Crushing device for coarse whiting fine powder processing

Abstract

The invention relates to the field of calcium carbonate crushing, in particular to a crushing device for heavy calcium carbonate fine powder processing, which comprises a support frame, a crushing hollow tank fixedly mounted on the top surface of the support frame, a mixing flow guide box fixedly mounted on the top surface of the crushing hollow tank, and a screening box arranged on the edge position of one side of the support frame, first motors are fixedly mounted on the surfaces of the two sides of the crushing hollow tank, and the output ends of the first motors extend into the crushing hollow tank and are fixedly provided with crushing barrels correspondingly. An arc-shaped grinding strip on the outer side surface of the secondary crushing cylinder is used for extruding and grinding heavy calcium carbonate accumulated in the crushing hollow tank, then the heavy calcium carbonate is heated in the secondary crushing cylinder through a heating roller, and an accumulated high-temperature heat source permeates out through a heat conduction layer; furthermore, the fine heavy calcium carbonate in the crushing hollow tank is heated, and some moisture adhered to the interior of the heavy calcium carbonate is dried at high temperature.

Description

Technical Field

[0001] The invention belongs to the technical field of calcium carbonate crushing, in particular to a crushing device used for processing heavy calcium carbonate fine powder. Background Art

[0002] Heavy calcium carbonate, referred to as heavy calcium carbonate, is made by grinding natural carbonate minerals such as calcite, marble, and limestone. In the processing of heavy calcium carbonate powder, a calcium carbonate Raymond mill is needed. This calcium carbonate Raymond mill is a highly efficient crushing and grinding equipment that integrates crushing, drying, grinding, grading, and transportation. It is widely used in crushing and grinding in calcium carbonate, cement, electric power, metallurgy, chemical industry, non-metallic minerals and other industries.

[0003] A patent with publication number CN 115672526 A discloses a crushing device for processing heavy calcium carbonate powder. The present invention comprises a bottom plate, the upper surface of the bottom plate is fixedly connected to a body, one end of the body is fixedly connected to a feed hopper, one side of the body is installed with a transmission shaft, the end of the body away from the feed hopper is installed with a discharge port, the end of the body close to the discharge port is installed with a conveyor belt, and the upper side of the discharge hopper is provided with a protective structure, the protective structure comprises two slide rails, the two slide rails are fixedly connected to the feed hopper, the side of the slides away from each other is fixedly connected to a connecting plate, and the inner wall of the connecting plate is threadedly connected with a screw. The problem that the heavy calcium carbonate powder is easily thrown out of the feed hopper due to excessive stirring force of the crusher during the processing of the heavy calcium carbonate powder is solved.

[0004] In the current prior art, ordinary crushing devices can only crush calcium carbonate once, resulting in uneven particles of calcium carbonate after crushing, and particles of unqualified sizes need to be manually screened and crushed again, which greatly affects the efficiency of calcium carbonate crushing. Therefore, a crushing device for heavy calcium carbonate fine powder processing is proposed.

[0005] To this end, the present invention provides a crushing device for processing heavy calcium carbonate fine powder. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a crushing device for heavy calcium carbonate powder processing described in the present invention comprises a support frame and a crushing hollow tank fixedly installed on the top surface of the support frame, a mixing guide box fixedly installed on the top surface of the crushing hollow tank, and a screening box arranged on the edge position of one side of the support frame, a motor 1 is fixedly installed on the two side surfaces of the crushing hollow tank, the output end of the motor 1 extends to the inside of the crushing hollow tank and is respectively fixedly installed with a crushing cylinder, a secondary crushing cylinder and an auxiliary extrusion cylinder, and the position of the secondary crushing cylinder is arranged at the bottom edge position of the crushing cylinder, a docking groove is opened on the outer surface of the crushing cylinder and the auxiliary extrusion cylinder, a docking strip is fixedly installed on the outer surface of the crushing cylinder and the auxiliary extrusion cylinder and at the edge position of one side of the docking groove, and the outer surface of the docking strip is fixedly connected with a crushing and rolling strip that movably fits on the inner wall surface of the docking groove.

