Waste gypsum board paper removal system and paper removal method

Abstract

The present invention discloses a waste gypsum board paper removal system and paper removal method. The waste gypsum board paper removal system comprises a board core crushing device and a screening device; the board core crushing device is used to crush the board core of the waste gypsum board without crushing the facing paper of the waste gypsum board, and the screening device is used to screen the crushed board core from the uncrushed facing paper. The waste gypsum board paper removal system and paper removal method can achieve complete separation of the board core and the facing paper, which is beneficial to the reuse of waste gypsum boards. Furthermore, the manual crushing process of waste gypsum boards is omitted, and the waste gypsum board processing is fully automated, which improves production efficiency and saves production costs.

Description

Technical Field

[0001] The invention is used in the field of waste board utilization in gypsum board production, and particularly relates to a waste gypsum board paper removal system and paper removal method. Background Art

[0002] With the development of society, people's living standards and aesthetics are constantly improving. As one of the main decorative building materials, the amount of gypsum board is increasing. However, due to paper breakage, over-fire and other reasons, a certain amount of unqualified products will be produced in the production process of gypsum board, accounting for 1-5%, resulting in a large amount of manpower, material and financial waste. At present, most gypsum board factories make waste gypsum board into pads for gypsum board products, or crush the waste board and grind it into accelerators for use, or crush the waste board and mix it with desulfurized gypsum raw materials in a certain proportion and calcine it to prepare mature materials.

[0003] There are two ways to recycle waste gypsum boards: crushing the waste boards and grinding them into accelerators or mixing them with desulfurized gypsum raw materials in proportion and calcining them to prepare clinker. Gypsum is an air-hardening gelling material. It is difficult to completely separate the facing paper from the gypsum board core. The remaining facing paper is ground by a ball mill and remains in the coagulant or clinker as small pieces of paper scraps. When the paper scraps enter the gypsum board product, they will greatly reduce the flexural and compressive strength of the gypsum board and increase the product failure rate.

[0004] The board crusher currently used in the factory can crush the waste gypsum board, but it is difficult to screen out the fine paper scraps and some facing paper stuck to the gypsum board core. This part of the facing paper enters the gypsum board product and will reduce the flexural and compressive strength of the gypsum board. Therefore, it is very necessary to design a device that can completely remove the facing paper. Summary of the invention

[0005] The invention provides a waste gypsum board paper removal system and paper removal method, which solve the problem of completely separating the facing paper and the board core of the waste gypsum board. The method breaks the waste gypsum board by hammering or squeezing, and then completely separates the board core and the facing paper by screening.

[0006] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is as follows:

[0007] A waste gypsum board paper removal system, comprising a board core crushing device and a screening device, wherein the board core crushing device is used to crush the board core of the waste gypsum board without crushing the face paper of the waste gypsum board;

[0008] The screening device is used to screen the crushed board core and the uncrushed facing paper.

[0009] The waste gypsum board paper removal system also includes a board placement table, which is used to place waste gypsum boards; the board core crushing equipment includes a working surface for applying crushing force to the board core of the waste gypsum board placed on the board placement table, and the working surface is parallel to the table surface of the board placement table.

[0010] The board core crushing equipment includes a hammering machine that can hammer the waste gypsum board placed on the board placement table, the hammering machine includes two hammering blocks, a flexible connector and a support column, the flexible connector bypasses the support column, and the two ends are respectively connected to the two hammering blocks; the lower end surface of the hammering block is the working surface; the hammering block can perform surface hammering on the waste gypsum board placed on the board placement table, and the size of the working surface is equal to the size of the board placement table during the surface hammering.

[0011] Optionally, the core crushing equipment includes a hammering machine that can hammer the waste gypsum board placed on the board placement table, and the hammering machine includes one or more hammering blocks that can move up and down, and the lower end surface of the hammering block is the working surface.

[0012] Specifically, the hammering machine includes two hammering blocks, a flexible connector and a support column. The flexible connector bypasses the support column, and both ends of the flexible connector are respectively connected to the two hammering blocks, so that one hammering block moves upward and the other hammering block moves downward.

