Continuous stone removing device for particle materials

Abstract

The utility model provides a continuous stone removing device for particle materials. The continuous stone removing device comprises a box body, a feeding hopper arranged at the top of the box body, an air blowing unit located at the bottom in the box body and a stone removing unit arranged between the feeding hopper and the air blowing unit. The stone removing unit comprises a sieve plate, an oscillator and a sieve plate removing structure, the sieve plate is obliquely arranged in the box relative to the horizontal plane, a stone removing opening is formed in the connecting position of the box and the upper end of the sieve plate, and a clean particle outlet is formed in the connecting position of the box and the lower end of the sieve plate. The oscillator is arranged at the bottom of the sieve plate. The sieve plate removing structure is arranged below the sieve plate in parallel. According to the device, continuous and efficient stone and impurity removal of particle materials is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of removing stones and impurities from granular materials, and in particular to a device for continuously removing stones from granular materials. Background Art

[0002] The destoner is a kind of impurity removal equipment that utilizes the difference in density and suspension speed between granular materials (paddy, brown rice, rice, wheat, etc.) and minerals (mainly siderophore, etc.), and uses mechanical wind power and a screen surface that reciprocates in a certain trajectory to separate minerals from granular materials. It is mainly the back-and-forth translation of the screen, under the action of airflow, that classifies the materials according to different specific gravities.

[0003] For example, when removing stones from melon seeds and gourd seeds, a destoner is also commonly used to remove impurities. However, during operation, impurities in the melon seeds and gourd seeds that are equivalent to the mesh aperture are likely to clog the mesh, and the mesh usually needs to be cleaned manually at regular intervals, which wastes a long time and reduces the screening efficiency of the melon seeds and gourd seeds. Utility Model Content

[0004] The present application provides a device for continuously removing stones from granular materials, so as to solve the above-mentioned problems mentioned in the background technology.

[0005] The present application provides a continuous stone removal device for granular materials, comprising: a box body, a feed hopper arranged on the top of the box body, a blowing unit located at the bottom of the box body, and a stone removal unit arranged between the feed hopper and the blowing unit.

[0006] The stone removal unit includes a screen plate, an oscillator and a screen plate cleaning structure. The screen plate is arranged in a box body at an angle relative to a horizontal plane. A stone removal port is provided at the position where the box body and the upper end of the screen plate are connected, and a clean particle outlet is provided at the position where the box body and the lower end of the screen plate are connected.

[0007] The oscillator is arranged at the bottom of the sieve plate, and the sieve plate cleaning structure is arranged parallelly below the sieve plate.

[0008] Optionally, the screen plate cleaning structure includes a double-rack reciprocating mechanism, a fixing rod, a connecting rod and a cleaning brush, and both ends of the double-rack reciprocating mechanism are movably connected to the two side walls of the box body respectively.

[0009] The fixed rod is arranged at the top of the double-rack reciprocating mechanism and is parallel to the length direction of the double-rack reciprocating mechanism. A plurality of connecting rods are vertically connected to both sides of the fixed rod. Cleaning brushes are vertically arranged on the plurality of connecting rods, and the top of the cleaning brush abuts against the screen plate.

[0010] Optionally, the double-rack reciprocating mechanism includes: a frame parallel to the screen plate, an incomplete gear, a rotating shaft, a driving motor, and a support rod.

[0011] An upper rack and a lower rack are respectively arranged in parallel at the top and bottom of the frame, an incomplete gear is arranged in the frame and meshed with the upper rack and the lower rack, the incomplete gear is connected to one end of the rotating shaft, and the other end of the rotating shaft is connected to the driving motor, the two ends of the frame are respectively fixedly connected to the support rod, and the end of the support rod away from the frame is movably connected to the side wall of the box.

[0012] Optionally, a through hole is opened on the side wall of the box, and the end of the support rod away from the frame passes through the through hole and is located outside the box, and a limit block is set at the end of the support rod located outside the box, and the vertical cross-section of the limit block is larger than the area of ​​the through hole.

