Composite sand making machine and its sand making monitoring system

Abstract

The invention discloses a composite sand making machine and a sand making monitoring system thereof, and relates to the technical field of sand making devices. The composite sand making machine comprises a middle machine body, on which a feed hopper is mounted, and below which a lower machine body is mounted; a wheel which is coaxial with the feed hopper and forms a crushing chamber with the middle machine body; an impact plate which is circumferentially distributed on the inner axis of the middle machine body and receives and reflects materials; the wheel comprises an upper wheel frame and a lower wheel frame, and the upper wheel frame and the lower wheel frame both have chambers, which are an upper wheel chamber and a lower wheel chamber respectively. Materials are thrown out through the lower wheel chamber and impact the upper layer of the impact plate surface to be crushed and reflected into the lower wheel chamber. The invention adopts a double-layer wheel design, which comprises an upper wheel frame and a lower wheel frame, and the upper wheel frame and the lower wheel frame both have their own chambers to realize the multi-level crushing function of materials. The design of the double-layer wheel enables materials to be processed at different heights, increases the crushing path of materials, and thus improves the crushing efficiency and the uniformity of materials.

Description

Technical Field

[0001] The invention relates to the technical field of sand making devices, in particular to a composite sand making machine and a sand making monitoring system thereof. Background Art

[0002] Vertical shaft sand making machine is a special equipment used to produce sand or stone for construction. It accelerates the material through the high-speed rotating impeller (also called impeller) and then hits the impact device or other materials in the crushing chamber to achieve the purpose of crushing and shaping. The impact plate, also called the side guard plate or liner plate, is an important part of the vertical shaft sand making machine used to protect the inner wall of the crushing chamber. Because it is in direct contact with high-speed moving materials, it will experience varying degrees of wear during use.

[0003] A Chinese patent with publication number CN113457804A discloses a vertical shaft sand making machine, which utilizes the rotation of the rotor to drive the transmission shaft to rotate and then drive the eccentric block to rotate and generate vibration force on the screen plate. The stones separated by the hopper fall onto the screen plate and are evenly vibrated and sorted to fall from the screen holes to different positions. It also works together with a cone ring so that large and heavy stones can be thrown out at the same height on the rotor to collide with the impact ring, and the accumulation of stones is avoided, which is more conducive to improving the crushing effect and thus improving efficiency.

[0004] In actual operation, sand and gravel enter the feed hopper in batches, and are then thrown into the crushing chamber by the rotation of the rotor and hit the impact plate. The impact plate directly contacts the high-speed moving material. The weights of large and small stones in the batches of sand and gravel are different, which causes the large and small sand and gravel passively thrown out by the rotation of the rotor to fall to different positions on the impact plate, resulting in uneven wear of the impact plate. Uneven wear will cause the flow path of the material in the crushing chamber to change, making the material unable to be evenly dispersed and fully crushed, which in turn leads to different particle sizes of the output sand and gravel; secondly, the material in the current sand making machine is not crushed finely enough, and it is often necessary to put the larger particles in the crushed material back into the sand making machine for re-crushing, which has low working efficiency.

[0005] To this end, the present invention proposes a composite sand making machine and a sand making monitoring system thereof to solve the above problems. Summary of the invention

[0006] In view of the above problems in the prior art, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a composite sand making machine, comprising:

[0008] A middle body, on which a feed hopper with a feed inlet is mounted, and below which a lower body with a discharge port is mounted;

[0009] The impeller is coaxial with the feed hopper and forms a crushing chamber with the middle machine body;

[0010] An impact plate, which is circumferentially distributed on the inner axis of the middle body, receives and reflects the material;

[0011] Among them, the impeller includes an upper impeller frame and a lower impeller frame, and the upper impeller frame and the lower impeller frame each have a chamber, namely an upper impeller chamber and a lower impeller chamber. The material is thrown out through the lower impeller chamber and impacts the upper layer of the impact plate surface to be broken and reflected into the lower impeller chamber. The material enters the lower impeller chamber at a higher speed to be impacted and broken again, and is reflected to the lower layer of the impact plate surface to be shaped.

[0012] As a preferred solution of the composite sand making machine described in the present invention, a first cylinder is fixed between the upper wheel frame and the lower wheel frame, and the upper wheel frame is driven to move vertically upward on the surface of the lower wheel frame by the first cylinder. A main shaft is provided at the bottom end of the lower wheel frame, and a second cylinder is fixed between the main shaft and the lower wheel frame, and the main shaft is fixedly connected to the lower wheel frame through the second cylinder.

[0013] As a preferred solution of the composite sand making machine of the present invention, the upper spinning wheel frame includes an upper central guard plate and a lower guard plate, a material distribution plate is fixedly installed at the center of the lower guard plate, and the material enters the high-speed rotating material distribution plate through the feed hopper and is quickly screened;

[0014] The lower impeller frame includes an upper guard plate and a lower center guard plate, between which an impact plate coaxial with the material distribution plate is fixed, and the impact plate is arranged in an inverted conical cylinder. After being reflected by the impact plate, the material impacts the surface of the conical cylinder and is reflected again.

