A chisel-type water washing device for separating face paper

Abstract

The present invention discloses a flushing and chiseling water-washing device for separating face paper, comprising a water-washing tank and a flushing and chiseling assembly arranged inside the water-washing tank. The crushed gypsum board fragments are immersed in the water of the water-washing tank, and the flushing and chiseling assembly performs a cyclic rolling operation on the immersed gypsum board fragments to accelerate the separation of the face paper and the gypsum core and form a mixed slurry; an anti-floating assembly is provided at the bottom of the water-washing tank, and the anti-floating assembly is used to always maintain the flushed and chiseled gypsum board fragments at the bottom of the water-washing tank to maintain the immersion posture and increase the dissolution rate of the gypsum core; the present invention always soaks the gypsum board fragments at the bottom of the water-washing tank, and during the immersion process, the gypsum board fragments are flushed and chiseled, and the flushed and chiseled gypsum board is always kept in the water, thereby achieving complete dissolution of the gypsum core.

Description

Technical Field

[0001] The invention relates to the technical field of gypsum board production, in particular to a chiseling type water washing device for separating face paper. Background Art

[0002] Gypsum board is made from building gypsum as the primary raw material, with appropriate additives and fiber as the core, and a specially made paperboard as the surface. Gypsum board is characterized by its light weight, sound and heat insulation, excellent processability, and simple construction methods.

[0003] Currently, in the traditional gypsum board industry, when processing waste gypsum boards generated in the production line, the waste gypsum boards are generally subjected to centralized crushing, paper scrap sorting and other steps, and then directly used in production for recycling. Specifically, when the existing waste gypsum boards are reused, the waste gypsum board materials after primary crushing are deeply processed and recycled into gypsum slurry. After multi-level storage, they are mixed with fresh gypsum slurry in proportion and fed to the gypsum production line in the workshop.

[0004] However, in the existing deep processing of gypsum slurry, most of the waste gypsum sheets are simply crushed in multiple stages, the surface paper scraps are screened, and the gypsum sheets are soaked in water to dissolve the gypsum core in the water to make gypsum slurry. However, the specific problems of this method are as follows:

[0005] (1) An additional screening operation of the face paper scraps is required to filter the face paper scraps and improve the purity of the gypsum slurry, resulting in more pre-production steps for preparing the gypsum slurry, affecting production efficiency and increasing the cost of recycling waste gypsum boards;

[0006] (2) Dissolving gypsum only by soaking results in a slow dissolution rate of gypsum, thereby affecting the efficiency of gypsum slurry preparation. Summary of the Invention

[0007] The purpose of the present invention is to provide a chisel-type water washing device for removing face paper, so as to solve the technical problems in the prior art of preparing gypsum slurry, such as the large number of pre-production steps affecting production efficiency, increasing the cost of recycling waste gypsum boards, and relying solely on immersion to dissolve the gypsum, resulting in a slow dissolution rate of the gypsum.

[0008] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0009] A chisel-type water-washing device for separating face paper comprises a water-washing tank and a chisel assembly disposed within the tank. Broken gypsum board fragments are immersed in the water of the water-washing tank, and the chisel assembly cyclically crushes the immersed gypsum board fragments to accelerate the separation of the face paper from the gypsum core and form a mixed slurry.

[0010] The bottom of the water washing tank is provided with an anti-floating component, which is used to keep the gypsum board fragments after being punched at the bottom of the water washing tank at all times to maintain the immersion posture and increase the dissolution rate of the gypsum core.

[0011] As a preferred solution of the present invention, the punching and chiseling assembly is located above the anti-floating assembly, and the elasticity of the anti-floating assembly can change as the punching and chiseling assembly moves up and down, so that the punching and chiseling assembly pushes the anti-floating assembly downward to squeeze the gypsum board fragments;

[0012] The horizontal surface area covered by the anti-floating component can be changed. A discharge port is formed between the anti-floating component and the side of the water washing tank. The gypsum board fragments fall to the bottom of the water washing tank through the discharge port, and the anti-floating component moves to close the discharge port to cover all the gypsum board fragments under the anti-floating component.

[0013] As a preferred solution of the present invention, the anti-floating component includes an elastic covering net arranged at the bottom of the water washing pool and on a horizontal plane, and a sliding rod arranged on one side of the elastic covering net. The side of the water washing pool is respectively provided with cutting grooves at both ends of the sliding rod. The sliding rod can move linearly along the cutting groove, and the end of the sliding rod is provided with an elastic rope connected to the groove wall of the cutting groove.

