Soil screening and conveying integrated equipment
By designing an integrated soil screening and conveying equipment with a screening section and a screw conveyor section, the problems of dust overflow and incomplete screening were solved, achieving a highly efficient and clean soil screening and conveying process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-03-10
AI Technical Summary
Existing soil screening and conveying equipment generates a large amount of dust during screening and conveying, which affects the environment and health, and the screening quality is poor.
An integrated soil screening and conveying device including a screening section and a screw conveyor section was designed. By setting up a valve group and a multi-layer screen group, the discharge volume is automatically adjusted to prevent dust overflow. The airtightness of the screw conveyor section reduces dust generation, while the vibrating motor is used to accelerate the screening speed.
It effectively prevents dust from spilling out, ensures environmental cleanliness, improves screening quality and efficiency, and adapts to the needs of multiple operating scenarios.
Smart Images
Figure CN223983205U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sludge treatment technology, specifically, to an integrated soil screening and conveying device. Background Technology
[0002] With the acceleration of urbanization and the increase in demand for sewage treatment, the amount of sludge generated is increasing year by year. Sludge treatment refers to the process of treating and disposing of sludge generated during sewage treatment. Sludge contains water, organic matter, inorganic matter, bacteria, pathogenic microorganisms, etc., and needs to undergo certain treatment processes to reduce its volume, decrease its pollution, and make it meet environmental protection standards. One sludge treatment process is to use the treated sludge as a soil conditioner or fertilizer, applying it directly to farmland or green belts. This method usually requires stabilization and harmless treatment of the sludge to ensure that it will not cause pollution. However, dried sludge contains many impurities, such as stones and other non-soil materials; therefore, it needs to be screened and transported to the next process flow before being used as a soil conditioner or fertilizer.
[0003] In most existing integrated soil screening and conveying equipment, the soil is exposed during screening and transportation, generating a large amount of dust that not only impacts the environment but also poses health risks to workers with prolonged inhalation. Furthermore, the conventional screening process results in poor soil screening quality, leading to incomplete screening. Utility Model Content
[0004] The purpose of this utility model is to provide an integrated soil screening and conveying equipment to solve the problems of dust overflow during soil screening and conveying, which affects personnel health and pollutes the environment.
[0005] This utility model is achieved through the following technical solution: an integrated soil screening and conveying device, comprising:
[0006] The screening unit includes a support, a screening box, a screen assembly, and a collection box. The screening box is mounted on the support and has an inlet, a outlet, and a waste discharge outlet. A valve assembly is installed on the outlet. The collection box is installed at the waste discharge outlet, and the screen assembly is installed inside the screening box. The opening degree of the valve assembly is determined by the positive pressure at the outlet of the screening box.
[0007] The spiral conveyor includes a conveying cylinder mounted on the support, a conveying motor mounted on the conveying cylinder, a spiral blade connected to the output end of the conveying motor, and a feed end on the conveyor connected to the discharge end of the screening box.
[0008] To better realize this utility model, the valve assembly further includes a valve pipe, which is installed on the discharge port of the screening box. A valve plate is rotatably connected to the valve pipe, and a torsion spring is provided between the valve plate and the valve pipe.
[0009] To better realize this utility model, a lever is axially rotatably connected to the rotating shaft of the valve plate. When the lever is retracted, its movable end protrudes relative to the rotating shaft of the valve plate.
[0010] To better realize this utility model, the screen assembly further includes a first screening plate, a second screening plate, and a connecting rod. The first screening plate and the second screening plate are both mounted on the connecting rod, and the connecting rod is mounted on the screening box. Multiple first screening plates and second screening plates are arranged at intervals. The first screening plates and the second screening plates are all installed at an incline in the screening box, and the lower end of the first screening plate and the second screening plate are both connected to the impurity discharge port. The inclination directions of the first screening plate and the second screening plate are opposite.
[0011] To better realize this utility model, a vibration motor is further installed on the screening box, and the output shaft of the vibration motor is connected to the connecting rod; sealing rings are attached to the edges of the first screening plate and the second screening plate.
[0012] To better realize this utility model, the screening box is further provided with a hook, the collection box is provided with a hanging ear, the hook and the hanging ear are fastened together, and the collection box is used to collect impurities discharged from the discharge port.
[0013] To better realize this utility model, the ear loop is further configured with one end closed and the other end open.
[0014] To better realize this utility model, the screening box further includes a box cover and a box body. The box cover is installed on the box body, the box body is installed on the bracket, the box cover is equipped with a feed hopper, and the feed hopper is equipped with multiple rubber plugs.
[0015] To better realize this utility model, further, an electric cylinder is rotatably connected to the conveying cylinder, the electric cylinder is rotatably connected to the bracket, the conveying cylinder is rotatably connected to the bracket, and the conveying cylinder and the valve pipe are connected through a telescopic flexible hose.