[0015] As a preferred solution of the composite sand making machine described in the present invention, the center of the distribution plate is concave downward to form a conical cavity, and two groups of small stone grooves are symmetrically opened on the surface of the distribution plate, the small stone grooves penetrate the distribution plate and are connected with the conical cavity, and a stone baffle is provided at the upper edge of the small stone groove, and the upper edge of the stone baffle is higher than the bottom of the distribution plate.

[0016] As a preferred solution of the composite sand making machine described in the present invention, a flow plate and a material guide plate are provided between the upper center guard plate and the lower guard plate, the number of the material guide plates is four groups, four groups of evenly distributed material guide channels are formed between the four groups of material guide plates, and the flow plate is laid in the material guide channel to modify the flow direction of the material and guide the material into the crushing chamber.

[0017] As a preferred embodiment of the composite sand making machine described in the present invention, the flow channel plate includes an upper flow channel plate and a lower flow channel plate, the upper flow channel plate is assembled at the upper part of the material guide channel to fit the upper center guard plate, the surface of the upper flow channel plate is provided with an upper flow channel groove, and the concave surface of the upper flow channel groove is arranged in an inclined surface; the lower flow channel plate is assembled at the lower part of the material guide channel to fit the lower guard plate, the surface of the lower flow channel plate is provided with a lower flow channel groove, and the concave surface of the lower flow channel groove is arranged in an inclined surface.

[0018] As a preferred solution of the composite sand making machine of the present invention, a throwing head for guiding and distributing materials is arranged on the flow channel plate and on one side of the crushing chamber, and the surface arc of the throwing head is consistent with the arc of the upper flow channel groove and the lower flow channel groove;

[0019] The thickness of the upper flow channel plate gradually decreases as it extends outward from the center of the wheel-spinning frame, and the thickness of the lower flow channel plate gradually increases as it extends outward from the center of the wheel-spinning frame.

[0020] As a preferred solution of the composite sand making machine of the present invention, two groups of annular convex plates are extended inwardly from the interior of the middle body, and an impact plate is installed between the two groups of annular convex plates, and an upper lining plate for protecting the inner wall of the middle body is provided on the impact plate, and the impact plate is inserted into the annular convex plate and abuts against the upper lining plate;

[0021] The impact plate is arranged in a triangular block plate, and two groups of triangular grooves are arranged on the surface of the impact plate. After the triangular grooves are opened, the surface of the impact plate has two receiving surfaces, which are an upper receiving surface and a lower receiving surface respectively. The upper receiving surface is used to receive materials in the upper crushing chamber, and the lower receiving surface is used to receive materials thrown out of the lower crushing chamber.

[0022] A sand making monitoring system for a composite sand making machine, which is implemented based on the composite sand making machine, and the sand making monitoring system includes a data acquisition module, which includes a force-sensitive resistor laid on an impact plate and a surface of the impact plate, and the force-sensitive resistors laid on the surface of the impact plate are arranged in a matrix, and the impact plate or the force-sensitive resistors on the impact plate are impacted to generate impedance data;

[0023] A data processing module generates impedance data output based on the impact plate and the force-sensitive resistor on the surface of the impact plate to obtain the number of material impacts and the location of the impact point, and forms an impact point location distribution map based on the location of the material impact point;

[0024] The data analysis and identification module obtains the impact point position distribution map, analyzes and obtains the number of times the material hits the upper receiving surface of the impact plate and the number of times the material hits the impact plate, and compares it with the number of materials input to determine whether to generate a position abnormality instruction;

[0025] According to the impact point position distribution map, the number of times the material impacts the lower receiving surface of the impact plate is analyzed and obtained, and the number of times the material impacts the lower receiving surface of the impact plate is compared with the number of materials input to determine whether to generate a speed abnormality instruction;

[0026] The execution module controls the first cylinder or the second cylinder based on the position abnormality instruction to control the position of the upper impeller frame or the lower impeller frame if a position abnormality instruction is generated, and controls the rotor based on the speed abnormality instruction to adjust the rotation speed of the impeller if a speed abnormality instruction is generated.

[0027] As a preferred solution of the sand making monitoring system of the composite sand making machine described in the present invention, the data processing and analysis module includes a displacement abnormality judgment logic for generating a position abnormality instruction and a speed judgment logic for generating a speed abnormality instruction;

[0028] The displacement abnormality judgment logic includes:

[0029] Obtain the impact point position distribution map, analyze and obtain the number of times the material hits the upper receiving surface of the impact plate, and compare it with the number of materials put in. If the number of times the material hits the upper receiving surface of the impact plate is different from the number of materials put in, generate a position abnormality instruction;

[0030] Obtain the impact point position distribution map, analyze and obtain the number of times the material hits the upper receiving surface of the impact plate and the number of times the material hits the impact plate, and compare the number of times the material hits the impact plate with the number of materials put in. If the number of times the material hits the upper receiving surface of the impact plate is the same as the number of materials put in, but the number of times the material hits the impact plate is different from the number of materials put in, generate a position abnormality instruction.

