Residue soil screening device

Abstract

The utility model discloses a muck screening device, relates to the technical field of screening, and aims to solve the technical problems that in the prior art, a muck screening device cannot adaptively change screening levels according to changes of stratum soil texture, and the screening effect is reduced. The screening device comprises a box body, a screening device is arranged in the box body, the screening device comprises a plurality of screens arranged in the height direction of the box body, the screens are detachably connected with the box body through a connecting device, and the connecting device comprises a connecting part used for connecting the box body and the screens and a fixing part used for fixing the screens. The screens can rotate in the box body through the connecting parts and the fixing parts, and the apertures of screen holes of the screens are gradually reduced from top to bottom. The box body, the detachable screens, the connecting parts, the fixing parts and the like are adopted, the number of the screens can be increased according to the soil quality of screened muck, the screening effect is improved, and the screening speed is increased; the screen can rotate at a certain angle in the box body, and the muck screening effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening, and particularly relates to a muck screening device. Background Art

[0002] At present, with the continuous expansion of the scale of urban subway projects, a large amount of muck generated by shield tunneling has become a huge resource. The main components of muck are solid stones and soil. At present, the main methods for treating the excavated muck in China are landfill and stacking. Most of the excavated muck is used for tunnel backfilling, and the remaining part is used for building urban green belts and recycling some components of the muck in the field of building materials. For example, some enterprises will screen out the stones in the muck, break the screened stones and incorporate them into cement for use as concrete materials. However, when most of the muck is treated by landfill, on the one hand, the landfill muck has different soil components from the landfill site, or there may be garbage or other pollutants in the muck, and direct landfill may cause environmental pollution. On the other hand, because there are still some components in the muck that can be recycled, but the direct landfill of the muck makes these components not effectively utilized and will also cause waste of resources.

[0003] Therefore, in order to prevent the muck from polluting the surrounding environment during landfill or wasting resources due to the ineffective utilization of the recyclable components in the muck, before the muck is landfilled, the generated engineering muck needs to be subjected to environmental protection treatments such as separation and dehydration.

[0004] When screening the muck, in order to fully screen the muck, currently, multi-layer sieves with different sieve hole diameters are generally used. These sieves are arranged in the order of decreasing aperture, so that when the muck passes through these sieves in turn, the muck is screened layer by layer to improve the screening effect. However, when drilling tunnels underground, due to different geological soil conditions, the components of the obtained muck are also different. For example, some muck contains more stones, while some muck contains more soil. If only a fixed number of sieves are used to screen the muck from different strata. Due to the change in the particle size of the components in the muck and the unchanged screening levels of the sieves, the final screening effect will be affected. Without improving the screening degree according to the particle size in the muck, the most effective utilization of the muck with different particle sizes after screening cannot be achieved. Content of the Utility Model

[0005] The utility model discloses a muck screening device, aiming to solve the technical problem in the above-mentioned existing technology that the muck screening device cannot adaptively change the screening levels according to the change of the geological soil conditions, resulting in a reduced screening effect.

[0006] In order to solve the above existing technical problems, the technical solution adopted by the utility model is as follows:

[0007] A muck screening device, comprising a box body, wherein a screening device is arranged in the box body. The screening device includes several screen meshes arranged along the height direction of the box body. The screen meshes are detachably connected to the box body through a connecting device. The connecting device includes a connecting part for connecting the box body and the screen mesh and a fixing part for fixing the screen mesh. When the screen mesh is connected to the box body, the screen mesh can rotate in the box body through the connecting part and the fixing part. The aperture diameters of the screen holes of the several screen meshes gradually decrease from top to bottom.

[0008] After adopting this technical solution, when the soil mass composition of the formation where a tunnel needs to be drilled is relatively complex and the particle size difference of the substances in the muck formed after drilling this formation is relatively large, in order to better screen the muck and classify and utilize the substances with different particle sizes after screening. The screen meshes with aperture sizes corresponding to the particle sizes of each substance can be correspondingly connected to the box body according to the size of different substance particle sizes. For example, when drilling a formation with relatively loose soil, the muck generated by drilling mainly contains gravel and soil. The gravel has a small size, a small number, and a relatively uniform size. Three - level screen meshes can be set to screen larger stone blocks and mud blocks; smaller stone blocks, mud blocks, and sediment. The larger stone blocks and mud blocks can be used for applications such as base landfill and brick making. The smaller stone blocks and mud blocks can be used for crushing and making concrete, and the sediment can be used to make slurry for backfilling. In this way, the different substances obtained after three - level screening are classified and fully utilized, improving the utilization effect of the muck and creating better economic benefits.

