Sand screening device for building construction
By designing the spiral blades and circulating gas in the sand screening device, the problems of debris blocking the screen holes and dust being difficult to remove were solved, achieving efficient sand screening and debris separation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SANPAN CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-26
AI Technical Summary
In existing sand screening devices, debris easily blocks the screen holes during the screening process, reducing work efficiency and making it difficult to effectively remove dust from the sand.
A sand screening device was designed, comprising a screen cylinder, spiral blades, a mesh cylinder, an air extraction mechanism, and a reflux mechanism. The spiral blades agitate the raw material, the air extraction mechanism extracts the gas, and the reflux mechanism circulates the gas to achieve the removal of dust and the separation of impurities.
It effectively prevents debris from blocking the screen holes, improves sand screening efficiency, and effectively removes dust from the sand, thus increasing work efficiency.
Smart Images
Figure CN224405668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of sand screening devices, specifically to a sand screening device for building construction. Background Technology
[0002] Construction refers to the production activities during the implementation phase of an engineering project. It is the process of building various types of buildings, or the process of turning the lines on the design drawings into physical objects at a designated location. During construction, a large amount of sand is often used. Since sand often contains a certain amount of impurities, sand screening devices are often used to screen the sand before individual construction work to ensure the quality of the sand.
[0003] Existing sand screening devices generally use sieve plates or drum screens to perform sand screening operations. Since sand often contains a lot of dust, stones, or shells, the stones and shells block the sieve holes, reducing the working efficiency of the sand screening device. Moreover, because dust particles are extremely small, it is difficult to remove a large amount of dust from the sand using sieve plates and drum screens. Utility Model Content
[0004] Therefore, the technical problem to be solved by this utility model is to provide a sand screening device for construction, which can effectively prevent debris from blocking the screen holes or mesh holes during continuous sand screening, thereby improving the working efficiency of the sand screening device, and at the same time effectively removing dust from the sand.
[0005] To solve the above problems, this utility model provides a sand screening device for construction, including: a shell, through which a screen cylinder is rotatably inserted via a bearing, a spiral blade is fixedly installed inside the screen cylinder, a mesh cylinder is threaded onto one end of the screen cylinder, and the diameter of the screen hole of the screen cylinder is smaller than the diameter of the mesh hole of the mesh cylinder, and a feeding mechanism is provided at one end of the shell for introducing sand into the screen cylinder.
[0006] An air extraction mechanism, located at the bottom of the outer casing, is used to extract gas from inside the casing.
[0007] The reflux mechanism is located between the extraction mechanism and the sieve cylinder, and is used to guide the gas extracted by the extraction mechanism into the sieve cylinder.
[0008] Preferably, a driver is fixedly installed at the other end of the outer shell, and the driving end of the driver is fixedly sleeved on the outer periphery of the other end of the screen cylinder.
[0009] Preferably, the feeding mechanism includes a sealing plate and a feeding pipe. The sealing plate is fixedly installed in the opening at the other end of the screen cylinder, and one end of the feeding pipe is inserted into the screen cylinder and rotatably connected to the sealing plate.
[0010] Preferably, the feed pipe is L-shaped, and a feed hopper is fixedly installed at the other end of the feed pipe, with the interior of the feed hopper communicating with the interior of the feed pipe.
[0011] Preferably, the air extraction mechanism includes a water storage tank, which is fixedly installed on the bottom side of the outer shell. The interior of the water storage tank is connected to the interior of the outer shell through a connecting pipe. An air pump is fixedly installed on the outer peripheral wall of the top of the water storage tank, and the air extraction end of the air pump is inserted into the water storage tank.
[0012] Preferably, two electrically controlled valves are symmetrically fixed and penetrated on the outer peripheral wall of the bottom of the water storage tank, and the bottom end of the water inlet of each electrically controlled valve is coplanar with the inner bottom wall of the water storage tank.
[0013] Preferably, the reflux mechanism includes a diversion groove and a reflux pipe. The diversion groove is located on the bottom side of the screen cylinder, and the top opening of the diversion groove is slidably connected to the outer peripheral wall of the screen cylinder. Both ends of the diversion groove are fixedly connected to the inner wall of the outer shell. One end of the reflux pipe is inserted into the diversion groove and fixedly connected to the outer shell and the diversion groove, and the other end of the reflux pipe is connected to the exhaust end of the air pump.