[0008] Preferably, an arc-shaped crushing strip that movably fits on the inner wall surface of the crushing hollow tank is fixedly connected to the outer surface of the secondary crushing cylinder.

[0009] Preferably, a heat-conducting layer is provided on the inner wall surface of the secondary pulverizing cylinder, a cavity is provided on the inner wall surface of the heat-conducting layer, and a heating roller is fixedly mounted on the inner wall surface of the heat-conducting layer.

[0010] Preferably, a feed pipe arranged on the top surface of the crushed hollow tank is fixedly installed on the bottom surface of the mixing guide box and at the edge positions on both sides.

[0011] Preferably, a limiting strip is fixedly connected to the inner wall surface of the bottom of the mixing guide box and located at the edge of the inlet of the discharge pipe.

[0012] Preferably, a second motor is fixedly mounted on the inner wall of the bottom of the mixing guide box in the middle position, a pull-out rod is movably sleeved on the outer surface of the output end of the second motor, and a closing plate arranged on the inner wall of the limit strip is movably sleeved on the other end of the pull-out rod.

[0013] Preferably, the inner wall surfaces on both sides of the screening box are symmetrically fixedly connected with overlapping support bars, the top surfaces of the overlapping support bars are respectively provided with guide plates and screening plates, and the position of the screening plates is set at the top edge position of the guide plates, and the two side surfaces of the screening plates are fixedly connected with limit rods movably sleeved on the outer surface of the screening box. Preferably, an isolation plate arranged on one side surface of the screen plate is fixedly connected to the top inner wall surface of the screening box, a motor three is fixedly installed on the outer surface of the screening box, and a vibrating roller movably overlapped on the bottom edge of the screen plate is fixedly connected to the output end of the motor three.

[0014] Preferably, a return hose is fixedly installed on one side surface of the crushed hollow tank and extends through the screening box to the side surface of the screening plate, and a material guide pipe is fixedly installed on one side surface of the crushed hollow tank and extends through the screening box to the top edge of the screening plate.

[0015] Preferably, a circulation blower is arranged on one side surface of the support frame, and an air guide pipe extending to the inner wall surface of the crushed hollow tank is fixedly connected to the output end of the circulation blower.