[0009] Therefore, according to the different compositions and particle sizes of each component of the muck, and making adaptive adjustments to the screening device, while improving the screening effect, classifying and utilizing these screened substances can increase the economic value of the muck.

[0010] The screen mesh can rotate in the box body through the connecting part and the fixing part. When the screen mesh starts to screen the muck, due to the existence of the self - gravity of the muck, when it contacts the screen mesh, it can cause the screen mesh to rotate to a certain extent in the box body. Subsequently, under the action of the connecting part and the fixing part, it rotates regularly in the box body, causing the muck to tilt back and forth on each level of the screen mesh to screen the muck. At the same time, the continuous rotation of the screen mesh causes substances to be screened, such as stones, to impact the screen mesh, causing the screen mesh to vibrate to a certain extent. The soil in the screen holes can be shaken out of the screen mesh through this vibration, preventing the screen mesh from being blocked, and thus ensuring the screening effect of the muck and the stability of the device during use.

[0011] Wherein, several installation grooves penetrating the side wall of the box body are arranged on the box body. A connecting shaft is arranged in each installation groove. A snap ring cooperating with the connecting shaft is arranged on the screen mesh. A first cover plate cooperating with the installation groove is arranged on the box body.

[0012] After adopting this technical solution, through the snap ring and the connecting shaft, the screen can be quickly connected to the box body, and then the other end of the screen is fixed on the box body through the fixing part. Since the connection method of the snap ring and the connecting shaft is simple, the connection speed between the box body and the screen is improved, so that this connection method improves the speed of adjusting the screen of the device according to different strata, and achieves the purpose of improving the screening rate by using this device.

[0013] Wherein, the fixing part includes a sliding plate slidably connected to the box body, and several fixing grooves respectively cooperating with the screen are arranged on the sliding plate.

[0014] After adopting this technical solution, fixing grooves cooperating with the screen are arranged on the sliding plate, that is, one end of the screen is initially fixed on the box body in cooperation with the connecting shaft, and the other end of the screen is connected to the sliding plate by directly inserting it into the fixing groove, and then connected to the box body. Both ends of the screen are connected to the box body, making the connection of the screen on the box body relatively stable and improving the stability of the device during use.

[0015] The setting of the sliding plate enables the sliding plate to drive the screen connected to the sliding plate to rotate to a certain extent around the connecting shaft when sliding on the box body. During the process of the rotation and inclination of the screen, the muck on the screen constantly moves back and forth on the screen, and this reciprocating movement improves the screening effect on the muck.

[0016] Wherein, a vibration device is slidably arranged in the fixing groove. The vibration device includes a vibration ring slidably connected to the fixing groove, a connecting groove cooperating with the screen is arranged on the vibration ring, and two vibration plates cooperating with the vibration ring are arranged in the fixing groove. The two vibration plates are respectively arranged on both sides of the vibration ring.

[0017] After adopting this technical solution, the setting of the vibration device changes the sliding of the sliding plate on the box body into the sliding of the vibration ring in the fixing groove. The connecting groove on the vibration ring is connected to the screen, and the screen is driven by this sliding movement to rotate to a certain extent around the connecting shaft itself, improving the screening effect of the muck. At this time, vibration plates cooperating with the vibration ring are also arranged in the fixing groove. When the vibration ring moves towards one of the vibration plates under the dual action of the sliding plate and the screen, the vibration ring will collide with the vibration plate, resulting in the screen shaking. Under the influence of this shaking effect, the muck will be further screened more thoroughly, improving the screening effect on the muck. At the same time, hard blocks in the muck, such as stones, will also collide with the screen, generating another shaking effect centered on the impact center. This shaking effect has a better effect on removing the muck in the screen holes of the screen, can prevent the screen from being blocked, and thus improves the stability of the device during use.

