Screen mesh
By setting up a blocking crossbar on the screen to block the slide of prefabricated sand, the problem of incomplete screening of machined sand is solved, achieving more efficient screening effect and smoother prefabricated sand drop.
Patent Information
- Application Number
- CN202421631089.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-10
AI Technical Summary
During the screening process of machined sand, prefabricated sand is adhered to each other due to the high moisture content and the adhesion of sand and gravel of different particle sizes, resulting in incomplete screening on the vibrating screen, which requires multiple screenings.
A screen is designed, using a body arranged inclined, and a barrier crossbar is provided on the body. The barrier crossbar is used to block the slide of prefabricated sand and reduce its passing speed, thereby improving the screening effect.
By blocking the drop of prefabricated sand by blocking the crossbar, the speed of passing is reduced, the screening effect is improved, and the probability that prefabricated sand is stuck between the blocking crossbar and the body is reduced, so that the drop screening of prefabricated sand is smoother.
Smart Images
Figure CN222919079U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of manufactured sand production, and particularly to a screen mesh. Background Art
[0002] Manufactured sand is made by crushing stones. Different from sea sand, it has uniform particles and no salt, and is widely used. In the production process of manufactured sand, screening and crushing are equally important. If the particle size is too large, it means insufficient crushing and needs to be crushed again; if the particle size is too small, it is stone powder and stone mud, which cannot be directly used and needs to be screened out as much as possible to reduce the content.
[0003] During the screening process of manufactured sand, multiple screenings are required, mainly through vibrating screens. The screen mesh on the vibrating screen is inclined, and after precast sand is fed from above the highest end of the screen mesh to below, the precast sand moves downward along the upper surface of the screen mesh. The precast sand has a high water content, and gravel of different particle sizes stick to each other and gradually accelerate and move downward rapidly under the action of gravity, resulting in incomplete screening. Often, multiple screenings are required, which needs to be improved. Summary of the Utility Model
[0004] In order to improve the problem of incomplete screening caused by the rapid downward movement of precast sand on the screen mesh, this application provides a screen mesh.
[0005] A screen mesh provided by this application adopts the following technical solution:
[0006] A screen mesh includes a body that is inclined and used for filtering precast sand. A blocking crossbar is provided on the body, and the blocking crossbar is used to block the downward movement of precast sand.
[0007] By adopting the above technical solution, the blocking crossbar blocks the falling of precast sand, reducing the passing speed of precast sand to improve the screening effect.
[0008] Optionally, the upper end surface of the blocking crossbar for blocking precast sand is horizontally arranged.
[0009] By adopting the above technical solution, while the precast sand is blocked by the blocking crossbar, it will also jump over the blocking crossbar under the inertia of the reaction force. At the same time, through the horizontally arranged upper end surface of the blocking crossbar, the precast sand will not be completely stopped and stuck, reducing the probability that some precast sand is stuck between the blocking crossbar and the body, resulting in the accumulation of precast sand on the blocking crossbar, reducing the influence of the quantity of precast sand, and making the falling and screening of precast sand smoother.
[0010] Optionally, the upper end surface of the blocking crossbar for blocking precast sand is inclined along the direction of gravity the farther away from the body.
[0011] By adopting the above technical solution, while the prefabricated sand is blocked by the blocking cross bar, it will also pass through the blocking cross bar under the inertia of the reaction force and the inclined guidance of the blocking cross bar, which plays a role in blocking the impact of the prefabricated sand, reducing the falling speed of the prefabricated sand, and at the same time guiding the decelerated prefabricated sand to pass through, making the falling and screening of the prefabricated sand smoother.
[0012] Optionally, the number of the blocking cross bars is multiple, and the multiple blocking cross bars are distributed along the direction in which the prefabricated sand slides on the body.
[0013] By adopting the above technical solution, the multiple blocking cross bars intermittently block the prefabricated sand, reducing the probability that the prefabricated sand has too high a speed due to the acceleration of gravity for a long time and over a long distance, playing a role in stabilizing the falling speed of the prefabricated sand and further improving the screening effect.
[0014] Optionally, the cross section of the blocking cross bar along the direction of the prefabricated sand sliding is triangular.
[0015] By adopting the above technical solution, the cross section of the blocking cross bar is triangular, with good structural stability and good speed reduction effect.
[0016] Optionally, it includes a clamp. The clamp is clamped on the body. A horizontal rotating shaft is rotatably arranged on the clamp. A horizontal indicating plate and a counterweight bar are symmetrically arranged on both sides of the horizontal rotating shaft. The counterweight bar and the horizontal indicating plate have equal mass. A locking component for locking the rotation of the horizontal rotating shaft is arranged on the clamp.