[0016] The beneficial effects of the present invention are as follows: 1. A crushing device for processing heavy calcium carbonate fine powder described in the present invention guides the heavy calcium carbonate into the interior of the mixing guide box, and at the same time, the pull-out rod is pulled while the motor 2 is rotated, so that the closing plate on one end of the pull-out rod is horizontally moved on the inner wall surface of the limit strip, and the closing plate is moved away from the top surface of the discharge pipe, so that the heavy calcium carbonate in the mixing guide box enters the interior of the crushing hollow tank from the interior of the discharge pipe, and then the motor 2 is rotated to close the closing plate to the top surface of the discharge pipe again, so as to prevent the heavy calcium carbonate from being continuously infused into the interior of the crushing hollow tank, thereby achieving the effect of controlling the amount of heavy calcium carbonate falling each time according to the back and forth movement of the closing plate, and the closing plate moves back and forth inside the mixing guide box, and can also push and stir the heavy calcium carbonate accumulated inside the mixing guide box, so that the heavy calcium carbonate can effectively enter the interior of the discharge pipe, and also greatly avoid the accumulation of heavy calcium carbonate inside the mixing guide box; 2. The crushing device for processing heavy calcium carbonate powder described in the present invention rotates the secondary crushing cylinder through a pair of motors, so that the arc-shaped rolling strips on the outer surface of the secondary crushing cylinder extrude and grind the heavy calcium carbonate accumulated inside the crushed hollow tank, and then heat the inside of the secondary crushing cylinder through a heating roller. The accumulated high-temperature heat source penetrates through the heat-conducting layer, and then heats the fine heavy calcium carbonate inside the crushed hollow tank, and performs high-temperature drying on some water vapor adhering to the inside of the heavy calcium carbonate; 3. The crushing device for processing heavy calcium carbonate fine powder described in the present invention cooperates with a motor to rotate a crushing cylinder and an auxiliary extrusion cylinder in the same direction, so that the heavy calcium carbonate entering the crushing hollow tank will be accumulated on the top surface of the crushing cylinder and the auxiliary extrusion cylinder, and the accumulated heavy calcium carbonate is accumulated by the docking groove. At this time, the docking strip is inserted into the interior of the docking groove to crush some of the heavy calcium carbonate accumulated in the docking groove, and the large pieces of heavy calcium carbonate are crushed into small pieces of heavy calcium carbonate. Then, the crushing and crushing strips on the outer surface of the docking strip are used to crush the heavy calcium carbonate crushed into small pieces in the docking groove for the second time, so that the small pieces of heavy calcium carbonate become smaller, thereby achieving the effect of multiple crushing of large pieces of heavy calcium carbonate by the docking strip and the crushing and crushing strip; 4. The crushing device for processing heavy calcium carbonate powder described in the present invention cooperates with a circulating blower to blow air into the air guide pipe, and uses the impact of the airflow to blow up the heavy calcium carbonate accumulated on the inner bottom of the crushed hollow tank. Some lighter heavy calcium carbonate particles will enter the interior of the guide pipe and be infused into the interior of the screening box, while some larger particles of heavy calcium carbonate will gradually spread from the top layer to the bottom layer due to their own gravity, thereby achieving the effect of using the blowing of the airflow to gradually separate large particles of heavy calcium carbonate and small particles of heavy calcium carbonate, and then the large particles of heavy calcium carbonate remain in place due to their own weight and cooperate with the secondary crushing cylinder for secondary crushing treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 is a stereogram of the present invention; Figure 2 It is a cutaway stereogram of a broken hollow can in the present invention; Figure 3 It is a cutaway stereogram of the screening box in the present invention; Figure 4 It is a three-dimensional diagram of the crushing barrel in the present invention; Figure 5 It is a three-dimensional diagram of the crushing and rolling strip in the present invention; Figure 6 It is a partial cutaway stereoscopic view of the mixing guide box in the present invention; Figure 7 It is a cross-sectional perspective view of the secondary grinding cylinder in the present invention.

[0019] In the figure: 11, support frame; 111, crushing hollow can; 112, motor one; 113, crushing cylinder; a1, auxiliary extrusion cylinder; a2, docking groove; a3, docking strip; a4, crushing and rolling strip; 114, secondary crushing cylinder; c1, arc rolling strip; c2, heat conductive layer; c3, heating roller; 115, air guide pipe; 116, circulating blower; 117, material guide pipe; 118, return hose; 12, mixing guide box; 121, feeding pipe; 122, limit strip; 123, motor two; 124, pulling rod; 125, closing plate; 13, screening box; 131, overlapping support strip; 132, guide plate; 133, limit rod; 134, screening plate; 135, isolation plate; 136, motor three; 137, vibrating roller. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figures 1 to 7 As shown, a crushing device for processing heavy calcium carbonate powder according to an embodiment of the present invention comprises a support frame 11 and a crushing hollow tank 111 fixedly mounted on the top surface of the support frame 11, a mixing guide box 12 fixedly mounted on the top surface of the crushing hollow tank 111, a screening box 13 arranged on the edge position of one side of the support frame 11, a motor 112 fixedly mounted on the two side surfaces of the crushing hollow tank 111, an output end of the motor 112 extends to the inside of the crushing hollow tank 111 and is respectively fixedly mounted with a crushing cylinder 113, a secondary crushing cylinder 114 and an auxiliary extrusion cylinder a1, and the position of the secondary crushing cylinder 114 is arranged at the bottom edge position of the crushing cylinder 113, a docking groove a2 is provided on the outer surface of the crushing cylinder 113 and the auxiliary extrusion cylinder a1, a docking strip a3 is fixedly mounted on the outer surface of the crushing cylinder 113 and the auxiliary extrusion cylinder a1 and at the edge position of one side of the docking groove a2, and a crushing rolling strip a4 movably fitted on the inner wall surface of the docking groove a2 is fixedly connected to the outer surface of the docking strip a3.