[0018] Wherein, buffer devices are respectively arranged on both sides of the vibration ring close to the two vibration plates.

[0019] After adopting this technical solution, the buffer devices can provide buffering when the vibration ring impacts and contacts with any one of the vibration plates to make the screen vibrate, protect the vibration plates and the vibration ring, effectively extend the service life of the vibration ring and the vibration plates, reduce the cost of this device during use, and improve economic benefits.

[0020] Wherein, two baffles are rotatably connected outside the fixing groove, a gap is arranged between the two baffles, and the shape and size of the gap match those of the screen.

[0021] After adopting this technical solution, the two baffles can protect the fixing groove during the rotation and shaking of the screen in the box body, preventing the muck from entering the fixing groove and affecting the use of the vibration ring. Therefore, the arrangement of the baffles ensures the smoothness and use effect of this device during use.

[0022] Wherein, a spraying part is arranged in the box body, and the spraying part includes several spraying pipes respectively arranged above each layer of the screen.

[0023] After adopting this technical solution, through the spraying pipes, the stones and mud blocks remaining on the screen can be cleaned, the mud blocks can be melted, preventing the mud blocks from caking, further improving the separation effect between the mud blocks and the stones, and the generated slurry is collected through the feeding cylinder. The slurry can be directly used for filling the base after simple treatment, etc., which not only improves the separation effect between the mud blocks and the stones, but also improves the economic benefits of the muck.

[0024] Wherein, a feeding hopper is connected to the top of the box body, the screen is arranged below the feeding hopper, and a feeding cylinder is arranged below the box body.

[0025] After adopting this technical solution, the position of the feeding hopper and the position of the screening device are reasonably designed, reducing the moving line position of the muck transportation, so as to achieve the effect of improving the muck transportation efficiency.

[0026] To sum up, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0027] (1) By adopting a box body, a detachable screen, etc., the number of screens can be increased according to the soil quality of the muck to be screened, improving the screening effect and rate. By adopting a connecting part, a fixing part, etc., the screen can rotate at a certain angle in the box body, further improving the screening effect of the muck.

[0028] (2) By adopting a connecting shaft, a snap ring, etc., it is convenient to quickly install the screen.

[0029] (3) By using a vibration device or the like, it is convenient to limit the position of the screen mesh, and it can also facilitate the screen mesh to generate a certain degree of vibration under the action of a sliding plate or the like, improving the screening effect.

[0030] (4) By using a spraying part or the like, through a spray pipe, the stones and mud blocks remaining on the screen mesh can be cleaned, the mud blocks can be melted, preventing the mud blocks from caking, further improving the separation effect between the mud blocks and the stones. The generated mud slurry is collected through a feeding cylinder, and the mud slurry can be directly used for filling the base or the like after simple treatment, which not only improves the separation effect between the mud blocks and the stones, but also improves the economic benefits of the muck. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present utility model will be described by way of examples with reference to the accompanying drawings, wherein:

[0032] Figure 1 is a front view structural schematic diagram of a muck screening device of the present utility model;

[0033] Figure 2 is a side view structural schematic diagram of a muck screening device of the present utility model;

[0034] Figure 3 is Figure 2 an enlarged structural schematic diagram of part A in

[0035] Figure 4 a positional structural schematic diagram between the vibration device and the fixing groove;

[0036] Figure 5 a connection relationship schematic diagram of the screen mesh and the connecting shaft;

[0037] Figure 6 is a top view structural schematic diagram of the screen mesh.

[0038] REFERENCE NUMERALS

[0039] 1 - feeding cylinder, 2 - box body, 201 - buckle, 202 - installation groove, 203 - first cover plate, 3 - connecting shaft, 4 - feeding hopper, 5 - electro-hydraulic rod, 6 - sliding plate, 601 - fixing groove, 602 - baffle, 7 - vibration ring, 701 - connecting groove, 8 - vibration plate, 9 - spring, 10 - screen mesh, 11 - spray pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the embodiments of this application and the accompanying drawings. Apparently, the described embodiments are only a part rather than all of the embodiments of this application. Usually, the components of the embodiments of this application described and marked in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents the selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative efforts fall within the scope of protection of this application.

[0041] In the description of the embodiments of this application, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships in which the utility model product is usually placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0042] The following will be combined with Figures 1-6 to make a detailed description of the present utility model.