[0013] Optionally, the board core crushing equipment includes an extruder that can extrude the waste gypsum board placed on the board placement table, and the extruder includes an extrusion block that can move up and down, and the lower end surface of the extrusion block is the working surface.

[0014] Optionally, the board core crushing equipment includes an extruder that can extrude the waste gypsum board placed on the board placement table, the extruder includes an extrusion roller, the rolling axis of the extrusion roller is parallel to the table surface of the board placement table, and the circumferential surface of the extrusion roller is a working surface for applying crushing force to the core of the waste gypsum board placed on the board placement table.

[0015] Optionally, the core crushing equipment includes an extruder that can extrude the waste gypsum board, and the extruder includes two extrusion rollers correspondingly arranged in the upper and lower parts, the rolling axes of the two extrusion rollers are parallel to each other, and the circumferential surfaces of the two extrusion rollers are working surfaces for applying crushing force to the core of the waste gypsum board.

[0016] Optionally, the minimum distance between the working surfaces of the two squeezing rollers is set to be 2-6 mm smaller than the thickness of the waste gypsum board, preferably 4-6 mm.

[0017] Optionally, the core crushing equipment further comprises a driving device, which provides power for the hammer or the extruder.

[0018] Optionally, the waste gypsum board paper removal system further comprises an automatic board loader, and the automatic board loader is used to load the board core crushing equipment.

[0019] Optionally, the waste gypsum board depapering system further comprises a broken board collector, and the broken board collector is arranged between the board core crushing equipment and the screening device.

[0020] Optionally, the waste gypsum board paper removal system further comprises a board core collector for collecting the board core screened by the screening device and a waste paper collector for collecting the facing paper screened by the screening device.

[0021] Optionally, the waste gypsum board paper removal system further comprises a dust collecting device, and the dust collecting device is arranged around the screening device.

[0022] A method for removing paper from waste gypsum board comprises the following steps:

[0023] Hammering the waste gypsum board to crush the core of the waste gypsum board without crushing the facing paper of the waste gypsum board;

[0024] The crushed core of the waste gypsum board and the uncrushed facing paper are sieved and separated.

[0025] After adopting the above technical solution, the present invention has the following beneficial effects:

[0026] 1. In the waste gypsum board paper removal system, when the board core crushing equipment applies pressure to crush the waste gypsum board, the facing paper on the waste gypsum board can be completely retained while the board core is crushed, and then the crushed board core of the waste gypsum board and the facing paper of the waste gypsum board can be completely separated through screening by the screening device.

[0027] 2. The waste gypsum board paper removal system may also include a board placement table, on which the waste gypsum board is placed flat, and the working surface of the board core crushing equipment is parallel to the table surface of the board placement table. In this way, when the board core crushing equipment applies pressure to crush the waste gypsum board, it can ensure that the force surface of the waste gypsum board is larger, so that while the board core is crushed, the facing paper can be kept intact, which is convenient for screening and separation of the board core and the facing paper.

[0028] 3. In the waste gypsum board paper removal system, the board core crushing equipment includes a hammering machine that can hammer the waste gypsum board placed on the board placement table. The hammering machine includes one or more hammering blocks that can move up and down. The hammering blocks can crush the waste gypsum board placed on the board placement table with the help of their own weight, thereby saving energy consumption. One or more hammering blocks that can move up and down are provided to ensure that different waste gypsum boards can be crushed as needed. Furthermore, multiple hammering blocks can improve the crushing efficiency of the waste gypsum boards.

[0029] In a specific example, the hammering machine includes two hammering blocks, a flexible connector and a support column. The flexible connector bypasses the support column and is connected to the two hammering blocks at both ends, so that one hammering block moves upward and the other hammering block moves downward. The waste gypsum boards placed on the board placement table can be alternately crushed, thereby improving work efficiency and saving production costs.

