A raw material screening device for mortar production

Abstract

The present invention provides a raw material screening device for mortar production, which relates to the technical field of mortar raw material screening, and includes: a box body, a feed hopper is arranged on the top of the box body, a plurality of discharge ports are arranged on the side wall of the box body, and a plurality of first filter components are arranged downwardly inclined inside the box body, which are respectively connected with the plurality of discharge ports; a second filter component is arranged on the outer side of the box body corresponding to the lower side of each discharge port, a plugging plate capable of blocking the raw materials is arranged on the second filter component, and a lifting drive component capable of driving the plugging plate to move in the vertical direction is arranged on the second filter component; the second filter component includes a U-shaped plate, and a guide screen mesh that fits the bottom of the plugging plate is arranged on the inclined surface on the lower side of the inner wall of the U-shaped plate, and a material discharge slot is provided at the bottom of the U-shaped plate. The present invention has a reasonable structure, can continuously screen raw materials, has high screening efficiency, can thoroughly screen the raw materials, and has high screening quality.

Description

Technical Field

[0001] The invention relates to the technical field of mortar raw material screening, and in particular to a raw material screening device for mortar production. Background Art

[0002] The difference between building mortar and concrete is that it does not contain coarse aggregate. It is made of cementitious material, fine aggregate and water in a certain proportion. According to its use, it is divided into masonry mortar and plastering mortar. According to the different materials used, it is divided into cement mortar, lime mortar, gypsum mortar and cement lime mixed mortar. Mortar raw materials such as ore need to be screened after crushing. It is necessary to screen out large particles of raw materials to obtain small particles of raw materials to ensure the quality of the mortar after it is made. Therefore, a raw material screening device for mortar production is needed.

[0003] In the prior art, when the raw material screening device for mortar production is in use, when collecting the screened raw materials, a cart or box is generally used for collection. When the collection is full, it is necessary to stop the machine, that is, stop feeding, and then replace the cart or box, otherwise the screened raw materials will be scattered. A lot of time is wasted when replacing the cart or box, and the machine cannot be shut down for continuous screening, resulting in low screening efficiency. Moreover, when the raw materials are screened, the filtration is generally set at an angle, and the raw materials fall at a relatively fast speed, resulting in the outflow of raw materials that are not filtered in time, incomplete screening, and unqualified raw materials are easily mixed in the qualified raw materials, resulting in low screening quality. There is an urgent need for a raw material screening device for mortar production to solve the above-mentioned problems. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a raw material screening device for mortar production to solve the problems raised in the above-mentioned background technology. The present invention has a reasonable structure, can continuously screen the raw materials, has high screening efficiency, can thoroughly screen the raw materials, and has high screening quality.

[0005] In order to achieve the above object, the present invention is implemented through the following technical scheme: a raw material screening device for mortar production, comprising: A box body, wherein a feed hopper is arranged on the top of the box body, a plurality of discharge ports are arranged on the side wall of the box body, and a plurality of first filter components respectively connected with the plurality of discharge ports are arranged downwardly inclined inside the box body; A second filter assembly is provided on the outer side of the box body corresponding to the lower side of each of the discharge ports, the second filter assembly is provided with a blocking plate capable of blocking the raw materials, and the second filter assembly is provided with a lifting drive assembly capable of driving the blocking plate to move in the vertical direction; The second filter assembly comprises a U-shaped plate, a material discharge slot is provided at the bottom of the U-shaped plate, and a guide screen mesh is provided on the inclined surface of the lower side of the inner wall of the U-shaped plate and is in contact with the bottom of the blocking plate; A material guide plate is arranged on a side of the U-shaped plate away from the box body and tilted downward, and the lengths of adjacent material guide plates decrease from top to bottom; The first filter assembly includes a filter screen which is arranged downwardly at an angle inside the box body and is connected to the discharge port. The apertures of the filter screens in the multiple first filter assemblies decrease from top to bottom, and the apertures of the guide screens in the multiple second filter assemblies decrease from top to bottom. The multiple first filter assemblies and the multiple second filter assemblies correspond one to one.

[0006] Furthermore, the upper end surface of the U-shaped plate is higher than the upper side of the inner wall of the corresponding discharge port, the upper end surface of the guide screen is lower than the lower side of the inner wall of the corresponding discharge port, the aperture of the guide screen is the same as the aperture of the corresponding filter screen, and the vertical cross-sectional area of ​​the guide screen is larger than the vertical cross-sectional area of ​​the discharge port.