[0043] Embodiment 1

[0044] A muck screening device, as Figures 1-6 shown, includes a box body 2. A screening device is arranged inside the box body 2. The screening device includes several screen meshes 10 arranged along the height direction of the box body 2. The screen meshes 10 are detachably connected to the box body 2 through a connecting device. The connecting device includes a connecting part for connecting the box body 2 and the screen meshes 10 and a fixing part for fixing the screen meshes 10. When the screen meshes 10 are connected to the box body 2, the screen meshes 10 can rotate inside the box body 2 through the connecting part and the fixing part. The aperture diameters of the screen holes of the several screen meshes 10 gradually decrease from top to bottom.

[0045] In this embodiment, both the box body 2 and the screen meshes 10 are made of stainless steel. The stainless steel material is corrosion-resistant and rust-resistant, has relatively high stiffness and hardness, can withstand the impact of muck, is relatively stable and durable during use, and can effectively save costs.

[0046] In this embodiment, the fixing part is arranged on the box body 2.

[0047] In this embodiment, the thickness of the screen mesh 10 is 10 mm.

[0048] In this embodiment, the box body 2 adopts a rectangular structure.

[0049] In this embodiment, the size and shape of the screen 10 match those of the box body 2. Specifically, when the screen 10 enters the box body 2, it can completely cover the cavity in the box body 2.

[0050] When the soil composition of the formation where the tunnel needs to be drilled is relatively complex and the particle size of the materials in the muck formed after drilling in this formation varies greatly, in order to better screen the muck and classify and utilize the materials with different particle sizes after screening. According to the size of different materials, screens 10 with corresponding aperture sizes corresponding to the aperture sizes of each material particle size can be correspondingly connected to the box body 2. For example, when drilling a formation with relatively loose soil, the muck generated by drilling mainly contains crushed stones and soil. The size of the crushed stones is small, the number is small, and the size is relatively uniform. Three - level screens 10 can be set to screen larger stone blocks and mud blocks; smaller stone blocks, mud blocks, and sediment. The larger stone blocks and mud blocks can be used for applications such as base landfill and brick making. The smaller stone blocks and mud blocks can be used for crushing and making concrete, and the sediment can be used to make slurry for backfilling. In this way, the different materials obtained after three - level screening are classified and fully utilized, improving the utilization effect of the muck and creating better economic benefits.

[0051] Therefore, according to the composition of the muck and the differences in the particle sizes of each component, by making adaptive adjustments to the screening device, while improving the screening effect, classifying and utilizing these screened materials can increase the economic value of the muck.

[0052] The screen 10 can rotate in the box body 2 through the connecting part and the fixing part. When the screen 10 starts to screen the muck, due to the existence of the self - gravity of the muck, when it contacts the screen 10, it can cause the screen 10 to rotate to a certain extent in the box body 2. Subsequently, under the action of the connecting part and the fixing part, it rotates regularly in the box body 2, causing the muck to tilt back and forth on each level of the screen 10 to screen the muck. At the same time, the continuous rotation of the screen 10 causes materials such as stones to be screened to impact the screen 10, causing the screen 10 to vibrate to a certain extent. The soil in the screen holes can be shaken out of the screen 10 through this vibration, preventing the screen 10 from being blocked, and thus ensuring the screening effect of the muck and the stability of the device during use.

[0053] In this embodiment, several installation grooves 202 penetrating the side wall of the box body 2 are provided on the box body 2. A connecting shaft 3 is arranged in each installation groove 202. A snap ring matching with the connecting shaft 3 is arranged on the screen 10, and a first cover plate 203 matching with the installation groove 202 is arranged on the box body 2.

[0054] In this embodiment, as Figure 1As shown, there are 6 installation grooves 202, and the 6 installation grooves 202 are integrally formed with the box body 2.

[0055] In this embodiment, the other end of the first cover plate 203 and the box body 2 are connected by an opening and closing structure, and the opening and closing structure is a buckle 201. The buckle 201 is a prior art, and the buckle 201 has the same structure as the safe buckle.