[0022] The motor 112 is used to rotate the crushing cylinder 113 and the auxiliary extrusion cylinder a1 in the same direction, so that the heavy calcium carbonate entering the crushing hollow tank 111 is accumulated on the top surface of the crushing cylinder 113 and the auxiliary extrusion cylinder a1. At this time, the accumulated heavy calcium carbonate is accumulated by the docking groove a2. At this time, the docking bar a3 is inserted into the docking groove a2 to crush some of the heavy calcium carbonate accumulated in the docking groove a2, and the large pieces of heavy calcium carbonate are crushed into small pieces of heavy calcium carbonate, and then the outer surface of the docking bar a3 is inserted into the docking groove a2 to crush the heavy calcium carbonate. The crushing and rolling strip a4 on the connecting groove a2 crushes the heavy calcium carbonate into small pieces for a second time, so that the small pieces of heavy calcium carbonate become smaller, and the connecting strip a3 and the crushing and rolling strip a4 are used to crush the large pieces of heavy calcium carbonate for multiple times, thereby avoiding the situation that ordinary crushing devices can only crush the heavy calcium carbonate once, resulting in uneven particles of calcium carbonate after crushing, and particles of unqualified size need to be manually screened and crushed again, which greatly affects the efficiency of calcium carbonate crushing.

[0023] like Figure 1 to Figure 2 and Figure 6 As shown, a feed pipe 121 arranged on the top surface of the crushing hollow tank 111 is fixedly installed on the bottom surface of the mixing guide box 12 and located on the edge positions on both sides, a limiting strip 122 is fixedly connected to the bottom inner wall surface of the mixing guide box 12 and located on the edge position of the entrance of the feed pipe 121, a motor 123 is fixedly installed on the bottom inner wall surface of the mixing guide box 12 and located in the middle position, a pull rod 124 is movably sleeved on the outer surface of the output end of the motor 123, and a closing plate 125 arranged on the inner wall surface of the limit strip 122 is movably sleeved on the other end of the pull rod 124.

[0024] The heavy calcium carbonate is directed into the interior of the mixing guide box 12, and the pull rod 124 is pulled while the motor 123 is rotated, so that the closing plate 125 on one end of the pull rod 124 is horizontally moved on the inner wall surface of the limit bar 122, and the closing plate 125 is moved away from the top surface of the discharge pipe 121, so that the heavy calcium carbonate inside the mixing guide box 12 enters the interior of the crushing hollow tank 111 from the inside of the discharge pipe 121, and then the motor 123 is rotated to close the closing plate 125 to the top surface of the discharge pipe 121 again, so as to prevent the heavy calcium carbonate from being continuously infused into the crushing hollow tank 111. 11, achieving the effect of controlling the amount of heavy calcium carbonate falling each time according to the back and forth movement of the closing plate 125, avoiding the traditional input device being unable to control the lowered capacity, which can easily cause the heavy calcium carbonate to cause blockage on the surface of the crushing roller and increase the pressure load of the crushing cylinder. The closing plate 125 moves back and forth inside the mixing guide box 12, and can also push and stir the heavy calcium carbonate accumulated inside the mixing guide box 12, so that the heavy calcium carbonate can effectively enter the inside of the discharge pipe 121, and it also greatly avoids the accumulation of heavy calcium carbonate inside the mixing guide box 12.

[0025] like Figure 1 - Figure 2 , Figure 4 and Figure 7 As shown, an arc-shaped rolling strip c1 that movably fits on the inner wall of the crushed hollow can 111 is fixedly connected to the outer surface of the secondary crushing cylinder 114, a heat-conducting layer c2 is arranged on the inner wall of the secondary crushing cylinder 114, a cavity is arranged on the inner wall of the heat-conducting layer c2, and a heating roller c3 is fixedly installed on the inner wall of the heat-conducting layer c2.

