Concrete production raw material screening system

Abstract

The utility model relates to a concrete production raw material screening system in the technical field of concrete production raw material screening. The limiting device comprises a feeding box, a limiting box used for limiting the screening box is installed at the lower end of the limiting box, a funnel is installed at the lower end of the limiting box, a collecting box is installed at the lower end of the limiting box, a connecting pipe is installed at the upper end of the collecting box, and annular blocking cloth used for blocking dust is installed at the upper end of the connecting pipe. A second fixing ring is installed at the upper end of annular blocking cloth, a second annular magnet used for being matched with a funnel to block dust is installed in the second fixing ring, raw materials are put into a raw material box before screening, a second cover plate seals the upper end of a feeding pipe, and a first cover plate seals the upper end of an access hole. And a first fixing ring abuts against a second fixing ring, a second annular magnet and a first annular magnet attract each other, annular blocking cloth is used for blocking dust, and when raw materials are screened, dust is not prone to drifting around.

Description

Technical Field

[0001] This utility model relates to the field of screening technology for raw materials in concrete production, and in particular to a screening system for raw materials in concrete production. Background Technology

[0002] Concrete refers to a general term for engineering composite materials in which aggregates are bound together by cementing materials. The concrete commonly referred to is cement concrete, which is made by mixing cement as cementing material, sand and stone as aggregates, and water in a certain proportion.

[0003] For example, Chinese patent application CN202120001969.6 discloses a raw material screening system for concrete production, which includes a support frame, a feed hopper mounted on the support frame, a vibrator bolted to the side of the feed hopper near the support frame, and a screening assembly located at the discharge end of the feed hopper. A screening gap for screening raw materials is formed between the screening assembly and the feed hopper. This system has the following technical problems:

[0004] Because the feed hopper is open and the screening component is located at the discharge end of the feed hopper, the sealing of the screening component is poor. As a result, the existing technology generates a large amount of dust that is dispersed into the air when the raw materials are vibrated and screened, causing air pollution. Utility Model Content

[0005] To address the problem of a large amount of dust being dispersed into the air during vibrating screening as mentioned in the background art, this utility model provides the following technical solution:

[0006] A concrete production raw material screening system includes a screening box for easy screening of raw materials;

[0007] The screening box is equipped with a limiting device on its exterior for limiting the position of the screening box.

[0008] The limiting device includes a feeding box, and a limiting box for limiting the screening box is installed at the lower end of the feeding box. A funnel is installed at the lower end of the limiting box.

[0009] The limiting device includes a raw material box, a feeding pipe is installed at the upper end of the raw material box, a cover plate is installed at the upper end of the feeding pipe, and a screw conveyor for conveying raw materials is installed at the lower end of the raw material box.

[0010] A collection box is installed at the lower end of the limiting box, a connecting pipe is installed at the upper end of the collection box, an annular baffle for blocking ash is installed at the upper end of the connecting pipe, a second fixing ring is installed at the upper end of the annular baffle, and a second annular magnet for blocking ash in conjunction with the funnel is installed inside the second fixing ring.

[0011] The lower end of the limiting box is equipped with a support leg for supporting the limiting box, and the lower end of the funnel is equipped with a fixing ring. The inside of the fixing ring is a first annular magnet for attracting the second annular magnet.

[0012] Furthermore, an inspection port is installed at the upper end of the feeding box, and a cover plate is installed at the upper end of the inspection port.

[0013] Furthermore, a guide ring for limiting and guiding the screening box is installed at the upper end of the inner cavity of the limiting box, and a wave-shaped guide groove is formed on the outer wall of the guide ring.

[0014] Furthermore, the limiting box is equipped with a cam for controlling the vibration of the screening box, and a rotating rod for controlling the rotation of the cam is installed in the middle of the cam, with a motor installed at one end of the rotating rod.

[0015] Furthermore, a guide plate for guiding the raw materials is installed at the lower end of the raw material box, and a motor is installed at one end of the screw conveyor.