[0014] This utility model has the following beneficial effects:
[0015] When in use, this improved sand screening device can continuously remove dust from sand by turning the raw material over, sliding the raw material in the screen cylinder, and circulating the gas in the device. It also separates sand from impurities through the screen cylinder, with almost no impurities blocking the screen holes or mesh, thus improving the working efficiency of the sand screening device and effectively removing dust from the sand. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a perspective view of the overall structure of this utility model;
[0018] Figure 2 This is a front view of the outer shell and the internal structure of the sieve cylinder of this utility model;
[0019] Figure 3 This is a perspective view of the outer shell and sieve plate of this utility model after rotating 180 degrees counterclockwise.
[0020] Figure 4 This is a perspective view of the internal structure of part of the diversion channel and water storage tank of this utility model;
[0021] Figure 5 This is a right view of the internal structure of the sieve cylinder and water storage tank of this utility model.
[0022] The reference numerals in the attached figures are as follows:
[0023] 1. Outer shell; 2. Screen cylinder; 3. Mesh cylinder; 4. Feeding mechanism; 41. Sealing plate; 42. Feeding pipe; 43. Feeding hopper; 5. Spiral blades; 6. Air extraction mechanism; 61. Water storage tank; 62. Connecting pipe; 63. Air pump; 64. Electrically controlled valve; 7. Return mechanism; 71. Diverter trough; 72. Return pipe; 8. Driver. Detailed Implementation
[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.
[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0028] See also Figure 1 and Figure 2As shown, according to an embodiment of the present utility model, a sand screening device for construction is provided, comprising: a shell 1, which is rotatably fitted with a screen cylinder 2 via a bearing, a spiral blade 5 fixedly installed inside the screen cylinder 2, a mesh cylinder 3 threadedly installed at one end of the screen cylinder 2, and the diameter of the screen hole of the screen cylinder 2 is smaller than the diameter of the mesh hole of the mesh cylinder 3, and a feeding mechanism 4 is provided at one end of the shell 1 for introducing sand into the screen cylinder 2.
[0029] The air extraction mechanism 6 is located at the bottom of the outer casing 1 and is used to extract gas from the outer casing 1.
[0030] The reflux mechanism 7 is located between the suction mechanism 6 and the sieve cylinder 2 and is used to guide the gas extracted by the suction mechanism 6 into the sieve cylinder 2.
[0031] In this embodiment, when the improved sand screening device is used, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the suction mechanism 6 starts to continuously extract the gas inside the outer shell 1, and the gas is reinjected into the screen cylinder 2 from the bottom end through the return mechanism 7.
[0032] Please refer to Figure 1 and Figure 2 As shown, the operator uses tools such as a hoist or shovel to continuously transport raw materials to the feeding mechanism 4 (the raw materials consist of sand, dust, pebbles, and shells, etc.). Then, the raw materials are fed into the screen cylinder 2 through the feeding mechanism 4. As the screen cylinder 2, the mesh cylinder 3, and the spiral blades 5 rotate inside the outer shell 1, the rotating spiral blades 5 push the raw materials into the mesh cylinder 3, while the rotating screen cylinder 2 continuously turns the raw materials at the bottom of the screen cylinder 2. Combined with the airflow blowing the sand, the dust is blown out of the raw materials. Then, the airflow carries the dust into the suction mechanism 6, where the dust in the gas is trapped and stored. After the raw materials are pushed into the mesh cylinder 3, the rotating mesh cylinder 3 turns the raw materials. The sand passes through the mesh of the mesh cylinder 3 and is discharged from the device, while the large-volume impurities in the raw materials (the impurities are pebbles and shells, etc.) are removed.
[0033] After the device is used, the user can unscrew the screen cylinder 3 from the sieve cylinder 2 to remove the debris trapped in the screen cylinder 3 from the device. The debris can be poured out by tilting the screen cylinder 3. Finally, the screen cylinder 3 can be screwed back into the sieve cylinder 2 to complete the cleaning of the debris in the device.
[0034] In summary, when this improved sand screening device is in use, it can continuously remove dust from the sand through the turning of the raw material, the sliding of the raw material in the screen cylinder 2, and the circulation of gas in the device. The sand and impurities are separated by the screen cylinder 3. There is almost no situation where impurities block the screen holes or the screen, which improves the working efficiency of the sand screening device and can effectively remove dust from the sand.
[0035] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the other end of the outer casing 1 is fixedly equipped with a driver 8, and the driving end of the driver 8 is fixedly sleeved on the outer periphery of the other end of the screen cylinder 2.
[0036] In this embodiment, please refer to Figure 3 As shown, during the use of the sand screening device, the driver 8 continuously drives the screen cylinder 2 to rotate slowly, thereby driving the screen cylinder 3 to rotate. (The driver 8 is mainly composed of the outer shell 1, motor, gear ring and gear transmission structure. The motor drives the gear ring to rotate through the gear transmission structure. The gear ring is fixedly sleeved on the outer periphery of the screen cylinder 2.) The device has a high degree of automation.