[0031] The speed determination logic includes: obtaining a distribution diagram of the impact point position, analyzing and obtaining the number of times the material impacts the upper supporting surface and the lower supporting surface of the impact plate and the number of times the material impacts the impact plate, and comparing the number of times the material impacts the upper supporting surface, the lower supporting surface and the impact plate with the number of materials. If only the number of times the material impacts the impact plate is different from the number of materials, a speed abnormality instruction is generated.

[0032] Beneficial effects of the present invention:

[0033] 1. The present invention adopts a double-layer impeller design, which includes an upper impeller frame and a lower impeller frame. The upper impeller frame and the lower impeller frame each have their own chambers to achieve a multi-level crushing function for materials. The double-layer impeller design allows materials to be processed at different heights, increasing the crushing path of the material, thereby improving the crushing efficiency and the uniformity of the material;

[0034] 2. The present invention is provided with a material distribution plate. The design of the material distribution plate allows materials of different sizes to be effectively separated according to their sizes and discharged by diversion, which helps to ensure that only materials of appropriate sizes enter the same crushing area. The collision of the divided areas avoids the different surface damage of the impact plate in the same area caused by the collision of particles of different sizes in traditional crushing and screening work. The different damage degrees in turn affect the materials, thus solving the problem of uneven crushing of materials caused by different damage degrees on the impact plate surface;

[0035] 3. Through the synergistic effect of the double-layer impeller and the impact plate, not only can the different properties and sizes of the materials be processed in different areas to avoid the problem of uneven material crushing, but also the multi-stage crushing can be achieved by utilizing the multiple reflections of the double-layer impeller and the impact plate, thereby improving the crushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0037] Figure 1 It is a schematic cross-sectional view of the overall structure of the composite sand making machine in the present invention;

[0038] Figure 2 It is a schematic cross-sectional view of the overall structure of the upper spinning wheel frame in the present invention;

[0039] Figure 3 It is a schematic cross-sectional view of the overall structure of the lower spinning wheel frame in the present invention;

[0040] Figure 4 It is a schematic cross-sectional view of the overall structure of the material distribution tray in the present invention;

[0041] Figure 5 It is a schematic diagram of the overall structure of the upper flow channel plate in the present invention;

[0042] Figure 6 It is a schematic diagram of the overall structure of the downflow channel plate of the present invention;

[0043] Figure 7 It is a sectional top view of the overall structure of the impeller in the present invention;

[0044] Figure 8 This is a schematic diagram of the internal cavity structure of the middle body of the present invention;

[0045] Fig. 9 It is a schematic diagram of the overall structure of the impact plate of the present invention.

[0046] Reference numerals: 110, feed hopper; 111, feed port; 120, middle machine body; 121, annular convex plate; 122, upper lining plate; 130, lower machine body; 131, discharge port; 200, impeller; 210, upper impeller frame; 211, upper center guard plate; 212, lower guard plate; 213, guide plate; 214, upper flow channel plate; 215, lower flow channel plate; 216, upper flow channel plate Trough; 217, lower flow trough; 218, throwing head; 220, lower wheel frame; 221, upper protective plate; 222, lower center protective plate; 223, impact plate; 230, first cylinder; 240, second cylinder; 250, main shaft; 260, material distribution plate; 261, conical cavity; 262, small stone trough; 263, stone baffle; 300, impact plate; 301, triangular trough. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0049] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0050] Example 1

[0051] Reference Figures 1 to 9 As shown, it is the first embodiment of the present invention, a composite sand making machine, comprising: a middle machine body 120, a flinger 200 and an impact plate 300;

[0052] The middle machine body 120 is provided with a feed hopper 110 with a feed inlet 111, and a lower machine body 130 with a discharge port 131; the feed hopper 110 is used to introduce the material to be processed into the composite sand making machine, and the lower machine body 130 is used to discharge the processed material; the impeller 200 is coaxial with the feed hopper 110, and a crushing chamber is formed between the impeller 200 and the middle machine body 120, and the material introduced through the feed hopper 110 enters the impeller 200, and is thrown out by the high-speed rotating impeller 200 and provides speed; the impact plate 300 is circumferentially distributed on the inner axis of the middle machine body 120, receives and reflects the material, and the high-speed rotating material hits the impact plate 300 and is crushed;

[0053] Among them, the impeller 200 includes an upper impeller frame 210 and a lower impeller frame 220. The upper impeller frame 210 and the lower impeller frame 220 both have chambers, namely an upper impeller chamber and a lower impeller chamber. The material is thrown out through the lower impeller chamber and impacts the upper layer of the impact plate 300 surface to be broken and reflected into the lower impeller chamber. The material enters the lower impeller chamber at a higher speed and is impacted and broken again, and is reflected to the lower layer of the impact plate 300 surface to be shaped.