[0030] 4. In the waste gypsum board paper removal system, the board core crushing equipment may include an extruder that can extrude the waste gypsum board placed on the board placement table, the extruder includes an extrusion block that can move up and down, and the lower end surface of the extrusion block is a working surface;

[0031] Alternatively, the extruder includes an extrusion roller, the rolling axis of the extrusion roller is parallel to the table surface of the board placement table, and the circumferential surface of the extrusion roller is a working surface for applying a crushing force to the core of the waste gypsum board placed on the board placement table;

[0032] Alternatively, the core crushing equipment includes an extruder that can directly extrude the waste gypsum board, the extruder includes two extrusion rollers correspondingly arranged up and down, the rolling axes of the two extrusion rollers are parallel to each other, and the circumferential surfaces of the two extrusion rollers are working surfaces that apply crushing force to the core of the waste gypsum board.

[0033] Through any of the above settings, during the process of crushing the waste gypsum board by the extruder, it is possible to prevent the core fragments of the board from splashing around the working area, and to prevent the generation of gypsum dust during the crushing process to the greatest extent possible, thereby preventing environmental pollution.

[0034] 5. The waste gypsum board paper removal system also includes an automatic board loading machine, which may include a control module, a lifting platform and a board pushing rod. The control module controls the lifting platform and the board pushing rod to coordinate with each other to load the board onto the board placement table. The loading end of the automatic board loading machine is connected to the gypsum board production line, and the unloading end of the automatic board loading machine is connected to the loading end of the board placement table.

[0035] Through the above settings, fully automated and continuous operations of gypsum board production and waste gypsum board processing can be achieved, greatly saving manpower and costs.

[0036] 6. The waste gypsum board paper removal system also includes a board core collector and a waste paper collector, which are respectively used to collect the board core and the facing paper screened out by the screening device, so as to realize the timely collection and thorough separation of the board core and the facing paper after the waste gypsum board is crushed and screened, and provide the production line with waste gypsum board materials without paper scraps, so as to realize the efficient recycling of waste gypsum board.

[0037] 7. The waste gypsum board paper removal system also includes dust collection equipment, which is installed around the screening device that is prone to generate dust. The gypsum dust generated during the screening process can be cleaned in time to ensure that the dust will not pollute the production environment.

[0038] 8. A method for removing paper from waste gypsum boards, comprising: hammering or squeezing the waste gypsum boards to crush the core of the waste gypsum boards without crushing the facing paper of the waste gypsum boards; and screening and separating the crushed core of the waste gypsum boards and the uncrushed facing paper. The paper removal steps are simple and easy to be implemented by technicians in the field, and the technical effect of removing the facing paper from the waste gypsum boards is obvious.

[0039] Other features and advantages of the present invention will be set forth in the description which follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0041] Figure 1 This is a schematic structural diagram of a waste gypsum board paper removal system according to Embodiment 1 of the present invention;

[0042] Figure 2 It is a working schematic diagram of the hammering machine according to the first embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the working process of the waste gypsum board paper removal system.

[0044] Reference numerals:

[0045] 1. Board placement table; 2. Board core crushing equipment; 21. Working surface; 22. Driving device; 3. Screening device; 4. Waste gypsum board; 5. Cone beating machine; 51. Cone beating block; 52. Flexible connector; 53. Support column; 6. Automatic board loading machine; 61. Lifting platform; 62. Board pushing rod; 7. Broken board collector; 8. Board core collector; 9. Waste paper collector. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0047] In the following description, many specific details are set forth to facilitate a full understanding of this document. However, this document may also be implemented in other ways different from those described herein. Therefore, the protection scope of this document is not limited to the specific embodiments disclosed below.

