Sand screening device for cement concrete prefabricated part production

Abstract

The utility model relates to a sand screening device for cement concrete prefabricated part production, which belongs to the technical field of constructional engineering, and comprises a barrel body, a screening mechanism is arranged in the barrel body, a collecting box is arranged below the screening mechanism, a discharging pipe is arranged on one side of the barrel body, a driving box is arranged on the other side of the barrel body, and the driving box is connected with the barrel body. A driving assembly is arranged in the driving box, and a vibrating mechanism is arranged below the driving box. On one hand, through the sieve plate with the protruding center and the rotating screening barrel, the dispersity of sand and stones can be improved, the stones are automatically screened out, stone impurities do not need to be manually cleaned, the working efficiency of the device is improved, on the other hand, the sieve plate can be effectively prevented from being blocked by the sand and stones through vibration screening, and the working efficiency of the device is improved. And the screening efficiency of the fine sand is further improved. In addition, rotary screening and vibrating screening are carried out in a staggered mode, so that the safety performance of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building engineering, specifically relates to a sand screening device for cement concrete prefabricated component production. BACKGROUND

[0002] In the construction engineering construction process, the staff needs to use a large amount of fine sand and cement to form concrete, but fine sand will be mixed with a large number of stones in the process of exploitation, if these stones are not screened, the quality of concrete products will be affected, and the building quality will be reduced.

[0003] At present, the stones and other impurities retained by the filter screen in the traditional sand screening device will be concentrated on the surface of the filter screen, thereby causing the blockage of the filter screen, reducing the screening efficiency of sand and stone, and in addition, cleaning the stones and other impurities needs to stop the operation of the sand screening device, so that the work efficiency of sand screening is also reduced. UTILITY MODEL CONTENT

[0004] To solve the technical problems in the above background art, the utility model provides a sand screening device for cement concrete prefabricated component production.

[0005] The purpose of the utility model can be realized by the following technical schemes:

[0006] A sand screening device for cement concrete prefabricated component production, comprising a barrel body, a screening mechanism is arranged in the barrel body, a collecting box is arranged below the screening mechanism, a discharge pipe is fixedly connected to one side of the barrel body, a drive box is fixedly installed on the other side of the barrel body, a drive assembly is arranged in the drive box, and a vibration mechanism is arranged below the drive box.

[0007] Further, the screening mechanism comprises a screening cylinder rotatably connected with the barrel body, a sieve plate is fixedly installed at the top end of the screening cylinder, the bottom end of the screening cylinder penetrates the bottom of the barrel body, a scraper is arranged on the side of the sieve plate close to the discharge pipe, the scraper is fixedly connected with the side wall of the barrel body, and the scraper is inclinedly arranged towards the discharge pipe.

[0008] Further, the center of the sieve plate is provided in a conical protruding shape; the sieve plate with the central protrusion can improve the dispersibility of sand and stone, thereby improving the screening efficiency.

[0009] Further, a plurality of uniformly distributed brushes are fixedly installed at the bottom of the scraper, and the brushes are matched with the surface of the sieve plate; the brushes can effectively prevent the blockage of the mesh holes of the sieve plate by stones, thereby improving the screening efficiency of stone waste.

[0010] Further, the driving assembly comprises a motor fixedly connected with the top end of the driving box, the output end of the motor penetrates the top end of the driving box and is fixedly installed with a first incomplete gear, and the output end of the motor also penetrates the bottom end of the driving box and is fixedly installed with a second incomplete gear; the driving assembly can screen out stone impurities while dredging the sand and stone on the screen plate, and the working efficiency of the device is improved.

[0011] Further, the inside side wall of the barrel body is provided with a first annular groove, an opening is arranged on the side close to the driving box of the first annular groove, a second annular groove is arranged below the first annular groove, a gear ring matched with the first annular groove is fixedly installed on the circumferential side of the screening drum, the gear ring is engaged with the first incomplete gear at the opening, and a ring strip slidably connected with the second annular groove is also fixedly installed on the circumferential side of the screening drum.

[0012] Further, the vibration mechanism comprises a connecting plate, the top end of the connecting plate is fixedly connected with the bottom end of the driving box, a knocking rod is arranged on the bottom end of the connecting plate, the knocking rod penetrates the connecting plate and is slidably connected with the connecting plate, a limiting block is fixedly installed on one end of the knocking rod, the other end of the knocking rod abuts against the side surface of the screening drum, a spring is sleeved on the knocking rod, the two ends of the spring are fixedly connected with the connecting plate and the limiting block respectively, a gear rack is fixedly installed on the side of the limiting block away from the spring, and the gear rack is engaged with the second incomplete gear; the vibration can effectively avoid the blockage of the sand and stone to the screen plate mesh, and the screening efficiency of fine sand is improved.