[0016] Furthermore, the screening box includes a box body, the upper inner wall of the box body is equipped with a plurality of sliding rods that slide within the grooves of the wave guide groove, the inner cavity of the box body is equipped with a conical protrusion for guiding the raw materials, and the bottom of the box body is equipped with a plurality of filter screens.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] Before screening, the raw materials are put into the inside of the raw material box, and the second cover plate seals the upper end of the feeding pipe, the first cover plate seals the upper end of the inspection port, the first fixing ring and the second fixing ring abut against each other, and the second ring magnet and the first ring magnet attract each other, so that the ring baffle cloth blocks the dust, so that the dust is not easy to spread around when screening the raw materials. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the limiting device of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0022] Figure 4 This is a schematic diagram of the structure of the guide ring of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the screening box of this utility model.

[0024] The following is a list of component names represented by the various reference numerals in the attached figures:

[0025] 100-Limiting device, 110-Feeding box, 111-Inspection port, 112-Cover plate one, 120-Limiting box, 121-Support leg, 122-Function funnel, 123-Fixing ring one, 124-First annular magnet, 130-Collection box, 131-Connecting pipe, 132-Annular baffle, 133-Fixing ring two, 134-Second annular magnet, 140-Guide ring, 141-Wave guide groove, 150-Cam, 151-Rotor, 152-Motor one, 160-Raw material box, 161-Feeding pipe, 162-Cover plate two, 163-Guide inclined plate, 170-Screw conveyor, 171-Motor two;

[0026] 200-Screening box, 210-Box body, 211-Slide rod, 212-Filter screen, 213-Conical protrusion. Detailed Implementation

[0027] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings.

[0028] Please see Figures 1-5 This utility model provides a concrete production raw material screening system, including a screening box 200 for easy screening of raw materials.

[0029] The screening box 200 is equipped with a limiting device 100 for limiting the screening box 200. The limiting device 100 includes a feeding box 110. An inspection port 111 is fixedly installed at the upper end of the feeding box 110. A cover plate 112 is installed at the upper end of the inspection port 111. Under normal circumstances, the cover plate 112 closes the inspection port 111. When a blockage occurs, the cover plate 112 can be opened for maintenance.

[0030] The lower end of the feeding box 110 is equipped with a limiting box 120 for limiting the screening box 200. The lower end of the limiting box 120 is fixedly equipped with a plurality of support legs 121 for supporting the limiting box 120. The lower middle part of the limiting box 120 is fixedly equipped with a funnel 122 for guiding the screened raw material. The lower end of the funnel 122 is fixedly equipped with a fixing ring 123. The inside of the fixing ring 123 is a first ring magnet 124 for attracting the second ring magnet 134.

[0031] A collection box 130 is installed at the lower end of the limiting box 120. A connecting pipe 131 is fixedly installed at the upper end of the collection box 130. An annular baffle 132 for dust blocking is fixedly installed at the upper end of the connecting pipe 131. A fixing ring 133 is fixedly installed at the upper end of the annular baffle 132. A second annular magnet 134 for dust blocking in conjunction with the funnel 122 is installed inside the fixing ring 133. Through the mutual attraction between the second annular magnet 134 and the first annular magnet 124, when the screened raw material falls into the collection box 130, the annular baffle 132 blocks the dust, and the dust is not easy to spread.

[0032] The upper end of the inner cavity of the limiting box 120 is fixedly installed with a guide ring 140 for limiting and guiding the screening box 200. The outer wall of the guide ring 140 is provided with a wave-shaped guide groove 141. Under the guidance of the wave-shaped guide groove 141, the screening box 200 moves up and down. The slide rod 211 slides synchronously in the groove cavity of the wave-shaped guide groove 141, so that the screening box 200 rotates synchronously when vibrating, which helps to screen the raw materials.

[0033] The limit box 120 is equipped with a cam 150 for controlling the vibration of the screening box 200. A rotating rod 151 for controlling the rotation of the cam 150 is fixedly installed in the middle of the cam 150. A motor 152 is installed at one end of the rotating rod 151.