[0014] As a preferred solution of the present invention, the water washing tank is provided with a feed port at a corresponding position above the feed port, and the feed port is hinged with a movable panel that can be rotatable on the side parallel to the sliding rod;

[0015] A pulling assembly is provided between the feed port and the discharge port, and the pulling assembly simultaneously pulls the movable panel to rotate and the sliding rod to move to close the feed port and the discharge port, and the pulling assembly can simultaneously release and open the feed port and the discharge port to realize the feeding processing of the gypsum board fragments.

[0016] As a preferred solution of the present invention, the pulling assembly includes a first pull rope group connected to the bottom of the movable panel, and a second pull rope group connected to the sliding rod. A servo motor is provided on the outer wall of the water washing tank, and a rope threading groove is provided on the side wall of the water washing tank. The first pull rope group and the second pull rope group pass through the rope threading groove. The first pull rope group and the second pull rope group are wound around the rotating shaft or released from the rotating shaft as the servo motor rotates.

[0017] As a preferred solution of the present invention, the side edges of the elastic covering net are fixed to the pool wall at the bottom of the water washing pool by hooks, and the elastic covering net has redundancy when it is fully unfolded inside the water washing pool. The rebound force of the elastic covering net when it is pressed down is much smaller than the punching force of the punching assembly.

[0018] As a preferred embodiment of the present invention, the chisel assembly includes a rotating shaft movably mounted on two parallel sides of the water washing tank, and a chisel rod provided on the rotating shaft. A driving cylinder is provided at both ends of each rotating shaft above the water washing tank, and the driving cylinder drives the rotating shaft to rotate in a directional manner by upward and downward telescopic movement.

[0019] When the rotating shaft rotates around its central axis driven by the pushing cylinder, the punching rod is driven to perform circular motion to squeeze the gypsum board fragments, thereby accelerating the separation of the facing paper of the gypsum board fragments and the gypsum board blocks at the bottom of the washing tank.

[0020] As a preferred embodiment of the present invention, the punching rod includes a C-shaped plate fixedly mounted on the rotating shaft, and a squeezing roller movably mounted on the C-shaped plate, wherein the C-shaped plate rotates along the rotating shaft to drive the squeezing roller to squeeze the gypsum board fragments at the bottom of the washing tank;

[0021] The mounting directions of the profiled plates on all the rotating shafts are different, so that when all the rotating shafts rotate synchronously, only some of the squeezing rollers perform squeezing and punching operations on the gypsum board fragments at the same time.

[0022] As a preferred solution of the present invention, the water inlet and the liquid outlet of the water washing tank are respectively arranged on the mounting surface of the rotating shaft, and the bottom of the water washing tank is inclined from the water inlet to the liquid outlet.

[0023] As a preferred solution of the present invention, a sinking receiving groove is provided at the bottom of the water washing tank at the position of each rotating shaft, and the two sinking receiving grooves are connected by an arc-shaped smooth block. The gypsum board fragments are accumulated in the sinking receiving grooves, and the facing paper is separated from the gypsum core after being punched by the punching assembly.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention washes the crushed gypsum board with water to separate the facing paper, thereby generating a mixed slurry of the facing paper and gypsum slurry. In order to accelerate the separation of the facing paper, the gypsum board fragments are always immersed in the bottom of the washing tank, and during the immersion process, the gypsum board fragments are punched and chiseled, and the punched and chiseled gypsum board is always kept in the water body, thereby achieving complete dissolution of the gypsum core. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0027] Figure 1 A schematic diagram of the overall structure of a chisel-type water washing device provided in an embodiment of the present invention;

[0028] Figure 2 A schematic side cross-sectional view of a chisel-type water washing device provided in an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the top view of the anti-floating assembly provided in an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the installation structure of the first pull rope group provided in an embodiment of the present invention;

[0031] Figure 5 A schematic structural diagram of a punching and chiseling assembly provided in an embodiment of the present invention.