[0013] The device has the advantages that:

[0014] The screen plate with the center protrusion in the screening mechanism can disperse the sand and stone entering the barrel body on the surface of the screen plate, prevents the sand and stone from accumulating in the center of the screen plate, and thus speeds up the sand and stone screening effect; the rotation of the screen plate can further improve the dispersibility of the sand and stone and the screening efficiency, and the stones can be automatically screened out from the discharge pipe under the blocking action of the scraper, so that the automatic integration of sand screening and impurity removal of the device is realized, and the brush arranged at the bottom of the scraper can also clean the stones, effectively prevents the stones from blocking the screen plate mesh, and improves the screening efficiency of the stone waste;

[0015] The vibration mechanism can vibrate and dredge the sand and stone on the surface of the screen plate, prevents the fine sand from blocking the screen plate mesh, effectively improves the screening efficiency of the sand and stone, and through the cooperation of the first incomplete gear and the second incomplete gear, the knocking rod can be away from the screening drum when the screening drum rotates for screening, and the knocking rod can knock the screening drum to realize vibration screening when the screening drum is stationary, so that the safety performance of the device is improved.

[0016] The utility model on one hand can realize rotary screening, automatically screen out stones, improve the automatic integration of device, on the other hand can pass through vibrating screening, effectively prevent the blockage of screen plate, improve the screening efficiency of sandstone. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will introduce the drawing needed to be used in the embodiment description, obviously, the drawing in the following description only is some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0018] Figure 1 It is the structural schematic diagram of the sand screening device for cement concrete prefabricated component production of the utility model;

[0019] Figure 2 It is the internal structure schematic diagram of the screening mechanism of the utility model;

[0020] Figure 3 It is Figure 2 The partial close-up view of A in the middle;

[0021] Figure 4 It is the structural schematic diagram of the driving assembly of the utility model;

[0022] Figure 5 It is Figure 4 The partial close-up view of B in the middle.

[0023] In the drawings, the component list represented by each sign is as follows:

[0024] 1, barrel body;101, discharge pipe;102, first annular groove;2, screening mechanism;201, screening cylinder;202, ring strip;203, gear ring;204, screen plate;205, scraper;2051, brush;3, collection box;4, driving box;5, driving assembly;501, motor;502, first incomplete gear;503, second incomplete gear;6, vibrating mechanism;601, connecting plate;602, knock lever;603, limit block;604, spring;605, rack. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled person in the art without making creative labor belong to the scope of protection of the utility model.

[0026] Please refer toFigures 1-5 The utility model provides a sand screening device for cement concrete prefabricated component production, including the bucket body 1 of top open setting, the inside of bucket body 1 is provided with screening mechanism 2, the below of screening mechanism 2 is provided with collection box 3, one side of bucket body 1 is fixedly connected with the discharge pipe 101, the other side of bucket body 1 is fixedly installed with drive box 4, the inside of drive box 4 is provided with drive assembly 5, the below of drive box 4 is provided with vibration mechanism 6.

[0027] The inside lateral wall of the bucket body 1 is provided with a first annular groove 102, which is provided with an opening on one side close to the drive box 4. A second annular groove is formed below the first annular groove 102.

[0028] The screening mechanism 2 includes a screening cylinder 201, a ring strip 202 fixedly installed on the periphery of the screening cylinder 201 and matched with the second annular groove, the ring strip 202 being in sliding connection with the second annular groove. A tooth ring 203 is also fixedly sleeved on the periphery of the screening cylinder 201 and matched with the first annular groove. A screen plate 204 is fixedly installed on the top end of the screening cylinder 201 and provided with a central protrusion. The bottom end of the screening cylinder 201 penetrates through the bottom of the bucket body 1. A scraper 205 is provided on one side of the screen plate 204 close to the discharge pipe 101 and fixedly connected with the lateral wall of the bucket body 1. A plurality of uniformly distributed brushes 2051 are fixedly installed on the bottom of the scraper 205 and matched with the surface of the screen plate 204. The scraper 205 is obliquely arranged towards the discharge pipe 101.

[0029] The drive assembly 5 includes a motor 501 fixedly connected with the top end of the drive box 4. The output end of the motor 501 penetrates through the top end of the drive box 4 and is fixedly installed with a first incomplete gear 502. The first incomplete gear 502 is located in the first annular groove 102 on one side close to the bucket body 1 and engaged with the tooth ring 203. The output end of the motor 501 also penetrates through the bottom end of the drive box 4 and is fixedly installed with a second incomplete gear 503.

[0030] The vibration mechanism 6 includes a connecting plate 601 fixedly connected with the bottom end of the drive box 4. A knocking rod 602 is provided on the bottom end of the connecting plate 601 and in sliding connection with the connecting plate 601. A limiting block 603 is fixedly installed on one end of the knocking rod 602. The other end of the knocking rod 602 is in abutment with the lateral surface of the screening cylinder 201. A spring 604 is sleeved on the knocking rod 602 and located between the connecting plate 601 and the limiting block 603. The two ends of the spring 604 are fixedly connected with the connecting plate 601 and the limiting block 603, respectively. A rack 605 is fixedly installed on one side of the limiting block 603 away from the spring 604 and engaged with the second incomplete gear 503.