[0054] Specifically, the material enters the composite sand making machine through the feed hopper 110 and then enters the impeller 200. In the impeller 200, the material is first accelerated and thrown out from the lower impeller cavity, hitting the upper surface of the impact plate 300, resulting in the primary crushing of the material; the crushed material is rebounded back into the lower impeller cavity, where the material is impacted again and is crushed for the second time; the material after the second crushing is then reflected to the lower surface of the impact plate 300, which helps to further shape the material, thereby ensuring the uniformity of the particle size and good shape of the final product. Here, shaping refers to the further crushing of the material.

[0055] Reference Figure 2 and Figure 3 As shown, a first cylinder 230 is fixed between the upper wheel-whip frame 210 and the lower wheel-whip frame 220. The main function of the first cylinder 230 is to provide power for the upper wheel-whip frame 210 so that it can move vertically on the surface of the lower wheel-whip frame 220. A main shaft 250 is provided at the bottom end of the lower wheel-whip frame 220. A second cylinder 240 is fixed between the main shaft 250 and the lower wheel-whip frame 220. The main shaft 250 is fixedly connected to the lower wheel-whip frame 220 through the second cylinder 240. The relative position between the upper wheel-whip frame 210 and the lower wheel-whip frame 220 is adjusted by controlling the second cylinder 240 to ensure that the material thrown out through the lower wheel-whip chamber impacts the upper surface of the impact plate 300, and the material thrown out from the lower wheel chamber impacts the lower surface of the impact plate 300.

[0056] In the vertical shaft sand making machine, the main shaft is driven to rotate by a motor and a pulley, and the rotation of the main shaft drives the rotation of the entire wheel frame. This principle is an existing technology and will not be elaborated on here.

[0057] Reference Figure 1 , Figure 2 as well as Figure 4 As shown, the upper wheel frame 210 includes an upper center guard plate 211 and a lower guard plate 212, and a material distribution plate 260 is fixedly mounted at the center of the lower guard plate 212. The material enters the high-speed rotating material distribution plate 260 through the feed hopper 110 and is quickly screened;

[0058] The center of the material distribution plate 260 is concave downward to form a conical cavity 261, and two groups of small stone grooves 262 are symmetrically opened on the surface of the material distribution plate 260. The concave conical cavity 261 helps the materials to be concentrated into a smaller area after entering the material distribution plate 260. The small stone grooves 262 penetrate the material distribution plate 260 and are connected with the conical cavity 261. The materials are constantly jumping up and down due to external vibrations. The material distribution plate 260 is also in a high-speed vibration state due to the vibration transmission. At the same time, the material distribution plate 260 rotates at an extremely high speed. The high-speed rotating material distribution plate 260 collects the smaller volume of materials. The large-volume materials cannot be guided out through the small stone groove 262 and stay on the top of the dividing plate 260. The large-volume materials piled on the top of the dividing plate 260 roll downward along the outer surface of the dividing plate 260 under the high-speed vibration of the dividing plate 260. At the same time, a stone baffle 263 is provided at the upper edge of the small stone groove 262. The upper edge of the stone baffle 263 is higher than the bottom of the dividing plate 260. The stone baffle 263 blocks the large-volume materials from being guided out along the area where the small stone groove 262 is located, and the materials are efficiently screened and guided out along different paths.

[0059] Specifically, sand and gravel of different sizes enter the concave ... In order to further enhance the screening effect, a stone baffle 263 is provided at the upper edge of each group of small stone troughs 262. The upper edge of the stone baffle 263 is higher than the bottom end of the material distribution tray 260, and the stone baffle 263 higher than the material distribution tray 260 can effectively prevent a larger volume of material from passing through the area where the small stone troughs 262 are located.

[0060] The materials are efficiently screened into different particle sizes by the material distribution plate 260 and discharged along different paths. As the material distribution plate 260 rotates at a high speed, the sand and gravel are affected by the centrifugal force and extend along four paths that spread outward from the surface of the material distribution plate 260.

[0061] Secondly, during the high-speed rotation of the material distribution plate 260, the smaller particles are more likely to slide toward the center along the inclined surface of the conical cavity 261 due to the smaller centrifugal force, while the larger particles are thrown toward the outer edge of the material distribution plate 260 due to the larger centrifugal force. The design of the small stone groove 262 helps to guide these larger particles outward in an orderly manner and finally discharge them through the small stone groove 262.

[0062] Secondly, in the impeller 200 with the same rotation speed, if large particles and small particles are to obtain the same speed, it is necessary to provide the large particles with a greater centrifugal force. Therefore, the speed of the large particles thrown out by the impeller 200 is lower than that of the small particles, that is, the small particles will reach the impact plate 300 first, and because the speed of the large particles is lower than that of the small particles, the flying time of the large particles in the crushing chamber is longer than that of the small particles. The vertical displacement of the large particles due to gravity falling when flying in the crushing chamber is greater than that of the small particles. Small particles usually collide at a higher position, while large particles collide at a lower position. The regional collision avoids the different degrees of damage to the surface of the impact plate 300 caused by the collision of particles of different sizes in the traditional crushing and screening work. This different degree of damage in turn affects the material, thereby solving the problem of uneven crushing of the material due to different degrees of damage to the surface of the impact plate 300.

