Building sand screening device
By using screen plates and vibrators with inclined sides in the construction sand material screening device, combined with the design of the material separation mechanism, the problem that sand material with smaller particle size cannot pass through the screen plate in time is solved, which significantly improves the screening effect of sand material.
Patent Information
- Application Number
- CN202421216265.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-30
AI Technical Summary
During the screening process of existing construction sand material screening devices, sand material with smaller particle size cannot pass through in time due to the short time of passing through the screening plate, resulting in poor screening effect.
A construction sand material screening device is designed, using screen plates and vibrators with inclined sides. The sand material is introduced into the top of the screen through the material separation mechanism, and the vibrator is used to increase the residence time of the sand material on the screen to ensure that the sand material with a smaller particle size can pass through the screen plate.
By increasing the residence time of sand material on the screen plate, the chance of sand material with smaller particle size passing through the screen plate is improved, and the screening effect of sand material is significantly improved.
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Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sand material screening, and in particular relates to a building sand material screening device. Background Art
[0002] Sand is often used in the construction process. Sand usually contains a small amount of stones. During construction and the production of test blocks for related inspections, the stones in the sand need to be screened out to ensure the quality of the sand used.
[0003] A Chinese patent with publication number CN220804314U discloses a quartz sand particle screening device, which includes a box and a screening plate, which is installed in an inclined state inside the box, and a discharge plate is installed in an inclined state below the screening plate. The side wall of the box is respectively provided with a first discharge port and a second discharge port at the bottom of the screening plate and the discharge plate. In the above scheme, sand is placed above the top of the screening plate, and the sand is screened by reciprocating the screening plate. At the same time, the screening plate and the discharge plate are set obliquely, so that stones with larger particle sizes and sand with smaller particle sizes can automatically flow to the first discharge port and the second discharge port respectively, thereby realizing the screening of the sand.
[0004] When the above scheme is in use, the sand material above the screening plate moves at a faster speed, and some sand materials with smaller particle sizes cannot pass through the screening plate in time and fall onto the discharge plate below due to the short time it takes to pass through the screening plate, which results in poor screening effect of the above scheme on the sand material. Utility Model Content
[0005] The utility model aims to provide a building sand material screening device to solve the problem of poor screening effect on sand material in the above scheme.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A construction sand screening device comprises a box body, a material dividing mechanism and a discharge hopper, the box body having an inner cavity, the top of the inner cavity being connected to a feed pipe which passes through the inner cavity from top to bottom, inclined sieve plates being symmetrically arranged on the left and right sides below the feed pipe in the inner cavity, a vibrator being fixedly arranged on the bottom of the sieve plate, first discharge ports being respectively provided on the left and right sides of the box body at the bottom of the sieve plate, a baffle being slidably provided on the side wall of the inner cavity at the first discharge port, the material dividing mechanism being provided below the feed pipe, and the material dividing mechanism being capable of intermittently introducing the sand entering through the feed pipe into the top of the two sieve plates, the discharge hopper being fixedly arranged below the two sieve plates and the material dividing mechanism, the bottom of the discharge hopper being connected to a discharge pipe which passes through the inner cavity, and a second discharge port being provided on the side wall of the box body at the bottom of the discharge pipe.
[0008] The principle and effect of this technical solution:
[0009] The sand is input into the inner cavity through the feed pipe, and the dividing mechanism is driven to guide the sand to flow into the top of the right sieve plate. At this time, the baffle close to the sieve plate abuts against the sieve plate at the first discharge port, and the sand with smaller particle size and the stone with larger particle size pass through the sieve plate by gravity. Some of the sand with smaller particle size falls into the discharge hopper below in this process, and the stone with larger particle size and the remaining sand with smaller particle size will remain at the bottom above the sieve plate. The baffle prevents them from flowing out from the first discharge port, and the vibrator drives the sieve plate to vibrate until the remaining sand with smaller particle size all falls into the discharge hopper below, and then drives the dividing mechanism to guide the sand to flow into the top of the left sieve plate, and at this time, moves up the baffle abutting against the right sieve plate, so that the stone with larger particle size flows out from the first discharge port on the right, and so on.