[0032] The numbers in the figure represent the following:

[0033] 4-water inlet; 5-liquid outlet; 6-sinking tank; 7-arc-shaped smooth stopper;

[0034] 21-water washing tank; 22-punching assembly; 23-anti-floating assembly; 24-feeding port; 25-feeding port; 26-movable panel; 27-pulling assembly;

[0035] 221 - rotating shaft; 222 - punching rod; 223 - pushing cylinder;

[0036] 2221-shaped plate; 2222-squeezing roller;

[0037] 231-elastic covering net; 232-sliding rod; 233-cutting groove; 234-elastic rope;

[0038] 271 - first pull rope group; 272 - second pull rope group; 273 - servo motor; 274 - rope threading groove. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] like Figure 1 and Figure 2 As shown, the present invention provides a chisel-type water washing device for separating the face paper. In order to recycle the waste gypsum board, the waste gypsum board needs to be crushed and the core and the face paper of the crushed gypsum board need to be separated. The existing separation operation is mostly carried out by screening or fan.

[0041] The present application washes the crushed gypsum board with water to remove the facing paper, so as to dissolve the gypsum core in the water body and generate a mixed slurry of the facing paper and gypsum slurry. In order to speed up the removal of the facing paper, the gypsum board fragments are punched and chiseled during the soaking process, and the punched and chiseled gypsum board is always kept in the water body, thereby achieving complete dissolution of the gypsum core.

[0042] The chisel-type water washing device specifically includes a water washing tank 21 and a chisel assembly 22 arranged inside the water washing tank 21. The crushed gypsum board fragments are immersed in the water body of the water washing tank 21, and the chisel assembly 22 performs a cyclic rolling operation on the immersed gypsum board fragments to accelerate the separation of the facing paper and the gypsum core and form a mixed slurry.

[0043] The bottom of the water washing tank 21 is provided with an anti-floating component 23, which is used to keep the gypsum board fragments after being punched at the bottom of the water washing tank 21 at all times to maintain the immersion posture and increase the dissolution rate of the gypsum core.

[0044] This embodiment uses a water washing method to soak the gypsum board fragments in water, so that the gypsum core dissolves to form gypsum slurry, and the facing paper automatically separates. However, when there is not much gypsum core remaining between the upper and lower facing papers, it will also float to the surface of the water along with the facing paper, which will result in residues on the facing paper and cannot be completely separated.

[0045] In order to solve the above problems, this embodiment provides an anti-floating component 23 at the bottom of the water washing tank 21. After the water body is injected, the anti-floating component 23 is always located inside the water body, thereby keeping the gypsum board fragments at the bottom of the water washing tank 21 at all times, thereby accelerating the dissolution rate of the gypsum core.

[0046] The punching and chiseling assembly 22 is located above the anti-floating assembly 23. The elasticity of the anti-floating assembly 23 can change as the punching and chiseling assembly 22 moves up and down. The punching and chiseling assembly 22 pushes the anti-floating assembly 23 downward to squeeze the gypsum board fragments.

[0047] The horizontal surface area covered by the anti-floating component 23 can be changed. A discharge port 24 is formed between the anti-floating component 23 and the side of the water washing tank 21. The gypsum board fragments fall to the bottom of the water washing tank 21 through the discharge port 24, and the anti-floating component 23 moves to close the discharge port 24 to cover all the gypsum board fragments under the anti-floating component 23.

[0048] When pouring gypsum board fragments into the water washing tank 21, the anti-floating component 23 is moved inside the water washing tank 21 to form a discharge port 24, and the gypsum board fragments move to the bottom of the water washing tank 21 through the discharge port 24. After completion, the anti-floating component 23 is moved toward the side wall of the water washing tank 21 and the discharge port 24 is closed to facilitate the soaking and punching of the gypsum board fragments.

[0049] like Figures 2 to 4 As shown, the anti-floating component 23 includes an elastic covering net 231 arranged at the bottom of the water washing pool 21 and on a horizontal plane, and a sliding rod 232 arranged on one side of the elastic covering net 231. The side of the water washing pool 21 is provided with cutting grooves 233 at both ends of the sliding rod 232. The sliding rod 232 can move linearly along the cutting groove 233, and the end of the sliding rod 232 is provided with an elastic rope 234 connected to the groove wall of the cutting groove 233.

[0050] The anti-floating component 23 mainly uses the elastic covering net 231 to prevent the movement of the face paper. The elastic covering net 231 has a certain deformation ability. When the punching and chiseling component 22 is working to squeeze the gypsum board fragments, the elastic covering net 231 ensures anti-floating and also adapts to the squeezing work of the punching and chiseling component 22 by deformation.

