Screening device for concrete production

Abstract

The screening device for concrete production comprises a machine base and a screening cylinder rotationally arranged on the machine base, a dust cover covering the screening cylinder is further installed at the top of the machine base, and a plurality of spraying pipes surrounding the screening cylinder are fixedly installed on the inner side wall of the dust cover; a plurality of spraying openings facing the screening cylinder are formed in the spraying pipe; the length of the spraying pipes extends in the length direction of the center shaft of the screening barrel, and a water inlet pipe communicating with the spraying pipes is installed outside the dustproof cover. Side cover plates symmetrically arranged on the two sides of the dustproof cover are further detachably installed on the machine base and used for shielding openings in the two sides of the screening barrel. The dust suppression device has the advantages that dust can be effectively prevented from diffusing all around, and the dust suppression effect is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of concrete production equipment, and in particular to a screening device for concrete production. Background Art

[0002] At present, in the process of concrete production, it is necessary to select aggregates of different specifications according to different needs. By mixing aggregates of different specifications in a certain proportion, the quality of concrete can be improved. Factories usually use screening devices to screen aggregates of different sizes. One structure of the screening device includes a base, on which a screening cylinder driven by a motor is rotatably arranged. The screening cylinder has a large number of sieve holes. When working, the motor is started to drive the screening cylinder to rotate. At this time, the aggregate is poured into the screening cylinder. As the screening cylinder rotates, smaller aggregates will fall from the bottom of the screening cylinder through the sieve holes, and relatively larger aggregates will eventually fall from the discharge port of the screening cylinder, thereby completing the screening of the aggregates.

[0003] Regarding the above-mentioned screening device, a large amount of dust will be generated as the screening drum turns over during the screening of aggregates, and the top of some machine bases adopts an open structure. The dust raised at this time will cause great pollution to the surrounding environment. Utility Model Content

[0004] The present application provides a screening device for concrete production, which can greatly reduce the pollution caused to the surrounding environment during screening and has the effect of being more environmentally friendly during screening.

[0005] The present application provides a screening device for concrete production using the following technical solution:

[0006] A screening device for concrete production comprises a machine base and a screening drum rotatably arranged on the machine base, a dust cover covering the outside of the screening drum is also installed on the top of the machine base, a plurality of spray pipes surrounding the screening drum are fixedly installed on the inner side wall of the dust cover, and a plurality of spray ports facing the screening drum are arranged on the spray pipes; the length of the spray pipes extends along the length direction of the central axis of the screening drum, and a water inlet pipe connected with each spray pipe is installed on the outside of the dust cover; side cover plates symmetrically arranged on both sides of the dust cover are also detachably installed on the machine base, and the side cover plates are used to cover the openings on both sides of the screening drum.

[0007] By adopting the above technical solution: under the joint blocking of the dust cover and the side cover plate, the probability of the dust generated by the screening cylinder when screening aggregates spreading to the external environment can be greatly reduced; in addition, during the screening process, the screening cylinder supplies water to the water inlet pipe, and the spray water sprayed from the spray port through the spray pipe can spray the outer wall of the screening cylinder to reduce dust, thereby further suppressing the diffusion of dust and enhancing the dust reduction effect.

[0008] Preferably, a dust removal brush is provided on the inner side wall of the dust cover facing the screening cylinder, the dust removal brushes are symmetrically arranged on both sides of the screening cylinder, and the dust removal brushes are in contact with the outer side wall of the screening cylinder.

[0009] Preferably, a mounting groove is provided on the inner side wall of the dust cover, and an assembly plate is provided on the side of the dust removal brush facing away from the screening cylinder, and the assembly plate is plugged and limited on the inner side wall of the dust cover along the length direction of the mounting groove; the side cover plate is located on the sliding path of the assembly plate moving out of the mounting groove, and the assembly plate is in contact with the respective opposite side cover plates.

[0010] Preferably, a first latch seat is provided on the base, and a socket corresponding to the first latch seat is provided on the side cover, and the socket is used for allowing the respective opposite first latch seats to be inserted into the outside of the side cover; a latch member for locking the side cover on the base is plugged and fixed on the first latch seat.

[0011] Preferably, the dust cover is provided with a second latch seat opposite to the first latch seat, and the side wall of the second latch seat facing the plugging direction of the latch member is provided with an internal threaded hole, and the latch member is threadedly connected to the second latch seat through the internal threaded hole.

[0012] Preferably, a plurality of support rollers facing the outer wall of the screening drum are arranged on the inner wall of the base, and the support rollers are symmetrically arranged on both sides of the screening drum, and the outer walls of the support rollers are in contact with the outer walls of the screening drum; the rotating axis of the support rollers is parallel to the rotating axis of the screening drum.