[0026] The crushed heavy calcium carbonate will fall deep into the inner side of the crushed hollow can 111, and the secondary crushing cylinder 114 will be rotated by the motor 112 at this time, so that the arc-shaped crushing strip c1 on the outer surface of the secondary crushing cylinder 114 extrude and grind the heavy calcium carbonate accumulated inside the crushed hollow can 111, and then heat the inside of the secondary crushing cylinder 114 through the heating roller c3, and the accumulated high-temperature heat source penetrates through the heat-conducting layer c2, and then heats the fine heavy calcium carbonate inside the crushed hollow can 111, and performs high-temperature drying on some water vapor adhering to the inside of the heavy calcium carbonate; it avoids the adsorption of water vapor on the surface of the heavy calcium carbonate before the heavy calcium carbonate is crushed, and these water vapors will adsorb fine heavy calcium carbonate powder to form agglomerates, and these agglomerates will adhere to the peripheral positions of the crushing and crushing strip a4, resulting in low subsequent crushing efficiency.

[0027] like Figure 1 to Figure 2As shown, a return hose 118 is fixedly installed on one side surface of the crushed hollow tank 111, and extends through the screening box 13 to the side surface of the screening plate 134; a material guide pipe 117 is fixedly installed on one side surface of the crushed hollow tank 111, and extends through the screening box 13 to the top edge of the screening plate 134; a circulating blower 116 is arranged on one side surface of the support frame 11, and an air guide pipe 115 extending to the inner wall of the crushed hollow tank 111 is fixedly connected to the output end of the circulating blower 116.

[0028] At this time, the circulating blower 116 is cooperated to blow air into the air guide pipe 115, and the heavy calcium carbonate accumulated on the inner bottom of the broken hollow can 111 is blown up by the impact of the airflow. Some lighter heavy calcium carbonate particles will enter the interior of the guide pipe 117 and be infused into the interior of the screening box 13, while some larger particles of heavy calcium carbonate will gradually spread from the top layer to the bottom layer due to their own gravity, thereby achieving the effect of utilizing the blowing of the airflow to gradually separate large particles of heavy calcium carbonate and small particles of heavy calcium carbonate, and then the large particles of heavy calcium carbonate remain in place due to their own weight and cooperate with the secondary crushing cylinder 114 for secondary crushing treatment; avoiding the situation in which large particles and small particles are piled up together during crushing in the traditional particle crushing device, and cannot be effectively separated, resulting in low crushing efficiency.

[0029] like Figures 1 to 3 As shown, overlapping support bars 131 are symmetrically fixedly connected to the inner wall surfaces on both sides of the screening box 13, and guide plates 132 and screening plates 134 are respectively arranged on the top surfaces of the overlapping support bars 131, and the position of the screening plate 134 is set at the top edge position of the guide plate 132, and the limiting rods 133 movably sleeved on the outer surface of the screening box 13 are fixedly connected to the two side surfaces of the screening plate 134, and an isolation plate 135 arranged on one side surface of the screening plate 134 is fixedly connected to the top inner wall surface of the screening box 13, and a motor three 136 is fixedly installed on the outer surface of the screening box 13, and a vibration roller 137 movably overlapped on the bottom edge position of the screening plate 134 is fixedly connected to the output end of the motor three 136.

[0030] The heavy calcium carbonate particles entering the screening box 13 will be preferentially accumulated on the top surface of the screening plate 134. At this time, the motor 3 136 is cooperated to rotate the vibration roller 137, so that the vibration roller 137 repeatedly vibrates up and down at one end with the limit rod 133 as the support point. The vibration of the screening plate 134 is used to screen the fine powder inside the particles onto the top surface of the guide plate 132. Some unqualified particles will be directly accumulated at the bottom position through the inclined surface of the screening plate 134. At this time, the accumulated particles are refluxed through the reflux hose 118 to guide them to the inside of the crushing hollow tank 111 for a secondary grinding effect.