[0016] To better realize this utility model, the support is further provided with a slider, and the conveying cylinder is rotatably connected to the slider.
[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0018] (1) By setting up a valve group, this utility model realizes that the discharge volume of the screening box can be automatically determined according to the material input at the feed inlet when discharging; ensuring that a certain amount of material will always accumulate at the bottom of the screening box, that is, the space at the screen group and the screw conveyor will not be directly connected, thereby preventing a large amount of dust generated by screening materials from entering the screw conveyor; causing a large amount of dust when the screw conveyor discharges materials, maximizing the avoidance of dust leakage during material screening and conveying; ensuring the cleanliness of the surrounding environment; and also ensuring the health of relevant personnel.
[0019] (2) By setting up a screen group, this utility model can speed up the overall screening speed and improve the work efficiency through multi-layer screening from coarse to fine.
[0020] (3) This utility model achieves the tilt angle adjustment of the conveying cylinder by setting an electric cylinder, so as to adapt to multiple operation scenarios and improve practicality. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0022] Figure 2 This is a cross-sectional view of the overall structure of this utility model.
[0023] Figure 3 for Figure 2 Enlarged view of the local structure at point A in the middle.
[0024] Figure 4 This is a schematic diagram of a partial structure of the collection box.
[0025] Figure 5 This is a schematic diagram of the screen assembly structure.
[0026] Figure 6 This is a partial structural diagram of the valve assembly and screw conveyor section.
[0027] Figure 7 This is a schematic diagram of the valve assembly structure.
[0028] Figure 8 This is a schematic diagram of the valve plate, lever, and torsion spring.
[0029] Wherein: 101-Feed hopper; 102-Rubber plug; 103-Box cover; 104-Box body; 105-Collection box; 106-Support; 107-First screening plate; 108-Connecting rod; 109-Vibration motor; 110-Valve pipe; 111-Telescopic hose; 112-Hook; 113-Sealing ring; 114-Hanging ear; 115-Slider; 116-Valve plate; 117-Toggle lever; 118-Torsion spring; 119-Second screening plate; 201-Conveying cylinder; 202-Padded block; 203-Auxiliary plate; 204-Conveying motor; 205-Electric cylinder; 206-Spiral blade. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1:
[0032] This embodiment provides an integrated soil screening and conveying device, specifically as follows: Figures 1-2 As shown, it includes:
[0033] The screening section includes a support 106, a screening box, a screen assembly, and a collection box 105. The screening box is mounted on the support 106 and has an inlet, a outlet, and a waste outlet. A valve assembly is installed on the outlet. The collection box 105 is installed at the waste outlet, and the screen assembly is installed inside the screening box. The opening degree of the valve assembly is determined by the positive pressure at the outlet of the screening box.
[0034] When screening materials, the materials are fed into the inlet of the screening box and then pass through the screen assembly. Impurities are removed by the screen assembly and discharged from the discharge port into the collection box 105. The materials then fall to the bottom of the screening box. When the materials accumulate to a certain extent, the pressure on the valve assembly reaches the preset value, at which point the valve opens and the materials are discharged from the discharge port. If the feeding speed at the inlet is fast, the accumulation of materials at the bottom of the screening box will accelerate, resulting in increased pressure on the valve assembly. At this time, the valve opening will increase accordingly, achieving adaptive discharge of materials and preventing excessive accumulation. Similarly, if the feeding speed at the inlet is slow, the amount of material accumulated at the bottom of the screening box will decrease, and the pressure on the valve assembly will decrease until it is impossible to open the valve assembly.
[0035] The spiral conveyor includes a conveying cylinder 201 mounted on the support 106. The conveying cylinder 201 is equipped with a conveying motor 204, an auxiliary plate 203, and a pad 202. The pad 202 prevents direct contact between the conveying cylinder 201 and the container holding the material, and its buffering force prevents deformation of the conveying cylinder 201 or the container. The auxiliary plate 203 narrows the material flow width at the discharge end for easier collection. The output end of the conveying motor 204 is connected to a spiral blade 206. The feed end of the conveyor is connected to the discharge end of the screening box. When the conveying motor 204 is started, it drives the spiral blade 206 to rotate. When the electric cylinder 205 rotates, it pushes the material to move. Due to the airtightness of the conveying cylinder 201, the material does not overflow during conveying; instead, it settles and flows out from the auxiliary plate 203.