[0007] Furthermore, the lifting drive assembly includes a movable groove opened on the inner wall of the box body, a screw rod penetrating the blocking plate is arranged inside the movable groove, a connecting column penetrating the top of the U-shaped plate is arranged on the top of the screw rod, a bearing is arranged at the connection between the connecting column and the U-shaped plate, a first gear is arranged on the top of the connecting column, a fixed plate is arranged on the side wall of the U-shaped plate, a driving motor is arranged at the bottom of the fixed plate, and a second gear meshing with the first gear is arranged on the output shaft of the driving motor.

[0008] Further, the blocking plate comprises a lifting plate arranged between a pair of movable grooves in the lifting drive assembly, and a baffle plate which fits the guide screen is arranged at the bottom of the lifting plate; The longitudinal length of the baffle is the same as the longitudinal length between the inner walls of the U-shaped plate.

[0009] Furthermore, it also includes a dispersing assembly disposed inside the box body and used to disperse the raw materials entering the box body from the feed hopper; The dispersion component includes a guide plate arranged downwardly and tilted inside the box body, a dispersion motor is arranged at the bottom of the guide plate, a rotating column arranged above the guide plate is arranged on the output shaft of the dispersion motor, and a plurality of dispersion columns are arranged on the side wall of the rotating column.

[0010] Furthermore, the lengths of the plurality of dispersion columns increase successively from top to bottom, and the lower end of the guide plate is placed directly above the high end of the first filter assembly.

[0011] Furthermore, it also includes a plurality of flow blocking components arranged inside the box body and used to block the raw material on the surface of the first filter component; The baffle assembly includes a rotating motor arranged on the side wall of the box body, the output shaft of the rotating motor is provided with a rotating shaft arranged inside the box body, and the side wall of the rotating shaft is provided with a baffle plate for blocking the raw material on the surface of the first filter assembly.

[0012] Furthermore, avoidance grooves are symmetrically provided on the inner walls of the box body on both sides of the rotating shaft, and a guide groove connected to the avoidance groove is provided on the inner wall of the box body; It also includes a vibration component disposed inside the box and used to beat the inner wall of the box; The vibration assembly includes a guide column arranged inside the guide groove, a guide block placed inside the guide groove is arranged on the side wall of the guide column, a return spring is arranged between the bottom of the guide block and the lower side of the inner wall of the guide groove and is sleeved on the side wall of the guide column, and a beating plate is arranged on the side wall of the rotating shaft and is placed inside the avoidance groove and used to press the guide block.

[0013] Furthermore, the flapping plate includes a mounting ring arranged on the side wall of the rotating shaft and placed inside the avoidance groove, and the side wall of the mounting ring is provided with a plurality of square blocks for pressing the guide block.

[0014] Furthermore, a baffle is provided between the adjacent U-shaped plates of the second filter assembly, and a side of the baffle close to the guide screen is on the same vertical plane as the inner wall of the U-shaped plate; A sealing groove is provided inside the box body, a sealing plate for shielding the avoidance groove and the guide groove is provided inside the sealing groove, and bolts are provided at the connection between the sealing plate and the box body.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: The present invention drives the blocking plate to move in the vertical direction of the second filter component through the lifting drive component, and the bottom of the blocking plate is in contact with the top of the guide screen on the second filter component. The blocking plate blocks the raw materials to prevent them from continuing to move, and the replacement of the cart or box for collecting the raw materials can be completed without stopping the machine.

[0016] When the replacement is completed, the lifting drive assembly drives the blocking plate to move upward to remove the obstruction to the raw materials, and the raw materials continue to fall into the replaced cart or box for collection, so that continuous screening can be carried out to improve the screening efficiency.