[0051] When the sliding rod 232 is pulled to completely cover the bottom of the washing tank 21, the elastic rope 234 is stretched and deformed. When the sliding rod 232 is released, the elastic rope 234 drives the elastic covering net 231 to move inward due to the rebound force, forming a discharge port 24.

[0052] The water washing tank 21 is provided with a feed port 25 at a position corresponding to the upper portion of the feed port 24 . A movable panel 26 capable of movable rotation is hingedly connected to the side of the feed port 25 parallel to the sliding rod 232 .

[0053] A pulling assembly 27 is provided between the feed port 25 and the discharge port 24. The pulling assembly 27 simultaneously pulls the movable panel 26 to rotate and the sliding rod 232 to move to close the feed port 25 and the discharge port 24. The pulling assembly 27 can simultaneously release and open the feed port 25 and the discharge port 24 to realize the feeding processing of gypsum board fragments.

[0054] This embodiment utilizes the pulling assembly 27 to drive the movement of the sliding rod 232. At this time, the feed needs to be closed. Therefore, the pulling assembly 27 is also utilized to close the feed port 25 of the washing tank 21, so that all the gypsum board fragments are immersed under the elastic covering net 231.

[0055] The pulling assembly 27 includes a first pull rope group 271 connected to the bottom of the movable panel 26, and a second pull rope group 272 connected to the sliding rod 232. A servo motor 273 is provided on the outer wall of the water washing tank 21, and a rope groove 274 is provided on the side wall of the water washing tank 21. The first pull rope group 271 and the second pull rope group 272 pass through the rope groove 274. The first pull rope group 271 and the second pull rope group 272 are wound around the rotating shaft or released from the rotating shaft as the servo motor 273 rotates.

[0056] The specific implementation of the pulling component 27 is:

[0057] The servo motor 273 rotates to unwind, the release length of the first pull rope group 271 and the second pull rope group 272 increases, the movable panel 26 rotates to open the feed port 25, and the sliding rod 232 moves toward the inside of the water washing tank 21 driven by the elastic rope 234, and a discharge port 24 is formed between the elastic covering net 231 and the water washing tank 21. The gypsum board chips fall to the bottom of the water washing tank 21 through the discharge port 24 and the feed port 25 in turn.

[0058] The servo motor 273 rotates and reels, the release length of the first pull rope group 271 and the second pull rope group 272 is reduced, the movable panel 26 rotates to close the feed port 25, and the sliding rod 232 moves toward the side wall of the water washing tank 21 driven by the elastic rope 234, and the discharge port 24 between the elastic covering net 231 and the water washing tank 21 is closed, so that all the gypsum board fragments are covered by the elastic covering net 231 at the bottom of the water washing tank 21.

[0059] Furthermore, in order to ensure that the elastic covering net 231 does not affect the punching force of the punching assembly 22, the side of the elastic covering net 231 is fixed to the pool wall at the bottom of the water washing pool 21 through hooks. The elastic covering net 231 has redundancy when it is fully unfolded inside the water washing pool 21. The rebound force of the elastic covering net 231 when it is pressed down is much smaller than the punching force of the punching assembly 22.

[0060] The chisel assembly 22 is specifically installed above the elastic covering net 231. As an embodiment of the chisel assembly 22, it specifically includes a rotating shaft 221 movably installed on two parallel sides of the water washing tank 21, and a chisel rod 222 arranged on the rotating shaft 221. Above the water washing tank 21, a pushing cylinder 223 is respectively provided at both ends of each rotating shaft 221. The pushing cylinder 223 drives the rotating shaft 221 to rotate in a directional manner through up and down telescopic movement.

[0061] When the rotating shaft 221 rotates around its central axis driven by the pushing cylinder 223, the punching rod 222 is driven to perform a circular motion to squeeze the gypsum board fragments, thereby accelerating the separation of the facing paper of the gypsum board fragments and the gypsum board blocks at the bottom of the washing tank 21.

[0062] like Figure 5 As shown, the punching rod 222 includes a C-shaped plate 2221 fixedly mounted on the rotating shaft 221, and a squeezing roller 2222 movably mounted on the C-shaped plate 2221. The C-shaped plate 2221 rotates along with the rotating shaft 221 to drive the squeezing roller 2222 to squeeze the gypsum board fragments at the bottom of the washing tank 21.