[0010] Through the above arrangement, the retention time of the sand on the screen plate can be increased, providing more opportunities for sand with smaller particle sizes to pass through the screen plate, avoiding the situation where sand with smaller particle sizes cannot pass through the screen plate due to a short retention time above the screen plate, thereby improving the screening effect.
[0011] In the utility model, the material distribution mechanism includes a partition, a connecting rod, a slider, a threaded rod and a motor. A crossbeam is fixedly arranged in the inner cavity below the feed pipe, the motor is fixedly arranged on the crossbeam, the threaded rod is rotatably arranged above the crossbeam, and the threaded rod is connected to the motor through a transmission assembly. The slider is fitted on the threaded rod, and the bottom of the slider is slidably abutted against the crossbeam, the bottom of the connecting rod is rotatably connected to the top of the slider, the partition is rotatably arranged in the inner cavity, and is located between the two sieve plates, and the top of the connecting rod is rotatably connected to the bottom of the partition.
[0012] The principle and effect of this technical solution:
[0013] In the initial state, the bottom of the right end of the partition abuts against the top of the right sieve plate, driving the motor to drive the threaded rod to rotate. Because the crossbeam limits the rotation of the slider, the slider moves with the rotation of the threaded rod, thereby driving the connecting rod to rotate and pulling the partition to rotate until the bottom of the left end of the partition abuts against the top of the left sieve plate, and so on.
[0014] Through the above arrangement, the material distribution mechanism can be driven to reciprocately guide the sand material into the top of the two sieve plates.
[0015] In the utility model, a guide rod is fixedly arranged on the top of the baffle plate, the guide rod is slidably arranged on the top wall of the inner cavity, a tension spring is sleeved on the top of the box body outside the guide rod, and the two ends of the tension spring are respectively connected to the box body and the top of the guide rod. Through the above arrangement, the bottom of the baffle plate can be continuously abutted against the top of the screen plate during the vibration of the screen plate, so as to prevent the sand from flowing out of the first discharge port during the vibration of the screen plate.
[0016] In the utility model, it also includes a lifting mechanism, which is arranged in two groups and respectively located on the left and right sides of the feed pipe. The lifting mechanism includes a sliding rod and a traction rope. The top wall of the inner cavity is provided with a through hole above the partition. The sliding rod is slidably passed through the through hole. One end of the traction rope is fixedly connected to the top of the sliding rod, and the other end of the traction rope is slidably passed through the top of the inner cavity above the baffle and is fixedly connected to the top of the baffle.
[0017] The principle and effect of this technical solution:
[0018] In the process of driving the partition to rotate until the bottom of its left end abuts against the top of the left sieve plate, the top of the right end of the partition slides against the bottom of the slide rod and pushes the slide rod to move upward. The slide rod pulls the traction rope to drive the right baffle plate to move upward, so that the larger particle size stones left on the top of the right sieve plate flow out from the first discharge port on the right.
[0019] Through the above arrangement, the device can automatically discharge stones with larger particle sizes after being screened by the screen plate in the process of changing the flow direction of the sand material, without the need to manually pull the baffle, thus saving human resources.
[0020] In the utility model, the lifting mechanism further comprises a first pulley and a second pulley respectively rotatably arranged on the top of the box body, the first pulley is arranged between the baffle plate and the slide bar near the baffle plate, the second pulley is arranged between the baffle plate and the slide bar near the slide bar, and the traction rope is sequentially wound around the first pulley and the second pulley. Through the above arrangement, the traction rope can be prevented from breaking due to friction, thereby extending the service life of the utility model.
[0021] In the utility model, the side wall of the through hole is provided with a convex strip in the vertical direction, and the side wall of the slide rod is provided with a limiting groove matched with the convex strip.
[0022] The principle and effect of this technical solution:
[0023] When the bottom of one end of the partition abuts against the top of the side screen plate, the slide bar above the side screen plate moves downward to the top of the convex strip and abuts against the top of the limiting groove. At this time, the lower edge height of the slide bar is higher than the rotation axis height of the partition.
