Grouting material screening device for goaf

Abstract

The invention relates to the technical field of coal mine raw material screening devices, and discloses a goaf grouting material screening device which comprises a device body, supporting legs used for supporting the device body and a fixing plate used for fixing the device body and further comprises a feeding port formed in the device body, and a driving part fixedly installed on the side face of the device body. The driving part penetrates through the side wall of the device body and is provided with a quantifying mechanism, the quantifying mechanism is provided with a material guide plate in the gravity inclination direction, a material throwing part is arranged at the end, away from the quantifying mechanism, of the material guide plate, and a material receiving part is fixedly installed on a top plate in the device body on the side, away from the material guide plate, of the material throwing part. According to the material throwing and winnowing device, the material throwing part is arranged, materials can be thrown up conveniently through work of the material throwing part, under the combined action of the material shapes and the winnowing effect, effective separation of the materials in different shapes is achieved, and the time of follow-up sorting operation is shortened.

Description

Technical Field

[0001] This invention relates to the field of coal mine raw material screening equipment technology, specifically a grouting material screening device for goaf areas. Background Technology

[0002] In mine goaf remediation projects, grouting technology is a crucial means of filling voids, stabilizing rock strata, and preventing surface subsidence. Untreated raw aggregates typically contain oversized particles, lumps, and excessively fine powder. Oversized particles easily clog grouting pipelines, valves, and boreholes, leading to construction interruptions and even equipment damage, seriously threatening project safety and efficiency. Excessive content of excessively fine powder reduces grout segregation, increases shrinkage, and may weaken the compressive strength and impermeability of the final consolidated body. Therefore, rigorous screening of grouting aggregates to remove oversized particles and control an appropriate particle size range is a necessary prerequisite for achieving efficient, stable, and safe grouting operations. Refined aggregate gradation not only ensures smooth construction but is also a vital foundation for improving the quality of the grouting project and ensuring long-term stability.

[0003] Existing screening devices can screen raw materials of different sizes. Raw materials that meet the requirements pass through the screen, while raw materials that do not meet the requirements fall through the screen holes. Based on this, different raw materials can be used in different production processes according to the needs.

[0004] However, in actual production, coal gangue, a byproduct of mining, is mostly used as backfill material for goaf areas. When the geology is clay minerals, coal gangue tends to form a flaky structure and is easily broken into thin flakes during mining. When the geology is hard minerals, coal gangue is mostly nodular or densely packed. However, coal mines often operate in mixed terrain, so the coal gangue used as backfill material is often in a mixed state. Before preparing the backfill material, it is necessary to separate coal gangue of different shapes to reduce the impact on the quality of the backfill material. Summary of the Invention

[0005] In view of this, a grouting material screening device for goaf areas is proposed to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grouting material screening device for goaf areas, comprising a device body, support legs for supporting the device body, and a fixing plate for fixing the device body, and further comprising:

[0007] A vibration mechanism is installed on the outer wall of the main body of the device. The movement of the vibration mechanism can drive the main body of the device to vibrate and feed materials.

[0008] The separation mechanism, located on the outer wall of the main body of the device, can separate raw materials of different shapes by connecting with an external air supply device;

[0009] The main body of the device is also provided with a feed inlet. A driving component is fixedly installed on the side of the main body of the device. A metering mechanism is provided through the driving component and penetrates the side wall of the main body of the device. A guide plate is provided along the gravity tilt direction of the metering mechanism. A throwing component is provided at the end of the guide plate away from the metering mechanism. A receiving component is fixedly installed on the inner top plate of the main body of the device on the side of the throwing component away from the guide plate. An air blowing head is fixedly installed on the inner bottom plate of the main body of the device at the position corresponding to the receiving component. A screen is provided near the discharge end of the main body of the device.

[0010] Preferably, the driving component is an explosion-proof motor, and the vibration mechanism is a vibration motor.

[0011] Preferably, the metering mechanism includes a rotating shaft, which is fixedly connected to the output end of an explosion-proof motor. Baffles are symmetrically installed on both sides of the rotating shaft along its axis, and at least two partitions are fixedly installed between the two baffles. A lever is fixedly installed on the baffle.