[0036] By setting up the aforementioned valve assembly, the screening box can automatically determine the discharge volume based on the amount of material fed into the inlet during discharge. This ensures that a certain amount of material always accumulates at the bottom of the screening box, meaning that the space at the screen assembly is not directly connected to the screw conveyor. This prevents a large amount of dust generated during material screening from entering the screw conveyor, thus minimizing dust leakage during material screening and conveying. This also ensures the cleanliness of the surrounding environment and protects the health of relevant personnel. Example 2:
[0037] This embodiment further expands the valve assembly based on the above embodiment, specifically as follows: Figures 6-8 As shown, the valve assembly includes a valve pipe 110, which is installed on the discharge port of the screening box. A valve plate 116 is rotatably connected to the valve pipe 110, and a torsion spring 118 is provided between the valve plate 116 and the valve pipe 110.
[0038] When material accumulates at the bottom of the screening box, valve plate 116 is subjected to downward pressure. If the accumulated material is small, the valve plate 116 will remain in place due to the elasticity of the torsion spring 118, and therefore the valve plate 116 will not deflect, meaning the valve will not open. When enough material accumulates, the downward pressure is greater than the elasticity of the torsion spring 118, at which point the valve plate 116 begins to deflect, and the material begins to be discharged. The amount of material accumulated in the screening box can be adjusted by changing the specifications of the torsion spring 118.
[0039] Preferably, a lever 117 is axially rotatably connected to the rotation axis of the valve plate 116. When the lever 117 is retracted, its movable end protrudes relative to the rotation axis of the valve plate 116. The purpose of providing the lever 117 is that when the lever 117 is retracted, external force cannot cause the valve plate 116 to rotate, preventing accidental opening of the valve; when needed, the lever 117 can be moved, allowing personnel to easily operate the valve plate 116.
[0040] In practical use, after a batch of materials has been screened, there is still material accumulation in the screening box. At this time, the operator manually pulls the lever 117 to the end of the valve plate 116 and then rotates it so that the lever 117 is perpendicular to the axis of rotation of the valve plate 116. The operator then moves the lever 117 to make the valve plate 116 rotate against the elastic force of the torsion spring 118, so as to completely discharge the material in the screening box and prevent the residual material in the screening box from being unable to be discharged.
[0041] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again. Example 3:
[0042] This embodiment further expands the screen assembly based on the above embodiment, specifically as follows: Figure 2 , Figure 5 As shown, the screen assembly includes a first screening plate 107, a second screening plate 119, and a connecting rod 108. The first screening plate 107 and the second screening plate 119 are both mounted on the connecting rod 108, which is mounted on the screening box. Multiple first screening plates 107 and second screening plates 119 are spaced apart, with the screen holes becoming finer from top to bottom. The first screening plates 107 and the second screening plates 119 are both installed at an angle in the screening box, and the lower end of each first screening plate 107 and the second screening plate 119 is connected to the impurity discharge port. The inclination directions of the first screening plate 107 and the second screening plate 119 are opposite.
[0043] After the material is fed into the inlet, it alternately passes through the first screening plate 107 and the second screening plate 119. Through multiple layers of screening from coarse to fine, the overall screening speed can be accelerated.
[0044] Preferably, a vibration motor 109 is installed on the screening box, the output shaft of the vibration motor 109 is connected to the connecting rod 108, and sealing rings 113 are attached to the edges of the first screening plate 107 and the second screening plate 119.
[0045] The vibration motor 109 causes the connecting rod 108 to drive the multiple first screening plates 107 and second screening plates 119 to vibrate, further accelerating the screening speed. The sealing ring 113 is provided to prevent the vibration of the first screening plates 107 and second screening plates 119 from being transmitted to the screening box, and to seal the gaps between the first screening plates 107 and second screening plates 119 and the screening box wall, preventing material from leaking out through the gaps.
[0046] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again. Example 4:
[0047] This embodiment further extends the above embodiment, specifically as follows: Figures 3-4As shown, the screening box is provided with a hook 112, and the collection box 105 is provided with a hanging ear 114. The hook 112 and the hanging ear 114 are fastened together. The collection box 105 is used to collect impurities discharged from the discharge port. Preferably, one end of the hanging ear 114 is closed and the other end is open.
[0048] The hook 112 and the lug 114 engage to securely mount the collection box 105 onto the screening box, preventing it from being dislodged even by shaking. The lug 114, with one end closed, provides a positioning function. When the worker attaches the lug 114 to the hook 112, it continues until it can no longer be pushed forward, indicating that the lug 114 is properly installed. At this point, the collection box 105 is perfectly aligned with the discharge port, reducing the time required for visual alignment and increasing accuracy.
[0049] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again. Example 5:
[0050] This embodiment further expands the screening box based on the above embodiment, specifically as follows: Figures 1-2 As shown, the screening box includes a box cover 103 and a box body 104. The box cover 103 is installed on the box body 104, and the box body 104 is installed on the bracket 106. A feed hopper 101 is installed on the box cover 103, and a plurality of rubber plugs 102 are installed on the feed hopper 101.