[0056] In this embodiment, the gap between the top of the installation groove 202 and the top of the screen 10 is 5 cm. After screening the muck, the connection between the first cover plate 203 and the box body 2 can be disconnected by opening the buckle 201, and the gap is exposed. The screened particles of this particle size on each layer of the screen 10 can enter the corresponding collection device through this gap and then be effectively utilized.

[0057] In this embodiment, the connecting shaft 3 and the box body 2 are fixed by welding. The welding connection method is relatively stable and can improve the stability of the device during use.

[0058] In this embodiment, the first cover plate 203 is hinged to the box body 2 through a hinge, as Figure 1 shown. The connection method of the hinge is a prior art and will not be described in detail here. The existence of the first cover plate 203 can also protect the muck on the screen 10 when the screen 10 rotates and tilts in the box body 2, preventing the muck from falling from the installation groove 202 to the outside of the box body 2, resulting in the unscreened muck in this part and affecting the screening effect of the muck.

[0059] In this embodiment, the circumference of the snap ring is 2 / 3 of the cross-sectional circumference of the connecting shaft 3, and the snap ring is also made of stainless steel. There is a notch with a length of 1 / 3 of the circumference of the snap ring on the snap ring, which is convenient for connecting with the connecting shaft 3. The screen 10 is snap-fitted and installed in the box body 2 through this notch, and the remaining 2 / 3 circumference can cover the connecting shaft 3, making the connection between the screen 10 and the connecting shaft 3 more stable and increasing the stability of the screen 10 during use.

[0060] Through the snap ring and the connecting shaft 3, the screen 10 can be quickly connected to the box body 2, and then the other end of the screen 10 is fixed to the box body 2 through the fixing part. Because the connection method of the snap ring and the connecting shaft 3 is simple, the connection speed between the box body 2 and the screen 10 is improved, so that this connection method improves the speed of adjusting the screen 10 according to different strata of the device, achieving the purpose of improving the screening rate by using this device.

[0061] In this embodiment, the fixing part includes a sliding plate 6 slidably connected to the box body 2, as Figure 2 and Figure 3 shown. A plurality of fixing grooves 601 respectively cooperating with the screen 10 are provided on the sliding plate 6.

[0062] In this embodiment, there are 6 fixing grooves 601, and the positions of the fixing grooves 601 correspond one by one to the horizontal positions after the screen 10 is connected to the connecting shaft 3.

[0063] In this embodiment, the width of the fixing groove 601 is greater than the thickness of the screen 10 by 5 mm, so that the screen 10 can rotate to a certain extent in the fixing groove 601.

[0064] In this embodiment, the rotation angle of the screen 10 is 30°.

[0065] In this embodiment, a fixing protrusion is provided at one end of the screen 10 in contact with the fixing groove 601. As Figure 6 shown, a fixing groove matching the fixing protrusion is provided in the fixing groove 601. The setting of the fixing protrusion and the fixing groove makes the connection between the fixing groove 601 and the screen 10 more stable.

[0066] In this embodiment, the sliding plate 6 is slidably connected to the side wall of the box body 2. The sliding plate 6 is arranged opposite to the installation groove 202. A sliding groove is provided on the side wall of the box body 2 close to the sliding plate 6, and a slider matching the sliding groove is provided on the sliding plate 6. A driving component matching the sliding plate 6 is provided on the box body 2. The driving component is an electric hydraulic rod 5, and the electric hydraulic rod 5 can be controlled by a controller to pull the sliding plate 6 to move up and down evenly. In this embodiment, the movement mode of the electric hydraulic rod 5 and the control of the electric control hydraulic rod by the controller are both prior arts and will not be described in detail here. Except for this embodiment, all other methods that can drive the sliding plate 6 to move up and down evenly in the box body 2 are within the scope covered by this application and will not be exemplified one by one here.

[0067] In this embodiment, the maximum distances that the electric hydraulic rod 5 can drive the sliding plate 6 to move up and down are both 10 cm.

[0068] In this embodiment, the length of the sliding plate 6 is less than the height of the side wall of the box body 2 by 20 cm.

[0069] A fixing groove 601 matching the screen 10 is provided on the sliding plate 6. That is, one end of the screen 10 is cooperatively fixed to the box body 2 through cooperation with the connecting shaft 3, and the other end of the screen 10 is connected to the sliding plate 6 by directly inserting into the fixing groove 601, and then connected to the box body 2. Both ends of the screen 10 are connected to the box body 2, so that the connection of the screen 10 on the box body 2 is relatively stable, and the stability of the device during use is improved.