[0017] The lengths of adjacent guide plates are designed to decrease from top to bottom. The landing points of the raw materials screened out of multiple second filter components are different, so that suitable carts or boxes can be placed according to different landing points to facilitate the collection of raw materials; when the raw materials at one landing point are collected, the cart or box at that landing point can be replaced without affecting the collection of raw materials at other landing points; at the same time, the aperture design of the guide screen in the second filter component is the same as the aperture of the filter in the corresponding first filter component, thereby extending the length of raw material screening, and then extending the screening time of raw materials, and being able to screen the raw materials thoroughly, avoiding the mixed unqualified raw materials in the qualified raw materials due to incomplete screening, and improving the screening quality. The apertures of the filter in the first filter component at the lowest end of the box and the guide screen in the second filter component at the lowest end are the smallest or replaced with plates, which is convenient for the outflow of the last screened raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 A three-dimensional diagram of a raw material screening device for mortar production according to an embodiment of the present invention; Figure 2 According to an embodiment of the present invention Figure 1 A magnified view of middle; Figure 3 It is a front cross-sectional view of a raw material screening device for mortar production according to one embodiment of the present invention; Figure 4 According to an embodiment of the present invention Figure 3 Enlarged view of middle B; Figure 5 A three-dimensional diagram of a dispersing component in a raw material screening device for mortar production according to an embodiment of the present invention; Figure 6 A three-dimensional diagram of the connection between the flow blocking component and the vibration component in a raw material screening device for mortar production according to an embodiment of the present invention; Figure 7 A three-dimensional diagram of the connection between multiple second filter components in a raw material screening device for mortar production according to an embodiment of the present invention; Figure 8 A three-dimensional diagram of a sealing plate in a raw material screening device for mortar production according to an embodiment of the present invention; Fig. 9 A three-dimensional diagram of a blocking plate in a raw material screening device for mortar production according to an embodiment of the present invention; Fig.10 A perspective view of a second filter assembly in a raw material screening device for mortar production according to an embodiment of the present invention; In the figure: 1, box body; 1001, avoidance groove; 1002, sealing groove; 1003, guide groove; 2, feed hopper; 3, discharge port; 4, first filter assembly; 5, second filter assembly; 51, U-shaped plate; 52, guide screen; 53, feed channel; 6, guide plate; 7, blocking plate; 71, lifting plate; 72, baffle; 8, lifting drive assembly; 81, first gear; 82, second gear; 83, drive motor; 84, fixing plate; 85, connecting column; 86, bearing; 87. Moving groove; 88. Screw rod; 9. Baffle plate; 10. Baffle assembly; 101. Baffle plate; 102. Rotating shaft; 103. Rotating motor; 11. Dispersion assembly; 111. Dispersion motor; 112. Guide plate; 113. Dispersion column; 114. Rotating column; 12. Sealing plate; 121. Bolt; 13. Vibration assembly; 131. Guide block; 132. Guide column; 133. Reset spring; 134. Flapping plate; 1341. Mounting ring; 1342. Square block. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1 , Figure 3 and Fig.10 As shown, the present invention provides a technical solution: a raw material screening device for mortar production, comprising: A box body 1, a feed hopper 2 is arranged on the top of the box body 1, a plurality of discharge ports 3 are arranged on the side wall of the box body 1, and a plurality of first filter components 4 are arranged downwardly inclined inside the box body 1 and are respectively connected to the plurality of discharge ports 3; The side wall of the box body 1 is provided with a plurality of second filter components 5 respectively placed below the plurality of discharge ports 3, the second filter components 5 are provided with a blocking plate 7 capable of blocking the raw materials, and the second filter components 5 are symmetrically provided with a pair of lifting drive components 8 capable of driving the blocking plate 7 to move in the vertical direction; The second filter assembly 5 includes a U-shaped plate 51 disposed on the side wall of the box body 1 and below the discharge port 3. A guide screen 52 is disposed on the inclined surface of the lower inner wall of the U-shaped plate 51 and is fitted with the bottom of the blocking plate 7. A material discharge slot 53 is provided at the bottom of the U-shaped plate 51. A material guide plate 6 is provided on one side of the U-shaped plate 51 away from the box body 1 and tilted downward, and the lengths of adjacent material guide plates 6 decrease from top to bottom, wherein the material guide plate 6 is a U-shaped plate; The first filter assembly 4 includes a filter screen that is tilted downward and arranged inside the box body 1 and is connected to the discharge port 3. The apertures of the filter screens in the multiple first filter assemblies 4 decrease from top to bottom, and the apertures of the guide screens 52 in the multiple second filter assemblies 5 decrease from top to bottom. The multiple first filter assemblies 4 and the multiple second filter assemblies 5 correspond to each other one by one. The design drives the blocking plate 7 to move vertically on the second filter assembly 5 through the lifting drive assembly 8. The bottom of the blocking plate 7 fits with the top of the guide screen 52 on the second filter assembly 5. The blocking plate 7 blocks the raw material to prevent it from continuing to move. The replacement of the cart or box for collecting the raw material can be completed without stopping the machine. When the replacement is completed, the lifting drive assembly 8 drives the blocking plate 7 to move upward to lose the blocking of the raw material, and the raw material continues to fall into the replaced cart or box for collection, so that continuous screening can be performed to improve the screening efficiency. The lengths of adjacent guide plates 6 are designed to decrease from top to bottom. The landing points of the raw materials screened out of multiple second filter components 5 are different, so that suitable carts or boxes can be placed according to different landing points to facilitate the collection of raw materials; when the raw materials at one landing point are collected, the cart or box at that landing point can be replaced without affecting the collection of raw materials at other landing points; at the same time, the aperture design of the guide screen 52 in the second filter component 5 is the same as the aperture of the filter in the first filter component 4 at its corresponding position, which extends the length of raw material screening, thereby extending the screening time of raw materials, and can thoroughly screen the raw materials to avoid the mixed unqualified raw materials in the screened qualified raw materials due to incomplete screening, thereby improving the screening quality. The apertures of the filter in the first filter component 4 at the lowest end of the box body 1 and the guide screen 52 in the second filter component 5 at the lowest end are the smallest or replaced with plates, so as to facilitate the outflow of the last screened raw materials.