[0013] Preferably, a transparent observation window is installed on the outer side wall of the side cover plate.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] With the dust cover and the side cover plate blocking together, the probability of dust generated by the screening drum when screening aggregates spreading to the external environment can be greatly reduced;

[0016] By supplying water to the water inlet pipe and conveying it through the spray pipe, the spray water sprayed from the spray port can spray the outer wall of the screening cylinder to reduce dust, thereby further suppressing the spread of dust and enhancing the dust reduction effect;

[0017] During the rotation of the screening drum, the outer surface of the screening drum can be cleaned by the dust removal brushes arranged on both sides of the screening drum. In addition, it can also effectively prevent the screen holes on the screening drum from being blocked by small-sized aggregates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0019] Figure 2 yes Figure 1 Schematic diagram of the local structure explosion;

[0020] Figure 3 yes Figure 2 Schematic diagram of the local structure from another perspective.

[0021] Explanation of the accompanying drawings: 1. Machine base; 2. Screening cylinder; 3. Dust cover; 30. Spray pipe; 31. Spray port; 32. Water inlet pipe; 4. Side cover; 40. Socket; 5. Dust brush; 50. Assembly plate; 6. Mounting groove; 7. First latch seat; 70. Latch member; 71. Second latch seat; 72. Internal threaded hole; 8. Support roller; 9. Transparent observation window. DETAILED DESCRIPTION

[0022] The present application is further described in detail below in conjunction with the accompanying drawings.

[0023] The embodiment of the present application discloses a screening device for concrete production.

[0024] Reference Figure 1 , Figure 2 The screening device for concrete production includes a base 1, on which a screening drum 2 driven by a motor is rotatably arranged, the screening drum 2 is arranged on the base 1 in an oblique downward manner, and a large number of sieve holes are penetrated on the screening drum 2 with equal density. A dust cover 3 covering the outside of the screening drum 2 is installed on the top of the base 1, and two side cover plates 4 symmetrically arranged on both sides of the dust cover 3 can be detachably installed on the base 1, and the side cover plates 4 are used to partially cover the openings on both sides of the screening drum 2.

[0025] like Figure 2 , Figure 3As shown, a plurality of spray pipes 30 are fixedly installed on the inner wall of the dust cover 3 and are spaced around the sieve cylinder 2. The length of the spray pipe 30 extends along the length direction of the central axis of the sieve cylinder 2. The spray pipe 30 is provided with a plurality of spray ports 31 facing the sieve cylinder 2. The spray ports 31 are arranged in sequence along the length direction of the spray pipe 30. A water inlet pipe 32 connected to each of the spray pipes 30 is also installed on the outside of the dust cover 3. During screening, water is supplied to the water inlet pipe 32, and is transported through each of the spray pipes 30. Finally, the spray water sprayed from each of the spray ports 31 can spray the outer wall of the sieve cylinder 2 to reduce dust, thereby further suppressing the spread of dust and enhancing the dust reduction effect.

[0026] like Figure 2 , Figure 3 As shown, two mounting grooves 6 are arranged on the inner side wall of the dust cover 3, and the mounting grooves 6 are symmetrically arranged on both sides of the screening drum 2, and the length of the mounting grooves 6 extends along the length direction of the central axis of the screening drum 2. An assembly plate 50 is installed on the dust cover 3 through the mounting grooves 6, and the length of the assembly plate 50 extends along the length direction of the mounting grooves 6. The assembly plate 50 is inserted and limited on the inner side wall of the dust cover 3 along the length direction of the mounting grooves 6, and a dust removal brush 5 extending to the outside of the mounting grooves 6 is fixedly installed on the side wall of the assembly plate 50 facing the screening drum 2, and the end of the dust removal brush 5 away from the assembly plate 50 is in contact with the outer side wall of the screening drum 2. The dust removal brushes 5 arranged on both sides of the screening drum 2 can clean the outer surface of the screening drum 2, and can also effectively prevent the sieve holes on the screening drum 2 from being blocked by small-sized aggregates.

[0027] like Figure 2 , Figure 3 As shown, a plurality of support rollers 8 facing the outer wall of the screening drum 2 are rotatably arranged on the inner wall of the base 1, and the support rollers 8 are symmetrically arranged on both sides of the screening drum 2, and the outer walls of the support rollers 8 are in contact with the outer walls of the screening drum 2. The rotation axis of the support rollers 8 is parallel to the rotation axis of the screening drum 2, and the support rollers 8 on the same side of the screening drum 2 are arranged in sequence along the length direction of the central axis of the screening drum 2. The support rollers 8 on both sides can support the screening drum 2, thereby further improving the stability of the screening drum 2 during operation, and when the screening drum 2 rotates, the support rollers 8 will rotate synchronously driven by the screening drum 2.