[0063] When the cylinder 223 is pushed to complete a telescopic movement, the profile plate 2221 and the rotating shaft 221 rotate around the central axis of the rotating shaft 221. When the squeezing roller 2222 rotates to the bottom of the washing tank 21, the gypsum board fragments can be squeezed, thereby accelerating the dissolution rate of the gypsum core.

[0064] As a preference of this embodiment, the mounting directions of the profiled plates 2221 on all the rotating shafts 221 are different, so that when all the rotating shafts 221 rotate synchronously, only some of the squeezing rollers 2222 perform squeezing and punching operations on the gypsum board fragments at the same time.

[0065] Assuming that all the C-shaped plates 2221 are installed at the same angle on the rotating shaft 221, then all the C-shaped plates 2221 will rotate synchronously to the bottom of the washing tank 21. At this time, the squeezing force on the elastic covering net 231 is very large, causing the elastic covering net 231 to be greatly deformed. The corresponding rebound force reaches the maximum, which affects the rolling operation of the squeezing roller 2222.

[0066] Therefore, based on the above, this embodiment specifically installs the profiled plates 2221 on all rotating shafts 221 in different directions, so that different squeezing rollers 2222 sequentially extrude the gypsum board fragments. At the same time, the elastic covering mesh 231 is subjected to reduced squeezing force and smaller deformation, thereby reducing the impact on the squeezing action of the squeezing rollers 2222 and accelerating the dissolution of the gypsum core.

[0067] The squeezing roller 2222 repeatedly punches and chisels the gypsum board fragments, thereby further crushing the gypsum board body, accelerating the dissolution efficiency, and also accelerating the separation of the face paper.

[0068] like Figure 1 and Figure 2As shown, in order to realize centralized flushing and chiseling, a sinking receiving groove 6 is provided at the bottom of the washing tank 21 at the position of each rotating shaft 221. The two sinking receiving grooves 6 are connected by an arc-shaped smooth block 7. The gypsum board fragments are accumulated in the sinking receiving groove 6, and the facing paper is separated from the gypsum core after being flushed and chiseled by the flushing and chiseling assembly 22.

[0069] The water inlet 4 and the liquid outlet 5 of the water washing tank 21 are respectively arranged on the mounting surface of the rotating shaft 221, and the bottom of the water washing tank 21 is inclined from the water inlet 4 to the liquid outlet 5, so as to facilitate the discharge of the mixed slurry formed by the gypsum slurry and the facing paper from the liquid outlet 5.

[0070] The crushed gypsum board is washed with water to remove the facing paper, generating a mixed slurry of facing paper and gypsum slurry. In order to speed up the removal of the facing paper, the gypsum board fragments are always immersed in the bottom of the washing tank. During the soaking process, the gypsum board fragments are punched and chiseled, and the punched and chiseled gypsum board is always kept in the water body, thereby achieving complete dissolution of the gypsum core.

[0071] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A chisel-type water washing device for separating face paper, characterized in that: It comprises a water washing tank (21) and a chisel assembly (22) arranged inside the water washing tank (21), wherein the crushed gypsum board fragments are immersed in the water body of the water washing tank (21), and the chisel assembly (22) performs a cyclic rolling operation on the immersed gypsum board fragments to accelerate the separation of the face paper and the gypsum core and form a mixed slurry; The bottom of the water washing tank (21) is provided with an anti-floating component (23), and the anti-floating component (23) is used to always keep the gypsum board fragments after being punched at the bottom of the water washing tank (21) to maintain the immersion posture and increase the dissolution rate of the gypsum core; The punching chisel component (22) is located above the anti-floating component (23), and the elasticity of the anti-floating component (23) can change as the punching chisel component (22) moves up and down, and the punching chisel component (22) pushes the anti-floating component (23) to move downward to squeeze the gypsum board fragments; The horizontal surface area covered by the anti-floating component (23) can be changed, and a discharge port (24) is formed between the anti-floating component (23) and the side of the water washing tank (21), and the gypsum board fragments fall to the bottom of the water washing tank (21) through the discharge port (24), and the anti-floating component (23) moves to close the discharge port (24) so ​​as to cover all the gypsum board fragments under the anti-floating component (23); The anti-floating component (23) comprises an elastic covering net (231) arranged at the bottom of the water washing tank (21) and on a horizontal surface, and a sliding rod (232) arranged on one side of the elastic covering net (231); The sides of the elastic covering net (231) are fixed to the pool wall at the bottom of the water washing pool (21) by hooks. The elastic covering net (231) has redundancy when it is fully unfolded inside the water washing pool (21). The rebound force of the elastic covering net (231) when it is pressed down is much smaller than the punching force of the punching assembly (22).