[0021] Reference Figure 1 and Figure 3 The upper end surface of the U-shaped plate 51 is higher than the upper side of the inner wall of the corresponding discharge port 3, the upper end surface of the guide screen 52 is lower than the lower side of the inner wall of the corresponding discharge port 3, the aperture of the guide screen 52 is the same as the aperture of the corresponding filter screen, and the vertical cross-sectional area of ​​the guide screen 52 is larger than the vertical cross-sectional area of ​​the discharge port 3. This design facilitates the raw material to completely enter the second filter component 5 along the first filter component 4 to prevent the raw material from falling.

[0022] Reference Figure 1 and Figure 2The lifting drive assembly 8 includes a moving groove 87 opened on the inner wall of the box body 1, a screw rod 88 penetrating the blocking plate 7 is arranged inside the moving groove 87, a connecting column 85 penetrating the top of the U-shaped plate 51 is arranged on the top of the screw rod 88, a bearing 86 is arranged at the connection between the connecting column 85 and the U-shaped plate 51, a first gear 81 is arranged on the top of the connecting column 85, a fixing plate 84 is arranged on the side wall of the U-shaped plate 51, a driving motor 83 is arranged at the bottom of the fixing plate 84, and a second gear 82 meshing with the first gear 81 is arranged on the output shaft of the driving motor 83. The design drives the second gear 82 to rotate by the driving motor 83 in the lifting drive assembly 8, and the second gear 82 drives the first gear 81 to rotate, and the first gear 81 drives the connecting column 85 to rotate along the bearing 86, and the connecting column 85 drives the screw rod 88 to rotate, and the screw rod 88 drives the blocking plate 7 to move in the vertical direction along the inner wall of the U-shaped plate 51. The blocking plate 7 moves in the vertical direction and fits with the guide screen 52, which can block and remove the shielding of the raw materials. The screw rod 88 is connected to the blocking plate 7 by a thread, and the position where the lower side of the annular side of the screw rod 88 is connected to the U-shaped plate 51 is a smooth surface and a bearing 86 can be set at the connection, thereby improving the stability of rotation.

[0023] Reference Figure 1 , Figure 7 and Fig. 9 The blocking plate 7 includes a lifting plate 71 disposed between a pair of movable grooves 87 in the lifting drive assembly 8, and a baffle 72 is disposed at the bottom of the lifting plate 71 to fit with the guide screen 52; The longitudinal length of the baffle 72 is the same as the longitudinal length between the inner walls of the U-shaped plate 51. This design uses the lifting plate 71 to facilitate the screw 88 to drive the lifting plate 71 to move along the movable groove 87, thereby driving the baffle 72 to move in the vertical direction. The lower end surface of the baffle 72 is an inclined surface that fits the guide screen 52. Due to the design of the baffle 72, the raw material can be blocked while preventing the lower side of the inner wall of the movable groove 87 from entering the raw material, so that the lower side of the inner wall of the movable groove 87 is higher than the upper end surface of the blocking plate 7, thereby improving the rationality of the design.