[0037] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the feeding mechanism 4 includes a sealing plate 41 and a feeding pipe 42. The sealing plate 41 is fixedly installed in the opening at the other end of the screen cylinder 2, and one end of the feeding pipe 42 is inserted into the screen cylinder 2 and rotatably connected to the sealing plate 41.
[0038] In this embodiment, please refer to Figure 1 and Figure 2 As shown, the raw material is guided by the conduit through the support of the sealing plate 41 and slides into the screen cylinder 2. Due to the obstruction of the sealing plate 41, the raw material will not slide out from the opening at the other end of the screen cylinder 2 after entering the screen cylinder 2.
[0039] In a further preferred embodiment of this utility model, such as Figure 1 As shown, the feed pipe 42 is L-shaped, and the other end of the feed pipe 42 is fixedly equipped with a feed hopper 43, and the interior of the feed hopper 43 is connected to the interior of the feed pipe 42.
[0040] In this embodiment, please refer to Figure 1 As shown, the cooperation between the feed hopper 43 and the guide tube expands the area of the feed inlet of the device, making it easier for tools such as elevators or shovels to feed raw materials into the guide tube.
[0041] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the air extraction mechanism 6 includes a water storage tank 61, which is fixedly installed on the bottom side of the outer shell 1. The interior of the water storage tank 61 is connected to the interior of the outer shell 1 through a connecting pipe 62. An air pump 63 is fixedly installed on the outer peripheral wall of the top of the water storage tank 61, and the air extraction end of the air pump 63 is inserted into the water storage tank 61.
[0042] In this embodiment, please refer to Figure 2 , Figure 4 and Figure 5 As shown, during the rotation of the screen cylinder 2, the air pump 63 starts to continuously draw gas from the water storage tank 61, so that a negative pressure chamber is continuously formed inside the water storage tank 61. At this time, a pressure difference of corresponding strength is generated at both ends of the connecting pipe 62, so that the gas inside the outer shell 1 continuously flows through the connecting pipe 62 into the water in the water storage tank 61. Subsequently, the gas travels through the water. When the gas rises out of the water in the water storage tank 61 to replenish the gas lost in the water storage tank 61, during the process of the gas traveling through the water, due to the adhesion of water to dust, the dust in the gas is trapped and stored in the water in the water storage tank 61, so as to avoid the air pump 63 being mixed with too much dust, which would damage the air pump 63 and reduce its service life.
[0043] In a further preferred embodiment of this utility model, such as Figure 5 As shown, two electrically controlled valves 64 are symmetrically fixed and installed on the outer peripheral wall of the bottom of the water storage tank 61, and the bottom end of the water inlet of each electrically controlled valve 64 is coplanar with the inner bottom wall of the water storage tank 61.
[0044] In this embodiment, (two electrically controlled valves 64, one of which is connected to a drain pipe for guiding sewage to a corresponding location for discharge, such as a drainage ditch or sewage treatment equipment; the other electrically controlled valve 64 is connected to an external water source via a pipe), please refer to Figure 2 and Figure 5 As shown, during the use of the device, the two electrically controlled valves 64 open at regular intervals to discharge the sewage in the water storage tank 61 and replenish it with clean water, so as to avoid the water in the water storage tank 61 being mixed with too much dust and affecting the use of the device.
[0045] In a further preferred embodiment of this utility model, such as Figure 2 , Figure 4 and Figure 5 As shown, the reflux mechanism 7 includes a diversion groove 71 and a reflux pipe 72. The diversion groove 71 is located on the bottom side of the screen cylinder 2, and the top opening of the diversion groove 71 is slidably connected to the outer peripheral wall of the screen cylinder 2. Both ends of the diversion groove 71 are fixedly connected to the inner wall of the outer shell 1. One end of the reflux pipe 72 is inserted into the diversion groove 71 and fixedly connected to the outer shell 1 and the diversion groove 71. The other end of the reflux pipe 72 is connected to the exhaust end of the air pump 63.
[0046] In this embodiment, please refer to Figure 2 , Figure 4 and Figure 5 As shown, during the rotation of the screen cylinder 2, it is always in contact with the opening end of the diversion channel 71. The gap between the diversion channel 71 and the outer wall of the screen cylinder 2 is extremely small, so that the gas in the diversion channel 71 will hardly flow out from the gap between the diversion channel 71 and the outer wall of the screen cylinder 2. Finally, almost all the gas used for return is blown onto the raw material.