[0028] like Figure 2 , Figure 3As shown, the side cover plate 4 is located on the sliding path of the assembly plate 50 moving out of the mounting groove 6, and the assembly plate 50 contacts the respective side cover plates 4, and the assembly plate 50 is limited in the respective mounting groove 6 under the blocking of the side cover plate 4. A plurality of first latch seats 7 are fixedly mounted on the base 1, and the side cover plate 4 is provided with plug holes 40 corresponding to the first latch seats 7 one by one, and the plug holes 40 are used for the respective first latch seats 7 to be inserted from bottom to top into the outside of the side cover plate 4. The first latch seats 7 are plugged and fixed with latch parts 70 for locking the side cover plate 4 on the base 1, and the latch parts 70 are sequentially inserted into the adjacent plug holes 40 on the same side in the horizontal direction.

[0029] like Figure 2 , Figure 3 As shown, a second latch seat 71 opposite to the first latch seat 7 is fixedly mounted on the dust cover 3, and an internal threaded hole 72 is provided on the side wall of the second latch seat 71 facing the latch member 70 inserted into the first latch seat 7. The end of the latch member 70 is passed through the adjacent first latch seat 7 in turn, and finally threadedly connected with the second latch seat 71 through the internal threaded hole 72. At this time, under the action of the latch member 70, the dust cover 3 and the side cover plate 4 can be fixedly mounted on the machine base 1.

[0030] like Figure 2 As shown, a transparent observation window 9 is fixedly installed on the outer side wall of the side cover plate 4, through which the aggregate screening situation inside the screening cylinder 2 can be conveniently observed.

[0031] The implementation principle is: under the joint blocking of the dust cover 3 and the side cover plate 4, the probability of the dust generated by the screening drum 2 when screening the aggregate spreading to the external environment can be greatly reduced; in addition, during the screening process, the screening drum 2 supplies water to the water inlet pipe 32, and the spray water sprayed from the spray port 31 through the transportation of the spray pipe 30 can spray the outer wall of the screening drum 2 to reduce dust, thereby further suppressing the diffusion of dust and enhancing the dust reduction effect.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A screening device for concrete production, comprising a base (1) and a screening drum (2) rotatably arranged on the base (1), characterized in that: A dust cover (3) covering the outside of the screening cylinder (2) is also installed on the top of the machine base (1); a plurality of spray pipes (30) surrounding the screening cylinder (2) are fixedly installed on the inner side wall of the dust cover (3); the spray pipes (30) are provided with a plurality of spray ports (31) facing the screening cylinder (2); the length of the spray pipes (30) extends along the length direction of the central axis of the screening cylinder (2); a water inlet pipe (32) interconnected with each of the spray pipes (30) is installed on the outside of the dust cover (3); and side cover plates (4) symmetrically arranged on both sides of the dust cover (3) are also detachably installed on the machine base (1); the side cover plates (4) are used to cover the openings on both sides of the screening cylinder (2).

2. A screening device for concrete production according to claim 1, characterized in that: A dust removal brush (5) is provided on the inner side wall of the dust cover (3) facing the screening cylinder (2), the dust removal brush (5) is symmetrically arranged on both sides of the screening cylinder (2), and the dust removal brush (5) is in contact with the outer side wall of the screening cylinder (2).

3. A screening device for concrete production according to claim 2, characterized in that: The inner side wall of the dust cover (3) is provided with a mounting groove (6); an assembly plate (50) is provided on the side of the dust removal brush (5) facing away from the screening cylinder (2); the assembly plate (50) is inserted and limited on the inner side wall of the dust cover (3) along the length direction of the mounting groove (6); the side cover plate (4) is located on a sliding path for the assembly plate (50) to move out of the mounting groove (6), and the assembly plate (50) is in contact with the side cover plates (4) opposite to each other.

4. A screening device for concrete production according to claim 1, characterized in that: The base (1) is provided with a first latch seat (7), and the side cover (4) is provided with a plug hole (40) corresponding to the first latch seat (7), and the plug hole (40) is used for allowing the first latch seat (7) opposite to each other to be inserted into the outside of the side cover (4); the first latch seat (7) is plugged and fixed with a latch member (70) for locking the side cover (4) on the base (1).

5. A screening device for concrete production according to claim 4, characterized in that: The dust cover (3) is provided with a second latch seat (71) directly opposite to the first latch seat (7); an internal threaded hole (72) is provided on a side wall of the second latch seat (71) facing the plugging direction of the latch member (70); the latch member (70) is threadedly connected to the second latch seat (71) via the internal threaded hole (72).

6. A screening device for concrete production according to claim 1, characterized in that: A plurality of support rollers (8) facing the outer wall of the screening drum (2) are arranged on the inner wall of the machine base (1); the support rollers (8) are symmetrically arranged on both sides of the screening drum (2); and the outer walls of the support rollers (8) are in contact with the outer walls of the screening drum (2); and the rotation axes of the support rollers (8) and the rotation axes of the screening drum (2) are parallel to each other.

7. A screening device for concrete production according to claim 1, characterized in that: A transparent observation window (9) is installed on the outer side wall of the side cover plate (4).

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