[0012] Preferably, the throwing component includes a connecting plate, and two connecting plates are provided. A plate body is fixedly installed between the two connecting plates. A rotating block is rotatably installed on the guide plate, and the rotating block is fixedly connected to the connecting plate.

[0013] Preferably, the receiving component includes a suction head and a receiving element for receiving the thrown sheet-like raw material, the suction head being connected to the separation mechanism.

[0014] Preferably, the receiving component includes an obliquely arranged receiving plate, and a storage block is fixedly installed on the side of the receiving plate near the direction of gravity, and a storage cavity is formed in the storage block.

[0015] Preferably, a ramp can be fixedly installed inside the storage cavity. When a ramp is provided inside the storage cavity, a discharge port is opened on the side wall of the storage cavity at the lower end of the ramp, and the discharge port is connected to the outside.

[0016] Preferably, the separation mechanism includes a gas cylinder with an annular pipe connected to it, and an air inlet pipe is also provided on the gas cylinder, with the annular pipe connected to an air blowing head.

[0017] Preferably, the gas cylinder includes an outer shell, a venturi tube is fixedly installed inside the outer shell, and a connecting tube is fixedly installed on the narrow section of the venturi tube, the connecting tube being in communication with the suction head.

[0018] Preferably, the guide plate is provided with a plurality of blocking strips, the cross-sectional shape of which is triangular.

[0019] Compared with the prior art, the present invention provides a grouting material screening device for goaf areas, which has the following beneficial effects:

[0020] 1. This invention utilizes the cooperation between the throwing component and the material. The throwing component facilitates the throwing of the material, and the combined effect of the material shape and air separation enables the effective separation of materials of different shapes, reducing the time required for subsequent sorting operations.

[0021] 2. Through the cooperation of the receiving component and the suction head, the sheet material is adsorbed near the suction head by the suction force of the suction head and the throwing component. The suction head periodically provides suction force. When no suction force is provided, the sheet material is received and collected by the receiving component, which can facilitate the further separation of materials of different shapes.

[0022] 3. By setting up an air blowing head, the present invention allows for a larger surface area and lighter weight of sheet materials compared to block materials. With the cooperation of the air blowing head and the throwing component, sheet materials are more easily thrown up and subsequently collected, resulting in better separation. Furthermore, when the air blowing head blows out hot air, it improves drying efficiency and reduces subsequent operation steps.

[0023] 4. By setting up blocking strips, the present invention has multiple blocking strips on the guide plate. On the one hand, the cross-section of the blocking strip is triangular, which makes it easier for block materials to turn over and allows the sheet materials pressed underneath to leak out, making them easier to separate during subsequent throwing. On the other hand, multiple blocking strips will slow down the falling speed of the material, which can make the drying effect of the guide plate better. Attached Figure Description

[0024] Figure 1 This is an overall structural diagram of the present invention;

[0025] Figure 2 This is an internal structural diagram of the main body of the device of the present invention;

[0026] Figure 3 This is a partial structural diagram of a guide plate according to the present invention;

[0027] Figure 4 This is an overall structural diagram of the quantitative mechanism of the present invention;

[0028] Figure 5 This is a diagram showing the internal structure of the gas cylinder of the present invention;

[0029] Figure 6 This is an overall structural diagram of the receiving component of the present invention;

[0030] Figure 7 This is a structural diagram of the ramp inside the storage block of the present invention;

[0031] Figure 8 This is a partial structural diagram of another guide plate according to the present invention.

