low temperature to make it lose its elasticity (heated), which is convenient for subsequent exhaust during the compression process, and finally the compression ratio is guaranteed to be improved;

[0031] When the stirring is completed, the oil cylinder barrel 704 is driven to work, and the pressure head push plate 705 is first moved toward the oil cylinder barrel 704 to expose the opening below the crushing bin 3, and the heated and stirred pearl cotton is dropped from the bottom of the crushing bin 3 into the cage frame 1, and then the oil cylinder barrel 704 is driven to continue working, and the pressure head push plate 705 is pushed toward the discharge port 6 on the other side, and is shaped by the bin body of the cage frame 1 for a period of time and then pushed out from the discharge port 6, so that the low-temperature softened pearl cotton is squeezed by high pressure and discharged from the discharge port 6;

[0032] Therefore, the structure adopts the method of cutting first, then evenly drying at low temperature to remove moisture, softening at low temperature and stirring, and finally cold pressing with an oil cylinder to further ensure uniform cold pressing, and melt the pearl cotton at low temperature. Since the lower temperature will not produce odor and harmful substances, environmental protection is achieved; and the pearl cotton crushed material is softened at low temperature to make it (heated) lose its elasticity, which is convenient for subsequent exhaust during the compression process, and ultimately ensures that the compression ratio is improved; ensures that the later extrusion molding effect is better and ultimately facilitates later transportation, and at the same time can ensure that the later extrusion molding effect is better, and since the method of evenly heating and stirring after cutting is adopted, the problem of cracking due to inadequate cold pressing (due to uneven cutting and different particle sizes) can be further avoided.

[0033] The compression ratio of this structure can reach 30:1. Through crushing, drying and softening, and finally compression through the oil cylinder, the compression ratio can be guaranteed to be 30:1, while the compression ratio of ordinary equipment can only reach 2:1. Experiments have proved that the density of normal pearl cotton is 20 to 30 kg / cubic meter per cubic meter. After compression through this structure, the density is about 600 to 800 kg / cubic meter, making the compression tighter and easier to transport.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pearl cotton briquetting machine, comprising a cage frame (1), characterized in that: A crushing bin (3) is arranged above the cage frame (1), a feeding port (4) is arranged on the side of the crushing bin (3), a shredding mechanism (5) for shredding the pearl cotton is arranged in the crushing bin (3), one side of the cage frame (1) serves as a discharge port (6), and a cold pressing briquetting mechanism (7) is arranged on the other side of the cage frame (1) for cold pressing the pearl cotton delivered by the shredding mechanism (5) and discharging it from the discharge port (6), and a stirring bin (2) connected to the crushing bin (3) and the cage frame (1) is arranged below the crushing bin (3), and a stirring mechanism (8) is arranged in the stirring bin (2) to and a heating tube (9), wherein the heating tube (9) is provided with one or more blowing nozzles (10), the shredding mechanism (5) comprises a reduction motor (501), a cutting spindle (502) and a cutting blade (503), the reduction motor (501) is fixed on the outside of the shredding bin (3), the output shaft of the reduction motor (501) is connected to one end of the cutting spindle (502) through a coupling (11), the cutting spindle (502) is inserted into the shredding bin (3), and one or more cutting blades (503) are arranged at intervals on the cutting spindle (502), and the heating tube (9) is connected to a low-temperature dryer (15).

2. The pearl cotton briquetting machine according to claim 1, characterized in that: The other end of the cutting spindle (502) extends out of the crushing bin (3) and is provided with a sprocket wheel (12). The stirring mechanism (8) comprises a stirring spindle (801) and a stirring rod (802). The stirring spindle (801) is rotatably inserted into the stirring bin (2). More than one stirring rod (802) is arranged on the stirring spindle (801) at intervals, and each stirring rod (802) has a different distribution angle. 2) A stirring plate (803) is provided at one end away from the stirring main shaft (801); one end of the stirring main shaft (801) extends out of the stirring chamber (2) and is connected to a second sprocket (804); a chain (805) is provided between the second sprocket (804) and the first sprocket (12); and a sprocket protective cover (806) is provided between the crushing chamber (3) and the stirring chamber (2) to cover the chain (805), the first sprocket (12) and the second sprocket (804).

3. The pearl cotton briquetting machine according to claim 1 or 2, characterized in that: The heating pipes (9) are in two groups and are respectively arranged on the front and rear sides of the mixing chamber (2), and an L-shaped heating conveying pipe (13) connected to the two heating pipes (9) is arranged on the outside of the crushing chamber (3), and the other end of the L-shaped heating conveying pipe (13) is connected to a heating fan (14), and the heating fan (14) is fixed on the side of the crushing chamber (3), and the other end of the heating fan (14) is connected to a low-temperature dryer (15) on the side of the crushing chamber (3).

4. The pearl cotton briquetting machine according to claim 3, characterized in that: The cold pressing block mechanism (7) comprises an oil tank (701), an oil tank motor (702), an electromagnetic reversing valve (703), an oil cylinder barrel (704) and a pressure head push plate (705); the oil tank (701) is fixed above the cage frame (1); the oil tank motor (702) and the electromagnetic reversing valve (703) are fixed above the oil tank (701); and the output shaft of the oil tank motor (702) is connected to a plunger pump (706); one end of the plunger pump (706) is connected to the plunger pump (706). The oil tank (701) is connected to the oil tank (701), and the other end is connected to the oil cylinder barrel (704) through the electromagnetic reversing valve (703). The oil cylinder barrel (704) is fixed to one side of the cage frame (1). The oil cylinder rod on the oil cylinder barrel (704) is inserted into the cage frame (1) and connected to the pressure head push plate (705). A pressure head top plate (707) is arranged above the pressure head push plate (705) and can close the opening below the crushing bin (3) when the stirring mechanism (8) is working.

5. The pearl cotton briquetting machine according to claim 4, characterized in that: A gantry (101) is arranged above the cage frame (1), and a control box (102) for controlling the operation of equipment is arranged on the gantry (101).

6. The pearl cotton briquetting machine according to claim 4, characterized in that: A pressure head side plate (708) is provided on both the front and rear sides of the pressure head push plate (705), and the outer wall of the pressure head side plate (708) is in contact with the inner wall of the cage frame (1).

7. The pearl cotton briquetting machine according to claim 3, characterized in that: The heating tube (9) is a square tube, and the blowing nozzles (10) on the two square tubes are arranged in a mirror image and are located on the inner side of the square tube.

8. The pearl cotton briquetting machine according to claim 1 or 2, characterized in that: The cutting blade (503) is a four-blade blade.

9. The pearl cotton briquetting machine according to claim 1 or 2, characterized in that: The mixing bin (2) is hingedly provided with cover plates (201) at the front and rear ends.

Citation Information

Patent Citations

  • Fixed length equipment of foamed plastic cold press

    CN206383193U