Anti-blocking and anti-splashing vibrating screen for experiment

Abstract

The utility model provides an anti-blocking and anti-splashing experimental vibrating screen which comprises a base, the middle of the top face of the base is concaved inwards to form a bearing groove, a material receiving box is arranged on the groove face of the bearing groove, vibrators are arranged on the groove face of the bearing groove and close to the four corners of the material receiving box respectively, and a material screening box is arranged above the bearing groove. The four corners of the bottom of the screening box are connected with the top ends of the four vibrators respectively, the screening box inclines in the length direction of the base, the middle of the screening box is concaved inwards to form a screening and filtering groove, a screening plate is arranged at the bottom of the screening and filtering groove, a collecting groove is formed in the portion, located on the outer side of the screening and filtering groove, of the screening box and surrounds the screening and filtering groove, and a top plate is arranged above the screening box. A discharging hopper is arranged on the top plate and located on the high-position side of the screening box. According to the vibrating screen, powder can be fully dispersed under the action of gravity by arranging the inclined screening box, the problem of material blockage can be relieved, the collecting groove is formed in the periphery of the screening and filtering groove, splashing particles can be collected, and the situation that the particles are splashed to other structures of the vibrating screen, and consequently the using effect is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental instruments, in particular to an anti-blocking and anti-splashing vibrating screen for experiments. Background Art

[0002] An experimental vibrating screen refers to an experimental instrument used in a laboratory to separate crushed experimental materials into thick and thin to achieve consistent particle sizes of the materials, including structures such as a screen mesh and a vibrator. Usually, when in use, the screen mesh holes are blocked and the materials splash. Regarding the blockage of the mesh holes, a vibrating screen with an anti-blocking structure is proposed (Patent No.: CN202420392700.9). It is mentioned in the article that a brush roller is rotatably connected to the inner wall of the mounting seat through a second bearing, and a dust collection mechanism is installed on the front of the top shell. The utility model, a vibrating screen with an anti-blocking structure, can brush off the granular materials stuck in the mesh holes of the screen mesh by driving the rotating brush roller to move left and right, avoiding the blockage of the screen mesh, and a dust collection mechanism is provided to avoid the harm caused by the dust during screening to the environment and the human body. Regarding the situation of material splashing, a vibrating screen for preventing material splashing is proposed (Patent No.: CN202121099259.8). It is mentioned in the article that a vibrating screen composed of a vibrating screen main body, a screening plate, a front vibrator, and a rear vibrator is set, and a protective plate is rotatably installed on the vibrating screen main body through a hinge to block the screened materials, so as to avoid the safety hazards caused by the splashing of the materials, and the protective plate is set as a high-density wire mesh plate, which is convenient for the staff to directly observe the internal situation.

[0003] The existing anti-blocking vibrating screen uses an additional brush roller mechanism that can roll to dredge the screen mesh, which not only complicates the vibrating screen mechanism, but also affects the screening efficiency due to the intermittent dredging of the screen mesh. Using an external dredging mechanism cannot solve the problem of mesh hole blockage starting from the vibrating screen mesh itself. The existing anti-splashing vibrating screen mainly blocks the materials through a protective plate. Due to the limited height of the protective plate, the materials may still splash under the vibrating state. Therefore, the role of the protective plate in blocking to prevent material splashing from damaging the vibrating screen has certain limitations.

[0004] Although the prior art can add anti-blocking and anti-splashing functions to the experimental vibrating screen, the two functions still need to be reflected on two vibrating screens and cannot function simultaneously on one vibrating screen. Therefore, there is still room for improvement in the existing experimental vibrating screen. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: aiming at the above technical problems existing in the existing experimental vibrating screen, to provide an anti-blocking and anti-splashing vibrating screen for experiments.