[0032] In the picture:

[0033] 1. Main body of the device; 11. Feed inlet; 12. Drive component; 13. Metering mechanism; 131. Rotating shaft; 132. Baffle; 133. Partition plate; 134. Actuating rod; 14. Guide plate; 141. Rotating block; 142. Blocking bar; 15. Throwing component; 151. Connecting plate; 152. Plate body; 16. Air blowing head; 17. Receiving component; 171. Suction head; 172. Receiver; 1721. Receiver plate; 1722. Storage block; 1723. Storage cavity; 1724. Inclined ramp; 18. Screen;

[0034] 2. Support legs; 3. Fixing plate; 4. Vibration mechanism;

[0035] 5. Separation mechanism; 51. Gas cylinder; 511. Outer shell; 512. Venturi tube; 513. Connecting pipe; 52. Annular pipe; 53. Inlet pipe. Detailed Implementation

[0036] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.

[0037] like Figures 1 to 8 As shown, this embodiment of the invention provides a grouting material screening device for goaf areas, including a device body 1, support legs 2 for supporting the device body 1, and a fixing plate 3 for fixing the device body 1, and further including:

[0038] Vibration mechanism 4 is installed on the outer wall of the main body 1 of the device. The movement of vibration mechanism 4 can drive the main body 1 of the device to vibrate and feed materials.

[0039] Separation mechanism 5 is installed on the outer wall of the main body 1 of the device, and can separate raw materials of different shapes by connecting with an external air supply device;

[0040] The main body 1 of the device is also provided with a feed inlet 11. A drive component 12 is fixedly installed on the side of the main body 1. A metering mechanism 13 is provided through the drive component 12 through the side wall of the main body 1. A guide plate 14 is provided along the gravity tilt direction of the metering mechanism 13. A throwing component 15 is provided at the end of the guide plate 14 away from the metering mechanism 13. A receiving component 17 is fixedly installed on the inner top plate of the main body 1 on the side of the throwing component 15 away from the guide plate 14. An air blowing head 16 is fixedly installed on the inner bottom plate of the main body 1 at the position corresponding to the receiving component 17. A screen 18 is provided near the discharge end of the main body 1.

[0041] The working principle and beneficial effects of the above technical solution are as follows: Mixed raw materials are added into the main body 1 of the device through the feed inlet 11. The mixed raw materials fall into the metering mechanism 13. After the metering mechanism 13 is partially filled, the drive component 12 is activated. The drive component 12 drives the metering mechanism 13 to rotate, and guides the metered raw materials onto the guide plate 14. The vibration mechanism 4 is activated. Under the action of the vibration mechanism 4 and gravity, the material will slide down the guide plate 14. When the material slides down to the throwing component 15, the throwing component 15 will rotate and throw the material up. When the material is thrown into the air, under the combined action of the material shape and the air blowing head 16, the block material will separate from the sheet material. Then the receiving component 17 will catch the sheet material. The block material will fall to the screen 18 under the action of gravity. The screen 18 will screen out block materials of different sizes. At the same time, when the block material falls onto the screen 18, the impact will clear some of the blocked screen holes.

[0042] In one embodiment: the drive component 12 is configured as an explosion-proof motor, and the vibration mechanism 4 is configured as a vibration motor.

[0043] The working principle and beneficial effects of the above technical solution are as follows: depending on the usage environment of this device, the specific model and size of the drive component 12 and the vibration mechanism 4 can be selected independently. For example, when used in a coal mine, both the drive component 12 and the vibration mechanism 4 need to be selected as explosion-proof motors.

[0044] In one embodiment: the metering mechanism 13 includes a rotating shaft 131, which is fixedly connected to the output end of an explosion-proof motor. Baffles 132 are fixedly and symmetrically installed on both sides of the rotating shaft 131 in the axial direction. At least two partitions 133 are fixedly installed between the two baffles 132. A lever 134 is fixedly installed on the baffles 132.

[0045] The working principle and beneficial effects of the above technical solution are as follows: When raw materials are added through the feed inlet 11, the raw materials will enter the metering mechanism 13. Several partitions 133 divide the baffle 132 into multiple areas of the same volume. Filling each area can achieve metering operation. At the same time, driven by the explosion-proof motor, the metering mechanism 13 will rotate, pouring the material in each area sequentially. When the metering mechanism 13 rotates, it will drive the actuating rod 134 to rotate. The actuating rod 134 and the connecting plate 151 on the throwing component 15 cooperate to periodically drive the throwing component 15 to perform throwing operation. When it is necessary to adjust the throwing cycle, the number of rods on the actuating rod 134 can be increased or decreased as appropriate.