[0013] Optionally, an end of the support rod away from the frame is connected to an elastic component, and the elastic component includes a column, a spring, a protrusion and a slide groove.

[0014] One end of the column is connected to the side wall of the box, a protrusion is arranged at the end of the support rod and is located in the column, a slide groove is opened in the column along the length direction, the protrusion is located in the slide groove and is slidably connected to the slide groove, one end of the spring is connected to the end of the support rod, and the other end of the spring is connected to the side wall of the box.

[0015] Optionally, baffles are detachably provided on both sides of the frame.

[0016] Optionally, the blowing unit includes a blower, an air duct and an air distribution plate. The blower is arranged at the bottom of the box, the air outlet end of the blower is connected to the air duct, and the air outlet end of the air duct is connected to the air distribution plate.

[0017] Optionally, the top of the box is connected to a negative pressure fan, and the outlet end of the negative pressure fan is connected to a light debris collection tank through a pipeline.

[0018] The continuous stone removal device for granular materials provided in the present application realizes continuous and efficient stone removal and impurity removal of granular materials, and has the following beneficial effects compared with the prior art:

[0019] (1) By setting a blowing unit at the bottom of the box body for blowing, the airflow passes through the sieve holes in the sieve plate from bottom to top, and at the same time, an oscillator is set to make the sieve plate vibrate back and forth. Impurities such as granular materials and crushed stones fall on the sieve plate and are affected by the vibration of the oscillator and the airflow from the blowing unit from bottom to top. Under the combined action of the airflow and vibration, due to the different specific gravities of the granular materials and the crushed stones, the heavier crushed stones move toward the higher end of the sieve plate, while the granular materials move toward the lower end of the sieve plate. Finally, the crushed stones are discharged from the stone removal port, and the granular materials are discharged and collected from the net particle outlet, so that the granular materials are separated from the crushed stone impurities, thereby achieving the purpose of purifying the granular materials. At the same time, a sieve plate cleaning structure is set to remove impurities blocked in the sieve holes, so that the airflow of the blowing unit can be guaranteed to act on the granular materials and crushed stone impurities without stopping the operation of the device, which is conducive to the efficient separation of granular materials and crushed stone impurities, thereby ensuring that the stone removal device can operate continuously for a long time, thereby improving the stone removal efficiency of the granular materials.

[0020] (2) The screen plate cleaning structure includes an upper rack, a lower rack, a frame, an incomplete gear, a rotating shaft, a driving motor, a support rod, a fixing rod, a connecting rod and a cleaning brush. The driving motor provides power to drive the rotating shaft to rotate, and the rotating shaft drives the incomplete gear to rotate, so that the incomplete gear intermittently meshes with the upper rack and the lower rack, so that the frame is driven to reciprocate during the meshing process. While the frame reciprocates, it drives the cleaning brush on the connecting rod to interact with the impurities in the sieve holes on the screen plate, thereby causing the impurities to separate from the sieve holes and restore the hollow state of the sieve holes, which is conducive to the airflow from the blowing unit passing through the sieve holes to act on the granular materials and crushed stone impurities, thereby improving the stone removal effect of the stone removal device on the granular materials.

[0021] (3) By detachably setting baffles on both sides of the frame, it is possible to prevent impurities that may fall between the upper rack and the lower rack in the frame, which would cause the incomplete gear to be unable to mesh with the upper rack and the lower rack, thereby causing the frame to be unable to reciprocate and the sieve holes to be unable to be cleaned. The setting of the baffle prevents the impurities from affecting the incomplete gear, the upper rack, and the lower rack, ensuring the normal operation of the sieve plate cleaning structure, thereby ensuring the stone removal efficiency of the particulate material. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of a continuous stone removal device for particulate materials provided in one embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of a sieve plate cleaning structure provided in one embodiment of the present application;

[0025] Figure 3 A schematic diagram of the connection between a frame and a box provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of the structure of a frame provided in an embodiment of the present application;