[0048] Embodiment 1:

[0049] like Figure 1 As shown, a waste gypsum board paper removal system includes a board placement table 1, a board core crushing device 2 and a screening device 3. The board placement table 1 is used to place waste gypsum boards 4, and the waste gypsum boards 4 include a board core and a face paper. The board core crushing device 2 is used to crush the waste gypsum boards 4 placed flat on the board placement table 1. The board core crushing device 2 includes a working surface 21 for applying pressure. The working surface 21 is parallel to the table surface of the board placement table 1. When the board core crushing device 2 applies pressure to the waste gypsum board 4, it is ensured that the core of the waste gypsum board is crushed while the face paper is not crushed. The screening device 3 is placed downstream of the board core crushing device 2. The screening device 3 can be an oscillating screen or a drum screen or other types of screening devices for screening the board core and the face paper. The present invention can achieve complete separation of the crushed board core and the face paper of the waste gypsum board 4.

[0050] Alternatively, if Figure 1 , Figure 2 As shown, in the waste gypsum board paper removal system, the board core crushing equipment 2 includes a hammering machine 5 that can hammer the waste gypsum board 4 placed on the board placement table 1, and the hammering machine 5 includes one or more hammering blocks 51 that can move up and down, and the lower end surface of the hammering block 51 is a working surface 21. The hammering block 51 can crush the waste gypsum board 4 placed on the board placement table 1 with the help of its own weight, thereby achieving the effect of saving energy consumption; one or more hammering blocks 51 that can move up and down are provided to ensure that the waste gypsum board 4 can be crushed as needed, and further, multiple hammering blocks 51 can improve the crushing efficiency of the waste gypsum board 4.

[0051] Alternatively, if Figure 2 As shown, the hammering machine 5 includes two hammering blocks 51, a flexible connector 52 and a support column 53. The flexible connector 52 bypasses the support column 53, and both ends are connected to the two hammering blocks 51. Through the above arrangement, during the process of the core crushing device 2 crushing the waste gypsum board 4, one hammering block 51 can be moved upward and the other hammering block 51 can be moved downward, so that the waste gypsum board 4 placed on the board placement table 1 can be alternately crushed, thereby improving work efficiency and saving production costs.

[0052] Alternatively, if Figure 2 As shown, the hammering block 51 of the hammering machine 5 can perform surface hammering or scattered point hammering on the waste gypsum board 4 placed on the board placement table 1. Surface hammering is to use the hammering block 51 to hammer the waste gypsum board 4 in a surface manner, and the size of the working surface 21 is roughly equal to the size of the table top of the board placement table 1, such as the width of the working surface 21 can be 1200mm, and the length of the working surface 21 can be 100mm; scattered point hammering is to use the hammering block 51 to hammer the waste gypsum board 4 in a point manner, and the size of the working surface 21 is smaller than the size of the table top of the board placement table 1, such as the width of the working surface 21 can be less than 1200mm, and the length is less than the length of the gypsum board placement table 1, and the waste gypsum board 4 is broken by rapid electric hammering.

[0053] Alternatively, if Figure 1 As shown, in the waste gypsum board paper removal system, the board core crushing equipment 2 also includes a driving device 22, which provides power for the hammer machine 5 to realize the up and down movement of the hammer block 51 to crush the waste gypsum board 4 placed on the board placement table 1.

[0054] Alternatively, if Figure 1 As shown, the waste gypsum board paper removal system also includes an automatic board loader 6, which is arranged upstream of the board placement table 1. The automatic board loader 6 includes a control module, a lifting platform 61 and a pushing rod 62. The lifting platform 61 can be an automatic lifting platform. The control module controls the lifting platform 61 and the pushing rod 62 to coordinate with each other to load the board placement table 1.

[0055] Optionally, the loading end of the automatic loading machine 6 is connected to the gypsum board production line, and the unloading end of the automatic loading machine 6 is connected to the loading end of the board placement platform 1. In the gypsum board production process, unqualified products are stacked and transported to the lifting platform 61 of the automatic loading machine 6 of the waste gypsum board paper removal system, and the waste gypsum board 4 is pushed to the board placement platform 1 for crushing through the telescopic movement of the pushing rod 62.

[0056] Through the above settings, fully automated and continuous operations of gypsum board production and waste gypsum board 4 processing can be achieved, greatly saving manpower and costs.