2. The chisel type water washing device for removing face paper according to claim 1, characterized in that: The side surface of the water washing tank (21) is provided with cutting grooves (233) at both ends of the sliding rod (232), the sliding rod (232) can move linearly along the cutting groove (233), and the end of the sliding rod (232) is provided with an elastic rope (234) connected to the groove wall of the cutting groove (233).

3. The chisel type water washing device for removing face paper according to claim 2, characterized in that: The water washing tank (21) is provided with a feed port (25) at a position corresponding to the upper portion of the feed port (24), and a movable panel (26) capable of movable rotation is hingedly connected to the side of the feed port (25) parallel to the sliding rod (232); A pulling assembly (27) is provided between the feed port (25) and the discharge port (24), and the pulling assembly (27) simultaneously pulls the movable panel (26) to rotate and the sliding rod (232) to move, so as to close the feed port (25) and the discharge port (24), and the pulling assembly (27) can simultaneously release and open the feed port (25) and the discharge port (24), so as to realize the feeding processing of the gypsum board fragments.

4. The chisel type water washing device for removing face paper according to claim 3, characterized in that: The pulling assembly (27) includes a first pull rope group (271) connected to the bottom of the movable panel (26), and a second pull rope group (272) connected to the sliding rod (232). A servo motor (273) is provided on the outer wall of the water washing tank (21), and a rope threading groove (274) is provided on the side wall of the water washing tank (21). The first pull rope group (271) and the second pull rope group (272) pass through the rope threading groove (274). The first pull rope group (271) and the second pull rope group (272) are wound around the rotating shaft or released from the rotating shaft as the servo motor (273) rotates.

5. The chisel type water washing device for separating face paper according to claim 1, characterized in that: The chisel assembly (22) includes a rotating shaft (221) movably mounted on two parallel sides of the water washing tank (21), and a chisel rod (222) provided on the rotating shaft (221). A driving cylinder (223) is provided at both ends of each rotating shaft (221) above the water washing tank (21). The driving cylinder (223) drives the rotating shaft (221) to rotate in a directional manner through an upward and downward telescopic movement. When the rotating shaft (221) rotates around its central axis driven by the pushing cylinder (223), the punching rod (222) is driven to perform a circular motion to squeeze the gypsum board fragments, thereby accelerating the separation of the protective paper of the gypsum board fragments from the gypsum board blocks at the bottom of the washing tank (21).

6. The chisel type water washing device for separating face paper according to claim 5, characterized in that: The punching rod (222) comprises a shaped plate (2221) fixedly mounted on the rotating shaft (221), and a squeezing roller (2222) movably sleeved on the shaped plate (2221); the shaped plate (2221) rotates along with the rotating shaft (221) to drive the squeezing roller (2222) to squeeze the gypsum board fragments at the bottom of the washing tank (21); The mounting directions of the shaped plates (2221) on all the rotating shafts (221) are different, so that when all the rotating shafts (221) rotate synchronously, only a number of the squeezing rollers (2222) perform squeezing and punching operations on the gypsum board fragments at the same time.

7. The chisel type water washing device for removing face paper according to claim 6, characterized in that: The water inlet (4) of the water washing tank (21) and the liquid outlet (5) of the water washing tank (21) are respectively arranged on the mounting surface of the rotating shaft (221), and the bottom of the water washing tank (21) is inclined from the water inlet (4) toward the liquid outlet (5).

8. The chisel type water washing device for removing face paper according to claim 6, characterized in that: The bottom of the water washing tank (21) is provided with a sinking receiving groove (6) at the position of each rotating shaft (221), and the two sinking receiving grooves (6) are connected by an arc-shaped smooth stopper (7). The gypsum board fragments are accumulated in the sinking receiving grooves (6), and the face paper is separated from the gypsum core after being punched and chiseled by the punching and chiseling assembly (22).

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