[0070] The sliding plate 6 is arranged such that when the sliding plate 6 slides on the box body 2, it can drive the screen 10 connected to the sliding plate 6 to rotate to a certain extent around the connecting shaft 3. The muck on the screen 10 continuously moves back and forth on the screen 10 during the rotation and inclination process of the screen 10. This reciprocating motion improves the screening effect of the muck.

[0071] In this embodiment, a feed hopper 4 is connected to the top of the box body 2. The screen 10 is arranged below the feed hopper 4, and a material conveying cylinder 1 is arranged below the box body 2.

[0072] In this embodiment, the feed hopper 4 is connected to the top of the box body 2 by welding. Specifically, it can be welded to the top wall of the box body 2, and the feed hopper 4 is of a conical structure and does not interfere with the movement of the electro-hydraulic rod 5.

[0073] In this embodiment, the material conveying cylinder 1 is a conical barrel with a material conveying pipe arranged below. The screened fine-grained muck can directly enter the collection device through the conical barrel and the material conveying pipe, which is convenient for subsequent utilization of the screened fine-grained muck. When the sliding plate 6 slides towards the feed hopper 4, the conical barrel can directly protect the muck and prevent the muck from leaking out through the gap between the sliding plate 6 and the conical barrel.

[0074] The position of the feed hopper 4 and the position of the screening device are reasonably designed to reduce the moving line position of the muck conveying, thereby achieving the effect of improving the muck conveying efficiency.

[0075] The specific usage method of the present utility model is as follows:

[0076] Refer to Figures 1-6 , when this device is used, first judge according to the formation soil quality of the tunnel to be drilled, judge the particle size range of the muck that may be generated after the formation is drilled, and confirm the screening levels and the utilization directions of the substances in each level after screening according to this particle size range. Then take out the screen 10 with the corresponding aperture according to this judgment and install these screens 10 in appropriate positions. It is also possible to set the screening levels suitable for basic screening on the box body 2, and only need to correspondingly increase the screen 10 according to the change of the formation subsequently (for example, install three levels of different screens 10 on the first, third, and sixth connecting shafts 3 from top to bottom of the box body 2 to screen the muck formed by drilling the flexible formation. As long as the complexity of the formation is stronger than the flexible formation, appropriate screens 10 can be installed on the second, fourth, and fifth connecting shafts 3 as arranged).

[0077] Specifically, first open the first cover plate 203 to expose the installation groove 202 and the connecting shaft 3 on the box body 2. Then, through the gap between the connecting shaft 3 and the installation groove 202, insert the screen mesh 10 into the box body 2. The other end of the screen mesh 10 is inserted into the fixing groove 601, and the box body 2 and the screen mesh 10 are further fixed through the fixing groove and the fixing protrusion. Due to the large amount of shield muck screening work, the size of this device is large. When it is inconvenient for manual installation, a hoisting device can be used to assist in the installation.

[0078] After the installation is completed, the screening of the muck can be started. Open the drive assembly to make the sliding plate 6 move up and down reciprocally along the height direction of the box body 2 under the drive of the electro-hydraulic rod 5. The screen mesh 10 rotates around each connecting shaft 3 with the up and down movement of the sliding plate 6, and the muck is continuously screened during this process. The muck that does not meet the size of the screen mesh 10 remains on the screen mesh 10, and the muck with qualified size enters the next-level screen mesh 10 until the screening of the muck is completed. After the screening is over, the first cover plate 203 can be opened to expose the gap between the installation groove 202 and the screen mesh 10, and make the sliding plate 6 move towards the direction close to the feed hopper 4, so that the screen mesh 10 and the connecting shaft 3 form a shape inclined towards the ground. At this time, substances such as stones on each layer can enter different collection devices through the gap between the installation groove 202 and the screen mesh 10, which is convenient for subsequent classification treatment of the screened muck. The finest fine muck directly enters the collection device at the bottom layer through the conveying pipe.