[0027] Figure 5 A schematic structural diagram of a device for continuously removing stones from granular materials provided in another embodiment of the present application;

[0028] Description of reference numerals:

[0029] 1: box body, 2: feed hopper, 5: blowing unit, 6: negative pressure fan, 110: stone removal port, 120: net particle outlet, 310: sieve plate, 320: oscillator, 410: upper rack, 420: lower rack, 430: frame, 431: baffle, 440: incomplete gear, 450: rotating shaft, 460: driving motor, 470: supporting rod, 471: limiting block, 472: column, 474: bump, 475: slide, 480: fixing rod, 490: connecting rod, 491: cleaning brush, 510: blower, 520: air duct, 530: air balancing plate, 610: light debris collection tank, 473: spring. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0031] like Figure 1 As shown, the present application provides a continuous stone removal device for particulate materials, comprising: a box body 1, a feed hopper 2 arranged on the top of the box body 1, a blowing unit 5 located at the bottom of the box body 1, and a stone removal unit arranged between the feed hopper 2 and the blowing unit 5.

[0032] The stone removal unit includes a sieve plate 310, an oscillator 320 and a sieve plate cleaning structure. The sieve plate 310 is arranged in a box 1 at an angle relative to a horizontal plane. A stone removal port 110 is provided at a position where the box 1 is connected to the upper end of the sieve plate 310, and a clean particle outlet 120 is provided at a position where the box 1 is connected to the lower end of the sieve plate 310.

[0033] The oscillator 320 is disposed at the bottom of the sieve plate 310 , and the sieve plate cleaning structure is disposed parallel to the bottom of the sieve plate 310 .

[0034] Specifically, the continuous stone removal device for granular materials is used to remove impurities of similar size to the granular materials. The granular materials are fed into the box body 1 through the feed hopper 2, and the blowing unit 5 is arranged at the bottom of the box body 1 to blow air to the granular materials from bottom to top. The stone removal unit includes a sieve plate 310, an oscillator 320 and a sieve plate cleaning structure. The granular material enters the box body 1 from the feed hopper 2 and falls onto the sieve plate 310. The sieve plate 310 is a sieve plate with fish scale holes. The oscillator 320 is started to reciprocate the sieve plate 310. The granular material and impurities such as crushed stone fall on the sieve plate 310 and are subjected to the vibration of the oscillator 320 and the airflow from the blowing unit 5 from bottom to top. Under the combined action of the airflow and vibration, due to the different specific gravities of the granular material and the crushed stone, the heavier crushed stone moves toward the higher end of the sieve plate 310, while the granular material moves toward the lower end of the sieve plate 310. The crushed stone is discharged from the stone removal port 110, and the granular material is discharged from the net particle outlet 120 and collected, so that the granular material is separated from the crushed stone impurities, thereby achieving the purpose of purifying the granular material.

[0035] In the process of stone removal, it is inevitable that impurities similar to the sieve holes in the sieve plate 310 are embedded in the sieve holes. In long-term operation, the sieve holes are blocked, resulting in a reduction in the airflow from the blowing unit 5 through the sieve holes, which in turn leads to a reduction in the force of the airflow on the granular material and crushed stone impurities, and the stone removal device needs to be shut down, and the impurities in the sieve holes are manually removed before being put into use. The stone removal device is intermittently operated, which leads to a reduction in the stone removal efficiency of the granular material. During the operation of the device, the sieve plate cleaning structure is started to remove the impurities blocked in the sieve holes, so that the airflow of the blowing unit 5 can be used on the granular material and crushed stone impurities without stopping the operation of the device, which helps to efficiently separate the granular material from the crushed stone impurities, thereby ensuring that the stone removal device can operate continuously for a long time, and improving the stone removal efficiency of the granular material.