[0063] Reference Figure 3 As shown, the lower wheel frame 220 includes an upper guard plate 221 and a lower center guard plate 222, and an impact plate 223 coaxial with the material distribution plate 260 is fixed between the upper guard plate 221 and the lower center guard plate 222. The impact plate 223 is set as an inverted conical cylinder. The material is reflected by the impact plate 300 and then impacts the surface of the conical cylinder and is reflected again.

[0064] When the material hits the impact plate 300, it is reflected due to the force of the impact plate 300. The reflected material enters the lower impeller cavity and hits the impact plate 223 located in the lower impeller cavity again, thereby realizing a secondary impact function.

[0065] Reference Figure 2 As shown, a flow plate and a material guide plate 213 are provided between the upper center guard plate 211 and the lower guard plate 212. The number of the material guide plates 213 is four groups. Four groups of evenly distributed material guide channels are formed between the four groups of material guide plates 213. The flow plate is laid in the material guide channel to modify the flow direction of the material and guide the material into the crushing chamber.

[0066] Specifically, after the materials are efficiently screened by the material distribution plate 260, they are divided into materials of different particle sizes and are led out along different paths. These paths correspond to the directions of the four groups of guide plates 213. The divided materials extend along four different paths and face the four groups of guide plates 213. The design of the guide plates 213 enables the materials to be accurately guided into the guide channel.

[0067] The flow channel plate and the guide plate 213 act on the material together. The flow channel plate is laid inside the guide channel to further correct the flow direction of the material and ensure that the material can smoothly enter the crushing chamber. Among them, by using the joint cooperation of the material distribution plate 260, the guide plate 213 and the flow channel plate, the materials of different particle sizes have been reasonably distributed and guided before entering the crushing chamber, thereby ensuring that the materials can evenly enter the crushing chamber for further crushing, improving the crushing efficiency, ensuring that the final output of sand and gravel has a more uniform particle size, improving the quality of the product and the work efficiency of the production line, ensuring that the final output of sand and gravel has a more uniform particle size, improving the quality of the product and the work efficiency of the production line.

[0068] Reference Figure 1 to Figure 7 As shown, the flow plate includes an upper flow plate 214 and a lower flow plate 215. The upper flow plate 214 is assembled at the upper part of the material guide channel to fit the upper center guard plate 211. The surface of the upper flow plate 214 is provided with an upper flow groove 216, and the concave surface of the upper flow groove 216 is arranged in an inclined surface; the lower flow plate 215 is assembled at the lower part of the material guide channel to fit the lower guard plate 212. The surface of the lower flow plate 215 is provided with a lower flow groove 217, and the concave surface of the lower flow groove 217 is arranged in an inclined surface, which helps the material to flow smoothly along the inclined surface and reduces the resistance of the material during the flow process.

[0069] Reference Figure 1 to Figure 7 As shown, a throwing head 218 for guiding and distributing materials is arranged on the flow channel plate and on one side of the crushing chamber. The surface arc of the throwing head 218 is consistent with the arc of the upper flow channel groove 216 and the lower flow channel groove 217. This design allows the material to smoothly transition to the throwing head 218 after flowing out of the upper flow channel groove 216 and the lower flow channel groove 217, and then be guided into the crushing chamber. The throwing head 218 not only plays a guiding role, but also can be appropriately adjusted and distributed according to the flow characteristics of the material, so that the material can be evenly distributed in the crushing chamber.

[0070] The thickness of the upper flow channel plate 214 gradually decreases as it extends outward from the center of the upper wheel-spinning frame 210 , and the thickness of the lower flow channel plate 215 gradually increases as it extends outward from the center of the upper wheel-spinning frame 210 .

[0071] Among them, the design of the gradually thinning thickness of the upper flow channel plate 214 helps to reduce the friction resistance of the material, allowing smaller particles of material to pass more smoothly; while the design of the gradually thickening thickness of the lower flow channel plate 215 can better support larger particles of material, reduce the deviation of the material under the action of gravity, and ensure that the material can accurately enter the crushing chamber along the predetermined path, so that the material is biased toward the upper surface of the impact plate 300.

[0072] Reference Figure 8-Figure 9 As shown, two groups of annular convex plates 121 extend inwardly from the interior of the middle body 120, and an impact plate 300 is installed between the two groups of annular convex plates 121. An upper lining plate 122 for protecting the inner wall of the middle body 120 is provided on the impact plate 300. The impact plate 300 is inserted into the annular convex plates 121 and abuts against the upper lining plate 122.

[0073] The impact plate 300 is arranged in a triangular block plate, and two groups of triangular grooves 301 are arranged on the surface of the impact plate 300. After the triangular grooves 301 are opened, the surface of the impact plate 300 has two receiving surfaces, which are an upper receiving surface and a lower receiving surface. The upper receiving surface is used to receive the material in the upper crushing chamber, and the lower receiving surface is used to receive the material thrown out of the lower crushing chamber.