[0024] Through the above arrangement, on the one hand, the slide bar can be prevented from rotating during the vertical movement, and on the other hand, the retention time of the sand material flowing in during the rotation of the partition plate on the top of the screen plate can be increased.
[0025] In the utility model, a torsion spring shaft is arranged on the top of the feed pipe in the transverse direction, and a first shield is arranged outside the torsion spring shaft.
[0026] In the utility model, a second shield is rotatably provided at the second discharge port.
[0027] The principle and effect of this technical solution:
[0028] Through the above arrangement, the inner cavity can be closed during the screening process to prevent the ash layer raised by the vibration of the screen plate from flowing out of the feed pipe and the second discharge port, thereby reducing the pollution to the environment outside the box body.
[0029] In the utility model, the transmission assembly includes a pulley and a transmission belt, wherein two pulleys are provided and are respectively fixedly provided at one end of the output shaft of the motor and one end of the threaded rod, and the transmission belt is sleeved on the two pulleys. Through the above arrangement, the purpose of making the motor drive the threaded rod to rotate is achieved.
[0030] In the present invention, the bottom of the slide bar is configured as a spherical surface. Through the above configuration, the friction between the slide bar and the partition plate can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 This is the axonometric drawing of the overall structure of the utility model;
[0032] Figure 2 It is a front sectional view of the utility model;
[0033] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0034] Figure 4 This is an exploded view of some parts of the utility model. DETAILED DESCRIPTION
[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:
[0036] The figure marks in the drawings of the specification include: 10, box body; 11, inner cavity; 12, feed pipe; 121, torsion spring shaft; 122, first baffle; 13, first discharge port; 14, second discharge port; 141, second baffle; 15, crossbeam; 16, through hole; 161, convex strip; 20, sieve plate; 30, baffle; 31, guide rod; 32, tension spring; 41, partition; 42, connecting rod; 43, slider; 44, threaded rod; 45, motor; 50, discharge hopper; 51, discharge pipe; 61, pulley; 62, transmission belt; 71, slide rod; 711, limit groove; 72, traction rope; 73, first pulley; 74, second pulley.
[0037] As attached Figure 1-4As shown, the utility model discloses a construction sand screening device, including a box body 10, a material distribution mechanism and a discharge hopper 50, the box body 10 has an inner cavity 11, the top of the inner cavity 11 is connected to a feed pipe 12 that passes through from top to bottom, and the inner cavity 11 is symmetrically provided with inclined screen plates 20 on the left and right sides below the feed pipe 12, and a vibrator (not shown in the figure) is fixedly provided at the bottom of the screen plate 20, and the left and right sides of the box body 10 are respectively provided with a first The discharge port 13, a baffle 30 is slidably provided on the side wall of the inner cavity 11 at the first discharge port 13, the dividing mechanism is arranged below the feed pipe 12, and the dividing mechanism can intermittently introduce the sand material entering from the feed pipe 12 into the top of the two sieve plates 20, the discharge hopper 50 is fixedly arranged below the two sieve plates 20 and the dividing mechanism, and the bottom of the discharge hopper 50 is connected to an inclined discharge pipe 51, and the side wall of the box body 10 is provided with a second discharge port 14 at the bottom of the discharge pipe 51.
[0038] In this embodiment, the material distribution mechanism includes a partition 41, a connecting rod 42, a slider 43, a threaded rod 44 and a motor 45. A crossbeam 15 is fixedly arranged in the inner cavity 11 below the feed pipe 12, and the motor 45 is fixedly arranged on the crossbeam 15. The threaded rod 44 is rotatably arranged above the crossbeam 15, and the threaded rod 44 is transmission-connected to the motor 45 through a transmission assembly. The slider 43 is cooperatively sleeved on the threaded rod 44, and the bottom of the slider 43 is slidingly abutted against the crossbeam 15, the bottom of the connecting rod 42 is rotationally connected to the top of the slider 43, the partition 41 is rotationally arranged in the inner cavity 11, and is located between the two sieve plates 20, and the top of the connecting rod 42 is rotationally connected to the bottom of the partition 41.