[0057] Alternatively, if Figure 1 As shown, the waste gypsum board de-papering system further includes a broken board collector 7, which is disposed between the board placement platform 1 and the screening device 3 and is used to collect and store the broken waste gypsum boards 4 on the board placement platform 1. Furthermore, the broken waste gypsum boards 4 can be reasonably added to the screening device 3 according to the working state of the screening device 3.

[0058] Alternatively, if Figure 1As shown, the waste gypsum board paper removal system also includes a board core collector 8 and a waste paper collector 9. The board core collector 8 and the waste paper collector 9 are placed downstream of the screening device 3, and are respectively used to collect the board core and the facing paper screened by the screening device 3, so as to realize the timely collection and complete separation of the board core and the facing paper after the waste gypsum board 4 is crushed and screened.

[0059] Optionally, the waste gypsum board de-papering system further includes a dust collecting device, which is arranged around the screening device 3 that is prone to generate dust, and can timely clean the gypsum dust generated during the screening process to ensure that the dust does not pollute the production environment. One or more dust collecting devices may be provided.

[0060] like Figure 3 As shown, this embodiment also provides a method for removing paper from waste gypsum board, comprising the following steps:

[0061] Hammering or squeezing the waste gypsum board 4 so that the core of the waste gypsum board 4 is crushed while the facing paper of the waste gypsum board is not crushed;

[0062] The crushed board core and the uncrushed facing paper of the waste gypsum board 4 are sieved and separated.

[0063] Optionally, the method for removing paper from waste gypsum boards may further include: collecting the sieved and separated board core and facing paper.

[0064] The waste gypsum board paper removal system and paper removal method in this embodiment can completely separate the board core and the facing paper of the waste gypsum board 4, which is beneficial to the recycling of the waste gypsum board. At the same time, it can minimize the pollution of dust to the environment during the waste gypsum board paper removal process. Furthermore, the waste gypsum board paper removal system is connected to the gypsum production line, which can realize the fully automated and continuous operation of gypsum board production and waste gypsum board 4 processing, greatly saving manpower and cost.

[0065] Embodiment 2:

[0066] The main difference between the second embodiment and the first embodiment lies in the core crushing device 2.

[0067] In a waste gypsum board paper removal system of the present embodiment, the board core crushing device 2 includes an extruder that can extrude the waste gypsum board 4 placed on the board placement table 1, and the extruder includes an extrusion block that can move up and down, and the lower end surface of the extrusion block is a working surface 21. When the extrusion block moves downward, the extrusion block crushes the waste gypsum board 4.

[0068] Alternatively, if Figure 1 As shown, in the waste gypsum board de-papering system, the board core crushing device 2 also includes a driving device 22, which provides power for the extruder to realize the up and down movement of the extrusion block to crush the waste gypsum board 4 placed on the board placement table 1.

[0069] Through the above arrangement, it is possible to prevent the core fragments from splashing around the plate placing table 1, and at the same time, it is possible to prevent gypsum dust from being generated during the crushing process to the greatest extent, thereby preventing environmental pollution.

[0070] Embodiment three:

[0071] The main difference between the third embodiment and the second embodiment lies in the core crushing device 2.

[0072] In a waste gypsum board paper removal system of the present embodiment, the board core crushing equipment 2 includes an extruder that can extrude the waste gypsum board 4 placed on the board placement table 1, and the extruder includes an extrusion roller, the rolling axis of the extrusion roller is parallel to the table surface of the board placement table 1, and the circumferential surface of the extrusion roller is a working surface for applying a crushing force to the board core of the waste gypsum board 4 placed on the board placement table 1. When the extrusion roller moves left and right, forward and backward, or in a circle on the board placement table 1, the extrusion roller crushes the waste gypsum board 4.

[0073] Alternatively, if Figure 1 As shown, in the waste gypsum board paper removal system, the board core crushing equipment 2 also includes a driving device 22, which provides power for the extrusion roller to realize the left-right, front-back or circular movement of the extrusion roller to crush the waste gypsum board 4 placed on the board placement table 1.