[0034] The limiting device 100 includes a raw material box 160, which is installed on a platform at a height higher than the limiting box 120. A feeding pipe 161 is fixedly installed at the upper end of the raw material box 160, and a cover plate 162 is installed at the upper end of the feeding pipe 161 to facilitate the feeding of raw materials into the raw material box 160 before screening. A guide plate 163 is installed at the lower end of the raw material box 160 to guide the raw materials. A screw conveyor 170 is installed at the lower end of the raw material box 160 to transport the raw materials. A discharge port is opened on the right side of the screw conveyor 170 so that the raw materials fall into the screw conveyor 170 through the guide plate 163. A motor 171 is installed at one end of the screw conveyor 170, which controls the rotation of the screw conveyor 170 to transport the raw materials.

[0035] The screening box 200 includes a box body 210. Multiple sliding rods 211 that slide within the grooves of the wave guide groove 141 are fixedly installed on the upper inner wall of the box body 210. A conical protrusion 213 for guiding the raw material is fixedly installed in the middle of the inner cavity of the box body 210. Multiple filter screens 212 are installed at the bottom of the box body 210. The conical protrusion 213 causes the raw material to fall onto the upper end of the filter screen 212 for screening. The motor 152 is started, driving the rotating rod 151 to rotate, which in turn drives the cam 150 to rotate. The cam 150 and the bottom of the conical protrusion 213 abut against each other, thereby causing the box body 210 to vibrate up and down to screen the raw material.

[0036] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. A concrete production raw material screening system, comprising a screening box (200) for facilitating the screening of raw materials, characterized in that: The screening box (200) is equipped with a limiting device (100) for limiting the screening box (200). The limiting device (100) includes a feeding box (110), and a limiting box (120) for limiting the screening box (200) is installed at the lower end of the feeding box (110). A funnel (122) is installed at the lower end of the limiting box (120). The limiting device (100) includes a raw material box (160), a feeding pipe (161) is installed at the upper end of the raw material box (160), a cover plate (162) is installed at the upper end of the feeding pipe (161), and a screw conveyor (170) for conveying raw materials is installed at the lower end of the raw material box (160). The lower end of the limiting box (120) is equipped with a collection box (130), the upper end of the collection box (130) is equipped with a connecting pipe (131), the upper end of the connecting pipe (131) is equipped with an annular baffle (132) for dust blocking, the upper end of the annular baffle (132) is equipped with a fixing ring (133), and the interior of the fixing ring (133) is equipped with a second annular magnet (134) for dust blocking in conjunction with the funnel (122). The lower end of the limiting box (120) is equipped with a support leg (121) for supporting the limiting box (120), and the lower end of the funnel (122) is equipped with a fixing ring (123). The inside of the fixing ring (123) is a first ring magnet (124) for attracting the second ring magnet (134).

2. The concrete production raw material screening system according to claim 1, characterized in that: The upper end of the feeding box (110) is equipped with an inspection port (111), and the upper end of the inspection port (111) is equipped with a cover plate (112).

3. The concrete production raw material screening system according to claim 1, characterized in that: The upper end of the inner cavity of the limiting box (120) is equipped with a guide ring (140) for limiting and guiding the screening box (200), and the outer wall of the guide ring (140) is provided with a wave-shaped guide groove (141).

4. The concrete production raw material screening system according to claim 1, characterized in that: The limiting box (120) is equipped with a cam (150) for controlling the vibration of the screening box (200). A rotating rod (151) for controlling the rotation of the cam (150) is installed in the middle of the cam (150). A motor (152) is installed at one end of the rotating rod (151).

5. A concrete production raw material screening system according to claim 1, characterized in that: The lower end of the raw material box (160) is equipped with a guide plate (163) for guiding the raw material, and one end of the screw conveyor (170) is equipped with a motor (171).

6. A concrete production raw material screening system according to claim 3, characterized in that: The screening box (200) includes a box body (210), the upper inner wall of the box body (210) is equipped with a plurality of slide rods (211) that slide in the cavity of the wave guide groove (141), the middle of the inner cavity of the box body (210) is equipped with a conical protrusion (213) for guiding the raw materials, and the bottom of the box body (210) is equipped with a plurality of filter screens (212).

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