[0031] Working principle: The heavy calcium carbonate is directed into the interior of the mixing guide box 12, and the pull rod 124 is pulled while the motor 123 is rotated, and the closing plate 125 on one end of the pull rod 124 is horizontally moved on the inner wall surface of the limit bar 122, and the closing plate 125 is moved away from the top surface of the discharge pipe 121, so that the heavy calcium carbonate in the mixing guide box 12 enters the interior of the crushing hollow tank 111 from the interior of the discharge pipe 121, and then the motor 123 is rotated to close the closing plate 125 again. To the top surface of the feed pipe 121, the heavy calcium carbonate is prevented from being continuously infused into the broken hollow tank 111, and the amount of heavy calcium carbonate falling each time is controlled according to the back and forth movement of the closing plate 125. The closing plate 125 moves back and forth inside the mixing guide box 12, and can also push and stir the heavy calcium carbonate accumulated inside the mixing guide box 12, so that the heavy calcium carbonate can effectively enter the feed pipe 121, and it also greatly avoids the accumulation of heavy calcium carbonate inside the mixing guide box 12. The motor 112 is coordinated to rotate the crushing cylinder 113 and the auxiliary extrusion cylinder a1 in the same direction, so that the heavy calcium carbonate entering the crushing hollow tank 111 will be accumulated on the top surfaces of the crushing cylinder 113 and the auxiliary extrusion cylinder a1, and the accumulated heavy calcium carbonate is accumulated by the docking groove a2. At this time, the docking strip a3 is inserted into the docking groove a2 to crush some of the heavy calcium carbonate accumulated in the docking groove a2, and the large pieces of heavy calcium carbonate are crushed into small pieces of heavy calcium carbonate. The crushing and crushing strip a4 on the outer surface of the docking strip a3 is used to crush the heavy calcium carbonate broken into small pieces in the docking groove a2 for a second time, so that the small pieces of heavy calcium carbonate become smaller, thereby achieving The effect of multiple crushing of large pieces of heavy calcium carbonate by using the docking strips a3 and the crushing and rolling strips a4; the crushed heavy calcium carbonate will fall deep inside the crushed hollow can 111, and at this time, the secondary crushing cylinder 114 is rotated by the motor 112, so that the arc-shaped rolling strips c1 on the outer surface of the secondary crushing cylinder 114 squeeze and grind the heavy calcium carbonate accumulated inside the crushed hollow can 111, and then the heating roller c3 is used to heat the inside of the secondary crushing cylinder 114, and the accumulated high-temperature heat source penetrates through the heat-conducting layer c2, thereby heating the fine heavy calcium carbonate inside the crushed hollow can 111, and performing high-temperature drying on some water vapor adhering to the heavy calcium carbonate; At this time, the circulating blower 116 blows air into the air guide pipe 115, and the heavy calcium carbonate accumulated at the bottom of the broken hollow tank 111 is blown up by the impact of the airflow. Some lighter heavy calcium carbonate particles will enter the interior of the guide pipe 117 and be infused into the interior of the screening box 13, while some larger particles of heavy calcium carbonate will gradually spread from the top layer to the bottom layer due to their own gravity, so that the large particles of heavy calcium carbonate and the small particles of heavy calcium carbonate are gradually separated by the blowing of the airflow, and then the large particles of heavy calcium carbonate remain in place due to their own weight and cooperate with the secondary crushing cylinder 114 for secondary crushing. Effect: The heavy calcium carbonate particles entering the screening box 13 will first accumulate on the top surface of the screening plate 134. At this time, the motor three 136 is used to rotate the vibration roller 137, so that the vibration roller 137 repeatedly vibrates up and down at one end with the limit rod 133 as the support point. The vibration of the screening plate 134 is used to screen the fine powder inside the particles onto the top surface of the guide plate 132. Some unqualified particles will pass through the inclined surface of the screening plate 134 and accumulate directly at the bottom position. At this time, the accumulated particles are refluxed through the reflux hose 118 to guide them to the inside of the crushing hollow tank 111 for secondary grinding.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A crushing device for processing heavy calcium carbonate fine powder, comprising a support frame (11) and a crushing hollow tank (111) fixedly mounted on the top surface of the support frame (11), a mixing guide box (12) fixedly mounted on the top surface of the crushing hollow tank (111), and a screening box (13) arranged at an edge position on one side of the support frame (11), characterized in that: A motor 1 (112) is fixedly mounted on the two side surfaces of the crushing hollow tank (111), the output end of the motor 1 (112) extends into the crushing hollow tank (111) and is respectively fixedly mounted with a crushing cylinder (113), a secondary crushing cylinder (114) and an auxiliary extrusion cylinder (a1), and the secondary crushing cylinder (114) is arranged at the bottom edge of the crushing cylinder (113), a docking groove (a2) is provided on the outer surfaces of the crushing cylinder (113) and the auxiliary extrusion cylinder (a1), a docking strip (a3) ​​is fixedly mounted on the outer surfaces of the crushing cylinder (113) and the auxiliary extrusion cylinder (a1) and at a side edge of the docking groove (a2), and a crushing and rolling strip (a4) movably fitted on the inner wall of the docking groove (a2) is fixedly connected to the outer surface of the docking strip (a3).