[0039] In this embodiment, a guide rod 31 is fixedly provided on the top of the baffle 30, and the guide rod 31 is slidably penetrated through the top wall of the inner cavity 11. A tension spring 32 is sleeved on the top of the box body 10 outside the guide rod 31, and the two ends of the tension spring 32 are respectively connected to the box body 10 and the top of the guide rod 31.
[0040] In this embodiment, a lifting mechanism is also included. The lifting mechanism is arranged in two groups and are respectively located on the left and right sides of the feed pipe 12. The lifting mechanism includes a sliding rod 71 and a traction rope 72. The top wall of the inner cavity 11 is provided with a through hole 16 above the partition 41. The sliding rod 71 is slidably inserted into the through hole 16. One end of the traction rope 72 is fixedly connected to the top of the sliding rod 71, and the other end of the traction rope 72 is slidably inserted into the top of the inner cavity 11 above the baffle 30 and is fixedly connected to the top of the baffle 30.
[0041] In this embodiment, the lifting mechanism also includes a first pulley 73 and a second pulley 74 which are rotatably arranged on the top of the box body 10 respectively. The first pulley 73 is arranged between the baffle 30 and the sliding rod 71, close to the side of the baffle 30, and the second pulley 74 is arranged between the baffle 30 and the sliding rod 71, close to the side of the sliding rod 71. The traction rope 72 is sequentially wound around the first pulley 73 and the second pulley 74.
[0042] In this embodiment, a convex strip 161 is vertically arranged on the side wall of the through hole 16 , and a limiting groove 711 cooperating with the convex strip 161 is arranged on the side wall of the sliding rod 71 .
[0043] In this embodiment, a torsion spring shaft 121 is disposed on the top of the feed pipe 12 in the transverse direction, and a first baffle 122 is sleeved outside the torsion spring shaft 121 .
[0044] In this embodiment, a second shielding plate 141 is rotatably provided at the second discharge port 14 .
[0045] In this embodiment, the transmission assembly includes a pulley 61 and a transmission belt 62 . There are two pulleys 61 , which are respectively fixed to one end of the output shaft of the motor 45 and one end of the threaded rod 44 . The transmission belt 62 is sleeved on the two pulleys 61 .
[0046] In this embodiment, the bottom of the sliding rod 71 is configured as a spherical surface.
[0047] The specific implementation process is as follows:
[0048] The sand is fed into the inner cavity 11 through the feed pipe 12, and the material distribution mechanism is driven to guide the sand to flow into the top of the right sieve plate 20. At this time, the baffle 30 close to the sieve plate 20 abuts against the sieve plate 20 at the first discharge port 13, and the sand with smaller particle size and the stone with larger particle size pass through the sieve plate 20 by gravity. Part of the sand with smaller particle size falls into the discharge hopper 50 below during this process, and the stone with larger particle size and the remaining sand with smaller particle size will remain at the bottom above the sieve plate 20. The baffle 30 prevents them from flowing out from the first discharge port 13, and the vibrator drives the sieve plate 20 to vibrate until the remaining sand with smaller particle size all falls into the discharge hopper 50 below, and then drives the material distribution mechanism to guide the sand to flow into the top of the left sieve plate 20, and at this time, moves up the baffle 30 abutting against the right sieve plate 20, so that the stone with larger particle size flows out from the first discharge port 13 on the right, and so on.
[0049] In the initial state, the bottom of the right end of the partition 41 abuts against the top of the right sieve plate 20, driving the motor 45 to drive the threaded rod 44 to rotate. Since the crossbeam 15 limits the rotation of the slider 43, the slider 43 moves with the rotation of the threaded rod 44, thereby driving the connecting rod 42 to rotate and pulling the partition 41 to rotate until the bottom of the left end of the partition 41 abuts against the top of the left sieve plate 20, and so on.
[0050] In the process of driving the partition 41 to rotate until the bottom of its left end abuts against the top of the left sieve plate 20, the top of the right end of the partition 41 slides and abuts against the bottom of the slide bar 71, and pushes the slide bar 71 to move upward. The slide bar 71 pulls the traction rope 72 to drive the right baffle plate 30 to move upward, so that the larger particle size stones left on the top of the right sieve plate 20 flow out from the first discharge port 13 on the right.