[0074] Specifically, the impact plate 300 is in the form of a triangular block plate, and two groups of triangular grooves 301 are designed on its surface. The purpose of this design is to optimize the crushing path of the material so that the material can be completely refined after hitting the impact plate 300 twice. After the triangular grooves 301 are opened, two receiving surfaces are formed on the surface of the impact plate 300: an upper receiving surface and a lower receiving surface. The upper receiving surface and the lower receiving surface correspond to the materials thrown out of the upper crushing chamber and the lower crushing chamber respectively; the upper receiving surface is mainly used to receive the material from the upper crushing chamber. When the material thrown out of the upper crushing chamber hits the upper receiving surface, preliminary crushing occurs, and due to the impact force, the material will be rebounded into the lower impeller chamber, and will be refined by hitting the impact plate 223 again. At the same time, the material will be rebounded to the lower receiving surface again. The lower receiving surface receives the material thrown out from the lower crushing chamber and finally refined and shaped.

[0075] After multi-stage crushing, the impact plate 300 can not only effectively crush the material, but also guide it to be crushed and reflected multiple times in the crushing chamber according to the different properties and sizes of the material, thereby improving the crushing effect and ensuring that the particle size of the final product is more uniform and the shape is better. At the same time, it also reduces the problem of uneven material crushing caused by uneven wear on the surface of the impact plate 300.

[0076] A sand making monitoring system for a composite sand making machine includes a data acquisition module, which includes force-sensitive resistors laid on the surface of an impact plate 300 and an impact plate 223, the force-sensitive resistors laid on the surface of the impact plate 300 are arranged in a matrix, and the force-sensitive resistors on the impact plate 300 or the impact plate 223 are impacted to generate impedance data;

[0077] A data processing module generates impedance data output based on the force-sensitive resistors on the surfaces of the impact plate 300 and the impact plate 223 to obtain the number of material impacts and the location of the impact points, and forms an impact point location distribution map based on the material impact point locations;

[0078] The data analysis and identification module obtains the impact point position distribution map, analyzes and obtains the number of times the material impacts the upper receiving surface of the impact plate 300 and the number of times the material impacts the impact plate 223, and compares it with the number of materials input to determine whether to generate a position abnormality instruction;

[0079] According to the impact point position distribution map, the number of times the material impacts the lower receiving surface of the impact plate 300 is analyzed and obtained, and the number of times the material impacts the lower receiving surface of the impact plate 300 is compared with the number of materials input to determine whether to generate a speed abnormality instruction;

[0080] The execution module controls the first cylinder 230 or the second cylinder 240 based on the position abnormality instruction to control the position of the upper impeller frame 210 or the lower impeller frame 220 if a position abnormality instruction is generated, and controls the rotor based on the speed abnormality instruction to adjust the rotation speed of the impeller 200 if a speed abnormality instruction is generated.

[0081] The data analysis and discrimination module includes a displacement abnormality discrimination logic for generating a position abnormality instruction and a speed discrimination logic for generating a speed abnormality instruction;

[0082] The displacement anomaly judgment logic includes:

[0083] Obtain the impact point position distribution map, analyze and obtain the number of times the material hits the upper receiving surface of the impact plate 300, and compare it with the number of materials put in. If the number of times the material hits the upper receiving surface of the impact plate 300 is different from the number of materials put in, generate a position abnormality instruction;

[0084] Obtain the impact point position distribution diagram, analyze and obtain the number of times the material hits the upper receiving surface of the impact plate 300 and the number of times the material hits the impact plate 223, and compare the number of times the material hits the impact plate 223 with the number of materials input. If the number of times the material hits the upper receiving surface of the impact plate 300 is the same as the number of materials input, but the number of times the material hits the impact plate 223 is different from the number of materials input, generate a position abnormality instruction.

[0085] The speed determination logic includes: obtaining the impact point position distribution map, analyzing and obtaining the number of times the material hits the upper supporting surface and the lower supporting surface of the impact plate 300 and the number of times the material hits the impact plate 223, and comparing the number of times the material hits the upper supporting surface, the lower supporting surface and the impact plate 223 of the impact plate 300 with the number of materials. If only the number of times the material hits the impact plate 223 is different from the number of materials, a speed abnormality instruction is generated.

[0086] Working principle: The first material put in is the simulated material, which is less and not easy to break by impact. The purpose is to prevent the material from being difficult to track after breaking and the mutual interference between the materials. In order to ensure that the material can be broken in multiple stages, the initial speed of the impeller 200 is limited to ensure that the material can be impacted and reflected multiple times under the action of the impeller 200;

[0087] Obtain the impact point position distribution diagram, analyze and obtain the number of times the material hits the upper receiving surface of the impact plate 300. When the number of times the material hits the upper receiving surface of the impact plate 300 is the same as the number of material inputs, that is, it indicates that all the materials thrown out of the upper impeller chamber hit the upper receiving surface of the impact plate 300, the position of the upper impeller frame 210 is reasonable. If the number of times the material hits the upper receiving surface of the impact plate 300 is different from the number of material inputs, the upper impeller frame 210 is driven by the first cylinder 230 to move vertically on the surface of the lower upper impeller frame 210, so that all the materials thrown out of the upper impeller chamber hit the upper receiving surface of the impact plate 300.