[0031] Working principle:

[0032] When working, the worker can pour the sand and stone to be screened from the top of the barrel body 1, and the sand and stone falls on the top end of the sieve plate 204 center and slides down along the slope, and the fine sand is screened into the collecting box 3 in the process of sliding, and the motor 501 is started, the output end of the motor 501 drives the first incomplete gear 502 to rotate, the first incomplete gear 502 drives the intermittent rotation of the gear ring 203, and then drives the screening cylinder 201 to rotate to screen the sand and stone, and at the same time, the stone is rotated with the sieve plate 204, and when it moves to the position of the scraper 205, the stone is blocked from the discharge pipe 101, and at the same time, the brush 2051 at the bottom of the scraper 205 cleans the screen hole on the surface of the sieve plate 204.

[0033] At the same time, the output end of the motor 501 also drives the second incomplete gear 503 to rotate, the second incomplete gear 503 drives the rack 605 to move outward, and then drives the knocking rod 602 to move away from the screening cylinder 201, when the first incomplete gear 502 rotates to not engage with the gear ring 203, the second incomplete gear 503 also rotates to the side not engaging with the rack 605, and the knocking rod 602 knocks the stationary screening cylinder 201 under the action of the spring 604, so as to vibrate and dredge the sieve plate 204, and improve the screening efficiency.

[0034] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above is only an example and description of the structure of the utility model, and those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, which shall belong to the protection scope of the utility model.

Claims

1. A sand screening device for cement concrete prefabricated component production, comprising a barrel body (1), a screening mechanism (2) is arranged in the barrel body (1), a collecting box (3) is arranged below the screening mechanism (2), a discharge pipe (101) is fixedly communicated with one side of the barrel body (1), a drive box (4) is fixedly installed on the other side of the barrel body (1), a drive assembly (5) is arranged in the drive box (4), and a vibrating mechanism (6) is arranged below the drive box (4). The screening mechanism (2) comprises a screening cylinder (201) rotatably connected with the barrel body (1), a screen plate (204) is fixedly installed at the top end of the screening cylinder (201), the bottom end of the screening cylinder (201) penetrates the bottom of the barrel body (1), a scraper (205) is arranged on the side of the screen plate (204) close to the discharge pipe (101), the scraper (205) is fixedly connected with the side wall of the barrel body (1), and the scraper (205) is obliquely arranged towards the discharge pipe (101).

2. The sand screening device for cement concrete precast member production according to claim 1, characterized in that: The center of the screen plate (204) is arranged in a conical protruding shape.

3. The sand screening device for cement concrete precast member production according to claim 1, characterized in that: A plurality of uniformly distributed brushes (2051) are fixedly installed at the bottom of the scraper (205) and matched with the surface of the screen plate (204).

4. The sand screening device for cement concrete precast member production according to claim 1, characterized in that: The drive assembly (5) comprises a motor (501), the motor (501) is fixedly connected with the top end of the drive box (4), the output end of the motor (501) penetrates the top end of the drive box (4) and is fixedly installed with a first incomplete gear (502), and the output end of the motor (501) also penetrates the bottom end of the drive box (4) and is fixedly installed with a second incomplete gear (503).

5. The sand screening device for cement concrete precast member production according to claim 4, characterized in that: A first annular groove (102) is arranged in the inner side wall of the barrel body (1), an opening is arranged on the side of the first annular groove (102) close to the drive box (4), a second annular groove is arranged below the first annular groove (102), a gear ring (203) matched with the first annular groove is fixedly installed on the circumferential side of the screening cylinder (201), the gear ring (203) is engaged with the first incomplete gear (502) at the opening, and a ring strip (202) slidably connected with the second annular groove is also fixedly installed on the circumferential side of the screening cylinder (201).

6. The sand screening device for cement concrete precast member production according to claim 4, characterized in that: The vibration mechanism (6) includes a connecting plate (601), the top end of the connecting plate (601) is fixedly connected with the bottom end of the driving box (4), the bottom end of the connecting plate (601) is provided with a knocking rod (602), the knocking rod (602) penetrates through the connecting plate (601) and is slidably connected with the connecting plate (601), one end of the knocking rod (602) is fixedly installed with a limiting block (603), the other end of the knocking rod (602) abuts against the side surface of the screening drum (201), a spring (604) is sleeved on the knocking rod (602), the two ends of the spring (604) are fixedly connected with the connecting plate (601) and the limiting block (603) respectively, the limiting block (603) is fixedly installed with a rack (605) on the side away from the spring (604), and the rack (605) is engaged with the second incomplete gear (503).

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