[0017] By adopting the above technical solution, for the large equipment installed on the body, limited by the precision of the large equipment, the precision of the body and the wear deviation after long-term use of the equipment, the installation angle of the body on the equipment cannot be accurately determined, and it is difficult to select blocking cross bars of different angle models. However, by first clamping the clamp on the body and then simply placing the body on the equipment, after the horizontal indicating plate maintains a horizontal and stable state, the horizontal rotating shaft is locked through the locking component, and then the body is removed. Different specifications and models of blocking cross bars can be safely and conveniently placed between the body and the horizontal indicating plate on the ground to test whether they are suitable, thus accurately determining the angle of the body and the model of the matching blocking cross bar.
[0018] Optionally, the locking component includes a sleeve slidably arranged on the clamp. A flexible ring is arranged on the inner wall of the sleeve. The inner circle of the flexible ring forms a clamping cavity for clamping on the horizontal rotating shaft.
[0019] By adopting the above technical solution, by sliding the sleeve, the clamping cavity clamps and stabilizes the horizontal rotating shaft, and the locking of the horizontal rotating shaft at any rotation angle is realized through the friction force between the clamping cavity and the horizontal rotating shaft, which is convenient and fast.
[0020] Optionally, the sliding direction of the sleeve is coaxial with the extending direction of the horizontal rotating shaft.
[0021] By adopting the above technical solution, since the sliding direction of the sleeve is coaxial with the extending direction of the horizontal rotating shaft, the probability of the sleeve sliding interfering with the horizontal rotating shaft is reduced, ensuring that the horizontal rotating shaft can still maintain the angular position before being locked by the sleeve during the locking process by the sleeve.
[0022] Optionally, a plurality of hook claws are rotatably arranged on the fixture, and the plurality of hook claws are inserted into the sieve holes of the body and hooked tightly on the body. A clamping elastic member is arranged on the rotating shaft of the hook claw, and the clamping elastic member is used to rotate the hook claw in the clamping direction.
[0023] By adopting the above technical solution, the fixture can be detachably fixed on the body by the hook claws, which is convenient and fast.
[0024] Optionally, a balance seat is rotatably arranged on the fixture, and the hook claw is rotatably arranged on the balance seat.
[0025] By adopting the above technical solution, by rotating the fixture on the balance seat, the fixture can be adapted to bodies of more different sieve hole models.
[0026] In summary, the present application includes at least one of the following beneficial technical effects:
[0027] 1. Reducing the passing speed of the prefabricated sand to improve the screening effect;
[0028] 2. Reducing the probability that some prefabricated sand is stuck between the blocking cross bar and the body, resulting in the accumulation of prefabricated sand on the blocking cross bar, reducing the influence of the quantity of prefabricated sand, and making the falling and sieving of prefabricated sand smoother;
[0029] 3. Achieving accurate determination of the angle of the body and the model of the adapted blocking cross bar. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 is an overall structural schematic diagram of a sieve mesh in Embodiment 1 of the present application.
[0031] Figure 2 is a structural schematic diagram highlighting the inclination angle of the upper end surface of the blocking cross bar.
[0032] Figure 3 is a structural schematic diagram highlighting the inclination angle of the upper end surface of the blocking cross bar of a sieve mesh in Embodiment 2 of the present application.
[0033] Figure 4 is an overall structural schematic diagram of a sieve mesh in Embodiment 3 of the present application.
[0034] Figure 5 It is a schematic structural diagram highlighting the fixture.
[0035] Figure 6 It is an exploded structural diagram highlighting the locking component.
[0036] Explanation of reference numerals: 1. Body; 11. Blocking cross bar; 2. Fixture; 21. Rotating shaft; 22. Horizontal indicating plate; 23. Counterweight bar; 3. Locking component; 31. Sleeve; 32. Flexible ring; 33. Clamping cavity; 34. Extension rod; 35. Sleeve hole; 4. Hook; 41. Clamping elastic member; 42. Balance seat. Specific implementation manners
[0037] The following further elaborates on this application in conjunction with the attached Figures 1-6 drawings.