[0036] Through the above technical scheme, continuous and efficient stone removal and impurity removal of granular materials are achieved. By setting a blowing unit at the bottom of the box body for blowing, the airflow passes through the sieve holes in the sieve plate from bottom to top, and an oscillator is set to make the sieve plate vibrate back and forth. Impurities such as granular materials and crushed stones fall on the sieve plate and are affected by the vibration of the oscillator and the airflow from the blowing unit from bottom to top. Under the joint action of the airflow and vibration, due to the different specific gravities of granular materials and crushed stones, the heavier crushed stones move to the higher end of the sieve plate, while the granular materials move to the lower end of the sieve plate. Finally, the crushed stones are discharged from the stone removal port, and the granular materials are discharged and collected from the net particle outlet, and the granular materials are separated from the crushed stone impurities, so as to achieve the purpose of purifying the granular materials. At the same time, a sieve plate clearing structure is set to remove impurities blocked in the sieve holes, so that the airflow of the blowing unit can be guaranteed to act on the granular materials and crushed stone impurities without stopping the operation of the device, which is conducive to the efficient separation of granular materials and crushed stone impurities, thereby ensuring that the stone removal device can operate continuously for a long time, and improving the stone removal efficiency of the granular materials.

[0037] like Figure 1 and Figure 2 As shown, optionally, the screen plate cleaning structure includes a double-rack reciprocating mechanism, a fixing rod 480, a connecting rod 490 and a cleaning brush 491, and both ends of the double-rack reciprocating mechanism are movably connected to the two side walls of the box body 1 respectively.

[0038] The fixed rod 480 is arranged at the top of the double-rack reciprocating mechanism and is parallel to the length direction of the double-rack reciprocating mechanism. Multiple connecting rods 490 are vertically connected to both sides of the fixed rod 480. Cleaning brushes 491 are vertically arranged on the multiple connecting rods 490, and the top of the cleaning brush 491 abuts against the screen plate 310.

[0039] Specifically, the double-rack reciprocating mechanism can make reciprocating linear motion along the length direction. The fixed rod 480 is arranged at the top of the double-rack reciprocating mechanism. Multiple connecting rods 490 are vertically connected to both sides of the fixed rod 480. Cleaning brushes 491 are vertically arranged on the multiple connecting rods 490. When the double-rack reciprocating mechanism reciprocates, it drives the fixed rod 480 and the connecting rod 490 to also reciprocate, so that the cleaning brush 491 on the connecting rod 490 acts on the impurities in the sieve holes on the sieve plate 310, thereby making the impurities leave the sieve holes and restore the hollow state of the sieve holes, which is beneficial for the airflow from the blowing unit 5 to pass through the sieve holes to act on the particulate material and crushed stone impurities, thereby improving the stone removal effect of the stone removal device on the particulate material.

[0040] The cleaning brush 491 is a brush with a certain hardness, such as iron wire, steel wire, etc.

[0041] Optionally, the double-rack reciprocating mechanism includes: a frame 430 parallel to the screen plate 310 , an incomplete gear 440 , a rotating shaft 450 , a driving motor 460 , and a support rod 470 .

[0042] An upper rack 410 and a lower rack 420 are respectively arranged in parallel at the top and bottom of the frame 430, an incomplete gear 440 is arranged in the frame 430 and meshingly connected with the upper rack 410 and the lower rack 420, the incomplete gear 440 is connected to one end of a rotating shaft 450, and the other end of the rotating shaft 450 is connected to a driving motor 460, and both ends of the frame 430 are respectively fixedly connected to a support rod 470, and one end of the support rod 470 away from the frame 430 is movably connected to the side wall of the box body 1.

[0043] Specifically, the frame 430 is used to fix the upper rack 410 and the lower rack 420, and the upper rack 410 and the lower rack 420 are meshed with the incomplete gear 440, so that the double-rack reciprocating mechanism reciprocates. The driving motor 460 provides power to drive the rotating shaft 450 to rotate, and the rotating shaft 450 drives the incomplete gear 440 to rotate, so that the incomplete gear 440 intermittently meshes with the upper rack 410 and the lower rack 420. Since the incomplete gear 440 is fixed, the frame 430 is driven to reciprocate during the meshing process with the upper rack 410 and the lower rack 420. The two ends of the frame 430 are respectively fixedly connected to the support rod 470, and the end of the support rod 470 away from the frame 430 is movably connected to the side wall of the box 1, so that the frame 430 reciprocates with the rotation of the incomplete gear 440.