[0006] The present utility model adopts the following technical solutions to solve the above technical problems:

[0007] An anti-blocking and anti-splashing vibrating screen for experiments, comprising a cuboid-shaped base and four support legs arranged at the four corners of the bottom of the base. A bearing groove is concavely formed in the middle of the top surface of the base along the length direction. A material receiving box is arranged on the bearing groove surface. Four vibrators are respectively arranged at the four corners of the bearing groove surface near the material receiving box. Above the bearing groove, a screening box is arranged. The four corners of the bottom of the screening box are respectively connected to the tops of the four vibrators. The screening box is inclined along the length direction of the base. The middle of the screening box is concavely arranged as a screening groove. A screen plate is arranged at the bottom of the screening groove. A collection groove is opened outside the screening groove of the screening box. The collection groove is arranged around the screening groove. Above the screening box, a top plate is arranged. The bottom of the top plate is supported by a plurality of support shafts. The bottoms of the plurality of support shafts are fixedly arranged on the base. A feeding hopper is arranged on the top plate at the high-level side of the screening box.

[0008] Preferably, a plurality of screen holes penetrating the screen plate up and down are opened on the screen plate body. A boss is arranged on the screen plate surface at each of the plurality of screen holes. The boss is in the shape of a truncated cone ring tube. By arranging a truncated cone ring tube-shaped boss at the position corresponding to the screen hole on the screen plate, when vibrating the material, larger particles will not be vibrated into the screen hole but will be vibrated onto the boss. Since the boss is in the shape of a truncated cone (the upper aperture is smaller than the lower aperture) and there is a height difference, the particles blocked on the boss will be vibrated and dropped under the action of vibration, while the small particles will drop along the boss and the screen hole, thereby alleviating the problem of material blockage from the structure of the screen plate itself.

[0009] Preferably, the depth of the collection groove is less than the depth of the screening groove, and a film or thin plate with adhesiveness can be pasted on the bottom of the collection groove.

[0010] Preferably, a through groove with the same length as the length of the material receiving box is opened on one side of the base. Two rail bars arranged along the width direction of the base are arranged on the bearing groove surface. Two rail grooves are opened at the bottom of the material receiving box corresponding to the two rail bars. The rail bars are slidably connected to the rail grooves. The arrangement of the rail bars and the rail grooves enables the material receiving box to slide on the bearing groove, and the opening of the through groove enables the material receiving box to be taken out from the bearing groove, facilitating the collection of the powder collected in the material receiving box.

[0011] Preferably, a limit block is arranged at each end of the two rail bars away from the through groove on the bearing groove surface, and a telescopic clamping block is arranged at each end of the two rail bars close to the through groove on the bearing groove surface. Two grooves are concavely formed on the bearing groove corresponding to the two telescopic clamping blocks. The two telescopic clamping blocks are respectively arranged in the two grooves. The arrangement of the limit block and the telescopic clamping block can play a certain limiting role on the material receiving box, ensuring the stability of the material receiving box during the operation of the entire vibrating screen.

[0012] Preferably, two material dropping grooves with arc-shaped longitudinal sections are provided at the bottom of the material hopper. The provision of the arc-shaped material dropping grooves can extend the distance of material dropping, thereby slowing down the speed of material dropping, reducing the impact force on the surface of the screening tank during material dropping, and decreasing the probability of splashing.

[0013] Preferably, the length of the material dropping groove is the same as the width of the screening tank.

[0014] Preferably, an electromagnet is provided at the top end of each of the four vibrators, and a metal sleeve shaft is provided at the bottom of the screening box corresponding to the four electromagnets respectively, and the metal sleeve shaft is electromagnetically sleeved with the electromagnet. Connecting the electromagnet to an external circuit can generate a magnetic force to tightly connect with the metal sleeve shaft. When it is necessary to disassemble the screening box, disconnect the circuit of the electromagnet, and the electromagnet does not have magnetic force, then the screening box can be taken out, which is convenient for cleaning the screening box.

[0015] Preferably, the top plate is a top plate structure made of transparent glass material, and the top plate maintains the same inclination state as the screening box. The top plate made of glass material facilitates the experimenter to observe the situation inside the screening box.

[0016] Preferably, two handles are provided on the side of the material collection box close to the through groove. The provision of the handles can facilitate the pulling of the material collection box.