[0024] Reference Figure 3 and Figure 5 , further comprising a dispersing assembly 11 disposed inside the box body 1 and used to disperse the raw materials entering the box body 1 from the feed hopper 2; The dispersion component 11 includes a guide plate 112 arranged downwardly and tilted inside the box body 1, a dispersion motor 111 is arranged at the bottom of the guide plate 112, a rotating column 114 arranged above the guide plate 112 is arranged on the output shaft of the dispersion motor 111, and a plurality of dispersion columns 113 are arranged on the side wall of the rotating column 114. In this design, the dispersion motor 111 in the dispersion component 11 drives the rotating column 114 to rotate, and the rotating column 114 drives the dispersion column 113 to rotate. When the feed hopper 2 enters the box body 1, the raw material is stirred under the action of the dispersion column 113, so that the raw material is dispersed and falls on the high end of the first filter component 4 along the guide plate 112, so that the raw material is evenly dispersed on the first filter component 4, and moves from the high end of the first filter component 4 to its low end, avoiding incomplete concentrated screening of the raw material. By dispersing the raw material, the thoroughness of the raw material screening can be improved, so that the raw material can be screened on a large area on the first filter component 4, wherein the longitudinal length of the guide plate 112 is the same as the longitudinal length between the inner walls of the box body 1.

[0025] Reference Figure 5 The lengths of the plurality of dispersion columns 113 increase from top to bottom, and the lower end of the guide plate 112 is placed directly above the high end of the first filter assembly 4, which improves the rationality of the design.

[0026] Reference Figure 1 , Figure 3 and Figure 6 , further comprising a plurality of flow blocking components 10 disposed inside the housing 1 and used for blocking the raw material on the surface of the first filter component 4; The flow blocking component 10 includes a rotating motor 103 arranged on the side wall of the housing 1, and a rotating shaft 102 arranged inside the housing 1 is arranged on the output shaft of the rotating motor 103, and a flow blocking plate 101 for blocking the raw material on the surface of the first filter component 4 is arranged on the side wall of the rotating shaft 102. The design drives the rotating shaft 102 to rotate by the rotating motor 103 in the flow blocking component 10, and the rotating shaft 102 rotates and drives the flow blocking plate 101 to rotate in a vertical state with the first filter component 4 to block the raw material and slow down the speed of the raw material moving downward along the surface of the first filter component 4. When the flow blocking plate 101 continues to rotate, the flow blocking of the raw material is lost, so that the raw material can continue to move downward along the surface of the first filter component 4. When the rotating shaft 102 continues to rotate and drives the flow blocking plate 101 to rotate in a vertical state with the first filter component 4, the raw material is blocked again, and the cycle is repeated to achieve the flow blocking of the raw material and slow down the speed of the raw material moving downward along the surface of the first filter component 4, so that the raw material is thoroughly screened, and the screening is not thorough. The screening of qualified raw materials is avoided, thereby improving the screening quality. The directions of the baffles 101 in the plurality of baffle components 10 can be set according to the requirements. When the baffle 101 in one of the baffle components 10 is in a vertical state with the first filter component 4, the baffle 101 in another baffle component 10 may not be in a vertical state with the first filter component 4. For example, when the baffle 101 in one of the baffle components 10 is in a vertical state with the first filter component 4 and close to the first filter component 4, the baffle 101 in another transversely adjacent baffle component 10 is in a parallel state with the first filter component 4, which can achieve multiple obstructions to the raw materials to slow down the flow rate of the raw materials, further allowing the raw materials to be thoroughly screened, avoiding the incomplete screening resulting in the doping of unqualified raw materials in the screened qualified raw materials, thereby improving the screening quality. Among them, the baffles 101 in a baffle component 10 can be evenly distributed in multiples according to the requirements, and the baffle 101 is provided with a chamfer at the corner of one side away from the rotating shaft 102.