[0044] The frame 430 is parallel to the sieve plate 310 , so that during the reciprocating motion of the frame 430 , the cleaning brush 491 can always contact and act on the sieve holes, thereby ensuring the cleaning of the sieve holes.

[0045] like Figure 1 As shown, optionally, a through hole is opened in the side wall of the box body 1, and the end of the support rod 470 away from the frame body 430 passes through the through hole and is located outside the box body 1, and a limit block 471 is provided at the end of the support rod 470 located outside the box body 1, and the vertical cross-section of the limit block 471 is larger than the area of ​​the through hole.

[0046] Specifically, the support rod 470 is used to support the frame 430. The reciprocating motion of the frame 430 drives the support rod 470 to reciprocate together. The end of the support rod 470 away from the frame 430 passes through the through hole, so that the movement direction of the frame 430 is limited during the reciprocating motion, so that the frame 430 can only reciprocate along the inclined direction of the screen plate 310 (the direction of movement of the upper rack 410 and the lower rack 420), thereby avoiding directional deviation of the frame 430 during the movement, which is beneficial to the long-term stable operation of the stone removal device and improves the efficiency of stone removal of particulate materials.

[0047] A limit block 471 is provided at one end of the support rod 470 located outside the box body 1. The vertical cross-section of the limit block 471 is larger than the area of ​​the through hole. The limit block 471 can prevent the support rod 470 from detaching from the through hole in the side wall of the box body 1 during reciprocating motion, thereby further improving the stability of the stone device operation.

[0048] like Figure 3 As shown, optionally, one end of the support rod 470 away from the frame 430 is connected to an elastic component, and the elastic component includes a column 472 , a spring 473 , a protrusion 474 , and a slide groove 475 .

[0049] One end of the column 472 is connected to the side wall of the box body 1, the protrusion 474 is arranged at the end of the support rod 470 and is located in the column 472, a slide groove 475 is opened in the column 472 along the length direction, the protrusion 474 is located in the slide groove 475 and is slidably connected to the slide groove 475, one end of the spring 473 is connected to the end of the support rod 470, and the other end of the spring 473 is connected to the side wall of the box body 1.

[0050] Specifically, the support rod 470 is connected to the box body 1 through an elastic component, which includes a column 472, a spring 473, a protrusion 474, and a slide groove 475. The protrusion 474 at the end of the support rod 470 is arranged in the slide groove 475 and is slidably connected to the slide groove 475. The column 472, the slide groove 475, the spring 473 and the support rod 470 and the screen plate 310 are in the same inclination direction. During the reciprocating motion of the frame body 430, the support rod 470 is driven to move, and the support rod 470 drives the protrusion 474 to slide in the slide groove 475. The setting of the protrusion 474 and the slide groove 475 limits the movement direction of the support rod 470, avoids the direction deviation of the frame body 430 during the movement, and is conducive to the long-term stable operation of the stone removal device.

[0051] One end of the spring 473 is connected to the end of the support rod 470 , and the other end of the spring 473 is connected to the side wall of the box body 1 , which further supports the support rod 470 and prevents the protrusion 474 from escaping from the slide groove 475 .

[0052] Optionally, baffles 431 are detachably provided on both sides of the frame 430 .

[0053] Specifically, the baffle 431 is detachably connected to the outer periphery of the side of the frame 430, so that impurities that may fall can be prevented from falling between the upper rack 410 and the lower rack 420 in the frame 430, which would cause the incomplete gear 440 to be unable to mesh with the upper rack 410 and the lower rack 420, thereby causing the frame 430 to be unable to reciprocate and the sieve holes to be unable to be cleaned. The setting of the baffle 431 prevents the impurities from affecting the incomplete gear 440, the upper rack 410, and the lower rack 420, ensuring the normal operation of the sieve plate cleaning structure, thereby ensuring the stone removal efficiency of the particulate material.