[0079] Meanwhile, when the screen mesh 10 is inclined (such as during the screening process and when removing stones), the solid structures such as stones on this layer of the screen mesh 10 will also impact the screen mesh 10 during the repeated inclination of the screen mesh 10, generating a local jitter effect with the impact center as the center point. This jitter effect has a better effect on removing the muck in the screen holes of the screen mesh 10, can prevent the screen mesh 10 from being blocked, and thus improve the stability of this device during use.

[0080] Embodiment 2

[0081] This embodiment is basically the same as Embodiment 1, the difference is that: in this embodiment, as Figures 3-4 shown, a vibration device is slidably arranged in the fixing groove 601. The vibration device includes a vibration ring 7 slidably connected to the fixing groove 601. A connecting groove 701 cooperating with the screen mesh 10 is arranged on the vibration ring 7. Two vibration plates 8 cooperating with the vibration ring 7 are arranged in the fixing groove 601, and the two vibration plates 8 are respectively arranged on both sides of the vibration ring 7.

[0082] In this embodiment, both the vibration ring 7 and the vibration plate 8 are made of stainless steel.

[0083] In this embodiment, the groove width of the fixing groove 601 is 5 times the height of the vibration ring 7.

[0084] In this embodiment, the vibration ring 7 is in shape fit with the fixed groove 601, that is, the vibration ring 7 serves as a sliding component of the fixed groove 601, and the length of the vibration ring 7 is equal to the length of the fixed groove 601.

[0085] In this embodiment, the shape of the connecting groove 701 is in dimension fit with the shape of the fixed protrusion. The length of the connecting groove 701 is the same as the length of the fixed protrusion, and the width is greater than the thickness of the screen mesh 10, which is 5 mm. That is, the fixed protrusion can be directly inserted into the connecting groove 701 and can rotate in the connecting groove 701.

[0086] In this embodiment, two vibrating plates 8 are arranged on both sides of the moving direction of the vibration ring 7, and the length of the vibrating plate 8 is 4 cm less than the length of the vibration ring 7.

[0087] In this embodiment, the vibrating plate 8 is welded to the fixed groove 601, and the vibrating plate 8 is welded to the bottom of the fixed groove 601.

[0088] The setting of the vibration device changes the sliding of the sliding plate 6 on the box body 2 into the sliding of the vibration ring 7 in the fixed groove 601. The connecting groove 701 on the vibration ring 7 is connected to the screen mesh 10. Driven by this sliding movement, the screen mesh 10 is changed into a rotational movement to a certain extent around the connecting shaft 3 as the center, improving the screening effect of the muck. At this time, a vibrating plate 8 that cooperates with the vibration ring 7 is also arranged in the fixed groove 601. When the vibration ring 7 moves towards one of the vibrating plates 8 under the dual action of the sliding plate 6 and the screen mesh 10, the vibration ring 7 will collide with the vibrating plate 8, resulting in a shaking effect on the screen mesh 10. Affected by this shaking effect, the muck will be further screened more thoroughly, improving the screening effect of the muck. At the same time, hard blocks in the muck, such as stones, will also collide with the screen mesh 10, generating another shaking effect centered on the impact center. This shaking effect has a better effect on removing the muck in the screen holes of the screen mesh 10, can prevent the screen mesh 10 from being blocked, and thus improves the stability of the device during use.

[0089] In this embodiment, buffer devices are respectively arranged on both sides of the vibration ring 7 close to the two vibrating plates 8.

[0090] In this embodiment, the buffer device is a spring 9. There are 4 springs 9. One end of each of the two ends of the 4 springs 9 is welded to the vibration ring 7, and the first section is welded to the fixed groove 601, and the end welded to the fixed groove 601 is located in the gap between the vibrating plate 8 and the side wall of the fixed groove 601.

[0091] The buffer device can provide buffering when the vibration ring 7 impacts and contacts the vibration plate 8 on either side, causing the screen 10 to vibrate, protecting the vibration plate 8 and the vibration ring 7, effectively extending the service life of the vibration ring 7 and the vibration plate 8, reducing the cost of the device during use, and improving economic efficiency.

[0092] In this embodiment, two baffles 602 are rotatably connected outside the fixed groove 601, a gap is provided between the two baffles 602, and the gap matches the shape and size of the screen 10.