[0027] Reference Figure 3 , Figure 4 and Figure 6 On the inner walls of the two opposite sides of the box body 1, avoidance grooves 1001 are symmetrically opened on both sides of the rotating shaft 102, and the inner wall of the box body 1 is opened with a guide groove 1003 connected with the avoidance groove 1001; It also includes a vibration component 13 disposed inside the box body 1 and used to beat the inner wall of the box body 1; The vibration component 13 includes a guide column 132 arranged inside the guide groove 1003, a guide block 131 arranged inside the guide groove 1003 is arranged on the side wall of the guide column 132, a return spring 133 is arranged between the bottom of the guide block 131 and the lower side of the inner wall of the guide groove 1003 and is sleeved on the side wall of the guide column 132, and a slapping plate 134 is arranged on the side wall of the rotating shaft 102 and is placed inside the avoidance groove 1001 and used to press the guide block 131. The design arranges a slapping plate 134 on the side wall of the rotating shaft 102, and when the rotating shaft 102 rotates, the slapping plate 134 is driven to press the guide block 131. When the slapping plate 134 continues to rotate and loses the pressure on the guide block 131, the return spring 133 rebounds and knocks the top wall of the guide groove 1003, thereby vibrating the box body 1, so that the raw materials on the first filter component 4 and the second filter component 5 are completely discharged, and at the same time, the vibration can drive the raw materials to vibrate, thereby improving the screening efficiency.

[0028] Reference Figure 4 and Figure 6 The flapping plate 134 includes a mounting ring 1341 arranged on the side wall of the rotating shaft 102 and placed inside the avoidance groove 1001. The side wall of the mounting ring 1341 is provided with a plurality of square blocks 1342 for pressing the guide block 131. This design facilitates the square blocks 1342 to rotate along the mounting ring 1341 to press the guide block 131, and the mounting ring 1341 rotates along the rotating shaft 102.

[0029] Reference Figure 1 and Figure 7 A baffle plate 9 is arranged between the U-shaped plates 51 of adjacent second filter components 5. The side of the baffle plate 9 close to the guide screen 52 is on the same vertical plane as the inner wall of the U-shaped plate 51. This design facilitates guiding the raw material so that the raw material falls completely from the second filter component 5 to the second filter component 5 below it, avoiding the raw material from falling from the front and rear sides of the second filter component 5.

[0030] Reference Figure 4 and Figure 8 A sealing groove 1002 is provided inside the box body 1, and a sealing plate 12 is provided inside the sealing groove 1002 for shielding the avoidance groove 1001 and the guide groove 1003. Bolts 121 are provided at the connection between the sealing plate 12 and the box body 1. The sealing groove 1002 is connected with the avoidance groove 1001 and the guide groove 1003. This design prevents the raw materials from entering the avoidance groove 1001 and the guide groove 1003.

[0031] Reference Figure 1-Figure 10As an embodiment of the present invention: when it is necessary to screen the raw materials, the raw materials are put into the feed hopper 2, the raw materials enter the interior of the box body 1 and fall on the guide plate 112, so that the dispersion motor 111 in the dispersion component 11 works to drive the rotating column 114 to rotate, and the rotation of the rotating column 114 drives the dispersion column 113 to rotate, and the raw materials are stirred under the action of the dispersion column 113, so that the raw materials are dispersed and fall on the high end of the first filter component 4 along the guide plate 112, so that the raw materials are evenly dispersed on the first filter component 4, and move from the high end of the first filter component 4 to its low end, avoiding incomplete concentrated screening of the raw materials; by dispersing the raw materials, the thoroughness of the raw material screening can be improved, the raw materials are screened on a large area on the first filter component 4, the raw materials are screened through the first filter component 4, and the screened raw materials move downward along its surface, and the screening passes through the first filter component 4. The raw materials enter the first filter component 4 on the lower side for further screening, and then the rotating motor 103 in the blocking component 10 is operated to drive the rotating shaft 102 to rotate. The rotating shaft 102 rotates and drives the blocking plate 101 to rotate and is in a vertical state with the first filter component 4 to block the raw materials, and slow down the speed of the raw materials moving downward along the surface of the first filter component 4. When the blocking plate 101 continues to rotate and loses the blocking of the raw materials, the raw materials can continue to move downward along the surface of the first filter component 4. When the rotating shaft 102 continues to rotate and drives the blocking plate 101 to rotate and is in a vertical state with the first filter component 4, the raw materials are blocked again, and the cycle is repeated to achieve blocking of the raw materials and slow down the speed of the raw materials moving downward along the surface of the first filter component 4, so that the raw materials can be thoroughly screened, and incomplete screening can be avoided, thereby avoiding the mixed unqualified raw materials in the qualified raw materials, thereby improving the screening quality. As the rotating shaft 102 rotates, it drives the flapping plate 134 to press the guide block 131. When the flapping plate 134 continues to rotate and loses the pressure on the guide block 131, the reset spring 133 rebounds and hits the top wall of the guide groove 1003, causing the box body 1 to vibrate, thereby allowing the raw materials on the first filter component 4 and the second filter component 5 to be completely discharged. At the same time, the vibration can drive the raw materials to vibrate, thereby improving the screening efficiency.