[0088] Obtain the number of times the material hits the impact plate 223. When the number of times the material hits the impact plate 223 and the number of times the material hits the upper receiving surface of the impact plate 300 are the same as the number of material inputs, it means that all the materials reflected by the upper receiving surface of the impact plate 300 hit the impact plate 223, indicating that the position of the upper wheel-throwing frame 210 is reasonable. If the number of times the material hits the upper receiving surface of the impact plate 300 is the same as the number of material inputs, it means that the position of the lower wheel-throwing frame 220 is reasonable. If the number of times the material hits the impact plate 223 is different from the number of material inputs, it means that the position of the lower wheel-throwing frame 220 needs to be adjusted. At this time, first move the position of the second cylinder 240, and then adjust the position of the first cylinder 230 to ensure that the upper wheel-throwing frame 210 is in the original position, and the position of the lower wheel-throwing frame 220 is adjusted to a suitable range, so that all the materials reflected by the upper receiving surface of the impact plate 300 hit the impact plate 223.

[0089] Obtain the impact point position distribution diagram, analyze and obtain the number of times the material hits the lower receiving surface of the impact plate 300. When the number of times the material hits the upper receiving surface of the impact plate 300 and the number of times the material hits the impact plate 223 are the same as the number of material inputs, but the number of times the material hits the lower receiving surface of the impact plate 300 is different from the number of material inputs, it indicates that during the material running in the crushing chamber, the material falls to the discharge port 131 and is discharged without touching the lower receiving surface of the impact plate 300. At this time, the output end speed of the motor is controlled, the rotation speed of the impeller 200 is increased, and the running time of the material in the crushing chamber is reduced;

[0090] If the speed change causes the location of the material impact point to change, re-measure according to the above process.

[0091] In addition, in the present invention, the surface of the impact plate 223 is a conical surface, which causes the material impacting the surface of the impact plate 223 to move obliquely downward, and thus does not consider the situation where the material is reflected by the impact plate 223 to the upper receiving surface of the impact plate 300.

[0092] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A composite sand making machine, characterized in that: include: A middle machine body (120) is provided with a feed hopper (110) with a feed port (111) on the upper part, and a lower machine body (130) with a discharge port (131) on the lower part, and a material distribution plate (260) is provided inside the middle machine body (120), and materials enter the rotating material distribution plate (260) through the feed hopper (110) and are screened; The impeller (200) is coaxial with the feed hopper (110) and forms a crushing chamber with the middle machine body (120); An impact plate (300) is circumferentially distributed on the inner axis of the middle body (120) to receive and reflect the material; The impeller (200) comprises an upper impeller frame (210) and a lower impeller frame (220), each of the upper impeller frame (210) and the lower impeller frame (220) having a chamber therein, namely an upper impeller chamber and a lower impeller chamber, wherein materials are ejected from the lower impeller chamber and impact the upper surface of the impact plate (300) to be crushed and reflected into the lower impeller chamber, and materials entering the lower impeller chamber are impacted and crushed again and reflected to the lower surface of the impact plate (300) to be shaped; A first cylinder (230) is fixed between the upper wheel-spinning frame (210) and the lower wheel-spinning frame (220), and the upper wheel-spinning frame (210) is driven by the first cylinder (230) to move vertically upward on the surface of the lower wheel-spinning frame (220). A main shaft (250) is provided at the bottom end of the lower wheel-spinning frame (220), and a second cylinder (240) is fixed between the main shaft (250) and the lower wheel-spinning frame (220), and the main shaft (250) is fixedly connected to the lower wheel-spinning frame (220) through the second cylinder (240); The upper spinning wheel frame (210) comprises an upper central protective plate (211) and a lower protective plate (212), and the material distribution plate (260) is fixed at the center of the lower protective plate (212); The lower wheel frame (220) includes an upper guard plate (221) and a lower center guard plate (222). An impact plate (223) coaxial with the material distribution plate (260) is fixed between the upper guard plate (221) and the lower center guard plate (222). The impact plate (223) is arranged in the shape of an inverted conical cylinder. The material is reflected by the impact plate (300) and then impacts the surface of the conical cylinder and is reflected again. The center of the material distribution plate (260) is concave downward to form a conical cavity (261), and two groups of small stone grooves (262) are symmetrically opened on the surface of the material distribution plate (260), the small stone grooves (262) penetrate the material distribution plate (260) and are connected with the conical cavity (261), and a stone baffle (263) is provided at the upper edge of the small stone groove (262), and the upper edge of the stone baffle (263) is higher than the bottom end of the material distribution plate (260).

2. The composite sand making machine according to claim 1, characterized in that: A flow channel plate and a material guide plate (213) are provided between the upper center guard plate (211) and the lower guard plate (212). The number of the material guide plates (213) is four groups, and four groups of evenly distributed material guide channels are formed between the four groups of the material guide plates (213). The flow channel plate is laid in the material guide channel to modify the flow direction of the material and guide the material into the crushing chamber.