[0017] The present utility model adopts the above technical solutions, and compared with the prior art, has the following technical effects:

[0018] (1) By setting an inclined screening box, the powder can be fully dispersed under the action of gravity, which is beneficial to alleviating the problem of material blockage; a frustum-shaped ring tube convex platform is provided at the position corresponding to the sieve holes on the sieve plate. When vibrating and screening materials, larger particles will not be vibrated into the sieve holes but will be vibrated onto the convex platform. Since the convex platform is frustum-shaped (the upper aperture is smaller than the lower aperture) and there is a height difference, the particles blocked on the convex platform will be vibrated and dropped under the action of vibration, while the small particles will fall along the convex platform and sieve holes, thereby alleviating the problem of material blockage from the structure of the sieve plate itself.

[0019] (2) By providing a collection groove around the screening tank, the splashed particles can be collected, preventing the particles from splashing onto other structures of the vibrating screen and affecting the use effect; the provision of the arc-shaped material dropping groove can extend the distance of material dropping, thereby slowing down the speed of material dropping, reducing the impact force on the surface of the screening tank during material dropping, and decreasing the probability of splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall external structure of an anti-blocking and anti-splashing experimental vibrating screen of the present utility model;

[0021] Figure 2This is a schematic longitudinal sectional structure diagram of the upper part of the base in an anti-blocking and anti-splashing experimental vibrating screen of the present utility model;

[0022] Figure 3 This is a schematic longitudinal sectional structure diagram of the sieve plate in an anti-blocking and anti-splashing experimental vibrating screen of the present utility model;

[0023] Figure 4 This is a schematic longitudinal sectional structure diagram of the material dropping groove of the feeding hopper in an anti-blocking and anti-splashing experimental vibrating screen of the present utility model;

[0024] Figure 5 This is a schematic connection structure diagram of the material receiving box and the base in an anti-blocking and anti-splashing experimental vibrating screen of the present utility model;

[0025] Figure 6 This is a schematic longitudinal sectional structure diagram of the material receiving box and the base in an anti-blocking and anti-splashing experimental vibrating screen of the present utility model

[0026] Among them, each reference numeral is:

[0027] 1. Base; 2. Bearing groove; 201. Limit block; 202. Groove; 203. Telescopic clamping block; 204. Rail; 3. Support leg; 4. Vibrator; 5. Through groove; 6. Handle; 7. Material receiving box; 701. Rail groove; 8. Support shaft; 9. Feeding hopper; 901. Material dropping groove; 10. Top plate; 11. Sieve filter groove; 12. Collection groove; 13. Sieve material box; 14. Electromagnet; 15. Metal sleeve shaft; 16. Sieve plate; 1601. Sieve hole; 1602. Boss. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0029] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Embodiment 1:

[0031] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4, in the middle of the top surface of the base 1, a receiving groove 2 is recessed along the length direction. A material collecting box 7 is arranged on the groove surface of the receiving groove 2. At the four corners of the receiving groove 2 near the material collecting box 7, a vibrator 4 is provided at each corner. Above the receiving groove 2, a screening box 13 is provided. The four corners of the bottom of the screening box 13 are respectively connected to the tops of the four vibrators 4. The screening box 13 is inclined along the length direction of the base 1. The inclined screening box 13 enables the powder to be fully dispersed under the action of gravity, which is beneficial to alleviating the problem of material blockage. The middle of the screening box 13 is recessed to form a screening groove 11. A screening plate 16 is arranged at the bottom of the screening groove 11. A plurality of screening holes 1601 penetrating through the screening plate 16 up and down are opened on the plate body of the screening plate 16. On the plate surface of the screening plate 16, a boss 1602 is provided at each of the plurality of screening holes 1601. The boss 1602 is in the shape of a truncated cone ring tube. When screening materials by vibration, larger particles will not be vibrated into the screening holes but will be vibrated onto the boss 1602. Since the boss 1602 is in the shape of a truncated cone (the upper aperture is smaller than the lower aperture) and there is a height difference, the particles blocked on the truncated cone will be vibrated and fall off under the action of vibration, while the small particles will fall along the boss 1602 and the screening holes 1601, thereby alleviating the problem of material blockage from the structure of the screening plate 16 itself. Above the screening box 13, a top plate 10 is provided. The top plate 10 is a top plate structure made of transparent glass material. The top plate 10 maintains the same inclined state as the screening box 13. The bottom of the top plate 10 is supported by a plurality of support shafts 8. The bottoms of the plurality of support shafts 8 are fixedly arranged on the base 1. A hopper 9 is arranged on the top plate 10 at the high-position side of the screening box 13.