[0074] Embodiment 4:

[0075] The difference between the fourth embodiment and the second embodiment mainly lies in the plate placing table 1 and the plate core crushing device 2.

[0076] In the waste gypsum board paper removal system of the present embodiment, the board placement table 1 may not be provided.

[0077] The core crushing device 2 includes an extruder that can extrude the waste gypsum board 4. The extruder includes two extrusion rollers that are arranged correspondingly in the upper and lower parts. The two extrusion rollers are respectively arranged on two rolling shafts, and the two rolling shafts are parallel to each other. The circumferential surfaces of the two extrusion rollers are both working surfaces that apply crushing force to the core of the waste gypsum board 4. The spacing between the corresponding working surfaces of the upper and lower rollers is less than the thickness of the waste gypsum board 4. When the thickness of the waste gypsum board 4 is M, the spacing between the corresponding working surfaces of the upper and lower rollers is selected from a distance of M-6mm to M-2mm, preferably a distance of M-6mm to M-4mm.

[0078] Optionally, the automatic plate loading machine 6 is arranged upstream of the board core crushing equipment 2. The automatic plate loading machine 6 includes a control module, a lifting platform 61 and a pushing plate rod 62. The lifting platform 61 can be an automatic lifting platform. The control module controls the lifting platform 61 and the pushing plate rod 62 to coordinate with each other to load the board core crushing equipment 2, so that the waste gypsum board 4 passes through the gap between the corresponding working surfaces of the upper and lower extrusion rollers to achieve crushing of the waste gypsum board 4.

[0079] Alternatively, if Figure 1 As shown, in the waste gypsum board paper removal system, the board core crushing device 2 also includes a driving device 22, which provides power for the extruder to realize the rotation of the rolling axes of the upper and lower extrusion rollers.

[0080] In the description of the present invention, the term "connection" and the like should be understood in a broad sense, and may refer to fixed connection, detachable connection, or integral connection; may refer to direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0081] The above embodiments only express exemplary embodiments of the present invention, and the description thereof is relatively specific and detailed. The contents are only embodiments adopted to facilitate understanding of the present invention, and are not intended to limit the present invention. Any technician in the field to which the present invention belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be defined by the attached claims.

Claims

1. A waste gypsum board paper removal system, characterized in that: It comprises a core crushing device and a screening device, wherein the core crushing device is used to crush the core of the waste gypsum board without crushing the facing paper of the waste gypsum board; The screening device is used to screen the crushed board core and the uncrushed face paper; The waste gypsum board de-papering system further comprises: a board placement table, the board placement table is used to place the waste gypsum board; the board core crushing device comprises a working surface for applying a crushing force to the board core of the waste gypsum board placed on the board placement table, and the working surface is parallel to the table surface of the board placement table; The board core crushing equipment includes a hammering machine that can hammer the waste gypsum board placed on the board placement table, the hammering machine includes two hammering blocks, a flexible connector and a support column, the flexible connector bypasses the support column, and the two ends are respectively connected to the two hammering blocks; the lower end surface of the hammering block is the working surface; the hammering block can perform surface hammering on the waste gypsum board placed on the board placement table, and the size of the working surface is equal to the size of the board placement table during the surface hammering.

2. A waste gypsum board paper removal system as claimed in claim 1, characterized in that: The board core crushing equipment includes a hammering machine capable of hammering the waste gypsum board placed on the board placement table, and the hammering machine includes one or more hammering blocks that can move up and down, and the lower end surface of the hammering block is the working surface.

3. A waste gypsum board paper removal system according to any one of claims 1-2, characterized in that: It also includes an automatic plate loader, which is used to load materials for the core crushing equipment.

4. A waste gypsum board paper removal system according to any one of claims 1-2, characterized in that: It also includes a broken plate collector, which is arranged between the plate core crushing equipment and the screening device.

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