[0032] The screened raw materials fall on the surface of the guide screen 52 of the second filter assembly 5, continue to move and screen, and finally flow out from the guide plate 6, wherein the aperture of the guide screen 52 in the second filter assembly 5 is the same as the aperture of the filter screen in the first filter assembly 4 at its corresponding position, which prolongs the length of the raw material screening, thereby prolonging the screening time of the raw materials, making the raw materials thoroughly screened, avoiding the mixed unqualified raw materials in the screened qualified raw materials due to incomplete screening, thereby improving the screening quality. Since the lengths of adjacent guide plates 6 decrease from top to bottom, the landing points of the raw materials flowing out of multiple guide plates 6 are different, and suitable carts or boxes can be placed according to different landing points, so as to facilitate the collection of raw materials; when the raw materials at one landing point are collected, the cart or box at the landing point can be replaced without affecting the collection of raw materials at other landing points, wherein the apertures of the filter screen in the first filter assembly 4 at the lowest end of the box body 1 and the guide screen 52 in the second filter assembly 5 at the lowest end are the smallest or replaced with a plate, so as to facilitate the outflow of the final screened raw materials.

[0033] When the trolley or box is full of collected materials and needs to be replaced, the driving motor 83 in the lifting driving assembly 8 is operated to drive the second gear 82 to rotate, and the second gear 82 rotates to drive the first gear 81 to rotate, and the first gear 81 rotates to drive the connecting column 85 to rotate along the bearing 86, and the connecting column 85 rotates to drive the screw rod 88 to rotate, and the screw rod 88 rotates to drive the blocking plate 7 to move in the vertical direction along the inner wall of the U-shaped plate 51, so that the blocking plate 7 moves in the vertical direction and fits with the guide screen 52, which can block the raw materials. At this time, the raw materials will not move along the guide plate 6, and the trolley or box that has completed collecting the raw materials is replaced. When the replacement is completed, the driving motor 83 is operated at the same time to drive the second gear 82 to rotate in the opposite direction, so that the screw rod 88 drives the blocking plate 7 to move upward and lose the blocking of the raw materials. The raw materials continue to move downward along the surface of the guide plate 6 and fall into the replaced trolley or box, so that the replacement of the trolley or box for collecting raw materials can be completed without stopping the machine, and screening can be carried out continuously to improve the screening efficiency.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A raw material screening device for mortar production, comprising: A box body (1), wherein a feed hopper (2) is arranged on the top of the box body (1), a plurality of discharge ports (3) are arranged on the side wall of the box body (1), and a plurality of first filter components (4) are arranged downwardly inclined inside the box body (1) and are respectively connected to the plurality of discharge ports (3); Features: A second filter assembly (5) is provided on the outer side of the box body (1) below each of the discharge ports (3); the second filter assembly (5) is provided with a blocking plate (7) capable of blocking raw materials; and the second filter assembly (5) is provided with a lifting drive assembly (8) capable of driving the blocking plate (7) to move in a vertical direction; The second filter assembly (5) comprises a U-shaped plate (51), the bottom of the U-shaped plate (51) is provided with a material discharge slot (53), and a guide screen (52) is provided on the inclined surface on the lower side of the inner wall of the U-shaped plate (51) and is in contact with the bottom of the blocking plate (7); A material guide plate (6) is arranged on a side of the U-shaped plate (51) away from the box body (1) and tilted downward, and the lengths of adjacent material guide plates (6) decrease from top to bottom; The first filter assembly (4) comprises a filter screen which is arranged in a downwardly inclined manner inside the box body (1) and is connected to the discharge port (3); the apertures of the filter screens in the plurality of first filter assemblies (4) decrease from top to bottom; the apertures of the guide screens (52) in the plurality of second filter assemblies (5) decrease from top to bottom; and the plurality of first filter assemblies (4) and the plurality of second filter assemblies (5) correspond one to one.

2. The raw material screening device for mortar production according to claim 1, characterized in that: The upper end surface of the U-shaped plate (51) is higher than the upper side of the inner wall of the corresponding discharge port (3), the upper end surface of the guide screen (52) is lower than the lower side of the inner wall of the corresponding discharge port (3), the aperture of the guide screen (52) is the same as the aperture of the corresponding filter screen, and the vertical cross-sectional area of ​​the guide screen (52) is larger than the vertical cross-sectional area of ​​the discharge port (3).