3. The composite sand making machine according to claim 2, characterized in that: The flow channel plate comprises an upper flow channel plate (214) and a lower flow channel plate (215); the upper flow channel plate (214) is mounted on the upper part of the material guide channel to fit the upper center protection plate (211); an upper flow channel groove (216) is provided on the surface of the upper flow channel plate (214); the concave surface of the upper flow channel groove (216) is arranged in an inclined surface; the lower flow channel plate (215) is mounted on the lower part of the material guide channel to fit the lower protection plate (212); a lower flow channel groove (217) is provided on the surface of the lower flow channel plate (215); the concave surface of the lower flow channel groove (217) is arranged in an inclined surface.

4. The composite sand making machine according to claim 3, characterized in that: A throwing head (218) for guiding and distributing materials is disposed on the flow channel plate and on one side of the crushing chamber, and the surface arc of the throwing head (218) is consistent with the arc of the upper flow channel groove (216) and the lower flow channel groove (217); The thickness of the upper flow channel plate (214) gradually decreases as it extends outward from the center of the impeller (200) frame, and the thickness of the lower flow channel plate (215) gradually increases as it extends outward from the center of the impeller (200) frame.

5. The composite sand making machine according to claim 4, characterized in that: Two groups of annular convex plates (121) extend inwardly from the interior of the middle body (120), and an impact plate (300) is installed between the two groups of annular convex plates (121). An upper lining plate (122) for protecting the inner wall of the middle body (120) is provided on the impact plate (300), and the impact plate (300) is inserted into the annular convex plates (121) and abuts against the upper lining plate (122); The impact plate (300) is arranged in the form of a triangular block plate, and two groups of triangular grooves (301) are arranged on the surface of the impact plate (300). After the triangular grooves (301) are arranged, the surface of the impact plate (300) has two receiving surfaces, the two receiving surfaces are an upper receiving surface and a lower receiving surface, respectively. The upper receiving surface is used to receive materials in the upper crushing chamber, and the lower receiving surface is used to receive materials thrown out of the lower crushing chamber.

6. A sand making monitoring system for a composite sand making machine, which is implemented based on the composite sand making machine according to any one of claims 1 to 5, characterized in that: The sand making monitoring system comprises a data acquisition module, which comprises force-sensitive resistors laid on the surface of the impact plate (300) and the impact plate (223), the force-sensitive resistors laid on the surface of the impact plate (300) are arranged in a matrix, and the force-sensitive resistors on the impact plate (300) or the impact plate (223) are impacted to generate impedance data; A data processing module generates impedance data output based on force-sensitive resistors on the surfaces of the impact plate (300) and the impact plate (223) to obtain the number of material impacts and the location of the impact points, and forms an impact point location distribution map based on the material impact point locations; The data analysis and identification module obtains the impact point position distribution map, analyzes and obtains the number of times the material impacts the upper receiving surface of the impact plate (300) and the number of times the material impacts the impact plate (223), and compares them with the number of materials input to determine whether to generate a position abnormality instruction; According to the impact point position distribution diagram, the number of times the material impacts the lower receiving surface of the impact plate (300) is analyzed and obtained, and the number of times the material impacts the lower receiving surface of the impact plate (300) is compared with the number of materials input to determine whether a speed abnormality instruction is generated; The execution module controls the first cylinder (230) or the second cylinder (240) based on the position abnormality instruction to control the position of the upper impeller frame (210) or the lower impeller frame (220) if a position abnormality instruction is generated, and controls the rotor based on the speed abnormality instruction to adjust the rotation speed of the impeller (200) if a speed abnormality instruction is generated.

7. The sand making monitoring system of a composite sand making machine according to claim 6, characterized in that: The data analysis and discrimination module includes a displacement abnormality discrimination logic for generating a position abnormality instruction and a speed discrimination logic for generating a speed abnormality instruction; The displacement abnormality judgment logic includes: Obtaining a distribution diagram of the impact point positions, analyzing and obtaining the number of times the material impacts the upper receiving surface of the impact plate (300), and comparing it with the number of materials input; if the number of times the material impacts the upper receiving surface of the impact plate (300) is different from the number of materials input, generating a position abnormality instruction; Obtaining a distribution diagram of the impact point positions, obtaining the number of times the material impacts the impact plate (223), and comparing the number of times the material impacts the impact plate (223) with the number of materials input; if the number of times the material impacts the upper receiving surface of the impact plate (300) is the same as the number of materials input, but the number of times the material impacts the impact plate (223) is different from the number of materials input, generating a position abnormality instruction; The speed discrimination logic comprises: obtaining a distribution diagram of the impact point positions, analyzing and obtaining the number of times the material impacts the upper receiving surface and the lower receiving surface of the impact plate (300) and the number of times the material impacts the impact plate (223), and comparing the number of times the material impacts the upper receiving surface, the lower receiving surface and the impact plate (223) of the impact plate (300) with the number of materials; if only the number of times the material impacts the impact plate (223) is different from the number of materials, generating a speed abnormality instruction.

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