[0046] In one embodiment, the material throwing component 15 includes a connecting plate 151, and two connecting plates 151 are provided. A plate body 152 is fixedly installed between the two connecting plates 151. A rotating block 141 is rotatably installed on the guide plate 14, and the rotating block 141 is fixedly connected to the connecting plate 151.

[0047] The working principle and beneficial effects of the above technical solution are as follows: When the connecting plate 151 is pressed by the actuating rod 134, the connecting plate 151 will rotate around the axis of the rotating block 141. At this time, the end of the plate body 152 will rotate upward, which can throw the material on the plate body 152 up. According to the feeding speed of the material, it can be thrown up when the material reaches the plate body 152. In addition to the structure shown in the attached figure, the plate body 152 can also be fixedly installed with a baffle plate on the side away from the guide plate 14, which can prevent some material from entering the screen 18 section directly without being thrown up. The part of the rotating block 141 located inside the guide plate 14 is equipped with a return spring, which will reset after the external force is removed.

[0048] In one embodiment, the receiving component 17 includes a suction head 171 and a receiving component 172 for receiving the thrown sheet-like raw material, the suction head 171 being connected to the separation mechanism 5.

[0049] The working principle and beneficial effects of the above technical solution are as follows: external gas is introduced into the separation mechanism 5. When the gas flows, it provides suction to the suction head 171, which can suck up the sheet material.

[0050] In one embodiment: the receiving member 172 includes an obliquely arranged receiving plate 1721, and a storage block 1722 is fixedly installed on the side of the receiving plate 1721 near the direction of gravity, and a storage cavity 1723 is opened in the storage block 1722.

[0051] The working principle and beneficial effects of the above technical solution are as follows: Since the gas at the suction head 171 is supplied periodically, when the gas is not supplied, the suction will disappear. At this time, the sheet material that has been sucked up will fall onto the receiving plate 1721 under the action of gravity, and will slide down along the receiving plate 1721 under the action of gravity and enter the storage cavity 1723 of the storage block 1722.

[0052] In one embodiment, a ramp 1724 may also be fixedly installed inside the storage cavity 1723. When the ramp 1724 is provided inside the storage cavity 1723, a discharge port is provided on the side wall of the storage cavity 1723 at the lower end of the ramp 1724, and the discharge port is connected to the outside.

[0053] The working principle and beneficial effects of the above technical solution are as follows: the material entering the receiving cavity 1723 will slide down the slope 1724 and then enter the outside of the main body 1 of the device through the discharge port. A collection box is set below the discharge port to conveniently collect the sheet material.

[0054] In one embodiment: the separation mechanism 5 includes a gas cylinder 51, an annular pipe 52 is connected to the gas cylinder 51, and an air inlet pipe 53 is also provided on the gas cylinder 51. The annular pipe 52 is connected to the air blowing head 16.

[0055] The working principle and beneficial effects of the above technical solution are as follows: by connecting the air inlet pipe 53 to an external air source and introducing high-velocity gas into the annular pipe 52, the separation function can be achieved.

[0056] In one embodiment: the gas cylinder 51 includes a housing 511, a venturi tube 512 is fixedly installed inside the housing 511, and a connecting tube 513 is fixedly installed on the narrow section of the venturi tube 512, the connecting tube 513 being connected to the suction head 171.

[0057] The working principle and beneficial effects of the above technical solution are as follows: When the high-velocity gas passes through the Venturi tube 512, the pressure in the narrow section will decrease according to Bernoulli's principle. At this time, the gas will be sucked in through the connecting pipe 513, which can hold the sheet material. At the same time, heated gas can be introduced into the Venturi tube 512, so that the gas blown out by the air blowing head 16 is hot gas, which enhances the drying effect.

[0058] In one embodiment, the guide plate 14 is provided with a plurality of blocking strips 142, the cross-sectional shape of the blocking strips 142 being triangular.