[0038] Embodiment 1 of this application discloses a sieve. Referring to Figure 1 , the sieve includes a body 1 that is inclined and used for filtering precast sand. In this embodiment, the direction of gravity is downward, and the direction opposite to downward is upward. The body 1 is a sieve that screens precast sand through the diameter of the sieve holes and is usually made of a metal material. The precast sand slides and is screened from top to bottom on the body 1. A plurality of blocking cross bars 11 are fixedly connected to the upper end surface of the body 1. The blocking cross bars 11 are used to block the downward sliding of the precast sand. The plurality of blocking cross bars 11 are distributed from top to bottom on the upper end surface of the body 1, and the length direction of the blocking cross bars 11 extends along the direction perpendicular to the direction of gravity. The length direction of the body 1 is the downward sliding direction of the precast sand, and the length of the blocking cross bars 11 is the same as the width direction of the body 1. The blocking cross bars 11 can be fixed to the body 1 by welding or other means.
[0039] Referring to Figure 1 and Figure 2 , when the precast sand falls from top to bottom on the body 1, it will land on the upper end surface of the blocking cross bars 11. The upper end surface of the blocking cross bars 11 is used to block the precast sand. In this embodiment, the cross-section of the blocking cross bars 11 along the downward sliding direction of the precast sand is triangular, that is, one side of the blocking cross bars 11 that fits on the upper end surface of the body 1 is a side edge, the upper end surface of the blocking cross bars 11 is a side edge, and the last side edge connects the previous two side edges. In this embodiment, the angle between the last side edge and the upper end surface of the blocking cross bars 11 is an acute angle, while in other embodiments, the angle between the last side edge and the upper end surface of the blocking cross bars 11 can be an obtuse angle. The upper end surface of the blocking cross bars 11 for blocking the precast sand is horizontally arranged, that is, the upper end surface of the blocking cross bars 11 is perpendicular to the direction of gravity.
[0040] In Embodiment 1 of the present application, the implementation principle of a sieve is as follows: When prefabricated sand falls from top to bottom onto the body 1 for screening, the prefabricated sand will impact on the upper end surface of the blocking crossbar 11, then slide off from the upper end surface of the blocking crossbar 11 and continue to fall on the body 1 and slide, and then impact on the upper end surface of the next blocking crossbar 11.
[0041] Embodiment 2:
[0042] Different from Embodiment 1, Embodiment 2 of the present application discloses a sieve. Refer to Figure 3 , the upper end surface of the sieve blocking crossbar 11 for blocking prefabricated sand is inclined downward in the direction farther away from the body 1, that is, if the included angle between the body 1 and the gravity direction is α, and the included angle between the upper end surface of the blocking crossbar 11 and the gravity direction is β, α < β < 90°.
[0043] Embodiment 3:
[0044] Different from Embodiment 1, Embodiment 3 of the present application discloses a sieve. Refer to Figure 4 And Figure 5 , including a fixture 2, a balance seat 42 is rotatably connected to the lower end surface of the fixture 2. In this embodiment, the balance seat 42 is a square flat cuboid, and in other embodiments, the balance seat 42 can also be of other shapes. A plurality of hook claws 4 are rotatably connected to the edge of the balance seat 42. The plurality of hook claws 4 are grouped in pairs of two, and the two hook claws 4 in the same group are symmetrically installed on both sides of the balance seat 42.
[0045] Refer to Figure 4 And Figure 5 , a clamping elastic member 41 is sleeved on the rotating shaft of the hook claw 4. In this embodiment, the clamping elastic member 41 is a torsion spring. One end of the clamping elastic member 41 is fixedly connected to the rotating shaft of the hook claw 4, and the other end of the clamping elastic member 41 is fixedly connected to the balance seat 42. A protruding hook is formed at the end of the hook claw 4 extending along the direction away from the fixture 2. The hook claw 4 extends into the sieve hole of the body 1, and the hook is hooked on the body 1 forming the sieve hole. The clamping elastic members 41 on the hook claws 4 in the same group are used to rotate the two clamping elastic members 41 in the same group towards each other to tightly hook on the body 1.
[0046] Refer to Figure 4 And Figure 5, the fixture 2 is clamped on the body 1 through the claw 4. A horizontal rotating shaft 21 is rotatably connected to the fixture 2. The horizontal rotating shaft 21 extends in the horizontal direction, that is, the extending direction of the horizontal rotating shaft 21 is perpendicular to the connection line of the fixture 2 facing the balance seat 42. A horizontal indicating plate 22 and a counterweight bar 23 are symmetrically and fixedly connected to both sides of the extending direction of the horizontal rotating shaft 21. The length direction of the horizontal indicating plate 22 and the length direction of the counterweight bar 23 both extend along the extending direction of the horizontal rotating shaft 21. The width of the counterweight bar 23 is less than the shortest distance between the horizontal rotating shaft 21 and the upper end face of the balance seat 42. In this embodiment, the counterweight bar 23 is supported by a material with a density much greater than that of the horizontal indicating plate 22 to make the mass of the counterweight bar 23 equal to that of the horizontal indicating plate 22.