2. A crushing device for processing heavy calcium carbonate powder according to claim 1, characterized in that: An arc-shaped rolling strip (c1) is fixedly connected to the outer surface of the secondary crushing cylinder (114) and movably fits on the inner wall surface of the crushing hollow tank (111).

3. A crushing device for processing heavy calcium carbonate powder according to claim 2, characterized in that: A heat-conducting layer (c2) is provided on the inner wall surface of the secondary crushing cylinder (114), a cavity is provided on the inner wall surface of the heat-conducting layer (c2), and a heating roller (c3) is fixedly mounted on the inner wall surface of the heat-conducting layer (c2).

4. A crushing device for processing heavy calcium carbonate powder according to claim 3, characterized in that: A feed pipe (121) arranged on the top surface of the crushing hollow tank (111) is fixedly mounted on the bottom surface of the mixing guide box (12) and at the edge positions on both sides.

5. A crushing device for heavy calcium carbonate powder processing according to claim 4, characterized in that: A limiting strip (122) is fixedly connected to the inner wall surface of the bottom of the mixing guide box (12) and at an edge position at the entrance of the feed discharge pipe (121).

6. A crushing device for heavy calcium carbonate powder processing according to claim 5, characterized in that: A second motor (123) is fixedly mounted on the inner wall surface of the bottom of the mixing guide box (12) and located in the middle position; a pull-out rod (124) is movably sleeved on the outer surface of the output end of the second motor (123); and a closing plate (125) arranged on the inner wall surface of the limit strip (122) is movably sleeved on the other end of the pull-out rod (124).

7. A crushing device for processing heavy calcium carbonate powder according to claim 6, characterized in that: The inner wall surfaces on both sides of the screening box (13) are symmetrically fixedly connected with overlapping support bars (131), the top surfaces of the overlapping support bars (131) are respectively provided with guide plates (132) and screening plates (134), and the screening plates (134) are arranged at the top edge of the guide plates (132), and the limiting rods (133) movably sleeved on the outer surface of the screening box (13) are fixedly connected with the surfaces on both sides of the screening plate (134).

8. A crushing device for processing heavy calcium carbonate powder according to claim 7, characterized in that: An isolation plate (135) arranged on one side surface of the screening plate (134) is fixedly connected to the top inner wall surface of the screening box (13), and a motor three (136) is fixedly installed on the outer surface of the screening box (13), and a vibrating roller (137) movably overlapped on the bottom edge of the screening plate (134) is fixedly connected to the output end of the motor three (136).

9. A crushing device for processing heavy calcium carbonate powder according to claim 8, characterized in that: A return hose (118) is fixedly mounted on one side surface of the crushing hollow tank (111) and extends through the screening box (13) to the side surface of the screening plate (134). A material guide pipe (117) is fixedly mounted on one side surface of the crushing hollow tank (111) and extends through the screening box (13) to the top edge of the screening plate (134).

10. A crushing device for heavy calcium carbonate powder processing according to claim 9, characterized in that: A circulating blower (116) is provided on one side surface of the support frame (11), and an air guide pipe (115) extending to the inner wall surface of the crushed hollow tank (111) is fixedly connected to the output end of the circulating blower (116).

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