[0051] When the bottom of one end of the partition 41 abuts against the top of the side screen plate 20, the slide bar 71 above the side screen plate 20 moves downward to the top of the protrusion 161 and abuts against the top of the limiting groove 711. At this time, the lower edge height of the slide bar 71 is higher than the height of the rotation axis of the partition 41.
[0052] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the technical scheme of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A construction sand screening device, characterized in that: include: The box body has an inner cavity, the top of the inner cavity is connected to a feed pipe that passes through the inner cavity from top to bottom, and inclined screen plates are symmetrically arranged on the left and right sides of the inner cavity below the feed pipe, and a vibrator is fixedly arranged on the bottom of the screen plate. The left and right sides of the box body are respectively provided with first discharge ports at the bottom of the screen plate, and a baffle is slidably arranged on the side wall of the inner cavity at the first discharge port; A material distribution mechanism, which is arranged below the feed pipe and can intermittently guide the sand material entering from the feed pipe to the top of the two sieve plates; The discharging hopper is fixedly arranged below the two sieve plates and the material dividing mechanism, the bottom of the discharging hopper is connected to an inclined discharging pipe, and the side wall of the box body is provided with a second discharging port at the bottom of the discharging pipe.
2. The construction sand screening device according to claim 1, characterized in that: The material distribution mechanism includes a partition, a connecting rod, a slider, a threaded rod and a motor. A crossbeam is fixedly arranged in the inner cavity below the feed pipe, the motor is fixedly arranged on the crossbeam, the threaded rod is rotatably arranged above the crossbeam, and the threaded rod is connected to the motor through a transmission assembly. The slider is fitted on the threaded rod, and the bottom of the slider is slidably abutted against the crossbeam, the bottom of the connecting rod is rotatably connected to the top of the slider, the partition is rotatably arranged in the inner cavity, and is located between the two sieve plates, and the top of the connecting rod is rotatably connected to the bottom of the partition.
3. The construction sand screening device according to claim 2, characterized in that: A guide rod is fixedly arranged on the top of the baffle, and the guide rod is slidably arranged on the top wall of the inner cavity. A tension spring is sleeved on the top of the box body outside the guide rod, and the two ends of the tension spring are respectively connected to the box body and the top of the guide rod.
4. The construction sand screening device according to claim 3, characterized in that: It also includes a lifting mechanism, which is arranged in two groups and respectively located on the left and right sides of the feed pipe. The lifting mechanism includes a sliding rod and a traction rope. A through hole is opened on the top wall of the inner cavity above the partition. The sliding rod is slidably passed through the through hole. One end of the traction rope is fixedly connected to the top of the sliding rod, and the other end of the traction rope is slidably passed through the top of the inner cavity above the baffle and is fixedly connected to the top of the baffle.
5. The construction sand screening device according to claim 4, characterized in that: The lifting mechanism also includes a first pulley and a second pulley which are rotatably arranged on the top of the box body respectively. The first pulley is arranged between the baffle and the slide rod close to the baffle side, and the second pulley is arranged between the baffle and the slide rod close to the slide rod side. The traction rope is sequentially wound around the first pulley and the second pulley.
6. The construction sand screening device according to claim 5, characterized in that: The side wall of the through hole is vertically provided with a convex strip, and the side wall of the slide rod is provided with a limiting groove matched with the convex strip.
7. The building sand screening device according to any one of claims 1 to 6, characterized in that: A torsion spring shaft is arranged on the top of the feed pipe in the transverse direction, and a first shield is arranged outside the torsion spring shaft.
8. The building sand screening device according to any one of claims 1 to 6, characterized in that: A second shield is rotatably provided at the second discharge port.
9. The building sand screening device according to any one of claims 2 to 6, characterized in that: The transmission assembly comprises a pulley and a transmission belt. Two pulleys are provided and are respectively fixedly provided at one end of the output shaft of the motor and one end of the threaded rod. The transmission belt is sleeved on the two pulleys.
10. The building sand screening device according to any one of claims 4 to 6, characterized in that: The bottom of the slide bar is configured as a spherical surface.
Citation Information
Patent Citations
Quartz sand particle screening device
CN220804314U