[0032] The top plate 10 is made of toughened glass or laminated glass, with a thickness of 8 - 12 mm, an impact resistance strength ≥ 10 MPa, and can withstand mechanical vibrations with a frequency of 50 - 100 Hz and an amplitude ≤ 2 mm generated by the vibrator 4. The transparent design facilitates observing the screening process, and the inclined structure is synchronized with the screening box 13, reducing the resonance stress.

[0033] Example 2:

[0034] Reference Figure 2 、 Figure 4, a collection groove 12 is provided outside the screening box 13 in the screening tank 11. The collection groove 12 is arranged around the screening tank 11. By setting the collection groove 12 around the screening tank 11, the splashed particles can be collected, preventing the particles from splashing onto other structures of the vibrating screen and affecting the use effect. The depth of the collection groove 12 is less than that of the screening tank 11. A film or thin plate with adhesiveness can be pasted on the bottom of the collection groove 12 to adhere to the splashed particles. At the bottom of the feeding hopper 9, there are two material dropping grooves 901 with an arc-shaped longitudinal section. The length of the material dropping groove 901 is the same as the width of the screening tank 11. The setting of the arc-shaped material dropping groove 901 can extend the distance of material dropping, thereby slowing down the speed of material dropping, reducing the impact force on the surface of the screening tank 11 when the material drops, and decreasing the probability of splashing.

[0035] Embodiment 3:

[0036] Reference Figure 1 、 Figure 5 、 Figure 6 , a through groove 5 with the same length as the length of the material receiving box 7 is provided on one side of the base 1. On the surface of the bearing groove 2, there are two rail bars 204 arranged along the width direction of the base 1. Corresponding to the two rail bars 204 at the bottom of the material receiving box 7, two rail grooves 701 are provided. The rail bars 204 are slidably connected with the rail grooves 701, enabling the material receiving box 7 to slide on the bearing groove 2. The opening of the through groove 5 allows the material receiving box 7 to be taken out from the bearing groove 2, facilitating the collection of the powder collected in the material receiving box 7; on the surface of the bearing groove 2, at each end of the two rail bars 204 away from the through groove 5, there is a limit block 201, and at each end of the two rail bars 204 close to the through groove 5 on the surface of the bearing groove 2, there is a telescopic clamping block 203. Two concave grooves 202 are formed in the bearing groove 2 corresponding to the two telescopic clamping blocks 203. The two telescopic clamping blocks 203 are respectively arranged in the two concave grooves 202. The limit block 201 and the telescopic clamping block 203 can both play a certain limiting role on the material receiving box 7, ensuring the stability of the material receiving box 7 during the operation of the entire vibrating screen; on the side of the material receiving box 7 close to the through groove 5, there are two handles 6.

[0037] Embodiment 4:

[0038] Reference Figure 2 , an electromagnet 14 is provided at the top of each of the four vibrators 4. Corresponding to the four electromagnets 14 at the bottom of the screening box 13, there is a metal sleeve shaft 15 respectively. The metal sleeve shaft 15 is electromagnetically sleeved with the electromagnet 14. By connecting the electromagnet 14 to an external circuit, a magnetic force can be generated to tightly connect with the metal sleeve shaft 15. When the screening box 13 needs to be disassembled, disconnect the circuit of the electromagnet 14, and the electromagnet 14 has no magnetic force, then the screening box 13 can be taken out, facilitating the cleaning of the screening box 13.