[0059] The working principle and beneficial effects of the above technical solution are as follows: When using this type of guide plate 14, a heating plate is provided inside the guide plate 14. On the one hand, the cross-section of the blocking strip 142 is triangular, which makes it easier for the block material to turn over, allowing the sheet material pressed underneath to leak out and be more easily separated during subsequent throwing. At the same time, after the block material is turned over, the heating plate can heat and dry the other side of the block material. On the other hand, multiple blocking strips 142 will slow down the falling speed of the material, which can make the drying effect of the heating plate better.

[0060] Working principle and usage process: First, the mixed raw materials are added into the main body 1 of the device through the feed port 11. The mixed raw materials fall into the metering mechanism 13. Several partitions 133 divide the baffle 132 into multiple areas of the same volume. The metering operation can be achieved by filling each area.

[0061] Meanwhile, driven by the explosion-proof motor, the metering mechanism 13 will rotate, pouring the material in each area sequentially. When the metering mechanism 13 rotates, it will drive the actuating rod 134 to rotate. The actuating rod 134 and the connecting plate 151 on the throwing component 15 cooperate to periodically drive the throwing component 15 to perform the throwing operation. When it is necessary to adjust the throwing cycle, the number of rods on the actuating rod 134 can be increased or decreased as appropriate.

[0062] Then, a fixed amount of raw material is introduced onto the guide plate 14, and the vibration mechanism 4 is started. Under the action of the vibration mechanism 4 and gravity, the material will slide down the guide plate 14. When the connecting plate 151 is squeezed by the actuating rod 134, the connecting plate 151 will rotate around the axis of the rotating block 141. At this time, the plate body 152 will rotate upward, which can throw the material on the plate body 152 up. According to the feeding speed of the material, it can be thrown up when the material reaches the plate body 152. In addition to the structure shown in the attached figure, the plate body 152 can also be fixedly installed with a baffle plate on the side away from the guide plate 14 to prevent some material from entering the screen 18 section directly without being thrown up. The part of the rotating block 141 located inside the guide plate 14 is equipped with a return spring, which will reset after the external force is removed and throw the material up.

[0063] After the material is thrown into the air, the air inlet pipe 53 connects to an external air source, introducing high-velocity gas into the annular pipe 52. When the high-velocity gas passes through the narrow section of the Venturi tube 512, according to Bernoulli's principle, the pressure in the narrow section decreases, causing air to be drawn in through the connecting pipe 513, thus holding the sheet-like material. Simultaneously, heated gas can be introduced into the Venturi tube 512, ensuring that the gas blown out by the air nozzle 16 is hot gas, enhancing the drying effect. Under the combined action of the material's shape and the air nozzle 16, the lumpy material separates from the sheet-like material. Since the gas at the suction head 171 is... The gas supply is periodic. When the gas supply is not available, the suction will disappear. At this time, the sucked-up sheet material will fall onto the receiving plate 1721 under the action of gravity. Under the action of gravity, it will slide down the receiving plate 1721 and enter the receiving cavity 1723 of the receiving block 1722. The material entering the receiving cavity 1723 will slide down the slope 1724 and then enter the outside of the device body 1 through the discharge port. A collection box is set below the discharge port to conveniently collect the sheet material. The block material will fall onto the screen 18 under the action of gravity. The screen 18 will screen out block materials of different sizes.

[0064] Meanwhile, when the lumpy material falls onto the screen 18, the impact will clear some of the blocked screen holes. When using this type of guide plate 14, a heating plate is provided inside the guide plate 14. On the one hand, the cross-section of the blocking strip 142 is triangular, which makes it easier for the lumpy material to turn over, allowing the sheet material pressed underneath to leak out and be more easily separated during subsequent throwing. At the same time, after the lumpy material turns over, the heating plate can heat and dry the other side of the lumpy material. On the other hand, multiple blocking strips 142 will slow down the falling speed of the material, which can make the drying effect of the heating plate better. Depending on the usage environment of this device, the specific model and size of the drive component 12 and the vibration mechanism 4 can be selected. For example, when used in a coal mine, both the drive component 12 and the vibration mechanism 4 need to be selected as explosion-proof motors.