[0093] In this embodiment, the baffle 602 is rotatably connected to the sliding plate 6 through a hinge rod.

[0094] The setting of the two baffles 602 can protect the fixed groove 601 during the rotation and jitter of the screen 10 in the box body 2, preventing muck from entering the fixed groove 601 and affecting the use of the vibration ring 7. Therefore, the setting of the baffle 602 ensures the smoothness and use effect of the device during use.

[0095] Embodiment 3

[0096] This embodiment is basically the same as Embodiment 1, except that: in this embodiment, as Figure 2 shown, a spraying part is provided in the box body 2, and the spraying part includes several spraying pipes 11 respectively arranged above each layer of the screen 10.

[0097] In this embodiment, 6 spraying pipes 11 are arranged above each screen 10. In this embodiment, the 6 spraying pipes 11 are evenly arranged in pairs on three box walls of the box body 2, the spraying pipes 11 are fixedly installed on the box body 2, and the distance between the spraying pipes 11 and the screen 10 is 15 cm. The screen 10 will not touch the spraying pipes 11 when rotating. In other embodiments, the spraying pipes 11 can be installed on the box body 2 as movable spraying pipes 11, and the screening net is reciprocally sprayed by moving the spraying pipes 11, which is not easy to make the sediment caking and improves the screening quality of the muck.

[0098] Through the spraying pipes 11, the stones and mud blocks remaining on the screen 10 can be cleaned, the mud blocks can be melted, and the mud blocks can be prevented from caking, further improving the separation effect between the mud blocks and the stones. The generated slurry is collected through the feeding cylinder 1, and the slurry can be directly used for filling the base after simple treatment, which not only improves the separation effect between the mud blocks and the stones, but also improves the economic efficiency of the muck.

[0099] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A muck screening device, characterized in that: It includes a box body (2), and a screening device is arranged inside the box body (2). The screening device includes several screen meshes (10) arranged along the height direction of the box body (2). The screen meshes (10) are detachably connected to the box body (2) through a connecting device. The connecting device includes a connecting part for connecting the box body (2) and the screen meshes (10) and a fixing part for fixing the screen meshes (10). When the screen meshes (10) are connected to the box body (2), the screen meshes (10) can rotate inside the box body (2) through the connecting part and the fixing part. The aperture diameters of the screen holes of several screen meshes (10) gradually decrease from top to bottom.

2. The muck screening device according to claim 1, wherein: Several mounting grooves (202) penetrating the side wall of the box body (2) are arranged on the box body (2). A connecting shaft (3) is arranged in each mounting groove (202). A snap ring matching with the connecting shaft (3) is arranged on the screen mesh (10). A first cover plate (203) matching with the mounting groove (202) is arranged on the box body (2).

3. A muck screening device according to claim 2, characterized in that: The fixing part includes a sliding plate (6) slidably connected to the box body (2). Several fixing grooves (601) respectively matching with the screen meshes (10) are arranged on the sliding plate (6).

4. A muck screening device according to claim 3, characterized in that: A vibration device is slidably arranged in the fixing groove (601). The vibration device includes a vibration ring (7) slidably connected to the fixing groove (601). A connecting groove (701) matching with the screen mesh (10) is arranged on the vibration ring (7). Two vibration plates (8) matching with the vibration ring (7) are arranged in the fixing groove (601). The two vibration plates (8) are respectively arranged on both sides of the vibration ring (7).

5. The muck screening device according to claim 4, characterized in that: Buffer devices are respectively arranged on both sides of the vibration ring (7) close to the two vibration plates (8).

6. A muck screening device according to any one of claims 3-5, characterized in that: Two baffle plates (602) are rotatably connected outside the fixing groove (601). A gap is arranged between the two baffle plates (602). The gap matches with the shape and size of the screen mesh (10).

7. A muck screening device according to any one of claims 1-5, characterized in that: A spraying part is arranged inside the box body (2). The spraying part includes several spraying pipes (11) respectively arranged above each layer of screen mesh (10).

8. A muck screening device according to any one of claims 1-5, characterized in that: A feed hopper (4) is connected to the top of the box body (2). The screen mesh (10) is arranged below the feed hopper (4). A feeding cylinder (1) is arranged below the box body (2).

Images