[0039] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be a direct connection. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change.

[0040] Secondly, in the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0041] Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vibration sieve for experimental use that prevents blockage and splashing, comprising a rectangular parallelepiped-shaped base (1) and four support feet (3) provided at the four corners of the bottom of the base (1), characterized in that: In the middle of the top surface of the base (1), a loading groove (2) is recessed along the length direction. A material collecting box (7) is arranged on the groove surface of the loading groove (2). At the four corners of the loading groove (2) near the material collecting box (7) on the groove surface, a vibrator (4) is provided respectively. Above the loading groove (2), a material screening box (13) is provided. The four corners of the bottom of the material screening box (13) are respectively connected to the tops of the four vibrators (4). The material screening box (13) is inclined along the length direction of the base (1). The middle of the material screening box (13) is recessed to form a screening groove (11). A sieve plate (16) is arranged at the bottom of the screening groove (11). A collecting groove (12) is formed on the outer side of the material screening box (13) at the screening groove (11). The collecting groove (12) is arranged around the screening groove (11). Above the material screening box (13), a top plate (10) is provided. The bottom of the top plate (10) is supported by a plurality of support shafts (8). The bottoms of the plurality of support shafts (8) are fixedly arranged on the base (1). A feeding hopper (9) is arranged on the top plate (10) at the high-position side of the material screening box (13). A plurality of sieve holes (1601) penetrating through the sieve plate (16) up and down are formed on the plate body of the sieve plate (16). A boss (1602) is arranged on the plate surface of the sieve plate (16) above the plurality of sieve holes (1601). The boss (1602) is in the shape of a truncated cone ring tube. A through groove (5) with the same length as the length of the material collecting box (7) is formed on one side of the base (1). Two rail strips (204) arranged along the width direction of the base (1) are arranged on the groove surface of the loading groove (2). Two rail grooves (701) are formed at the bottom of the material collecting box (7) corresponding to the two rail strips (204). The rail strips (204) are slidably connected with the rail grooves (701).

2. The anti-clogging and anti-splash vibrating sieve for experimental use according to claim 1, wherein: The depth of the collecting groove (12) is less than the depth of the screening groove (11). A film or thin plate with adhesiveness can be pasted on the bottom of the collecting groove (12).

3. The anti-clogging and anti-splash vibrating screen for experimental use according to claim 1, wherein: On the groove surface of the loading groove (2), a limit block (201) is arranged at each end of the two rail strips (204) away from the through groove (5). On the groove surface of the loading groove (2), a telescopic clamping block (203) is arranged at each end of the two rail strips (204) close to the through groove (5). Two grooves (202) are recessed on the loading groove (2) corresponding to the two telescopic clamping blocks (203). The two telescopic clamping blocks (203) are respectively arranged in the two grooves (202).

4. The anti-clogging and anti-splash vibrating sieve for experimental use according to claim 1, wherein: Two material falling grooves (901) with an arc-shaped longitudinal section are arranged at the bottom of the feeding hopper (9).

5. The anti-clogging and anti-splash vibrating sieve for experimental use according to claim 4, wherein: The length of the material falling groove (901) is the same as the width of the screening groove (11).

6. The anti-clogging and anti-splash vibrating sieve for experimental use according to claim 1, characterized in that: An electromagnet (14) is arranged at the top of each of the four vibrators (4). A metal sleeve shaft (15) is arranged at the bottom of the material screening box (13) corresponding to the four electromagnets (14). The metal sleeve shaft (15) is electromagnetically sleeved with the electromagnet (14).

7. The anti-clogging and anti-splash vibrating screen for experimental use according to claim 1, wherein: The top plate (10) is a top plate structure made of transparent glass material. The top plate (10) maintains the same inclination state as the material screening box (13).

8. The anti-clogging and anti-splash vibrating sieve for experimental use according to claim 1, wherein: Two handles (6) are provided on the side of the material receiving box (7) close to the through groove (5).

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