[0047] Referring to Figure 6 , a locking component 3 for locking the rotation of the horizontal rotating shaft 21 is installed on the fixture 2. The locking component 3 includes an extension rod 34 fixedly connected to the balance seat 42 and a sliding sleeve 31. The extension rod 34 extends in the direction away from the end of the balance seat 42 towards the extending direction of the horizontal rotating shaft 21, and the extending distance of the extension rod 34 exceeds the end of the horizontal rotating shaft 21. The end of the extension rod 34 is flared, that is, the cross-sectional diameter of the end of the extension rod 34 is greater than the cross-sectional diameter of the middle section of the extension rod 34. A sleeve hole 35 is opened on the end of the extension rod 34, and the sleeve 31 slides in the sleeve hole 35. A flexible ring 32 is fixedly connected to the inner peripheral wall of the sleeve 31, and a clamping cavity 33 for clamping on the horizontal rotating shaft 21 is formed inside the flexible ring 32. The extending direction of the sleeve hole 35 is coaxially arranged with the extending direction of the horizontal rotating shaft 21, that is, the sliding direction of the sleeve 31 is coaxial with the extending direction of the horizontal rotating shaft 21, so that the sleeve 31 slides along the direction of sleeving on the end of the horizontal rotating shaft 21 or separating from the end of the horizontal rotating shaft 21. There is also a cooperation of a limiting groove and a limiting block between the outer side wall of the sleeve 31 and the inner wall of the sleeve hole 35. The limiting groove extends along the sliding direction of the sleeve 31, and the limiting block is clamped and slides inside the limiting groove. The limiting groove can be opened on the outer side wall of the sleeve 31 or the inner wall of the sleeve hole 35. Correspondingly, the limiting block is installed on the inner wall of the sleeve hole 35 or the outer side wall of the sleeve 31 to limit the rotation of the sleeve 31, so as to enable the sleeve 31 to only slide. In this embodiment, the flexible ring 32 is made of a flexible material, such as rubber, resin, or even plastic to achieve an interference fit.
[0048] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. A screen, characterized in that: It comprises a main body (1) which is arranged in an inclined manner and is used for filtering prefabricated sand, wherein a blocking cross bar (11) is arranged on the main body (1), and the blocking cross bar (11) is used to prevent the prefabricated sand from sliding down; The invention comprises a clamp (2), wherein the clamp (2) is clamped on the body (1), a horizontal rotating shaft (21) is rotatably arranged on the clamp (2), a horizontal indicating plate (22) and a counterweight bar (23) are symmetrically arranged on both sides of the horizontal rotating shaft (21), the counterweight bar (23) and the horizontal indicating plate (22) have the same mass, and a locking component (3) for locking the rotation of the horizontal rotating shaft (21) is arranged on the clamp (2).
2. A screen according to claim 1, characterized in that: The upper end surface of the blocking cross bar (11) used to block the prefabricated sand is arranged horizontally.
3. A screen according to claim 1, characterized in that: The blocking cross bar (11) is used to block the upper end surface of the prefabricated sand, and is arranged to be inclined in the direction of gravity as it moves away from the main body (1).
4. A screen according to claim 1, characterized in that: The number of the blocking cross bars (11) is multiple, and the multiple blocking cross bars (11) are distributed along the direction in which the prefabricated sand slides up and down the body (1).
5. A screen according to claim 1, characterized in that: The cross section of the blocking cross bar (11) along the downward sliding direction of the precast sand is triangular.
6. A screen according to claim 1, characterized in that: The locking assembly (3) comprises a sleeve (31) slidably arranged on the clamp (2), a flexible ring (32) being arranged on the inner wall of the sleeve (31), and an inner ring of the flexible ring (32) forming a clamping cavity (33) for clamping on the horizontal rotating shaft (21).
7. A screen according to claim 6, characterized in that: The sliding direction of the sleeve (31) is coaxial with the extension direction of the horizontal rotating shaft (21).
8. A screen according to claim 1, characterized in that: The clamp (2) is rotatably provided with a plurality of hook claws (4), the plurality of hook claws (4) being inserted into the sieve holes of the body (1) and being hooked on the body (1), and a clamping elastic member (41) being provided on the rotation axis of the hook claw (4), the clamping elastic member (41) being used to rotate the hook claw (4) in a clamping direction.
9. A screen according to claim 8, characterized in that: A balancing seat (42) is rotatably disposed on the clamp (2), and the hook claw (4) is rotatably disposed on the balancing seat (42).