[0065] The embodiments of the present invention have been described above. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A grouting material screening device for goaf areas, comprising a main body (1), legs (2) for supporting the main body (1), and a fixing plate (3) for fixing the main body (1), characterized in that, Also includes: The vibration mechanism (4) is installed on the outer wall of the main body (1) of the device. The movement of the vibration mechanism (4) can drive the main body (1) of the device to vibrate and feed materials. The separation mechanism (5) is installed on the outer wall of the main body (1) of the device, and can separate raw materials of different shapes by connecting with an external gas supply device; The device body (1) is also provided with a feed inlet (11). A drive component (12) is fixedly installed on the side of the device body (1). A metering mechanism (13) is provided through the drive component (12) through the side wall of the device body (1). A guide plate (14) is provided along the gravity tilt direction of the metering mechanism (13). A throwing component (15) is provided at the end of the guide plate (14) away from the metering mechanism (13). A receiving component (17) is fixedly installed on the inner top plate of the device body (1) on the side of the throwing component (15) away from the guide plate (14). An air blowing head (16) is fixedly installed on the inner bottom plate of the device body (1) at the position corresponding to the receiving component (17). A screen (18) is provided near the discharge end of the device body (1).

2. The grouting material screening device for goaf areas according to claim 1, characterized in that: The driving component (12) is configured as an explosion-proof motor, and the vibration mechanism (4) is configured as a vibration motor.

3. A grouting material screening device for goaf areas according to claim 2, characterized in that: The quantitative mechanism (13) includes a rotating shaft (131), which is fixedly connected to the output end of the explosion-proof motor. Baffles (132) are fixedly and symmetrically installed on both sides of the rotating shaft (131) in the axial direction. At least two partitions (133) are fixedly installed between the two baffles (132). A lever (134) is fixedly installed on the baffle (132).

4. A grouting material screening device for goaf areas according to claim 3, characterized in that: The throwing component (15) includes a connecting plate (151), two connecting plates (151) are provided, and a plate body (152) is fixedly installed between the two connecting plates (151). A rotating block (141) is rotatably installed on the guide plate (14), and the rotating block (141) is fixedly connected to the connecting plate (151).

5. A grouting material screening device for goaf areas according to claim 4, characterized in that: The receiving component (17) includes a suction head (171) and a receiving component (172) for receiving the thrown sheet material, the suction head (171) being connected to the separation mechanism (5).

6. A grouting material screening device for goaf areas according to claim 5, characterized in that: The receiving component (172) includes an obliquely arranged receiving plate (1721), and a storage block (1722) is fixedly installed on the side of the receiving plate (1721) near the direction of gravity. A storage cavity (1723) is opened in the storage block (1722).

7. A grouting material screening device for goaf areas according to claim 6, characterized in that: A ramp (1724) can also be fixedly installed inside the storage cavity (1723). When the ramp (1724) is provided inside the storage cavity (1723), a discharge port is opened on the side wall of the storage cavity (1723) at the lower end of the ramp (1724), and the discharge port is connected to the outside.

8. A grouting material screening device for goaf areas according to claim 7, characterized in that: The separation mechanism (5) includes a gas cylinder (51), an annular pipe (52) is connected to the gas cylinder (51), and an air inlet pipe (53) is also provided on the gas cylinder (51). The annular pipe (52) is connected to the air blowing head (16).

9. A grouting material screening device for goaf areas according to claim 8, characterized in that: The gas cylinder (51) includes an outer shell (511), a venturi tube (512) is fixedly installed inside the outer shell (511), and a connecting tube (513) is fixedly installed on the narrow section of the venturi tube (512), the connecting tube (513) being connected to the suction head (171).

10. A grouting material screening device for goaf areas according to claim 1, characterized in that: The guide plate (14) is provided with a plurality of blocking strips (142), and the cross-sectional shape of the blocking strips (142) is triangular.

Images