[0054] like Figure 5 As shown, optionally, the blowing unit 5 includes a blower 510 , an air duct 520 and an air equalizing plate 530 , the blower 510 is arranged at the bottom of the box 1 , the air outlet end of the blower 510 is connected to the air duct 520 , and the air outlet end of the air duct 520 is connected to the air equalizing plate 530 .

[0055] Specifically, the blower 510 is turned on to blow air from bottom to top into the box 1, and the airflow is transmitted to the air equalizing plate 530 through the air duct 520. The air equalizing plate 530 evenly distributes the airflow, so that the airflow blowing through the sieve plate 310 is evenly distributed, which is beneficial for the particulate material and the gravel impurities on the sieve plate 310 to be affected by the airflow in a similar manner, avoiding the airflow passing through the sieve plate 310 being locally too large or too small, which is beneficial for the efficient separation of the particulate material and the gravel impurities.

[0056] like Figure 5 As shown, optionally, the top of the box body 1 is connected to a negative pressure fan 6, and the outlet end of the negative pressure fan 6 is connected to a light debris collection tank 610 through a pipeline.

[0057] Specifically, the granular material also contains a small amount of light impurities, and the negative pressure fan 6 provides suction to suck out the light impurities in the falling granular material, thereby further removing impurities from the granular material. The sucked out light impurities are transported to the light debris collection tank 610 through a pipeline for centralized waste treatment.

[0058] The technical solution of the present application is described in detail below with reference to specific embodiments.

[0059] The operation process of the continuous stone removal device for particulate materials in this embodiment is as follows:

[0060] Taking the stone removal of melon seeds as an example, the operating principle of the continuous stone removal device for granular materials of the present application is described. The negative pressure fan 6 and the blower 510 are turned on, the blower 510 blows air from bottom to top into the box 1, and the air duct 520 transmits the airflow to the air distribution plate 530, and the air distribution plate 530 evenly distributes the airflow and then passes through the sieve holes in the sieve plate from bottom to top.

[0061] At the same time, the oscillator 320 is started to vibrate the sieve plate 310 back and forth, and the melon seeds containing impurities such as gravel enter the box body 1 from the feed hopper 2 and fall onto the sieve plate 310. They are affected by the vibration of the oscillator 320 and the airflow from the wind plate 530 from bottom to top. Under the combined action of the airflow and vibration, due to the different specific gravities of the melon seeds and the gravel, the heavier gravel moves toward the higher end of the sieve plate 310, while the melon seeds move toward the lower end of the sieve plate 310. The gravel is discharged from the stone removal port 110, and the melon seeds are discharged from the clean particle outlet 120 and collected, so that the melon seeds are separated from the gravel impurities, thereby achieving the purpose of purifying the melon seeds.

[0062] During operation, the impurities blocked in the sieve holes are removed through the sieve plate cleaning structure. The driving motor 460 is turned on at a fixed time to provide power, driving the rotating shaft 450 to rotate, and the rotating shaft 450 drives the incomplete gear 440 to rotate, so that the incomplete gear 440 intermittently meshes with the upper rack 410 and the lower rack 420. Since the incomplete gear 440 is fixed, the frame 430 is driven to reciprocate during the meshing process with the upper rack 410 and the lower rack 420. While the frame 430 reciprocates, it drives the fixed rod 480 and the connecting rod 490 to reciprocate, so that the cleaning brush 491 on the connecting rod 490 acts on the impurities in the sieve holes on the sieve plate 310, so that the impurities are separated from the sieve holes and the hollow state of the sieve holes is restored.