[0051] The cover 103 is detachably installed on the box body 104, which is convenient for staff to disassemble and maintain the machine; the feed hopper 101 is for adding materials; the rubber block 102 is to block the feed inlet as much as possible to prevent a large amount of dust generated during screening from overflowing.
[0052] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again. Example 6:
[0053] This embodiment further extends the above embodiment, specifically as follows: Figure 1 , Figure 6 As shown, an electric cylinder 205 is rotatably connected to the conveying cylinder 201, the electric cylinder 205 is rotatably connected to the bracket 106, the conveying cylinder 201 is rotatably connected to the bracket 106, and the conveying cylinder 201 is connected to the valve pipe 110 through a telescopic hose 111.
[0054] When the height of the container changes, the telescopic electric cylinder 205 adjusts the tilt angle of the conveyor cylinder 201 to adapt to various operating scenarios and improve practicality.
[0055] Preferably, a slider 115 is slidably connected to the support 106, and the conveying cylinder 201 is rotatably connected to the slider 115. When no adjustment is needed, the slider 115 is locked to the support 106; if the conveying cylinder 201 requires a higher tilt angle, the slider 115 is pushed towards the electric cylinder 205, which prevents the conveying cylinder 201 from interfering with the valve assembly or screening box; after use, the slider 115 is pushed away from the electric cylinder 205, at which point the center of gravity of the screw conveyor will shift towards the screening section, improving the overall stability.
[0056] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.
[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A soil screening and conveying integrated apparatus, characterized by, The utility model relates to a kind of screening device, including: Screening part, the screening part includes support (106), screening box, screen group, collection box (105), the screening box is installed on the support (106), the screening box is provided with feed inlet, discharge port, discharge port, the valve group is arranged on the discharge port, the collection box (105) is installed at discharge port, the screen group is installed in screening box;The opening of the valve group is determined by the positive pressure of the discharge port of the screening box; Screw conveying part, the screw conveying part includes conveying cylinder (201) installed on the support (106), conveying motor (204) is installed on the conveying cylinder (201), conveying motor (204) output end is connected with helical blade (206), the feed end of the conveying part is communicated with the discharge end of the screening box.
2. The soil screening and conveying integrated device according to claim 1, wherein: The valve group includes valve pipe (110), the valve pipe (110) is installed on the discharge port of the screening box, the valve piece (116) is rotatably connected on the valve pipe (110), and the valve piece (116) and the valve pipe (110) are provided with torsional spring (118).
3. The integrated soil screening and conveying apparatus of claim 2, wherein: The rotating shaft of the valve piece (116) is rotatably connected with the lever (117) in the axial direction, and the movable end of the lever (117) protrudes relative to the rotating shaft of the valve piece (116) when it is retracted.
4. The integrated soil screening and conveying apparatus of claim 1, wherein: The screen group includes first screening plate (107), second screening plate (119) and connecting rod (108), the first screening plate (107) and the second screening plate (119) are both installed on the connecting rod (108), and the connecting rod (108) is installed on the screening box;A plurality of first screening plates (107) and second screening plates (119) are arranged at intervals, the first screening plate (107) and the second screening plate (119) are both installed in the screening box in an inclined manner, and the low end of the first screening plate (107) and the second screening plate (119) is connected with the discharge port;The inclination direction of the first screening plate (107) and the second screening plate (119) is opposite.
5. The integrated soil screening and conveying apparatus of claim 4, wherein: The screening box is provided with a vibration motor (109), and the output shaft of the vibration motor (109) is connected with the connecting rod (108);The edge of the first screening plate (107) and the second screening plate (119) is adhered with a sealing ring (113).
6. The integrated soil screening and conveying apparatus of claim 1, wherein: The screening box is provided with a hook (112), the collection box (105) is provided with a lug (114), the hook (112) is buckled with the lug (114), and the collection box (105) is used for collecting impurities discharged from the discharge port.
7. The integrated soil screening and conveying apparatus of claim 6, wherein: One end of the lug (114) is closed, and the other end is open.
8. The integrated soil screening and conveying apparatus of claim 1, wherein: The screening box includes a cover (103) and a box body (104), the cover (103) is installed on the box body (104), the box body (104) is installed on the support (106), the feed hopper (101) is installed on the cover (103), and a plurality of rubber plugs (102) are installed on the feed hopper (101).
9. The integrated soil screening and conveying apparatus of claim 2, wherein: The conveying cylinder (201) is rotationally connected with an electric cylinder (205), the electric cylinder (205) is rotationally connected with the support (106), the conveying cylinder (201) is rotationally connected with the support (106), and the conveying cylinder (201) is communicated with the valve pipe (110) through a telescopic hose (111).
10. The integrated soil screening and conveying apparatus of claim 9, wherein: The support (106) is slidingly connected with a sliding block (115), and the conveying cylinder (201) is rotationally connected with the sliding block (115).