3. The raw material screening device for mortar production according to claim 1, characterized in that: The lifting drive assembly (8) comprises a movable groove (87) provided on the inner wall of the box body (1); a screw rod (88) penetrating the blocking plate (7) is arranged inside the movable groove (87); a connecting column (85) penetrating the top of the U-shaped plate (51) is arranged at the top of the screw rod (88); a bearing (86) is arranged at the connection between the connecting column (85) and the U-shaped plate (51); a first gear (81) is arranged at the top of the connecting column (85); a fixing plate (84) is arranged on the side wall of the U-shaped plate (51); a driving motor (83) is arranged at the bottom of the fixing plate (84); and a second gear (82) meshing with the first gear (81) is arranged on the output shaft of the driving motor (83).

4. The raw material screening device for mortar production according to claim 3, characterized in that: The blocking plate (7) comprises a lifting plate (71) arranged between a pair of movable grooves (87) in the lifting drive assembly (8), and a baffle (72) is arranged at the bottom of the lifting plate (71) and is in contact with the guide screen (52); The longitudinal length of the baffle plate (72) is the same as the longitudinal length between the inner walls of the U-shaped plate (51).

5. The raw material screening device for mortar production according to claim 4, characterized in that: It also includes a dispersing component (11) disposed inside the box (1) and used to disperse the raw materials entering the box (1) from the feed hopper (2); The dispersion assembly (11) comprises a guide plate (112) arranged in a downwardly inclined manner inside the box (1); a dispersion motor (111) is arranged at the bottom of the guide plate (112); a rotating column (114) arranged above the guide plate (112) is arranged on the output shaft of the dispersion motor (111); and a plurality of dispersion columns (113) are arranged on the side wall of the rotating column (114).

6. The raw material screening device for mortar production according to claim 5, characterized in that: The lengths of the plurality of dispersion columns (113) increase in sequence from top to bottom, and the lower end of the guide plate (112) is placed directly above the upper end of the first filter assembly (4).

7. The raw material screening device for mortar production according to claim 1, characterized in that: It also includes a plurality of flow blocking components (10) arranged inside the box (1) and used to block the flow of raw materials on the surface of the first filter component (4); The flow blocking component (10) comprises a rotating motor (103) arranged on a side wall of the housing (1); a rotating shaft (102) arranged inside the housing (1) is arranged on an output shaft of the rotating motor (103); and a flow blocking plate (101) for blocking the flow of raw materials on the surface of the first filter component (4) is arranged on a side wall of the rotating shaft (102).

8. The raw material screening device for mortar production according to claim 7, characterized in that: On the inner walls of the two opposite sides of the box body (1), avoidance grooves (1001) are symmetrically provided and are arranged on both sides of the rotating shaft (102); and on the inner wall of the box body (1), a guide groove (1003) is provided and is connected to the avoidance grooves (1001); It also includes a vibration component (13) disposed inside the box (1) and used to beat the inner wall of the box (1); The vibration component (13) comprises a guide column (132) arranged inside the guide groove (1003); a guide block (131) arranged inside the guide groove (1003) is arranged on the side wall of the guide column (132); a return spring (133) sleeved on the side wall of the guide column (132) is arranged between the bottom of the guide block (131) and the lower side of the inner wall of the guide groove (1003); and a beating plate (134) arranged inside the avoidance groove (1001) and used for pressing the guide block (131) is arranged on the side wall of the rotating shaft (102).

9. The raw material screening device for mortar production according to claim 8, characterized in that: The flapping plate (134) comprises a mounting ring (1341) arranged on the side wall of the rotating shaft (102) and placed inside the avoidance groove (1001); the side wall of the mounting ring (1341) is provided with a plurality of square blocks (1342) for pressing the guide block (131).

10. The raw material screening device for mortar production according to claim 8, characterized in that: A baffle plate (9) is provided between the U-shaped plates (51) of adjacent second filter assemblies (5), and a side of the baffle plate (9) close to the guide screen (52) is on the same vertical plane as the inner wall of the U-shaped plate (51); A sealing groove (1002) is provided inside the box body (1), a sealing plate (12) for shielding the avoidance groove (1001) and the guide groove (1003) is provided inside the sealing groove (1002), and bolts (121) are provided at the connection between the sealing plate (12) and the box body (1).

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