[0063] At the same time, the negative pressure fan 6 provides suction to suck out the light impurities in the falling melon seeds containing impurities such as gravel, and further remove the impurities from the melon seeds. The sucked out light impurities are transported to the light debris collection tank 610 through a pipeline for centralized waste treatment.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for continuous stone removal of granular materials, characterized in that: include: A box body (1), a feed hopper (2) arranged at the top of the box body (1), a blowing unit (5) located at the bottom of the box body (1), and a stone removal unit arranged between the feed hopper (2) and the blowing unit (5); The stone removal unit comprises a sieve plate (310), an oscillator (320) and a sieve plate cleaning structure, wherein the sieve plate (310) is arranged in the box body (1) at an angle relative to a horizontal plane, a stone removal opening (110) is provided at a position where the box body (1) is connected to an upper end of the sieve plate (310), and a clean particle outlet (120) is provided at a position where the box body (1) is connected to a lower end of the sieve plate (310); The oscillator (320) is arranged at the bottom of the sieve plate (310), and the sieve plate cleaning structure is arranged in parallel below the sieve plate (310).

2. The continuous stone removal device for particulate materials according to claim 1, characterized in that: The screen plate cleaning structure comprises a double-rack reciprocating mechanism, a fixing rod (480), a connecting rod (490) and a cleaning brush (491), and the two ends of the double-rack reciprocating mechanism are respectively movably connected to the two side walls of the box body (1); The fixed rod (480) is arranged at the top of the double-rack reciprocating mechanism and is parallel to the length direction of the double-rack reciprocating mechanism. A plurality of connecting rods (490) are vertically connected to both sides of the fixed rod (480). The cleaning brushes (491) are vertically arranged on the plurality of connecting rods (490), and the top of the cleaning brush (491) abuts against the screen plate (310).

3. The continuous stone removal device for particulate materials according to claim 2, characterized in that: The double-rack reciprocating mechanism comprises: a frame (430) parallel to the screen plate (310), an incomplete gear (440), a rotating shaft (450), a driving motor (460), and a supporting rod (470); An upper rack (410) and a lower rack (420) are respectively arranged in parallel at the top and bottom of the frame (430); the incomplete gear (440) is arranged in the frame (430) and meshedly connected with the upper rack (410) and the lower rack (420); the incomplete gear (440) is connected to one end of the rotating shaft (450); the other end of the rotating shaft (450) is connected to the driving motor (460); the two ends of the frame (430) are respectively fixedly connected to the support rod (470); and the end of the support rod (470) away from the frame (430) is movably connected to the side wall of the box (1).

4. The continuous stone removal device for particulate materials according to claim 3, characterized in that: A through hole is provided on the side wall of the box body (1); one end of the support rod (470) away from the frame body (430) passes through the through hole and is located outside the box body (1); and a limit block (471) is provided at one end of the support rod (470) located outside the box body (1); the vertical cross-section of the limit block (471) is larger than the area of ​​the through hole.

5. The continuous stone removal device for particulate materials according to claim 3, characterized in that: An end of the support rod (470) away from the frame (430) is connected to an elastic component, and the elastic component includes a column (472), a spring (473), a protrusion (474) and a slide groove (475); One end of the column (472) is connected to the side wall of the box (1), the protrusion (474) is arranged at the end of the support rod (470) and is located in the column (472), the slide groove (475) is opened in the column (472) along the length direction, the protrusion (474) is located in the slide groove (475) and is slidably connected to the slide groove (475), one end of the spring (473) is connected to the end of the support rod (470), and the other end of the spring (473) is connected to the side wall of the box (1).

6. The continuous stone removal device for particulate materials according to claim 3, characterized in that: Baffles (431) are detachably provided on both sides of the frame (430).

7. The device for continuous stone removal of particulate materials according to any one of claims 1 to 6, characterized in that: The blowing unit (5) comprises a blower (510), an air duct (520) and an air distribution plate (530); the blower (510) is arranged at the bottom of the box (1); the air outlet end of the blower (510) is connected to the air duct (520); and the air outlet end of the air duct (520) is connected to the air distribution plate (530).

8. The device for continuous stone removal of particulate materials according to any one of claims 1 to 6, characterized in that: The top of the box body (1) is connected to a negative pressure fan (6), and the outlet end of the negative pressure fan (6) is connected to a light debris collection tank (610) via a pipeline.

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