[0047] The gas drawn by the air pump 63 is directly injected into the diversion tank 71 through the return pipe 72. Due to the obstruction of the wall of the screen cylinder 2, some gas passes through the screen holes of the screen cylinder 2 and flows into the screen cylinder 2. The other part of the gas first diffuses in the diversion tank 71 and then flows into the screen cylinder 2 through the screen holes at the top of the diversion tank 71. Due to the gravity of the raw material itself, the raw material is always at the bottom of the screen cylinder 2. At this time, the gas flowing into the screen cylinder 2 continues to blow in the raw material, and then passes through the gaps between the raw materials, carrying the dust in the raw materials through the holes at other positions of the screen holes and flows into the outer shell 1. It is then introduced into the water in the water storage tank 61 through the connecting pipe 62.
[0048] Working principle: When this improved sand screening device is in use, the driver 8 drives the screen cylinder 2 to rotate continuously, so that the raw material in the screen cylinder 2 slowly slides into the mesh cylinder 3 until the raw material enters the mesh cylinder 3 and continuously completes the turning process of the raw material. At the same time, the air pump 63 drives the gas to circulate in the screen cylinder 2, the outer shell 1 and the water storage tank 61, and continuously blows it on the raw material. Thus, the dust in the raw material is carried into the water in the water storage tank 61 by the gas passing through the gaps in the raw material. After the raw material moves into the mesh cylinder 3, the sand and impurities are separated by turning the raw material by rotating the mesh cylinder 3.
[0049] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.
[0050] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A sand screening device for building construction, characterized in that, include: The outer shell (1) is rotatably fitted with a screen cylinder (2) through a bearing. The screen cylinder (2) is fixedly fitted with a spiral blade (5). One end of the screen cylinder (2) is threaded with a mesh cylinder (3), and the diameter of the screen hole of the screen cylinder (2) is smaller than the diameter of the mesh hole of the mesh cylinder (3). One end of the outer shell (1) is provided with a feeding mechanism (4) for introducing sand into the screen cylinder (2). An air extraction mechanism (6) is located at the bottom of the outer casing (1) and is used to extract gas from the outer casing (1). The reflux mechanism (7) is located between the suction mechanism (6) and the sieve cylinder (2) and is used to introduce the gas extracted by the suction mechanism (6) into the sieve cylinder (2).
2. The sand screening device for building construction according to claim 1, characterized in that: The other end of the outer shell (1) is fixedly equipped with a driver (8), and the driving end of the driver (8) is fixedly sleeved on the outer periphery of the other end of the screen cylinder (2).
3. A sand screening device for building construction according to claim 2, characterized in that: The feeding mechanism (4) includes a sealing plate (41) and a feeding pipe (42). The sealing plate (41) is fixedly installed in the opening at the other end of the screen cylinder (2), and one end of the feeding pipe (42) is inserted into the screen cylinder (2) and rotatably connected to the sealing plate (41).
4. A sand screening device for building construction according to claim 3, characterized in that: The feed pipe (42) is L-shaped, and a feed hopper (43) is fixedly installed at the other end of the feed pipe (42), and the interior of the feed hopper (43) is connected to the interior of the feed pipe (42).
5. A sand screening device for building construction according to claim 4, characterized in that: The air extraction mechanism (6) includes a water storage tank (61), which is fixedly installed on the bottom side of the outer shell (1). The interior of the water storage tank (61) is connected to the interior of the outer shell (1) through a connecting pipe (62). An air pump (63) is fixedly installed on the outer peripheral wall of the top of the water storage tank (61), and the air extraction end of the air pump (63) is inserted into the water storage tank (61).
6. A sand screening device for building construction according to claim 5, characterized in that: Two electrically controlled valves (64) are symmetrically fixed and installed on the outer peripheral wall of the bottom of the water storage tank (61), and the bottom end of the water inlet of each electrically controlled valve (64) is coplanar with the inner bottom wall of the water storage tank (61).
7. A sand screening device for building construction according to claim 6, characterized in that: The return mechanism (7) includes a diversion groove (71) and a return pipe (72). The diversion groove (71) is located on the bottom side of the screen cylinder (2), and the top opening of the diversion groove (71) is slidably connected to the outer peripheral wall of the screen cylinder (2). Both ends of the diversion groove (71) are fixedly connected to the inner wall of the outer shell (1). One end of the return pipe (72) is inserted into the diversion groove (71) and fixedly connected to the outer shell (1) and the diversion groove (71). The other end of the return pipe (72) is connected to the exhaust end of the air pump (63).